2-68 Service Manual
5056-XXX
Periodic dirt
White spots
Options service check
Service Tip: When you have a problem with any of the options installed in the options slots on the interconnect
board, switch the non-operating option to one of the other option slots to isolate the failure.
Serial port
Run the “Serial Wrap Test” on page 3-12.
Note: The Serial Wrap Test is designed to check the serial port hardware by using a wrap plug, P/N 1329048,
and invoking the Serial Post Diagnostic Test. The test helps isolate the printer from the serial cable and host
computer. The test provides failure information on the display for approximately three seconds. If the test
indicates a problem, replace the RIP board.
Flash Memory Option(s)
Run a copy of the test page, and check to see if the option you are checking is listed. The printer does not
recognize the option being installed if the option is not listed. Be sure the memory card assembly is installed
correctly and is not broken or damaged. If the Memory card assembly is correctly installed, not broken or
damaged, then run the “Flash Test” on page 3-16. If the test fails, replace the Flash card assembly. If the
problem continues, replace the RIP board.
DRAM Memory Option(s)
This service check is the same as the flash memory option service check with the following exception:
Run the “DRAM Test” on page 3-10 from the menu if the DRAM Memory card assembly is correctly installed
and not broken or damaged. If the test fails, replace the DRAM card assembly. If the problem continues, replace
the RIP board.
Hard Disk Option
Service Tip: The 5056-01x printers support one hard disk option. Be sure only one 3.2 GB or larger hard disk
option is installed. Be sure the hard disk and the hard disk board are correctly installed. Run the “Quick Disk
Possible cause Action
Oil coating fuser roller (OCR) Check for dirt or damage to the fuser rolls or the oil coating roller
(OCR).
Photoconductor drum Check for scratches on the surface, and replace if necessary.
Transfer belt unit Be sure the transfer belt is clean and not damaged. Replace parts as
necessary.
Possible cause Action
• LED printhead
• Photodeveloper
• Toner cartridge
Firmly install the photodeveloper and the toner cartridge into the printer.
Belt unit Check the transfer belt unit for scratches or nicks. Be sure there is no
toner buildup on the belt. Replace the belt unit if it is damaged.
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