27
TROUBLE SHOOTING FLOW CHART
1. POWER CIRCUIT
When changing the parts which are broken first, remove the power plug from the socket and then dis-
charge the voltage across the terminals of C806. (Use an external K
Ω
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
Prepare the oscilloscope
connected the isolated
Transformer.
Check L801.
Check M801 Power Module.
YES
YES
YES
YES
YES
Check F801 Fuse.
Is voltage applied to D801?
Is voltage applied to the
terminals of C806?
Check the Secondary circuit
Summary of Contents for DV4K611DZ-T
Page 46: ...45 CONNECTION DIAGRAM CIRCUIT DIAGRAM50 ...
Page 47: ...46 CIRCUIT DIAGRAM 1 POWER CIRCUIT DIAGRAM ...
Page 48: ...47 CIRCUIT DIAGRAM 2 SYSCON CIRCUIT DIAGRAM ...
Page 49: ...48 CIRCUIT DIAGRAM 3 A V CIRCUIT DIAGRAM ...
Page 50: ...49 CIRCUIT DIAGRAM 4 OSD CIRCUIT DIAGRAM ...
Page 51: ...50 CIRCUIT DIAGRAM 5 LOGIC CIRCUIT DIAGRAM ...
Page 52: ...51 CIRCUIT DIAGRAM 6 TERMINAL CIRCUIT DIAGRAM ...
Page 53: ...52 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 1 PCB MAIN ...
Page 54: ...2 PCB LOGIC ...
Page 55: ...54 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 3 PCB JACK ...
Page 56: ...55 DISASSEMBLY 1 PANEL FRONT ASS Y ...
Page 57: ...56 DISASSEMBLY 2 SET TOTAL ASS Y ...
Page 58: ...57 DISASSEMBLY 3 PACKING ASS Y ...
Page 71: ......