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Standard Repair Process Detail Technical Manual

LCD Monitor connection diagram

A. Video error _Vertical/Horizontal bar, residual

image, light spot

As the part connecting to the external input, check the screen condition by signal

Established

date

Revised
date

Error
symptom

Content

[55VH7B/55VM5B/49VM5C]

Signage Monitor

A3

Copyright ⓒ 2016 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

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Содержание 49VM5C

Страница 1: ...Internal Use Only P NO CHASSIS MODEL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUAL MFL67237480 1607 REV01 49VM5C 49VM5C BD LW56C LG Digital Signage ...

Страница 2: ...Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 PRECAUTION 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 12 BLOCK DIAGRAM 19 EXPLODED VIEW 20 TROUBLE SHOOTING GUIDE APPENDIX ...

Страница 3: ... of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short circuit within the module If the surface of panel become dirty please wipe it off with a softmaterial Cleaning with a dirty or rough cloth may damage the panel WARNING BE CAREFUL ELECTRIC SHOCK If you want to replace with the new backlight or inverter circuit must disconnec...

Страница 4: ...on your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential 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 electrostatic charge ...

Страница 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...

Страница 6: ...are followed each drawing and specification by part number in accord ance with BOM 5 The receiver must be operated for about 20 minutes prior to the adjustment No Item Specification Remarks 1 Supported Sync Type Separate Sync Digital 2 Operating Frequency Analog Horizontal 30 83 kHz Vertical 56 75 Hz DVI OPS Horizontal 30 83 kHz Vertical 56 60 Hz HDMI Horizontal 30 83 kHz Vertical 56 60 Hz Display...

Страница 7: ...Wifi USB Input v2 0 1 For Wifi Device Component Input 1 Y Pb Pr Shared with D SUB 15Pin Composite AV Inputt 1 PAL SECAM NTSC Shared with D SUB 15Pin Audio In 1 PC DVI Audio In L R Stereo 3P 3 5mm Phone Jack 2 Output DP Out 1 4K 30P HDCP1 3 4K 30P Supporting color format RGB444 YCbCr444 8bit Audio Out 1 SE Stereo L R 0 5Vrms 3P 3 5mm Phone Jack 3 External Control RS 232C Input Output 1 1 UART Comm ...

Страница 8: ...32 32 64 224 832 x 624 V Lines 74 55 667 624 1 3 39 7 H Pixels 65 48 363 1344 1024 24 136 160 1024 x 768 V Lines 60 806 768 3 6 29 8 H Pixels 78 75 60 023 1312 1024 16 96 176 1024 x 768 V Lines 75 029 800 768 1 3 28 9 H Pixels 81 75 53 783 1520 1152 64 120 184 1152 x 864 V Lines 59 959 897 864 3 4 26 10 H Pixels 74 25 45 1650 1280 110 40 220 1280 x 720 V Lines 60 750 720 5 5 20 11 H Pixels 108 63 ...

Страница 9: ...59 94 525 480 10 2 33 2 H Pixels 40 37 879 1056 800 40 128 88 800 x 600 V Lines 60 317 628 600 1 4 23 3 H Pixels 65 48 363 1344 1024 24 136 160 1024 x 768 V Lines 60 806 768 3 6 29 4 H Pixels 81 75 53 783 1520 1152 64 120 184 1152 x 864 V Lines 59 959 897 864 3 4 26 5 H Pixels 74 25 45 1650 1280 110 40 220 1280 x 720 V Lines 60 750 720 5 5 20 6 H Pixels 83 5 49 702 1680 1280 72 128 200 1280 X 800 ...

Страница 10: ...4 1024 24 136 160 1024 x 768 V Lines 60 806 768 3 6 29 4 H Pixels 81 75 53 783 1520 1152 64 120 184 1152 x 864 V Lines 59 959 897 864 3 4 26 5 H Pixels 74 25 45 1650 1280 110 40 220 1280 x 720 V Lines 60 750 720 5 5 20 6 H Pixels 85 5 47 712 1792 1366 70 143 213 1366 x 768 V Lines 59 79 798 768 3 3 24 7 H Pixels 108 63 981 1688 1280 48 112 248 1280 x 1024 V Lines 60 02 1066 1024 1 3 38 8 H Pixels ...

Страница 11: ... H Pixels 85 5 47 712 1792 1366 70 143 213 1366 x 768 V Lines 59 79 798 768 3 3 24 8 H Pixels 108 63 981 1688 1280 48 112 248 1280 x 1024 V Lines 60 02 1066 1024 1 3 38 9 H Pixels 108 60 1800 1600 24 80 96 1600 x 900 V Lines 60 1000 900 1 3 96 10 H Pixels 146 25 65 29 2240 1680 104 176 280 1680 x 1050 V Lines 59 954 1089 1050 3 6 30 11 H Pixels 148 5 67 5 2200 1920 88 44 88 1920 x 1080 V Lines 60 ...

