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LG Electronics Inc.
LG501C
4.2.1.1 Checking DC Power supply circuit (PMIC)
Test Point
Circuit Diagram
TP1 :C2168B
QSC6055
TP2 :C2165B
C2139B2.2u
R2122B
0
R2121B
0
R2120B
0
R2119B
0
R2118B
0
R2117B
0
1u
C2155B
R2113B
0
R2114B
0
R2116B
0
R2115B
0
C2174B22u
C2158B
0.1u
+1.8V_MSME
+2.6V_MSMP
+2.1V_RFRX2
121K
R2112B
+2.8V_TCXO
+2.8V_LCD
C2149B0.1u
+2.1V_RFRX1
2.2u
C2169B
4.7u
C2170B
1u
C2177B
1u
C2176B
1u
C2163B
2.2u
C2164B
2.2u
C2165B
2.2u
C2166B
2.2u
C2167B
2.2u
C2172B
4.7u
C2171B
4.7u
C2168B
1u
C2173B
4.7u
C2175B
R2123B
0
0.1u
C2150B
0.1u
C2151B
C2152B0.1u
0.1u
C2157B
C2154B
0.1u
C2156B0.1u
1u
C2140B
C2141B1u
C2142B1u
1u
C2143B
C2145B1u
1u
C2144B
C2146B1u
1u
C2147B
C2148B1u
1u
C2153B
AC21
P18
W17
AB14
V16
W13
Y21
AB18
V22
V23
U22
R21
AB17
K22
K21
K18
K16
VDD_RFTX_6
VDD_RFTX_7
VDD_RFTX_8
VDD_RFTX_9
VDD_SPKR
VREG_RFRX1
REF_BYP
REF_GND
REF_ISET
VREG_5V
VREG_MMC
VREG_MPLL
VREG_MSMA
VREG_MSME1
VREG_MSMP
VREG_NCP
+2.1V_RFRX1
+2.1V_MSMA
+2.8V_LCD
+VPWR
+1.8V_MSME
+2.1V_RFRX2
-1.8V_NCP
+1.3V_MPLL
+2.25V_SMPS_RF
+2.6V_MSMP
+2.1V_RFTX
+2.1V_RFTX
+1.3V_MSMC
+2.8V_TCXO
+2.6V_BT
TP2
TP1
61
Summary of Contents for 501C
Page 1: ...Internal Use Only Service Manual LG 501C Date January 2011 Issue 1 0 ...
Page 21: ...LG Electronics Inc LG501C X XYUGj GutzpkG G GvrU XXUGj GtjjG G Gvr XWUGj G Gz Gj G G GvrU 21 ...
Page 25: ...LG Electronics Inc LG501C Y YZUGw GvrU Y UGw GvrU YYUGw GvrU 25 ...
Page 28: ...LG Electronics Inc LG501C Figure 1 1 Block Diagram of LG501C 28 ...
Page 30: ...LG Electronics Inc LG501C 30 ...
Page 31: ...LG Electronics Inc LG501C 31 ...
Page 50: ...LG Electronics Inc LG501C Waveform U1801 2pin U1102 5pin U1102 1pin 50 ...
Page 59: ...LG Electronics Inc LG501C Waveform 4 1 2 c 4 1 2 d U1801 2pin U1102 5pin U1102 2pin 59 ...
Page 133: ...LG Electronics Inc LG501C Appendix 133 ...
Page 134: ...LG Electronics Inc LG501C Appendix 1 Block Diagram LG501C BLOCK DIAGRAM 134 ...
Page 135: ...LG Electronics Inc LG501C Appendix 2 Circuit diagram 135 ...
Page 147: ...LG Electronics Inc LG501C 2 1 MAIN PCB CIRCUIT DIAGRAM Internal Use Only 147 ...
Page 150: ...LG Electronics Inc LG501C Appendix 3 BGA Pin Map 150 ...
Page 151: ...LG Electronics Inc LG501C 3 1 U7301B BCM2070B2KUBXG EUSY0418701 USED PIN NOT USED PIN 151 ...
Page 152: ...LG Electronics Inc LG501C 3 2 U2101B QSC6055 CD EUSY0336202 NOT USED PIN 152 ...
Page 153: ...LG Electronics Inc LG501C 3 3 U2201B H8BCS0SI0BAR 46M EUSY0347506 153 ...
Page 154: ...LG Electronics Inc LG501C 3 4 U6481B TPA6136A2YFF EUSY0412501 USED PIN NOT USED PIN 154 ...
Page 155: ...LG Electronics Inc LG501C Appendix 4 Component Layout 155 ...