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Haier HL24XP1 Service Manual Download Page 47

8-2-5. Gamma

Gamma: 
Bright GAMMA0.8  Middle  default settings in the program  Dark GAMMA1.2

8-2-6. Backlight

Backlight: adjust the backlight.

  Service Manual

  Model No.: HL24XP1

46

Summary of Contents for HL24XP1

Page 1: ...ervice a product Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death Haier Group 2009 Qingdao Haier Electronics Co Ltd All rights reserved Unauthorized copying and distribution is a violation o...

Page 2: ...8 Photo used in this manual 6 1 4 How to Read this Service Manual 6 1 4 1 Using icons 6 KDSWHU 6SHFL FDWLRn 6SHFL FDWLRQ OLVW 8 2 2 External pictures four faces 9 Chapter 3 Disassemble and Assemble 11 11 11 11 12 12 12 12 Chapter 4 Location of Controls and Components 4 1 Board Location 13 4 2 Main Board 13 4 2 1 Function Description 14 RQQHFWRU GH QLWLRQ 14 3 1 Remove the Pedestal 3 2 Remove the F...

Page 3: ...ram 25 7 2 Circuit Diagram 26 7 3 Wiring Connection Diagram 41 Chapter 8 Measurements and Adjustments 8 1 Service Mode 42 8 1 1 How to enter into Service Mode 42 8 1 2 How to exit 42 8 2 Measurements and Adjustments 42 8 2 1 Version S N Panel Resoution 42 8 2 2 Video 43 8 2 3 Audio 44 8 2 4 Channel 44 8 2 5 Gamma 56 8 2 6 Backlight 56 8 2 7 Function 57 Chapter 9 Trouble shooting 9 1 Simple check 4...

Page 4: ...ant thing is to list up the potential hazard or risk for the service personnel to open the units and disassemble the units For example we need to describe properly how to avoid the possibility to get electrical shock from the live power supply or charged electrical parts even the power is off This symbol indicates that high voltage is present inside It is dangerous to make any king of contact with...

Page 5: ...nder test IWHU UHPRYLQJ DQ HOHFWULFDO DVVHPEO HTXLSSHG ZLWK 6 GHYLFHV SODFH WKH DVVHPEO RQ D conductive surface such as aluminum foil to prevent electrostatic charge buildup or exposure of the assembly 1 3 4 About lead free solder PbF This product is manufactured using lead free solder as a part of a movement within the consumer products industry at large to be environmentally responsible Lead fre...

Page 6: ...lcohol 90 99 strength CAUTION 7KLV LV D ÀDPPDEOH PL WXUH 8QOHVV VSHFL HG RWKHUZLVH LQ WKLV VHUYLFH PDQXDO OXEULFDWLRQ RI FRQWDFWV LV QRW UHTXLUHG Capacitors may result in an explosion hazard 5 Do not defeat any plug socket B voltage interlocks with which receivers covered by this VHUYLFH PDQXDO PLJKW EH HTXLSSHG 6 Do not apply AC power to this instrument and or any of its electrical assemblies unl...

Page 7: ...Minimize bodily motions when handling unpackaged replacement ES devices Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot IURP D FDUSHWHG ÀRRU FDQ JHQHUDWH VWDWLF HOHFWULFLW VXI FLHQW WR GDPDJH DQ 6 GHYLFH 1 3 7 Ordering Spare Parts Please include the following informations when you order parts Particularly the Version letter 1 Model number ...

Page 8: ...SXODWLRQ PD GDPDJH HTXLSPHQW ORRVH GDWD JHW DQ XQH SHFWHG UHVXOW RU KDV WR restart part of a procedure Warning A warning is used when there is danger of personal injury Reference A reference guides the reader to other places in this binder or in this manual where KH VKH ZLOO QG DGGLWLRQDO LQIRUPDWLRQ RQ D VSHFL F WRSLF ...

Page 9: ...et Channels 181 OSD Language English French Spanish Color System NTSC Audio System M BG I L L Audio Output Power Built in W 3W 2 Audio Output Power outer W No Total Power Input W 60W Voltage Range V AC100V 240V 3RZHU UHTXHQF 60Hz Time of Sleep Timer MINS 120Min Net Weight KG 6 0 Gross Weight KG 7 0 Net Dimension MM 600x160x500 Packaged Dimension MM 655x170x520 KDSWHU 6SHFL FDWLRQ 6SHFL FDWLRQ OLVW...