Страница 12: ...e also performed in Final Assembly if needed Both Board level and Final assembly adjustment items can be check using In Star Menu 1 AD JUST CHECK RGB PC Adjust will be calculated by 480i adjust value 3 2 Final Assembly adjustment White Balance adjustment RS 232C functionality check Factory Option setting per destination Ship out mode setting In Stop 3 3 Etc Ship out mode Service Option Default Too...

Страница 13: ... 2 LAN inspection solution 1 LAN Port connection with PCB 2 Network setting at MENU Mode of SET Installer Menu 119 253 Menu 3 Setting automatic IP 4 Setting state confirmation If automatic setting is finished you confirm IP and MAC Address 4 4 LAN PORT INSPECTION PING TEST 4 4 1 Equipment setting 1 Play the LAN Port Test PROGRAM 2 Input IP set up for an inspection to Test Program IP Number 12 12 2...

Страница 14: ...condition retry calibration 5 2 EDID DDC Download EDID PCM 5 2 1 Overview It is a VESA regulation A PC or a MNT will display an optimal resolution through information sharing without any necessity of user input It is a realization of Plug and Play 5 2 2 Equipment Since embedded EDID data is used EDID download JIG HDMI cable and D sub cable are not need Adjust remocon 5 2 3 Download method 1 Press ...

Страница 15: ... Sum 0X60 0xC5 5 3 White Balance Adjustment 5 3 1 Overview W B adj Objective How it works Objective To reduce each Panel s W B deviation How it works When R G B gain in the OSD is at 192 it means the panel is at its Full Dynamic Range In order to prevent saturation of Full Dynamic range and data one of R G B is fixed at 192 and the other two is lowered to find the desired value Adj condition norma...

Страница 16: ...MIN MAX Cool R Gain j g 00 C0 172 G Gain j h 00 C0 172 B Gain j i 00 C0 192 R Cut 64 G Cut 64 B Cut 64 Medium R Gain j a 00 C0 192 G Gain j b 00 C0 172 B Gain j c 00 C0 172 R Cut 64 G Cut 64 B Cut 64 Warm R Gain j d 00 C0 192 G Gain j e 00 C0 172 B Gain j f 00 C0 172 R Cut 64 G Cut 64 B Cut 64 5 3 5 Adj method 5 3 5 1 Auto WB calibration 1 Set in adj mode using POWER ON P ONLY key 2 Zero calibrate...

Страница 17: ... 313 330 8 50 79 269 274 279 293 313 329 9 80 119 269 273 279 293 313 329 10 Over 120 269 273 279 292 313 329 5 4 Ship out mode check In stop After final inspection press In Stop key of the Adj R C and check that the unit goes to Stand by mode 6 GND and HI POT Test 6 1 Method 1 GND HI POT auto check preparation Check the Power Cable and Signal Cable insertion condi tion 2 GND HI POT auto check a P...

Страница 18: ...ADJ remote after at least 1 min of signal reception Then select 7 External ADC And Press OK or Right Button for going to sub menu 5 Press OK in Comp 480i menu 6 Give a 1080p Mode Horizontal 100 Color Bar Pattern to Comp1 MSPG 925FA Model 225 Pattern 65 7 Press OK in Comp 1080p menu 8 If ADC Comp is successful ADC Component Success is displayed 9 If ADC calibration is failure ADC Component Fail is ...

Страница 19: ... 19 Copyright LG Electronics Inc All rights reserved Only for training and service purposes BLOCK DIAGRAM ...

Страница 20: ... mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFETY NO...

Страница 21: ......

Страница 22: ...TROUBLESHOOTING GUIDE Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 23: ...ice color error 5 B Power error No power 6 Off when on off while viewing power auto on off 7 C Function error Remote control Local switch checking 8 External device recognition error 9 D Noise Circuit noise mechanical noise 10 E Exterior error Exterior defect First of all Check whether there is SVC Bulletin in GSCS System for these model Copyright ⓒ 2016 LG Electronics Inc All right reserved Only ...

Страница 24: ...Board or parts End Always check 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 Signage Monitor Error symptom A Video error No video Normal audio A1 A2 A0 A2 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D ...

Страница 25: ...ce MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A1 Established date Revised date Error symptom Signage Monitor Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 26: ...ice and cable Y External device Cable normal RGB DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A8 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 Error symptom Signage Monitor Copyright ⓒ 2016 LG Electronics Inc All right reserved ...

