Craden Peripherals DP8 manual

CRADEN P E R I P H E R A L S C O R P O R A T I O N DP8 & DP9 DOCUMENT PRINTERS TECHNICAL MANUAL P/N 99090 REVISION 7 7/2007 7860 AIRPORT HIGHWAY, PENNSAUKEN, NJ 08109 (856) 488-0700 (856) 488-0925 FAX www.craden.com[...]

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 [...]

DP8 & DP9 Technical Manual Table of Contents 1.0 DP8 & DP9 DOCUMENT PRINTERS - FUNCTIONAL SPECIFICATIONS 1 2.0 INSTALLATION 2.1 INSTALLATION PROCEDURE 2 2.2 RESHIPMENT 3 3.0 OPERATION 3.1 RIBBON CARTRIDGE LOADING 3 3.2 KEYPAD OPERATION 4 3.3 DISPLAY OPERATION 4 3.4 DOCUMENT INSERTION 5 3.5 CONFIGURATION 5 3.5.1 Printer Parameters 6 3.5.2 Co[...]

3.13.7 Erratic Document Feed, Mispositioning or Overprinting 20 3.13.8 Rollers Run at Power-Up or After Document Ejected 20 3.13.9 Erratic Character Spacing or Carriage Hitting End Stops 20 3.13.10 Interface Inoperative 20 4.0 THEORY OF OPERATION 4.1 OVERVIEW 21 4.1.1 Carriage Drive Assembly 21 4.1.2 Document Drive Assembly 21 4.1.3 Switching Power[...]

5.6 TROUBLESHOOTING 5.6.1 Basic Troubleshooting Procedure 38 5.6.2 No Display 38 5.6.3 Defective Keypad 38 5.6.4 Defective Sensor 39 5.6.5 No Document Motion 39 5.6.6 No Carriage Motion 40 5.6.7 No Print or Light Print 40 5.6.8 Print Quality 40 5.6.9 Missing Dots 41 5.6.10 Erratic Document Feed or Mispositioning 41 5.6.11 Erratic Character Spacing [...]

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 Characters/inch C orrespondence Normal[...]

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 info[...]

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. 3.0 Operation 3.1 Ribbon Cartridge Loading Generic ribbons may cause printer malfunctions inclu[...]

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 [...]

3.4 Document Insertion 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 i[...]

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/[...]

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 doc ument. 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[...]

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 co[...]

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[...]

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 compatib[...]

ESC H 1B 48 End correspondence quality print ESC I n 1B 49 n Begin CQ (n=2) or normal (n=0) print ESC J n 1B 4A n Feed document up n/216 inches ESC K 1B 4B Begin 60 dot/inch graphics ESC L 1B 4C Begin 120 dot/inch graphics ESC R 1B 52 Set all tabs to default values (I) ESC S 1 1B 53 01 Begin subscript print ESC T 1B 54 End subscript print ESC W n 1[...]

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[...]

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 i[...]

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 ([...]

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. 0: Change just for one document V = 1: 5 lines/inch vertical spacing 0: 6 lines/inch vertical spacing H = 1: 12 characters/inch horizontal spacing if S=0 0: 10 charac[...]

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 ; E[...]

3.11.2 Installing Craden Drivers on WINDOWS NT, 2000 OR XP: If the printer is connecting via a USB interface, first install the USB drivers. 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 t[...]

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. A font size selection that displays characters at a smaller spacing will [...]

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 Description 2 Transmit Data (TD) From printer, transmits printer status. 3 Rec[...]

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 I[...]

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 key[...]

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 mic[...]

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 p[...]

Current Control Phase Control One Shot Comp. 3718 +38V A R4 Typ Phase I 0 current I 1 current V REF 0v 5v 0.4v 30v 30v ≈ 2.7 mSec 0 0 U20 - 15 R4 J2 - 1 J2 – 3 A B C D Fig. 4.1 Stepper Motor Drive Circuit B 0v 5v 0.4v 30v 30v ≈ 2.7 mSec 0 0 U20 - 15 R4 J2 - 1 J2 – 3 A B C D 0v 5v 0.0v 0.4v 0v 38v 38v ≈ 2.7 mSec 0 0 ≈ 5.5 mSec U20 - 15 R[...]

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. A[...]

Fig. 4.2 Printhead Drive Circuit D S D S D S C O I L U13 Timer U5 RCLK SRCLR Q Q 26 TYP. D23 TYP. Q8 Q 7 D6 Q5 Q4 U12 6 3 15 12 10 +38VDC D34 D35 FIRE NO CHOP FIRE EXT FIRE NO CHOP FIRE EXT U5 PIN 15 U13 PIN 3 Q7 SOURCE Q26 DRAIN COIL CURRENT 50V -- -- 70V -- 38V (dashed lines are for revision F and later boards) 26[...]

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 isopr[...]

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 printhe[...]

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 shoul[...]

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 t[...]

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. Open the cabinet, center the carriage and pull the lifter ring out and down to raise the carriage. Remove the ribbon ca[...]

5.4.1.1.1 Ribbon Shield Face Inspection A high percentage of printers sent to Craden for repair has 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 [...]

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 b[...]

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[...]

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. Ad[...]

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 insulat[...]

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 pl[...]

5.6 TROUBLESHOOTING 5.6.1 Basic Troubleshooting Procedure This procedure exercises everything in the printer ex cept 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 display[...]

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 [...]

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 circu[...]

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 p[...]

5.6.13 Diagnostic Flowchart Use this flow chart to assist in troubleshooting. Is the display on the printer blank? No Yes 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 Does the carriage move when printer should be printing? Open cabinet and [...]

5.7 RECOMMENDED SPARE PARTS Machine Population: 1 10 25 50 100 250 C l a s s A S p a r e s Q t y : 11235 1 0 C l a s s B S p a r e s Q t y : 11235 C l a s s C S p a r e s Q t y : 1123 DESCRIPTION PART# Class A: Ribbon Shield 73813-1 Printhead Assy 73812-1 Main PCB Assy 72135-1 (-2 if with USB option) Sensor PCB Assy 72132-1 Cleaning Kit 73297-8 Tec[...]

Printer Diagram Cabinet Keypad/Display Configuration Label Ribbon Cartridge Input Tray Document Edge Guide Printhead Carriage Input Guide Roller Carriage Lifter Ring Multisensor PCB Display Contrast Ad j ust Cabinet Latch Power Cord Serial Port B USB Port Serial Port A Power S witch 44[...]

DP8 & DP9 ASSEMBLY TREE DWG. 75017 REV. C All assemblies not ending in “X” are used both on DP8 and DP9 For all assemblies ending in “X”, X=1 for DP8 and X=2 for DP9 PRINTER ASSY 73819-X LOWER DRIVE 73809-X PLATEN 73808-X GATE 73807-X MAIN PCB 72135-1 no USB 72135-2 w USB DOCUMENT DRIVE 73810-X PRINTHEAD 73812-1 KEYPAD/DISPLAY 73815-X E[...]

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