Lexmark 5021-0XX User Manual
Page 144
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2-66
Service Manual
5021-0XX
5
Reconnect DCN16 and
disconnect cable from
DCN13. On cable, check
for 5 VDC from pin 9 to
ground (you can touch
negative lead of voltmeter
to metal bracket that holds
I/O board to obtain ground.)
Is voltage present and
correct?
LVPS is
providing 5 VDC
to I/O board.
Replace faulty
I/O board. See
“I/O board
removal” on
page 4-70
Replace LVPS.
See
voltage power
supply (LVPS)
with cage
removal” on
page 4-60
Step
Questions / actions
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