13
TROUBLESHOOTING
Is +5V supplied at IC301 pin#91?
NO
NO
YES
YES
Is VIDEO SW Pulse input at IC301
pin#70?
Is REC signal output from IC301
pin#94,95,89,90?
LP MODE: 89,90 Pin
SP MODE: 94,95Pin
Check video HEAD and Connector.
Is signal input into IC301
pin# 48,50,52,54,56?
Check POWER circuit.
Check IC501 pin#18.
Record video signal poor.
Check EE MODE.
YES
Is luminance and color signal
output from IC301 pin#78?
Replace IC301.
NO
NO
YES
C. No recording
YES
Is IC301 pin#80 REC(H) HIGH?
Check IC501 pin#45.
NO
Содержание HV-DX300A
Страница 27: ...26 CIRCUIT DIAGRAM 1 POWER SUPPLY CIRCUIT DIAGRAM ...
Страница 28: ...27 CIRCUIT DIAGRAM 2 SERVO SYSCON CIRCUIT DIAGRAM ...
Страница 29: ...28 CIRCUIT DIAGRAM 3 VIDEO AUDIO CIRCUIT DIAGRAM ...
Страница 31: ...30 CIRCUIT DIAGRAM 5 PIF CIRCUIT DIAGRAM ...
Страница 32: ...31 CIRCUIT DIAGRAM 6 DVD CIRCUIT DIAGRAM ...
Страница 33: ...32 CIRCUIT DIAGRAM ...
Страница 34: ...33 CIRCUIT DIAGRAM ...
Страница 35: ...34 CIRCUIT DIAGRAM ...
Страница 36: ...35 CIRCUIT DIAGRAM ...
Страница 37: ...36 PCB CIRCUIT BOARD 1 1 VCR MAIN ...
Страница 38: ...37 PCB CIRCUIT BOARD 1 2 POWER ...
Страница 39: ...38 PCB CIRCUIT BOARD 1 3 DVD MAIN ...
Страница 44: ...42 INSTRUMENT DISASSEMBLY FIG 5 E MAIN PCB DISASSEMBLY Remove 2 screws then remove MAIN PCB Remove 3 screws ...
Страница 45: ...43 INSTRUMENT DISASSEMBLY F MAIN CHASSIS DISASSEMBLY FIG 6 Remove 4 screws then remove MAIN CHASSIS ...