Samsung CLX-9252 Series Service Manual page 455

7. Troubles shooting
7.5.3 FDI device problem
● Symptom
FDI device does not work.
● Possible cause
1. FDI interface card is defective.
2. Main board is defective.
● Troubleshooting method :
1. Replace the FDI interface card. Check its operation n again.
2. Replace the main board.
7-1 58
Service Manual
SAMSUNG ELECTRONICS