LG 32BL95U Service Manual Download Page 17 | Manualshive

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Copyright ©

LG Electronics Inc. All rights reserved.

Only training and service purposes.

Fig.1

Place the monitor’s screen face down

Fig.2 Disassemble the Stand body with pulling down the button.

DISASSEMBLY

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Summary of Contents for 32BL95U

Page 1: ...NG THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUAL Copyright 2018 LG Electronics Inc All rights reserved Only training and service purposes CONFIDENTIAL P NO MFL70211509 1810 REV00 LED MONITOR SERVICE MANUAL LM80G 32BL95U ...

Page 2: ...ronics Inc All rights reserved Only training and service purposes CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 7 BLOCK DIAGRAM 21 EXPLODED VIEW 22 DISASSEMBLY 17 TROUBLE SHOOTING GUIDE 23 CONTENTS ...

Page 3: ...l 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 etc If the exposed meta...

Page 4: ... 2 Audio L R Audio L R Length 1 5 0 05m P N EAD63932603 Weight 0 06kg 10 Refer to BOM Color White Length Weight Color Length 1 5m 0 05m P N EAD63988302 Weight 0 06kg 10 Refer to BOM Color White 1 CABLE 90Ω 5Ω bl USB Type C USB A To C Gender Thunderbolt Impedance 2 CONNECTOR 90Ω 10Ω Length 1 50m 0 05m P N EAD63749403 Weight 0 10kg 10 Refer to BOM Color White 1 CABLE 100Ω 5Ω 2 CONNECTOR 100Ω 10Ω Len...

Page 5: ... 800 x 600 H Pixels 45 1650 1280 110 40 220 V Lines 60 750 720 5 5 20 H Pixels 49 702 1680 1280 72 128 200 V Lines 59 81 831 800 3 6 22 H Pixels 63 981 1688 1280 48 112 248 V Lines 60 02 1066 1024 1 3 38 H Pixels 60 1800 1600 24 80 96 V Lines 60 1000 900 1 3 96 H Pixels 67 5 2200 1920 88 44 148 V Lines 60 1125 1080 4 5 36 H Pixels 133 32 2080 1920 48 32 160 9 148 5 1920 x 1080 1920 x 7 108 1280 x ...

Page 6: ...xels 60 1800 1600 24 80 96 V Lines 60 1000 900 1 3 96 H Pixels 67 5 2200 1920 88 44 148 V Lines 60 1125 1080 4 5 36 H Pixels 133 29 2080 1920 48 32 160 5 74 25 1280 x 720 6 83 5 1280 x 800 7 108 1280 x 1024 8 108 1600 x 900 9 148 5 1920 x 1080 1920 x H Pixels 133 29 2080 1920 48 32 160 V Lines 60 2222 2160 54 5 3 H Pixels 88 79 2720 2560 48 32 80 V Lines 59 95 1481 1440 3 5 33 H Pixels 67 5 4400 3...

Page 7: ...nal Unit Product Specification Standard 2 5 Reserve after operation Above 5 Minutes Heat Run Temperature at 25 5 C Relative humidity 65 10 Input voltage 100 240V 50 60Hz 2 6 Adjustment equipments Color Analyzer CA 210 or CA 110 DDC Adjustment Jig equipment 3 Main PCB check process APC After Manual Insult executing APC 3 1 ADC Process 1 32UL950 doesn t need ADC process because it has only digital i...

Page 8: ...sion 6 Serial Number SET Serial Number Inserted at Production Line Variable data 7 Model Name LG HDR 4K Protocol DDC 2AB 3 3 Function Check 3 3 1 Check Screen Check input and signal items cf work instructions 1 HDMI1 3840 x 2160 60Hz 2 DisplayPort1 2 3840 x 2160 60Hz using PC 3 Thunderbolt 3840 x 2160 60Hz using PC 4 Total Assembly line process 4 1 Write HDCP Key Write HDCP Key into EEPROM by usin...

Page 9: ...RESET Warm 6500K Color coordinates and Gamma calibration Set the CA 210 for calibration Input Gamma calibration Pattern R G B Grey 20 Set as Warm 6500K by commanding COLOR_MODE_CHANGE Command code Gamma calibration and verify Warm 6500K color adjustment Adjust to meet x y color coordinate as below 2 4 min 4 8min 8 10min 10 25min 25 40min 40min x 0 318 0 318 0 317 0 316 0 314 0 313 y 0 339 0 338 0 ...

