Haier DX-LDVD22-10A Service Manual Download Page 43

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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 in

B/L ,white,balck

Rotundity or

wirelike

F/M in B/L unit

Failure Mode

Part Name

Description Phenomena

Failure

cause

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

Mechanlcal
or B/L

Mount hole

Lack screw or
screw damage

*Lack screw
Screw damage

Summary of Contents for DX-LDVD22-10A

Page 1: ...empting to service a product Products powered b electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product deal with in this service information by anyone else could result in serious injury or death COLOR TV Model No DX LDVD22 10A CHASSIS ZORAN775 2009 Qingdao Electronics limited company All rights reserved Unauthorized cop...

Page 2: ... 4 Disassemble and assemble 17 4 1 Tearing down the base 17 4 2 Tearing down the plastic front cabinet 17 4 3 Tearing down the panel 17 4 4 Tearing down the panel joint pieces 18 4 5 Tearing down the main board 19 4 6 Tearing down the power supply 19 4 7 Tearing down the DVD 20 4 8 Tearing down the speaker 20 4 9 Tearing down the DVD keypad assembly 21 4 10 Tearing down the rotated axis 21 4 11 Te...

Page 3: ...S 27 6 1 Front Panel Controls 27 6 2 Back Panel Controls 28 6 3 Setting up Your Remote Control 29 7 MEASUREMENTS AND ADJUSTMENTS 30 8 Electrical parts 35 8 1 Wiring Connection Diagram 35 8 2 Block Diagram 36 8 3 Circuit Diagram 36 9 Trouble Shooting Guide 54 ...

Page 4: ...t operating and maintenance instructions in the literture accompanying the appliance 1 2 2 Be careful to the electrical shock To prevent damage which might result in electric shock or fire do not expose this TV set to rain or excessive moisture This TV must not be exposed to dripping or splashing water and objects Filled with liquid such as vases must not be place on top of or above the TV 1 2 3 E...

Page 5: ... insulation resistance is less than M ohm the inspection repair should be required If you have not the 500V insulation resistance meter use a Tester External exposure metal Antenna terminal Headphone jack 1 2 8 Ordering Spare Parts Please include the following informations when you order parts Particularly the Version letter 1 Model number and Version letter The model number can be found on the ba...

Page 6: ... or has to 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 he she will find additional information on a specific topic ...

Page 7: ...cable Yes Tuner Module Provider part NXP Zoom Display Formats Min Yes 3 Comb Filter 3d y c digital 3 2 Pulldown Yes USB Port for thumb drive side Supports F W Upgrade MP3 JPEG Yes For firmware update back side with cover Closed Captioning Display Yes V Chip Version 2 0 Yes Sleep Timer Yes Channel Labeling Yes Auto Zoom Yes Composite Inputs back Yes 1 SIDE BACK S Video Inputs back Yes 1 SIDE BACK C...

Page 8: ...l Disk Playback Support DVD Video R RW R RW CD R RW JPEG Photo DVD video interface to TV Component Progressive PC Input Max Resolution match panel 1360 768 OSD Style Simple standardized OSD Languages Eng Fre Spa Mand Eng Fre Spa Multi Lingual Manuals combined or divided Combined ...

Page 9: ...ION OF CONTROLS AND COMPONENTS 3 1 Board Location No Description A Board Main Board B Board Power supply Board C DVD D Speaker 3 2 A Board Main Board 3 2 1 Function Description Main Board A Board D B Board C DVD ...

Page 10: ...10 Process signal which incept from exterior equipment then translate into signal that panel can display 3 2 2 Connector definition Main board connector LVDS Connector CN8 PIN 1 ...

Page 11: ...VDS_D2E_N LVDS 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 pa...

Page 12: ...or CN1 Pin number Signal name Description 1 LSPK Left Audio Output 2 GND Ground 3 GND Ground 4 RSPK Right Audio Output Remote Board and Key board Connector CN2 Pin number Signal name Description 1 IR_IN IR 2 CPU5V 5V Power 3 LED_B Blue Indicator light 4 GND Ground 5 LED_R Red Indicator light 6 K6 Key Connector POWER 7 K5 Key Connector MENU 8 K4 Key Connector P 9 K3 Key Connector P 10 K2 Key Connec...

