Confidential Service manual TM-U200 Series (Type B) Issued date , , Issued by English 400852401 EPSON
EPSON SEIKO EPSON CORPORATION Printed in Japan
Confidential TM-U200 Series (Type B) Service Manual Revision Table Rev. Page Description Rev. A all pages Newly authorized Rev. B 1-1, 1-20, 2-13, 2-14, 2-15, 2-20, 2-23, 2-24, 2-25, A-6, A-7, A-8, A-9, A-13, A-14, A-15, A-16, A-17, A-22, A-23, Addendum 1 Revision due to main circuit board modification (See Addendum 1 for detail description). 5-45, 5-46, A-22, A-23, Addendum 2 Revision due to lower plate modification and deletion of ROM spacer (See Addendum 2 for detail description).
Confidential ii Revision Table
Confidential TM-U200 Series (Type B) Service Manual CONFIDENTIALITY AGREEMENT BY USING THIS DOCUMENT, YOU AGREE TO ABIDE BY THE TERMS OF THIS AGREEMENT. PLEASE RETURN THIS DOCUMENT IMMEDIATELY IF YOU DO NOT AGREE TO THESE TERMS. ❏ This document contains confidential, proprietary information of Seiko Epson Corporation or its affiliates. You must keep such information confidential.
Confidential Key to Symbols The symbols in this manual are identified by their level of importance, as defined below. Read the following carefully before handling the product. CAUTION: Observe cautions to avoid minor injury to your self, damage to your equipment, or loss of data. Note: Notes have important information and useful tips on the operation of your equipment. Safety Precautions on Maintenance/Repair/Inspection WARNING: Be sure to use the designated type of fuse for the circuit board.
Confidential TM-U200 Series (Type B) Service Manual CAUTION: Wear a grounded wrist band when handling the internal circuit boards to prevent damage from static electricity. When removing an internal circuit board, place it on an anti-static rubber sheet or similar surface to prevent damage from static electricity. Parts on the circuit board may become hot during operation. Therefore, wait approximately 10 minutes after turning the power off before touching them.
Confidential CONTENTS Chapter 1 Features and General Specifications Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Printing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Character Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Confidential TM-U200 Series (Type B) Service Manual Paper feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ribbon Feed Mechanism Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ribbon feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Detection Mechanism Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Confidential Chapter 5 Disassembly, Assembly, and Adjustment Small Part Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Removing the fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Removing the print head unit . . . . . . . . . . . . . . . . . . . . . .
Confidential TM-U200 Series (Type B) Service Manual Main Assembly 7 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37 Auto-cutter assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37 Main Assembly 8 (Case Unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Confidential Introduction TM-U200 Series (Type B) printers are one-station printers for ECR and POS use that can print the results of weighing or measuring.
Confidential TM-U200 Series (Type B) Service Manual Chapter 1 Features and General Specifications FEED button ERROR LED Power switch POWER LED PAPER OUT LED (PAPER OUT/PRESS FEED) PROM Power supply connector Drawer kick-out connector Frame ground screw DIP switch bank 1 Interface connector Frame ground screw DIP switch bank 2 (*) (*) There are three kinds of DIP switch bank 2. See Addendum 1 of this manual for more details. Figure 1-1 TM-U200 Series (Type B) appearance Rev.
Confidential Features Printing Specifications Printing method: Serial impact dot-matrix Head wire configuration: 9-pin serial type 0.353 mm (0.014") 0.29 mm (0.01") (wire diameter) 0.317 mm (0.012") Figure 1-2 Dot configuration Dot pitch: 0.353 mm (1/72") Dot wire diameter 0.29 mm (0.01") Printing direction: Bidirectional with logic seeking Printing width: 63.34 mm (2.49") Line feed: 4.233 mm (1/6"): default setting Programmable in units of 1/144 inch by using commands.
Confidential TM-U200 Series (Type B) Service Manual Character dimensions, characters per inch, characters per line Character Structure Horizontal x Vertical Character Structure Character Set Character Dimensions WxH Dot Spacing Between Characters Characters Per Line (cpl) Characters Per Inch (cpi) 7x9 ANK 1.2 x 3.1 mm (.047 x .122") 3 half dots 40 16 Graphics 1.7 x 3.1 mm (.070 x .122") 0 40 16 ANK 1.6 x 3.1 mm (.063 x .122") 3 half dots 33 13.3 Graphics 2.0 x 3.1 mm (.079 x .
Confidential Paper Paper types: Paper roll: Paper roll width: 76 ± 0.5 mm (2.99 ± .020") Paper roll maximum diameter: 83 mm (3.27") Paper roll core: Unless there is an optional near-end detector, you cannot use a paper roll with the core and paper glued together. Normal paper: Thickness: Weight: Pressure-sensitive paper Original sheet + up to 1 copy sheet Thickness: 1 sheet: 0.05 to 0.08 mm (.0020 to .0031") Total thickness: 0.2 mm (.
Confidential TM-U200 Series (Type B) Service Manual Auto Cutter Partial cut is executed by a command. (A partial cut leaves one point uncut.) Paper Roll Supply Device Supply device: Drop-in loading Receive Buffer ANK font model: Either 1000 bytes or 40 bytes, selectable by DIP switches. Multilingual fornt model: Either 512 bytes or 40 bytes, selectable by DIP switches.
Confidential External Dimensions and Weight Height: 150 mm (5.91") Width: 160 mm (6.30") Depth: 248 mm (9.76") Weight: Approximately 2.5 kg (5.5 lb) Color: EPSON standard gray Environmental Specifications Temperature: Operating: 0° to 50° C (32° to 122° F) At 34° C (93° F) or higher, there are humidity restrictions; see the figure below.
Confidential Impact resistance: TM-U200 Series (Type B) Service Manual When packed: Package: EPSON standard package Height: 60 cm (23.62") Directions: 1 corner, 3 edges, and 6 surfaces When unpacked: Height: 5 cm (1.97") Directions: Lift one edge and release it (for all 4 edges) Reliability Life Mechanism: 7,500,000 lines (See the TM-U200 Series (Type B) Specification for the print color switching number. Print head: 150 million characters (using an average of 2 dots/wire per character.
Confidential Hardware Configuration Paper end detector Print head unit Paper feed motor Home position sensor Carriage motor Paper roll near-end detector (optional) Interface circuit board Main circuit board Figure 1-6 TM-U200 Series (Type B) main unit configuration 1-8 Features and General Specifications Rev.
Confidential TM-U200 Series (Type B) Service Manual Main Unit Specifications Paper Feed Motor Type: 4-phase, 48-polarity, PM-type stepping motor Drive voltage: 24 VDC ± 10% Winding resistance: 58 Ω ± 2.9 Ω at 25° C (77° F), per phase Current consumption: Peak: 1.1 A in worst case Average: 200 mA at 24 VDC, 25° C (77° F), 600 pps 350 mA maximum Carriage Motor Type: 4-phase, 48-polarity, PM-type stepping motor Drive voltage: 24 VDC ± 10% Winding resistance: 39.5 Ω ± 1.
Confidential Paper End Detector Type: Microswitch Voltage: 5 VDC ± 5% Output level: High when paper end is detected Paper Roll Near-end Detector (Optional) Type: Microswitch Voltage: 5 VDC ± 5% Output level: Low when a paper near-end is detected Connectors Frame ground screw Interface connector Frame ground screw Drawer kick-out Power supply connector connector Figure 1-7 Connector panel (serial interface) Frame ground Interface Frame ground Drawer kick-out Power supply connector connector
Confidential TM-U200 Series (Type B) Service Manual Power Supply Connector This connector is used to connect the printer to an external power source. Pin assignments: See the table below. Power supply connector pin assignments Pin Number Signal Name 1 + power supply 2 GND 3 NC Shell Frame GND 2 3 1 NOTE:Be sure to ground the frame ground (FG) screw on the board at the bottom of the unit. Ground wire terminal hole diameter: 3.2 mm (.13"). Ground wire thickness: AWG 18 or equivalent.
Confidential Drawer kick-out drive signal Output signal: Voltage = Approximately 24 VDC Current = 1 A or less Output waveform: Outputs the waveforms in Figure 1-8 to pins 2 and 5 of the connector. t1 (ON time) and t2 (OFF time) are specified by ESC p. CAUTION: To avoid overcurrent, resistance of the drawer kick-out solenoid must be 24 Ω or more. t1 x 2 ms t2 x 2 ms Figure 1-9 Drawer kick-out drive signal output waveform NOTES: ❏ Two driver transistors cannot be energized simultaneously.
Confidential TM-U200 Series (Type B) Service Manual Interface RS-232 Serial Interface Data transmission: Serial (compatible with RS-232) Synchronization: Asynchronous Handshaking: DTR/DSR or XON/XOFF control Signal levels: MARK = -3 to -15 V: Logic 1/OFF SPACE = +3 to +15 V: Logic 0/ON Baud rates: 4800, 9600 bps Data word length: 7 or 8 bits Parity settings: None, even, odd Stop bits: 1 or more Connector: Female D-SUB 25-pin connector or equivalent NOTES: ❏ Handshaking, data word length,
Confidential Interface Connector Pin Assignments RS-232 interface connector pin assignments and functions Pin number Signal name I/O Function 1 FG — Frame ground 2 TXD O Transmit data 3 RXD I Receive data 4 RTS O Same as the DTR signal 6 DSR I This signal indicates whether the host computer can receive data. SPACE indicates the host computer can receive data, and MARK indicates the host computer cannot receive data.
