LG MG230 Service Manual page 33

4. TROUBLE SHOOTING
10p
C515
39p
C520
0.1u
RX1900B
25
RX1900
26
RX1800B
27
RX1800 AD6548
28
RX900B U501
29
RX900 EUSY0280101 VCC_TXVCO
30
RX850B
31
RX850
32
GND
33
Check
point
C543
39p
LGE Internal Use Only
Graph 4-1
QP
QN
C522 C523
27p 39p
VLDO2
16
VLDO1
15
VBAT
14
VDD
13
12
TXOP_HI C531
11
TXOP_LO 27p
10
VLDO3
9
C536
0.1u
IP
IN
X500 NX3225DA(W-191-451)
4 3
1 2
26MHz
EXXY0018403
- 32 -
26M_DBB
C514
47p
2V8_VMEM
R515
AFC
1K
R516
0
C521
0.1u
C524
0.1u
C534
C532
0.1u 220n
S_DATA
S_EN
S_CLK
C540 C541 C542
27p 27p 27p
Copyright © 2007 LG Electronics. Inc. All right reserved.
Check
point
VBAT 2V75_VVCXO
C528 C529 C530
0.1u 0.1u 0.1u
Check
point
Only for training and service purposes