LG 2300N Diagram

NOTES) Warning

NOTES) Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) electricial shock.

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CIRCUIT DIAGRAM

1. POWER(SMPS) CIRCUIT DIAGRAM

IMPORTANT SAFETY NOTICE

WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTETED WITHOUT PERMISSION FROM THE ZENITH ELECTRONICS CORPORATION ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGI-

NAL CIRCUIT SPECIAL COMPONTS 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 IMPROVEMENT CHANGES INTO THE SET IS NOT DELAYED UNTILTHE NEW SERVICE LITERATURE IS PRINTED.

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.

IC903 PIN3 (AC110V, PLAY)

IC901 PIN3 (AC110V, STAND-BY)

IC902 is defective. 8V Power Line dead.

Q908, R928, D913 and Q909 are defective. 5V Power Line dead.

Q901 and Q902 are defective. FLD(+), FLD(-) are dead.

Q903, Q904 are defective. Power control is abnormal.

IC901 is defective. Power dead.

C927, R918, R922 and IC905 are defective. Power dead.