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Service Guide OJ2010
Chapter 4 Failure and Repair Analysis
RAP 08: Print Quality Service Check
1. Check the print cartridges. Replace if necessary.
2. Check the installation of the printhead carrier assembly.
Check the connections of the printhead cables to the system board.
Check the parts listed below for wear or damage. Replace if necessary.
Print Cartridge Latch
Latch Spring
Carrier
3. Check the system board, printhead cable, and rubber backer.
Print the Test Page. Refer to Section 4.8 of this Service Handbook.
Look for a break in the diagonal line of the test pattern.
A broken line indicates that one or more print nozzles are not working.
Run the test again to verify the failure.
If there are even breaks in the diagonal line similar to the pattern shown in the diagram, replace the
system board.
If there is a single break or random breaks in the diagonal line, check the items in the order listed below.
A. Check the gold-plated contacts, on the end of the cable that connect to the carrier, for dirt and wear.
Use only a clean, dry cloth to clean the contacts.
Also check the cable for damage.
You may need to remove the cable from the carrier to inspect it.
B. A worn rubber backer results in poor contact between the printhead cable and the print cartridge.
Check the rubber backer for wear.
Replace the rubber backer, if necessary.
4. Check the Maintenance Station