CRADEN P E R I P H E R A L S C O R PO R A T I ON DP8 & DP9 DOCUMENT PRINTERS TECHNICAL MANUAL P/N 99090 REVISION 10 5/2010 7860 AIRPORT HIGHWAY, PENNSAUKEN, NJ 08109 (856) 488-0700 (856) 488-0925 FAX www.craden.
WARNING This equipment generates, uses and can radiate radio frequency energy and, if not installed in accordance with the instruction manual, may cause interference to radio communications. It has been tested with a Class A computing device and has been found to comply with Part 15 of FCC rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment.
DP8 & DP9 Technical Manual Table of Contents 1.0 DP8 & DP9 DOCUMENT PRINTERS - FUNCTIONAL SPECIFICATIONS 1 2.0 INSTALLATION 2.1 INSTALLATION PROCEDURE 2.2 RESHIPMENT 2 3 3.0 OPERATION 3.1 RIBBON CARTRIDGE LOADING 3.2 KEYPAD OPERATION 3.3 DISPLAY OPERATION 3.4 DOCUMENT INSERTION 3.5 CONFIGURATION 3.5.1 Printer Parameters 3.5.2 Communication Parameters 3.5.3 Override Parameters 3.5.4 Service Parameters 3.6 DIAGNOSTICS 3.6.1 Power Up Diagnostics 3.6.2 Enhanced Diagnostics 3.7 SELF TEST 3.
.0 5.0 3.13.6 Ribbon Smear 3.13.7 Erratic Document Feed, Mispositioning or Overprinting 3.13.8 Rollers Run at Power-Up or After Document Ejected 3.13.9 Erratic Character Spacing or Carriage Hitting End Stops 3.13.10 Interface Inoperative THEORY OF OPERATION 4.1 OVERVIEW 4.1.1 Carriage Drive Assembly 4.1.2 Document Drive Assembly 4.1.3 Switching Power Supply 4.1.4 Main Printed Circuit Board 4.1.5 Keypad/Display Assembly 4.2 ELECTRONICS IN DETAIL 4.2.1 Low Voltage Supplies 4.2.2 Microprocessor System 4.2.
.6 6.0 TROUBLESHOOTING 5.6.1 Basic Troubleshooting Procedure 5.6.2 No Display 5.6.3 Defective Keypad 5.6.4 Defective Sensor 5.6.5 No Document Motion 5.6.6 No Carriage Motion 5.6.7 No Print or Light Print 5.6.8 Print Quality 5.6.9 Missing Dots 5.6.10 Erratic Document Feed or Mispositioning 5.6.11 Erratic Character Spacing or False Document Jams 5.6.12 Interface Inoperative 5.6.13 Diagnostic Flowchart 38 38 38 39 39 40 40 40 41 41 41 41 42 5.7 5.
DP8 & DP9 DOCUMENT PRINTERS - FUNCTIONAL SPECIFICATIONS 1.1 Print Characteristics Print Method 24-wire dot matrix impact, automatic thickness compensation Print Spacing 5, 6, 8.5, 10, 12, 17, 20 and 24 chars/inch Fonts 96 char. ASCII, international character set Windows True Type & graphics Print Speed (chars/second) Characters/inch 10 12 Dot Graphics (dots/inch) 60,120,180, 360 horizontal; 72, 180 vertical Feed Speed 50 mSec.
2.0 INSTALLATION 2.1 Installation Procedure 1. Read 3.1 to 3.5.2 on Operation and Configuration. 2. Press the cabinet latches on the lower front cabinet sides and rotate the cabinet upwards. 3. Remove the foam blocks on each side of the carriage. 4. Install the ribbon cartridge (See 3.1) 5. Connect the interface cable. (See 3.11.3 for cabling information). 6. Check that the power switch on the printer rear is off (“0” side depressed). Connect the line cord between the printer and an electrical outlet.
2.2 Reshipment If possible, retain the original packing material for reshipment. If the original packing material is not used, insure that printer and the printer carriage will not move during shipment and that the unit has sufficient protective padding. Ribbon Cartridge Printhead Cartridge Clip Tabs Tabs Lift Ring Ribbon guide & shield DP8 Ribbon Fit, Sides DP9 printer with cabinet open, lift ring down and ribbon guide down DP9 Ribbon Fit, Sides 3.0 Operation 3.
3.2 Keypad Operation EJECT: ejects an inserted document if the print buffer is empty. Should a document remain partially in the printer, press eject again to fully eject paper. If „CLEAR EJECT JAM” is displayed, press the CLEAR key and EJECT again. A: moves a document up 1/60" with each depression. If held depressed, the document will slowly move into the printer. Also initiates document insertion if the printer is configured for key rather than automatic insertion. (See 3.5.
