Internal Use Only North/Latin America Europe/Africa Asia/Oceania http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com LED TV SERVICE MANUAL CHASSIS : LD33P MODEL : 26LN46** 26LN46**-Z* CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS CONTENTS . ............................................................................................. 2 SAFETY PRECAUTIONS ......................................................................... 3 SERVICING PRECAUTIONS..................................................................... 4 SPECIFICATION........................................................................................ 6 ADJUSTMENT INSTRUCTION.................................................................
SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Exploded View. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.
SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First. General Servicing Precautions 1.
IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above. Removal 1.
SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3) Power Voltage : Standard input voltage (AC 100-240 V~, 50/60 Hz) * Standard Voltage of each products is marked by models. 4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM. 5) The receiver must be operated for about 20 minutes prior to the adjustment.
No.
5. Component Video Input (Y, Cb/Pb, Cr/Pr) No. Resolution H-freq(kHz) V-freq(Hz) Porposed 1 720×480 15.73 60.00 SDTV, DVD 480i 2 720×480 15.63 59.94 SDTV, DVD 480i 3 720×480 31.47 59.94 480p 4 720×480 31.50 60.00 480p 5 720×576 15.625 50.00 SDTV, DVD 625 Line 6 720×576 31.25 50.00 HDTV 576p 7 1280×720 45.00 50.00 HDTV 720p 8 1280×720 44.96 59.94 HDTV 720p 9 1280×720 45.00 60.00 HDTV 720p 10 1920×1080 31.25 50.00 HDTV 1080i 11 1920×1080 33.75 60.
ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to all of the LED TV with LD33P chassis. 3.2. LAN Inspection 3.2.1. Equipment & Condition ▪ Each other connection to LAN Port of IP Hub and Jig 2. Designation (1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument. (2) Adjustment must be done in the correct order.
3.2.3. WIDEVINE key Inspection - Confirm key input data at the "IN START" MENU Mode. 3.4. Model name & Serial number Download 3.4.1. Model name & Serial number D/L Press "P-ONLY" key of service remote control. (Baud rate : 115200 bps) ▪ Connect RS-232C Signal to USB Cable to USB. ▪ Write Serial number by use USB port. ▪ Must check the serial number at Instart menu. ▪ 3.4.2. Method & notice (1) Serial number D/L is using of scan equipment.
4. Manual Adjustment 3.5.1. Check the method of CI+ Key value (1) Check the method on Instart menu (2) Check the method of RS232C Command 1) Into the main ass’y mode(RS232: aa 00 00) CMD 1 CMD 2 Data 0 A A 0 * ADC adjustment is not needed because of OTP(Auto ADC adjustment) 0 2) Check the key download for transmitted command (RS232: ci 00 10) CMD 1 CMD 2 C I 4.1. EDID DATA 4.1.1. HDMI1 Data 0 1 0 3) Result value - Normally status for download : OKx - Abnormally status for download : NGx 3.5.
4.2. White Balance Adjustment 4.3. Magic Motion Remote control test 4.2.1. Overview - Dogle Ready (1) Equipment : RF Remote control for test, IR-KEY-Code Remote control for test (2) You must confirm the battery power of RF-Remote control before test(recommend that change the battery per every lot) (3) Sequence (test) 1) if you select the "Start(Wheel)" key on the Adjustment remote control, you can pairing with the TV SET.
4.5. HDMI ARC Function Inspection 4.6. Wi-Fi Test (1) Test equipment - Optic Receiver Speaker - MSHG-600 (SW: 1220 ↑) - HDMI Cable (for 1.4 version) Step 1) Turn on TV Step 2) Select Network Connection option in Network Menu. (2) Test method 1) Insert the HDMI Cable to the HDMI ARC port from the master equipment (HDMI1) Step 3) Select Start Connection button in Network Connection.
5. Audio 4.8. Option selection per country 4.8.1. Overview - Option selection is only done for models in Non-EU 4.8.2. Method (1) Press ADJ key on the Adj. R/C, then select Country Group Meun (2) Depending on destination, select Country Group Code 04 or Country Group EU then on the lower Country option, select US, CA, MX. Selection is done using +, - or ►◄ key. 4.10. Ship-out mode check(In-stop) Item Min Typ Max Unit 9 10 12 W 1.
TROUBLE SHOOTING GUIDE IC2407 IC2407 P2400 PIN #12 Check STEP-UP DC-DC conv. IC2406 Check backlight 24V (P2400 #1~#5) P102(#27~#30) 12V IC2408 12V output IC2408 P102(#15,#16) Copyright © LG Electronics. Inc. All rights reserved.
1. Check tuner(TU6401 #5 #32 ) Power 3.3V 2. Check IC 2405 output voltage Replace IC2405 1. Check tuner(TU6401 #7)Power 1.8V 2. Check IC6403 output voltage(1.8V) Replace IC6403 Check Tuner(TU6401) I2C signal #3 # 4 #34 #35 Check Tuner(TU6406) DATA, CLK, SYN, VAL Copyright © LG Electronics. Inc. All rights reserved.
Check ADAPTER output or replace ADAPTER Check signal from IC8101 P5400 output #1 #2 #3 #4 Check signal from IC105 SCL / SDA R5402 / R5403 Copyright © LG Electronics. Inc. All rights reserved.
BLOCK DIAGRAM Copyright © LG Electronics. Inc. All rights reserved.
