Lexmark 5021-0XX - Manual (Page 128)

2-50 Service Manual
5021-0XX
8 Disconnect cable from
DCN13 on I/O board.
Check the following on
disconnected cable
connector:
Pin 1 to pin 2—24VDC
Pin 9 to pin 12—5VDC
Are voltages present?
Replace I/O
board. See
“I/O
board removal”
on page 4-70
.
Go step 10.
Replace cable
that connects
ACN1 on LVPS
to DCN13 on I/O
board. Remove
RIP board cage
to gain access to
cable. See
“RIP
board cage
removal” on
page 4-57
. Go
to step 9.
9 Reassemble and retest
printer. Does error clear? Problem solved. Go to step 10.
10 Check cable that connects
engine controller board
connector I2CN to I/O
board connector DCN3 for
continuity and pin shorts. Is
cable okay? Replace engine
controller board.
See
“Engine
controller
board removal”
on page 4-55
.
Replace cable.
Step Questions / actions Yes No