Main
CHASSIS : LD3AF
Internal Use Only
MODEL : 32LN549E 32LP63*H
LED TV SERVICE MANUAL
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. Supported 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
4. Total Assembly line process
4.1. Adjustment Preparation
* Auto-control interface and directions
* Manual W/B process using adjust Remote control.
4.2. DPM operation confirmation (Only Apply for MNT Model)
4.3. DDC EDID Write (RGB 128Byte )
4.4. DDC EDID Write (HDMI 256Byte)
4.5. EDID data
4.5.1. Auto Download
4.5.2. Manual Download
4.6. Outgoing condition Configuration
4.7. HI-POT Test
4.7.1. HI-POT auto-check preparation
4.7.2. HI-POT auto-check
5. Model name & Serial number D/L
5.1. Signal Table
5.2. Comand Set
5.3. Method & notice
6. CI+ Key Download method
6.1. Download Procedure
8. Commercial Feature inspection
8.1. LG Logo inspection
8.2 Welcome Screen Function check
8.3. USB Cloning Function check
CASE 1. Clock LED Model
CASE 2. No Clock LED Model
8.4. Check Commercial features concerning Output.(IR Out/SPK Out/External Clock)
8.4.1. External SPK Out and Volume control
8.4.2. IR Out
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TROUBLESHOOTING GUIDE
1. Check the booting Voltage
2. Digital TV Video
3. Analog TV Video
4. Component Video
5. RGB Video (LN549E Only)
6. HDMI Video
7. Audio of All input
8. TV Audio
9. AUDIO IN (Component/DVI Audio) (PC Audio:LN549E Only)
BLOCK DIAGRAM
S7LR2 (LGE2111A-T8)
NEC Micom
CI
EXPLODED VIEW
+3.3V_Normal
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
4
AP7173-SPG-13 HF(DIODES)
1.5A
P4R_GLOBAL_TUNER_BLOCK
ERROR & VALID PIN
Close to TUNER
close to TUNER
VREF=1.25V
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
LGE2112-T8
* Dual Stream is only Korea 3D spec
2
EXTERNAL SPEAKER OUT
NTP-7500L
IC501
5
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
EMEA INTERACTIVE AUDIO AMP
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
[51Pin LVDS Connector] (For FHD 60/120Hz) [30Pin LVDS Connector] (For HD 60Hz_Normal)
7
EMEA INTERACTIVE LVDS WAFER
Pol-change
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
RS232C_9PIN
RS232C
EMEA INTERACTIVE
10
RGB/SPDIF/PC/HP/USB
EARPHONE BLOCK
EMEA INTERACTIVE
USB2_DIODES
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
IC1300
IC1300-*1
W25Q80BVSSIG
MX25L8006EM2I-12G
Full Scart/ Comp1
EMEA INTERACTIVE
REAR COMPONENT PHONE JACK
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
IC1700
UART/I2C SWITCH
MSTAR ADJ
MSTAR DEBUG
EXT_SPK_CONTROL/DEBUG
EXT_SPK OUT
* Option name of this page : CI_SLOT CI Region (because of Hong Kong)
CLOSE TO MSTAR
EMEA INTERACTIVE
PCMCI 19
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ETHERNET
LAN 21
* H/W option : ETHERNET
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
+5V_ST
REAL TIME CLOCK(RTC)
3
Step Up regulator from 3.5V to 5V
IC301
UPD78F1164GF(S) NEC_MICOM
IR & LED
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
6
CONTROL
EMEA INTERACTIVE IR/CONTROL
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
HDMI_1
HDMI
8
HDMI_2
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
LGE2112-T8
H5TQ1G63DFR-H9C
S7LR_DIVX_MS10
IC1201
LGE2112-T8
22
PM MODEL OPTION
I2C
Internal demod out
LGE2112-T8
AR102
AT24C256C-SSHL-T
22 AR101
IC104
DVB-S2 LNB Part Allegro
PCB_GND and A_GND are connected
DCDC_GND and A_GND are connected in pin#27
Input trace widths should be sized to conduct at least 3A
DCDC_GND and A_GND are connected