Low voltage power supply (lvps) service check, 996—low voltage power supply (lvps) service check, 996—low voltage power supply (lvps) – Lexmark 5021-0XX User Manual
Page 152
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2-74
Service Manual
5021-0XX
996—Low voltage power supply (LVPS) service check
Step
Questions / actions
Yes
No
1
Check cable for continuity
between engine controller
board connector LVCN and
HVPS ACN5 connector.
Check cable for continuity
between I/O board DCN21
and HVPS ACN5
connector. Also check for
shorted pins. Is cable
okay?
Go to step 2.
Replace cable.
2
Replace LVPS. See
voltage power supply
(LVPS) with cage
removal” on page 4-60
.
Does problem persist?
Go to step 3.
Problem solved.
3
Replace engine controller
board. See
controller board removal”
on page 4-55
. Does
problem persist?
Replace I/O
board. See
Problem solved.
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