Service manual

-50-
TROUBLESHOOTING GUIDE
3-4) NO COLOR PLAYBACK
ICY01
VCR Y/C
LA71076AM
XS01
32KHz
Check
the crystal
Check
the voltage
ICS01
TIMER/
SYSCON
#2
0
#1
8
XS02
16MHz
#3 5
#3
6
#3
8
#3
9
#3
7
#3
4
RESET
Vcc(5V)
#9 8
#9
9
Vcc(5V)
Vcc(5V)
Check
the waveform
Check
the voltage
(5V)
Check
the crystal
#1
1
Check
CTL signal
I501
CHROMA
LA76845
#4 2
#3
5
If CVS no signal,
then change the ICY01.
CVS
#21
#5
4
#56/57
#8
7
HA Vcc
C Vcc
CCD Vcc
Y Vcc
#1
2
#1 1
#7 2#7 1
#1
6
MDATA
MCLK
Check
MCL/MDA signal
#4
0
Caption
CVS
R OUT
G OUT
B OUT
See the 2-4) TV NO
COLOR
#2
1
#2
0
#1
9
XY01
#6
6
#6 7
3.58MHz
Check
the crystal
Check
the waveform
#1 3
#1
4
#1
5
#1
6
#15
#70
REC H
VH SW Pulse
VH SW Pulse
C-ROT Pulse
PB L
#5
6
#4 9
#46
Appendix