Page 10: ...ay 100IRE Medium Min 200 Warm Min 260 Note x y coordinates are drifted about 0 007 after 30 mins heat run So checking color coordinate within 5 min at total assembly line consider x y coordinates might be up to 0 007 than x y target of each color temperature Note Manual W B process 1 Power off Power on Å 3 times Æ 1 time and push 2 and push the Å or Æ 3 In Service Menu When doing Adjustment Please...

Page 11: ...70 Sharpness 50 SUPER RESOLUTION Off Black Level OSD is activated at HDMI input Depends on HDMI input video signal format RGB High YUV Low DFC Off Uniformity Off Game Adjust Response Time Fast FreeSync Off Black Stabilizer 50 Color Adjust Gamma Mode 2 Color Temp Custom Red 50 Green 50 Blue 50 Six Color Hue Saturation Color Hue 50 Color Saturation 50 Color Red Green Blue Cyan Magenta Yellow Picture...

Page 12: ... to initial Settings No Æ Make sure to do FACTORY RESET at the final process 6 Signal composition for adjustment 6 1 I2C 100K BPS 6 2 COMMUNICATION START START 6E A STOP 50Ms Until ACK BIT goes LOW Repeat it 6 3 Command form Command form use DDC2AB standard communication protocol START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP a LEN DATA BYTE number to send b CMD Command language that monito...

Page 13: ...6 00 00 64 Tune Gain 5 G GAIN 18 00 00 64 6 B GAIN 1A 00 00 64 7 BRIGHT Backlight 10 00 00 64 Tune Analog Bright 8 FACTORY RESET F0 00 00 Factory reset 9 AUTO_COLOR_ADJUST F1 00 0 AUTO COLOR Tuning 0 Auto color 10 COLOR_MODE_CHANG E F2 00 01 WARM 6500K 02 COOL 9300K 11 Elapsed time Clear E9 00 00 Aging off Clear elapsed time 12 Aging On Off F3 00 FF 00 FF ON 00 OFF 13 Input Select F4 00 0xD0 0x90 ...

Page 14: ...ommand 0xF7 00 0x00 0x01 0x00 OFF 0x01 ON 18 Module name LM315WR2 SSA1 19 Peak Luminance B2 00 00 Off 01 Peak 6 5 EEPROM Data Write 6 5 1 Signal Table LEN 84h Bytes CMD E8h ADH E2 PROM Slave Address A0 A2 A4 A6 A8 AA AC AE Not 00h Reserved by Buffer To EEPROM ADL E2 PROM Sub Address 00 FF Data Write data Delay 20ms 6 5 2 Command Set No Adjustment contents CMD hex LEN Explanation 1 EEPROM WRITE E8 ...

Page 15: ...ROM READ E7 A0 0 0 Page 0 7F Read 2 80 0 Page 80 FF Read 3 A2 0 1 Page 0 7F Read 4 80 1 Page 80 FF Read 5 A4 0 2 Page 0 7F Read 6 80 2 Page 80 FF Read 7 A6 0 3 Page 0 7F Read 8 80 3 Page 80 FF Read 9 A8 0 4 Page 0 7F Read 10 80 4 Page 80 FF Read 11 AA 0 5 Page 0 7F Read 12 80 5 Page 80 FF Read 13 AC 0 6 Page 0 7F Read 14 80 6 Page 80 FF Read 15 AE 0 7 Page 0 7F Read 16 80 7 Page 80 FF Read 6 6 3 U...

Page 16: ...d Only training and service purposes L 0x00 0x7F D data 8 byte write L 0x00 0x10 0x70 6 6 5 EDID Read DDC2B Command A0 A1 STOP A A A A L A0 Data8 Data1 START A STOP A 00 A0 START A A CS A Data1 A1 START Data128 128 Byte transfer of EDID Buffer of MICOM ...

Page 17: ...17 Copyright LG Electronics Inc All rights reserved Only training and service purposes Fig 1 Place the monitor s screen face down Fig 2 Disassemble the Stand body with pulling down the button DISASSEMBLY ...

Page 18: ...pyright LG Electronics Inc All rights reserved Only training and service purposes Fig 3 Remove the Screw 4EA and disassemble the back cover Fig 4 Disassemble the back cover Latch Type Start Point Start Point ...

