LG 50GA6400 Page 62 Service Manual Download

Page: 62 / 127

1. Trouble shooting - No power

Check stand-by Voltage.

P2301 3, 5pin : +3.5V_ST

Check Power connector

Main B/D 3.5V Line

Short Check

Check X3000 clock

32.768 KHz

Replace X3000

Check P2301 PWR_ON.

1pin : 3.3V

Replace Micom(IC3000) or Main board

Check Multi Voltage

P2301 9, 10, 16 pin : 24V , 13~15 pin : 12V

Replace Power Board

Check Inverter Control

P2301 2 pin : High

Check Power Board or Module

Check IC2300/1/2/3/4/5/6 Output Voltage

IC2300 : 1.8V, IC2301 : 3.3V

IC2302 : 1.5V, IC2303 : 2.5V

IC2304 : 5V, IC2305 : 0.9V, IC2306 : 1V

Replace 2300/1/2/3/4/5/6

Re-download Micom software.

Check Micom Voltage

IC3000 48 pin : +3.5V

Replace L2303

Check LVDS Power Voltage

Q2305 : 12V

Replace Q2305

Check X101 Clock

24 MHz

Replace X101

Replace Power board.

LGE Internal Use Only

Summary of Contents for 50GA6400

Page 1: ...ODEL 50GA6400 50GA6400 UD CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV SERVICE MANUAL North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only ...

Page 2: ...yright LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 11 EXPLODED VIEW 20 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...inals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed m...

Page 4: ...lectrostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent poten tial shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent...

Page 5: ...he solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replace...

Page 6: ... test method followed 2 Demanded other specification Safety UL CSA CE IEC specification EMC FCC ICES CE IEC specification Wireless Wireless HD Specification Option 4 General Specification No Item Specification Remark 1 Market 1 North America 2 Television System NTSC M ATSC 64 256 QAM 3 Program Coverage VHF 2 13 UHF 14 69 CATV 1 135 DTV 2 69 CADTV 1 135 4 Input Voltage AC 100 240V 50 60Hz 5 Availab...

Page 7: ... HDTV 1080P 14 1920 1080 33 71 29 97 74 176 HDTV 1080P 5 1 2 HDMI Input 1 PC DTV No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed HDMI PC 1 640 350 31 468 70 09 25 17 EGA Х 2 720 400 31 469 70 08 28 32 DOS O 3 640 480 31 469 59 94 25 17 VESA VGA O 4 800 600 37 879 60 31 40 00 VESA SVGA O 5 1024 768 48 363 60 00 65 00 VESA XGA O 6 1360 768 47 712 60 015 85 50 VESA WXGA O 7 1280 1024 63 9...

Page 8: ...48 50 Side by Side Top Bottom Checkerboard Single Frame Sequential Row Interleaving Column Interleaving 4 1920 1080p 27 00 24 000 74 25 Side by Side Top Bottom Checkerboard 5 1920 1080p 33 75 30 000 74 25 Side by Side Top Bottom Checkerboard 5 2 3 HDMI 1 3 3D supported mode manually 5 2 2 HDMI PC Input Input No Resolution H freq kHz V freq Hz Pixel clock MHz Remark 1 1024 768 48 363 60 004 65 000 ...

Page 9: ... 94 60 00 27 00 27 027 Secondary 16 9 Top Bottom 17 720 480p 31 469 31 50 59 94 60 00 27 00 27 027 Secondary 16 9 Side by Side Half 18 720 480p 62 938 63 00 59 94 60 00 54 00 54 054 Secondary 4 3 Frame Packing 19 720 480p 31 469 31 50 59 94 60 00 27 00 27 027 Secondary 4 3 Top Bottom 20 720 480p 31 469 31 50 59 94 60 00 27 00 27 027 Secondary 4 3 Side by Side Half 21 640 480p 62 938 63 00 59 94 60...

Page 10: ...t Input No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 1280 720 44 96 59 94 74 176 HDTV 720P Side by Side Top Bottom 2 1920 1080 33 75 60 00 74 25 HDTV 1080I Side by Side Top Bottom 3 1920 1080 33 72 59 94 74 176 HDTV 1080I Side by Side Top Bottom 4 1920 1080 67 500 60 148 50 HDTV 1080P Side by Side Top Bottom 5 1920 1080 67 432 59 94 148 352 HDTV 1080P Side by Side Top Botto...

Page 11: ...nt items 3 1 Final assembly adjustment EDID DDC check White Balance adjustment ADC Adjustment check RS 232C functionality check Factory Option setting per destination Ship out mode setting In Stop 3 2 Etc Ship out mode Tool option menu USB Download S W Update Option Service only 3 3 Automatic Adjustment 3 3 1 Overview ADC adjustment is needed to find the optimum black level and gain in Analog to D...

Page 12: ...st LAN card can be verified by using PING test 4 2 1 Adjustment Method Board 1 Connect LAN to the board and power on Default IP can be set to automatic setting When power ON IP can be automatically be achieved from the router 2 Press ADJ key in the adjustment remote control 3 Check Network status by pressing 13 ACAP PING TEST in EZ ADJUST If it operates properly it will show Network is operating p...

Page 13: ... 00 FC 70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 42 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 02 03 2E F1 48 90 22 20 05 04 03 02 01 23 09 57 10 07 78 03 0C 00 20 00 B8 2D 20 C0 0E 01 4F 00 FE 20 08 10 06 10 18 10 28 10 38 10 E3 05 03 01 02 3A 30 80 18 71 38 2D 40 58 2C 45 00 A0 5A 00 00 00 1E 40 01 1D 80 18 71 1C 16 20 58 2C 25 00 A0 5A 00 00 50 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 00 A0 5A 60 00...

Page 14: ...0 58 2C 25 00 A0 50 5A 00 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 60 00 A0 5A 00 00 00 1E 26 36 80 A0 70 38 1F 40 30 70 20 25 00 A0 5A 00 00 00 1A 00 00 00 00 00 00 AA HDMI 3 C S 42 9A EDID Block 0 Bytes 0 127 00H 7FH 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 01 17 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81...

Page 15: ...and begin a adjustment 5 When WB adjustment is completed with OK message check adjustment status of pre set mode Cool Medium Warm 6 Remove probe and RS 232C cable W B Adj must begin as start command wb 00 00 and finish as end command wb 00 ff and Adj offset if need 4 4 5 2 Manual adj method 1 Set TV in Adj mode using POWER ON 2 Zero Calibrate the probe of Color Analyzer then place it on the center...

Page 16: ...nto dark surrounding 2 Probe location Color Analyzer CA 210 probe should be within 10cm and perpendicular of the module surface 80 100 3 Aging time After Aging Start Keep the Power ON status during 5 Minutes In case of LCD Back light on should be checked using no signal or Full white pattern 4 4 6 Reference White Balance Adj coordinate and color temperature Luminance 204 Gray Standard color coordi...

