LG 42PA4500 Service Manual Download Page 38

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LGE Internal Use Only

4-6. GP4

LM1

I2C MAP

I2C_SCKM1/GPIO75
I2C_SDAM1/GPIO76

GPIO49
GPIO50

I2S_IN_WS/GPIO149

SPDIF_IN/GPIO152

I2S_IN_SD/GPIO151

I2S_IN_BCK/GPIO150

I2C_SCKM2/DDCR_CK/GPIO72
I2C_SDAM2/DDCR_DA/GPIO71

IC400

AE6
AD6

AB5
AB3

D9
D7

D8
C8

P23
P24

TU_SCL

TU_SDA

AMP_SCL

AMP_SDA

P_SCL

P_SDA

SUB_SCL

SUB_SDA

I2C_SCL

I2C_SDA

P500
LVDS

TU300
TDSS-G201D

IC300
STA368BWG

P501
KEY/IR PIN8

+3.3V_TU

R3082.2K

R309 2.2K

+3.3V

R624 2K

R623 2K

+3.3V_AVDD

R468 3.3K

R466 3.3K

+3.3V_ST

R539 4.7K

R538 4.7K

SCL_3.3V_MOD
SDA_3.3V_MOD

IC503 EEPROM
IC502 HDCP (OTP)

+3.3V_AVDD

R469 2.2K

R468 2.2K

EAX64337201_0

Summary of Contents for 42PA4500

Page 1: ... com Asia Oceania http biz lgservice com Internal Use Only Printed in Korea P NO MFL67483102 1205 REV00 PLASMA TV SERVICE MANUAL CHASSIS PA23A MODEL 42PA4500 42PA4500 TM MODEL 42PA4520 42PA4520 TJ CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL ...

Page 2: ...opyright LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 6 BLOCK DIAGRAM 13 EXPLODED VIEW 14 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...hout 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 metallic parts such as antenna terminals phone jacks...

Page 4: ... 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 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC 4 Module General Specification 42 2D HD No Item Specification ...

Page 5: ...3 PAL I II 4 SECAM L L 5 DVB T 6 DVB C EU PAL Market 3 Receiving system Analog Upper Heterodyne Digital COFDM 4 Scart Jack 1EA PAL SECAM 5 Component Input 1EA Y Cb Cr Y Pb Pr 6 RGB Input 1EA RGB PC Analog D Sub 15Pin 7 RS232C 1EA SVC 8 HDMI Input 2 or 3EA HDMI PC HDMI DTV HDMI1 DVI HDMI2 HDMI3 9 Audio Input 2EA RGB DVI Audio Component L R Input 10 SPDIF Out 1 EA SPDIF Out 11 USB 1EA for SVC S W Do...

Page 6: ...ODE 1 Press the POWER ON KEY on R C for adjustment 2 OSD display and screen display PATTERN MODE Set is activated HEAT run without signal generator in this mode Single color pattern WHITE of HEAT RUN MODE uses to check panel Caution If you turn on a still screen more than 20 minutes Especially digital pattern cross hatch pattern an after image may be occur in the black level part of the screen 8 P...

Page 7: ... 1 ADC Enter Service Mode by pushing ADJ key Enter Internal ADC mode by pushing key at 5 ADC Calibration Caution Using power on button of the Adjustment R C power on Multi vision ADC Calibration Protocol RS232 Adjust Sequence aa 00 00 Enter Adjust Mode xb 00 40 Component1 Input 480i ad 00 10 Adjust 480i Comp1 xb 00 60 RGB Input 1024 768 ad 00 10 Adjust 1024 768 RGB aa 00 90 End Adjust mode Require...

Page 8: ... to the module less than 10cm distance keep it with the surface of the Module and Color Analyzer s Prove vertically 80 100 3 Aging time After aging start keep the power on no suspension of power supply and heat run over 5 minutes Using no signal or full white pattern or the others check the back light on Auto adjustment Map RS 232C RS 232C COMMAND CMD ID DATA Wb 00 00 White Balance Start Wb 00 ff ...

