42
FLOW CHART
NO
Is the signal from heads
fed to pin 1 and pin 3
(LP mode) or pin 5 and
pin 7 (SP mode) of P402?
Check ON/OFF 5V
Check REC(H)
Is ON/OFF 5V from pin 76
of IC301 supplied to pin
13 of IC401 at 5 volts?
YES
Is REC(H) from pin 19
of IC301 supplied to pin 11
of IC401 at zero volt?
Check VIDEO circuit
YES
YES
NO
Check H.A SW
Is H.A SW from 16 of IC501
supplied to pin 3 of IC401?
YES
NO
Check video SW
Is video SW from pin 18 of
IC501 supplied to pin
4 of IC401?
YES
YES
NO
Check drum and
deck mechanism
* IC401 : LA70011
NO
NO
Check TRICK(H)
Is TRICK(H) from pin 21
of IC301 supplied to D302
at zero volt?
YES
NO
Change IC401
Is the signal from pin 1 and pin
3 (LP mode) or pin 5 and pin 7
(SP mode) of P402 fed to pin 7
of IC401?
YES
NO
Check PB EQ
* •REC(H)
: "HIGH" in the record mode
:
"LOW" in the EE and PB mode.
*
•H.A SW
: "LOW" in the SP mode
:
"HIGH" in the LP mode.
*
•TRICK(H) : "HIGH" in the trick play
:
"LOW" except trick play.
Is the signal from pin 7
of IC401 fed to C352?
B. TROUBLESHOOTING OF PREAMP IN THE PLAYBACK MODE.
Summary of Contents for DV-K82 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...