Page 17: ...ed network 5 GND and Internal Pressure check 5 1 Method 1 GND Internal Pressure auto check preparation Check that Power Cord is fully inserted to the SET If loose re insert 2 Perform GND Internal Pressure auto check Unit fully inserted Power cord Antenna cable and A V arrive to the auto check process Connect D terminal to AV JACK TESTER Auto CONTROLLER GWS103 4 ON Perform GND TEST If NG Buzzer wil...

Page 18: ... 0 4Vrms 3 RGB PC 1 KHz sine wave signal 0 7Vrms 9 3D function test 9 1 Test equipment 1 Pattern Generator MSHG 600 or MSPG 6100 HDMI 1 4 support 2 Pattern HDMI mode model No 872 pattern No 83 9 2 Test method 1 Input 3D test signal as Fig 1 2 Press OK key as a 3D input OSD is shown 3 Check pattern as Fig2 without 3D glasses 3D mode without 3D glasses Fig 2 OK in 3D mode without 3D glasses 10 IR Bl...

Page 19: ...GB Success is displayed If ADC calibration is failure ADC RGB Fail is displayed 12 If ADC calibration is failure after recheck ADC pattern or condition retry calibration 12 2 Manual White balance Adjustment 12 2 1 Adj condition and cautionary items 1 Lighting condition in surrounding area surrounding lighting should be lower 10 lux Try to isolate adj area into dark surrounding 2 Probe location Col...

Page 20: ...y 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 Do not modify the original design without permission of manufacturer IMPORTANT SAFETY NOTICE A2 A7 A10 AG1 300 200 310 400 570 560 122 120 530 540 521 510 500 501 410 910 900 LV1 Set...

Page 21: ... U4 GPIO21 T6 GPIO20 T5 GPIO19 T4 GPIO18 R6 GPIO17 R5 GPIO16 R4 GPIO15 P6 GPIO14 P5 GPIO13 P4 GPIO12 N6 GPIO11 N5 GPIO10 N4 GPIO9 N3 GPIO8 M6 GPIO7 AC23 GPIO6 AC24 GPIO5 AE24 GPIO4 AD23 GPIO3 AE23 GPIO2 AC22 GPIO1 AD22 GPIO0 AE22 EB_CS3 GPIO64 M25 EB_CS2 GPIO79 M24 EB_CS1 GPIO78 M23 EB_CS0 GPIO77 N23 EB_OE_N T27 EB_WE_N T28 EB_WAIT U27 EB_BE_N1 U26 EB_BE_N0 U28 EB_ADDR17 GPIO84 J22 EB_ADDR16 GPIO8...

Page 22: ..._11 J13 GND_12 J14 GND_13 J15 GND_14 J16 GND_15 J17 GND_16 J18 GND_17 J19 GND_18 J20 GND_19 K7 GND_20 K12 GND_21 K13 GND_22 K14 GND_23 K15 GND_24 K16 GND_25 K17 GND_26 K18 GND_27 K19 GND_28 K20 GND_29 L7 GND_30 L12 GND_31 L13 GND_32 L14 GND_33 L15 GND_34 L16 GND_35 L17 GND_36 L18 GND_37 L19 GND_38 L21 GND_39 M7 GND_40 M12 GND_41 M13 GND_42 M14 GND_43 M15 GND_44 M16 GND_45 M17 GND_46 M18 GND_47 M19...

Page 23: ...HMR0ALRCK J2 AUD_HMR0ABCK J3 AUD_HMR0ASD4 K3 AUD_HMR0ASD3 H1 AUD_HMR0ASD2 H2 AUD_HMR0ASD1 H3 AUD_HMR0ASD0 J1 AUD_DAC1_LRCH G1 AUD_DAC1_SCK G2 AUD_DAC1_LRCK G3 AUD_FS25CLK B1 AUD_FS24CLK C1 AUD_FS23CLK A4 AUD_FS21CLK B4 AUD_FS20CLK C4 AUDCLK_OUT_SUB A2 AUD_DAC0_LRCK D1 AUD_DAC0_LRCH D2 AUD_DAC0_SCK E2 AUD_ADC_LRCH E1 AUD_ADC_SCK F1 AUD_ADC_LRCK F2 AUD_MIC_LRCH B2 AUD_MIC_SCK A3 AUD_MIC_LRCK C2 BB_T...

Page 24: ... 1uF VCC1 5V_DE M2_DDR_VREFCA M2_DDR_RESET_N M2_CLK M2_CLKN IC100 LG1152D B1 M0_DDR_A0 D18 M0_DDR_A1 E17 M0_DDR_A2 E18 M0_DDR_A3 E20 M0_DDR_A4 E16 M0_DDR_A5 D20 M0_DDR_A6 F16 M0_DDR_A7 F19 M0_DDR_A8 E15 M0_DDR_A9 D19 M0_DDR_A10 D14 M0_DDR_A11 E14 M0_DDR_A12 D17 M0_DDR_A13 F18 M0_DDR_A14 D16 M0_DDR_BA0 F20 M0_DDR_BA1 D15 M0_DDR_BA2 F17 M0_DDR_CLK A17 M0_DDR_CLKN A18 M0_DDR_CKE F15 M0_DDR_ODT F21 M0...

Page 25: ...ATA 0 7 R6205 10K OPT CI_TS_DATA 6 R6206 10K OPT CI_TS_DATA 4 CI_TS_SYNC C6200 0 1uF CI R6209 10K OPT CI_TS_DATA 2 CI_VS1 R6202 22 CI 5V_CI_ON R6203 22 CI R6200 22 OPT R6217 10K OPT CI_IN_TS_DATA 0 7 CI_ADDR 7 R6219 10K OPT 5V_CI_ON CI_ADDR 3 PCM_CE2 R6245 10K OPT CI_ADDR 13 5V_CI_ON R6212 0 CI R6214 100 CI R6246 10K OPT R6244 10K CI CI_ADDR 5 PCM_WAIT CI_ADDR 2 CI_ADDR 6 R6215 100 CI PCM_CE2 CI_I...

Page 26: ...R2364 8 2K 1 PD_24V R2365 1 5K 1 PD_24V 3 3V_NORMAL IC2300 AP7173 SPG 13 HF DIODES 3 VCC 2 PG 4 EN 1 IN 5 GND 6 SS 7 FB 8 OUT 9 EP IC2303 AP7173 SPG 13 HF DIODES 3 VCC 2 PG 4 EN 1 IN 5 GND 6 SS 7 FB 8 OUT 9 EP IC2302 TPS54319TRE 1 VIN_1 3 GND_1 7 COMP 9 SS TR 10 PH_1 11 PH_2 12 PH_3 13 BOOT 14 PWRGD 15 EN 16 VIN_3 5 AGND 8 RT CLK 6 VSENSE 4 GND_2 2 VIN_2 17 EP GND R2378 6 8K 1 16W 1 FRC3 IC2305 EA...

