LG GB220 - Page 107

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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Slide on/off will
work properly
Is there the magnet
in the slide?
START
Replace U101
Place the magnet properly.
NO
YES
Voltage at pin 4
of U401 = 1.8V?
YES
NO
Voltage of VDD at U101
= 1.8V?
NO
Resolder U201
YES
Open slide
Voltage at pin 1 of U201
=1.8V
Resolder U201
NO
YES
Close slide.
Voltage at pin 1 of U201
= 0V
YES
Replace U201
NO
CHECKING FLOW