19
TROUBLESHOOTING GUIDE
2-2) NO SOUND
Check the waveform of I501 #1
NG : GO to the figure
c
OK : GO to the figure
d
Check
Voltage
c
U102
TUNER
ICS01
TIMER/SYSCON
33V
5V
#65
#67
MDATA
MCLK
Check
Signal
I501
Z101
SAW FILT
IF OUT
#5
#6
#10
#10
AFT
#8
Check
IF Vcc(5V)
#71
#72
SCLK
SDATA
#12
#11
Check
Signal
Check
AGC Voltage
#3
#54
#52
#35
#36
#38
#39
Check
the X-TAL
XS02
XCS01
#37
#34
Check
Reset
VCC
d
CC602
Check
Voltage
Check
AUDIO Signal
#4
I601
TDA7267A
Check
AUDIO OUT
C605
Check
FM filter
circuit
#9
Check
SIF Signal
If SIF no signal,
then change I501
#1
SOUND
12V
R604
C604
#3
#2
Check
Earphone
ICS01 #25
SOUND MUTE
H:Mute,L:Normal
QC601
C606
3W
8 OHM
Check
Mute
Insert:
No Sound
Содержание DVQ-13H1FC
Страница 7: ...6 BLOCK DIAGRAM ...
Страница 8: ...7 BLOCK DIAGRAM PH01 ...
Страница 15: ...14 IC DESCRIPTION IC501 DCT814B LA76814B IC VIDEO PROCESSOR ...
Страница 16: ...15 IC DESCRIPTION ICY01 LA71550M IC VCR Y C AUDIO PROCESSOR ...
Страница 45: ...44 EXPLODED VIEW 1 DVQ 19H2FC ...
Страница 46: ...45 EXPLODED VIEW 2 DVQ 19H1FC ...
Страница 47: ...46 EXPLODED VIEW 3 DVQ 13H2FC ...
Страница 48: ...47 EXPLODED VIEW 4 DVQ 13H1FC ...