SAMSUNG SP-42W5HFR Service Manual Troubleshooting
Troubleshooting
Samsung Electronics 5-1
5. Troubleshooting
5-1 Convergence Misaligned
Normal
Check the
output voltage and waveform
of CN801, 803, CNZ02 on
the Convergence Board
Abnormal
Check CNZ01 out pin
(BZ, BH, RV, RH, GV, GH)
Normal
Check the associated
circuitry
Abnormal
Check Convergence
Moudle
1. Check FD802S, FD855S,
FD805S, FD806S On the
Power Board
2. Check the output
from H-BLK, V-BLK
the Main Board
5-2 No Sound
Troubleshooting
5-2 Samsung Electronics
Check if CN601
is inserted
normal
Check IC665
output pins 2, 4
Abnormal
Check IC665
input pin 5
normal
Check IC665
Mute pin 5
normal
Check IC665
output pins 7, 11
Abnormal
Insert CN601
(Connector)
normal
Check Speaker
Abnormal
Check FD854S on
the Power Board
Abnormal
Check the Mute circuit
normal
Abnormal
Check IC601
input pins 35, 38
Abnormal
Check CNS01
input pins 5, 9
Abnormal
Check IC703
input pins
Abnormal
Check CNS01
output pins 28
Check the Control
normal
Check the Control
normal
Check the Sound Module
circuit
normal
Check IC703
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