Страница 27: ...y connecting Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input HDMI RGB DVI DP Request repair for external device RGB error HDMI DVI error Connect other external device and cable Check normal operation of External Input Component and HDMI DVI RGB by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen normal ...

Страница 28: ...ltage of each output of Power B D N Y Normal voltage Replace Main B D Y OK Replace Main B D N Y Normal Check ST BY 3 5V at Main B D And Power output voltage Replace Power B D N Y Normal voltage Replace Power B D Y A6 A8 A6 Standard Repair Process Established date Revised date Error symptom Close Signage Monitor Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service pu...

Страница 29: ...OWEROFF_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_UNKNOWN Power off by unknown status except listed case Abnormal POWEROFF_ABNORMAL1 Power off by abnorma...

Страница 30: ...ection Connector solder Normal operating Check B 3 5V On Main B D A10 Normal Voltage Close N N Check12V on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A6 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A10 Replace Main B D Y A10 Standard Repair Process Established date Revised date Error symptom Y 1 Remote control R C operating error Signage Monito...

Страница 31: ...ce cable HDMI RGB DVI DP Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information C Function error External device recognition error Established date Revised date Error symptom Standard Repair Process Signage Monitor Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 32: ...ceed as shown in the solution 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 D Noise Circuit noise mechanical noise Established date Revised date Error s...

Страница 33: ...ce remote control Remote control damage Stand dent Replace stand E Exterior error Exterior defect Established date Revised date Error symptom Standard Repair Process Signage Monitor Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 34: ... White Balance value A Video error_No video Normal audio ALL MODELS Established date Revised date Error symptom Content Entry method 1 Press the ADJ button on the remote control for adjustment 2 Enter into White Balance of item 11 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 Signage Monitor A0 Copyright ⓒ 2016 LG Electr...

Страница 35: ...nitor 24 Pin Power Board Main Board Type SMAW200 H24S5K BLACK Maker YEONHO Pin No Signal Pin No Signal 1 PWR 2 24V 3 24V 4 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 N C 17 12V 18 INV ON 19 12V 20 N C 21 12V 22 P DIM 23 A DIM 24 ERR A1 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 36: ...1 Checking method for remote control for adjustment Press the IN START with the remote control for adjustment Version ALL MODELS Established date Revised date Error symptom Content Signage Monitor A2 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 37: ...r residual image light spot As the part connecting to the external input check the screen condition by signal Established date Revised date Error symptom Content 55VH7B 55VM5B 49VM5C Signage Monitor A3 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 38: ... Video error_Color error Check the contact condition of the Link Cable especially dust or mis insertion Established date Revised date Error symptom Content Signage Monitor A4 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 39: ...s using 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 Established date Revised date Error symptom Content Signage Monitor A5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 40: ...defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Appendix Exchange LVDS Cable or Main B D 1 A 1 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 41: ...ion Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange LVDS Cable or Main B D 2 A 2 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 42: ...icture Sound Ok Appendix Exchange Power Board No Light Dim Light Dim Light Dim Light A 3 5 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 43: ...s damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage A 4 5 Un repairable Cases In this case please exchange the module Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 44: ... Source TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Appendix Exchange the Module 2 A 5 5 Un repairable Cases In this case please exchange the module Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 45: ... 4 9 10 11 12 17 18 19 21Pin 24 Pin Power Board Main Board Type SMAW200 H24S5K BLACK Maker YEONHO Pin No Signal Pin No Signal 1 PWR 2 24V 3 24V 4 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 N C 17 12V 18 INV ON 19 12V 20 N C 21 12V 22 P DIM 23 A DIM 24 ERR A6 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Int...

Страница 46: ...ge Monitor 24 Pin Power Board Main Board Type SMAW200 H24S5K BLACK Maker YEONHO Pin No Signal Pin No Signal 1 PWR 2 24V 3 24V 4 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 N C 17 12V 18 INV ON 19 12V 20 N C 21 12V 22 P DIM 23 A DIM 24 ERR A7 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 47: ...tandard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS Established date Revised date Error symptom Content Signage Monitor A8 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 48: ...Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS Established date Revised date Error symptom Content Signage Monitor Press the Settings or Menu Button over then 5 Sec Appear square on top right 1 Press the 0 4 times 2 Press the OK Button A9 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and service purpo...

Страница 49: ...fective when it does not move at all Standard Repair Process Detail Technical Manual remote control operation checking method D Function error_ No response in remote control key error Established date Revised date Error symptom Content JK101 M1 IR M2 NC M3 3 5V_ST JK101 55VH7B 55VM5B 49VM5C Models Signage Monitor A10 Copyright ⓒ 2016 LG Electronics Inc All right reserved Only for training and serv...

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