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LG Electronics 37LN548C/549C, 37LN548C/549C-ZA, 37LP360H/361H-ZA IR & LED, CONTROL

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1000pF

50V

C603

+3.5V_ST

LED_R

0.1uF

16V

C602

10K

1%

R603

100pF

50V

C604

0.1uF

C609

CONTROL_FILTER

+3.5V_ST

0.1uF

C608

CONTROL_FILTER

+3.5V_ST

22

R604

10K

1%

R602

KEY1

47K

R607

IR

KEY2

5.6V

D603

BLM18PG121SN1D

L601

CONTROL_FILTER

BLM18PG121SN1D

L602

CONTROL_FILTER

BLM18PG121SN1D

L600

22

IR_OUT

R605

+3.5V_ST

+3.5V_ST

47K

IR_OUT

R612

IR_OUT

10K

IR_OUT

R609

0

R611

OPT

2SC3052

IR_OUT

Q600

EB

C

2SC3052

IR_OUT

Q601 E

B

C

12507WR-08L

P600

1

2

3

4

5

6

7

8

9

10K

IR_OUT

R606

47K

IR_OUT

R608

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.

0

CONTROL_NO_FILTER

R614

0

CONTROL_NO_FILTER

R615

1.8K

R610

6

IR/CONTROL

IR & LED

CONTROL

IR OUT

2013 S7LR2 2012.11.12

Copyright © 2013 LG Electronics. Inc. All rights reserved.

Only for training and service purposes

LGE Internal Use Only

Contents

Main Page SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE General Guidance Before returning the receiver to the customer, Leakage Current Cold Check(Antenna Cold Check) SERVICING PRECAUTIONS Page SPECIFICATION 1. Application range 2. Requirement for Test 3. Test method 4. Model General Specification Page 5. Video resolutions (2D) 5.1. Component Input (Y, CB/PB, CR/PR) 5.3. RGB Input (PC) - FHD Model 5.2. RGB Input (PC) - HD Model 5.3. HDMI Input(PC/DTV) ADJUSTMENT INSTRUCTION 1. Application Range 2. Designation 3. Main PCB check process * Boot file Download 3.1. ADC Process 3.2. EDID Download 3.3. EDID data 3.4 Function Check 4. Total Assembly line process 4.1. White Balance adjustment * Auto-control interface and directions * Manual W/B process using adjust Remote control. 4.5. Outgoing condition Configuration 5. GND and HI-POT Test 5.1. HI-POT auto-check preparation 5.2. HI-POT auto-check 5.3. Checkpoint 6. Model name & Serial number D/L 7. CI+ key download GP4_LOW 7.1. Communication Prot connection 7.2. CI+ Key Download 8. Check Commercial Features. 8.1. External speaker(8OHM, 1W, Single-End) 8.2. IR OUT TROUBLE SHOOTING GUIDE 1. Check the booting Voltage 2. Digital TV Video 3. Analog TV Video 4. AV Video 6. HDMI Video 5. RGB Video 7. Audio of All iput 8. TV Audio 9. AV Audio 10. RGB Audio S7LR2 (LGE211A-T8) Tuner BLOCK DIAGRAM CI EXPLODED VIEW LGE2112-T8 22 PM MODEL OPTION I2C Internal demod out LGE2112-T8 AR102 AT24C256C-SSHL-T 22 AR101 IC104 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS DVB_S MAIN2 H/P OUT DTV_IF +1.5V_DDR +3.3V_Normal +2.5V/+1.8V S7LR core 1.2V volt FROM LIPS & POWER B/D NTP-7500L IC501 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS POWER 5 IR & LED FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IR/CONTROL 6 CONTROL LVDS MIRROR Change in S7LR FOR FHD REVERSE(10bit) 7 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS HDMI 8 HDMI_1 SIDE_HDMI HDMI_2 RS232C RS-232C FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS SPDIF OPTIC JACK 11 HEADPHONE PC AUDIO FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS CLose to DDR3 12 H5TQ1G63DFR-H9C LGE2112-T8 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 13 S_FLASH FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS PSC008-01 REAR COMPONENT PHONE JACK Full Scart SPEAKER OUT JACK FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 18 EXT_SPK IC1800 * Option name of this page : CI_SLOT CI Region (because of Hong Kong) CLOSE TO MSTAR PCMCI 19 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS TU2602 GP4R_GLOBAL_TUNER_BLOCK Close to TUNER 26 20 12 .1 1. 122013 S7LR2 TUNER