Page 27: ...5 2 22K MICOM_OLED_FRC R3005 1 56K MICOM_OLED_MAIN LED_R WOL WOW_POWER_ON R3014 1K 3 5V_ST R3011 10K MICOM_DEBUG P3000 12507WS 04L MICOM_DEBUG 1 2 3 4 5 MICOM_DEBUG MICOM_RESET SCART_MUTE IC3000 R5F100GEAFB 30 MICOM 1 P60 SCLA0 2 P61 SDAA0 3 P62 4 P63 5 P31 TI03 TO03 INTP4 6 P75 KR5 INTP9 SCK01 SCL01 7 P74 KR4 INTP8 SI01 SDA01 8 P73 KR3 SO01 9 P72 KR2 SO21 10 P71 KR1 SI21 SDA21 11 P70 KR0 SCK21 SC...

Page 28: ...X1N 26 R4X1P 27 R4X2N 28 R4X2P 29 VDD12_2 30 DSDA0 31 DSCL0 32 CBUS_HPD0 33 R0PWR5V 34 DSDA1 35 DSCL1 36 CBUS_HPD1 37 R1PWR5V 38 DSDA3 39 DSCL3 40 CBUS_HPD3 41 R3PWR5V 42 DSDA4 43 DSCL4 44 CBUS_HPD4 45 R4PWR5V 46 DSDA5 VGA 47 DSCL5 VGA 48 R5PWR5V VGA 49 SBVCC5 50 PWRMUX_OUT 51 LPSBV 52 WKUP 53 CD_SENSE0 54 CD_SENSE1 55 GPIO2 56 CD_SENSE3 57 CD SENSE4 58 GPIO0 59 GPIO1 60 TPWR 61 RESET_N 62 CSDA 63...

Page 29: ...ESD_LG1152 D3800 2 5 6V ESD_LG1152 JK3801 KJA PH 1 0177 2 3 M3_DETECT 4 M4 5 M5_GND 1 M1 6 M6 JK3800 KJA PH 1 0177 1 3 M3_DETECT 4 M4 5 M5_GND 1 M1 6 M6 D3807 5 6V OPT C3804 18pF 50V ESD_MTK D3806 5 6V OPT C3805 18pF 50V ESD_MTK VA3700 2 5 6V ESD_LG1152_HP_OUT HP_LOUT HP_DET VA3700 1 5 6V ESD_MTK_HP_OUT R3700 10K HP_OUT HP_ROUT 3 3V_NORMAL VA3700 5 6V OPT JK3700 KJA PH 0 0177 EAG61030001 HP_JK 3 D...

Page 30: ...MC 5M 02 200L 200pF D4100 2 5 6V ESD_LG1152 ADMC 5M 02 200L 200pF P4102 12507WR 08L NON_EYE_Q_8P 1 2 3 4 5 6 7 8 9 LOGO_LIGHT 3 5V_ST R4104 10K OPT Q4102 MMBT3904 NXP LOGO_LIGHT E B C R4108 33 LOGO_LIGHT R4105 10K LOGO_LIGHT R4107 33 LOGO_LIGHT C4103 0 1uF 16V LOGO_LIGHT R4106 1K LOGO_LIGHT R4100 10K LED_R R4102 100 WIFI_DM L4101 BLM18PG121SN1D 120 ohm M_REMOTE_RTS M_REMOTE_TX WOL WOW_POWER_ON M_R...

Page 31: ...M 1 23 VDD33_2 24 SCL SMBCLK CFG_SEL 0 25 HS_IND CFG_SEL 1 26 RESET_N 27 VBUS_DET 28 SUSP_IND LOCAL_PWR NON_REM 0 29 VDDA33_3 30 USBDM_UP 31 USBDP_UP 32 XTALOUT 5 VDDA33_1 8 NC_3 6 NC_1 4 USBDP_DN 2 2 USBDP_DN 1 33 XTALIN CLKIN 34 PLLFILT 35 RBIAS 36 VDD33_3 37 EP VSS 3 3V_NORMAL C4203 0 1uF USB_OCD1 R4204 100K 3 3V_NORMAL 3 3V_NORMAL C4213 0 1uF C4202 0 1uF R4202 100K R4200 100K USB_DP2 USB_DM1 R...

Page 32: ...1 0 1uF 16V 12V L4307 3 6uH C4341 4 7uF 10V R4342 10K 5 L4306 BLM18PG121SN1D USB_CTL3 C4325 10uF 16V C4342 100pF 50V USB_DCDC_SN1104041 IC4306 1 BD86180MUV DEV_USB_DCDC_BD86180 3 SS 2 COMP 4 RT 1 EN 6 CTL1 5 CTL2 7 FLG2 8 FLG1 9 USB_OUT2 10 GND_1 11 GND_2 12 USB_OUT1 13 USB_IN_1 14 USB_IN_2 15 USB_IN_3 16 SW_1 17 SW_2 18 BST 19 PGND_1 20 PGND_2 21 VIN_1 22 VIN_2 23 GND_3 24 VREG 25 EP GND C4340 47...

Page 33: ...D EU R4600 75 EU DTV MNT_R_OUT SC_FB SC_R R4606 47K EU C4606 0 1uF 50V EU R4601 10K EU R4608 0 OPT D4611 5 6V OPT D4607 5 6V OPT D4606 5 6V OPT D4605 5 6V OPT D4608 5 6V OPT D4601 5 6V OPT D4601 1 5 6V ESD_MTK_SCART 200pF D4605 2 5 6V ESD_LG1152_SCART 200pF D4606 2 5 6V ESD_LG1152_SCART 200pF D4601 2 5 6V ESD_LG1152_SCART 200pF D4611 2 5 6V ESD_LG1152_SCART 200pF D4600 20V OPT D4600 2 20V ESD_LG11...

Page 34: ...N_C D4 GN_A C5003 0 01uF 50V EPHY_RDP LAN_JACK_POWER D5000 5 5V OPT D5002 5 5V OPT D5003 5 5V OPT D5001 5 5V OPT D5001 2 5 5V ADUC 5S 02 0R5L ESD_LG1152 D5003 2 5 5V ADUC 5S 02 0R5L ESD_LG1152 D5002 2 5 5V ADUC 5S 02 0R5L ESD_LG1152 D5000 2 5 5V ADUC 5S 02 0R5L ESD_LG1152 D5003 1 ADUC 5S 02 0R5L ESD_MTK D5000 1 ADUC 5S 02 0R5L ESD_MTK D5002 1 ADUC 5S 02 0R5L ESD_MTK D5001 1 ADUC 5S 02 0R5L ESD_MTK...