Confidential TM-U200 Series (Type B) Service Manual Switching between on line and off line The printer does not have an on-line/off-line button. It goes off line under the following conditions: ❏ Between the time when power is turned on (including reset using the interface) and when the printer is ready to receive data. ❏ During the self-test. ❏ During paper feeding using the paper FEED button.
Confidential Serial interface connection example Host Printer TXD RXD DSR DTR CTS RTS RXD TXD DTR DSR FG FG SG SG NOTES: ❏ Set handshaking so that transmitted data can be received. ❏ Transmit data to the printer after turning on the power and initializing the printer. RS-485 Serial Interface (option) Refer to the Appendix for details.
Confidential TM-U200 Series (Type B) Service Manual Interface Connector Pin Assignments IEEE 1284 interface connector pin assignments and functions Pin number Source Compatibility Mode 1 Host Strobe Host Clk Host Clk 2 Host/Ptr Data0 (LSB) Data0 (LSB) Data0 (LSB) 3 Host/Ptr Data1 Data1 Data1 4 Host/Ptr Data2 Data2 Data2 5 Host/Ptr Data3 Data3 Data3 6 Host/Ptr Data4 Data4 Data4 7 Host/Ptr Data5 Data5 Data5 8 Host/Ptr Data6 Data6 Data6 9 Host/Ptr Data7 (MSB) Dat
Confidential Reception of status from the printer through the bidirectional parallel interface In bidirectional parallel interface operation, printer status transmission is available using the two-way communication facility of the IEEE 1284-compatible nibble/byte modes. In this case, unlike in RS-232 serial interface operation, real-time interruptions from the printer to the host are disabled, and so you must pay attention to the following.
Confidential TM-U200 Series (Type B) Service Manual Notes on setting DIP switch 1-8 to ON The printer mechanism stops but does not become busy when an error occurs, printing stops for a paper end, or paper is fed using the FEED button. When setting DIP switch 1-8 to ON to enable handshaking with the printer, be sure to check the printer status with GS a and ASB function. In this setting, the default value of n for GS a is 2.
Confidential DIP Switches See Addendum 1 of this manual for the description about the DIP switch settings. Panel LEDs Power (POWER) LED: Paper roll near-end (PAPER OUT) LED: Green On: 24 V power supply is stable. Off: 24 V power supply is not stable. Red On: Paper roll near-end is detected. (*1) Off: Adequate paper remains on the paper roll (normal condition). Blinking: Waiting for restart test print on paper roll or for return to on-line status after automatic paper feeding.
Confidential TM-U200 Series (Type B) Service Manual See Chapter 4 for instructions on running a self-test. Error Processing Printer Operation When an Error Occurs The printer executes the following operations upon detecting an error: Serial interface ❏ All mechanical operations stop. ❏ DTR signal is set to MARK (only when DTR/DSR is selected and DIP switch 1-8 is off). ❏ The ERROR LED blinks. ❏ XOFF is transmitted when XON/XOFF control is selected (only when DIP switch 1-8 is off).
Confidential Hexadecimal Dump This function prints data transmitted from the host computer in hexadecimal numbers and in their corresponding ASCII characters. Performing a Hexadecimal Dump 1. Turn the printer power off. 2. Set DIP switch 1-2 to on to select 40 bytes for the receive buffer capacity. 3. Turn the power on while pressing the FEED button. 4. Before finishing the initialization of the printer, release the FEED button, then press the FEED button again.
Confidential TM-U200 Series (Type B) Service Manual External Power Supply PS-170 Specifications 100 V, 120 V, or 230 V (specified at time of purchase) Input Conditions Input voltage (rating) 90 to 264 V (100 VAC-10% to 230 VAC + 15%) 108 VAC to 132 V (120 V type) Frequency (rating) 50 to 60 Hz ± 3 Hz Input current (rating) Less than 100 VA AC switch None Energizing LED None Output specifications Output voltage (rating) 24 VDC ± 5% Output voltage (rating) 2.
Confidential 1-24 Features and General Specifications Rev.
Confidential TM-U200 Series (Type B) Service Manual Chapter 2 Mechanism Configuration and Operating Principles Printer Mechanism Operating Principles The M-U200 printer mechanism mounted in the TM-U200 Series (Type B) is composed of six mechanisms: print, paper feed, ribbon feed, detector, auto-cutter, and ribbon switch. Figure 2-1 M-U200 Rev.
Confidential Print mechanism unit The print mechanism unit consists of the parts shown in the figure below. Carriage shaft Print head unit Print head ground plate assembly Belt tension pulley Paper feed frame assembly Carriage guide shaft Carriage sub assembly Belt Print head FPC Carriage motor assembly Figure 2-2 Print mechanism unit 2-2 Mechanism Configuration and Operating Principles Rev.
Confidential TM-U200 Series (Type B) Service Manual Print head unit movement When the carriage motor is driven and the carriage motor gear moves in the direction of arrow B (forward rotation), the rotational power is conveyed to the belt drive pulley, then the belt. Next, the carriage sub assembly, which is fixed to the belt, moves in the direction of arrow B. When the carriage motor gear rotates in the direction of arrow A (reverse rotation), the carriage sub assembly moves in the direction of arrow A.
Confidential Printing a character (9x9 font) A character is printed by energizing the print solenoids with respect to the carriage sub assembly portion. (The reference timing for the print solenoids is the carriage motor phase switching signals.) The print head unit moves 0.317 mm (0.012”) (in approximately 1.05 ms) each time the carriage motor rotates one step (7.5°). To print the character “2,” print solenoids 2 and 9 are energized first using the same timing as the carriage motor phase switching signal.
Confidential TM-U200 Series (Type B) Service Manual Paper Feed Mechanism Unit The paper feed mechanism unit consists of the parts shown in the figure below. Paper feeding is performed by driving the paper feed motor (stepping motor). Paper hold roller Paper hold spring Paper feed roller assembly Upper paper guide Paper feed motor Paper feed frame assembly Paper hold roller shaft Paper feed reduction gear Figure 2-6 Paper feed mechanism unit Rev.
Confidential Paper loading (semi-automatic loading) When the paper roll is manually inserted into the paper feed roller, the paper detection switch in the paper path detects the paper, and semi-automatic loading is executed. (Semi-automatic loading is the function that automatically feeds paper to the top of the paper feed frame assembly when a paper roll is inserted in the paper path after the detector detects no paper.
Confidential TM-U200 Series (Type B) Service Manual During printing, the paper feed motor is driven after each line is printed, causing the paper to be fed a specified amount. While the FEED button on the control panel is pressed, the paper feed motor is driven and the paper roll is fed.
Confidential Ribbon feeding When the carriage motor rotates forward and the carriage motor gear rotates in the direction of arrow A, the ribbon intermediate gear and ribbon drive gear rotate in the directions of arrows B and C, respectively. This causes the ribbon drive plate to move in the direction of arrow D, with the ribbon intermediate gear shaft in the center, until the ribbon drive gear engages the ribbon transmission gear.
Confidential TM-U200 Series (Type B) Service Manual Detection Mechanism Unit The detection mechanism unit consists of the home position detection, paper detection, and near-end detection (optional) mechanisms. Paper detector Home position sensor Figure 2-11 Detection mechanism unit Home position detection mechanism The home position detection mechanism consists of the detection protrusion at the left side of the carriage sub assembly and the sensor sub assembly at the left side of the base frame.
Confidential Paper detection mechanism The paper detection mechanism is located in the paper path. The mechanism provides paper end detection for the paper roll and semi-automatic loading by detecting presence or absence of the paper roll when it is inserted. Since the paper detector switch sub assembly is a micro switch, it is always ON when the paper roll is loaded.
Confidential TM-U200 Series (Type B) Service Manual movable blade drive pin in direction E to make the blade execute a cut. If the motor continues rotating, the wormwheel makes one rotation and it makes the movable blade return to the standby position and the cutting is finished.
Confidential ribbon release spring. When the carriage sub assembly moves in the E direction, the ribbon frame assembly and ribbon release lever return to their original positions because of the spring power of the ribbon frame spring.
Confidential TM-U200 Series (Type B) Service Manual Circuit board block diagram The main circuit board unit contains the following electrical circuits: ❏ Power supply circuit ❏ Reset circuit ❏ CPU [internal RAM: 16K bits (2K x 8 bits)] ❏ Memory [EPROM 512K bits (64K x 8 bits) or flash memory (4M bits/8M bits) ] ❏ Operation panel control circuit ❏ Drawer kick-out driver circuit ❏ Print head driver circuit ❏ Paper feed motor driver circuit ❏ DIP switch read circuit ❏ Various detector circuits ❏ Carriage mot
Confidential The figure below illustrates the circuit block diagram for the printer. ROM or flash memory Figure 2-17 Circuit board block diagram 2-14 Mechanism Configuration and Operating Principles Rev.