Page 10: ...Service Manual Model No HL24XP1 9 2 2 External pictures four faces Front Side Left Side ...

Page 11: ...Service Manual Model No HL24XP1 10 Right Side Back Side ...

Page 12: ...edestal indicated with Then remove the pedestal Remover the eight screw indicated with Turn to front cover upwards Then remove the front cover from the unit Remover the six screw indicated with Remover the pin indicated with Then remove the panel 3 1 Remove the Pedestal 3 2 Remove the Front Cover 3 3 Remove the LCD Panel 3 4 Remove the Main Board ...

Page 13: ...dicated with Then remove the Keypad Assembly Remover the four screw indicated with Remover Sponge piece Then remove the Speaker l Remover the one screw indicated with Then remove the Remote Control Board 3 5 Remove the Power Supply Board 3 6 Remove the Speaker 3 7 Remove the Keypad Assembly 3 8 Remove the Remote Control Board ...

Page 14: ...hapter 4 Location of Controls and Components 4 1 Board Location No Parts number Description A Board DC18E0E0200M Main Board B Board B Power Supply Board 4 2 Main Board Service Manual Model No HL24XP1 13 ...

Page 15: ...turn off the backlight of TFT LCD Panel through the power supply unit path System board will use this pin to control system power CN1 Pin 4 Control the luminance of backlight The system can generate the PWN signal to control the strength of TFT LCD Panel s backlight through this connector CN2 CN3 Pin number Signal name Pin number Signal name 1 SB5V 1 GND 2 IR 2 AD1 3 LED_R 3 AD2 4 LED_G 5 GND Keyp...

Page 16: ...VDS EVEN 2 Signal 12 LVDS_D2E_P LVDS EVEN 2 Signal 13 GND Ground 14 LVDS_CE_N LVDS EVEN Clock Signal 15 LVDS_CE_P LVDS EVEN Clock Signal 16 GND Ground 17 LVDS_D3E_N LVDS EVEN 3 Signal 18 LVDS_D3E_P LVDS EVEN 3 Signal 19 GND Ground 20 NC NC 21 NC NC 22 NC NC 23 GND Ground 24 GND Ground 25 GND Ground 26 Panel_power Power for panel 27 Panel_power Power for panel 28 Panel_power Power for panel 29 Pane...

Page 17: ...o HL24XP1 16 Power supply and Inverter Connector CNC1 Pin number Signal name Description 1 1 Ground 1 Ground 867 19 57 5 LJKWQHVV GMXVW 21 2 19 57 5 6ZLWFK RQWURO 9 9 Power 9 9 Power Other Connector AC120V AC240V Input CNC2 Power supply for panel CNC3 Power supply for panel CNC4 Power supply for panel CNC5 Power supply for panel CNC6 4 4 LCD Panel ...

Page 18: ...Service Manual Model No HL24XP1 17 Panle LVDS Connector CNC3 ...

Page 19: ...e picture quality from an antenna in a poor signal area install a signal amplifier If you need to split the antenna signal to connect two TVs install a two way splitter Choose Your Connection There are several ways to connect your television depending on the components you want to connect and the quality of the signal you want to achieve The following are examples of some different ways to connect...

Page 20: ...e associated with the resolution vertical pattern contrast or brightness in PC mode If noise is present change the PC mode to another resolution change the refresh rate to another rate or adjust the brightness and contrast on the menu until the picture is clear If the refresh rate of the PC graphic card can not be changed change the PC graphic card or consult the manufacturer of the PC graphic car...

Page 21: ...ow Audio Left white and Audio Right red 2 Select the input source by using the button on the remote control 3 Select your desired channel with the remote control for cable box INPUT COMPONENT IN Pr Pb Y ATN IN R AUDIO L R AUDIO IN L S VIDEO IN VIDEO R AUDIO IN L VIDEO External Component Source Setup How to connect Connect the audio and video cables from the external equipment s output jacks to the...

Page 22: ... product 2 A separated audio connection is necessary 3 If the source device has an analog audio output connector connect the source device audio output to DVI Audio In port located on the left side of HDMI port How To Use If the source device supports Auto DVI function the output resolution of the source device will be automatically set to 1280x720p If the source device does not support Auto DVI y...

Page 23: ...eadphone out S VIDEO Power source TO USE AC POWER SOURCE Use the AC polarized line cord provided for operation on AC Insert the AC cord plug into a standard polarized AC outlet NOTES Ƶ Never connect the AC line cord plug to other than the specified voltage Use the attached power cord only Ƶ If the polarized AC cord does not fit into a non polarized AC outlet do not attempt to file or cut the blade...