Page 35: ...SET 3 MDI 0 7 AVDD33_1 9 RXD 0 10 RXD 1 11 RXD 2 INTB 12 RXD 3 CLK_CTL 13 RXC 14 DVDD33 15 TXC 16 TXD 0 17 TXD 1 18 TXD 2 19 TXD 3 20 TXEN 21 PHYRSTB 22 MDC 23 MDIO 24 LED0 PHYAD 0 PMEB 25 LED1 PHYAD 1 26 CRS CRS_DV 27 COL 28 RXER FXEN 29 DVDD10OUT 30 AVDD33_2 31 CKXTAL1 32 CKXTAL2 5 MDI 1 8 RXDV 6 MDI 1 4 MDI 0 2 AVDD10OUT 33 EP 3 3V_WOL 3 3V_WOL 3 3V_WOL 3 3V_WOL 3 3V_WOL WOL WOW_POWER_ON L5200 ...

Page 36: ... 0 1uF C5413 16V AUD_LRCH L5401 BLM18PG121SN1D 24V_AMP SPK_R C5431 390pF 50V 24V_AMP D5403 100V 1N4148W OPT C5414 10uF 10V AMP_RESET_N R5408 12 C5433 1uF 25V L5404 NRS6045T100MMGK 10 0uH SPK_L C5435 0 47uF 50V C5428 1uF 25V I2C_SCL1 C5409 10uF 10V OPT SPK_L P5400 WAFER ANGLE 1 2 3 4 AMP_MUTE 0 1uF C5439 50V C5417 22000pF 50V R5400 10K R5410 12 SPK_R 0 1uF C5412 16V 24V C5410 10uF 10V OPT 0 1uF C54...

Page 37: ...U L6000 EU R6002 470K OPT Q6000 MMBT3904 NXP EU E B C R6011 2 2K EU DTV MNT_R_OUT C6003 33pF EU DTV MNT_L_OUT Q6001 MMBT3904 NXP EU E B C DTV MNT_L_OUT R6004 33K EU C6002 6800pF OPT C6007 6800pF OPT C6008 1uF 25V EU C6000 1uF 25V EU IC6000 AZ4580MTR E1 EU 3 IN1 2 IN1 4 VEE 1 OUT1 5 IN2 6 IN2 7 OUT2 8 VCC SCART_AMP_R_FB SCART_AMP_L_FB Q6002 MMBT3906 NXP EU E B C R6003 10K EU R6001 10K EU R6012 4 7K...

Page 38: ...MBOL MARK OF THE SCHEMETIC Q6201 AO3407A CI G D S 5V_CI_ON C6207 4 7uF 10V OPT R6218 10K CI 5V_NORMAL C6202 0 1uF 16V OPT R6242 2 2K CI R6221 10K OPT PCM_5V_CTL R6248 10K CI R6223 4 7K CI R6241 22K CI Q6200 MMBT3904 NXP CI E B C C6210 1uF 25V OPT C6210 1 1uF 25V CI_MTK CI POWER ENABLE CONTROL 62 CI SLOT 2011 10 31 Option FOR MTK Option FOR LG1152 Copyright ⓒ 2013 LG Electronics Inc All right reser...

Page 39: ...OUT_MAIN R6400 4 7K HP_OUT R6405 1K HP_OUT C6406 2 2uF 10V HP_OUT HP_LOUT Q6400 MMBT3904 NXP E B C HP_LOUT_MAIN R6401 OPT R6402 4 7K HP_OUT 3 3V_NORMAL C6404 2 2uF 10V HP_OUT C6407 2 2uF 10V HP_OUT C6403 10uF 10V HP_OUT HP_AMP_MUTE R6406 10 1 16W 5 R6407 10 1 16W 5 C6408 0 47uF 16V HP_OUT C6409 0 47uF 16V HP_OUT IC6400 TPA6132A2 EAN60724701 HP_OUT 3 INR 2 INL 4 INR 1 INL 5 OUTR 6 G0 7 G1 8 HPVSS 9...

Page 40: ... 3V_DEMOD 33 N C_8 34 SD_SCL 35 SD_SDA A1 A1 B1 B1 TU6503 TDSQ G051D 1 N C_1 2 RESET 3 SCL 4 SDA 5 3 3V_TUNER 6 SIF 7 1 8V_TUNER 8 CVBS 9 T C_IF_AGC 10 T C_DIF P 11 T C_DIF N 12 N C_2 13 N C_3 14 N C_4 15 GND_1 16 ERROR 17 SYNC 18 VALID 19 MCLK 20 D0 21 D1 22 D2 23 D3 24 D4 25 D5 26 D6 27 D7 28 GND_2 29 GND_3 30 1 23V_S2_DEMOD 31 S2_RESET 38 SHIELD 32 3 3V_S2_DEMOD 33 S2_F22_OUTPUT 34 S2_SCL 35 S2...

Page 41: ... SP 7850_33 LNB R6900 2 2K 1W LNB D6901 30V MBR230LSFT1G LNB I2C_SDA4 C6909 10uF 25V LNB A_GND C6908 0 1uF LNB D6904 40V LNB_SMAB34 A_GND A_GND C6902 0 22uF 25V LNB D6903 40V LNB_SMAB34 R6904 0 R6902 33 LNB A_GND C6912 0 1uF LNB D6902 30V LNB C6900 18pF LNB C6901 33pF LNB IC6900 A8303SESTR T DEV_LNB_A8303 1 VCP 3 NC_1 7 SCL 9 ADD 10 TONECTRL 11 TCAP 12 ISET 13 VREG 14 GND 15 VIN 16 LX 17 GNDLX 18 ...

Page 42: ... 31 RB1P 32 RB2N 33 RB2P 34 GND 35 RBCLKN 36 RBCLKP 37 GND 38 RB3N 39 RB3P 40 RB4N 41 RB4P 42 GND 43 GND 44 GND 45 GND 46 GND 47 NC 48 VLCD 49 VLCD 50 VLCD 51 VLCD 52 GND P7101 FI RE41S HF J R1500 G3S 1 NC 2 NC 3 NC 4 NC 5 NC 6 NC 7 NC 8 NC 9 GND 10 RC0N 11 RC0P 12 RC1N 13 RC1P 14 RC2N 15 RC2P 16 GND 17 RCCLKN 18 RCCLKP 19 GND 20 RC3N 21 RC3P 22 RC4N 23 RC4P 24 GND 25 GND 26 RD0N 27 RD0P 28 RD1N 2...

Page 43: ... IN THE SYMBOL MARK OF THE SCHEMETIC I2C_SCL1 L DIM0_SCLK R7601 10K L DIM_OUT 3 3V_NORMAL L DIM0_MOSI R7607 4 7K L DIM_OUT R7606 33 L DIM_OUT P7600 12507WR 08L L DIM_OUT 1 2 3 4 5 6 7 8 9 I2C_SDA1 L DIM0_VS R7600 10K OPT AR7600 33 1 16W L DIM_OUT R7602 0 L DIM_OUT R7603 0 L DIM_OUT LOCAL DIMMING To LED DRIVER 76 LOCAL DIMMING 2012 02 22 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only f...

