LG SPK8-W Service Manual

Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
3-203-19
CIRCUIT VOLTAGE CHART
1. ICs ICs
2. CAPACITORS
3. CONNECTORS
Location Name Pin No Pin Name Spec Measured Voltage
IC100 MICOM 87, 38, 16, 64 VDD 1.8 V ~ 3.6 V 3.341 V
IC101 Serial Flash 8 VCC 2.7 V ~ 3.6 V 3.345 V
IC102 Serial Flash 8 VCC 2.7 V ~ 3.6 V 3.342 V
IC203 Switch
5 VIN + 4.5 V ~ + 5.5 V + 5.087 V
1 VOUT
IC300 DC,DC
2 VIN + 4.0 V ~ + 30 V + 23.02 V
3 VOUT 0.8 V ~ 27 V 12.07 V
IC301 DC,DC
1 VIN + 4.5 V ~ + 17 V + 12.05 V
2 VOUT 0.8 V ~ 10 V 1.216 V
IC302 DC,DC
1 VIN + 4.5 V ~ + 17 V + 12.08 V
2 VOUT 0.8 V ~ 10 V 5.122 V
IC303 DC,DC
4 VIN + 2.7 V ~ + 5.5 V + 5.091 V
3 VOUT 0.6 V ~ 5 V 3.364 V
IC304 Switch
5 VIN + 2.5 V ~ + 5.5 V + 3.339 V
1 VOUT
IC305 Switch
5 VIN + 2.5 V ~ + 5.5 V + 3.346 V
1 VOUT
IC306 LDO
3 VIN + 2.5 V ~ + 5.5 V + 5.121 V
6 VOUT 1.5 V ~ 5 V 3.323 V
IC307 LDO
1 VIN + 2.0 V ~ + 6.0 V + 3.315 V
5 VOUT 0.8 V ~ 5 V 1.212 V
IC308 Switch
5 VIN + 2.5 V ~ + 5.5 V + 3.341 V
1 VOUT
IC309 DC,DC
4 VIN + 2.7 V ~ + 5.5 V + 5.08 V
3 VOUT 0.6 V ~ 5 V 3.51 V
IC310 DC,DC
4 VIN + 2.7 V ~ + 5.5 V + 5.07 V
3 VOUT 0.6 V ~ 5 V 1.512 V
IC312 DC,DC
4 VIN + 2.7 V ~ + 5.5 V + 5.5 V
3 VOUT 0.6 V ~ 5 V 1.217 V
IC501 MPEG
K12 DVCC12 1.14 V ~ 1.26 V + 1.213 V
G14 DVCC33 3.15 V ~ 3.45 V + 3.345 V
N23 AVDD12 1.14 V ~ 1.26 V + 1.218 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 + 3.427 V
IC504 DDR3 SDRAM VIN + 2.8 V ~ + 5.5 V + 3.421 V
IC505 NAND VCC - 0.6 V ~ + 4.6 V + 3.344 V
IC601 DSP
VDD_INT 1.05 V ~ 1.15 V 1.128 V
VDD_EXT 3.13 V ~ 3.47 V 3.341 V
VDD_DMC 1.425 V ~ 1.575 V 1.522 V
VDD_USB 3.13 V ~ 3.47 V 3.348 V
IC602 Serial Flash 8 VCC 2.7 V ~ 3.6 V 3.343 V
IC705 DAC
13, 21, 25, 47 VDD 1.14 V ~ 1.26 V + 1.216 V
20, 48 DVCC 3.135 V ~ 3.465 V + 3.351 V
6, 14, 24, 31 AVCC 3.135 V ~ 3.465 V + 3.332 V
IC706 AMP
17 AVCC 4.5 V ~ 26 V 23.01 V
18, 19, 31, 32 PVCC 4.5 V ~ 26 V 23.03 V
IC707 AMP
17 AVCC 4.5 V ~ 26 V 23.00 V
18, 19, 31, 32 PVCC 4.5 V ~ 26 V 22.98 V
Location Name Pin No Pin Name Spec Measured Voltage
IC708 AMP
17 AVCC 4.5 V ~ 26 V 23.03 V
18, 19, 31, 32 PVCC 4.5 V ~ 26 V 23.01 V
IC710 AMP
17 AVCC 4.5 V ~ 26 V 22.99 V
18, 19, 31, 32 PVCC 4.5 V ~ 26 V 23.00 V
IC800 HDMI
LPSBV 4.5 V ~ 5.5 V 5.053 V
RXn1_PWR5V 4.5 V ~ 5.3 V 5.041 V
SBVCC5 4.5 V ~ 5.5 V 5.07 V
IO_VDD33 3.14 V ~ 3.46 V 3.325 V
RX_AVDD33 3.14 V ~ 3.46 V 3.321 V
TX0_AVDD33 3.14 V ~ 3.46 V 3.325 V
RX_AVDD10 1.0 V ~ 1.1 V 1.046 V
TXn_AVDD10 1.0 V ~ 1.1 V 1.042 V
TXn_PVDD10 1.0 V ~ 1.1 V 1.044 V
CVDD10 1.0 V ~ 1.1 V 1.043 V
CG0_PVDD10 1.0 V ~ 1.1 V 1.04 V
RX_PVDD10 1.0 V ~ 1.1 V 1.041 V
IC801 Serial Flash 8 VCC 2.7 V ~ 3.6 V 3.341 V
IC802 Switch
5 VIN + 2.5 V ~ + 5.5 V + 3.346 V
1 VOUT
IC803 Switch
5 VIN + 4.5 V ~ + 5.5 V + 5.079 V
1 VOUT
IC804 DC,DC
1 VIN + 4.5 V ~ + 17 V + 5.15 V
2 VOUT 0.8 V ~ 10 V 1.121 V
Location Spec Measured [V]
C707 330uF/35V (105/ 2000HR) +23.12V
C708 330uF/35V (105/ 2000HR) +23.12V
C710 330uF/35V (105/ 2000HR) +23.12V
C711 330uF/35V (105/ 2000HR) +23.12V
C712 330uF/35V (105/ 2000HR) +23.12V
C7U9 330uF/35V (105/ 2000HR) +23.12V
C7V3 330uF/35V (105/ 2000HR) +23.12V
Test Connector Spec Connector (Main) Mating Connector
Bluetooth CN102 (PIN10) 3.0 V ~ 3.6 V 3.347 V 3.345 V
Wi-Fi CN501 (PIN1) 2.97 V ~ 3.63 V 3.421 V 3.389 V
Wireless (Subwoofer) CN104 (PIN1) 3.0 V ~ 3.6 V 3.344 V 3.349 V

LG SPK8-W Specifications

General

Brand	LG
Model	SPK8-W
Category	Speaker System
Language	English