Page 9: ... 24C02 by using DDC2B protocol Check whether written EDID data is correct or not For SVC main Ass y EDID have to be downloaded to Insert Process in advance 4 5 EDID DATA 1 All Data HEXA Value 2 Changeable Data Serial No Controlled Data 01 Month Controlled Data 00 Year Controlled Check sum 4 6 EDID DATA Auto Download 1 Press Adj key on the Adj R C 2 Select EDID D L menu 3 By pressing Enter key EDID...

Page 10: ...e adjustment remote controller 2 Check the Sensor DATA It must be under 10 and keep the data longer than 1 5s 3 Check OK Sensor DATA 0 4095 Power Saving Mode 0 12 IF you press IN STAP Button change Green Eye check OSD Input HEX HDMI1 10 HDMI2 20 HDMI3 30 EDID C S data 2D FHD HDMI RGB check sum Hex Block 0 0x63 0x7C Block 1 0x76 HDMI1 0x66 HDMI2 0x56 HDMI3 EDID C S data 2D HD HDMI RGB check sum Hex...

Page 11: ...ial number D L is mandatory by D book 4 0 Manual Download Model Name and Serial Number If the TV set is downloaded By OTA or Service man Sometimes model name or serial number is initialized Not always There is impossible to download by bar code scan so It need Manual download 1 Press the instart key of ADJ remote controller 2 Go to the menu 5 Model Number D L like below photo 3 Input the Factory m...

Page 12: ...1 Put the USB Stick to the USB socket 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it didn t work But your downloaded version is High USB data is auto matically detecting 3 Show the message Copying files from memory 4 Updating is staring 5 Updating Completed The TV will restart automatically After turn on TV Please press IN STOP button o...

Page 14: ...ED VIEW 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 Do not modify the original design without permiss...

Page 15: ... 19 50 44 14 8 39 3 26 60 27 61 28 62 29 63 30 64 31 32 33 34 65 66 67 68 69 BUF2_FE_TS_VAL_ERR BUF2_FE_TS_SYN BUF2_FE_TS_SYN 5V CI_IOWR R155 3K EU R148 15K EU R134 100 1 4W EU R132 100 EU R143 180 EU CI_ADDR 7 PCM_A 6 PCM_D 0 7 R111 10K EU CI_TS_DATA 1 PCM_OE R131 33 EU CI_TS_DATA 0 PCM_A 8 AR103 33 EU C115 27pF 50V EU CI_ADDR 11 C105 0 1uF 16V EU R144 470 EU R121 10K EU AV SC1_R_IN BUF1_FE_TS_SY...

Page 16: ...PRING 7A B_TERMINAL1 6A T_TERMINAL1 3 E_SPRING R229 100K USA R252 75 R238 470K NON_EU R223 12K R264 10K R231 33 SIDE_HDMI_1 R217 10K HDMI_1 R273 0 ET_NET TX JP202 2 5V DDC_SCL_1 DDC_SDA_1 R281 10K HDMI_1 5V_DET_HDMI_2 R291 0 ET_NET D0 _HDMI3 COMP1_DET JK209 3AU04S 305 ZC LG 1 2 3 4 5 5V GND D225 40V B140A PEN_TOUCH R219 470K R282 10K HDMI_1 JP204 JK208 PPJ234 02 EU 5A GN O SPRING 6A GN E LUG 4A GN...

Page 17: ...5 B1 3 3V 6 SIF 7 B2 1 8V 8 CVBS 9 NC_1 10 NC_2 11 NC_3 12 B3 3 3V 13 B4 1 23V 14 NC_4 15 GND 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 SHIELD C303 10uF 16V TU_SCL RF_SWITCH_CTL C313 10pF 50V READY TU_CVBS R307 22 BUF1_FE_TS_DATA 0 7 3 3V_TU FE_TS_SYN R310 1K RF_SWITCH TU304 TDSN G301D DVB_T2 1 NC_1 2 RESET 3 SCL 4 SDA 5 B1 3 3V 6 SIF 7 B2 1 8V 8 CVBS 9 N...

