DECwriter 110i Printer DECcolorwriter 120ic Printer TM Service Manual 0i r 11 write DEC Order Number: EK-LJ12E-SV-001 COVERSV.
First Printing, October 1994 Digital Equipment Corporation makes no representations that the use of its products in the manner described in this publication will not infringe on existing or future patent rights, nor do the descriptions contained in this publication imply the granting of licenses to make, use, or sell equipment or software in accordance with the description.
Table of Contents Table of Contents Preface ................................................................................. vii Summary ............................................................................................... vii Associated Documentation ................................................................... viii General .............................................................................. 1-1 Introduction .....................................................................
Table of Contents Functional Description ...................................................... 2-1 Printer Components and Internals ........................................................ 2-2 Locating the Functional Components ..................................................................... 2-3 General Block Diagram ........................................................................ 2-4 Monochrome Ink Jet Print Head Functioning .......................................
Table of Contents Installation .......................................................................... 3-1 General Rules ....................................................................................... 3-1 Line Voltage Supply ................................................................................................ 3-1 Locating the Printer ................................................................................................. 3-2 Environmental Conditions ..........................
Table of Contents User Maintenance ............................................................. 4-1 Precautions ........................................................................................... 4-1 Nozzle Cleaning and Priming ............................................................... 4-2 Automatic Nozzle Cleaning .................................................................................... 4-2 Cleaning and Servicing the Monochrome Print Head ..........................................
Table of Contents Electrical Interconnections .............................................. 7-1 Major Components on the Main Board ................................................ 7-2 Power Supply Circuit ........................................................................... 7-4 Connections between the Main Board and Drive Mechanisms ............ 7-5 Connector Signals ................................................................................ 7-6 Parts Replacement ..............................
Preface Preface This Service Manual provides the mechanical and electronic information needed to service the LJ 110/120 ink-jet printer. Refer to this manual only if the fault has not been corrected after following the troubleshooting steps explained in the User Guide that comes with this printer. Summary This service manual is intended for the DECwriter 110i (LJ 110) monochrome printer and the DECcolorwriter 120ic (LJ 120) color printer.
Preface Associated Documentation EK-LJ12E-UG DECcolorwriter 120ic Printer - User Guide EK-LJ12E-RF DECcolorwriter 120ic Printer - Setting Up Your Printer EK-LJ11*-UG DECwriter 110i Printer - User Guide EK-LJ11*-RF DECwriter 110i Printer - Setting Up Your Printer The DECcolorwriter 120ic Printer documentation set is only available in English.
General 1 General This chapter introduces the features of the LJ 110/120 ink jet printer, its technical characteristics and details the firmware and the available character generators. Introduction The LJ 110/120 is an ink-jet printer that combine excellent quality printing with a fast writing speed, a low noise level and considerable versatility in the paper handling.
General The LJ 110/120 can be connected to a PC with standard parallel or optional serial interface. Compatible with MS-Windows and many other software applications, it can be used in most working environments. The resident firmware emulates the HP DeskJet 500C printer (PCL III +).
General Printing Speed - DOS and similar environments: 180 cps in Draft, 120 cps in LQ - Windows and similar environments: - Draft : up to 3 pages per minute (ppm) - Letter Quality : up to 3 ppm NOTE: These values may vary depending on the software application and / or the type of computer used Work Load Not to exceed 1000 pages per month, average of 400 pages per month, including 160 color pages. Printer life: 25000 pages.
General Noise Emission ISO 7779 print test (ECMA 74 text) with 10 cpi pitch: 46 dBA Letter Quality print mode Front bystander position Electrical Characteristics - Voltage: 115 V (+/- 10%) 220 / 230 V (+6% / -10%) 240 V (+ 6% / - 10%) - Frequency: 50 or 60 Hz - Power absorbed (operate): 25 W Certification For power supply voltage 115 V (USA and Canada) - Electromagnetic Compatibility: FCC Class B “Certified” - Safety Regulations: USA: UL 1950/478, Canada: CSA C22.
General Firmware and Character Generators Basic Emulation This printer's basic firmware is stored in a 4 MB EPROM mounted on the main board. It emulates both HP Deskjet 500 and HP Deskjet 500C printers, with all the relative character generators. The LJ 110/120 automatically selects between the two emulations depending on the type of print head installed (monochrome print head: HP Deskjet 500; color print head: HP Deskjet 500C).
