26
TROUBLESHOOTING GUIDE
3-8) NO EXTERNAL VIDEO / AUDIO
ICY01
VCR Y/C
LA71076AM
XS01
32KHz
Check
the crystal
Check
the voltage
ICS01
TIMER/
SYSCON
#75
XS02
16MHz
#35
#36
#38
#39
#37
#34
RESET
Vcc(5V)
#98
#99
Vcc(5V)
Vcc(5V)
Check
the waveform
Check
the voltage
(5V)
INPUT SELCT
Check
the crystal
#55
Check
CTL signal
#35
AUDIO OUT
#87
HA Vcc
#12 #11
#72
#71
MDATA
MCLK
Check
MCL/MDA signal
#42
I501
CHROMA
DCT814B
#76
#42
#2
CVS OUT
#96
JP01
EXT INPUT
Check
the waveform
AUDIO IN
CVS
IN
Check
the voltage
(5V)
IF Vcc
If CVS/AUDIO no signals,
then change the ICY01.
TV:H, EXT:L
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...