Servo Control System Failures; Media Axis (X Axis) Shutdown; Carriage Axis (Y Axis) Shutdown; Frequent Cartridge Failure - HP DesignJet 200 Service Manual

Servo Control System Failures

Media Axis (X Axis) Shutdown

In the case of a media axis shutdown, try one or more of the following corrective actions:
D Clear any binding in the media axis mechanics due to a media jam. (Do not pull the
media along the carriage axis. Doing so could break the media sensor flags.)
D Remove the two screws that attach the drive roller gear to the drive roller. This should
enable you to manually spin the drive roller. If it does not, the roller is probably jammed.
D Perform the servo/encoder service test to check for problems with the media axis motor
encoder and main PCA.

Carriage Axis (Y Axis) Shutdown

In the case of a carriage axis shutdown, try one or more of the following corrective actions:
D Clear any binding in the carriage axis mechanics due to a media jam.
D Turn the plotter off. This should enable you to manually move the carriage along the
carriage axis. Check for any areas where the carriage may be binding.
D Ensure that the double pulley, small drive belt, small belt tensioner, main belt, main idler,
and carriage bushings are in correct working order.
D Perform the servo/encoder service test to check for problems with the servo feedback and
motor drive systems.

Frequent Cartridge Failure

Remove Tape and Align Cartridges

One frequent cause of cartridge problems is that the user has forgotten to remove the tape
from new cartridges. Remove the tape and perform a cartridge alignment.

Damaged Encoder Strip

Another cause of apparent frequent cartridge failure may be a damaged encoder strip. If the
small slots on the strip are damaged, the plotter cannot position the carriage correctly during
cartridge checking. Try replacing the encoder strip.

Incompatibility between Carriage and Firmware

In combination, cartridge carriage C2847 60071 (carriage PCA C2847 60125) and plotter
firmware A.01.00 destroy the cartridges. Update the plotter firmware and replace the
cartridges. (Details D chapter 9 w Probl ms Corr t d by irmwar R l as A.01.01.)
8 12 Troubleshooting
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