LG RAT375 Service Manual

3-9
7. POWER AMP PART CHECK
POWER AMP PART CHECK
Refer to SMPS Troubleshooting
NO
Check
CN105 pin2: +12 V
pin14,15: 20 V
YES
YES
Check each IC603
pin27,26,32,35 input voltage
YES
Check each line resistor
output voltage
NO
Check each IC603
pin1,22,23,44:+12 V
input
Check IC603,
pin28,31,36,39 output
Replace the coil
NO
Check output
line coil
Check PWM Modulator input
each pin6,8,16,18
YES
YES
YES
YES
OK

LG RAT375 Specifications

General

Brand	LG
Model	RAT375
Category	Stereo System
Language	English