Circuit Diagrams; Power(Smps) Circuit Diagram - Zenith DVB352 Series Service Manual

CIRCUIT DIAGRAMS

1. POWER(SMPS) CIRCUIT DIAGRAM

Power Dead.
IC101 is defective.
NOTES) Warning NOTES : Symbol denotes AC ground.
NOTES) Parts that are shaded are critical
NOTES) With respect to risk of fire or
Symbol denotes DC chassis ground.
NOTES) electricial shock.
VF(+) Power Dead.
F102 is defective.
39
8V Power Dead.
IC105 is defective.
3-29
IMPORTANT SAFETY NOTICE NAL CIRCUIT. SPECIAL COMPONENTS ARE SHADED
ON THE SCHEMATIC FOR EASY IDENTIFICATION.
WHEN SERVICING THIS CHASSIS, UNDER NO CIR-
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF-
CUMSTANCES SHOULD THE ORIGINAL DESIGN BE
FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
MODIFIED OR ALTERED WITHOUT PERMISSION
IMPLEMENTATION OF THE LATEST SAFETY AND
FROM THE ZENITH ELECTRONICS CORPORATION.
PERFORMANCE IMPROVEMENT CHANGES INTO
ALL COMPONENTS SHOULD BE REPLACED ONLY
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
WITH TYPES IDENTICAL TO THOSE IN THE ORIGI-
LITERATURE IS PRINTED.
VF(-) Power Dead.
ZD101 is defective.
12V Power Dead.
IC103 is defective.
3-30
NOTE :
1. Shaded( ) parts are critical for safety. Replace only
with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
3.3V Power Dead.
IC106 is defective.
5V Power Dead.
Q107 is defective.
SR15857A
DM7912N