LG S55A3-D Service Manual

3-403-39
CIRCUIT VOLTAGE CHART
1. ICs
Designator Description Specifi cation Pin Number Voltage Spec Real Value
Main Board
IC501, IC505 IC,Serial Flash Memory W25Q80DVSSIG 8MBIT VCC: #8 VCC: 2.7 V ~ 3.6 V VCC: 3.2 V
IC502 IC,Digital Signal Processors MLC3730ST
CORE SUPPLY VOLTAGE:
VDD12INT: #23
VDD12CORE: #55, #107, #142,
#160
VDD12PLL: #87
VDD12USB20: #66
IO SUPPLY VOLTAGE:
VDD33IO: #1, #43, #90, #132,
#158
VDD33OSC: #68
VDD33ADC: #171
VDD33USB11: #164
VDD33USB20: #57, #60
CORE SUPPLY VOLTAGE:
1.08 V ~ 1.32 V
IO SUPPLY VOLTAGE:
3.0V ~ 3.6 V
CORE SUPPLY VOLTAGE:
1.24 V
IO SUPPLY VOLTAGE:
3.3 V
IC503 IC,SDRAM M12L64164A-5TG2Y 64MBIT VDDQ: #3, #9, #43, #49 VDDQ: 3.0 V ~ 3.6 V VDDQ: 3.34 V
IC504 IC,Voltage Detector APX809-29SR VCC: #3 VCC: 1.1 V ~ 5.5 V VCC: 3.34 V
IC506 IC,Serial Flash Memory W25Q32FVSSIG 32MBIT VCC: #8 VCC: 2.7 V ~ 3.6 V VCC: 3.34 V
IC507 IC,I/O Support Chip CS8422-CNZR
VL: #22
VA: #3
V_REG: #19
VL: 1.71 V ~ 5.25 V
VA: 3.135 V ~ 3.465 V
V_REG: 3.135 V ~ 3.456 V
VL: 3.32 V
VA: 3.32 V
V_REG: 3.32 V
IC508 IC,A/D Converter PCM1808
VCC: #3
VDD: #4
VCC: 4.5 V ~ 5.5 V
VDD: 2.7 V ~ 3.6 V
VCC: 5.08 V
VDD: 3.32 V
IC603 IC,DC,DC Converter MP1432 VIN: #7 VIN: 4.5 V ~ 45 V VIN: 25.2 V
IC604, IC605, IC606 IC,DC,DC Converter TPS563200
VIN: #3
SW: #2
VIN: 4.5 V ~ 17 V
SW: 0.76 V ~ 7 V
VIN: 12.01 V
SW: 1.22 V, 5.15 V, 3.35 V
IC607, IC608 IC,Analog Switch BD2242G
VIN: #1
VOUT: #6
VIN: 2.8 V ~ 5.5 V
VOUT: 2.8 V ~ 5.5 V
VIN: 3.3 V
VOUT: 3.3 V
IC701 IC,Sound/Audio Processor PS9860
VDD_IO: #17, #52
VDD_CORE: #6, #25
VIN33_REG1: #34
VIN33_REG2: #66
VDD_PLL: #68
VDD_IO: 2.97 V ~ 3.63 V
VDD_CORE: 1.08 V ~ 1.32 V
VIN33_REG1: 2.97 V ~ 3.63 V
VIN33_REG2: 2.97 V ~ 3.63 V
VDD_PLL: 1.08 V ~ 1.32 V
VDD_IO: 3.4 V
VDD_CORE: 1.23 V
VIN33_REG1: 3.2 V
VIN33_REG2: 3.2 V
VDD_PLL: 1.19 V
IC703 IC,Audio Amplifi er TAS5612LADDVR
PVDD: #29, #30, #31, #36, #37,
#38
GVDD: #1, #22
VDD: #2
PVDD: 12 V ~ 34 V
GVDD: 10.8 V ~ 13.2 V
VDD: 10.8 V ~ 13.2 V
PVDD: 24.2 V
GVDD: 11.7 V
VDD: 11.8 V
Front Board
RC300 Receiver Module R84FH1H VCC: #3 VCC: 2.7 V ~ 5.5 V VCC: 3.33 V

LG S55A3-D Specifications

General

Brand	LG
Model	S55A3-D
Category	Speaker System
Language	English