3.4 Document Insertion Document edge guide Insertion procedures may be customized to satisfy varied applications and user preferences. (See the Printer Parameters in 3.5.1). If auto alignment is enabled, gently insert the document upper left corner toward the point where the left edge guide and the feed rollers meet. Release the document when the rollers grip it and it will be automatically aligned and inserted to the first print line.
3.5.1 Printer Parameters Press 9 2 FUNCT to display the following parameters or press 9 0 0 FUNCT to print them on a previously inserted document. Changes may be made as described above. Before proceeding, see 3.4 and select the insertion sequence which best fits your application. Default settings are indicated in bold print. DISPLAY REMARKS LINES/INCH = 5 or 6 Select 5 or 6 lines per inch vertical spacing CHARS/INCH = 10, 12 or 17 Select 10, 12 or 17 characters per inch horizontal spacing.
3.5.2 Communication Parameters Press 9 3 FUNCT to display the following Communication Parameters or press 9 0 0 FUNCT to print them on a previously inserted document. Changes may be made as described in 3.5. Default settings are indicated in bold. DISPLAY REMARKS PROTOCOL = DTR, XON/XOF or PARALLEL INTRF. Select the protocol to match your system configuration (See 3.11.2). Select PARALLEL if the parallel interface option is installed and skip the next four items.
3.5.4 Service Parameters Press 9 4 FUNCT to display the following Service Parameters. These parameters are factory set specifically for each printer and recorded on the configuration label behind the display inside the printer. They do not usually need to be modified by the user. If changes are made to these settings write the new setting on the configuration label. CAUTION: CHANGE OF THESE PARAMETERS BY UNTRAINED PERSONNEL MAY RESULT IN INCORRECT PRINTER OPERATION. 3.
3.6.2 Enhanced Diagnostics Diagnostics execute after pressing 9 0 FUNCT. If no faults exist, PROM REVISION XX, ROM TEST OK and RAM TEST OK will display. If a fault exists, "BAD" will display until A is pressed to advance to the next test. Then SENSORS LFBMRCE will display. L is the left home carriage sensor; F and B are the front and back document sensors, M and R are the middle and right skew sensors, C is the cabinet open sensor and E is the document edge sensor.
3.10 Programming CAUTION: DURING PROGRAM DEVELOPMENT ALL PRINTING SHOULD BE DONE ON SINGLE SHEET PAPER UNTIL PRINT IS CORRECTLY FORMATTED. PRINTING ACROSS THICK FOLDS AND DOCUMENT EDGES CAN DAMAGE THE PRINTHEAD. Two separate command sets, C and I, are selectable either from the keypad using 9 3 FUNCT (see 3.5.2) or the interface. Mode C is compatible with previous versions of this printer while mode I is compatible with popular PC based printers. Many commands are identical in both C and I modes.
ESC H ESC I n ESC J n ESC K ESC L ESC R ESC S 1 ESC T ESC W n ESC X mn ESC Y ESC Z ESC [ @ ESC [ F ESC [ I ESC [ J ESC [ d ESC [ g ESC ] ESC d ESC ~ C ESC ~ I FS GS RS n US 1B 48 1B 49 n 1B 4A n 1B 4B 1B 4C 1B 52 1B 53 01 1B 54 1B 57 n 1B 58 1B 59 1B 5A 1B 5B 40 1B 5B 46 1B 5B 49 1B 5B 4A 1B 5B 64 1B 5B 67 1B 5D 1B 64 1B 7E 43 1B 7E 49 1C 1D 1E n 1F End correspondence quality print Begin CQ (n=2) or normal (n=0) print Feed document up n/216 inches Begin 60 dot/inch graphics Begin 120 dot/inch graphics Set
Commands unique to I mode: ESC 0 sets line spacing to 1/8 inch. ESC 1 sets line spacing to 7/72 inch. ESC 2 sets line spacing stored by a prior ESC A n. ESC 3 n sets line spacing to n/216 inch where n is a single binary coded byte. ESC 5 n sets auto LF if n=1 and resets it if n=0. A line feed is automatically performed when a CR is received if auto LF is set.
ESC X mn sets left and right margins at columns m and n. Printing begins at column m and must stop at column n. The document may be no wider than (n+5)/10 in. as the n value limits carriage motion. This can increase throughput on narrow documents. ESC [ @ followed by 04 00 00 00 m n hex selects double high and wide print. Double high print is set if the low order nibble of m is 2 and single high is set if it is 1.
