38
FLOW CHART
NO
Check IC301
NO
Check IC201
NO
No sound in the playback
mode after recording
Check Hi-Fi,
A/V select circuit
Check SYSCON
Is signal input into pin
73 of IC301?
YES
Is 5V applied to pin 76
of IC301 and is 5.8V
applied to pin 2 of T201?
Clean HEAD
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
Is clock and data applied
to pin 63, 64 of IC301?
Check SYSCON
Is the voltage above 4V
at pin 80 of IC301?
NO
Check R204, R205, C209
Change IC301
Is signal input into
pin 79 of IC301?
NO
Is the voltage from 0.7V
to 3.0V at pin 5 of IC301?
AC signal is put on the DC
voltage at pin 5 of IC301
Check AC Head
Does pin 6 of T201
oscillate?
NO
YES
YES
YES
YES
YES
Check IC301
Check R212, R213,
C211, T201
Check Q205
AC signal put on 70KHz
at base of Q201
NO
Is the voltage from 0.7
to 0.8 at pin 6 of IC301?
Is the voltage higher than
3.0V at collector of Q205?
NO
B. TROUBLESHOOTING OF REC MODE.
Содержание DV-K82 series
Страница 71: ...68 CIRCUIT DIAGRAMS 9 1 Connection Diagram SECTION 9 CIRCUIT DIAGRAM 68...
Страница 72: ...69 CIRCUIT DIAGRAMS R819 5 1 9 2 Power Circuit Diagram...
Страница 73: ...70 CIRCUIT DIAGRAMS 9 3 Syscon and Logic Circuit Diagram...
Страница 74: ...71 CIRCUIT DIAGRAMS 9 4 AV SW Circuit Diagram...
Страница 75: ...72 CIRCUIT DIAGRAMS 9 5 IF PDC Circuit Diagram TM...
Страница 76: ...73 CIRCUIT DIAGRAMS 9 6 If Module Circuit Diagram A2...
Страница 77: ...74 CIRCUIT DIAGRAMS 9 7 If Module Circuit Diagram Nicam...
Страница 78: ...75 CIRCUIT DIAGRAMS 9 8 Hi Fi Pre Amp Circuit Diagram...
Страница 79: ...76 CIRCUIT DIAGRAMS 9 9 Video Audio Circuit Diagram...
Страница 80: ...77 CIRCUIT DIAGRAMS 9 10 Remocon Circuit Diagram...
Страница 81: ...SECTION 10 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 78 P C B LOCATION 10 1 PCB Main...
Страница 82: ...80 P C B LOCATION 10 3 PCB Logic DV K8K S S Series DV K86 S S Series DV K82 S S Series...
Страница 83: ...81 P C B LOCATION DV K88 S S Series...
Страница 84: ...SECTION 11 DISASSEMBLY 83 DISASSEMBLY 11 1 Packing Ass y...
Страница 85: ...84 DIAGRAMS DV K88 Series DV K82 Series DV K8K Series DV K86 Series 11 2 Front Panel Assembly...