EXPLODED VIEW IMPORTANT SAFETY NOTICE 122 A2 501 531 300 510 511 301 A31 200 571 801 570 800 900 LV1 910 540 521 401 120 400 Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and EXPLODED VIEW. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
120813 LCD-TV EAX65085301 VDD3V3 IC105 LGE2122[A2_M13] 20120813 Delete needless port R195 10K AL9 AJ12 20120813 LCD-TV X100 27MHz X-TAL_1 1 EMMC_CLK R168 10K C114-*1 2.7pF 50V ATSC_2.7pF DVB_1pF C114 1.0pF 50V 20120813 LCD-TV GND_2 GND_1 AH10 OSCL0 X-TAL_2 2 JTDI U0RX JTDO U1TX JTRST U1RX OSDA0 POWE OSCL0 DVB_1pF C115-*1 C115 2.7pF 1.0pF 50V 50V ATSC_2.
EAX65085301 AVDD_33SB IC500 +3.5V_ST_WAKE AP2121N-3.3TRE1 VIN 3 2 VOUT 1 GND +3.3V_NORMAL 60mA L501 BLM18PG121SN1D CI_ADDR[0-14] C512 1uF 10V C510 0.1uF 16V VDD3V3 CI_ADDR[0] CI_ADDR[1] POWER_ON/OFF1 CI_ADDR[2] TP500 CI_ADDR[3] 20120813 LCD-TV DECAP FOR SOC (HIDDEN - UCC) C505 10uF C503 10uF DECAP FOR SOC Rework (BOTTOM) C507 0.1uF CI_ADDR[4] C508 2.2uF CI_ADDR[5] +3.5V_ST +3.5V_ST_WAKE CI_ADDR[6] LAN_JACK_POWER CI_ADDR[7] CI_ADDR[8] +1.2V_MTK_CORE +3.5V_ST_WAKE S C509 0.
eMMC I/F +3.
EAX65085301 20120824 CJ.LIM MHL OPTION -> APPLY 20120813 LCD-TV Delete LDO (3.3 to 1.2) Use +1.23V_D_Demod 1.2V_MHL +1.23V_D_Demod 20120914 CJLIM Delete straight jack HP OUT USB Interface L3302 BLM18PG121SN1D USB1 HDMI NORMAL 5V_HDMI_1_SOC Close to SIL1292 VA3310 ADLC 5S 02 015 OPT OCP USB1 R4327 10K OPT HP_ROUT JK4303 KJA-UB-0-0037 R4323 10K 20 8 2 7 OUT_3 R R3701 1K HP_ROUT 1 C4300 0.1uF 16V HP_DET C331 0.22uF 16V DETECT 3 L 4 IN_2 EN VA3700 5.
EAX65085301 L5404-*1 10.0uH Audio_Coil_TAIYO NRS6045T100MMGK 50V 2ND : 0TR387500AA C5416 L5401 BLM18PG121SN1D AUD_MASTER_CLK AGND_PLL 1 VDD_PLL 2 DGND_PLL 3 GND 4 DGND 5 DVDD 6 SDATA 7 WCK 8 BCK SDA 100 PVDD1B PVDD1A OUT1A 18 19 20 OUT2B PVDD2B PVDD2A 17 PGND2B SPK_L+ C6108 10pF 50V OUTR 1 14 2 13 12 3 +INL C6109 180pF 2012.10.
DDR MAIN 1.5V IC2407 C2455 0.1uF +1.5V_DDR 2 3 GND_2 BOOT 1 VIN_2 GND_1 THERMAL 17 12 PH_3 11 PH_2 L2411 2.2uH +3.3V_NORMAL NR5040T2R2N PH_1 10 IC2403 SS/TR TPS54319TRE 9 3A 4 C2456 10uF 10V C2450 R2456 39K 1/10W 1% 3.3K -> 1K (threshold voltage up) C2451 10uF 10V C2454 10uF 10V C2457 0.1uF 16V C2447 10uF 10V 0.01uF 50V 20120913 CJLIM R2432 1/16W 330K 5% 1/16W 5% C2452 100pF 50V +3.3V_NORMAL WLED_ENABLE OPT R8808 3.3K R8813 C 6.8K +3.
EAX65085301 CI TS INPUT CI TS OUTPUT Close to MT5369 Close to CI Slot MT5398_TS_IN[0-7] AR900 MT5398_TS_IN[0] MT5398_TS_IN[1] 47 CI CI_TS_DATA[2] MT5398_TS_IN[3] READY FOR FILTER (EMI) 47 CI AR901 R610 51K SC_ID C600 220pF 50V OPT 0 1/10W 5% SC_ID_SOC 1/16W 1% EU CI_MDI[1] CI_MDI[2] CI_MDI[3] CI_TS_DATA[4] MT5398_TS_OUT[4] CI_TS_DATA[5] MT5398_TS_OUT[5] CI_MDI[5] MT5398_TS_IN[6] CI_TS_DATA[6] MT5398_TS_OUT[6] CI_MDI[6] CI_TS_DATA[7] MT5398_TS_OUT[7] EU R600 R615 75 1% OPT R734 7
EAX65085301 +3.3V_TU Tuner TU_Q/W_KR/BR/TW/CO/JP L6508 BLM18PG121SN1D TU_N/M/W_CN/TW/BR/CO R6508-*1 1K TU6405 TDSH-G501D(B) 2 SCL 3 SDA +B1[3.3V] NC_2 3 4 4 5 5 6 +B2[1.8] NC_3 IF_AGC DIF[P] DIF[N] 6 7 7 8 8 9 9 10 10 11 B1 11 A1 A1 B1 B1 A1 B2 RESET_TUNER SCL SCL SDA +B1[3.3V] SIF CVBS IF_AGC DIF[P] DIF[N] A1 4 5 5 7 7 CVBS 8 8 NC_1 9 9 NC_2 10 10 NC_3 11 11 +B3[3.3V] 12 12 +B4[1.