General Character Sets Character Sets Character Sets CP 437 - International Danish OPE II Roman-8 Spain II PC 8 Denmark/Norway CP 863 - French Canadian CP 850 (Multilingual) PC-WIN - ANSI Windows 3.1 ECMA 94 Latin 1 CP 852 - Latin 2 ISO 4 - United Kingdom ISO 8859 / 2 - Latin 2 ISO 21 - Germany PC-WIN - Eastern Windows 3.1 ISO 69 - France CP 857 - Turkey ISO 15 - Italy ISO 8859 / 9 (Turkey) ISO 60 - Norway 1 PC-WIN - Turkish Windows 3.
General Resident Fonts The character fonts residing in the printer firmware are grouped according to the requested page format, being either portrait or landscape. Listed in the following tables are all the fonts available, along with their character heights and spacings.
General List of Fonts for Landscape Page Formats Font Height (dots) Pitch (cpi) Courier 6 / 12 / 24 10 / 20 Courier italic 6 / 12 / 24 10 / 20 Courier 6 / 12 / 24 16.67 / 33.34 Letter Gothic 6 / 12 / 24 12 / 24 Letter Gothic 4.75 / 9.5 / 19 16.67 / 33.34 Optional Fonts Available with the Basic Emulation Consist of a series of characters with the same ISO code as the basic character generator but with different fonts.
General "Times Nordic" Card (256 Kbytes) Font Height Pitch Page Format Setup N0 Times Nordic 30 Proportional Portrait 111 Times Nordic 14 Proportional Portrait 112 Times Nordic italic 14 Proportional Portrait 112 Times Nordic 12 Proportional Portrait 114 Times Nordic italic 12 Proportional Portrait 115 Times Nordic 10 Proportional Portrait 116 Times Nordic italic 10 Proportional Portrait 117 Times Nordic 8 Proportional Portrait 118 Times Nordic italic 8 Proportional P
General Options All the options can be installed directly by the user by following the instructions provided in the single cartons. Color Kit • Set of 1 color print head + 1 storage box + 2 Printer Drivers diskettes (including Digital DECcolorwriter 120ic Printer Driver) LJ11X-BK PCMCIA Font Cards Each font card is supplied with a booklet which illustrates the font card contents and explains the font selection procedure. • Font Card B Prestige Elite / 7-10 pt / 16.
General Serial Interface • User-installable kit for EIA RS 232C / V24 interface LJ50X-SI Parallel Data Cables • 10 ft parallel shielded cable BC19M-10 • 6 ft parallel shielded cable BC19M-06 Accessories Monochrome Print Head and Ink Cartridge The monochrome print head, consisting of a printing unit and a replaceable ink cartridge, is available packaged as follows: • Set of 1 complete monochrome print head (printing unit + ink cartridge) and 1 monochrome ink cartridge LJ50X-AB • Set of 2 monochrome
Functional Description 2 Functional Description This chapter describes the different functional and physical parts of the LJ 110/ 120 printer. It also explains how an ink jet print head functions. 2-1 S-2.
Functional Description Printer Components and Internals 5 4 3 6 2 1 7 10 9 11 8 12 13 15 16 14 17 20 19 21 22 18 2-2 S-2.
Functional Description Locating the Functional Components The figure on the previous page show a front view of the components of the printer.
Functional Description General Block Diagram Serial Interface (EIA RS 232C /V24) Power Supply Parallel Interface (Centronics) Memory Card Power Group - Transformer (115, 220, 240 V) - Fuse - ON/OFF Switch MAIN BOARD Operator Panel Paper Feed Motor Carriage Motor ASF Tray Manual Paper Feed Print Group Carriage Reset and Setup Parameter Read Sensor NOTE: The blocks with dashed lines are options. 2-4 S-2.
Functional Description Monochrome Ink Jet Print Head Functioning Ink Jet Print Head Description The monochrome ink jet print head is made up of an interchangeable resin shell containing 50 print nozzles and an electrical circuitry with 50 resistive heating elements (see figure 2-1a). The nozzles are assembled on a nickel and gold compound referred to as being electroformatted, and have a conical shape as shown in figure 2-1b.