ESC~C clears all data out of the buffer and switches the interface to Mode C. 3.10.4 Low Density Graphics Commands These commands emulate low-density graphics printed by a 9-dot printhead. New applications should use the high-density graphics commands intended for a 24-dot printhead. Low-density graphics may be printed at 60, 120 or 240 dots/inch (dpi) horizontally by 72 dpi vertically. ESC K sets 60 dpi, ESC L or ESC Y set 120 dpi and ESC Z sets 240 dpi.
3.10.7 Configuration Commands HT changes the machine configuration and must be followed by 2 characters of the form 01PVHFCS and 01LEIBDQ where: P = 1: Permanent configuration change.
DC1 or DLE request keypad data. Upon receipt of either, all keypad input that has been pressed since the previous DC1 or DLE will be transmitted. A maximum of 16 strokes can be buffered. Transmitted characters will be one of the following: ASCII Meaning ASCII Meaning 0-9 Numeric keys 0-9 < Either A or B key : FUNCTion key = EJECT key ; ENTER key ? End of buffer The last character transmitted is always a ?. If a DC1 or DLE is received and no keys have been pressed only a ? will be transmitted.
3.11.2 Installing Craden Drivers on WINDOWS NT, 2000, XP, VISTA, OR 7 (32-bit): A firmware upgrade may be required to run the Vista/7 driver. Contact Craden for details. If the printer is connecting via a USB interface, first install the USB drivers per 3.11.3. 1. Click START, Settings, Printers. Double click Add Printer and click Next. 2. Select local or network printer (local unless the printer is not connected to this PC) and click Next. 3. Select the port where the printer is connected. Click Next. 4.
12cpi, and lowest quality, fastest printing draft 10 and 12cpi. Draft should not be used on passbooks. These fonts can be selected like any other font after loading the driver and selecting the printer as the default printer. They will print and display correctly in WYSIWIG programs like MS Word only if a font size is selected that displays characters at their correct spacing.
3.12.3 Interface Signals & Cables The interface provides for RS-232 communication. All signals are available on a 9 pin male connector equivalent to Cinch DB-9P. All connectors have 4-40 threaded inserts for positive mating. Pin assignments are as follows: Pin Signal 2 Transmit Data (TD) 3 Receive Data (RD) 4 Request to Send (RTS) 5 Signal Ground 6 Data Set Ready (DSR) 7 Clear To Send (CTS) 8 Data Terminal Ready(DTR) Description From printer, transmits printer status. To printer, receives data & commands.
3.13.3 No Document Motion If a document will not advance upon insertion: 1. Press EJECT if a previous document had been manually removed without an eject command. 2. Press A if configured for DOCUMENT INSERT WITH A KEY (see 3.5.1). 3. Use 9 0 FUNCT to check the front document sensor (see 3.6.2). 3.13.4 Carriage Fault or No Carriage Motion If the carriage will not move after a document is inserted: 1. Remove the foam packing blocks from both sides of the carriage. 2.
4.0 THEORY OF OPERATION 4.1 OVERVIEW The DP8 and DP9 Printers handle a large variety of documents. The two printers are identical except that the DP9 is 3.2” wider. The mechanism consists of a printhead, a carriage drive assembly and a document drive assembly. The electronics consist of a switching power supply, a Main PCB, a sensor PCB and a keypad/display assembly. 4.1.1 Carriage Drive Assembly The carriage drive assembly positions the printhead as it prints each line of characters.
4.1.4 Main Printed Circuit Board The Main PCB is located in the rear of the printer and contains power supply, control and driver electronics. The regulated +38VDC is converted to +5VDC, +12VDC and –12VDC by a switching regulator on the main PCB. The +38VDC drives the printhead and stepper motors. The control electronics are based on a 68HC12 microcontroller, a 128 Kbyte flash memory and 32Kbyte RAM.
Motor rotation occurs by sequentially changing the phase and current signals to the two motor coils. Motor speed is controlled by how rapidly the signals are changed. Following is a state table where each state change rotates the document motor rotor 1/400 of a revolution (1/120" of document motion) and there are 8 distinct states before the pattern repeats. Direction of motor rotation can be reversed by moving up rather than down through the state table.
+38V A Phase 3718 I0 current Current Control I1 current Phase Control D C VREF Comp. One Shot B R4 Typ 0 U20 - 15 2.7 mSec 5.5 mSec 5v A 0v 0.4v R4 B J2 - 1 C 0.0v 30v 38v 0v 30v 38v J2 – 3 D 0v Fig. 4.
