2-86 Service Manual
5021-0XX
6 Turn printer off. Check
cable for continuity that
connects DCN7 pins 7, 8,
and 9 to output tray full
sensor. Also check for
shorted pins. Is cable
okay?
Replace paper
exit assembly.
See “Paper exit
assembly
removal” on
page 4-49.
Replace cable.
7 Touch positive lead to
DCN13 pin 9 and pin 11 to
ensure 5 VDC is being
supplied to I/O board. Is 5
VDC present?
Replace I/O
board. See “I/O
board removal”
on page 4-70.
Go to step 8.
8 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
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