31
42PD7500
/
42PD7500A
(PW2)
TV Sound
[Tuner PWB Circuit]
Are waveforms at
pin 30,31 of
IN01(L,R)?
Is waveforms at
pin 2 of IN01
(SIF)?
NO
No
Is waveforms at
pin 22 of U101
(SIF)?
No
Check U101
Yes
Yes
Yes
Yes
Check PTV2 connector
or Video PWB
Check arpund
QN01,QN02
Is voltage at
("H")?
Check
around
IN01
Yes
How about base of
QK02?
No
No
Check
QK02,QK03
Yes
Check I001 of
Formatter PWB
No
Check
QK02,QK03
pin 22 of IN01
No sound of TV
Does voltage at pin 22
of IN02 change for Low to
High?
DTT Sound
[I/F B PWB Circuit]
No Sound of DTT
Check HDMI PWB
Are waveforms at
PHD1 connector?
(Pin26,27)
Check HDMI PWB
Are waveforms at
PL6 connector?
(Pin26,27)
Change I/F B board
Check DTT module board
Check connector wires(EBH)
I/F B board
No
Yes
Yes
OK
No
NG
Check Video PWB
[Pin29,31 of I201]
Summary of Contents for 42PD7500
Page 11: ...10 42PD7500 42PD7500A PW2 5A DTT DTT Block diagram ...
Page 44: ...43 42PD7500 42PD7500A PW2 1 2 3 4 5 6 6 1 2 3 4 5 D G F E C B A VIDEO board 1 PW2 ...
Page 45: ...44 42PD7500 42PD7500A PW2 1 2 3 4 5 6 6 1 2 3 4 5 D G F E C B A VIDEO board 2 PW2 ...
Page 46: ...45 42PD7500 42PD7500A PW2 1 2 3 4 5 6 6 1 2 3 4 5 D G F E C B A VIDEO board 3 PW2 ...
Page 47: ...46 42PD7500 42PD7500A PW2 1 2 3 4 5 6 6 1 2 3 4 5 D G F E C B A VIDEO board 4 PW2 ...
Page 48: ...47 42PD7500 42PD7500A PW2 1 2 3 4 5 6 6 1 2 3 4 5 D G F E C B A TUNER board PW2 ...
Page 49: ...48 42PD7500 42PD7500A PW2 1 2 3 4 5 6 6 1 2 3 4 5 D G F E C B A PWB assembly JOINT 1 PW2 ...
Page 50: ...49 42PD7500 42PD7500A PW2 1 2 3 4 5 6 6 1 2 3 4 5 D C B A G F E PWB assembly JOINT 2 PW2 ...
Page 51: ...50 42PD7500 42PD7500A PW2 1 2 3 4 5 6 6 1 2 3 4 5 D G F E C B A PWB assembly AUDIO PW2 ...
Page 52: ...51 42PD7500 42PD7500A PW2 1 2 3 4 5 6 6 1 2 3 4 5 D G F E C B A HDMI board PW2 ...
Page 54: ...SM007 PSU Circuit Sheet 1 53 42PD7500 42PD7500A PW2 ...
Page 55: ...SM007 PSU Circuit Sheet 2 54 42PD7500 42PD7500A PW2 ...
Page 56: ...SM007 PSU Circuit Sheet 3 55 42PD7500 42PD7500A PW2 ...
Page 57: ...SM007 PSU Circuit Sheet 4 56 42PD7500 42PD7500A PW2 ...
Page 58: ...SM007 PSU Circuit Sheet 5 57 42PD7500 42PD7500A PW2 ...
Page 66: ...SM007 PSU Board 65 42PD7500 42PD7500A PW2 ...
Page 67: ...66 42PD7500 42PD7500A PW2 11 Block diagram ...
Page 77: ...THE UPDATED PARTS LIST FOR THIS MODEL IS AVAILABLE ON ESTA 76 ...