Touch-Pad Part Check; Pwm Modulation Part Check - LG FB163U Service Manual

5. TOUCH-PAD PART CHECK

TOUCH-PAD CHECK
YES
IC3A1
28PIN check 5V.
YES
Check
IC3A1 8Pin,9Pin,
IC100 97Pin :CLK,
96Pin :DATA
YES
OK

6. PWM MODULATION PART CHECK

PWM MODULATION
PART CHECK
YES
Check
PN102 10PIN 3.3V.
YES
Check IC702 PS9830 VDD
PIN power (3,10,22,29,39,47,
56,65,72,87,94)Check X701
2PIN 3.3V
YES
Check if X701
12.288MHz is working.
YES
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Only for training and service purposes
NO
PN3A2 1PIN 5V.
YES
OK
NO
Check resistance output of
line CLK :R316 DATA :R317
YES
OK
NO
Refer to SMPS
Troubleshooting.
Check the
NO
related part of
X701.
YES
OK
3-25
NO
Refer to SMPS
Troubleshooting.
NO
Replace the related part.
NO
Replace the related part.
LGE Internal Use Only