Check connection to
computer or replace
controller
Take out the cartridge
and prepare the tester
for electronic connection
Repair or replace the GND
terminal
Check the path between
Main board
and HVPS. Repair or replace
the defective component
or board
The mirror in LSU might be
misplaced so the light path to the
OPC deviates ->Repair or replace
LSU or remove any defective
matters in the machine
Self test
pattern prints?
No image?
Self testing
is possible ?
Is the OPC
terminal of machine
is well-connected
to Frame?
Does the
video data line to
LSU transit to High/Low
when printing?
Retest after replacing the
connector or controller board
A on
next page
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
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