Page 44: ...0 RSTN K5 VCCQ_1 C6 VCCQ_2 M4 VCCQ_3 N4 VCCQ_4 P3 VCCQ_5 P5 VCC_1 E6 VCC_2 F5 VCC_3 J10 VCC_4 K9 VDDI C2 VSS_1 E7 VSS_2 G5 VSS_3 H10 VSS_4 K8 VSSQ_1 C4 VSSQ_2 N2 VSSQ_3 N5 VSSQ_4 P4 VSSQ_5 P6 NC_1 A1 NC_2 A2 NC_3 A8 NC_4 A9 NC_5 A10 NC_6 A11 NC_7 A12 NC_8 A13 NC_9 A14 NC_10 B1 NC_11 B7 NC_12 B8 NC_13 B9 NC_14 B10 NC_15 B11 NC_16 B12 NC_17 B13 NC_18 B14 NC_19 C1 NC_20 C3 NC_22 C7 NC_23 C8 NC_24 C9 ...

Page 45: ...TPIN_4 E1 TESTPIN_5 E2 TESTPIN_6 E3 TESTPIN_7 F1 TESTPIN_8 F2 M0_SCLK C17 M0_MOSI D16 M1_SCLK D17 M1_MOSI E15 M2_SCLK E14 M2_MOSI E13 M3_SCLK E12 M3_MOSI F13 SPI_CK T9 SPI_CZ U10 SPI_DI U9 SPI_DO T10 TXA0P GCLK6 BLUE 7 C8 TXA0N GCLK5 BLUE 6 C9 TXA1P OPT_N LK3 BLUE 9 B8 TXA1N FLK BLUE 8 A8 TXA2P GREEN 1 A7 TXA2N OPT_P LK2 GREEN 0 B7 TXACLKP RLV0N GREEN 3 C6 TXACLKN RLV0P GREEN 2 C7 TXA3P RLV1N GREE...

Page 46: ...DDR3_DQSUB DDR3_DQU 6 FRC_DQSUB R9719 22 FRC_DMU DDR3_A 7 DDR3_A 4 R9707 56 DDR3_DQSL 1 5V_FRC_DDR C9711 0 1uF DDR3_DQU 5 C9703 22uF 10V R9711 22 DDR3_DQL 3 DDR3_BA0 DDR3_DQL 5 FRC_A 3 AR9708 22 DDR3_DQSUB DDR3_RASB FRC_A 10 MVREFCA DDR3_DQU 7 R9715 22 DDR3_A 6 FRC_DQU 4 R9700 1K 1 R9701 1K 1 FRC_BA1 1 5V_FRC_DDR FRC_DQSU DDR3_DML FRC_CASB FRC_MCLKB FRC_DQL 7 R9705 150 OPT DDR3_A 9 C9707 0 1uF FRC...

Page 47: ...10V POWER_ON OFF2_2 R9806 10K OPT 12V C9801 10uF 16V R9807 10K 1 R9805 10K L9801 BLM18PG121SN1D C9805 1uF 10V IC9801 TPS54327DDAR 3 VREG5 2 VFB 4 SS 1 EN 5 GND 6 SW 7 VBST 8 VIN 9 EP GND C9811 22uF 10V C9809 0 1uF 16V POWER_ON OFF2_2 1 26V_FRC R9801 6 8K 1 R9803 1K 1 R9808 12K 1 3 3V_FRC R9802 33K 1 R9804 220 1 C9813 22uF 10V OPT C9807 3300pF 50V L9803 3 6uH NR8040T3R6N C9808 3300pF 50V L9804 3 6u...

Page 48: ...IR_Bla D11002 IR_Bla IC11002 MC96FR3128R IR_Bla 3 XOUT 2 XIN 4 P20 RESETB 1 VSS 6 P11 KS9 MISO1 5 P10 KS8 MOSI1 7 P12 KS10 INT0 8 P13 KS11 INT1 9 P14 KS12 SS1 INT2 10 P15 KS13 XCK1 INT3 11 P16 KS14 MOSI0 12 P17 KS15 MISO0 13 P30 SS0 EC2 EXTREF 14 P31 XCK0 SENSOR 15 P36 INT0 XCK0 16 P37 INT1 SS0 17 P00 KS0 T0 18 P01 KS1 T1 PWM1 19 P02 KS2 T2 20 P03 KS3 T3 PWM3 21 P04 KS4 EC0 22 P05 KS5 EC3 23 P06 K...

Page 49: ......

Page 50: ...LCD TV Repair Guide 13 years New Models Applicable Model XXGA6400 UD XXGA7900 UA Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 52: ... 3 4 Micom for Key IR sensing HDMI switch 4 1 Audio AMP 10W GA64 79 IR Blaster Local Key IR LOGO Motion assy Front Spk 2 Main processor_analog LG1152A 5 FRC IC DDR Memory 6 5 6 Wifi 3 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ...Switch HDMI1 4 L9 LG1152A USB1 USB2 USB3 USB HUB PHY RMII LAN Qwerty R Q Remote_R TX Audio AMP OPTIC SPK SPDIF I2S 16 DDR 16 DDR 256MB 4 1600 128MB 1 1600 8 eMMC 8GB 1 Built in WiFi FRC LG7303 HS_LVDS 2Link CHB_DATA L9 Block diagram Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ...R Vertical MC IPC Scaler PE OSD VCR LVDS H 264 Encoder SD upto 480p 12 PHY 3 port USB2 0 Host x3 DDR3 PHY DDR3 x16 3 Ethernet MAC eMMC Controller CPU Dual C A9 1GHz Graphic Engine 2D VG 3D Open ES2 0 Audio 10 data 1 en 5 gc 4 val err clk sop 8 data I2C I2C 6 gbb l9da I2C Digital Audio Output LVDS LVDS Video LVDS Video OSD LVDS Audio PLL w DCO I2S mono 3 lrck lrch sck I2C SW SW 3D or UD Data bridge...

Page 55: ...7Mhz 2 port USB PHY 1 port USB PHY 30 48Mhz 30 48 Mhz i_core800_clk i_core320_clk i_m01_ddrclk i_m2_ddrclk u_crg Clock Divide Reset generation w test logic Clock Divide Reset generation w test logic Clock Divide Reset generation w test logic Clock Divide Reset generation w test logic Clock Divide Reset generation w test logic USB controller About 220 internally generated clocks SSC setting 0xFD300...

Page 56: ...C CH6 Main IF_AGC IF N P Main SoC IFAGC ATSC ADC_I_INN P SCL DA6_3 3V L9 B1 TU_RESET TU_SIF TU_CVBS L9 Block diagram Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ... 1 Phone JACK _Yellow GPIO18 Y2 PB2 PR2_IN COMP1_DET COMP1_Y Pb Pr Component 1 Phone JACK _Green BB_TP CHB DAC AAD _DATA HSR_P M AV1_CVBS_DET COMP1_DET SPDIF GPIO4 L9 Block diagram Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ...A SCL MICOM AUD_SCK LRCK LRCH AMP_RESET AMP_MUTE MAIN 4P wafer L9 LG1152 TU_SIF NTP7500 0x54 NTP7500 0x54 L9 Block diagram COMP_L R_IN Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 59: ...I_HPD_2 5V_HDMI_2 HDMI HDMI 3 3 HDMI_HPD_3 5V_HDMI_3 HDMI HDMI 4 4 HDMI_HPD_4 5V_HDMI_4 L9_B1 Main SoC IC100 LG1152D B1 TMDS Link 8bits TMDS Link 8bits TMDS Link 8bits TMDS Link 8bits DDC_I2C 2bits DDC_I2C 2bits DDC_I2C 2bits DDC_I2C 2bits MICOM IC3000 R5F100GEAFB CEC_REMOTE L9 Block diagram Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal ...

