46
FLOW CHART
Is Y-FM signal from pin 7 of
IC401 fed to pin 15 of IC301?
YES
To OSD circuit
Check PREAMP circuit
NO
NO
Check Q301, R301, R302
C306, C307, C308, L301
Is the luminance signal from pin
15 of IC301 fed to pin 25 of IC301
through pin 17 and pin 20 ?
YES
NO
Check Q302 and R309
Is the luminance signal from pin
25 fed to pin 26 of IC301
through Q302?
YES
NO
Change IC301
Is the luminance signal from
26 fed to pin 38 of IC301?
YES
NO
Check ON/OFF 5V
Is ON/OFF 5V supplied to pin 36
and pin 47 of IC301 at 5 volts?
YES
F. TROUBLESHOOTING OF LUMINANCE 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...