Daewoo DVQ-13H1FC Service Manual page 20

2-2) NO SOUND
Check the waveform of I501 #1
c
33V
Check
Reset
#65
SDATA
#34
VCC #37
#35
XCS01
Check
the X-TAL
d
R604
SOUND
12V
CC602
Check
Voltage
5V
U102
IF OUT
TUNER
Check
Signal
#67
#10
SCLK
ICS01
TIMER/SYSCON #71
#72
#36 #38 #39
XS02
Check
Voltage
#1
C605
TDA7267A
#4
Check
AUDIO Signal
NG : GO to the figure
OK : GO to the figure
Z101
SAW FILT
#5
AFT
#10
MCLK
#12
MDATA
#11
Check
Signal
#2
I601
Earphone
#3
C604
Check
Mute
19
TROUBLESHOOTING GUIDE
c
d
Check
IF Vcc(5V)
Check
#6 #8
AGC Voltage
#3
Check
#9
FM filter
I501
circuit
#54
#52
Check
SIF Signal
If SIF no signal,
then change I501
Check
AUDIO OUT
C606
8 OHM
Check
Insert:
No Sound
QC601
ICS01 #25
SOUND MUTE
H:Mute,L:Normal
3W