Confidential TM-U200 Series (Type B) Service Manual Memory Map The following parts are mapped on the printer memory map: ❏ CPU ❏ EPROM or flash memory(program) External program memory 0000H External data memory 0000H Program, character generator area FFFFH (For multi-lingual) Intemal memory 0000H Can not to be used.
Confidential Principles of Operation Power Supply Circuitry The power supply circuit is compact, uses a switching method, and is attached to the main circuit board. The following sections describe printer power supply circuitry. The following table shows power supply voltages and their usages.
Confidential TM-U200 Series (Type B) Service Manual Control Circuitry Reset circuit The reset circuit is used to prevent the CPU from operating erratically and the print head from printing unexpectedly during the period of unstable voltage immediately after power is turned on. To accomplish this, the OUT terminal output (pin 5) of the reset IC (U9) is supplied to the CPU (U5) as the RESET input signal (pin 21). The reset IC (U9) monitors the +5 V voltage. When the voltage is 4.
Confidential CPU The printer uses an external 8-bit and internal 16-bit CPU, with an external clock of 14.7 MHz. The CPU (U5) controls the internal processing of the printer according to the printer control program written in EPROM (U8). CPU pin functions Pin No. CPU Function Signal Name I/O Level Description 1 P57 ELED/DSW9 I/O TTL ERROR LED. LOW: on. DIP SW 2-1 is read when P100, P101 are LOW. 2 NMI NMI I TTL Not used (connected to +5 V directly).
Confidential TM-U200 Series (Type B) Service Manual CPU pin functions Rev. B Pin No. CPU Function Signal Name I/O Level Description 25 X2 X2 O --- Connected to ceramic. f=14.74 MHz ± 0.5%. 26 EA EA I TTL External memory access. LOW: external ROM HIGH: internal ROM (CPU mask). 27 P75 P75 (A16) O TTL External memory address A16 (software). 28 P76 P76 (A17) O TTL External memory address A17 (software). 29 P77 P77 (A18) O TTL External memory address A18 (software).
Confidential CPU pin functions Pin No. CPU Function Signal Name I/O Level Description 56 P90 PF A/DSW5 I/O TTL 57 P91 PF B/DSW6 58 P92 PF C/DSW7 Paper feed motor driver control 2-2 phase excitation. All terminals on (LOW): hold. DIP SW 1-5 to 1-8 read when P100, P101 are LOW. 59 P93 PF D/DSW8 60 RD RD O TTL External memory data read signal. 61 WR WR O TTL External memory data write signal. 62 P32 DKD1 O TTL Drawer kick-out driver signal 1. LOW: active.
Confidential TM-U200 Series (Type B) Service Manual RAM (CPU internal 2K bit) RAM is used as temporary storage for the following: ❏ Data received from the interface (receive buffer) ❏ Pattern data to be printed by the print head (printer buffer) ❏ Data used by the CPU (U5) during processing (flags, pointers, etc.). Operation panel The operation panel is located on the main circuit board and has 3 LEDs (POWER, ERROR, and PAPER OUT) and 1 switch (FEED).
Confidential A near-end detector is an option that detects the remaining amount of a paper roll. The input signal to the CPU (U5) becomes LOW when a paper near-end is detected. +5V +5V Mechanism 1 +5R Printer mechanism CN8 R40 R36 U5 RE P64/AN4 11 P62/AN2 2 R37 R38 P65/AN5 1 REC 12 HP DET 9 HPC 3 R39 R53 4 1 2 3 4 +5V H.P GND R.E NE R16 C44 C22 C23 1 2 C46 GND Mechanism 2 CN11 NEC 1 2 1 2 N.
Confidential TM-U200 Series (Type B) Service Manual The +24 V drawer power supply is supplied via the regulator IC (U2), which cuts off the supply in case of excessive current.
Confidential CPU (U5) pins 52 to 55, pins 56 to 59, and pins 1 and 80 are also used for the carriage motor drive circuit, paper feed motor drive circuit, and operation panel control circuit. The pins are used to read DIP switches temporarily immediately after the printer initialization (or the power is turned on).
Confidential TM-U200 Series (Type B) Service Manual When the DIP switch set 2 is AD-type or CD-type There are eight switches in DIP switch set 1 and four switches in DIP switch set 2 that are statusreadable switches. Each signal is input to the CPU. The signal is read as LOW when the switch is on, and HIGH when the switch is off.
Confidential Printer Mechanism Driver Circuits Print head driver circuit The head driver signal is output from CPU (U5) pins 64 to 72. Receiving this drive signal, transistor array QM1 and QM2 and transistor array QM3 turn On, Off, and drive the head. Power supply time to the head is adjusted by the supplied power voltage. The CPU (U5) changes the power voltage between analog and digital at AN0 (pin 7) and decides and controls the head power supply time according to the internal time table.
Confidential TM-U200 Series (Type B) Service Manual Paper feed motor driver circuit The paper feed motor (stepping motor) possesses an accurate angle of rotation and permits speed control. It is driven with 2-2 phase excitation. By turning P53 of the CPU to LOW, +24 V (labeled +24C signal in the figure below) is applied to the COM terminal of its coil, and it is made to run by changing P90, P91, P92 and P93 to HIGH and LOW.
Confidential Auto-cutter driver circuit Rotating the DC motor counterclockwise or clockwise causes the auto-cutter to execute a full cut or a partial cut (one point left uncut). The driver IC (U6) has a full-bridge configuration and controls motor rotation, clockwise and counterclockwise. The position of the auto-cutter blade is detected by the signal connected to P67 of the CPU.
Confidential Rev.
Confidential 2-30 Mechanism Configuration and Operating Principles Rev.
Confidential TM-U200 Series (Type B) Service Manual Chapter 3 Handling and Maintenance Handling Precautions Storage Precautions ❏ Avoid storing the printer in a dusty, humid, or extremely cold area. Also avoid areas that are exposed to direct sunlight for long periods of time. ❏ For long-term storage, place the printer in a polyethylene bag with anti-rust paper (VCI paper) and keep it in a dry place. Use Precautions ❏ Always install a ribbon cassette and load paper before printing.
Confidential Ribbon Cassette Handling Precautions ❏ Use only the ribbon cassette specified in Chapter 1 of this manual. If another ribbon cassette is used, any of the following may occur: • Print quality deterioration • Printer life may be shortened • Ink may leak • The ribbon may catch on the print head. ❏ Do not re-ink a ribbon. If a ribbon is re-inked: • Print quality could deteriorate due to a malfunction of the print wires • Ink may leak.
Confidential TM-U200 Series (Type B) Service Manual 4. Press the FEED button to remove the cut paper. 5. Remove the used paper roll. 6. Using scissors, cut the leading edge of the paper roll perpendicular to the paper feed direction, as shown below. 7. Insert the paper roll. Note: Be sure to note the correct direction that the paper comes off the roll, as shown below. Rev.
Confidential 8. Open the auto-cutter by pulling the tab up and toward you. 9. Hold both edges of the paper and insert it straight into the paper slot. The printer feeds the paper automatically. 10. If the paper is not coming out of the manual cutter, press the paper FEED button until the paper comes out. 3-4 Handling and Maintenance Rev.
Confidential TM-U200 Series (Type B) Service Manual 11. Cut the paper on the manual cutter. 12. Close the auto cutter by using the tab. 13. Close the printer cover. 14. When the PAPER OUT light blinks, press the paper FEED button to set the printer on line. Note: The printer is off line until the PAPER OUT light is off. Replacing the Ribbon Cassette CAUTION: Make sure the printer is not receiving data when you replace a ribbon cassette; otherwise, data may be lost. 1. Open the printer cover. 2.
Confidential 4. Turn the ribbon cassette’s knob in the direction of the arrow to take up any slack in the ribbon. CAUTION: Never turn the ribbon cassette’s feed knob in the opposite direction of the arrow marked on the cassette; otherwise the ribbon cassette may be damaged. 5. Insert the ribbon in the position shown in the illustration below and push the ribbon cassette until it clicks. Note: Make sure that the ribbon is installed between the print head and the platen without wrinkles or creases.
Confidential TM-U200 Series (Type B) Service Manual 6. Turn the ribbon cassette’s knob 5 or 6 times in the direction of the arrow again to take up any slack in the ribbon. Removing Jammed Paper Follow these steps to clear a paper jam: CAUTION: The print head becomes very hot during printing. Allow it to cool before you reach into the printer. 1. Turn the printer off and open the printer cover. Rev.
Confidential 2. Pull the paper and cut it at the position shown by the dotted line in the illustration below. Cut here 3. Remove the paper roll. 4. Open the auto cutter by pulling the tab up and toward you. 5. Remove the jammed paper by pulling it in the direction of paper feeding. 3-8 Handling and Maintenance Rev.
