Samsung DVD-SR150M, Service Manual, Page: 59 / 120

Trouble Shooting
Samsung Electronics 4-37
Refer to wave pattern image of Fig. 4-25
Refer to wave pattern image of Fig. 4-26
Refer to wave pattern image of Fig. 4-25
Tuner Video Out Abnormal
Tuner input line signal
is OK? (Jack PCB)
Tuner line connect TV directly
No
Yes
Supplied
power fortuner is OK?
Pin 1 : 5V
Pin 3 : 5V
Pin 5 : 30V
Pin 12 : 3.3V
Refer to AV3 Video line error
Check SMPS (AL5.8V and 33V)
No
Yes
I2C signal Pin 27,28
of tuner is OK?
Check between pin 11, 12 of
tuner and FIC1.
No
Yes
Video output
signal of Tuner is OK?
(jack PCB)
Replace TM (tuner) block.
No
Yes