LG MG180C Service Manual page 80

4.15.4 Checking Tx I/Q (Tx pass continued)
C525
0.1u
RF2.85V
Check I /Q
Norm al?
Yes
Redownload t he sof tware
and calibration
1
SCLK
2
_SEN
3
SDIO
4
U501 BQN
5
SI4210 BQP
6
BIN
7
BIP
8
XOUT
C526
0.1u
V_IO
4. TROUBLE SHOOTING
No
Repl ace U100
C542 C541
18p 8p R560
100
R561
100
R511 560
C521
390p
R512 560
R513 560
C523
390p
R514 560
TXIP
TXQP
- 79 -
TCXO_OUT
S_CLK
S_EN
S_DATA
RXQN
RXQP
RXIN
RXIP
TXQN
TXQP
TXIN
TXIP
26MHz
PDNB