LG SJ8 - Circuit Voltage Chart; Ics; Capacitors; Connectors

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Only for training and service purposes.
3-223-21
CIRCUIT VOLTAGE CHART
1. ICs ICs
Designator Description Pin No Pin Name Voltage Spec Measured Voltage
IC101 IC,Microcontrollers 87, 38, 16, 64 VDD 1.8 V ~ 3.6 V +3.342 V
IC102 IC,Serial Flash Memory 8 VCC 2.7 V ~ +3.6 V +3.343 V
IC201 IC,Serial Flash Memory 8 VCC 2.7 V ~ 3.6 V +3.345 V
IC260 DSP
7 AVDD 2.97 V ~ 3.63 V 3.341 V
20, 35, 53, 71 DVDD 1.14 V ~ 1.26 V 1.211 V
15 PVDD 2.97 V ~ 3.63 V 3.338 V
2, 18, 38, 56 IOVDD 1.71 V ~ 3.63 V 1.208 V
IC261 IC,Serial Flash Memory 8 VCC 2.7 V ~ +3.6 V +3.344 V
IC301 IC,DC,DC Converter
1 VIN +4.5 V ~ +17 V + 12.07 V
2 VOUT 0.8 V ~ 10 V 1.210 V
IC303 IC,DC,DC Converter
4 VIN +2.7 V~+5.5 V +5.09 V
3 VOUT 0.6 V~5 V 3.365 V
IC304 IC,Analog Switch
5 VIN 2.5 V ~ 5.5 V +3.345 V
1 VOUT
IC305 IC,Analog Switch
5 VIN +2.5 V ~ +5.5 V +3.343 V
1 VOUT 5.17 V (USB 5.16 V)
IC308 IC,Analog Switch
5 VIN +2.5 V ~ +5.5 V +3.346 V
1 VOUT
IC309 IC,DC,DC Converter
4 VIN +2.7 V~+5.5 V +5.08 V
3 VOUT 0.6 V ~ 5 V 3.51 V
IC310 IC,DC,DC Converter
4 VIN +2.7 V~+5.5 V +5.08 V
3 VOUT 0.6 V ~ 5 V 1.516 V
IC311 IC,DC,DC Converter
4 VIN 2.7 V ~ 5.5 V +5.09 V
3 VOUT 0.6 V ~ 5 V 1.216 V
IC312 IC,Analog Switch
5 VIN +4.5 V ~ +5.5 V +5.097 V
1 VOUT
IC380 IC,DC,DC Converter
2 VIN +4.0 V~+30 V +25.13 V
3 VOUT 0.8 V ~ 27 V 12.08 V
IC381 IC,DC,DC Converter
1 VIN +4.5 V ~ +17 V + 12.06 V
2 VOUT 0.8 V ~10 V 5.13 V
IC382 LDO
3 VIN +2.5 V~+5.5 V +5..12 V
6 VOUT 1.5 V ~ 5 V 3.321 V
IC383 LDO
1 VIN +2.0 V~+6.0 V +3.319.06 V
6 VOUT 0.8 V ~ 5 V 1.214 V
IC501 MPEG
K12 DVCC12 1.14 V ~ 1.26 V +1.215 V
G14 DVCC33 3.15 V ~ 3.45 V
N23 AVDD12 1.14 V~ 1.26 V +1.214 V
R26 AVDD33 3.15 V ~ 3.45 V +3.342 V
AC3 DDRVCCIO1
N8 DDRVREF
IC503 DDR3 SDRAM VIN +2.8 V~+5.5 V +3.42 V
IC504 DDR3 SDRAM VIN +2.8 V~+5.5 V +3.42 V
IC505 NAND VCC -0.6 V to + 4.6 V +3.345 V
IC705 DAC
13, 21, 25, 47 VDD 1.14 V ~ 1.26 V +1.215 V
20, 48 DVCC 3,135 V ~ 3.465 V +3.32 V
14, 24, 31 AVCC 3.135 V ~ 3.465 V +3.32 V
IC706 AMP
17 AVCC 4.5 V ~ 26 V 25.12 V
18, 19, 31, 32 PVCC 4.5 V ~ 26 V 25.13 V
IC708 AMP
17 AVCC 4.5 V ~ 26 V 25.12 V
18, 19, 31, 32 PVCC 4.5 V ~ 26 V 25.13 V
IC801 IC,Serial Flash Memory 8 VCC 2.7 V ~ + 3.6 V ++3.342 V
Designator Description Pin No Pin Name Voltage Spec Measured Voltage
IC802 IC,Analog Switch
5 VIN +2.5 V ~ +5.5 V +3.341 V
1 VOUT
IC803 IC,Analog Switch
5 VIN +4.5 V ~ +5.5 V +5.096 V
1 VOUT
IC804 IC,DC,DC Converter
1 VIN +4.5 V ~+ 17 V + 5.11 V
2 VOUT 0.8 V ~ 10 V 1.08 V
Location Specifi cation Measured [V]
C707
330uF / 35 V
+25.2 V
(105 / 2000HR)
C708
330uF / 35 V
+25.2 V
(105 / 2000HR)
C711
330uF / 35 V
+25.2 V
(105 / 2000HR)
C712
330uF / 35 V
+25.2 V
(105 / 2000HR)
CE381
330uF / 35 V
+25.2 V
(105 / 2000HR)
2. CAPACITORS
3. CONNECTORS
Test Connector Specifi cation Connector (Main)
Matching
Connector
Bluetooth
CN204
3.0 V ~ 3.6 V 3.352 V 3.350 V
(PIN10)
Wi-Fi
CN203
2.97 V ~ 3.63 V 3.421 V 3.241 V
(PIN1)
Wireless
CN201
3.0 V ~ 3.6 V 3.354 V 3.353 V
(PIN1)