Diagnostic information 2-21
5056-XXX
976 - Unrecoverable Software Error in Network Port
Software error. Go to the “Options service check” on page 2-68, and refer to the network card option section.
978 - Bad Checksum While Programming Network Card
Software error.
979 - Flash Parts Failed While Programming Network Port
Reflash network port.
980 Face Up/Down Switching Error
980 Service
Switch Error
Check Area
B
Step Questions/actions Yes No
1 POR the machine into diagnostics mode. Perform the
output bin feed test on output bin 1. Can you hear the
FU/FD solenoid move during the feed test?
Check to see if
linkage from the
FU/FD solenoid
to the FU/FD
deflector is
broken. Repair or
replace the
face-up unit.
Go to step 2.
2
Is there continuity on the FU/FD deflector solenoid
between pins 1 and 2 on CN 4 on the CK2 daughter
board.
Go to step 3. Replace the
face-up unit.
3
Is CN 4 on CK2 properly connected? Go to step 4. Properly connect
the connectors.
4
Are CN 3, CN 4, CN 5 on the printer controller board
properly connected?
Go to step 5. Properly connect
the connectors.
5
Is fuse 1 on the printer controller board open? Replace the
printer controller
board and the
drum eraser
assembly.
Replace the
printer controller
board.
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