No Image - Samsung SF-830 Service Manual

No Image

Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
No image?
YES
Self test
pattern prints?
YES
Check connection to
computer or replace
controller
Samsung Electronics
NO
Self testing
NO
is possible ?
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
LSU or remove any defective
matters in the machine
NO Retest after replacing the
connector or controller board
YES
Repair or replace the GND
NO
terminal
YES
Check the path between
Main board
NO
and HVPS. Repair or replace
the defective component
or board
YES
Troubleshooting
A on
next page
4-18