Page 19: ...ectronics Inc All rights reserved Only training and service purposes Fig 5 Remove thermal pad 1EA EMI Tape 2EA Fig 6 Remove the side cover Fig 7 Disassembly the LED Cable Control Assemble Latch Type FFC cable and Speaker ...

Page 20: ... 20 Copyright LG Electronics Inc All rights reserved Only training and service purposes Fig 8 Disassembly the screws between Middle 19 Rear Frame 4 and Module ...

Page 21: ...der Bolt IC LED Driver PD Controller IC PD Controller IC TBT A Port TBT B Port HDMI 1 DP USB MUX USB 3 0 HUB USB 3 0 Down Stream Clock Generator Current limit MICOM USB EEPROM HDMI 2 Flash Memory System EEPROM DDR Memory Audio Aamp H P AMP SP L SP R H P 5V 1A PD 85W SPI SPI Flash Memory SPI USB 3 0 Down Stream 5V 1A Current limit ...

Page 22: ...d characteristics These parts are identified by in the 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 IMPORTANT SAFETY NOTICE 200 300 520 500 330 510 400 900 920 910 121 120 540 A3 200T ...

Page 23: ...r Replace X100 N Check C701 Voltage Level 19V Check Power connector OK Replace Adapter Y N Y Check IC703 Output Voltage Level 3 3V Replace IC703 Recheck Y N Check X100 Clock 27MHz Check IC701 702 Output Voltage Level 5V Replace IC701 702 Recheck N Y Replace IC107 Flash Memory Y Y Check IC705 Output Voltage Level 2 5V 1 2V Replace IC705 Recheck N ...

Page 24: ... Driver IC Y N N Check Panel Power 10V L700 Check IC700 Output 10V Replace IC700 Recheck Y N Check Panel eDP AUX P300 9 10 36 37 Check IC300 IC303 Repair Main B D Y N Check FFC Cable for Damage or Open Conductors Check LED Driver Output P601 P602 1 2 5 6 Replace T Con Board or Module Y Check P201 PIN No 69 Replace G SYNC Module N Check WLED_ENABLE High IC601 IC602 27pin Y Replace G SYNC Module N ...

Page 25: ...Replace the G SYNC Module Check input signal format Is it supported Check JK102 for proper connection or Damage Replace the Connector N Y Check HDMI Cable for Damage or Open Connector Y Check I2C Signal EDID Replace the IC100 N Y Check IC102 AUX Signal J1 H1 Replace the IC102 N Y Check IC103 AUX Signal 3 4 Replace the IC103 N Y Y ...

Page 26: ...urposes 4 No Video DP Replace the G SYNC Module Check input signal format Is it supported Check JK101 for proper connection or Damage Replace the Connector N Y Check DP Cable for Damage or Open Connector Y Check IC101 AUX Signal 29 30 Replace the IC101 N Y Y Check IC103 AUX Signal 3 4 Replace the IC103 N Y ...

Page 27: ...10 AOD2922 100V G D S Q101 AOD2922 100V G D S Q115 AOD2922 100V G D S Q113 AOD2922 100V G D S Q118 SSM3J332R S G D R148 330 R137 330 R107 10 R151 9 1 1 3216 R198 100K R104 0 4 2W R121 47K OPT R141 9 1 1 3216 R178 330 R146 330 R167 9 1 1 3216 R116 1K R115 47K R160 330 R159 9 1 1 3216 R113 330K R173 9 1 1 3216 R145 9 1 1 3216 R124 47K R170 330 R177 9 1 1 3216 R105 10K R143 9 1 1 3216 R101 1K R163 9 ...

Page 28: ...SCALER 3 3V_SCALER 3 3V_SCALER 3 3V_SCALER 3 3V_SCALER 5V_STANDBY 5V_STANDBY 3 3V_SCALER HDMI2_5V HDMI2_5V TP200 Q203 MMBT3904 NXP E B C Q201 MMBT3904 NXP E B C Q200 MMBT3904 NXP E B C VR208 10pF 18V OPT VR204 10pF 18V VR209 10pF 18V OPT VR206 10pF 18V VR212 18V 10pF VR213 18V 10pF VR203 10pF 18V VR211 18V OPT 10pF VR201 10pF 18V ZD200 KDZ5 6V SPI_EN_SC USB_DET USBPD_POL_2 ALT_MOD_DET_2 15VBUS_ON ...

