A SERVICE OF

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2-58 Service Manual
5021-0XX
918HVPS connection service check
Step Questions / actions Yes No
1 Turn printer off and remove
engine controller board
shield. See Engine
controller board removal
on page 4-55 for steps to
remove shield. Is cable
properly connected to
engine controller board
HVCN connector?
Go to step 2. Properly connect
cable. Retest
printer. If error
clears, problem
solved,
otherwise go to
step 2.
2 Turn printer off and remove
items to expose HVPS.
See High voltage power
supply (HVPS) removal
on page 4-59 for steps.
Check for continuity and
pin shorts of cable that
connects engine controller
board HVCN and HVPS
CN1. Is cable okay?
Replace HVPS.
See High
voltage power
supply (HVPS)
removal on
page 4-59.
Retest printer. If
error clears,
problem solved,
otherwise turn
printer off and
replace engine
controller board.
See Engine
controller
board removal
on page 4-55.
Replace cable.
Retest printer. If
error clears,
problem solved,
otherwise turn
printer off and
replace engine
controller board.
See Engine
controller
board removal
on page 4-55.