Page 24: ...r AUDIO Pressing the corresponding button on the remote control COMPONENT IN Pr Pb Y ATN IN R AUDIO L R AUDIO IN L PCAUDIOIN VGA IN USB HDMI S VIDEO IN VIDEO 1 ANT IN Antenna Input Connect cable or antenna signals to the TV either directly or through your cable box 2 Headphone jack Headphone audio output terminal 3 Audio in Connect audio output from an external device to these jacks 4 S VIDEO Conn...

Page 25: ... channel list in TV 25 Press to change the aspect ratio 26 Press to change a channel 27 Press to select digital channels For example to enter 54 3 press 54 and 3 28 Press to jump back and forth between two channels 29 Press to scan through channels To scan quickly between the last two channels press and hold down either 30 Exit On Screen Display 31 Accesses the highlighted item in the on screen me...

Page 26: ...ectrical Parts 7 1 Block Diagram 25 HDMI1 VGA YPbPr S Video tuner Composite MT 5 3 8 0 LC Main IC YPbPr Composite L R VGA P11 L R DDR Flash TDA1517 P A N E L USB LVDS EEPROM I2C Bus Service Manual Model No HL24XP1 ...

Page 27: ..._0402_10pF D3 NS ESD_0402_10pF 1 2 TP23 TEST COPPER TEST TP23 TEST COPPER TEST TP20 TEST TP20 TEST C628 100pF C0402 SMD C628 100pF C0402 SMD TP93 TP93 U58 NTMD4840 U58 NTMD4840 3 2 1 4 6 5 8 7 FB11 FB C0805 SMD FB11 FB C0805 SMD TP89 TP89 C701 0 1uF C701 0 1uF 1 2 R1696 0 R0603 SMD R1696 0 R0603 SMD R1700 4 7K R0603 SMD R1700 4 7K R0603 SMD R1689 10K R0603 SMD R1689 10K R0603 SMD D4 NS ESD_0402_10...

Page 28: ...adj SOT223 SMD U1 AZ1117 adj SOT223 SMD ADJ GND 1 OUT 2 IN 3 CB6 0 1uF C0402 SMD CB6 0 1uF C0402 SMD CE71 220uF 16v C220UF10V D6 3H7 CE71 220uF 16v C220UF10V D6 3H7 C302 100nF C0402 SMD C302 100nF C0402 SMD U11 LT1084 TO 252 3 TO 252 3 SMD U11 LT1084 TO 252 3 TO 252 3 SMD IN 3 ADJ GND 1 OUT 2 CB8 0 1uF CB8 0 1uF CE33 470uF 16V C470UF16V D8H9 CE33 470uF 16V C470UF16V D8H9 CE654 220uF 16v CE654 220u...

Page 29: ... 3H7 CE96 220uF 16V C220UF10V D6 3H7 U10 AZ1117 adj SOT223 SMD U10 AZ1117 adj SOT223 SMD ADJ GND 1 OUT 2 IN 3 CB18 0 1uF C0402 SMD CB18 0 1uF C0402 SMD CB229 0 1uF C0402 SMD CB229 0 1uF C0402 SMD C540 NC 330pF C0402 SMD C540 NC 330pF C0402 SMD D22 NC NS 1N4148 D22 NC NS 1N4148 R436 NC 2K R436 NC 2K C324 1uF C0603 SMD C324 1uF C0603 SMD C537 NC 330pF C537 NC 330pF R19 0 R0603 SMD R19 0 R0603 SMD CB...

Page 30: ...C0402 SMD D5 1N4148 D5 1N4148 R1886 10K R0603 SMD R1886 10K R0603 SMD R198 10K R0603 SMD R198 10K R0603 SMD R43 0 R43 0 C532 1nF C0402 SMD C532 1nF C0402 SMD CB72 0 1uF C0402 SMD CB72 0 1uF C0402 SMD CE37 220uF 16v C220UF10V D6H11 CE37 220uF 16v C220UF10V D6H11 R72 0R R0603 SMD R72 0R R0603 SMD Y1 60MHz CRYS 49US P4 88 Y1 60MHz CRYS 49US P4 88 U13B MT5380 SMD LQFP LQFP256 SMD 5380 9 U13B MT5380 SM...