Functional Description Fig. 2-1a: Ink jet print head and ink cartridge 50µ µm Nozzle Fig. 2-1b: Nozzle cross section Heating Element 140-150µ µm Heating Element - Nozzle Pad INK CARTRIDGE Flexible Electric Grid Cover Ink Sponge Shell Ink Filter Outer Casing Fig. 2-1c: Exploded view of the print head Fig. 2-1: Ink-jet print head 2-6 S-2.
Functional Description Ink Jet Printing Each nozzle expels an ink bubble whenever an electrical signal is applied for a few microseconds to the corresponding resistive heating element. The small amount of ink that comes into contact with the resistive heating element the moment the electrical signal is applied boils and begins to vaporize thus creating an ink bubble. As the ink bubble begins to expand, it pushes the ink out of the nozzle and onto the paper.
Functional Description Nozzle Fig. 2-2a Initial stage. Resistive Heating Element Ink Fig. 2-2b An electrical signal is applied to the heating element and an ink bubble is created. The ink exits the nozzle. Fig. 2-2c The ink bubble expands to its maximum size. Fig. 1-4d The ink bubble breaks and the ink is propelled onto the paper. Fig. 1-4e New ink from the cartridge replaces the droplet that has been expelled. Fig. 2-2: The creation of an ink droplet 2-8 S-2.
Functional Description Print Nozzles A total of 50 print nozzles are arranged on two rows of 25 nozzles each. In each row the nozzles are sequentially placed on each column as shown in figure 2-3. Matrix components GROUP B (13) GROUP D (12) GROUP A (12) GROUP C (13) - Dampering/balancing nozzles A, C and B, D for the outermost 2-50 and 149 nozzles. - Ink cartridge balancing nozzles E and L. Fig. 2-3: Nozzle matrix 2-9 S-2.
Functional Description Information on the Resistive Heating Element's Activation Circuitry The resistive heat elements are divided into four groups. Two groups have 12 elements, the other two groups have 13. Only one element can be activated at each time in each group, and therefore no more than four elements can be activated simultaneously. To avoid induction between adjacent elements, each element will be activated according to a specific sequence (see figure 2-4).
Functional Description Color Ink Jet Print Head Functioning Ink Jet Print Head Description The color ink-jet print head is made up of an interchangeable sealed shell containing 51 print nozzles, three liquid ink cartridges (one for each major color) and an electrical circuitry with 51 resistive heating elements (see figure 2-5a).
Functional Description Fig. 2-5a: Color ink jet print head 50µ µm Nozzle Fig. 2-5b: Nozzle cross section Heating Element 140-150µ µm Heating Element - Nozzle Pad INK CARTRIDGE Flexible Electric Grid Outer Casing Cover Ink Sponges Ink Filter Fig. 2-4c: Exploded view of the print head Fig. 2-5: Ink-jet print head 2-12 S-2.
Functional Description Ink-Jet Printing Turn to section page 2-7 for a full explanation on ink-jet printing. Print Nozzles A total of 51 print nozzles are arranged on two vertical rows of 25 and 26 nozzles and are divided horizontally in three groups, one for each color. 44 46 48 50 Magenta 20 22 24 26 Blue 2 4 6 8 Yellow Figure 2-6 shows how the nozzles are placed on each row. 1 3 5 7 19 21 23 25 45 47 49 51 Fig. 2-6: Nozzle matrix 2-13 S-2.
Functional Description Information on the Resistive Heating Element's Activation Circuitry The resistive heat elements are divided into four groups. Two groups have 12 elements, the other two groups have 13. Only one element can be activated at each time in each group, and therefore no more than four elements can be activated simultaneously. To avoid induction between adjacent elements, each element will be activated according to a specific sequence (see figure 2-7).
Functional Description Operating Controls Operator Panel The operator panel on the LJ 110/120 has three buttons and two indicators. On-Line Install Cartridge Form Feed On Fig. 2-8: Operator panel The operator panel buttons allow you to install the print head, expell the paper and switch the printer ON or OFF line. The indicators signal machine status, and out of paper or error conditions. For more information about the indicator meanings, see chapter 6. 2-15 S-2.
