43
FLOW CHART
NO
Is the Y-FM signal from pin
18 of IC301 fed to pin 9
of IC401?
Check C315 and pattern
Check ON/OFF 5V
Is the down converted colour
signal from pin 14 of IC301
fed to pin 10 of IC401?
YES
Is ON/OFF 5V supplied to pin
13 of IC401 at 5 volts?
Change drum
YES
YES
NO
Check REC(H)
Is REC(H) supplied to pin 11
of IC401 at 5 volts?
YES
NO
Check TRICK(H)
Is TRICK(H) supplied to pin 1
of IC401 at zero volts?
YES
YES
NO
Check R304, C314
and PCB pattern
* IC401 : LA70011
NO
NO
Check IC401
Is the signal from pin 9 and pin
10 fed to pin 22 (SP mode) and
pin 17 (LP mode) of IC401?
C. TROUBLESHOOTING OF PREAMP CIRCUIT IN THE RECORD 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...