Page 31: ... 7uF 10V C0805 SMD CA35 4 7uF 10V C0805 SMD RNA12 75x4 RN0603 SMD RNA12 75x4 RN0603 SMD 1 2 3 4 5 6 7 8 RA7 75 R0603 SMD RA7 75 R0603 SMD RA8 75 R0603 SMD RA8 75 R0603 SMD RNA16 75x4 RN0603 SMD RNA16 75x4 RN0603 SMD 1 2 3 4 5 6 7 8 CA17 0 1uF C0402 SMD CA17 0 1uF C0402 SMD RA4 47 R0603 SMD RA4 47 R0603 SMD RNA5 47x4 RN0402 SMD RNA5 47x4 RN0402 SMD 1 2 3 4 5 6 7 8 CA26 0 1uF C0402 SMD CA26 0 1uF C0...

Page 32: ...13 24 RDQ14 25 RDQ15 26 CA35 4 7uF 10V C0805 SMD CA35 4 7uF 10V C0805 SMD RNA12 75x4 RN0603 SMD RNA12 75x4 RN0603 SMD 1 2 3 4 5 6 7 8 RA7 75 R0603 SMD RA7 75 R0603 SMD RA8 75 R0603 SMD RA8 75 R0603 SMD RNA16 75x4 RN0603 SMD RNA16 75x4 RN0603 SMD 1 2 3 4 5 6 7 8 CA17 0 1uF C0402 SMD CA17 0 1uF C0402 SMD RA4 47 R0603 SMD RA4 47 R0603 SMD RNA5 47x4 RN0402 SMD RNA5 47x4 RN0402 SMD 1 2 3 4 5 6 7 8 CA26...

Page 33: ...ield 8 D0 9 CK 10 CK Shield 11 CK 12 CE Remote 13 NC 14 DDC CLK 15 DDC DATA 16 GND 17 5V 18 HP DET 19 SHELL3 22 SHELL4 23 SHELL5 24 SHELL6 25 SHELL7 26 SHELL8 27 SHELL9 28 R2118 1K R2118 1K C734 0 1uF C734 0 1uF R26 50 R0402 SMD R26 50 R0402 SMD R2133 47K R2133 47K R2138 1M R2138 1M D227 D227 1 2 D228 ESD_0402_0 15pF D228 ESD_0402_0 15pF 1 2 C736 0 1uF C736 0 1uF D233 D233 1 2 R2144 100K R2144 100...

Page 34: ...ield 8 D0 9 CK 10 CK Shield 11 CK 12 CE Remote 13 NC 14 DDC CLK 15 DDC DATA 16 GND 17 5V 18 HP DET 19 SHELL3 22 SHELL4 23 SHELL5 24 SHELL6 25 SHELL7 26 SHELL8 27 SHELL9 28 R2118 1K R2118 1K C734 0 1uF C734 0 1uF R26 50 R0402 SMD R26 50 R0402 SMD R2133 47K R2133 47K R2138 1M R2138 1M D227 D227 1 2 D228 ESD_0402_0 15pF D228 ESD_0402_0 15pF 1 2 C736 0 1uF C736 0 1uF D233 D233 1 2 R2144 100K R2144 100...

Page 35: ... Q29 2N3904 SOT23 SMD Q29 2N3904 SOT23 SMD 1 3 2 R2106 100 R2106 100 CB216 0 1uF C0402 SMD CB216 0 1uF C0402 SMD CB217 0 1uF C0402 SMD CB217 0 1uF C0402 SMD TP84 TP84 R126 47K R0603 SMD R126 47K R0603 SMD L153 NC FB R1206 SMD L153 NC FB R1206 SMD R2111 100 R2111 100 R2101 100 R2101 100 TP86 TP86 R399 NC R0603 SMD R399 NC R0603 SMD CB992 1uF C0402 SMD CB992 1uF C0402 SMD R404 4 7k R0603 SMD R404 4 ...

Page 36: ...D D192 NS ESD_0402_10pF C0402 SMD D192 NS ESD_0402_10pF C0402 SMD 1 2 R152 20K R0603 SMD R152 20K R0603 SMD Q71 NC 2N3904 SOT23 SMD Q71 NC 2N3904 SOT23 SMD 1 3 2 R1843 10K R0603 SMD R1843 10K R0603 SMD R1203 75 R0603 SMD R1203 75 R0603 SMD R1848 10K R0603 SMD R1848 10K R0603 SMD R1636 68 R0603 SMD R1636 68 R0603 SMD C635 4 7uF 6 3V C0805 SMD C635 4 7uF 6 3V C0805 SMD TP99 TP99 CB1005 0 1uF C0402 S...