Confidential TM-U200 Series (Type B) Service Manual Note: Do not pull the jammed paper in the opposite direction of paper feeding. 6. If paper still remains in the printer, follow the steps below. 7. Remove the ribbon cassette. 8. Loosen the screw securing the print head cover. Turn the screw only until you can tilt it as shown in the illustrious. Rev.
Confidential Note: Do not remove the screw from the print head cover. 9. Remove the print head cover. 10. Remove all the jammed paper. Note: Do not pull the jammed paper in the opposite direction of paper feeding. 11. Replace the print head cover and secure it with the screw. 12. Replace the ribbon cassette and close the auto cutter. 3-10 Handling and Maintenance Rev.
Confidential TM-U200 Series (Type B) Service Manual 13. If the auto cutter blade is not in its normal position (if you can see the blade in the auto cutter slit, the blade is not in the normal position), insert a screwdriver into the right side of the auto cutter and turn the gear inside to move the blade to the normal position. 14. Replace the paper roll and close the printer cover. Rev.
Confidential Using the Power Switch Cover You can use the provided power switch cover to protect the power switch from accidental or improper operation. Attach the cover as shown in the illustration below. You can turn the power on or off with the switch cover attached by inserting a pointed object (like a ball point pen) through either of the two small holes on the switch cover.
Confidential TM-U200 Series (Type B) Service Manual Inspection and Maintenance Proper performance of the inspection and maintenance procedures described below allows this unit to perform for the years of trouble-free operation for which it is designed.
Confidential Cleaning 1. Wipe off stains with a clean, dry cloth. If the stains cannot be wiped off, use a neutral detergent. CAUTION: Never use benzene, alcohol, thinner, trichloroethylene, or any of the ketone family of solvents because they may deform or damage plastic and rubber components. 2. Thoroughly clean all parts of the printer with a vacuum cleaner. Note: Check the amount of lubrication in each cleaned area and lubricate as needed. See “Lubricants” below.
Confidential TM-U200 Series (Type B) Service Manual Lubrication Points The following table describes the lubrication points, type, and class. The numbers in the following table correspond to the numbers in the lubrication and adhesive points diagrams in the Appendix on pages A-7 and A-8. Lubrication points No.
Confidential Lubricants and adhesives list Lubricants and adhesives Type/name Quantity Grease/G-31 40 gr (1.4 oz) Oil/O-3 40 gr (1.4 oz) 3-16 Handling and Maintenance Rev.
Confidential TM-U200 Series (Type B) Service Manual Chapter 4 Troubleshooting Use the following to troubleshoot and repair the printer: Self-test This procedure tests control circuitry (other than serial communication and parallel communication send / receive control) and the printer mechanism. Troubleshooting flowchart When the source of the problem is not clear, use the flowchart to find and replace a defective component.
Confidential Troubleshooting Flowchart If the source of a problem is not clear, use the flowchart below to find and replace the defective component. Normally, perform servicing by component replacement. Repairs of the PCBs and other components should be performed only by technicians. Start Power on Is POWER LED lit? No 1 Yes Is ERROR LED flashing? No Yes Take steps described in “Error types and countermeasures.
Confidential TM-U200 Series (Type B) Service Manual 1 POWER LED does not light 1 Is power supply cable connected properly? No Connect power supply cable properly. Yes No OK? Yes End Does external power supply have proper output voltage rating? (approximately +40 V in no-load condition) Yes No Replace external power supply. No OK? Yes End Has fuse F1 on main PCB blown? No Yes Make sure main PCB does not have any damage such as burns.
Confidential 2 PAPER LED is lit. 2 Turn the power on again. OK? Yes No END (*) Is the paper roll near end sensor’s continuity normal?* No Replace the nearend sensor. Yes No OK? Yes END Replace printer mechanism assembly. Yes OK? No END Replace main PCB. END (*) The near-end sensor is optional. 4-4 Troubleshooting Rev.
Confidential TM-U200 Series (Type B) Service Manual 3 Semi-automatic loading is not executed. 3 Yes Is paper jammed in the paper inlet path? Remove the paper. No No OK? Yes END Is connector CN6 attached firmly? No Attach connector firmly. Yes No OK? Yes END Replace printer mechanism assembly. OK? Yes No END Replace main PCB. END Rev.
Confidential 4 Self-test is not normal. 4 Does the printer not perform at all? Yes No Replace printer mechanism assembly. Is the output voltage of the regulator circuit on the main board within the specified range? (*) Yes OK? No END No Replace the main PCB. Replace the mechanism. No OK? Yes Replace main PCB. END END END (*) Confirm the voltage at each terminal in the table below: Checkpoint Specified value Pin 3 of U2, U3, U4 Approx. 24 V R54 Approx. 5 V 4-6 Troubleshooting Rev.
Confidential TM-U200 Series (Type B) Service Manual 5 The auto-cutter does not perform correctly. Disassembly of the auto-cutter unit is prohibited. If you disassemble it, performance cannot be guaranteed. 5 Is there a paper jam in the auto-cutter? Yes Remove jammed paper. Yes Turn on the power again. No OK? Yes End Replace the auto-cutter unit. OK? Yes No End Replace the main circuit board. End Rev.
Confidential 6 Data from host is not printed normally. 6 Set DIP switch 1–1 to OFF. Send data from host to printer. (*) Is “?” printed? Yes Are serial interface parameters set to identical values at host and printer? No No Make settings identical. Yes Does interface cable match specifications? No No OK? Yes Replace with a proper cable. End Yes No OK? Yes End Is interface PCB connected to the main PCB firmly? (*) Dotted line indicates the process of checking problems for the serial interface.
Confidential TM-U200 Series (Type B) Service Manual Troubleshooting Tables The tables contain the following columns: ❏ Problem This is a symptom that can be verified. ❏ Probable cause This is a listing of one or several possible causes that should be examined. ❏ Level Level A The problem can be corrected by persons familiar with the printer who have general knowledge, but special technical skills are not required.
Confidential Table 4-1 Troubleshooting table for printer operation failure (Continued) Problem Probable cause Data from the host is printed incorrectly. An incorrect interface cable may be used. Checkpoint Action A Check if the interface cable matches the printer specifications. Use the correct interface cable. For the serial interface models, the printer DIP switch settings do not match the host settings. A Check if the printer DIP switch settings match the host settings.
Confidential TM-U200 Series (Type B) Service Manual Table 4-1 Troubleshooting table for printer operation failure (Continued) Problem Probable cause Semi-automatic loading is not executed. (Paper is not fed.) The paper supply operation may be incorrect. Level Checkpoint Action A Check if the paper roll meets printer specifications. Use the correct paper roll. (See “Paper Specifications” in Chapter 1.) The paper path may be incorrect.
Confidential Table 4-2 Troubleshooting table for bad printing (Continued) Problem Probable cause Dots are missing occasionally. The head FPC may be bad. The character width is incorrect. Paper is not fed. (Printing is performed on one line.) Paper is not fed. (Printing is performed on one line.) (cont.) 4-12 Troubleshooting Level Checkpoint Action B Check the continuity of the head FPC. Replace the head FPC. The print head unit may be bad.
Confidential TM-U200 Series (Type B) Service Manual Table 4-2 Troubleshooting table for bad printing (Continued) Problem Probable cause The paper feed pitch is not uniform. Operation of the paper supply may be incorrect. The printer prints, but the ribbon is not fed. Rev. B Level Checkpoint Action A Check if the specified paper roll is used. Use the correct paper roll. (See “Paper Specifications” in Chapter 1.) The paper path may be incorrect. A Check if the paper supply path is blocked.
Confidential Table 4-2 Troubleshooting table for bad printing (Continued) Problem Probable cause The print color is mixed. (Half of the character is black and the other half is red.) The ribbon cassette is floating. Color does not change. (Black to red or red to black.) 4-14 Troubleshooting Level Checkpoint Action A Verify that the ribbon cassette is mounted correctly. Mount the ribbon cassette in the correct position. (See “Replacing the Ribbon Cassette” in Chapter 3.
Confidential TM-U200 Series (Type B) Service Manual Error Types and Countermeasures Follow the flowcharts on the next page based on the ERROR LED blinking patterns in the table below and repair the printer. The printer does the following when an error occurs: ❏ All operations stop ❏ The printer goes off-line (when DIP SW 1-8 is off). ❏ The ERROR LED blinks.
Confidential Action 1 Action 1 Wait for the print head temperature to drop. Has the printer recovered from the error? Yes END No Replace main PCB. OK? Yes No END Replace printer mechanism assembly. END 4-16 Troubleshooting Rev.
Confidential TM-U200 Series (Type B) Service Manual Action 2 Action 2 Are there any chips of paper in the home position sensor? Yes Remove paper. No OK? Yes END Is connector CN5 inserted firmly? No Insert the connector firmly. Yes No OK? Yes Replace printer mechanism assembly. OK? No END Yes END Replace main PCB. END Rev.