Functional Description Buttons Functions The following table describes the functions of the keys in the different printer operating modes. Some functions are obtained by pressing one or more keys simultaneously. On-Line Toggles between ON LINE and OFF LINE while changing the indicator status. Install Cartridge Moves the print head carriage to the print head installation/replacement position.
Functional Description Print Head Selection Lever The color selection lever is located on the right-hand side of the paper guide, just under the top cover. When installing a monochrome (black ink) print head, move this lever away from the printer (BLACK). When installing a color print head, move this lever towards the inside of the printer (COLOR). COLOR BLACK Fig. 2-9: Print head selection lever NOTE: Always make sure that the lever is positioned according to the type of print head installed.
Installation 3 Installation This chapter quicly describes the general installation rules, where to install the printer and how to prepare it for use (unpacking, connecting, loading the paper...). For details about the installation procedure, see the LJ 110/120 Printer User Guides. General Rules The following rules need to be followed to ensure optimum printer performance and to avoid making service calls for problems that do not directly involve the printer.
Installation For power supply voltage 115 V (USA and Canada) - Electromagnetic Compatibility: FCC Class B “Certified” - Safety Regulations: USA: UL 1950/478, Canada: CSA C22.2 For power supply voltage 220 - 240 V - Electromagnetic Compatibility: EN 55022 Class B, CEE 87/308, VDE 0871 level B (DBP Verf. 243/1991) - Safety Regulations: EN 60950 + Nordic Deviations, Germany: GS (EN 60950/9.
Installation Unpacking the Printer Checking the Box Contents The printer is shipped in a single box containing the following components: 1. LJ 110/120 printer 2. Print head storage box (LJ 120 only or LJ 110 color kit) 3. Monochrome print head 4. Color print head (LJ 120 only or LJ 110 color kit) 5. Setting Up Your Printer booklet 6. Printer User Guide 7. Paper output tray 8. Paper input tray 9. Printer driver diskettes (number depending on the printer type) 6 7 8 5 4 9 1 2 3 Fig.
Installation Connecting the Printer to a Power Outlet Firstly make sure that the voltage indicated on the printer's electrical data plate matches the actual line voltage rating, then plug the power cord into the wall outlet. Read section "General Rules" for information on optimum printer performance. Installing the Print Head The print head is equipped with an ink detection sensor that guarantees constant quality printing by indicating when the ink cartridge is nearly empty.
Installation • Holding the print head by its outside shell, remove the protective tape from the nozzles in the direction of the arrow indicated below. Never touch the nozzles area, nor rest the print head on it. Fig. 3-3: Removing the protective tape • With the electrical contacts facing the front of the printer, insert the print head in its slot by pushing it downwards (1), then pull it towards the front of the printer until it clicks (2). 1 2 Fig.
Installation Inserting the Paper Input Tray Paper is loaded into the printer from the paper input tray located underneath the printer. Before loading a pack of paper, however, install the outer part of this tray supplied with the printer. The paper input tray can hold up to 70 x 21 lb (80 g/m2), sheets of paper. • Insert the paper feed tray's mounting studs into the respective slots on the lower rear of the printer (1).
Installation Mounting the Paper Output Tray The paper is expelled from the rear of the printer into a paper output tray which is supplied with the printer. This tray is positioned on the top rear of the printer. Insert the tray's mounting studs into the respective slots on the top rear of the printer. This tray can hold up to 30 x 21 lb (80 g/m2) sheets of paper. The center part of the tray can be extended outward so that the tray can hold longer forms. Fig. 3-6: Mounting the paper output tray 3-7 S-3.
Installation Loading the Paper Paper is loaded into the printer through the ASF tray that the printer is equipped with. This tray can hold up to 70 x 18 to 24 lb (70 to 90 g/m2) sheets of paper. The following table will aid you in determining the printable area for the two most common paper formats used, A4 and Letter/Legal. The figure on the facing page shows the meaning of the listed values. A4 Letter/Legal mm inches mm inches M 210.0 8.26 215.9 8.5 W 203.2 8.0 203.2 8.0 L 3.4 0.
Installation 1 T L R B W M Fig. 3-7: Print area (1: Printer mechanical path) On the lower front of the printer there are two levers which control the centering and the securing of the paper in the paper tray. A B Fig. 3-8: A: Paper securing lever - B: Paper centering lever 3-9 S-3.
