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MX8550
START
Are all LEDs working ?
R115, R118, R120, R122
LED108, LED109, LED110, LED111
Is Q102 working ?
Touch key backlight w ill work properly
LG Electronics Inc.
Checking Flow
Checking Flow
YES
NO
YES
NO
YES
Check the soldering of each R and LEDS ,
or replace if not wor king
Replace Q 102
- 117/148
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