Confidential Action 3 Action 3 Turn the printer power off. Does external power supply have proper output voltage rating? (approx. 40 V in no-load condition) No Replace external power supply. Yes No OK? Yes END Replace main PCB. OK? Yes No END Replace printer mechanism assembly. END 4-18 Troubleshooting Rev.
Confidential TM-U200 Series (Type B) Service Manual Action 4 Action 4 Replace main PCB. OK? Yes No END Replace printer mechanism assembly. END Rev.
Confidential 4-20 Troubleshooting Rev.
Confidential TM-U200 Series (Type B) Service Manual Chapter 5 Disassembly, Assembly, and Adjustment Small Part Specifications This section uses abbreviations for small parts, such as screws and washers. The following is a list of these abbreviations and illustrations of the screw types.
Confidential Disassembly Removing the fuse 1. Turn off the printer. 2. Disconnect the external power supply. 3. Remove the main cover assembly from the printer. 4. Remove the lower plate from the printer. CPS-tite (M3x6) [0.59 to 0.78 N • m (6 to 8 kgf • cm)] Fuse 5. Use tweezers to remove the blown fuse. 6. Replace the fuse with a 125 V, 2.0 AT Littelfuse 154002T. 5-2 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual Removing the print head unit 1. Remove 4 screws, and remove the upper case. 2. Remove the right side screw securing the auto-cutter fixing plate. Upper case screw Auto-cutter fixing plate 3. Loosen the thumb-screw and remove the head cover. Head cover Thumb-screw Rev.
Confidential 4. Remove the ribbon frame spring and ribbon frame fixing plate; then remove the ribbon frame assembly. Ribbon frame fixing plate Ribbon frame assembly Ribbon frame spring 5. Remove the screw seuring the print head unit. 6. Disconnect the print head FPC and remove the print head unit. Print head unit Print head FPC Refer to the corresponding assembly section(s) in this chapter for the assembly procedure. 5-4 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual Removing the auto-cutter 1. Open the main cover assembly. 2. Remove 1 screw, and remove the auto-cutter cover. Remove the cable connector from the auto-cutter cover (See the second part of the illustration below). Then disconnect the autocutter cable from the cable connector for the auto-cutter. (The illustration does not have the main cover assembly. However, it’s not necessary to remove it.) screw Auto-cutter cover Auto-cutter cable Connector 3.
Confidential Removing the main circuit board assembly 1. Remove the lower plate. lower plate 2. Remove the interface circuit board assembly. Interface circuit board assembly 5-6 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual 3. Disconnect 5 cables. 4. Remove 5 screws. 5. Follow the steps below; then remove the main circuit board assembly. ① Slide the board toward the arrow ①. ② Move the 2 cables toward the arrow ②. ③ Move the board toward the arrow ③. ④ Once the board is released from the plate (marked with ④), the main circuit board can be removed from the printer.
Confidential Sub-assembly A Paper feed frame unit assembly 1. Apply G-31 to the middle of the paper hold roller shaft. 2. Pass the paper hold roller shaft through the paper hold plate spring and paper hold roller. Paper hold roller shaft Apply G-31 Paper hold plate spring Paper hold roller 3. Hold the paper feed roller assembly at the angle shown in the illustration and insert the thin end of the shaft into the paper feed frame assembly. Then move the roller assembly into place.
Confidential TM-U200 Series (Type B) Service Manual 4. Attach the paper feed reduction gear to its shaft as shown in the second illustration below. Make sure that the reduction gear is closer to the frame than the roller assembly gear. 5. Next, insert the J feed roller shaft holder (right) into the frame as shown in the illustration. (Paper feed roller assembly) J feed roller shaft holder (right) 6.
Confidential 7. Attach the paper feed motor to the paper feed frame assembly with a screw. Paper feed motor CCS-tite (M3x6) [0.69 to 0.88 N • m (7 to 9 kgf • cm)] Paper feed frame assembly 8. By fitting the U-cut portion of the upper paper guide to the shaft of the paper feed roller assembly, attach the paper guide to the paper feed frame assembly. Press the paper guide until it clicks. ✔ Check that the 2 dowels on the paper feed frame are in the rectangular holes on the upper paper guide.
Confidential TM-U200 Series (Type B) Service Manual 9. Insert the ends of the paper hold roller shaft into the paper feed frame assembly, as shown below. Paper feed frame assembly Paper hold roller shaft (assembled) 10. Hook the paper hold springs to the paper feed frame assembly and paper hold roller shaft. Hook the spring on the paper feed motor side first. (If you hook the other side first, the paper hold shaft is hard to hook.
Confidential ✔ Check that the corner edge of the paper hold plate spring is placed on the paper feed frame assembly as shown in the illustration below. ✔ Check that the paper hold plate spring is not deformed. Paper hold plate spring Corner edge Paper feed frame assembly Main Assembly 1 Ribbon switch lever, ribbon release spring, ribbon release lever, ribbon intermediate gear, ribbon transmission gear, ribbon take-up assembly, and ribbon drive plate assembly 1.
Confidential ✔ TM-U200 Series (Type B) Service Manual Check that the ribbon switch lever and ribbon release lever are attached in the proper directions. Notch Ribbon release lever Ribbon switch lever RE (3) Ribbon release spring A Base frame assembly B 4. Attach the ribbon intermediate gear to the base frame assembly. 5. Attach the ribbon transmission gear and ribbon take-up assembly together to the base frame assembly. 6.
Confidential Main Assembly 2 Tension plate assembly 1. Insert the tab of the tension plate assembly into the base frame assembly; then slide the tension plate in the direction of arrow 2 to lock it. Tab Tension plate assembly 2 1 Base frame assembly Main Assembly 3 Paper feed frame assembly 1. Place the paper feed frame assembly (sub assembly A) on the base frame assembly so that portion A is aligned with portion B. 2.
Confidential TM-U200 Series (Type B) Service Manual 3. Attach the screws. CBT-B (M3x10) [0.49 to 0.69 N • m (5 to 7 kgf • cm)] Paper feed frame assembly Rectangular hole Portion A Paper hold plate spring CBT-B (M3x10) [0.49 to 0.69 N • m (5 to 7 kgf • cm)] Portion A Tab Base frame assembly ✔ Portion B Check that the paper hold plate spring is not caught on the base frame assembly. Main Assembly 4 Carriage motor assembly 1.
Confidential 2. Hook the paper feed motor cable to hook A on the base frame assembly. Make sure to route the cable as shown in the illustration. 3. Route the carriage motor and paper feed motor cables outside the base frame as shown in the illustration. Paper feed motor cable Hook A Paper feed frame Carriage motor cable Main Assembly 5 Carriage sub assembly 1. Fit the belt over the carriage motor sub assembly gear and the tension plate gear.
Confidential TM-U200 Series (Type B) Service Manual Main Assembly 6 Carriage shaft assembly ✔ Pass the carriage shaft through the paper feed frame assembly and carriage sub assembly. At this time, hook the paper hold spring feet to the carriage shaft’s dowels, as shown in the illustration. Paper hold spring hook Carriage subassembly Carriage shaft Paper feed frame assembly ✔ Check that the paper hold spring hooks are hooked in the correct direction.
Confidential Main Assembly 7 Adjustment roller shaft holder assembly 1. Attach the adjustment roller shaft holders to the carriage shaft as shown in the illustration. Adjustment roller shaft holder Carriage shaft 2. Push the adjustment roller shaft holders and turn them 90 degrees in the direction of arrow C. The A portion points straight down. ✔ Check that the adjustment roller shaft holders click into place.
Confidential TM-U200 Series (Type B) Service Manual Main Assembly 8 Carriage guide shaft assembly 1. Insert the carriage guide shaft through the base frame assembly and carriage sub assembly and lock it with the RE. Carriage sub assembly Carriage guide shaft Base frame assembly RE (2.3) Main Assembly 9 Belt tension spring assembly 1. Hook the belt tension spring to the hooks on the tension plate assembly and paper feed frame assembly. 2.
Confidential 3. Move the belt tension spring from the paper feed frame’s hook to the base frame hook. Base frame hook Belt tension spring Main Assembly 10 Sensor assembly 1. Insert the sensor portion of the sensor assembly into the base frame assembly; then attach the board by pushing it in. 2. Press the board down to attach it completely. 3. Attach the paper detector switch to the base frame assembly.
Confidential TM-U200 Series (Type B) Service Manual 5. Position the paper detection switch sub assembly lead wires as shown in the illustrations, and make sure that the lead wires are as close as possible to the base frame surface. Paper detection switch sub assembly lead wires Sensor sub assembly’s lead wires Main Assembly 11 Carriage motor heat sink assembly 1. Attach the carriage motor heat sink to the carriage motor assembly, and turn the heat sink in the direction of the arrow until it stops.
Confidential Main Assembly 12 Print head FPC assembly 1. After folding the projections of print head FPC, insert the FPC under the arm of the base frame assembly while fitting the projections with the arm. 2. Fold the straight side of print head FPC. (See the figure.) 3. Pass the straight side of print head FPC through the slit in the base frame assembly. Projection Print head FPC Straight side Base frame assembly Arm Armsection 4. Pull out the print head FPC from the back of base frame assembly. 5.