Page 37: ...D 1 2 R160 0 R0603 SMD R160 0 R0603 SMD C135 10nF C0402 SMD C135 10nF C0402 SMD D33 NS ESD_0402_10pF C0402 SMD D33 NS ESD_0402_10pF C0402 SMD 1 2 D24 NS ESD_0402_10pF C0402 SMD D24 NS ESD_0402_10pF C0402 SMD 1 2 C136 10nF C0402 SMD C136 10nF C0402 SMD R187 100 R0603 SMD R187 100 R0603 SMD R175 75 R0603 SMD R175 75 R0603 SMD C140 10nF C0402 SMD C140 10nF C0402 SMD R101 1K R0603 SMD R101 1K R0603 SM...

Page 38: ...45 NS ESD_0402_10pF C0402 SMD 1 2 D199 NS ESD_0402_10pF C0402 SMD D199 NS ESD_0402_10pF C0402 SMD 1 2 R1215 0 R0603 SMD R1215 0 R0603 SMD w red P80 RCA2X1 RCA2 HAIER L w red P80 RCA2X1 RCA2 HAIER L 1 3 5 4 2 C459 47pF C0402 SMD C459 47pF C0402 SMD C561 47nF C0402 SMD C561 47nF C0402 SMD D224 NS ESD_0402_10pF C0402 SMD D224 NS ESD_0402_10pF C0402 SMD 1 2 red y w CNC2 RCA3X1 RCAJACK 1X3_SW red y w C...

Page 39: ... CE55 100uF 16V C100UF16V D6 3H7 C202 1uF C0402 SMD C202 1uF C0402 SMD FB50 FB BEAD SMD 0603 FB50 FB BEAD SMD 0603 C329 4 7uF 10V C0805 SMD C329 4 7uF 10V C0805 SMD CB170 0 1uF C0402 SMD CB170 0 1uF C0402 SMD C195 4 7uF 10V C0805 SMD C195 4 7uF 10V C0805 SMD R1612 10K R0603 SMD R1612 10K R0603 SMD FB53 FB BEAD SMD 0603 FB53 FB BEAD SMD 0603 C203 1uF C0402 SMD C203 1uF C0402 SMD CE198 10uF 16V C33U...

Page 40: ...D_0402_10pF C0402 SMD 1 2 Q73 2SD2653K SOT23 SMD Q73 2SD2653K SOT23 SMD 1 3 2 R55 470 R55 470 CE21 47uF 16V C10UF16V D4H7 CE21 47uF 16V C10UF16V D4H7 C650 10uF 6 3V C0805 SMD C650 10uF 6 3V C0805 SMD R1873 10K R0603 SMD R1873 10K R0603 SMD R1872 10K R0603 SMD R1872 10K R0603 SMD C649 10uF 6 3V C0805 SMD C649 10uF 6 3V C0805 SMD R1644 10k R0603 SMD R1644 10k R0603 SMD C648 10uF 6 3V C0805 SMD C648 ...

Page 41: ...C0402 SMD C676 1500P C0402 SMD C667 0 1uF C0402 SMD C667 0 1uF C0402 SMD R1788 100K_DNS R0603 SMD R1788 100K_DNS R0603 SMD Q64 MMBT3904 SOT23 Q64 MMBT3904 SOT23 1 2 3 R1780 10K R0603 SMD R1780 10K R0603 SMD D178 1N4148 1N4148 SMD D178 1N4148 1N4148 SMD CE631 10uF 35V C10UF16V D4H7 CE631 10uF 35V C10UF16V D4H7 R1784 NC R0603 SMD R1784 NC R0603 SMD 1 2 R17724 7K R0603 SMD R17724 7K R0603 SMD C670 0 ...

Page 42: ... RQQHFWLRQ LUH RU 5HPRWH RQWURO RDUG RDUG 6SHDNHU RQQHFWLRQ LUH A 6SHDNHU 5HPRWH RQWURO RDUG VVHPEO H SDG VVHPEO Workout Auditing Standard ization Approve brand customer export country special technique document number special number D L H U W S H customer type HL24XP1 LA24T3W DC18E0E0200 AT09SR0810US02 AMERICA QVC Haier DC18E0E0200 0 CNE2 RQQHFWLRQ LUH RU HSDGO RDUG RDUG 7 3 Wiring Connection Dia...