Installation • Move the paper centering lever (B) located on the front side of the printer towards the right. • Lower the paper securing lever (A) and move towards the left. Fig. 3-9: Moving the levers to insert the paper • To make paper loading easier, extend the central part of the paper tray without removing it. • Leaf the pack of paper. • Place the paper in the tray and then push it towards the printer until touching the feed rollers inside the tray. Fig. 3-10: Loading the paper 3-10 S-3.
Installation • Close the central part of the tray against the paper. Fig. 3-11: Closing the paper tray • Once paper is loaded in the tray, move the lower level (B) to the left in order to close the lateral guides and center the paper in the tray. • Move lever (A) to the right and then upwards. Fig. 3-12: Moving the levers to secure the paper 3-11 S-3.
Installation Loading the Paper Manually You can manually load paper and envelopes one at a time through the slot on the front of the printer. The following table will aid you in determining the printable area for the most commonly used envelope sizes, C5, DL, COM-10 and C6. C5 DL COM-10 mm inches mm inches mm inches M 229.0 9.02 220.0 8.66 241.3 9.5 W 203.2 8.0 203.2 8.0 203.2 8.0 L - - - - - - R - - - - - - T 1.0 0.04 1.0 0.04 1.0 0.04 B 15.24 0.6 15.24 0.
Installation To manually load a sheet of paper into the printer: • Power on the printer. • Place a sheet of paper on the support and align the sheet against its left-hand side (envelopes should be aligned against the right-hand side of the support). • Push the paper into the paper feed slot until touching the feed rollers. • Press the Form Feed button. Fig.
Installation Inserting a Memory Card Memory cards can contain firmware emulations, an EPROM with a determined group of character fonts, or additional memory (RAM or Flash EPROM). The memory card can be added to the printer at a later date. Information on the characteristics of the specific memory card and how to install it are provided in an appropriate document supplied with the card itself. Power off the printer before removing or inserting a memory card.
Installation • Power the printer back on again. • Program the new Setup parameters if the memory card contains an emulation, or select the external font if the memory card contains an external font. Installing the Serial Interface The serial interface is a user-installable option. Installation instructions are provided with the interface itself. The following figure shows the serial interface's CANNON 25-pin connector along with the relative transmission signals.
Installation Print Test To check whether the printer is installed correctly, simply run a print test. To run the print test: • Make sure there is paper in the input tray. • Power the printer off and then on again while pressing the Install Cartridge button. • The printer will load a sheet of paper and begin to print the test. The monochrome print test is four pages long, the color print test one page long.
Installation The 36-pin connection cable is NOT supplied with the printer and must not be more than 2.5 meters long. Optional parallel interface cables are however available. The following figure gives the connector's pin-out. STROBE 01 DATA 0 02 19 GROUND DATA 1 03 21 GROUND 22 GROUND DATA 2 04 DATA 3 05 20 GROUND 23 GROUND DATA 4 06 DATA 5 07 24 GROUND 25 GROUND DATA 6 08 26 GROUND DATA 7 09 ACKNOWLEDGE 10 BUSY 11 27 GROUND 28 GROUND PAPER EMPTY 12 30 GROUND 31 INIT.
Installation Installation Setup You can configure the printer with a printer driver corresponding to the basic HP DJ 500C emulation. The LJ 110/120 comes with a diskette containing the specific Windows 3.1 drivers, making it possible to take full advantage of the features offered by this printer model. The Digital DECwriter 110i monochrome printer driver is provided with the LJ 110 and the LJ 120.
Installation If the optional serial interface has been installed: Baud Rate 2400 Parity None Handshaking Hardware Programmable Parameters You can change the factory default settings using a total of seven selector groups. Programming the Parameters and Running Setup • Power off the printer. • Open the printer's top cover (1), then the selector switches cover (2). 1 1 2 2 Fig. 3-19: Programming Selectors • Set the selectors according to the parameters given in the tables on next pages.
Installation First Group of Selectors (1-6) The six selectors in this group allow you to select the different fonts available. Second Group of Selectors (A-H) The eight selectors in this group allow you to define the print attributes and other features. Third Group of Selectors (I-J) The two selectors in this group are reserved. Fourth Group of Selectors (1-3) The three selectors in this group allow you to select the paper size.
