To Next Page

To Previous Page

3-29

Only for training and service purposes.

ELECTRICAL TROUBLESHOOTING GUIDE

5. POWER AMP PART CHECK

YES

POWER AMP PART CHECK

Refer to SMPS troubleshooting.

Check each line resistor output voltage.

Replace the coil.

Check IC701, IC702

Pin51, 52, 42, 43, 38, 39, 30, 31 input voltage.

Check PWM modulator input

IC701 pin4, 5/ IC702 pin4, 5, 10, 11.

Check IC701, IC702

pin28, 29, 36, 37, 44, 45, 52, 53.

Check CN201 pin1, 2: 12 V,

pin8, 9, 10: 48.5 V (35.5 V).

Check IC701, IC702

pin64: AMP_12V input.

Check output line coil.

Other manuals for LG OK75

Questions and Answers:

Need help?

Do you have a question about the LG OK75 and is the answer not in the manual?

General