Page 60: ...2 USB_DM1 DP1 L9 B1 USB_DM2 DP2 USB1 USB_DM1 DP1 USB HUB USB_HUB_IC_IN_DP DM USB_DM2 DP2 L9 Block diagram Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ...IC11002 MC96FR3128 IR OUT I2C_SDA3 SCL2 GPIO56 SDA2 GPIO71 IR_B_RESET SPI_DI0 GPIO39 SPI_DO0 GPIO38 SPI_SCLK0 GPIO37 SPI_CS0 GPIO36 IRB_SPI_MOSI IRB_SPI_MISO IRB_SPI_CK IRB_SPI_SS Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...in High Check Power Board or Module Check IC2300 1 2 3 4 5 6 Output Voltage IC2300 1 8V IC2301 3 3V IC2302 1 5V IC2303 2 5V IC2304 5V IC2305 0 9V IC2306 1V Replace 2300 1 2 3 4 5 6 Re download Micom software Check Micom Voltage IC3000 48 pin 3 5V Replace L2303 Check LVDS Power Voltage Q2305 12V Replace Q2305 ok ok ok ok ok ok ok ok No No No No No No No No No Check X101 Clock 24 MHz Replace X101 ok...

Page 63: ...ce IC101 Chip Replace IC101 ok ok ok ok No No No No Bad Tuner Replace Tuner 2 Trouble shooting No video Digital TV video Check L9 D chip IC100 Chip Replace IC100 or Main Board No ok Check DIF at destination C116 C117 Bad Capacitor Replace Capacitor ok No Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 64: ...in 1 8V Replace IC6503 ok No No Check CVBS buffer Q6501 Emitter No Bad TR Replace TR ok Check CVBS signal at destination R571 C549 No Bad Resistor or Capacitor Replace Resistor or Capacitor Check L9 Ace IC101 Chip Replace IC101 No Check L9 D chip IC100 Chip Replace IC100 or Main Board No ok ok Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Interna...

Page 65: ...Line AV1_CVBS_IN L504 ok ok ok No Replace Jack ok Check CVBS_DET Signal AV1_CVBS_DET R3810 Replace R3810 or Jack No No Check L9 Ace IC101 Chip Replace LG1152A IC101 or Main Board ok No Check L9 D chip IC100 Chip Replace IC100 or Main Board Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ...l Line ok ok ok No Replace Jack Check COMP1_DET Signal Replace R3806 or Jack No ok No Check L9 Ace IC101 Chip Replace IC101 5 Trouble shooting No video Component ok No Check L9 D chip IC100 Chip Replace IC100 or Main Board Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 67: ...K3200 JK3201 JK3203 ok ok ok No No Replace Coil ok Replace Jack Check HDMI Signal output of HDMI Switch IC3201 Replace the defective IC No Check L3200 3 3V Replace the defective IC No OK ok No Check L9 Ace IC101 Replace IC 101 ok No Check L9 D chip IC100 Replace IC 100 or Main Board Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 68: ...ggle the Menu Check AMP IC IC5400 Power 24V 3 3V No Check BEAD Regulator L5400 L5401 L2304 Check LG1152 I2S Output R543 R545 No Check signal line Or replace LG1152 IC100 Check AUDIO_MASTER_CLK R542 No Replace LG1152 IC100 or Main Board ok Check AMP I2C Line R5402 R5403 No Check signal line Or replace LG1152 IC100 Check AMP IC RESET FAULT PIN MUTE low is mute high is un mute Check reset mute signal...

Page 69: ...wer L6503 ok ok ok No No Bad Tuner Replace Tuner No Replace L6503 8 Trouble shooting No audio Digital TV audio Follow procedure 8 All source audio trouble shooting guide ok Replace IC6503 No Replace L6500 ok Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 70: ...ce Tuner Follow procedure 8 All source audio trouble shooting guide ok No Replace TR Check RF Cable Signal Check Tuner 1 8V Power L6500 Check IC6503 Check Tuner 3 3V Power L6503 ok ok ok No No Replace L6503 Replace IC6503 No Replace L6500 ok Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 71: ...al L508 L511 ok Check AV1_L AV1_R path Including L508 L511 to LG1152A IC101 No Replace component No Replace JK3800 Follow procedure 8 All source audio trouble shooting guide ok AV COMPO NENT Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 72: ...IF_OUT Signal 3 3V ok No Check R630 C630 C3615 Replace LG1152D IC100 11 Trouble shooting No audio SPDIF ok Replace JK3602 SPDIF Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 73: ... at Bead or Jack Y Replace one of IC4303 USB1 or IC4306 USB2 3 and then check N Maybe IC4200 USB1 2 or IC100 USB1 2 3 has problems Replace It Exception USB power could be disabled by inrushing current In this case remove the device and try to reboot the TV AC power off on Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 74: ... Check LAN Cable Recheck LAN Cable N Y Check MAC Address Replace Main B D N Y Check RMII Rx Tx Signal Line R 5206 R 5207 R 108 R 106 N Replace R 5206 R 5207 R 108 R 106 Y Check L9 D chip IC 100 N Replace IC 100 or Main Board Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 75: ... Check the Tool Option 4 Y Check the Tool Option 5 N Correct the Tool Option2 N Correct the Tool Option3 N Correct the Tool Option4 N Correct the Tool Option5 Y Check the Tool Option 6 N Correct the Tool Option6 Y Check the Tool Option 7 N Correct the Tool Option7 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 76: ...n The latest S W put in the LG DTV folder of USB Memory USB connects to USB jack for service The SW update is finished please check new SW version by in start menu Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 77: ...tion PCBs 1 Main PCB 2 LOGO IR PCB 3 RF Motion ASSY 4 Wi Fi ASSY 5 PSU PCBs XXGA6400 UD 1 5 4 3 2 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 78: ...n sub PCB XXGA6400 UD Series RF MOTION ASSY To Main SPK unit 1 LOGO IR PCB LOGO KEY IR PCB WIFI ASSY Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 79: ...g power auto on off 40 8 C Audio error No audio Normal video 41 9 Wrecked audio discontinuation noise 42 10 D Function error Remote control Soft Touch Key checking 43 Qwerty Remote Motion operating checking 44 11 12 Wi Fi operating checking 45 13 External device recognition error 46 14 E Noise Circuit noise mechanical noise 47 15 F Exterior error Exterior defect 48 First of all Check whether there...