Installation Fig. 3-21: Fonts selector switches settings 3-21 S-3.
Installation Fig. 3-22: Character sets selector switches settings 3-22 S-3.
Installation Fig. 3-23: Character sets selector switches settings 3-23 S-3.
Installation SELECTOR SWITCHES SETTINGS PRINT ATTRIBUTES PAP. SIZE SERIAL INTERFACE Ink Save Mode Enabled A4 Auto Line Feed Enabled 300 dpi Print Resolution Text Scale Mode Enabled Perforation Skip Disabled Manual Feed Enabled Draft Print Quality Compressed Text Width ON POSITION A B C D E F G H Baud Letter Legal Parity None Even Odd Envelop. Handshake Other 1 2 3 Hard Soft 1 2 3 4 5 Fig. 3-24: Selector switches settings 3-24 S-3.
User Maintenance 4 User Maintenance This chapter describes basic maintenance operations the user will be required to perform during the printer's working life. Precautions Preventive maintenance is not required, however during each service intervention it is suggested that you: − Make sure there is no trace of ink on the surface of the print head nozzles. If you do find trace of ink, clean or replace the rubber cleaning cap.
User Maintenance Nozzle Cleaning and Priming The printer automatically cleans the external surface of the nozzles during paper movement. It is up to the user, however, to restore ink after one or more nozzles have been found to be clogged. The print test runs a gradual check on the nozzles. This test is particularly indicated for finding faulty nozzles. Automatic Nozzle Cleaning Nozzle cleaning is carried out by a rubber cap located at the far right-hand side of head travel.
User Maintenance - After a print job, tightly seal the nozzle bay so the nozzles are protected against dust and to avoid the ink from drying-out when exposed for a certain period of time. Since on the LJ 110/120 this operation is carried out automatically after a few seconds of printer inactivity, wait a few seconds before powering off the machine after a print job. If a black out occurs while the printer is on, power off the printer and manually push the print head to its farthest right-hand position.
User Maintenance • Pressing down the ink slide (labeled ) (1), move it slowly from right to left along the full length of its shaft (2). Release the slide and return it to the right edge (3). 1 2 3 Fig. 4-1: Priming the print head • Repeat the operation until ink appears in the tube below the slide. • Press Install Cartridge to move the print head carriage to the head loading position, and repeat the above operation to empty the tube.
User Maintenance Cleaning and Servicing the Color Print Head Also the color ink-jet print head demands special care as far as nozzle cleaning is concerned. Given their particular structure, dust or the drying-out of exposed ink can easily clog the nozzles. Listed below are some useful tips that will guarantee the optimum use of the print head. - Remove the print head from its sealed container only when you are about to install it in the printer.
Diagnostics and Tests 5 Diagnostics and Tests This chapter describes the several diagnostics and testing procedures available on the LJ 110/120 printer. These procedures are designed to help the user to check the machine correct functioning. Power On Diagnostics The machine firmware has been designed so that a check is made on the printer's major function each time the printer is powered on.
Diagnostics and Tests The following information is provided: - The printer's selected emulation and firmware release. - The type of print head installed. - Whether the nozzles are operating correctly (Print Head Test). If the test finds that the ink droplet is not propelled from one or more nozzle but the Nozzle Test is successful, you may need to prime the print head (for monochrome print head only). - The electrical continuity of the nozzle activation circuitry (Nozzles test).
Diagnostics and Tests Fig. 5-1: Example of monochrome print test: page 1 5-3 S-5.
Diagnostics and Tests Color Print Test The color print test requires a single sheet of paper and is divided into three separate subtests, one for each color. With the color print test structured in this way you can check that each nozzle group works correctly. Data Scop Printing (Hex Dump) To make sure that the command codes sent from the system are received correctly, this feature prints the corresponding ASCII code (hexadecimal) of all the characters that are input into the printer.
Diagnostics and Tests Troubleshooting Guide This section talks about some of the most significant faults that may be detected, along with their probable cause and corrective action. These faults have been grouped as follows: Problems at Power On These faults concern the Vac/Vdc power and control circuits. - If the printer does not power on (the On indicator is off and there are no mechanical movements), make sure the line voltage is available.