Confidential ✔ TM-U200 Series (Type B) Service Manual The projections of print head FPC must be held with the arm of base frame assembly. Print head FPC processing Hook Main Assembly 13 Print head unit 1. Attach the print head FPC to the print head unit. 2. Place the print head FPC under the hooks on the carriage sub assembly, and then secure the print head unit to the carriage sub assembly with the screw. Rev.
Confidential 3. Place the print head FPC under the hooks on the carriage sub assembly, and then secure the print head unit to the carriage sub assembly with the screw. CPP-tite (M3x10) [0.49 to 0.69 N • m (5 to 7 kgf • cm)] Print head unit Carriage sub assembly A Print head FPC O-10 application points Hooks ✔ Make sure there is space between the slanting edge of the print head FPC and slanting side of the carriage sub assembly, and between the FPC edge and portion A.
Confidential TM-U200 Series (Type B) Service Manual 2. Attach the dowel of the right cover fixing plate into the hole in the paper feed frame and secure it with the screw. CCS-tite (M3x6) [0.69 to 0.88 N • m (7 to 9 kgf • cm)] Right cover fixing plate Paper feed frame Left cover fixing plate CCS-tite (M3x6) [0.69 to 0.88 N • m (7 to 9 kgf • cm)] Rev.
Confidential Main Assembly 15 Ribbon frame earth plate 1. Put the ribbon frame earth plate in the carriage guide shaft. Ribbon frame earth plate Carriage guide shaft Main Assembly 16 Ribbon frame assembly, ribbon frame spring, and ribbon frame fixing plate 1. Apply G-31 to the switching point of the ribbon frame on the ribbon switch lever. (A line of lubrication: length 4 mm x wide 1 mm) 5-26 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual 2. Apply G-31 to the tip of release point of the ribbon frame assembly on the base frame assembly. (A point of lubrication: diameter 1 mm) 3. Apply G-31 to the each ribbon frame assembly mounting shaft (left and right) in the base frame assembly. (A line of lubrication: length 2 mm x wide 1 mm) 4. Attach the shaft (A) and (B) of the base frame assembly to the ribbon frame assembly. 5.
Confidential Main Assembly 17 Thumb-screw and head cover 1. Place the thumb-screw into the hole in the head cover and secure the RE (2.5) in the center of the thumb-screw. 2. Insert the tab of the head cover into the left cover fixing plate first, and then rotate and secure with the thumb-screw while aligning the dowel. Tab Thumb-screw Head cover RE (2.5) Left cover fixing plate Dowel 5-28 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual Main Assembly 1 (Case Unit) Lower cutter plate assembly 1. Attach the lower cutter plate to the upper plate and secure it with the screws. CPS-tite (M3x6) [0.59 to 0.78 N • m (6 to 8 kgf • cm)] Upper plate Rev.
Confidential Main Assembly 2 (Case Unit) Upper plate assembly 1. Turn over the printer mechanism assembly. 2. Align the rectangular hole with the hook, hole A with dowel B, and then secure the plate with the screw. Upper plate Hole C Hole A Rectangular hole Dowel D Hook Dowel B CBS-tite (M3x5) (0.59 to 0.78 N • m (6 to 8 kgf • cm)] ✔ Make sure hole C is aligned with dowel D. 5-30 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual Note: When you remove the upper plate, lift it up in the direction of arrow 1 slightly; then move it in the direction of arrow 2 to release the hook to remove the plate completely. Upper plate Arrow 1 Arrow 2 Hook Main Assembly 3 (Case Unit) Main circuit board assembly 1. Attach the main circuit board assembly to the upper plate by attaching the power switch side first and then the drawer kick-out and power connectors side.
Confidential ✔ Make sure to use the correct screw for each location. CP(0) (M3x6) [0.59 to 0.78 N • m (6 to 8 kgf • cm)] CPS-tite (M3x6) CP(0)(M3x6) [0.59 to 0.78 N • m (6 to 8 kgf • cm)] CPS-tite (M3x6) [0.59 to 0.78 N • m (6 to 8 kgf • cm)] Main circuit board assembly Power switch Upper plate 5-32 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual Main Assembly 4 (Case Unit) Inserting the cables 1. Insert the lead wires of the print head FPC, the sensor assembly, and the auto-cutter assembly into the connectors. 2. Insert the paper feed motor cable into CN6 and the carriage motor cable into CN5. At this time, make sure to insert the cables so that black or red colored side connects to the pin 1 side of each connector.
Confidential 2. Bring out the paper feed motor and carriage motor cables through portion C and the sensor assembly lead wires through portion D. 3. Secure the lower case with the screws. [Adjustment] Perform the platen gap adjustment by referring to the Adjustment section at the end of this chapter. Lower case Portion B Portion C Portion D CPT-B (M3x12) [0.59 to 0.78 N • m [6 to 8 kgf • cm)] Portion A Upper plate CPT-B (M3x12) [0.59 to 0.
Confidential TM-U200 Series (Type B) Service Manual Main Assembly 6 (Case Unit) Manual cutter assembly and auto-cutter fixing plate 1. Attach the manual cutter to the paper feed frame assembly and secure it with the screw. CBS-tite (M3x5) [0.69 to 0.8 N • m [7 to 9 kgf • cm)] Manual cutter Paper feed frame ✔ Check that the manual cutter is aligned with the paper feed frame as shown in the illustration below. Paper feed frame Manual cutter Rev.
Confidential 2. While aligning the dowels, install the auto-cutter fixing plate and secure it with the screw. 3. Secure the earth plate with the screw. T CBS-tite (M3x5) [0.59 to 0.78 N • m (6 to 8 kgf • cm)] Auto-cutter fixing plate CP(O) (M3x6) [0.59 to 0.78 N • m (6 to 8 kgf • cm)] Earth plate 5-36 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual Main Assembly 7 (Case Unit) Auto-cutter assembly 1. To attach the auto-cutter assembly to the auto-cutter plate assembly, fit the auto-cutter assembly onto the left dowel of the auto-cutter plate assembly first, and then fit the right side onto the right to match the right dowel. Auto-cutter assembly Dowel Dowel Auto-cutter plate assembly CBS-tite (M3x4) (0.59 to 0.
Confidential When you do not attach the release lever: Attach the auto-cutter lock lever with the RE (2.3); then attach the auto-cutter lock lever spring with the RE (2.3). RE (2.3) RE (2.3) Auto-cutter lock lever Auto-cutter lock lever spring 3. Align the auto-cutter plate assembly with the holes of the auto-cutter fixing plate. 4. Attach the auto-cutter plate assembly to the auto-cutter fixing plate.
Confidential TM-U200 Series (Type B) Service Manual 5. Connect the auto-cutter cable to the cable connector for the auto-cutter. Cable connector of the auto-cutter Auto-cutter cable 6. Insert the connectors you connected in step 6 into the slit in the auto-cutter cover. Insert the cable wires of the auto-cutter into the other slit in the auto-cutter cover. Auto-cutter cover The other slit Slit Rev.
Confidential 7. While aligning the dowel, install the auto-cutter cover, and secure it with the screw. Arrange the cable wires so that they come through the cut portion shown in the illustration. CBS-tite (M3x5) (0.59 to 0.78 N • m (6 to 8 kgf • cm)] Auto-cutter cover Cut portion Main Assembly 8 (Case Unit) Paper roll receive rollers, upper case, guide roller, and switch panel assemblies 1.
Confidential TM-U200 Series (Type B) Service Manual 7. Remove any dust and dirt from the switch panel mounting surface and paste the switch panel on the upper case. Apply G-31 CPT-B (M3x12) CPT-B (M3x12) [0.59 to 0.78 N • m [6 to 8 kgf • cm)] Switch panel Guide roller Upper case Apply G-31 Apply G-31 Paper roll receiver rollers Lower case Rev.
Confidential 5-42 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual Main Assembly 9 (Case Unit) Interface circuit board assembly and connector plate 1. Turn over the printer. 2. Attach the connector plate to the interface circuit board assembly and secure with the hexagon lock screws (serial interface) or the CPS-tite screws (parallel interface). 3. Connect the interface circuit board assembly to the main circuit board assembly and secure with the screws Serial Interface. CP(0) (M3x6) [0.59 to 0.
Confidential Parallel Interface CPS-tite(M3✕6) (4 to 6 kgf • cm) Interface circuit board assembly ✔ Check that the interface board assembly is firmly connected to the main circuit board assembly. 5-44 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual Main Assembly 10 (Case Unit) Lower plate, ROM cover, and rubber foot assembly The procedures in this section differ depends on if an EP-ROM is used or a flash memory is used on the main circuit board. See Addendum 1 in this manual for more detail about the main circuit board. For EP-ROM equipped main circuit board 1. Attach the lower plate to the lower case and secure it with the screws.
