LG HT503TH-AH Service Manual

2-62 2-63
CIRCUIT VOLTAGE CHART
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
MPEG (IC501)
Names Pin Numbers Voltage
COREVCC 1.5 16, 48, 79, 124, 185, 188 1.51 V
VD33_DAC 97, 101 3.47 V
VD33_PLL 107 3.47 V
AVD33 109 3.47 V
VD33RF 145,163,183 3.43 V
VD33 1, 14, 30, 46, 62, 77, 95, 119, 133, 186, 203 3.47 V
SDRAM (IC502)
Names Pin Numbers Voltage
VCC33 1, 3, 9, 14, 27, 43, 49 3.47 V
FLASH (IC503)
Names Pin Numbers Voltage
VD33 1, 3, 8 3.47 V
EEPROM (IC504)
Names Pin Numbers Voltage
VD33 8 3.47 V
IPOD (IC507)
Names Pin Numbers Voltage
VCC33 1, 40 3.47 V
ADC (IC201)
Names Pin Numbers Voltage
VCC50 5, 14, 30 4.87 V
VCC33 36, 46 3.47 V
SERVO (IC401)
Names Pin Numbers Voltage
12V_INPUT 12 12.04 V
MVCC50 5, 19 4.86 V
COREVCC1.5 28 1.56 V
HDMI RX (IC801)
Names Pin Numbers Voltage
RAVD33 6, 7, 13, 16, 19, 37, 38, 42, 46, 50, 55, 57, 61, 65, 69, 98, 99 3.28 V
RDVD33 5, 26, 76, 89, 109, 122, 134 3.28 V
RAVC18 22, 94 1.8 V
RDVC18 23, 35, 74, 79, 92, 105, 114, 128, 139 1.8
EEPROM (IC802)
Names Pin Numbers Voltage
EEP_VCC(VCC50) 8 4.32 V
QS34XVH245 (IC803)
Names Pin Numbers Voltage
RDVD33 50, 60, 70, 80 3.28 V
ADG884 (IC804)
Names Pin Numbers Voltage
EEP_VCC(VCC50) 1 4.32 V
HDMI TX (IC805)
Names Pin Numbers Voltage
TDVD33 13, 28, 34, 48, 70 3.23 V
TAVD33 23, 38 3.29 V
TDVC18 4, 16, 45, 59, 74 1.8 V
LC87F5R64A (IC101)
Names Pin Numbers Voltage
5V_P 9, 36, 59 5.04 V
TS5A2053 (IC202)
Names Pin Numbers Voltage
VCC50 8 4.87 V

LG HT503TH-AH Specifications

General

Brand	LG
Model	HT503TH-AH
Category	Receiver
Language	English