Page 18: ...PCM2_RESET GPIO134 Y20 UART1_RX GPIO44 E5 UART1_TX GPIO43 E4 UART2_RX GPIO64 U24 UART2_TX GPIO65 U25 I2C_SDAM2 DDCR_DA GPIO71 AB21 I2C_SCKM2 DDCR_CK GPIO72 AA21 DDCA_DA UART0_TX H5 DDCA_CK UART0_RX H4 PWM0 GPIO66 AA22 PWM1 GPIO67 Y22 PWM2 GPIO68 V24 PWM3 GPIO69 U23 PWM4 GPIO70 T22 PWM_PM GPIO199 C7 SAR0 GPIO31 E7 SAR1 GPIO32 D7 SAR2 GPIO33 J6 SAR3 GPIO34 F6 SAR4 GPIO35 C1 TS0CLK GPIO87 AA11 TS0VAL...

Page 19: ...OLD IO3 8 VCC C522 10pF 50V READY RXA1 R572 22 READY C556 0 1uF R540 10K RXB1 3 3V_ST SPI_SDI LD500 3 3V_ST RXA3 3 3V_ST RXB4 R575 33 P500 104060 8017 FHD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 PF_WE RXA3 ...

Page 20: ...OUTPUT INPUT ADJ GND C629 10uF 16V C670 330pF 50V C635 22pF 50V READY C664 1uF 25V R604 0 R688 39 C606 0 1uF 16V IC603 TPS54327DDAR 3 VREG5 2 VFB 4 SS 1 EN 5 GND 6 SW 7 VBST 8 VIN 9 EP GND IC601 TJ3940S 2 5V 3L 1 GND 2 VOUT 3 VIN 3 3V AMP_MUTE AUD_LRCK AUD_SCK L609 10 0uH R617 59K 1 RL_ON C655 0 047uF 25V 3 3V R628 10K READY C612 10uF 6 3V R605 0 IC600 AP2121N 3 3TRE1 1 GND 2 VOUT 3 VIN P_17V C642...

Page 21: ...D3 DQL0 E3 DQL1 F7 DQL2 F2 DQL3 F8 DQL4 H3 DQL5 H8 DQL6 G2 DQL7 H7 DQU0 D7 DQU1 C3 DQU2 C8 DQU3 C2 DQU4 A7 DQU5 A2 DQU6 B8 DQU7 A3 VREFCA M8 VREFDQ H1 ZQ L8 VDD_1 B2 VDD_2 D9 VDD_3 G7 VDD_4 K2 VDD_5 K8 VDD_6 N1 VDD_7 N9 VDD_8 R1 VDD_9 R9 VDDQ_1 A1 VDDQ_2 A8 VDDQ_3 C1 VDDQ_4 C9 VDDQ_5 D2 VDDQ_6 E9 VDDQ_7 F1 VDDQ_8 H2 VDDQ_9 H9 NC_1 J1 NC_2 J9 NC_3 L1 NC_4 L9 NC_6 T7 VSS_1 A9 VSS_2 B3 VSS_3 E1 VSS_4...

Page 22: ......

Page 23: ... reserved Only for training and service purposes LGE Internal Use Only GP2R LM1 Training Manual Table of contents 1 PCB layout 2 GP2R vs LM1 3 GP2R Block Power I2C 4 LM1 Block Power I2C 5 LM1 SOC Power sequence 6 Memory test 7 Pen touch overview ...

Page 24: ...rved Only for training and service purposes LGE Internal Use Only 1 PCB Layout GP2R 206 x 183 LM1 206 x 141 5 LM1 use internal EDID HDCP LM1 is Removing the EEPROM for EDID HDCP LM1 is optimizing Power block LM1 is reducing DC DC LDO power application ...

