LG B2000 Service Manual

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4 . TROUBLE SHOOTING
TEST POINT
CIRCUIT
Checking Flow
Voltage at
Pin5 of U702
Is 2.8V?
YES YES
NO NO
Regulator Circuit is OK
See next Page to check
VCTCXO
Level at
Pin3 of U702
Is high?
Replace U702
Change main board
VBAT
CLKON
C533
10u
IN
U702 MIC5255-85BM5
GNO
EN
OUT
BYP
1
2
3
4
C734
C534
RF2V85
5
10u
0.01u
(1608)
(1) Checking Regulator Circuit

LG B2000 Specifications

General

Brand	LG
Model	B2000
Category	Cell Phone
Language	English