Diagnostics and Tests - If the Nozzle Test shows that one or more nozzles are not receiving the electrical signal, remove the print head and clean the electric contacts on both the carriage and print head using a clean brush or a cloth dampened with an alcohol solution. If the fault persists, replace the print head. If this did work, try replacing the print head carriage and relative flat cable. Replace the main board as last resort.
States and Indicator Meanings 6 States and Indicator Meanings This chapter describes the several operting and functional states relative to the printer working. It also describes the indicators meanings, considering both normal and fault conditions. Operating States - ON LINE On-Line indicator lit The printer is ready to receive data. - OFF LINE On-Line indicator off State imposed by the operator, who has pressed the On-Line button. Any printing operation is suspended.
States and Indicator Meanings Functional States One of the following states will be present in the ON LINE or OFF LINE operating states. - FREE No data to be printed. - BUSY From the reception of data until the completion of its printing. - IDLE Data to be printed, but awaiting a Form Feed command (from console or line). Indicator Meanings On-Line - Lit Indicates that the printer is in the ON LINE operating state (under operator and computer system control).
States and Indicator Meanings Indicator Warnings On-Line and On indicators flashing alternately State caused by end of ink condition. Load a new print head, and then return the printer to the ON LINE operating state by pressing the Install Cartridge button. On-Line and On indicators flashing with the sequence On-Line twice followed by On once State caused by incompatibility between the type of print head inserted and the position of the print head selection lever.
Electrical Interconnections 7 Electrical Interconnections This chapter describes the electrical interconnectionns between the different functional elements of the printer. 7-1 S-7.
Electrical Interconnections Major Components on the Main Board J2 J3 J12 J13 J14 J15 J16 IC1 IC3 IC4 IC7 IC8 IC9 IC10 IC11 IC12 IC13 IC14 IC16 IC18 IC19 IC20 IC21 IC22 F1 XT1 Paper feed motor Carriage motor Console Print head Print head Memory card Parallel interface 20 Volt regulator IC87R Paper feed motor driver Carriage motor driver TL074 LM 393 Print head driver Print head driver LM 393 LM 317 LM Socket for a PIGGYBACK board 80C186 CPU Dynamic RAM 256-bit EEPROM NADINE ASIC Photoemitter Photoemitter F
Electrical Interconnections Fig. 7-1: Main board 7-3 S-7.
Electrical Interconnections 7-4 S-7.
Electrical Interconnections Connections between the Main Board and Drive Mechanisms Carriage Reaet and Setup Photosensor Carriage Motor Print Head Print Head Flat Cable Memory Card Paper Feed Motor J16 J15 J12 Power Group J13 J1 Operator Panel J14 J2 J3 MAIN BOARD Out of Paper Photo sensor Color Print Head Detection Photosensor Fig. 7-2 : Connections between the main board and drive mechanisms 7-5 S-7.
Electrical Interconnections Connector Signals MAIN BOARD POWER SUPPLY J1 J2 J3 J12 J13 J14 2 1 PAPER FEED MOTOR 1 OUT1A OUT1B OUT2A OUT2B 4 CARRIAGE MOTOR 1 OUT1A OUT1B OUT2A OUT2B 4 OPERATOR PANEL 1 VCC PWRLED GND LOCAL1 CARTRIDG FORMFEED VCC LOCLED 8 COD1 S51 COD2 S6 S10 S8 C1 S2 S4 S12 S14 S16 S22 S18 S20 S24 S28 S26 S30 S32 S38 S40 S42 S44 S46 S36 S34 S48 INKON S50 C2 C3 CHB 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 26 27 28 29 30 31 32 33 S49 RINK1 S47 S33 S35 S45
Electrical Interconnections MAIN BOARD J15 J16 /STRB1 CD 0 CD 1 CD 2 CD 3 CD 4 CD 5 CD 6 CD 7 /ACK 0 BUSY0 PE 0 ONLINE0 AUTOFD1 GND VCC GND AD3 AD4 AD5 AD6 AD7 /CE1 AD10 /OE A11 A9 A8 A13 A14 /WE VCC VPP1 A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 AD0 AD1 AD2 GND 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
Parts Replacement 8 Parts Replacement This chapter explains the different disassembly/reassembly procedures. Premiliminary Warnings To ensure maximum safety, power off the printer and unplug it from the line voltage before beginning any operation. All operations must be carried out in a clean and lear area. Make sure the print head is in its parking position before powering off the printer.