Page 25: ...x141 5 change PCB Size smaller than GP2R Main IC S7R S7LR Internal sub Micom PM block Jack Layout Slim Depth Slim Depth Same Sub Assy PZ Tool PA Tool GP2R 15pin LM1 8pin PSU 50R3 XP5 B d 50R4 UP1 B d Reduce power on time SW GP2R LM1 PDP only code JIG GP2R LM1 Support DFT JIG Develop new WAFER and CABLE 12 years Power Wafer 18P 18P Stand by 0 3W Stand by 3 5V O O Stand by 3 5V 12V_secondary X X Not...

Page 26: ...V_ST 4 845 5 355 5 01 86 0 009 5V_ST_EN 4 845 5 355 5 00 17 0 710 3 3V_AVDD 3 14 3 6 3 31 0 5 15 0 285 2 5V_AVDD 2 38 2 62 2 53 20 0 200 1 5V_DDR_IN 1 425 1 575 1 57 1 5V 5 20 0 310 1 26V_VDDC 1 2 1 32 1 27 30 0 770 3 3V_ST 3 234 3 366 3 30 0 5 19 0 024 17V 16 15 17 85 17 03 1 09A 1 420 5V_TU 4 75 5 25 4 99 None 20 0 170 5V 4 845 5 355 5 03 57 2 600 3 3V_TU 3 15 3 46 3 26 None 26 0 320 1 2V_TU 1 2...

Page 27: ...6 3V C608 0 1u 16V L602 2A C615 0 1u 16V C609 10u 16V C611 0 1u 16V C610 10u 16V C612 0 1u 16V C637 10u 10V C647 10u 10V C650 0 1u 16V C651 10u 10V C652 10u 10V C653 0 1u 16V 2 5V_AVDD IC604 TJ3964 C616 22u 6 3V C623 0 1u 16V S7_MPLL IC503 S FLASH MX25L8005M2I 15G C552 0 1u 16V SUB ASSY 3 3V_AVDD 2 5V_AVDD 17V IC303 Audio AMP STA338BWG13TR 5V_TU IC605 TPA54319 L610 2A C636 0 01u 50V C341 68u 35V C...

Page 28: ... C659 22u 6 3V C660 0 1u 16V C661 0 1u 16V L100 2A C126 0 1u 16V C128 0 1u 16V IC101 74LCX244 C120 0 1u 16V IC303 Audio AMP C332 0 1u 50V C103 22u 10V C104 0 1u 16V SPDIF C235 0 1u 16V L708 2A C725 10u 16V C728 0 1u 16V C746 10u 10V C747 10u 10V C748 0 1u 16V L710 2A 1 0V 0 1u 16V 13ea C750 0 1u 16V C753 22u 16V C754 0 1u 16V 3 3V_3D C735 0 1u 16V IC707 AZ1117ST C751 0 1u 16V 1 8V R834 0Ω1 10W C75...

Page 29: ...ts reserved Only for training and service purposes LGE Internal Use Only IC600 3 3V_AVDD AZ1085S IC604 2 5V_AVDD TJ3964S 3 3 LDO DC DC Start up Vin Vout Vin Vout IC602 1 5V_DDR_IN TPS54319 Vin Ve n Vo Io IC603 1 26V_VDDC TPS54319 Vin Ve n Vo Io ...

Page 30: ...Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only IC606 3 3V AZ1085S Vin Vout 3 4 LDO DC DC Start up IC605 5V_TU TPS54231 Vin Ve n Vo Io ...

Page 31: ...R 0x38 Ch5 AMP_SDA AMP_SCL 3 3 V 2K R360 R359 U1 TGPIO1 DNGAIN TGPIO0 UPGAIN U2 LG8300 0x74 Ch4 LG8300 0x74 Ch4 F13 G14 P_SCL P_SDA MODULE 0x1C Ch4 MODULE 0x1C Ch4 3 3 V_A VDD MODULE_SCL 3DF_SCL 3 3K R1412 R1411 I2S_IN_SD GPIO176 SPDIF_IN GPIO177 MODULE_SDA 3DF_SDA 4 7K R780 R781 ISP ISP DDCA_CK UART0_RX DDCA_DA UART0_TX B5 A5 RGB_DDC_SCL RGB_DDC_SDA EEPROM RGB 0xA0 Ch8 EEPROM RGB 0xA0 Ch8 5 0 V_S...

