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hp designjet 500/800 series printers
» disassembly
  » disassembly instructions
» screw types
» Left Hand Cover
» Right Hand Cover
» Front Panel
» Window and Top Cover
» Media Deflectors
» Left End Roll-Feed
» Right End Roll-Feed
» Back Platen
» Media Sensor
» Formatter
» LAN Card
» Spittoon
» Electronics Module
» Power Supply
» Scan-Axis Motor
» Cutter Assembly
» Left Encoder Holder
» Cutter Bushing
» Cutter Guide Bracket
» Drive Roller Encoder Sensor
» Trailing Cable
» Ink Supply Station
» Interconnect PCA
» Service Station and Aerosol Fan
» Cutter Guide
» Print Platen
» Service Station Holder
» Interconnect Cable
» Ink Supply Tubes
» Vacuum Fan
» Pinch-Arm
» Pinch-Arm Mechanism
» Pinch-Arm Lever
» Pinch-Arm Sensor
» Fork Idler, Tensioner and Idler Pulley
» Encoder Strip
» Carriage Assembly
» Paper-Axis Motor
» Drive Roller
» Gear Assemblies
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» Drive Roller

WARNING: Switch off the printer and remove the power cable.

 


1. Remove the spindle.
  2. Remove the Left Hand Cover » Left Hand Cover.

3. Remove the Right Hand Cover » Right Hand Cover.


4. Remove the Left and Right Trims.

5. Remove the Top Cover and Window » Window and Top Cover.
  6. Remove the Front Panel Assembly » Front Panel.
  7. Remove all the Media Deflectors» Media Deflectors.
  8. Remove the Back Platen (make sure the Lever is in the UP position) » Back Platen.
  9. Remove the Media Sensor » Media Sensor.
  10. Remove the Spittoon » Spittoon .
  11. Remove the Cutter Assembly » Cutter Assembly .
  12. Remove the Cutter Guide Bracket » Cutter Guide Bracket .
  13. Remove the Drive Roller Encoder Sensor » Drive Roller Encoder Sensor.
  14. Remove the Ink Supply Station » Ink Supply Station.

15. Remove the Cutter Guide » Cutter Guide.

16. Disconnect the Pinch-Arm Sensor Cable from the Interconnect PCA.

17. Disconnect the Paper-Axis Motor Cables and the Vacuum Fan Cable from the Electronics Module.

18. Remove 1 screw (T-10) from the Grounding Strip.

19. Remove 1 screw (T-15) from the Right Back Trim and remove trim.

20. Remove 1 screw (T-15) from the Left Back Trim and remove trim.

21. Remove 4 screws (T-25) that secure the Top Part of the Printer to the Bottom Part from the Left Hand Side.

22. Remove 4 screws (T-25) that secure the Top Part of the Printer to the Bottom Part from the right hand side.

Make sure the Media Lever is in the UP Position and lift the complete Top Part of the Printer away from the Bottom Part.

NOTE: The Top Part of the Printer is very heavy so 2 people should perform this step.

24. Remove 1 screw (T-15) from the Axle Spring.



25. Remove the Axle Spring.

NOTE: Be very careful when removing the Axle Spring because you could damage the Encoder Disc.

26. Remove the Encoder Disc Cover.

27. Release the levers on both ends of the Drive Roller.

28. Lift Drive Roller out of the Printer.


NOTE: Make sure you take care when lifting the Drive Roller because the Encoder Disc could get damaged.

NOTE: After replacing the Drive Roller (or the Encoder Disc), make sure you perform the Factory Advance Calibration.
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