22
TROUBLESHOOTING
E. No NORMAL AUDIO playback in record/playback mode(Check in REC mode)
No Normal Audio playback in
record/playback mode
Are there Audio signal at IC251
pin#4~9?
Is there recording signal at
IC251 pin#21?
Check Input LINE1 JACK.
Check Input LINE2 JACK.
Check ICD03(DVD).
Check signal flow circuit.
YES
NO
NO
NO
Signal at IC251 pin#21 is transferred to
IC301 pin#13,15,17?
Collect signal at C222 is about
70Vp-p at 70KHz?
Check IC251.
YES
YES
Check Q203.
NO
Check P201 pin#2, 4, 8 and A/C
HEAD.
YES
REC (H) BASE voltage at Q206
is 5V?
Check IC501 pin#45.
NO
YES
Содержание DC-A84D1P
Страница 27: ...26 CIRCUIT DIAGRAM 1 POWER SUPPLY CIRCUIT DIAGRAM...
Страница 28: ...27 CIRCUIT DIAGRAM 2 SERVO SYSCON CIRCUIT DIAGRAM VCR AM REC COPY C dts T DVD...
Страница 29: ...28 CIRCUIT DIAGRAM 3 VIDEO AUDIO CIRCUIT DIAGRAM...
Страница 30: ...29 4 HiFi SW INPUT CIRCUIT DIAGRAM 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 43: ...42 INSTRUMENT DISASSEMBLY FIG 5 E MAIN PCB DISASSEMBLY Remove 2 screws then remove MAIN PCB Remove 2 screws...
Страница 44: ...43 INSTRUMENT DISASSEMBLY F MAIN CHASSIS DISASSEMBLY FIG 6 Remove 4 screws then remove MAIN...
Страница 45: ...44 INSTRUMENT DISASSEMBLY G Explode view...
Страница 57: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp...