LG EAX36706401, EBY31847301 Schematic

CIRCUIT DIAGRAMS

No Power
BD101, R101 is Defective

S/W Error
IC101 is Defective

Switching Error
IC102, IC103 are Defective

No Power
D102 is Defective

33VA No Power
D126 is Defective

No Power
F101 is Defective

3.8VA No Power
D127 is Defective

5V No Power
D125 is Defective

-28VA No Power
D122 is Defective

FD(+)FD(-) No Power
D121 is Defective

5V No Power
IC156 is Defective

5.3VA No Power
D128 is Defective

13.5VA No Power
D124 is Defective

12V No Power
IC155 is Defective

1. SMPS CIRCUIT DIAGRAM

IMPORTANT SAFETY NOTE :

WHEN SERVICING THIS CHASSIS, UNDER NO CIR­CUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LOEWE. ALL COMPONENTS SHOULD BE
REPLACED ONLY WITH TYPES IDENTICAL 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 IMPROVE­MENT 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 dur­ing Play mode.

3-39 3-40

2. POWER P.C.BOARD

(TOP VIEW) (BOTTOM VIEW)

3-75 3-76