Page 29: ...TMA11 B_TMDQU1 D_TMDQSLB AB_TMBA0 A_TMDQL3 B_MCKB C_TMDQL6 AB_TMA8 A_TMDQU7 CD_TMBA2 CD_TMA14 D_MCK B_TMDQU0 AB_TMWEB A_TMDQL4 D_TMDQL6 A_TMDMU CD_TMA11 CD_TMA13 B_TMDQL3 B_TMDQU1 A_TMDQSL AB_TMBA0 C_TMDQSUB D_TMDQSU A_TMDQU3 CD_TMA0 B_TMDML AB_TMA9 A_TMDQL1 AB_TMA15 C_TMDQL4 C_TMDQL7 A_TMDQU6 AB_TMBA1 CD_TMA7 B_TMDQSL AB_TMA2 D_TMDQL7 CD_TMA8 A_TMDQU4 CD_TMA7 AB_TMA11 B_TMDQSUB AB_TMA5 AB_TMCASB ...

Page 30: ...GND_147 L21 GND_148 L22 GND_149 L27 GND_150 L28 GND_151 L29 GND_152 L30 GND_153 L31 GND_154 L37 GND_155 M1 GND_156 M2 GND_157 M3 GND_158 M6 GND_159 M7 GND_160 M8 GND_161 M9 GND_162 M10 GND_163 M11 GND_164 M18 GND_165 M19 GND_166 M20 GND_167 M21 GND_168 M22 GND_169 M24 GND_170 M25 GND_171 M26 GND_172 M27 GND_173 M28 GND_174 M29 GND_175 M30 GND_176 M31 GND_177 M34 GND_178 N2 GND_179 N6 GND_180 N8 GN...

Page 31: ...S_DATA 4K_EDP_TX2P 4K_EDP_TX0N AUD_AMP_SCL 4K_EDP_TX2N 4K_EDP_TX1N 4K_EDP_TX3P HP_NMUTE HP_ROUT_HP 4K_EDP_TX2P 4K_EDP_TX0N AMP_3 3V_ON AMP_NMUTE 4K_EDP_TX2N FP_I2S_WS HP_LOUT_HP FP_I2S_BCLK 4K_EDP_TX3N HP_AMP_SDA FP_I2S_MCLK HP_AMP_SCL 4K_EDP_TX3P 4K_EDP_TX1N AMP_RESET_N HP_DET HP_3 3V_ON 4K_EDP_TX0P AUD_AMP_SDA AMP_3 3V_ON AMP_20V_ON 4K_EDP_TX0P 4K_EDP_TX1P 4K_EDP_TX1P 4K_EDP_TX3N HP_DET USB_HUB_...

Page 32: ... R614 1 8K 1 R624 24 9K 1 R602 180K OPT R611 15K 1 R633 100 R623 100 R646 4 7K OPT R621 30K 1 R618 100 R654 10K OPT R620 0 5 R601 47K OPT R642 4 7K OPT R653 0 R632 100K R626 7 5K R639 100K OPT R641 200K R650 18K 1 R603 47K OPT R610 47K 1 R651 5 6K 1 R655 10K OPT R616 100K OPT R644 27K 1 R606 10 R608 47K 1 R647 10K OPT R612 100 R600 180K OPT R629 9 1K 1 R645 4 7K OPT R649 120K 1 R627 51K 1 R605 100...

Page 33: ...B 13 EN 14 AGND 15 SW_3 16 SW_4 JP702 JP701 JP711 JP705 JP704 JP703 Q700 SSM3J332R S G D R737 100 R725 15K 1 R730 4 7K R728 10K R719 510K R706 100K R710 100 R700 100K R733 100 R701 7 5K R732 100K R717 100K R736 100K OPT R731 4 7K OPT R740 7 5K R723 5 6K 1 R707 100 R735 100K R711 20K R734 1K R746 14K 1 R720 10 R713 56K 1 R715 4 7K 1 R708 100 R704 100K OPT R702 9 1K 1 R741 100K R743 100K R739 14K 1 ...

