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TROUBLESHOOTING GUIDE
3.1 NO SOUND
Check audio output signal of I601 #24 #25
e
X701
32.768KHz
f
Check
Vcc of the sound AMP
SOUND
#1
12V
C602
L sound in
#4
C603
TDA7267A
Check
audio signal in
: R, SOUND CHECK
TUNER
#29 #30
I701
RESET
MICOM
#38
SDA
#27
SCL
#28
#10
#11
Check
Check
the crystal
the crystal
the crystal
X601 18.432MHz
#51 #52
I603
MSP3435G
#8
#7
Check
SDA SCL
FROM
The SDA/SCL
I701
Check
audio signal out
#2
C605
speaker
L:Mute / H:Normal
I601
#3
C604
Q601
SF101
SAW FILTER
#5
SDA
FROM
#11
I701
SCL
#12
I101
TO MSP
SOUND IC.
#46
Check
The video signal
Check
the SIF INPUT
#47 #24
R.OUT
#25
#20
L.OUT
Check
The reset
Check
Vcc of the sound AMP
SOUND
12V
Check
L sound in
Micom #40
Check
audio signal in
Audio MUTE
H:Mute L:Normal
10
NG : Go to the figure e
OK : Go to the figure f
Check
IF AGC voltage
#6
#3
Check
the sound signal out
Check
audio signal out
#1
C602
#2
C608
#4
I602
C606
TDA7267A
#3
C607
: L, SOUND CHECK
Appendix
Check
speaker
L:Mute / H:Normal
Micom #40
Audio MUTE
H:Mute L:Normal
Q601
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