HP designjet l65500 Manuale Di Servizio
Tr
ou
bles
hooting
Troubleshooting
209
1.
Unload the substrate and carefully clean the encoder disk. The scan beam must be set to the high/
loading position, the plastic cover removed, remove the cover protecting the drive motor, switch off
the printer, turn the shaft/coupling of the drive motor in order to rotate the drive roller).
2.
Restart the printer, and run the new calibration ‘encoder calibration’ (from service menu, 4.3.1).
3.
Redo the calibration, 4.3.4 Roller Calibration & 4.3.5 Check Roller Calib.
•
Unload the substrate and replace the encoder disk and encoder reader (support part Q6702-
60474 Drive Roller Encoder Disc and Encoder PCA).
•
Remove the drive roller motor and its motor mount (so the drive roller can turn freely), and
check the drive roller can turn easily; that the middle bearings are turning freely.
•
After the replacement, redo the calibration from service menu, entry 4.3.1.
•
Redo the calibration or check of the drive roller.
•
If the same error is displayed, collect the error file using the HP retriever tool, Unchecking ‘only
Service Page’, collecting the file ‘logs.tar.gz<dateandtimeofextract>’ and escalate the case to
HP regional support team, asking them to escalate the case to the division, attaching the
extracted file.
When error 3 is displayed the printer can still work without any problems, however not all the
improvements from the new firmware will work, such as the substrate advance variability reduction. The
analyzes of the traces will confirm if there is any issue. Do not replace the driver roller if there is no evident
failure of this part.
Code4: The variation of traction/tensions on the substrate is too high:
Perform/check in the following order, only move on to the next check when you are sure the error persists:
1.
Use only OMAS navigable substrate that conforms to the characteristics described in step 1 in sec-
tion A.
2.
Check that the pinch wheels are closed/down.
3.
Check Vacuum sensor tubes are correctly connected and perform from the diagnostic menu the ‘3.6
vacuum system test’.
4.
Perform the rear and front spindle test from the diagnostic mode (test 3.2 /3.3) with the spindle
installed, latches closed and no substrate loaded. If one of the test fails:
•
Grease the side plate gears (using oil from the cleaning kit)
•
Remove both spindles and perform the diagnostic test: ‘3.1 Spindle System Burning’.
•
Perform again the rear and front spindle test 3.2/3.3 with the spindle installed, latches closed
and no substrate loaded. If the test fails replace the media input or media output side plate,
depending on the failing test.
5.
Redo the calibration, 4.3.4 Roller Calibration & 4.3.5 Check Roller Calib.
•
Remove the drive roller motor and its motor mount (check that the drive roller can turn freely),
and check the drive roller can turn easily; that the middle bearings are turning freely.
•
Carefully clean the encoder disk (scan beam has to be set at high/loading position, plastic
cover removed, remove the cover protecting the drive motor, switch off the printer, turn the
shaft/coupling of the drive motor in order to rotate the drive roller).
•
If it is still failing: unload the substrate, replace the encoder disk and encoder reader (support
part Q6702-60474Drive Roller Encoder Disc and Encoder PCA).
•
After the replacement or cleaning, redo the calibration from service menu, entry 4.3.1. (no sub-
strate loaded)
•
Redo the calibration, 4.3.4 Roller Calibration & 4.3.5 Check Roller Calib.
If it still fails for the same error: collect the error file using the HP retriever tool, Unchecking
‘only Service Page’, collecting the file ‘logs.tar.gz<dateandtimeofextract>’ and escalate the
case to HP regional support team, asking them to escalate the case to the division, attaching
the extracted file.