Confidential For flash memory equipped main circuit board 1. Attach the lower plate to the lower case and secure it with the screws. 2. Attach the ROM cover to the lower plate and secure it with the screws. 3. Attach the rubber feet to the lower case. For the rubber foot attached to the front of the printer, turn the foot lightly until it stops. CPS-tite (M3x6) [0.59 to 0.
Confidential TM-U200 Series (Type B) Service Manual 2. Secure the hinge assembly of the main cover assembly to the upper case with the screws (2 portions). Main cover assembly CPT-B (3x12) (0.59 to 0.78 N • m (6 to 8 kgf • cm)] Hinge assembly CPT-B (3x12) (0.59 to 0.78 N • m (6 to 8 kgf • cm)] Upper case Main Assembly 12 (Case Unit) Near-end detector assembly (optional) 1. Attach the near-end detector lever to the near-end detector frame. Rev.
Confidential 2. Connect the lead wire assembly’s connector to the near-end detector and attach it to the near-end detector frame with the screw. CBB-tite (M2x8) [0.1 to 0.2 N • m (1 to 2 kgf • cm)] Near-end detector Lead wire assembly Near-end detector frame Near-end detector lever 3. Decide whether you want to install the spacers. The amount (A) of paper remaining (including the paper roll core) when the near-end detector senses a paper near-end is changed by the spacers.
Confidential TM-U200 Series (Type B) Service Manual 4. Attach the spacers (if desired) and near-end detector assembly to the lower case and secure them with the screws. Make sure the spacers are positioned in the correct direction, as shown in the illustration. Connector CN11 Round corner Round corner of spacer Near-end detector assembly CPT-B (M3x12) [0.59 to 0.78 N • m (6 to 8 kgf • cm)] 5. Insert the near-end detector’s lead wires into the connector.
Confidential ✔ After assembling the near-end detector assembly, make sure the near-end detection lever moves smoothly. Adjustment Platen gap adjustment 1. Turn the ribbon frame knob in the direction of the arrow to remove the ribbon frame assembly from the printer and remove the manual cutter. 2. Move the print head unit so that it is 1 to 2 cm (0.39 to 0.79”) from portion A of the paper hold plate spring and insert the scaling gauge between the print head unit and platen. 3.
Confidential TM-U200 Series (Type B) Service Manual 4. Perform the adjustment at two positions. Ribbon frame assembly Ribbon frame knob Portion A Scaling guage Paper hold plate spring Wide Narrow Print head unit Platen Adjustment roller shaft holder Rev.
Confidential 5-52 Disassembly, Assembly, and Adjustment Rev.
Confidential TM-U200 Series (Type B) Service Manual Appendix RS-485 Serial Interface Data transmission: Bit serial Synchronization: Asynchronous Handshaking: Depends on the DIP switch settings (DTR/DSR or XON/XOFF control ) Signal levels: 2.0 V to 5.0 V: Logic 1 0.0 V to 0.
Confidential If the electric potential of CS1 is higher than CS2, the TM series printer is ready for communication (the host is ready to receive data). If the electric potential of CS1 is lower than CS2, the TM series printer is not ready for communication (the host is not ready to receive data).
Confidential TM-U200 Series (Type B) Service Manual RS-485 interface connector pin assignments and functions Pin number Signal name I/O Function 1 FG — Frame ground 2 SD1 O Transmit data 3 RD2 O Transmit data 4 RD1 I Receive data 5 RD2 I Receive data 7 SG — Signal ground 8 RD1 O 1) When DTR/DSR is selected, this signal indicates whether the host computer is BUSY or READY. DR1 > DR2 indicates the printer is READY and DR1 < DR2 indicates the printer is BUSY.
Confidential XON/XOFF Transmission Timing When XON/XOFF control is selected by the DIP switch, the printer transmits XON/OFF to the host according the table below. NOTE: ❏ For the different models, XON/XOFF transmission timing differs, depending on the settings of the off-line conditions by the DIP switches. Refer to the specifications for the printers.
Confidential TM-U200 Series (Type B) Service Manual "L" indicates: Printer transmission data Printer reception data SD1 > SD2 RD1 > RD2 The transmission data is H = 1, L = 0 Note: This format is used when the UART for RS-232 is connected to the RS-485 driver. Printer reception data level RD1 RD2 Read data H L Receiving data line is at the LOW level L H Receiving data line is at the HIGH level Printer transmission data level Rev.
Confidential Parts Layout Main circuit board There are three types for the main circuit board parts layout, type D, AD, and CD. To distinguish the types, see Addendum 1 of this manual. Main circuit board (type D) There are two different parts layouts for the D-type main circuit board. One is for the board using standard size of devices like a resistor having lead wires on its both sides. The other is for the new board using small size of devices called chip device which does not have any lead wires.
Confidential TM-U200 Series (Type B) Service Manual This is the layout for the D-type board using chip devices: Rev.
Confidential Main circuit board (type AD) A-8 Appendix Rev.
Confidential TM-U200 Series (Type B) Service Manual Main circuit board (type CD) Rev.
Confidential RS-232 Serial Interface Circuit Board A-10 Appendix Rev.
Confidential TM-U200 Series (Type B) Service Manual IEEE 1284 Parallel Interface Circuit Board Rev.
Confidential RS-485 Serial Interface Circuit Board A-12 Appendix Rev.
Confidential TM-U200 Series (Type B) Service Manual Appendix Circuit Diagrams Main Circuit Board There are three types for the main circuit board diagram, type D, AD, and CD. To distinguish the types, see Addendum 1 of this manual. Rev.
Confidential TM-U200 Series (Type B) Service Manual Main circuit board diagram (type D) There are two different diagrams for the D-type main circuit board diagram. One is for the board using standard size of devices like a resistor having lead wires on its both sides. The other is for the new board using small size of devices called chip device which does not have any lead wires.
Confidential TM-U200 Series (Type B) Service Manual This is the diagram for the D-type board using chip devices: +5V +5V +5V DSR RST #25 RST #RST +5V +24B +5V R27 R49 DSR OR #25 R50 + 2 4 B Q31 D26 CR A/DSW1 D25 Q15 U9 1 + 5 V IN 3 C42 R44 D14 5 OUT C NC GND Q32 D1 #4 C26 DSW1 U5 GND WR GND 21 WR ALE RD RD 4 33 60 61 MCE RESET X1 ALE RD WR X2 MCE C15 29 28 27 17 P77 P76 P75 P71 A[8..
Confidential TM-U200 Series (Type B) Service Manual For the main circuit board that the DSW2 is type AD +24B DSR RST #25 RST CLKREQ C15 PCE2 TP161 PCE1 TP160 C18 A16/DSW11 A15 A14 A13 A12 A11 A10 A9 #RST DSR RST #25 RST RES/DSW6 RD SD R26 R21 R25 R24 WR +5V +5V C41 A19/DSW8 A18/BTDET A8 A7 A6 A5 A4 A3 A2 CLK_REQ CLK/DTR RTS DET CTS R104 R14 R1 R43 R52 DK2 U101 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A15 A14 A13 A12 A11 A10 A9 A8 NC NC WE RESET NC NC RY/BY A18/NC A1
Confidential TM-U200 Series (Type B) Service Manual For the main circuit board that the DSW2 is type CD +24B DSR RST #25 RST CLKREQ C105 A16/DSW11 A15 A14 A13 A12 A11 A10 A9 R21 R25 R24 C41 A19/DSW8 A18/BTDET A8 A7 A6 A5 A4 A3 A2 CLK_REQ CLK/DTR RTS DET CTS R104 R14 R1 R43 R52 DK2 A15 A14 A13 A12 A11 A10 A9 A8 NC NC WE RESET NC NC RY/BY A18/NC A17 A7 A6 A5 A4 A3 A2 A1 A16 BYTE VSS D15/A-1 D7 D14 D6 D13 D5 D12 D4 VCC D11 D3 D10 D2 D9 D1 D8 D0 OE VSS CE A0 C24 +5V C40 AD6 C25 AD5 AD4 28 27 26 2
Confidential TM-U200 Series (Type B) Service Manual RS-232 Serial Interface Board TO MAIN BOARD CN2 +5V C1 TP2 +12V U1 16 C2 4 5 RD DSR 13 8 SD DTR 14 7 TO HOST 15 FG SD/SD1 RD/SD2 RS/RD1 /RD2 DR/INIT1 SG /DR1 /DR2 /CS1 /CS2 ER INIT2 SHELL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 VCC C2+ V+ C1+ C2- C1- R1I R2I R1O R2O T1O T2O T1I T2I GND V- 2 RTS DSR DSR C3 R21 1 DTR DTR +5V +5V 3 12 9 RD DSR 11 10 SD DTR + 1 2 V 6 + 5 V + 5 V SD RD SD RD C7 #
Confidential TM-U200 Series (Type B) Service Manual IEEE 1284 Parallel Interface Board +5V DD5V D1 CEN7..
