LG SJ8S Service Manual

Copyright © 2017 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
3-283-27
Designator Description Pin No Pin Name Voltage Spec Measured Voltage Temperature Spec.
IC500 SERIAL FLASH MEMORY 8 VCC 2.7 V ~ 3.6 V 3.32 V 85 °C
IC501 IC,Audio Amplifi er
20, 52, 83 VDD 1.3 V
105 °C
121 VDDAADC 1.35 V ± 5 % 1.33 V
7, 18, 25, 54, 71, 79, 81, 82, 41, 37
VD33/VD33PLL/USB_DCDC_
VCCA/VD3318
3.3 V ± 5 % 3.26 V
98.116,126 VD33ADAC/VD33AADC 3.3 V ± 5 % 3.23 V
IC605 LDO IC
5 VIN 2.5 V ~ 5.5 V 3.36 V
85 °C
1 VOUT 0 V ~ 5.5 V 3.31 V
IC606 LDO IC
5 VIN 2.5 V ~ 5.5 V 3.35 V
85 °C
1 VOUT 0 V ~ 5.5 V 3.29 V
IC702 AMP
1 GVDD_AB -0.3 V ~ 13.2 V 11.78 V
125 °C
22 GVDD_CD -0.3 V ~ 13.2 V 11.78 V
36, 37, 38 PVDD_AB -0.3 V ~ 50 V 25.40 V / 15.3 V
29, 30, 31 PVDD_CD -0.3 V ~ 50 V 25.47 V / 15.4 V
2 VDD -0.3 V ~ 13.2 V 11.9 V
8 DVDD -0.3 V ~ 4.2 V 3.247 V
13 AVDD -0.3 V ~ 8.5 V 7.706 V
1-2. SECONDARY UNIT
IC VOLTAGE
Designator Description SPEC Real Value (#1, #2)/ V Temperature Spec.
C201, CE602, CE703,
CE704
Capacitor,AL,Chip 330 uF / 35 V 25.76 25.75 25.78 25.81 25.76 -40 ~ 105°C/2000HR
WC633 Capacitor,AL,Chip 100 uF / 16 V 3.42 3.41 3.42 3.42 3.41 -55 ~ 105°C/2000HR
WC904 Capacitor,AL,Radial 100 uF / 460 V 155.3 155.4 155.4 155.29 155.4 -25 ~ 105°C/2000HR
WC917 Capacitor,AL,Chip 47 uF / 50 V 20.15 20.22 20.22 20.16 20.2 -55 ~ 105°C/2000HR
WC924, WC925, WC926 Capacitor,AL,Radial 1000 uF/ 50 V 34.9 34.88 34.9 34.93 34.88 -55 ~ 105°C/2000HR
2. CAPACITOR VOLTAGE

LG SJ8S Specifications

General

Brand	LG
Model	SJ8S
Category	Speaker System
Language	English