4.2.4 Printhead Drivers During printing, 24 bits of print dot data are serially shifted into U3 to U5. A FIRE pulse at U5 pin 12 then transfers the 24 bits to the U3 to U5 outputs. Each high bit turns on a printwire by turning on power MOSFETS Q10 to 33. Timer U13 applies +38VDC to the other side of all printwire coils via Q5 and power MOSFET Q7. After about 100 usec.
12 FIRE Q26 TYP. RCLK D U5 10 NO CHOP SRCLR Q D23 TYP. S 15 Q8 +38VDC D Q4 S Q7 FIRE EXT D D34 D35 U13 Timer Q5 3 U12 S 6 D6 FIRE NO CHOP FIRE EXT U5 PIN 15 U13 PIN 3 -- 38V Q7 SOURCE -- 70V 50V -- Q26 DRAIN COIL CURRENT Fig. 4.
5.0 MAINTENANCE 5.1 LUBRICATION AND CLEANING 5.1.1 Lubrication There are no lubrication points in the printer. All parts are either permanently lubricated or are designed to operate dry. No lubricants should be used. They may adversely affect operation. 5.1.2 Document Feed Roller Cleaning 1. Open the cabinet. 2. Moisten a lint-free cloth with isopropyl alcohol and wipe the front rollers while rotating the gear on the end of the roller shaft. Do not use any strong solvents in place of alcohol. 3.
5.1.4 Printhead Cleaning Perform if printwires stick when printing begins or print quality becomes intermittent. Be sure to check the ribbon first! The 73297-8 Printer Cleaning Kit contains all necessary tools. 1. Open the cabinet and remove the ribbon cartridge. 2. Remove the printhead attachment screw. 3. Disconnect the printhead from the printhead flex cables. 4. Clean the tip of the printhead nose where the printwires extend from the printhead with an alcohol wetted napkin.
5.2 SERVICE PARAMETER SET-UP PROCEDURE It may be necessary to change service parameters that compensate for certain mechanical tolerances. These parameters are listed on a label inside the printer and may be changed if necessary by 94 FUNCT(see 3.5.4). If mechanical parts are replaced some parameters may have to be reset. New parameter values should be marked on the configuration label.
5.4 MECHANICAL ADJUSTMENTS 5.4.1 Printhead Gap Too large a gap causes light print and missing dots. Too small a gap causes ribbon smear. 1. Open the cabinet, raise the carriage with the lift ring and remove the ribbon cartridge. 2. Hold the ribbon shield at its corners between the shield face and shield base. Raise the ribbon guide plate and push the shield down and slide it to the right side to remove it. 3. Lower the carriage. Insert a narrow .015" (.
5.4.1.1 Ribbon Shield Removal / Replacement The ribbon shield prevents ribbon fabric from rubbing on and smearing printed media. It is a consumable. Replace the shield every four to five ribbon replacements or when it is damaged. Watch the video at www.craden.com/ribbonshield.wmv . 1 2 Carriage Shaft Lifter Ring Open the cabinet, center the carriage and pull the lifter ring out and down to raise the carriage. Remove the ribbon cartridge.
5.4.1.1.1 Ribbon Shield Face Inspection A high percentage of printers sent to Craden for repair have a ribbon shield that has reached end of life and is the primary cause of the printer‟s problem. Document jams, damaged documents, streaking, poor print quality, and document skewing can often be alleviated by replacing ribbon shields after four to five ribbon replacements. Below is a guide to assist in ribbon shield inspection. New ribbon shield. Face is smooth, no defects Ribbon shield at end of life.
5.4.2 Carriage Drive Belt Tension The carriage belt connects the carriage drive motor to the carriage. Incorrect carriage belt tension can cause uneven character width and spacing, poor bi-directional print alignment, stalling and premature belt wear. Tension is adjusted with the screw fastening the carriage belt idler pulley bracket to the right box flange. 1. Loosen the adjustment screw until the upper belt run can be pushed down against the lower belt run at the center of the printer with about 1 lb.
1. Use a spring gauge to measure the force required to raise the right end of the rear upper roller very slightly. It should measure 6 to 8 ounces (170 to 225 gm). 2. If necessary, adjust this force by loosening the roller spring cam screw on the right side plate and raising or lowering the cam. 3. Repeat steps 2 & 3 on the left end of the rear upper roller. 5.4.6 Auto Alignment Gate Ramp The gate ramp is properly adjusted if the screws that mount the roller springs to the gate have about 0.02” (0.
