LG EAX37802512, EBY37800211 Schematic

CIRCUIT DIAGRAMS

A B C D E F G H I J K L M N O P Q R ST

No Power
BD101,R101 is Defective

VFD No Power
D126 is Defective

13VA No Power
D122 is Defective

S/W Error
IC101,IC104 is Defective

Switching Error
IC102,IC103 are Defective

No Power
F101 is Defective

5V NoPower
IC152 are Defective

3.3V NoPower
IC153 are Defective

12V NoPower
IC151 are Defective

No Power
D102 is Defective

3.3VA No Power
D123 is Defective

12VA No Power
D121 is Defective

5.3VA No Power
D124 is Defective

12V NoPower
IC154 are 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.

3-65 3-66

7. POWER SUPPLY CIRCUIT DIAGRAM

A

1

2

3

4

5

6

7

8

9

10

11

12

B C D E F G H I J K L M N O P Q R ST

3-77 3-78