Page 34: ...V C2808 1uF 25V C822 0 01uF 50V C2806 0 1uF 16V C811 2 2uF 10V C835 4 7uF 50V OPT C832 4 7uF 50V OPT C815 1uF 50V C820 220pF 50V C813 0 1uF 16V C2816 0 01uF 50V C2815 0 01uF 50V C2814 0 01uF 50V C821 1uF 50V C2809 2 2uF 10V C2813 0 01uF 50V C2810 220pF 50V C2812 1uF 25V C816 2 2uF 10V C806 1uF 10V C829 0 47uF 6 3V C819 220pF 50V P801 12507WS 06L De bug 1 2 3 4 5 6 7 D821 30V SMFB23H D2800 30V SMFB...

Page 35: ...2R S G D R906 200 R944 3 3K R947 49 9 1 R985 4 7K OPT R925 100K R931 0 R918 100K R941 10K OPT R926 100K OPT R937 0 R957 0 R914 100K R934 3 3K R940 10K OPT R965 1K R905 200 R975 0 R900 0 OPT R908 100 R933 10K OPT R961 0 OPT R935 2 2K R927 100K OPT R932 4 7K R938 0 R989 10K R987 100K R910 100K OPT R978 0 R942 1K R981 10K OPT R902 10K De bug R954 4 7K OPT R976 10K OPT R913 100K R936 2 2K R962 0 R916 ...

Page 36: ...VSS_ANA_61 D18 VSS_ANA_62 E4 VSS_ANA_63 E9 VSS_ANA_64 E11 VSS_ANA_65 E12 VSS_ANA_66 E13 VSS_1 F4 VSS_2 L9 VSS_3 L12 VSS_4 L15 VSS_5 M1 VSS_6 M2 VSS_7 M9 VSS_8 M12 VSS_9 M15 VSS_10 N9 VSS_11 N12 VSS_12 N15 VSS_13 R9 VSS_14 R12 VSS_15 R15 VSS_16 T6 VSS_17 T18 VSS_18 V16 VSS_19 V18 VSS_ANA_67 E15 VSS_ANA_68 E18 VSS_ANA_69 E22 VSS_ANA_70 E23 VSS_ANA_71 F1 VSS_ANA_72 F2 VSS_ANA_73 F5 VSS_ANA_74 F6 VSS_...

Page 37: ...01B04DPLR L4002 ACM2012 900H 2P 1 2 3 4 L4003 ACM2012 900H 2P 1 2 3 4 L4000 ACM2012 900H 2P 1 2 3 4 L4001 ACM2012 900H 2P 1 2 3 4 JK4000 USB3 1C STRAIGHT A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 25 JK4001 USB3 1C STRAIGHT A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 25 JP4001 JP4000 USB2_PB_P_BOTTOM USB2_PA_N_TOP TBTB_TX2_P USB2...

Page 38: ... 8K 1 R4149 2 2 R4136 220 R4135 2 2K OPT R125 1K R4122 1K R4129 0 OPT R4137 2 2K R4100 0 R4142 0 OPT R4130 15K R4123 1K R185 4 7K R4121 10K OPT R114 18K R4139 10K R4114 1K OPT R4128 0 OPT R4141 0 OPT R4124 2 2 4 7K OPT R4146 R4144 10 R4104 10 R4160 4 7K OPT R4147 0 OPT R4117 10K OPT R4110 1K OPT R4134 10K OPT R186 100 R4131 2 2K OPT R4120 10K R118 4 7K R4145 4 7K OPT R4159 33 R4127 4 7K OPT R4108 ...

Page 39: ... R4227 3 9K 1 R4201 0 R4204 0 OPT USB2_UFP_PA_P USB2_UFP_PA_N USB2_TR_PB_P USB2_UFP_PB_N USB2_UFP_PB_N USB2_UFP_PB_P USB2_PA_N USB2_UFP_PB_P USB2_PA_P USB2_TR_PB2E_P USB2_TR_PB2E_N USB2_TR_PB2B_P USB2_TR_PB_N USB2_TR_PA2E_P USB2_TR_PB2B_N USB2_TR_PA2E_N USB2_MUX_DM USB2_DFP_PB_N USB2_TR_PA2A_N USB2_TR_PA2A_P USB2_PA_P USB2_HUB_UFP_N USB2_HUB_UFP_P USB2_TR_PB2E_P USB2_PA_N USB2_TR_PA_N USB2_UFP_PA_...

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