A SERVICE OF

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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 I/O
board removal
on page 4-70.
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 Low
voltage power
supply (LVPS)
with cage
removal on
page 4-60.
Replace cable.
Step Questions / actions Yes No