Daewoo DVQ-13H1FC Service Manual page 28

3-3) NO PICTURE PLAYBACK
Check the waveform of ICY01 #27
j
Check
the voltage
Check
SCL/SDA signal
#16 #17
C Vcc #58
CCD Vcc #56
SW Vcc #39
Y Vcc #11
#4
Check
the voltage
(5V)
RESET #34
Vcc(5V) #37
Vcc(5V) #98
Vcc(5V) #99
#65 #67 #13
SDATA
SCLK
QV SYNC
#14
#19
ICY01
VCR Y/C
LA71550M
#1
#6 #9 #10
If PB RF no signal,
then change the IZ01.
Check
waveform
NG : GO to the figure
OK : GO to the figure k
ICS01
TIMER/
SYSCON
#18 #20 #6
Video Envelope
REC H
VH SW Pulse
Check
the waveform
(30Hz)
C-SYNC
#5
Check
the waveform
PB RF
#7
Check
the waveform
27
TROUBLESHOOTING GUIDE
j
Check
the crystal
#39
XS02
16MHz
#38
#35
XCS01
32KHz
#36
Check
the crystal
Check
voltage
#4 #11 #6
IZ01
#13 Vcc
PREAMP
LA70001
#19 #17 #16
Check
the voltage
(5V)
2HEAD DRUM