Page 80: ...k record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date 2013 01 30 LCD TV Error symptom A Video error No video Normal audio A4 A1 A2 A7 A3 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS Cable Speaker Cable ...

Page 81: ...ce MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A4 Established date Revised date LCD TV Error symptom 35 2012 01 16 2013 01 30 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 82: ...ng Normal Picture Y N Y Close Y Close By using Digital signal level meter By using Diagnostics menu on OSD Setting Set up Manual Tuning Check the Signal Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y Close N A7 Standard Repair Process Established date Revised date LCD TV Error symptom 36 N...

Page 83: ...nd cable Y External device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A9 N Y End Replace module Request repair for external device cable Color error Check Test pattern A12 A10 Standard Repair Process Established date Revised date LCD TV Error symptom 37 2012 01 16 2013 01 30 Copyright ⓒ 2013 LG Electronics Inc All...

Page 84: ...MI DVI by connecting Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Component error RGB error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replac...

Page 85: ...of Power B D N Y Normal voltage Replace Main B D N Y OK Replace Main B D N Y Normal Check ST BY 3 5V Replace Power B D N Y Normal voltage Replace Power B D Y A17 A18 A19 A4 Standard Repair Process Established date Revised date LCD TV Error symptom 39 Stand By Red or Turn Off Operating Turn Off Close 2012 01 16 2013 01 30 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and ...

Page 86: ...E CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reservated Record POWEROFF_RECEND Power off by End of Recording POWEROFF_SWDOWN Power off by S W Download POWEROFF_UNKNOW...

Page 87: ...r parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A24 A25 Disconnection Established date Revised date LCD TV Error symptom Standard Repair Process 41 2012 01 16 2013 01 30 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 88: ...d check other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 24V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End Established da...

Page 89: ... R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A27 Normal Voltage Close N N Check 3 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A4 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A27 Replace Main B D Y A27 Standard Repair Process Established date Revised date LCD TV Error symptom 43 2012 01 16 Y ...

Page 90: ...or symptom 44 2012 01 16 Replace Qwerty Remote Turn off on the set and press the wheel Press the back key about 5sec Close If you conduct the loop at 3times change the Qwerty Remote Y Check the INSTART menu RF Receiver ver is 00 00 Y Check Repair RF assy connection N Down load the Firmware INSTART MENUÆ15 RF Remocon TestÆ3 Firmware download Y RF Receiver ver is 00 00 N Close A28 A7 A7 2013 01 30 C...

Page 91: ...k the Wi Fi wafer P4301 _1pin Standard Repair Process Established date Revised date LCD TV Error symptom 45 2012 01 16 Change the Wi Fi Assy Normal Voltage Close Y Y N Replace Main B D Wi Fi Mac value is NG N Close A29 A7 A7 A29 2013 01 30 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 92: ...vice cable HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date LCD TV Error symptom Standard Repair Process 46 2012 01 16 2013 01 30 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 93: ...n manual For models without any fix information provide the description OR Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise Established date Revised date LCD TV Error symptom Standard Repai...

Page 94: ...ontroller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date LCD TV Error symptom Standard Repair Process 48 2012 01 16 2013 01 30 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 95: ... TV Version checking method A7 7 Tuner Checking Part A8 8 A Video error _Vertical Horizontal bar residual image light spot LCD TV connection diagram A9 9 A Video error_ Color error Check Link Cable LVDS reconnection condition A10 10 Adjustment Test pattern ADJ Key A12 11 Appendix Defected Type caused by T Con Inverter Module Exchange T Con Board 1 A 1 5 12 Exchange T Con Board 2 A 2 5 13 Exchange ...

Page 96: ...king method A22 20 C Audio error_ No audio Normal video Checking method in menu when there is no audio A24 22 Voltage and speaker checking method when there is no audio A25 22 D Function error Remote controller operation checking method A27 23 Motion Remote operation checking method A28 24 Wifi operation checking method A29 25 E Etc Tool option changing method A30 Continued from previous page Copy...

Page 97: ...ght with naked eye A Video error_No video Normal audio After turning on the power and disassembling the case check with the naked eye whether you can see light from locations GA6400 UD LCD TV A1 2011 12 14 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 98: ...ring method A Video error_No video Normal audio A2 Established date Revised date Error symptom Content LCD TV A2 Check the DC 24V and Inverter on 2011 12 14 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 99: ...hite Balance value A Video error_No video Normal audio ALL MODELS A3 Established date Revised date Error symptom Content LCD TV A3 Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 9 3 After recording the R G B GAIN Cut value of Color Temp Cool Medium Warm re enter the value after replacing the MAIN BOARD 2011 12 14 Copyright ⓒ 2013 LG E...

Page 100: ...g method A Video error_No video Audio A4 Established date Revised date Error symptom Content LCD TV A4 Check the DC 24V 12V 3 5V 2011 12 14 GA6400 18P GA7900 24P Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 101: ...Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A6 Established date Revised date Error symptom Content LCD TV A6 2011 12 14 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 102: ...Checking method for remote controller for adjustment Press the IN START with the remote controller for adjustment Version ALL MODELS A7 Established date Revised date Error symptom Content LCD TV A7 2011 12 14 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 103: ... power supply finally replace the MAIN BOARD Standard Repair Process Detail Technical Manual TUNER checking part A Video error_Video error video lag stop ALL MODELS A8 Established date Revised date Error symptom Content LCD TV A8 2011 12 14 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 104: ...ar residual image light spot As the part connecting to the external input check the screen condition by signal A9 Established date Revised date Error symptom Content LCD TV A9 ALL MODELS 2011 12 14 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 105: ... error_Color error Check the contact condition of the Link Cable especially dust or mis insertion A10 Established date Revised date Error symptom Content LCD TV A10 ALL MODELS 2011 12 14 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 106: ...sing the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULE error ADD BAR SCAN BAR 4 Video error Classification of MODULE or Main B D A12 Established date Revised date Error symptom Content LCD TV A12 2011 12 14 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 107: ...r _No power A17 Established date Revised date Error symptom Content LCD TV A17 ST BY condition White or Turn Off Power ON condition White or Turn Off 2011 12 14 GA64 7900 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 108: ...BY 3 5V B Power error _No power A18 Established date Revised date Error symptom Content LCD TV A18 2011 12 14 GA64 7900 Check the DC 24V 12V 3 5V GA6400 18P GA7900 24P Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 109: ... method when power is ON B Power error _No power A19 Established date Revised date Error symptom Content LCD TV A19 Check power on pin is high 2011 12 14 GA64 7900 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 110: ...ndard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing A22 Established date Revised date Error symptom Content LCD TV A22 2011 12 14 GA64 7900 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 111: ...r from Off to On Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video A24 Established date Revised date Error symptom Content LCD TV A24 2011 12 14 GA64 7900 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 112: ...he speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal the speaker is normal Standard Repair Process Detail Technical Manual Voltage and speaker checking method when there is no audio C Audio error_No audio Normal video A25 Established date Revised date Error symptom Content LCD TV A25 2011 12 14 GA64 7900 Copyright ⓒ 2013 LG Electronics Inc All right re...

