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23
TROUBLESHOOTING GUIDE
3-5) NO SOUND PLAYBACK
ICY01
VCR Y/C
LA71076AM
XS01
32KHz
Check
the crystal
Check
the voltage
ICS01
TIMER/
SYSCON
#65 #67
XS02
16MHz
#35
#36
#38
#39
#37
#34
RESET
Vcc(5V)
#98
#99
Vcc(5V)
Vcc(5V)
Check
the waveform
Check
the voltage
(5V)
C-ROT Pulse
PB L
Check
the crystal
#16 #17
Check
SCL/SDA signal
If REC Y/C no signal,
then change the ICY01.
2HEAD DRUM
#21
#54
#56/57
#87
HA Vcc
C Vcc
CCD Vcc
Y Vcc
#19
#15
#20
#18
Check
waveform(30Hz)
#61
#66
#82
#83/84
#94
#95
CTL
HEAD
CTL(+)
CTL(-)
Check
the waveform
(30Hz)
#99
#97
m
VH SW Pulse
REC H
HA SW Pulse
#85
Check
the crystal
XY01
3.58MHZ
#62
Appendix
Содержание DVQ-13H1FCN
Страница 7: ...6 CIRCUIT BLOCK DIAGRAM...
Страница 8: ...7 CIRCUIT BLOCK DIAGRAM...
Страница 14: ...13 SCHEMATIC DIAGRAM AUDIO VIDEO VERTICAL HORIZONTAL...
Страница 15: ...14 EXPLODED VIEW 1 DVQ 19H2FCN 4857246201 4851941600 4859813091 48A96220C1 SPTH C T0 5 DRN 9200 A48AGY13X...
Страница 16: ...15 EXPLODED VIEW 2 DVQ 19H1FC 48572462011 4851941600 4859813091 48A96220C1 SPTH C T0 5 DRN 9200 A48AGY13X...
Страница 18: ...17 EXPLODED VIEW 4 DVQ 13H1FC T025 ET T0 4 330 246 T1 6 A34KQV42X...
Страница 19: ...18 PRINTED CIRCUIT BOARD...
Страница 35: ...7 IC DESCRIPTION IC501 DCT814B LA76814B IC VIDEO PROCESSOR Appendix...
Страница 36: ...8 IC DESCRIPTION ICY01 LA71076M IC VCR Y C AUDIO PROCESSOR Appendix...