LG Electronics 32LS679C-ZC service manual Rgb-Pc / Spdif, LGE Internal Use Only

Page 25

RGB-PC / SPDIF

RGB-PC / SPDIF

SPDIF OPTIC JACK

+3.3V_Normal

5.15 Mstar Circuit Application

SPDIF_OPTIC

JK1103

2F01TC1-CLM97-4F

GND

1

VCC

2

Optic

SPDIF_OUT

VIN

3

Fiber

OPT

SPDIF

_OPTIC

SPDIF_OPTIC

4

OPT

OPT

C1131

C1121

R1104

C1109

C1110

SHIELD

10K

22uF

10uF

16V

100pF

16V

16V

50V

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES

SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.

FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS

ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR

THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

PC AUDIO

PC_AUDIO

JK1102

PEJ027-04

3

E_SPRING

6A

T_TERMINAL1

PC_AUDIO

B_TERMINAL1

R1107

7A

AMOTECH

CO.,

LTD.

15K

OPT

NON_

CI_CAP_PC_

AUDIO

PC_R_IN

PC_AUDIO

4

R_SPRING

D1101

PC_AUDIO

C1107

R1102

R1110

100pF

10K

5

T_SPRING

5.6V

50V

470K

PC_AUDIO

B_TERMINAL2

R1108

7B

AMOTECH

CO.,

LTD.

15K

PC_L_IN

T_TERMINAL2

OPT

NON_

CI_CAP_PC_

AUDIO

PC_AUDIO

6B

D1102

C1108

PC_AUDIO

R1103

R1111

100pF

5.6V

470K

10K

50V

RGB

PC

RGB_PC

+5V_Normal

D1115

MMBD6100

C

A2

A1

NON_CI_CAP_RGB_PC

RGB_PC

RGB_PC

R1140

C1129

R1139

0.1uF

2.2K

2.2K

16V

RGB_DDC_SCL

NON_CI_CAP_RGB_PC

NON_CI_CAP_

RGB_PC

RGB_DDC_SDA

C1127

C1128

18pF

18pF

50V

50V

DSUB_VSYNC

DSUB_HSYNC

OPT

OPT

OPT

OPT

C1126

OPT

D1114

C1122

D1109

68pF

D1113

5.6V

68pF

20V

02 010L 50V

20V

50V

ADUC 20S

ADUC

20S

02

010L

OPT

D1116

5.6V

OPT

R1148

DSUB_B+

0

PM_RXD

ADUC

20S

02

010L

RGB_PC

OPT

OPT

R1133

D1110

R1149

75

20V

0

PM_TXD

R1150

R1151

DSUB_G+

0

0

ADUC

20S

02

010L

RGB_PC

OPT

+3.3V_Normal

R1135

D1111

75

20V

RGB_PC

R1146

RGB_PC

10K

R1147

1K

DSUB_DET

DSUB_R+

OPT

ADUC

20S

02

010L

D1117

5.6V

RGB_PC

OPT

ADMC 5M

02 200L

R1137

D1112

75

20V

GREEN GND

DDC DATA

BLUE GND

SYNC GND

DDC CLOCK

RED GND

GND 2

RED

GREEN

H SYNC

BLUE

NC

V SYNC

GND 1

DDC GND

11

12

13

14

15

16

6

7

8

9

10

1

2

3

4

5

JK1104

SPG09-DB-010

RGB_PC

GP4L_S7LR22011/09/27

RGB-PC/SPDIF 9

Copyright © 2012 LG Electronics. Inc. All rights reserved.	LGE Internal Use Only
Only for training and service purposes