Page 113: ...defective when it does not move at all Standard Repair Process Detail Technical Manual Remote controller operation checking method D Function error A27 Established date Revised date Error symptom Content LCD TV A27 P4102 1 GND 2 KEY1 3 KEY2 4 3 5V_ST 5 GND 6 LOGO_LIGHT 7 IR 8 GND 9 EYE 10 GND 2011 12 14 GA64 7900 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service ...

Page 114: ...al Motion Remote operation checking method Established date Revised date Error symptom Content LCD TV A28 P4100 1 3 5V_WOL 2 3 3V 3 WIFI_DM 4 M_RTS 5 WIFI_DP 6 RX 7 GND 8 TX 9 WOL 10 RESET 11 GND 12 CTS 2011 12 14 A28 D Function error GA64 7900 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 115: ...anual Wifi operation checking method A29 Established date Revised date Error symptom Content LCD TV A29 2011 12 14 D Function error P4100 1 3 5V_WOL 2 3 3V 3 WIFI_DM 4 M_RTS 5 WIFI_DP 6 RX 7 GND 8 TX 9 WOL 10 RESET 11 GND 12 CTS GA64 7900 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 116: ...P7500 I2S SPK IR Blaster Micom RST Above MC95FR364R Renesas R5F1000G RTL8201F VB CG IF USB_1 Composite Google TV Block SIDE 51P LAN REAR Wi Fi DDR3_1Gb x1 LG1152D L9 B0 I2S Out LVDS DDR CONTROLER A B LG1152D L9 B0 USB HDCP EEPROM SPI I2C LG1152A L9 B0 SPDIF OUT Ethernet UART USB 41P GA7900 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Us...

Page 117: ...U_RESET I2C_SCL I2C_SDA IF_ TUNER_SIF TU_CVBS LG1152A L9 B0 Tuner H NIM LG1152D L9 B0 IF_AGC Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 118: ...AV_L R_IN AV_CVBS_DET SPDIF JACK INTERFACE IF SIF CVBS Tuner ATSC H NIM HDMI Switch EEPROM 24C02 OPT LG1152A L9 B0 LG1152D L9 B0 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 119: ...esas IR Blaster Micom Abov IR Receiver SPI I2C IR Out RST SCL SDA 3 5pi SPI_CLK SS MOSI MISO SD_DATA0 D L 4Pin Wafer SCL SDA Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 120: ...B_OCD3 USB3 USB_DM3 DP3 USB HUB USB2512B USB_HUB_IC_IN_ DM1 DP1 USB_DP2 DM2 Wi Fi BCM 5V_USB 0 3 5V_USB 0 3 DC DC IC4305 24V 5V 12V TPS65271 IC4306 LG1152D L9 B0 UART1_RX GPIO61 UART1_TX GPIO62 GPIO13 GPIO15 BT_USB_DP USB_DM1 USB_DP1 USB_DM2 USB_DP2 EXT_INTR0 EB_CS1 GPIO79 BT_USB_DM Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 121: ...HDMI_4 5V_HDMI_3 5V_HDMI_2 5V_HDMI_1 5V_HDMI_1 4 DDC_I2C DDC_I2C DDC_I2C DDC_I2C HDMI Out put I2C HDMI Switch IC701 SII9587B Micom Renesas HDMI X tal 32 768kHz ARC LG1152A L9 B0 LG1152D L9 B0 LG1152D L9 B0 LVDS HS Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 122: ...r LG1152A L9 B0 ARC0 SPDIF_OUT_ARC TU_SIF AUDIO LG1152D L9 B0 I2C2_SDA IEC958OUT LG1152D L9 B0 I2SSCK_OUTA GPIO I2SWS_OUTA GPIO I2SSD_OUTA0 GPIO SDA1 SCL1 LG1152A L9 B0 AAD_ADC_SIF AUAD_L_CH3_IN Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 123: ...IO71 SCL2 GPIO56 Local Dim 1 2k Ω 3 3V_Normal FRC URSA5 IC9600 LGE7303C 3 3k Ω 3 3k Ω 3 3V_Normal 3 3k Ω 3 3k Ω 3 3V_Normal 1 2k Ω 100Ω 100Ω 33Ω 33Ω SCL1 GPIO58 SDA1 GPIO57 I2C_SCL6 I2C_SDA6 Tuner TU6500 TDSS H151F SCL5 GPIO66 SDA5 GPIO65 3 3k Ω 3 3k Ω 3 3V_Normal 33Ω 33Ω 22Ω 22Ω 33Ω 33Ω TPS65178 PMIC GA79 LGE5822 T CON GA79 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training ...

Page 124: ...nload TE ADEC VENC DDR3 x16 DDR3 x16 Flexnoc 64 x 40 0 MHz DDR3 x16 APB Br CA9 CA9 L2 1MB DVR MAU SDEC MAU ADEC MAU PREP MAU IME HME QME Core MAU DEBLOCK CMC Audio DSP MIC External I 2 S DAC ADC ADC DIF SIF DE TP out TP in CI STP in CHB TS PES DEC PES DEC PES DEC Upload vpes thumbnail senc TS Dual core CPU CA9 Dual core GPU Mail400 Multiple MCU x4 Multiple DSP x2 Multiple DDR3 Channel x3 Audio TS ...

Page 125: ... 0 044 DC DC 0 145 DC DC 4A OCP 0 24 OCP Fixed 1 2A OCP 1 8A HDD Only External Hub Only 4 1 or 6 1 400mA 12V 1 2A 24V 0 4A OCP Fixed 1 2A DC DC 효율 미 고려 5V Tol 20 Tol 20 Tol 10 Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 126: ...ent 2 Ch MICOM IR Keypad HDMI SW RMII PHY SPIDF_OUT Built in WiFi Ethernet TXA B 51Pin LVDS Qwerty R Qwerty Remote_R TX AUD BB_TP_DATA CHB_DATA DAC_DATA AAD_DATA HSR_P M DTV TS L9 Block Diagram L9 B0 Features DIF Copyright ⓒ 2013 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 127: ...2S DDR3 DDR3 DDR3 16 16 16 eMMC RMII PHY USB2 0x3 DTV IF GBB AFE 10b 30MHz UARTx3 I2Cx9 SPIx2 GPIOx60 Ethernet MAC SCI eMMC SDIO DMACx8 VIC 8KB SRAM Timer Watchdog Capture Block w LLPLL CVBS AFE 12b 54MHz Analog Audio AFE 10b 81MHz Video Buffer Analog Audio Decoder Mux HS LVDS x2 Mux ARM Cortex A9 Dual 1GHz w Dual NEON 32KB I 32KB D 1MB L2 DDR PLL x2 DCO SPLL DPLL CPU PLL DDR3 PHY 8 SCART Out Line...

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