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LG Electronics Inc. All rights reserved.

Only training and service purposes.

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Содержание 27GL850-BB

Страница 1: ...AL LM61C 27GL850 27GL850 BB Any reproduction duplication distribution including by way of email facsimile or other electronic means publication modification copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes...

Страница 2: ...ctronics Inc All rights reserved Only training and service purposes CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 6 BLOCK DIAGRAM 7 EXPLODED VIEW 8 DISASSEMBLY 9 TROUBLE SHOOTING GUIDE 11 CONTENTS ...

Страница 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...

Страница 4: ...calibration 7 Power Cord Length 1 55 0 05 M Shape Wall out Color Black Weight 0 16kg 10 6 HDMI Length 1 5m 0 05m Shape Detachable Type Color Black EAD63954401 8 Cable CONNECTOR 100 Ω None DisplayPor t Length 1 5m 0 05m Shape Detachable Type Color Black Weight 0 095kg 10 EAD63749401 CABLE 100Ω 5Ω P N EAY62990913 9 Power Input AC90 264V 47 63Hz Output DC 19V 3 42A 65W Ad t 10 SET accessory Refer to ...

Страница 5: ...280 16 144 248 V Lines 75 025 1066 1024 1 3 38 H Pixels 45 1650 1280 110 40 220 V Li 60 750 720 5 5 20 8 83 5 1280 x 800 HDMI DP 9 91 1280 x1024 HDMI DP 10 135 1280 x 1024 HDMI DP 11 74 25 1280 x 720 HDMI DP V Lines 60 750 720 5 5 20 H Pixels 60 1800 1600 24 80 96 V Lines 60 1000 900 1 3 96 H Pixels 64 674 1840 1680 48 32 80 V Lines 59 883 1080 1050 3 6 21 H Pixels 67 5 2200 1920 88 44 148 V Lines...

Страница 6: ... 6 Copyright LG Electronics Inc All rights reserved Only training and service purposes BLOCK DIAGRAM ...

Страница 7: ...related 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 900 920 930 300 200 500 510 910 400 330 540 ...

Страница 8: ...ion tool jig 2 Stand Assembly Separation 1 Place the monitor s screen face down on a soft plane 2 Release the screw and disassemble the base 3 Release the screw and disassemble the base 3 Back cover Assembly w e r c s a e 4 e l b m e s s a s i D 4 Use hand disassemble bottom side of cabinet then disassemble the back cover 5 6 ...

Страница 9: ... 9 Copyright LG Electronics Inc All rights reserved Only training and service purposes 7 Remove screws and detach the latches and lines 8 Disassemble the cabinet ...

Страница 10: ...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 ...

Страница 11: ... 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 ...

Страница 12: ...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 ...

Страница 13: ...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 ...

Страница 14: ... INC MONITOR DIVISION Establish 2019 03 29 LM61C ADJUSTMENT SPECIFICATION 1 11 Revision 1 LG electronics LM61C Adjust Specification 27GL850 Home Entertainment Company Monitor PC BD Monitor Dev Lab LG ELECTRONICS INC ...

Страница 15: ...ory No Date Revised by Cause List Remark 1 2019 03 29 BJ kang Established 2 2019 04 03 BJ kang 3 2019 05 07 Lijiwei Add module selection 4 2019 05 07 Lijiwei Change cool color y value 5 2019 05 07 BJ kang Change luminance value 6 2019 05 08 BJ kang Change white balance gammma adjust Note Refer to ECO about detail of revision history ...

Страница 16: ...ON Establish 2019 03 29 LM61C ADJUSTMENT SPECIFICATION 3 11 Revision 1 LG electronics CONTENTS 1 Application 2 Designation 3 Main PCB check process 4 Total Assembly line process 5 Shipping condition 6 Signal composition for adjustment ...

Страница 17: ...n agreeing 2 2 Power Adjustment Free Voltage 2 3 Magnetic Field Condition Nil 2 4 Input signal 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 UA 10 DDC Adjustment Jig equipment 3 Main PCB check process APC After Manual Insu...

Страница 18: ...7 00 00 for others set 0ff b Check the Automatic Standby time setting value by adjustment jig equipment Please check the value of 0xA6 0xEE address Value 0x00 OFF 0x04 Set 4H 4 4 Gamma adjustment Adjust PRESET Warm 6500K Color coordinates Set the CA 210 for calibration Set the internal White Pattern by commanding WHITEBALANCE_START Command code Set as Warm 6500K by commanding COLOR_MODE_CHANGE Com...

Страница 19: ...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 make circumstance as below 4 3 DPM Operation check Measurement Condition 100 240V 50 60Hz 1 Set Input to DisplayPort HDMI1 ...

