LG SL4Y Service Manual

Copyright © 2019 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
3-343-33
CIRCUIT VOLTAGE CHART
IC Sym Pin Spec Measured Voltage
IC300
DC,DC
Vin: 1
SW: 2
Vin: 4.2 V ~ 17 V
VOUT: 0.8 V ~ 10 V
Vin: 12.02 V
VOUT: 5.20 V
IC301
DC,DC
Vin: 4
SW: 3
Vin: 2.7 V ~ 5.5 V
VOUT: 0.6 V ~ 5.225 V
Vin: 5.21 V
VOUT: 3.44 V
IC302
DC-DC
VIN: 2
VOUT: 3
Vin: +4.0 V ~ +36 V
Vout: 0.8 V ~ 33 V
Vcc: 25.42 V
Vout: 12.02 V
IC303
DC,DC
Vin: 4
SW: 3
Vin: 2.7 V ~ 5.5 V
VOUT: 0.6 V ~ 5.225 V
Vin: 5.22 V
VOUT: 1.41 V
IC306
Switch IC
Vin: 5
Vout: 1
Vin: 2.5 V ~ 5.5 V
out: 0 V ~ 5.5 V
Vin: 3.38 V
out: 3.36 V
IC309
Switch IC
Vin: 5
Vout: 1
Vin: 2.5 V ~ 5.5 V
out: 0 V ~ 5.5 V
Vin: 3.38 V
out: 3.36 V
IC310
Switch IC
Vin: 5
Vout: 1
Vin: 2.5 V ~ 5.5 V
out: 0 V ~ 5.5 V
Vin: 3.34 V
out: 3.33 V
IC311
LDO IC
Vin: 1
Vout: 5
Vin: 2.3 V ~ 6 V
Vin: 5.24 V
Out: 3.43 V
IC312
LDO IC
Vin: 1
Vout: 5
Vin: 2.3 V ~ 6 V
Vin: 5.22 V
Out: 3.4 V
IC313
Switch IC
Vin: 5
Vout: 1
Vin: 2.5 V ~ 5.5 V
out: 0 V ~ 5.5 V
Vin: 3.34 V
out: 3.33 V
IC500
RESET
VCC: 3
VCC: 1.0 V ~ 7 V VCC: 3.35 V
IC501
MAIN DSP
VDD : 20, 52, 83
VDDAADC : 121
VD33 : 7,18,25,54,71,79,81,82
VD33PLL : 41
VD33USB : 37
VD33ADAC : 98, 116
VD33AADC : 126
VDD : 1.3 V ± 5 %
VDDAADC : 1.3 V ± 5 %
VD33 : 3.3 V ± 5 %
VD33PLL : 3.3 V ± 5 %
VD33USB : 3.3 V ± 5 %
VD33ADAC : 3.3 V ± 5 %
VD33AADC : 3.3 V ± 5 %
VDD : 1.34 V
VDDAADC : 1.35 V
VD33 : 3.33 V
VD33PLL : 3.33 V
VD33USB : 3.33 V
VD33ADAC : 3.31 V
VD33AADC : 3.26 V
IC503
SERIAL FLASH
MEMORY
VCC: 8
VCC: 2.7 V ~ 3.6 V VCC: 3.30 V
IC504
SERIAL FLASH
MEMORY
VCC: 8 VCC: 2.7 V ~ 3.6 V VCC: 3.34 V
IC505
SERIAL FLASH
MEMORY
VCC: 8 VCC: 2.7 V ~ 3.6 V VCC: 3.37 V
IC703
AMP
GVDD_AB: 1
GVDD_CD: 22
PVDD_AB: 36,37,38
PVDD_CD: 29,30,31
VDD: 2
DVDD: 8
AVDD: 13
GVDD_AB: -0.3 V ~ 13.2 V
GVDD_CD: -0,3 V ~ 13.2 V
PVDD_AB: -0.3 V ~ 50 V
PVDD_CD: -0.3 V ~ 50 V
VDD: -0.3 V ~ 13.2 V
DVDD: -0.3 V ~ 4.2 V
AVDD: -0.3 V ~ 8.5 V
GVDD_AB: 11.9 V
GVDD_CD: 11.9 V
PVDD_AB: 25.5 V
PVDD_CD: 25.5 V
VDD: 11.9 V
DVDD: 3.32 V
AVDD: 7.76 V

LG SL4Y Specifications

General

Color	black
Audio Channels	2.1
Subwoofer	included
Surround Sound	dolby digital
Number of Drivers	2
RMS Power	300 watts
Inputs	toslink optical, usb type a
Outputs	usb type a
HDMI Inputs	0
HDMI Outputs	0
USB Ports	1
Bluetooth	yes
Wireless Connectivity	bluetooth
Wireless Subwoofer Connectivity	yes
Optical Audio Inputs	1
Remote Control	yes

Weight and Dimensions

Depth	3.3 inches
Height	2.2 inches
Width	35 inches
Net Weight	5 pounds
Subwoofer Depth	10.3 inches
Subwoofer Height	15.4 inches
Subwoofer Width	6.7 inches
Subwoofer Weight	11.7 pounds