Page 43: ... will be into the factory mode menu when 3 steps above are done 8 1 2 How to exit If you want to exit this factory menu please press the button Exit on the remote 8 2 Measurements and Adjustments 8 2 1 Version S N Panel Resoution Version info The first item is the Model Name and the second one is current software version See picture on the next page Service Manual Model No HL24XP1 42 ...

Page 44: ...he VGA and Component model When we found the color in the two models was abnormal Then we can use the function to adjust it automatically Color Temperature The function could adjust the Color Temperature used when debugging 43 Service Manual Model No HL24XP1 ...

Page 45: ...AV S Video YPbPr VGA Compression Factor Compression state Downmix output model MTS System used when debugging The parameters only used when GHEXJJLQJ QR QHHG WR EH PRGL HG 8 2 4 Channel Range Scan The function could make it to search the channels by differentiation the analog and digital channels Service Manual Model No HL24XP1 44 ...

Page 46: ...LQ DGYDQFH Factory Scan According to ANTENNA ANALOG ANTENNA DIGITAL CABLE ANALOG CABLE DIGITAL to search channels used only in project debugging Tuner Diagnostic Project debugging setting used to inspect the audio function 45 Service Manual Model No HL24XP1 ...

Page 47: ...8 2 5 Gamma Gamma Bright GAMMA0 8 Middle default settings in the program Dark GAMMA1 2 8 2 6 Backlight Backlight adjust the backlight Service Manual Model No HL24XP1 46 ...

Page 48: ...s is for factory run in testing The screen would display red green blue and black screen repeatedly Each color screen could be exam at that time Clean Storage The function could make the model turn back to the factory default setting 47 Service Manual Model No HL24XP1 ...

Page 49: ...Remark The date of the chart only is an example please don t adjust the factory mode base on it Service Manual Model No HL24XP1 48 ...

Page 50: ...rify if correct channel is selected Adjust the antenna Make adjustments by Fine Tune and MANUAL Scan No color for some channel program black and white Verify if the same problem exists in other channels check out of picture and sound system Refer to relative instructions in the Manual for color adjust Spots with some or all pictures Verify if the antennal is correctly connected Verify if the anten...

Page 51: ...9 2 Power Supply Board Failure Check Service Manual Model No HL24XP1 50 ...

Page 52: ...ut Check the input output Re soldering or change IC U13 Check the input output Re soldering or change IC U55 Check the input output Re soldering or change IC U2 Check the Speaker Change the Speaker Check the Sperker wire Fail Pass Fail Fail Fail Fail Pass Pass Pass Pass 51 Service Manual Model No HL24XP1 ...

Page 53: ... Sunken TCP lead cracking ACF bonding short Awful environment and something electric enter into LCD Mis align between TCP and Panel Panel failure TCP failure V Dim Vertal gray line V L D Vertical color line light or dark forever H B D Horizontal bar H Dim Horizontal gary line H L D Horizontal line light or dark forever Service Manual Model No HL24XP1 52 ...

Page 54: ...er Bladder between Polarizer and top glass Polarizer Scratch Polarizer Scratch Tine or rigidity arose F inside Polarizer Eyewinker inside Polarizer Eyewinker inside Polarizer Circuit Abnormal Display Abnormal Display 1 Chip lose action 2 IC ahort or jointiog bad 3 Pannel and vsc connect bad Flashing Bright and dark display alternately 53 Service Manual Model No HL24XP1 ...

Page 55: ...ent and EDS Black Screen B L normal only Black screen display FIIcker Crosstalk LCD Vcom imbalance Abnormal Color Only color abormal Capacitance improper bring crosstalk inside LCD pannel Abnormal Color Only color abnormal 1 Chip lose action 2 IC short or jointion bad 3 Pannel and vsc connect bad Service Manual Model No HL24XP1 54 ...

Page 56: ...wire and electrode B L dark B L brightness darker than normal Connect badnessShort between wire and electrode B L wire damaged B L wire damaged Operation abnormal or systemic noise B L wire open Without backlight Operation abnormal or systemic noise B L shut down B L shutdown in sometime Short bitween lamp housing and wire Because consume power too much F M F M inB L white balck Rotundity or wirel...

Page 57: ...lcal or B L Light leakage Brightness at bottom of LCM brighter than normal B L unit badness Uniformity B L brightness asymmetric Sheet in B L unit is uneven Mount hole Lack screw or screw damage Lack screw Screw damage Service Manual Model No HL24XP1 56 ...

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