XOCECO LC23K6, Service Manual

Page: 21 / 44

1
Troubleshooting guide
1. No raster
Turn-on power supply, check
if the red indicator is light in
the STANDBY?
Check PIN6-8(24V output) of
the power supply board X903
Check if it’s melted of FUSE
in the power supply board?
Replacing power supply board
Check the indicator in
turn-on condition
Check if the indicator is flicker
in the sensor control normal
condition?
Check if the PIN12 of P29 is
high-level?
Check if the PIN26-30 of P4 is
high-level?
Check if it’s melted of F3?
Replacing CPU board
yes
no
no
no
Non-change color
blue
no
no
no
yes
yes
no