Page 32: ...3 3A AP2191 USB 3 5V St 3 3V ST AP2121 LM1 Power Block Amp 1 26V Core AOZ1073 3A 1 5V DDR AOZ1073 3A 2 5V LDO 3 3V AVDD LDO 3A 1 25V Tuner LDO 3 3V Standby LDO AP2121 FET SW GP2R Power Block 5 1V 17V St 5V 5V Tuner TPS54231 2A Amp 3 3V Multi LDO 3A 1V 3D core AOZ1073 3A 3 3V 3D LDO 3A 1 8V 3D DDR LDO AP2191 USB DC DC 4 LDO 7 DC DC 2 LDO 4 3 3V Multi TPS54327 3A 1 25V _TU LDO 1A 1 8V Tuner LDO 1A 2...

Page 33: ..._CI C643 0 1uF 50V 1608 C638 C646 0 1uF 50V 1608 Audio AMP C627 10uF 6 3V 1608 L604 120 Ohm 2A 1608 3 3V_TU C614 0 1uF 16V 1005 C615 10uF 16V 6 3V 3216 1608 change Tuner 3 3V to 1 8V AP1117E18G 850mW C631 10uF 6 3V 1608 C618 0 1uF 16V 1005 L101 120 Ohm 2A 1608 C137 0 1uF 16V 1005 Spec 850mV 16mVrms 283mVpp Spec 165mV 8 66mVrms 37 5mVpp Spec 165mV 23 4mVrms 166 6mVpp Spec 165mV 8 5mVrms 186 6mVpp S...

Page 34: ...uF 16V 1005 C554 10uF 10V 6 3V 2012 1608 change C552 0 1uF 16V 1005 Spec 165mV 9 7mVrms 67 5mVpp C605 10uF 6 3V 1608 x3 0 1uF 16V 1005 C427 10uF 10V 6 3V 2012 1608 0 00636 change LM1 C682 0 1uF 16V 1005 L613 120 Ohm 2A 1608 C671 10uF 10V 6 3V 2012 1608 change x3 120 Ohm 2A 1608 1 25V_TU C625 10uF 6 3V 1608 3 3V to 1 25V AP1117EG 13 mW 3 3V to 2 5V TJ3940S 2 5V 714mW LM1 C685 10uF 6 3V 1608 C684 0 ...

Page 35: ...5 V 4 3 P_5V L600 120 Ohm 5A 2012 C608 10uF 10V 16V 2012 3216 0 0005 change 5V C610 0 1uF 16V 1005 USB OCD SPDIF C219 0 1uF 16V 1005 Spec 250mV 7mVrms 70mVpp MOFET Switch L100 120 Ohm 2A 1608 C104 0 1uF 16V 1005 PCMCI C101 0 1uF 16V 1005 5V_CI_ON C100 22uF 10V 16V 3216 3225 0 017 change Spec 250mV 31mVrms 135 4mVpp ...

Page 36: ... 10uF 10V 6 3V 2012 1608 change L606 120 Ohm 5A 2012 C653 4 10uF 25V 3225 C651 56 22uF 16V 3225 1 5V_DDR_IN LM1 MIU0 1 L500 500 Ohm 3A C544 10uF 10V 6 3V 2012 1608 change C545 0 1uF 16V 1005 VCC_1 5V_DDR DDR1 2 x2 1000pF 50V 1005 x2 0 1uF 16V 1005 C467 1000pF 50V 1005 L412 120 Ohm 2A 1608 x4 10uF 10V 6 3V 2012 1608 change x4 0 1uF 16V 1005 5V to 1 1V TPS65253RH D adjustable 0 25 C468 1uF 10V 1005 ...