Страница 20: ...ime Fast Cross Hair Off Game Reset No Picture Adjust Brightness 100 Contrast 70 Sharpness 50 Gamma Mode 2 Color Temp Custom R G B 50 50 50 Black Level Depending on input signal High RGB format Low YUV format DFC Off Picture Reset No Input Input List HDMI1 Aspect Ratio Full Wide General Language Depend on the sale region SMART ENERGY SAVING Low Power LED Off Automatic Standby Off EU EK PD EW MA 4H ...

Страница 21: ...MD hex ADR VAL hex Explanation 1 EEPROM ALL INITIAL E4 00 00 adjustment Initialization 2 EEPROM READ E7 Slave add At EEPROM Read 3 EEPROM WRITE E8 Slave add Data Write data at EEPROM 4 R GAIN 16 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 co...

Страница 22: ...panese 0F Korean 11 Traditional Chinese 17 EDID SN UPDATE 0x77 0 0x01 0x02 0x01 HDMI1 0x02 HDMI2 18 HDCP 2 2 write F9 00 00 Write HDCP 2 2 key 19 HDCP 2 2 read F8 data Read HDCP 2 2 key 20 Send Serial data 75 data Send 24 byte EDID SN 4byte date 2byte Ascii SN 18byte 21 Read C s of Serial data 76 data Read checksum data of 24 byte 22 Module selection LM270WQA SSA1 6 5 EEPROM Data Write 6 5 1 Sigan...

Страница 23: ...dL VtotalH VtotalL SrcHTotalH SrcHTotalL SrcHStartH SrcHStartL SrcVStartH SrcVStartL HsyncPhase Temporary Data write Write to particular address of EEPROM 6 6 E2 PROM Data Read 6 6 1 Signal TABLE STOP A A A A A 50 6E 03 CMD ADH 84 START A A ADL A CS Delay 150ms 128 Bytes 6 6 2 COMMAND SET No Adjustment contents CMD hex ADH hex ADL hex Explanation 1 EEPROM READ E7 A0 0 0 Page 0 7F Read 2 80 0 Page ...

Страница 24: ... 0 7F Read 16 80 7 Page 80 FF Read 6 6 3 Use Read E2 PROM s specific area as unit of 128 80h byte 84h 6 6 4 EDID Write EEPROM access by using DDC2B protocol 1 Byte write STOP A L A0 D START A A L 0x00 0x7F D data 8 byte write START A0 A L A Data1 A A A Data8 STOP L 0x00 0x10 0x70 6 6 5 EDID Read DDC2B Command A0 A1 START A0 A 00 START A1 A Data1 Data128 A CS A STOP 128 Byte transfer of EDID Buffer...

Страница 25: ...P DP_RX1N DP_RX1P DP_RX0N DP_RX0P DP_RX3N VR107 10pF 18V OPT AR109 3 3K 3 3V_NORMAL D102 BAT54C_TSC A2 C A1 HDMI2_5V R138 1K R109 0 5V_STANDBY R124 0 OPT R120 10K JP100 R139 0 HDMI1_RX2 JP101 HDMI1_SDA JP102 JP103 HDMI1_DET JK101 HDM2LB 19BG2RN3G 14 NC 13 CEC 5 DATA1_SHIELD 20 SHIELD 12 CLK 11 CLK_SHIELD 2 DATA2_SHIELD 19 HPD 18 5V_POWER 10 CLK 4 DATA1 1 DATA2 17 DDC CEC_GND 9 DATA0 8 DATA0_SHIELD...

Страница 26: ...AVDDL_MOD_1 121 LVD4M HTPDN 122 LVD4P LOCKN 123 LVD3M 124 LVD3P 125 AVDD_MOD_1 126 GND_17 127 LVDCKM 128 LVDCKP 129 LVD2M 130 LVD2P 131 LVD1M 132 LVD1P 133 LVD0M 134 LVD0P 135 AVDD_MOD_2 136 AVDDL_PREDRV_2 137 GND_18 138 AVDDL_MOD_2 139 LVC4M 140 LVC4P 141 LVC3M 142 LVC3P 143 LVCCKM VBY1_7 EDP7 144 LVCCKP VBY1_7 EDP7 145 LVC2M VBY1_6 EDP6 146 LVC2P VBY1_6 EDP6 147 LVC1M VBY1_5 EDP5 148 LVC1P VBY1_...