Parts Replacement Replacing the Monochrome Ink Cartridge • Press Install Cartridge to move the print head carriage to the print head installation/replacement position. • Open the printer's top cover. • Do not remove the print head, but just the ink cartridge (2) by moving the plastic tab located on the print head (1). • Remove the protective tape from the new ink cartridge. • Immediately insert a new ink cartridge by gently pressing it downwards until the lever snaps back into place.
Parts Replacement Replacing the Print Head • Press Install Cartridge to move the print head cariage to the print head installation/replacement position. • Open the printer's top cover so as to access the print head. • Remove the print head by first pushing it towards the rear of the printer (1) and then lifting it out of its slot (2). • Be very carefull in holding the print head if it needs to be installed back into the printer. Follow the instructions explained in section "Preliminary Warnings".
Parts Replacement Removing / Remounting the Printer's Casing and Base • • • • Disconnect the interface cable. Remove the paper input and output trays. Remove the memory card, if inserted. Open the top cover and remove the paper insertion guide 1 by lifting it from the front and then turning it to free the studs from their respective slots. • Free the casing from catches 2, 3, 4 and 5 (do so by inserting the blade of a screwdriver in the points just indicated).
Parts Replacement Removing / Remounting the Mechanical Assembly • Disassemble the base from the frame as explained in previous section. • Disconnect the print head's flat cables from connectors 1 and 2. • Press catch 3 to release the mechanical assembly from the electronic board and power supply support and remove connectors 4 and 5. 1 2 4 5 3 Fig. 8-4: Removing the mechanical assembly 8-5 S-8.
Parts Replacement Removing / Remounting the Main Board • Remove the mechanical assembly as explained in previous section. • Remove connector 1. • Release board 2 from catches 3 and 4. NOTE: If the main board needs replacing, remember to remove the firmware and character generator EPROMs from the old board so they can be installed on the new one. 1 4 3 2 Fig. 8-5: Removing the main board 8-6 S-8.
Parts Replacement Removing / Remounting the Power Group • Remove the mechanical assembly as explained in the corresponding section. • Remove connector 1. • Press catch 2 and lift power group 3. 1 3 2 Fig. 8-6: Removing the power group 8-7 S-8BIS.
Parts Replacement Removing / Remounting the Operator Panel • Remove the printer casing as explained in the corresponding section but remove just the operator panel connector. • Press where indicated by the arrow and slide off operator panel 1. 1 Fig. 8-7: Removing the operator panel 8-8 S-8BIS.
Parts Replacement Removing / Remounting the Paper Feed Motor • Remove the mechanical assembly as explained in the corresponding section. • Release the motor by turning it in the direction of the arrow. • Remove the motor after releasing the cable from the cable clips. Fig. 8-8: Removing the paper feeed motor 8-9 S-8BIS.
Parts Replacement Removing the Mechanical Assembly Front Structure • Remove the mechanical assembly as explained in the corresponding section. • Disconnect flat cables 1 and 2. • Disconnect the ink discharge tube 3. • Release the carriage motor cable from cable clip 4. • Press catch 5 and partly lift the front structure 6. • Press catches 7 and 8 to separate the front and rear structures. • Remove bush 9.
Parts Replacement Removing / Remounting the Carriage Motor • Remove the mechanical assembly as explained in the corresponding section. • Remove the front structure as explained in the corresponding section. • Disconnect belt 1. • Slide off shaft 2. • Release the motor by turning flange 3 in the direction of the arrow. • Remove flange 3 and motor 4. 4 1 3 2 Fig. 8-10: Removing the carriage motor 8-11 S-8BIS.
Parts Replacement Removing / Remounting the Head Transport Carriage • Remove the mechanical assembly as explained in the corresponding section. • Remove the front structure as explained in the corresponding section. • Disconnect belt 1. • Slide off shaft 2 in the direction of the arrow. • Remove carriage 3 after disconnecting its belt. NOTE: If the belt tightener comes away, mount it back on as shown in the highlight. 1 3 2 Fig. 8-10: Removing the head transport carriage 8-12 S-8BIS.