Page 37: ...l Use Only S T B Y 4 5 STBY 5V to 3 3V AP2121N 3 3 0 3A C600 10uF 10V 16V 2012 3216 0 0005 change C601 0 1uF 16V 1005 C604 1uF 6 3V 1005 3 3V_ST L406 120 Ohm 2A 1608 C469 0 1uF 16V 1005 Spec 250mV 23mVrms 150mVpp RS232C C228 0 1uF 16V 1005 LM1 C556 0 1uF 16V 1005 Serial Flash C547 0 1uF 16V 1005 SUB Ass y ...

Page 38: ...N_BCK GPIO150 I2C_SCKM2 DDCR_CK GPIO72 I2C_SDAM2 DDCR_DA GPIO71 IC400 AE6 AD6 AB5 AB3 D9 D7 D8 C8 P23 P24 TU_SCL TU_SDA AMP_SCL AMP_SDA P_SCL P_SDA SUB_SCL SUB_SDA I2C_SCL I2C_SDA P500 LVDS TU300 TDSS G201D IC300 STA368BWG P501 KEY IR PIN8 3 3V_TU R3082 2K R309 2 2K 3 3V R624 2K R623 2K 3 3V_AVDD R468 3 3K R466 3 3K 3 3V_ST R539 4 7K R538 4 7K SCL_3 3V_MOD SDA_3 3V_MOD IC503 EEPROM IC502 HDCP OTP ...

Page 39: ...service purposes LGE Internal Use Only 5 GP4 LM1 SOC Power Sequence Procedure Hot Point SOC_RESET 3 3V_AVDD 1 10V_VDDC 1 5V_DDR_IN 3 3V_AVDD 1 10V_VDDC 1 5V_DDR_IN 0ms Multi_PWR 288ms Spec before all pwr input raise SOC_RESET SOC_RESET timing and Power sequence are ok Threshold ...

Page 40: ...hts reserved Only for training and service purposes LGE Internal Use Only Solution Value of Capacitor and resister 1 2 0CK226DC67A 22uF 6 3V 0 0117 Cap Æ 22uF Resister Æ 100 3 3V_AVDD SOC_RESET Threshold 5 GP4 LM1 SOC Power Sequence Procedure ...

Page 41: ...012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only STEP1 Setting like below Red box STEP2 Call direct MIU Auto BIST function from Menu 6 Memory margin test DDR ...

Page 42: ...ervice purposes LGE Internal Use Only STEP3 Setting like below and push Start DQS Red box STEP4 below picture is test result Red box is timing margin Normal operating board has timing margin 7 9 If timing margin under 7 it s some problem DDR or Main MIU 6 Memory margin test DDR ...

Page 45: ...rograms Check the LG Pentouch Multi touch Driver or Pentouch TV 2 Check USB Dongle Driver in Device Manager LG Pentouch Multi touch Driver MultiTouch LG Pentouch Multi touch Driver BUS LG Pentouch Multi touch Driver Dongle the Dongle Driver should be displayed when connected USB Dongle 7 1 Pen touch overview Check the installation status ...

Page 48: ...r the mouse to start the Pentouch program Pressing the Home button on the touch pen works in the same way as right clicking the mouse Viewing the Screen Settings I mage shown may differ from your monitor If you press the OK button on the remote control the screen shown below appears to indicate that the screen settings have been updated successfully The text Pentouch should be displayed to indicat...

Page 49: ...B Dongle RF Wireless communication 2 4GHz Principle 2 The position data processed Pentouch TV Application looks like PC mouse Step 1 USB Dongle receive the position data Step 2 USB Dongle Driver parsing the positon Step 3 Pentouch TV application drawing and click function Step 4 The result was displayed PDP TV through HDMI or RGB cable The HDMI or RGB signal is PC s output that configuration set b...

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