LG GW520 - Page 70

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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. Trouble shooting
VDD_RTC
VDD_RTC
VDDP_DIGA
20p
C144
20p
C147
12
X100
32.768KHz
FC-135
EXXY0018701
C145
DNI DNI
C146
T1
SPCU_RQ_IN0
R3
SPCU RQ IN1
D6
OSC32K
RESET_N
E6
RSTOUT_N
R2
RTC_OUT
F7
MEM_CAS_N
D14
MEM_CKE
H11
D5
F32K
B1
CLK32K
BT VCXO EN
CLK32K
RTC_OUT
_RESET
_CAS
CKE
DNI
FB501
1V8_SD
1000pC514
1000pC509
R507 0
C508
DNI
R505 0
4
NL17SZ14DFT2
EUSY0144701
U501
2
3
GND
VCC
5
BT_CLK
26MHZ
FSYSOUT1
(1%)
C543 1000p
R513
20
820
R515
C559
0.01u
2V85_VRF
C560
0.1u
C550 1000p
10K
R514
C561
EXSK0008201
KT3225K26000ECW29ZA0
X500
GND
2
OUT
3
4
VCC
1
VCONT
1u
26MHz
J4
VBIAS
VCO_RC
C5
D10
H10
TXBAND1
TXBAND2
G10
F10
TXBAND3
RXBAND2
RXBAND3
GND29
CLK_PM
G9
H9
DA_PM
EN_PM
C7
K2
FE1
FE2
H3
B10
FSYSIN_PM
FSYSOUT1
A9
C9
FSYSOUT2
FSYSOUT3
D9
2G_DATA
2G_CLK
2G_BS
FSYSOUT1
AFC
2G_EN
END
ADI RPWRON(H)
END KEY CIRCUIT
2V11_RTC
R208 100K
2
56
31
4
Q200
EQBN0013701
EMX18
R220
DNI
R205
100K
R204
100K
R221
100K
DNI
R222
R201 0
DNI
R223
R215
10K
0R207
0R202
0
R216
KEY_ROW5
KEY_COL7
RPWRON_DBB
RPWRON
END_KEY
RPWRON_EN
RPWRON
PWRON
END_KEY
TP1
TP2
TP3