Lexmark 5021-0XX User Manual
Page 157

Diagnostic information
2-79
5021-0XX
5
Turn printer off. Check
cable for continuity that
connects DCN16 pins 10,
11, 12, and 13 to OHP
sensor sensor. Also check
for shorted pins. Is cable
okay?
Replace OHP
sensor. See
“Paper guide
(C) assembly
removal” on
page 4-47
.
Replace cable.
6
Touch positive lead to
DCN13 pin 9 to ensure 5
VDC is being supplied to
I/O board. Also check pin
11 for 5 VDC. Is 5 VDC
present?
Replace I/O
board. See
Go to step 7.
7
Check cable continuity
between LVPS ACN1 and I/
O board DCN13. Also
check for shorted pins. Is
cable okay?
Replace LVPS.
See
voltage power
supply (LVPS)
with cage
removal” on
page 4-60
.
Replace cable.
Step
Questions / actions
Yes
No
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