Power On Trouble; Only For Training And Service Purposes - LG KP235 Service Manual

4. TROUBLE SHOOTING

4.4 Power On Trouble

TEST POINT
2V8_VMEM
2V5_VMIC
VABB
2V75_VVCXO
CIRCUIT
R100
2.2K
C101
1V8_VCORE
0.1uF
C109 C110
0.1u 22p
C11
VEXT01
R13
VMEM
G17
VABB
U11
VCORE
P16
VMIC
F16
VVCXO
R14
VSIM
A11
DATA0
D9
DATA1
LGE Internal Use Only
2V85_VSIM
2V8_VEXT
Figure 4.4
BAT100
(Backup Batt. : 2V, 0.5mAh)
2V8_VMEM 1V8_VCORE 2V75_VVCXO
2V8_VEXT 2V75_VABB 2V5_VMIC
DATA00
DATA01
- 48 -
R314
POWERKEY
680
2V85_VSIM
C111 1u
C112 1u
C113 2.2u
C114 1u
C115 2.2u
C116 1u
C117 1u
Copyright © 2008 LG Electronics. Inc. All right reserved.
1V8_VRTC
1V8_VCORE
VBAT
KEY MATRIX
R300
10K
END KEY
SW300

Only for training and service purposes