Service Manuals, User Guides, Schematic Diagrams or docs for : . Various DVD Power Supply Schematics v782nwk_DVD_VHS_Samsung
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CIRCUIT DIAGRAMS IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIR-
CUIT. SPECIAL COMPONENTS ARE SHADED ON THE NOTE :
SCHEMATIC FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF-
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
CUMSTANCES SHOULD THE ORIGINAL DESIGN BE
1. POWER(SMPS) CIRCUIT DIAGRAM MODIFIED OR ALTERED WITHOUT PERMISSION
FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
FROM THE LG ELECTRONICS CORPORATION. ALL PERFORMANCE IMPROVEMENT CHANGES INTO
COMPONENTS SHOULD BE REPLACED ONLY WITH THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIR- LITERATURE IS PRINTED.
No power.
BD101, R101 are defective.
12VA no power.
D110 is defective.
2.5V, 3.3V no power.
D111 is defective.
Switching Error.
IC101 is defective.
5.3VA no power.
33V no power.
D112 is defective.
D113 is defective.
No Power.
F101 is defective.
Switching Error.
IC103, 102 are defective.
NOTE) Warning
NOTES) Symbol denotes AC ground. NOTE) Parts that are shaded are critical
NOTES) Symbol denotes DC chassis ground. NOTE) With respect to risk of fire or
NOTE) electricial shock.
3-30 3-31
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