5.4.8 Front Document Roller Spring Force Gate travel must be properly adjusted (see 5.4.7) before roller spring force is adjusted 1. Raise the gate by pressing 9 4 7 FUNCT A. 2. Rotate a lower drive gear to manually feed an ½” wide strip of the thinnest paper used (usually a receipt copy) under the rightmost front upper roller segment. 3. Adjust the right side roller spring tensioning screw so there is a very light drag from the roller on the paper while rotating a lower drive gear.
5.5.3 Sensor PCB 1. Turn off power and disconnect the flex cable from the sensor PCB. 3. Remove the two nuts fastening the PCB to the input guide. 4. Raise the upper front roller and remove the PCB by pushing it to the rear. 5. Install the lower (thick) sensor insulator, the new PCB and the upper (thin) sensor insulator. 6. Push the PCB and insulators forward, fasten the nuts and reconnect the flex cable. 7.
5.5.8 Document Motor 1. Remove the cabinet (see 5.5.1). 2. Disconnect the motor from J2 on the Main PCB. 3. Loosen the 1/16” Allen screw that fastens the document drive pulley to the motor shaft 4. Remove the motor mounting screws. Remove the drive pulley through the motor clearance hole in the right box wall and remove the motor from the side plate. 5. Install the new motor (leads exiting from the bottom) through the side plate and onto the drive pulley and belt.
5.6 TROUBLESHOOTING 5.6.1 Basic Troubleshooting This procedure exercises everything in the printer except the interface to the host system. If any step is not successfully executed, refer to the corresponding troubleshooting section. 1. Turn on printer power. A) If nothing appears on the display, see 5.6.2. B) If < > BAD is displayed, replace the indicated component on the main PCB or the complete main PCB. C) If CARRIAGE FAULT is displayed, see 5.6.6. 2. Press 12345678 and then CLEAR.
5.6.4 Defective Sensor All sensors transmit infrared light and sense light reflected by a document, gap roller or cabinet. The sensors are automatically re-calibrated each time the printer powers on. First check that the flex cable is firmly seated in the connector on the Sensor PCB. Press 9 0 FUNCT to run diagnostics and display “SENSORS” and the letters LFBMRCE.
5.6.7 No Print or Light Print If there is no printhead noise when the carriage traverses a document: 1. Check that the printhead is plugged into the carriage flex cables. 2. Check that the flex cables are plugged into the main PCB J3 and J4. 3. Replace timer U13 or MOSFET Q7 on the main PCB. 4. Repair or replace the main PCB with a bad driver circuit. If there is printhead noise but there is no print or light print: 1. Correctly install the ribbon cartridge (see 3.1) or replace it if worn out. 2.
5.6.9 Missing Dots If a single row of dots is missing: 1. Refer to the printwire pinouts on the main PCB schematic. Pin 4 prints the uppermost dots of uppercase characters, pins 20 through 23 print lower case descenders (g,j,p,q and y) and pin 24 prints underscores. Disconnect the flex cable from the main PCB and measure the resistance of the bad printwire through the cable. It should be approximately 12 ohms for a silver body printhead and 6 ohms for a black body printhead.
5.6.13 Diagnostic Flowchart Use this flow chart to assist in troubleshooting. Is the display on the printer blank? Yes No Do the keys on the keypad work? See 3.2 for functions and exercise keys Yes No Will the printer take a document when it is placed into the machine? Yes No Power switch is ON Power cord plugged in both ends Contrast knob adjusted (3.3) Power outlet is live Is the keypad locked? (3.5.
5.
Printer Diagram Cabinet Latch Cabinet Display Contrast Adjust Configuration Label Keypad/Display Ribbon Cartridge Carriage Printhead Carriage Lifter Ring Multisensor PCB Roller Input Guide Input Tray Document Edge Guide Serial Port B USB Port Power Switch Power Cord 44 Back to Table of Contents Serial Port A
PRINTER ASSY 73819-X CABINET 73817-X ELECTROMECH 73816-X MAIN PCB 72135-1 no USB 72135-2 w USB CARRIAGE DRIVE 73806-X PRINTHEAD 73812-1 DOCUMENT DRIVE 73810-X KEYPAD/DISPLAY 73815-X CARRIAGE 73802-1 BOX 73804-X CARR IDLER 73805-X LOWER DRIVE 73809-X KEYPAD 72133-1 RIBBON GUIDE 73801-1 REVERSER 73803-1 GATE 73807-X PLATEN 73808-X DP8 & DP9 ASSEMBLY TREE SHIPPING KIT 73818-X DWG. 75017 REV.
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