Samsung SCX-6545N - Page 246

Alignment & Troubleshooting
Service Manual
4-122
Samsung Electronics
Engine is warming up properly
but LCD does not display anything on.
Check +24V On OP PBA
O.K
Check the BLU Harness on OP PBA
O.K
Replace OP PBA
or
LCD
N.G
Check Connecting Harness between OP & MAIN PBA
O.K O.K
Check +24V On MAIN PBA
Replace OP PBA
Replace
MAIN PBA
or
SMPS
N.G
N.G
Connect Harness
No Display on LCD