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(3) Checking TX I/Q
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Re-download the Software
And calibrate
Check if there is
Any Major Difference
¨Refer to Graph4.3.4
Similar ?
Yes
No
Replace U503
TP2
TP1
U503
180
C535
39p
39p
C515
VCC_FE
VCC_REF
17
VCC_TXVCO
12
13
VDD
15
VLDO1
VLDO2
16
9
VLDO3
RX1800B
RX1900
26
25
RX1900B
RX850
32
31
RX850B
RX900
30
29
RX900B
SCLK
6
5
SDATA
7
SEN
11
TXOP_HI
TXOP_LO
10
18
VAFC_NC
VBAT
14
VCC_BBI
4
24
VCC_BBQ
1
EUSY0280101
AD6548
U503
GND
33
I
2
3
IB
NC
8
Q
23
22
QB
20
REFIN
REFINB
19
REF_OP
21
RX1800
28
27
X
u
18
IN
QN
QP
IP
TEST POINT
CHECKING FLOW
WAVEFORM
CIRCUIT
Graph 4.3.3
Figure 4.3.3
Summary of Contents for KP110
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