DV-SP406
CIRCUIT DIAGRAMS-1
POWER (SMPS) CIRCUIT DIAGRAM
A
1
2
3
4
5
BCDEFGH
No Power
D105~D108 is Defective
14VA No Power
D125 is Defective
5.6VA No Power
D123 is Defective
3.3VA No Power
D121 or D122 are Defective
Switching Error
IC101is Defective
Switching Error
IC102,IC103 are Defective
No Power
FR101 is Defective
12V No Power
Q123 is Defective
5.0V No Power
Q126 is Defective
3.3V No Power
Q121 is Defective
WHEN SERVICING THIS CHASSIS, UNDER NO CIR-
CUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG CORPORATION. ALL COMPONENTS
SHOULD BE REPLACED ONLY WITH TYPES IDENTI-
CAL TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL
COMPONENTS ARE SHADED ON THE SCHEMATIC
FOR EASY IDENTIFICATION. THIS CIRCUIT DIAGRAM
MAY OCCASIONALLY DIFFER FROM THE ACTUAL
CIRCUIT USED. THIS WAY, IMPLEMENTATION OF THE
LATEST SAFETY AND PERFORMANCE IMPROVE-
MENT CHANGES INTO THE SET IS NOT DELAYED
UNTIL THE NEW SERVICE LITERATURE IS PRINTED.
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter dur-
ing Play mode.
IMPORTANT SAFETY NOTE :
To Next Page
Loading...
Need help?
General
