1
TROUBLE SHOOTING FLOW CHART
1. POWER CIRCUIT
When changing the parts which are broken first, remove the power plug from the socket and then discharge the voltage
across the terminals of C805. (Use an external K
§
Ù
resistance)
When check the primary circuit , use the oscilloscope isolated properly (Use the isolated transformer) and connect
GND to the primary GND, however it is not necessary to isolate the oscilloscope when check the secondary circuit.
A. CHECKING THE PRIMARY CIRCUIT.
No output Voltage.
NO
NO
NO
YES
Prepare the oscilloscope
connected the isolated
transformer
Check L801, L802
Check R803, D801
YES
YES
YES
YES
YES
YES
YES
YES
Check R804, R805,R806,
C806
Check F801 Fuse.
Is voltage applied to D801?
Is voltage applied to the
terminals of C805?
Is voltage applied to
Q801 base?
Is voltage output from pin 3
of IC801?
Check R809, R810, D804,
D805, C812, R811
Check the Secondary circuit
Check Q802
Appendix
Содержание DV-K813S Series
Страница 7: ...6 EXTERNAL VIEWS 2 REAR VIEWS FUNCTION MONO 2 SCART TYPE REAR VIEW HI FI 2 SCART TYPE REAR VIEW...
Страница 15: ...14 CIRCUIT DIAGRAM 1 POWER CIRCUIT DIAGRAM 230V ONLY...
Страница 16: ...15 CIRCUIT DIAGRAM 2 SYSCON CIRCUIT DIAGRAM...
Страница 17: ...16 CIRCUIT DIAGRAM 3 A V CIRCUIT DIAGRAM SECAM...
Страница 18: ...17 4 PIF CIRCUIT DIAGRAM CIRCUIT DIAGRAM...
Страница 19: ...18 CIRCUIT DIAGRAM 5 HIFI SW CIRCUIT DIAGRAM...
Страница 20: ...19 CIRCUIT DIAGRAM 6 SW CIRCUIT DIAGRAM...
Страница 25: ...24 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 1 PCB MAIN...
Страница 26: ...25 DISASSEMBLY 1 PACKING ASS Y...
Страница 27: ...26 DISASSEMBLY 2 FRONT PANEL ASSEMBLY DV K813S SERIES DV K823S SERIES...
Страница 28: ...27 DISASSEMBLY DV K873S SERIES DV K893S SERIES...
Страница 29: ...28 DISASSEMBLY DV K843S SERIES DV K863S SERIES...
Страница 30: ...29 DISASSEMBLY DV K9A3S SERIES...