Страница 27: ... 16V OPT C235 0 1uF 16V VDD_DRAM_A C114 10uF 10V C241 0 1uF 16V C154 0 1uF 16V OPT C252 0 1uF 16V OPT C181 10uF 10V OPT C245 0 1uF 16V C134 0 1uF 16V C130 0 1uF 16V C191 0 1uF 16V C123 10uF 10V C206 0 1uF 16V OPT C160 0 1uF 16V OPT 1 8V_DDR C196 0 1uF 16V C133 0 1uF 16V C142 0 1uF 16V 1 15V_VDD_DDR_B C232 1uF 10V AVDD_DP C170 0 1uF 16V C227 10uF 10V OPT C209 0 1uF 16V C163 0 1uF 16V OPT C248 1uF 1...

Страница 28: ...V C432 0 47uF 50V R430 100 C434 0 1uF 16V C436 10uF 10V C431 0 1uF 16V 1 8V_DDR C435 10uF 10V IC403 MP2122AGJ 3 SW2 2 EN2 4 EN1 1 FB2 5 GND 6 SW1 7 IN 8 FB1 R429 10K OPT C433 0 1uF 50V ZD403 2 5V R428 10K OPT C437 10uF 10V 5V_STANDBY PD_CTLZ_1 8V R431 100 1 15V_VDD R432 200K R426 33K 1 Q400 T2N7002AK S G D Q402 T2N7002AK S G D L403 10 0uH R400 120K 1 IC400 MP2315S OPT 3 SW 2 IN 4 GND 1 AAM 5 BST 6...

Страница 29: ... 1uF 10V L505 BLM18PG121SN1D AUD_SCK AUD_LRCK C547 1000pF 50V HP_MUTE C535 22uF 16V AUD_DATA C551 4 7uF 10V R550 0 OPT HP_SDA C539 220pF 50V C553 1uF 10V C552 220pF 50V HP_LOUT C546 0 1uF 16V HP_ROUT C538 1uF 10V R524 0 R525 0 C545 22uF 16V R526 0 R527 0 3 3V_HP_AMP R553 0 3 3V_HP_AMP 3 3V_HP_AMP R532 47K C540 22pF 50V R552 0 C537 22pF 50V ALC5629 IC501 1 LINE_OUT_L 3 NC_1 7 SDAC 9 XTO 10 DGND 11 ...

Страница 30: ...7K 1 34GL750 D701 100V BR210 19V R747 1K C733 4 7uF 25V 19V L705 33uH IC701 MP3378E MP3378E_OLD 3 ISET 2 OSC 4 ADIM 1 GND1 6 LED3 5 LED4 7 LED2 8 LED1 9 OVP 10 NC_1 11 NC_2 12 FB 13 EN2 14 VCC2 15 VIN2 16 SW 17 GND2_1 18 GND2_2 19 AGND 20 BST 21 SYNC 22 ISENSE 23 GATE 24 VIN1 25 VCC1 26 COMP 27 EN1 28 PWM 29 EP GND WLED_ADIM ZD701 5 6V R741 100 WLED_ENABLE R751 5 6K 1 R740 51K R754 0 1 1W 1 WLED_P...

Страница 31: ...3 X TAL_2 C920 0 1uF 16V C946 0 01uF 50V C927 0 01uF 50V C911 1uF 10V 3 3V_HUB R942 10K OPT OCS_DN2 C939 0 01uF 50V OCS_DN1 R927 10 VBUS_DET R914 4 7K OPT VBUS_DET USB_UP_TX R948 1K R941 10K OPT R929 10 C931 0 1uF 16V R917 4 7K OPT EN_DN1_PWR R949 1K R938 10K OPT R910 1M 1 R933 10 USBDN_DM1 C935 0 01uF 50V 3 3V_HUB USB_UP_TX R904 4 7K R902 4 7K C943 10uF 10V R962 100K R957 47K EN_DN2_PWR R958 6 8K...

Страница 32: ...003 0 1uF 16V IC1000 LPC11U68JBD48 1 RTCXOUT 2 VSS_1 3 RESET PIO0_0 4 PIO0_1 5 VSS_2 6 PIO2_0 XTALIN 7 PIO2_1 XTALOUT 8 VDD_1 9 PIO2_5 10 PIO0_20 11 PIO0_2 12 PIO2_2 13 PIO1_20 14 PIO0_3 15 PIO0_4 16 PIO0_5 17 PIO0_21 18 PIO1_23 19 USB_DM 20 USB_DP 21 PIO2_7 22 PIO1_24 23 PIO0_6 24 PIO0_7 25 PIO1_21 26 PIO0_8 27 PIO0_9 28 SWCLK PIO0_10 29 PIO0_22 30 TDI PIO0_11 31 TMS PIO0_12 32 TDO PIO0_13 33 TRS...

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