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Craden DP8 Supplementary Manual

Printer cleaning ki
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Download this manual See also: Operator's Manual, Technical Manual
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. In similar fashion, clean the rear rollers. Make sure all rollers are dry and free of residue.
5.1.3 Sensor Cleaning
Clear sensor light paths of paper, paper dust and other obstructions if rollers continue to run
when no document is present or other sensor problems occur.
MultiSensor
F -
Cable
Front
Sensor
Must be
seated in
Senses
connector
document
properly
insertion
1. Insert the flexible nozzle tube of a compressed air can under the input guide and near each
of the document sensors. Clear each sensor area with a 5-second burst of air.
L - Left (Home) Sensor – synchronizes carriage motion
B -
M -
Back
Middle
Sensor
Sensor
Senses
Detects
document
skew
top edge
Input Guide
R -
Right
Sensor
Detects
skew
27

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Summary of Contents for Craden DP8

  • Page 1 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.

  • Page 2: Printhead Cleaning

    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.

  • Page 3: Electrical Adjustments

    EDGE SENSOR is set so the distance from the left document edge to the left edge of the first character printed by 95 FUNCT is 0.20" (5.1mm). This parameter is available on DP8 serial number 182057 and higher and DP9 serial number 293501 and higher.

  • Page 4: Mechanical Adjustments

    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.
  • Page 5 Rotate the shield until it is centered on the carriage. Do not let the shield tips slip behind the carriage. Move the carriage lifter ring up and in to lower the carriage. Close the cabinet turn the printer on and do a test print or transaction.
  • Page 6 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 five ribbon replacements.
  • Page 7 1. Move the carriage to the printer center and raise the carriage while holding the box down. 2. If both carriage shaft ends don’t touch the top of the slots in the box flanges, reposition the shaft by pushing the higher shaft end down while raising the lower shaft end.
  • Page 8 Looking into the document drive. Input tray removed for clarity. Gate in “up” position Ramp Adjustment Screw Ramp Arm Ramp View: Ramp arm from front of printer with input tray removed Roller Segments Gate fingers Move ramp this way to...

  • Page 9: Replacement Procedures

    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.

  • Page 10: Sensor Pcb

    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.

  • Page 11: Carriage Drive Belt

    8. Connect the motor to J2 on the Main PCB and replace the cabinet. 5.5.9 Printhead 1. If a black bodied printhead is to be installed in a DP8, run 9 0 FUNCT to display the firmware revision which MUST be C1 or greater. A DP8 with A or B series firmware MUST be upgraded to at least C1 before a black bodied printhead can be used.

  • Page 12: Troubleshooting

    5.6 TROUBLESHOOTING 5.6.1 Basic Troubleshooting Procedure 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.

  • Page 13: 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.

  • Page 14: Print Quality

    Ribbon is near end of life. Replace ribbon cartridge. Ribbon has too much ink. Generic ribbon installed Replace with Craden ribbon Ribbon fabric is folded or Replace ribbon cartridge. twisted. Ribbon installed incorrectly See page 3 for ribbon installation...
  • Page 15 5. Tighten the drive pulley set screw on the carriage motor shaft. 5.6.12 Interface Inoperative If the printer works in self test, but won't run from the interface: 1. Check that the I/O cable is correct for your application (see 3.11.3) 2.

  • Page 16: Diagnostic Flowchart

     Power outlet is live  Is the keypad locked? (3.5.3)  Press EJECT & CLEAR and try again  Insert paper, press Akey (see printer parameter, DOCUMENT INSERT, 3.5.1)  Check sensors (5.6.4)  Carriage Fault on display? Foam packing removed? ...

  • Page 17: Recommended Spare Parts

    73812-1 72135-1 (-2 if with USB option) 72132-1 73297-8 99090 53025 72133-1 72133-2 72137-1 72155-1 72142-1 The DP8 and DP9 use the same 72142-2 recommended spares except 73805-1 for the printhead cable, keypad, 73805-2 and carriage belt assys. 67351 73820-1...

This manual is also suitable for:

73297-8

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