Pwm Amp Part Check - LG FB163U Service Manual

7. PWM AMP PART CHECK

POWER AMP PART CHECK
PN102
3PIN + 13,14,15 PIN 28V.
Check input power IC700
34,29,26,21 PIN.
Check input power of IC700,
1,36,17,18,19 PIN +12V
Check PWM MODULATOR
input 4,6,14,16 PIN.
Check POWER IC 700 34,
29,27,20 PIN output.
Check output LINE COIL.
OK
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Only for training and service purposes
YES
YES
YES
YES
YES
YES
YES
NO
Refer to SMPS Troubleshooting.
NO
Check resistance power
IC700:R702,701,726,727,724.
NO
Replace the related parts.
3-27 LGE Internal Use Only