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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
Check 1. Crystal and RF3300(GSM/WCDMA Transceiver) part
If you already check this crystal part, you can skip check 1
Figure 4-9-1. Test Point (Crystal Part)
Figure 4-9-2. Schematic (Crystal Part)
Figure 4-9-3. 26MHz at X100
TP01
X101
TP01
X101
X101
Crystal
GSM/WCDMA
Transceiver
(RF3300)
U110
Rev. F (Rev.1.0)
Rev. 1.0
Rev. 1.0
GND1
2
4
GND2
HOT1 1
3 HOT2
26MHz
TN4-26562
X101
R143
DNI
18
XOP
WTXIN
24
23
WTXLP
25
WTXQP
XON
17
MCLK
15
MCLKSEC
20
13
TESTOUT
VCCD
21
14
CLKREQ
DNI
R138
TP01
X101
Содержание TU750
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