Image - Ricoh FAX1120L Service Manual

TROUBLESHOOTING FLOW CHART
4.5.2 NO IMAGE
No image?
YES
Self test pattern
prints?
YES
Check connection to
computer or replace
controller
Self testing is
NO
possible via Tech
Mode?
Take out the cartridge
and prepare the tester for
electronic connection
Is the
OPC terminal of
machine is well-
connected to
Frame?
Does
the video data line to
LSU transit to High/Low
when printing?
The mirror in LSU might be
misplaced so the light path to
the OPC deviates
→ Repair or replace the LSU
or remove any defective
matters in the machine
4-6
NO
Re-test after replacing the
connector or Main board.
YES
NO
YES
NO
NO
YES
10 October, 2002
A on next
page
Repair or replace the
GND terminal
Check the path between
video controller, engine
board and HVPS. Repair
or replace the defective
component or board
H911T911.WMF