Troubleshooting - Samsung SP42W4HPX/XEF Service Manual

5. Troubleshooting

5-1 Convergence Misaligned
Check CNZ02 out pin
(BV, BH, RV, RH, GV, GH)
Normal
Check FD101S,FD102S
on the sub board
Normal
Check the input/output
of ICZ103,ICZ104
on the sub board
Normal
Check the output from
ICZ03, ICZ04
on the sub board
Normal
Check DY
Samsung Electronics
Check the input
Normal
voltage of main
CN801 and sub CN801
Abnormal
Check connectors
Abnormal
Replace FD101S,FD102S
and check associate circuits
Abnormal
Check the circuits
related to ICZ103,ICZ104
Abnormal
Check the circuits related to
CNZ02,CNZ04,CNZ05
Abnormal
CNZ01
Troubleshooting
Check the output from
CG-MDL and FD855S,
FD802S on the SUB PCB
5-1