40
TROUBLESHOOTING(VCR)
Noise appears on the
playback screen.
Is noise diminished by tracking
adjustment.
Noise band is trembled up and
down?
Re-adjust PATH.
Is the height of CTL HEAD normal?
No dust?
Is there problem in CTL Input
circuit and amplifier.
YES
NO
NO
NO
Is there CTL pulse at IC501
pin#97?
Check IC501.
Noise appears on the screen even
though changing tape.
Re-adjust the height of AC HEAD.
Remove the dust.
Check C510,R545~R547
IC 501 pin #91, 92, 98.
NO
Re-adjust PATH.
B-1. Bad playback quality (1)
YES
YES
YES
YES
Noise appears on the Full
playback screen.
Are SW pulse and HA SW normal?
Recheck step B-1
(Bad playback quallty (1)).
Check HEAD AMP connector
and HEAD.
YES
YES
NO
NO
ENVE Wave at P502 pin #6?
Check VIDEO circuit.
Are there SW, HA SW pulse at
IC501 pin #16, 18?
Check PCB Pattern.
Check IC501.
B-2. Bad playback quality (2)
YES
NO
YES
Содержание DSI-9100
Страница 5: ...4 SCHEMATIC DIAGRAM ...
Страница 6: ...5 SCHEMATIC DIAGRAM ...
Страница 7: ...6 SCHEMATIC DIAGRAM ...
Страница 8: ...7 SCHEMATIC DIAGRAM ...
Страница 9: ...8 SCHEMATIC DIAGRAM MPEG STI5518 ...
Страница 10: ...9 SCHEMATIC DIAGRAM MPEG CIMAX ...
Страница 11: ...10 SCHEMATIC DIAGRAM MPEG MEMORY 27M ...
Страница 12: ...11 SCHEMATIC DIAGRAM MPEG VIDEO ...
Страница 13: ...12 SCHEMATIC DIAGRAM MPEG AUDIO ...
Страница 14: ...13 SCHEMATIC DIAGRAM MPEG POWER RS 232 VCR CON ...
Страница 15: ...1 Block Diagram 14 CIRCUIT INFORMATION MPEG ...
Страница 24: ...23 CIRCUIT INFORMATION MPEG EMI Interface Timing ...
Страница 59: ...58 PCB CIRCUIT BOARD 1 MAIN PCB Circuit Board ...
Страница 60: ...59 PCB CIRCUIT BOARD 2 MPEG PCB Circuit Board ...
Страница 61: ...60 INSTRUMENT DISASSEMBLY 1 PACKING ASS Y ...
Страница 62: ...61 INSTRUMENT DISASSEMBLY 2 FRONT PANEL ASSEMBLY 1 7H32D ...
Страница 63: ...62 INSTRUMENT DISASSEMBLY 2 4J32D ...
Страница 64: ...63 INSTRUMENT DISASSEMBLY 3 SET TOTAL DISASSEMBLY ...
Страница 76: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp ...