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N
N
SAMSUNG Proprietary-Contents may change without notice
1-2
STH-N375 Trouble Shooting
1-2. Abnormal LCD Module, Vibrator & Speaker Operation
Y
N
Need to check
CN202-1
Need to check
U312 & neighbor part
N
Need to check
R125, 126
Y
Y
LCD Control
Signal OK?
Y
Y
BACKLIGHT=H
Y
VCC, ADD(2), DATA(0:7),
DISPLAY_CS, RESET
LCD Display Running
Send Command Back Light enable
Y
N
Need to check
R216 & U205
Y
LCD Display Running
Back lingt Running
Send Command Vibrator enable
Need to check
Q109, R130, R162, R163, R164
START
Y
Y
N
Need to check
U101_77,79
Y
LCD Display Running
Back lingt Running
Vibrator Running
Send Command Main Audio Receiver Path ON
Send Command Audio tone generator ON
1
VIBRATOR=H
Vibrator Run
OK?
SPK+,SPK- Signal
OK?
LED Back light
OK?
Y
N
Replace U101
Good
Speaker Output
OK?