Black developer clutch service check, 904—black developer clutch service check, 904—black developer clutch service – Lexmark 5021-0XX User Manual
Page 113

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
. 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
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
Go to step 5.
Replace cable.
Go to step 5.