Lexmark C510 Service Manual page 133

Step Questions / actions
5 Disconnect cable from
erase lamp and DCN15.
Check DCN15 pin 11 to
erase lamp cable
connector pin 1 and
DCN15 pin 12 to erase
lamp cable connector pin 3
for continuity. Check for
shorted pins on both sides
of cable. Is cable okay?
6 Retest printer. Does error
clear?
Yes
Replace I/O
board. See "I/O
board removal"
on page 4-70.
Go to step 6.
Problem solved.
Diagnostic information
5021-0XX
No
Replace cable.
Retest printer. If
error clears,
problem solved,
otherwise go to
step 6.
Replace engine
controller board.
See "Engine
controller
board removal"
on page 4-55.
2-55