Only For Training And Service Purposes - LG MG295 Service Manual

4. TROUBLE SHOOTING
Checking Flow
START
Is there the magnet
in the Folder?
YES
Voltage at pin 1
of U400 = 2.8V?
YES
Open Folder.
Voltage at pin 1 of U400
=2.8V
YES
Close folder.
Voltage at pin 1 of U400
= 0V
YES
Folder on/off will
work properly
LGE Internal Use Only
NO
Place the magnet properly.
NO
Voltage of VEXT at U103
= 2.8V?
YES
Resolder U400
NO
Resolder U400
NO
Replace U400
- 78 -
NO
Replace U103
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Only for training and service purposes