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.
Summary of Contents for DV-K88 series
Page 71: ...68 CIRCUIT DIAGRAMS 9 1 Connection Diagram SECTION 9 CIRCUIT DIAGRAM 68...
Page 72: ...69 CIRCUIT DIAGRAMS R819 5 1 9 2 Power Circuit Diagram...
Page 73: ...70 CIRCUIT DIAGRAMS 9 3 Syscon and Logic Circuit Diagram...
Page 74: ...71 CIRCUIT DIAGRAMS 9 4 AV SW Circuit Diagram...
Page 75: ...72 CIRCUIT DIAGRAMS 9 5 IF PDC Circuit Diagram TM...
Page 76: ...73 CIRCUIT DIAGRAMS 9 6 If Module Circuit Diagram A2...
Page 77: ...74 CIRCUIT DIAGRAMS 9 7 If Module Circuit Diagram Nicam...
Page 78: ...75 CIRCUIT DIAGRAMS 9 8 Hi Fi Pre Amp Circuit Diagram...
Page 79: ...76 CIRCUIT DIAGRAMS 9 9 Video Audio Circuit Diagram...
Page 80: ...77 CIRCUIT DIAGRAMS 9 10 Remocon Circuit Diagram...
Page 81: ...SECTION 10 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 78 P C B LOCATION 10 1 PCB Main...
Page 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...
Page 83: ...81 P C B LOCATION DV K88 S S Series...
Page 84: ...SECTION 11 DISASSEMBLY 83 DISASSEMBLY 11 1 Packing Ass y...
Page 85: ...84 DIAGRAMS DV K88 Series DV K82 Series DV K8K Series DV K86 Series 11 2 Front Panel Assembly...