Diagnostic information 2-35
5021-0XX
904—Black developer clutch service check
Step Questions / actions Yes No
1 Turn printer off and remove
right cover. See “Right
cover removal” on
page 4-22. Is developer
clutch cable properly
connected?
Go to step 2. Properly connect
cable. Go to step
5.
2 Is developer clutch cable
damaged?
Replace
developer drive
assembly. See
“Developer
drive assembly
removal” on
page 4-32.
Go to step 3.
3 Disconnect clutch cable.
On clutch side, measure
resistance between two
outer pins. Is resistance
between 139 and 171
ohms?
Go to step 4. Replace
developer drive
assembly. See
“Developer
drive assembly
removal” on
page 4-32.
4 Remove I/O board shield.
See “I/O board removal”
on page 4-70 for steps to
remove I/O board shield.
Disconnect cable from
DCN10 on I/O board.
Check cable continuity from
DCN10 pins 23 and 24 to
connector that attaches to
black developer clutch
cable. Ensure that pins are
not shorted. Is cable okay?
Replace I/O
board. See“I/O
board removal”
on page 4-70.
Go to step 5.
Replace cable.
Go to step 5.
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