Image 25

Contents SERVICE MANUAL CHASSIS LD21BREAD THE SAFETY PRECAUTIONS IN THIS MANUAL http//aic.lgservice.comSAFETY PRECAUTIONS CONTENTSSERVICING PRECAUTIONS SPECIFICATIONIMPORTANT SAFETY NOTICE SAFETY PRECAUTIONSElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSReplacement IC Remove/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Removal4. Model General Specification SPECIFICATION1. Application range 3. Test methodsymbolrate Symbolrate 4.0Msymbols/s to 7.2Msymbols/sDVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s DVB-S QPSK 2 ~ 45Msymbol/s5.1. Component Input Y, CB/PB, CR/PR 5. Video resolutions 2D5.2. RGB Input PC PCDVI 5.3. HDMI InputPC/DTVBoot file Download ADJUSTMENT INSTRUCTION1. Application Range 2. Designation3.3. EDID data 3.1. ADC Process3.2. EDID Download 7. ADC Calibration4.1. Adjustment Preparation 4. Total Assembly line process3.4 Function Check 6.1. Signal Table 4.3. Outgoing condition Configuration5. HI-POT Test 6. Model name & Serial number D/L6.3. Method & notice 7. MAC Address & CI+ key download7.1 MAC Address GP4LOW7.3. LAN PORT INSPECTIONPING TEST 7.2 LAN InspectionScrew specification and application situation SCREW ASSEMBLY WORKING GUIDEח ͷͲͳͤͤͤͪͥͣ͢͡ ͙;ͤ͛ͽͥͦ͑͟͝ͳͼ͑͝;ΒΔΙΚΟΖ͚ ח ͣ͢ͶͲ ח ͷͲͳͤͨͩͩͣ͑͢͡͡ ͙;ͧ͛ͽ͑͢͡͝ͳͼ͑͝;ΒΔΙΚΟΖ͚Rear BLOCK DIAGRAMSide LG2111 AEXPLODED VIEW Copyright 2012 LG Electronics. Inc. All rights reserved GP4LS7LR22011.12.01to delete CI or gate for for SYSTEM EEPROMVDDC Normal PowerNormal DDR3PowerDET FROM LIPS & POWER B/D+3.3VNormal +1.5VDDRIR/LED and control for normal models USB1DIODES USB SIDEUSB2DIODES HDMI THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES RGB-PC / SPDIFSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF ISCOMMERCIAL/NonOS MODEL OPTION COMMERCIAL MODEL OPTION RS-232CFor Comsumer model, use 4PIN Wafer LVDS for large inch GP4LS7LR22011/06/03 DDR25612 S7LR2DIVXMS10IC1201 H5TQ1G63DFR-H9CSFLASHMAINMACRONIX Serial Flash for SPI bootSFLASHMAINWINBOND IC1401-*1 W25Q80BVSSIG PHONE Headphone *Option HEADPHONEHEAD Option name of this page CISLOT because of Hong Kong CI Region10067972-0500LF GP4LS7LR22011/06/14 ETHERNET21 H/W option ETHERNETETHERNET TU2602TU2603 TDSS-G101D TDSN-G301D GP4RGLOBALTUNERBLOCKTU2601 TDSQ-G001DOptionLNB DVB-S2 LNB Part AllegroGP4LS7LR22011/11/02 DVBS27 DCDCGND and AGND are connectedFULL SCART / COMPONENT1 SCART / COMPONENT&COMPSITJK2801 PSC008-01AUDIO AMPSTA380BWE Page Contents of LCD TV Standard Repair Process Continue to the next page Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom ContentLCD TV A. Video errorMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A2 Check Power Board 24v outputCheck various voltages of PowerBoard 3.5V,12V,20V or 24V…Menu→ Set up→ Support → Signal Test Signal strength Normal over 50% By using Digital signal level meter By using Diagnostics menu on OSDSignal Quality Normal over 50% → Set-Top-Box, Different maker TV etc Check color by input -External Input COMPONENT -RGB A8/ A9※ Check Link CableVertical/Horizontal bar, residual image, light spot External device screen error-Color errorConnect other external device and cable Check color condition by input -External Input -Component RGBCheck Power LED B. Power errorCheck Power On ‘”High” Measure voltage of each output of Power B/DIf Power Off mode is not displayed Check Power B/D voltage Check Power Off ModePOWEROFFABNORMAL1 POWEROFFCPUABNORMAL24V of Power C. Audio errorCheck user menu Speaker off Check audio B+Check audio B+ Voltage In case of External Input signal error Check and fix external device1. Remote controlR/C operating error D. Function errorCheck & Repair Y Check technical Signal information input? - Fix information Check input signalRecognition error Replace Main B/DIdentify nose type E. NoiseF. Exterior defect