Confidential TM-U200 Series (Type B) Service Manual RS-485 Serial Interface Board TP2 R12 R9 R13 CS1 8 1 CS2 7 2 CTS DR2 6 3 DR DR1 5 4 CS1 R10 CS2 R8 +5V U2 + 5 V +5V CTS RD1 RD2 R1 CN2 SG R5 R2 TO MAIN BOARD R17 CTS SG U1 R6 8 1 7 2 SD2 6 3 SD1 5 4 DR R3 RD SD R16 DR SG SG R18 +5V +5V TO HOST SG FG SD/SD1 RD/SD2 RS/RD1 /RD2 DR/INIT1 SG /DR1 /DR2 /CS1 /CS2 ER INIT2 SHELL Rev.
Confidential TM-U200 Series (Type B) Service Manual Printer Mechanism Unit Overall Exploded Diagram CPP-tite (M3 x 10) Print head FPC Print head unit CCS-tite (M3 x 6) Belt Left cover fixing plate J feed roller shaft holder (left) CBS-tite (M3 x 5) Right cover fixing plate Ribbon drive plate assembly Tension plate assembly Carriage sub assembly Manual cutter RE (2.3) Paper hold spring Carriage shaft RE (2.
Confidential TM-U200 Series (Type B) Service Manual Case Unit Overall Exploded Diagram This is the diagram that the changes described in Addendum 1, 2, and 3 are not taken. CPS-tite (M3 x 6) CBS-tite (M3 x 5) Auto-cutter lock lever spring Lower cutter plate Hexagon lock screws (*) Auto-cutter assembly Main cover assembly Auto-cutter cover Upper plate RE (2.3) RE (2.
Confidential TM-U200 Series (Type B) Service Manual Case Unit Overall Exploded Diagram This is the diagram that the changes described in Addendum 1, 2, and 3 are taken. Auto-cutter lock lever Lower cutter plate spring Hexagon lock screws (*) CPS-tite (M3 x 6) CPS-tite (M3 x 6) CBS-tite (M3 x 5) Release lever Auto-cutter assembly Main cover assembly Auto-cutter cover Upper plate RE (2.
Confidential TM-U200 Series (Type B) Service Manual Printer Mechanism Unit Lubrication Points Diagram (1) O-10 (5) G-31 (6) G-31 (7) G-31 (2) G-31 (8) G-31 (7) G-31 Rev.
Confidential TM-U200 Series (Type B) Service Manual Case Unit Lubrication Points Diagram (3) G-31 (3) G-31 (4) G-31 (4) G-31 Rev.
Confidential TM-U200 Series (Type B) Service Manual Addendum 1 Main Circuit Board Types and Maintenance Changes In ANK font model, the following three changes were made with regard to the main circuit board. ❏ EP-ROM equipped main circuit board no longer used ❏ Number of switches in DIP switch set DSW2*1 changed from 4 to 8 ❏ Function assignment of 8-switch DIP switch set DSW2*1 changed*2 *1 DIP switch set DSW1 is unchanged.
Confidential Function assignment of 8-switch DIP switch set DSW2 changed in ANK font model The following changes were made in ANK font model*3. (There has been no change for multilingual font model.) *3 Some products are not applicable with this modification depends on destination of shipment even if it is ANK font model. Serial interface model The "printer reset signal enabled/disabled" function was changed from DSW2-7 and DSW2-8 to DSW2-3 and DSW2-4.
Confidential TM-U200 Series (Type B) Service Manual Servicing Precautions During servicing and repair of the printer, observe the following points. ❏ Use the correct main circuit board ❏ Use the correct DIP switch setting table ❏ Use the correct circuit diagram For details, please see the following sections. Using the correct main circuit board When replacing the main circuit board, select the correct board for the printer. Determine the board according to the following sequence. 1.
Confidential 3. Check the latest main circuit board type and the part code. Using the correct DIP switch setting table The DIP switch set DSW2 can have either 4 or 8 switches. For the 8-switch DSW2, there are two types with different function assignments. Before setting the DIP switch set DSW2, check which type is installed in the printer. Identifying the DIP switch set DSW2 type The following three types exist for the DIP switch set DSW2.
Confidential TM-U200 Series (Type B) Service Manual DIP switch setting tables This section contains setting tables for the various DIP switch types. Settings for DIP switch set DSW1 are also shown, but there have been no changes for this DIP switch set.
Confidential Parallel interface model DSW1 DIP switch Function ON OFF 1 Auto line feed Enabled Disabled 2 Receive buffer capacity 40 bytes ANK model: 1000 bytes Multilingual model: 512 bytes 3 Undefined --- --- 4 Undefined --- --- 5 Undefined --- --- 6 Undefined --- --- 7 Undefined --- --- 8 Busy condition ・Receive buffer full ・Off-line ・Receive buffer full DIP switch Function ON OFF 1 Print column selection 42 CPL/35 CPL 40 CPL/33 CPL 2 Internal use (no change a
Confidential TM-U200 Series (Type B) Service Manual DIP switch setting tables (type AD) Serial interface model DSW1 DIP switch Function ON OFF 1 Data receive error Ignored Prints "?" 2 Receive buffer capacity 40 bytes ANK model: 1000 bytes Multilingual model: 512 bytes 3 Handshaking XON/XOFF DTR/DSR 4 Data word length 7 bits 8 bits 5 Parity check Yes No 6 Parity selection Even Odd 7 Baud rate selection 4800 bps 9600 bps 8 Busy condition Receive buffer full ・Off-line ・Rec
Confidential Parallel interface model DSW1 DIP switch Function ON OFF 1 Auto line feed Enabled Disabled 2 Receive buffer capacity 40 bytes ANK model: 1000 bytes Multilingual model: 512 bytes 3 Undefined --- --- 4 Undefined --- --- 5 Undefined --- --- 6 Undefined --- --- 7 Undefined --- --- 8 Busy condition ・Receive buffer full ・Off-line ・Receive buffer full DIP switch Function ON OFF 1 Print column selection 42 CPL/35 CPL 40 CPL/33 CPL 2 Internal use (no change a
Confidential TM-U200 Series (Type B) Service Manual DIP switch setting tables (type CD) Serial interface model DSW1 DIP switch Function ON OFF 1 Data receive error Ignored Prints "?" 2 Receive buffer capacity 40 bytes ANK model: 1000 bytes Multilingual model: 512 bytes 3 Handshaking XON/XOFF DTR/DSR 4 Data word length 7 bits 8 bits 5 Parity check Yes No 6 Parity selection Even Odd 7 Baud rate selection 4800 bps 9600 bps 8 Busy condition Receive buffer full ・Off-line ・Rec
Confidential Parallel interface model DSW1 DIP switch Function ON OFF 1 Auto line feed Enabled Disabled 2 Receive buffer capacity 40 bytes ANK model: 1000 bytes Multilingual model: 512 bytes 3 Undefined --- --- 4 Undefined --- --- 5 Undefined --- --- 6 Undefined --- --- 7 Undefined --- --- 8 Busy condition ・Receive buffer full ・Off-line ・Receive buffer full DIP switch Function ON OFF 1 Print column selection 42 CPL/35 CPL 40 CPL/33 CPL 2 Internal use (no change a
Confidential TM-U200 Series (Type B) Service Manual Using the correct circuit diagram Depending on the type of DIP switch set DSW2, there are the following three types of circuit diagrams. Circuit diagram type (DIP switch set DSW2 type) Type D Type AD Type CD Determine the correct circuit diagram according to the same procedure as described in the section "Using the correct DIP switch setting table". The circuit diagrams are given on pages A-13, A-14, and A- 15. Rev.
Confidential Addendum 1-12 Main Circuit Board Types and Maintenance Rev.
Confidential TM-U200 Series (Type B) Service Manual Addendum 2 Lower Plate Change and ROM Spacer Abolition Because the storage device for the printer control program was changed from EP-ROM to flash memory, the ROM spacer is no longer required and was abolished. Due to this change, the shape of the lower plate also has changed. Note: For details on the main circuit board change, please refer to Addendum 1 of this manual. Description of Change The following change was made.
Confidential Servicing Precautions The ROM spacer serves fasten the EP-ROM to the socket. When servicing an EP-ROM equipped main circuit board, be sure to observe the following points. ❏ Use a lower plate with the old shape. ❏ Attach the ROM spacer to the ROM cover. Addendum 2-2 Lower Plate Change and ROM Spacer Abolition Rev.
Confidential TM-U200 Series (Type B) Service Manual Addendum 3 Auto-Cutter Release Tab Change To improve the open/close action of the auto-cutter, the auto-cutter release tab was changed. Consequently, the assembly procedure is now different, and there has been a change in the spare parts supply unit. Description of Change The following change was made. Description Before change R.E (2.3) Auto-cutter lock lever spring R.E (2.3) Auto-cutter lock lever After change R.E (2.
Confidential Assembly Procedure Change Please refer to pages 5-37 and 5-38 of this manual. Spare Parts Supply Unit Change The following change was made to the spare parts supply unit. Description Before change Auto-cutter lock lever After change Auto-cutter lock lever assembly Release lever (added) Auto-cutter lock lever Addendum 3-2 Auto-Cutter Release Tab Change Rev.
