Checking Wcdma Block - LG TU750 Service Manual

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4.20 Checking WCDMA Block

start
1. Check
VCXO Block
2. Check
Front End Module
3. Check
Control Signal
4. Check
RF TX Level
5. Check
PAM Block
6. Check
RF RX Level
Re-download SW, Cal
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
(Top)
(Bottom)
Figure 4-12. WCDMA Block
- 145 -
4. TROUBLE SHOOTING
U110
GSM/WCDMA
Transceiver
(RF3300)
U103
WCDMA
PAM
Duplexer / Isolator / DCDC
SW101
RF switch
LGE Internal Use Only

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