Page 13: ...Ground 4 GND Ground 5 12V 12V Power DVD Video Connector CN6 Pin number Signal name Description 1 DVD_SW DVD 自动跳转 2 DVD_PB Pb Signal 3 DVD_Y Y Signal 4 GND Ground 5 DVD_PR Pr Signal 6 GND Ground 7 DVD_IR IR control DVD Audio Connector P1 Pin number Signal name Description 1 DVD_L_IN Left track 2 DVD_R_IN Right track 3 GND Ground PIN 1 PIN 1 PIN 1 ...

Page 14: ...al name Description 1 NC 2 GND Ground 3 GND Ground 4 BL ADJUST INVERTER Lightness Adjust 5 BL ON OFF INVERTER Switch Control 6 12V 12V Power 7 12V 12V Power Other Connector AC150V AC240V Input CN15 Power supply for panel CN11 Power supply for panel CN12 Power supply for panel CN13 Power supply for panel CN14 3 4 LCD PANEL ...

Page 15: ...15 Connector definition ...

Page 16: ...16 ...

Page 17: ...17 4 Disassemble and assemble 4 1 Tearing down the base 4 2 Tearing down the plastic front cabinet 4 3 1 Tearing down the panel ...

Page 18: ...18 4 3 2 Tearing down the panel 4 4 Tearing down the panel joint pieces ...

Page 19: ...19 4 5 Tearing down the main board 4 6 Tearing down the power supply ...

Page 20: ...20 4 7 Tearing down the DVD 4 8 Tearing down the speaker ...

Page 21: ...21 4 9 Tearing down the DVD keypad assembly 4 10 Tearing down the rotated axis ...

Page 22: ...22 4 11 Tearing down the terminal board 4 12 Tearing down the keypad and remote control board ...

Page 23: ...23 ...

Page 24: ...24 5 INSTALLATION INSTRUCTIONS Accessories Remote Control User Manual Battery ...

Page 25: ...25 ...

Page 26: ...26 ...

Page 27: ...27 6 OPERATION INSTRUCTIONS Basal information 6 1 Front panel controls ...

Page 28: ...28 6 2 Back panel controls ...

Page 29: ...29 6 3 Setting up Your Remote Control ...

Page 30: ...y mode menu First press menu Second choose the AUDIO Third input 8893 Finished these operations system will be into the factory mode menu Press to select articles and then press the Right or enter button to sub menu Software Upgrade White Balance Color Temp ...

Page 31: ...31 Picture Mode Setting Audio Mode Setting ...

Page 32: ...32 SSPLL Setting IF you want to exit this factory menu please press the button Exit in the remoter 7 1 Picture ...

Page 33: ...33 7 2 Audio ...

Page 34: ...34 7 3 CHANNELS 7 4 SETTINGS ...

Page 35: ... 4 DVD Main board 5 L C D P a n e l 6 P o w e r S u p p l y B o a r d 7 8 FFC Wire Speaker Connection Wire 9 Speaker 10 11 Connection Wire For Contr o l Board 12 Remote Control Board Assembly 13 Keypad Assembly Power Cord 14 D V D K e y p a d A u t o i n s e r t e d B o a r d A s s e m b l y Workout Auditing Standard ization Approve brand customer export country special technique document number s...

Page 36: ...r Supply Board 0090203636 0090101794 Rotational Axis Base neck 1 0090203769 3 Terminal Board 0090101764 1 1 3 4 5 8 9 10 11 12 2 13 14 15 16 17 18 19 21 22 23 24 25 20 19 22 23 25 20 21 1 1 0090719341 0090203769 4 1 2 1 0090203637 Base pannel Speaker Bracket Remote Control Board Assembly 24 Rubber 4 0090301459 Keypad Assembly Control Borad Bracket 0090203762 3 0090203762 4 Ornament 0090718846 1 Ex...

Page 37: ...fy 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 adjusts Spots with some or all pictures Verify if the antennal is correctly connected Verify if the antenn...

Page 38: ...ailure check State No power First check cables which connect with PSU then check as follows 1 Check PSB input voltage AC input voltage 120V Connector CN13 2 Check PSB output voltage orderly Voltage 12V 12V Connector CN10 ...

Page 39: ...39 State No picture ...

Page 40: ...40 9 4 Panel failure Failure Mode ...

Page 41: ...LCD Mis align between TCP and Panel Panel failure TCP failure Failure Mode Part Name Description Phenomena Failure cause Dot Defect Bright dot dark dot in panel Incoming Inspection Standard Polarizer Bubble Bladder in Polarizer Bladder between Polarizer and top glass Polarizer Scratch Polarizer Scratch Tine or rigidity arose Panel or Polarizer F M inside Polarizer Eye winker inside Polarizer Eye w...

Page 42: ...lor Only color abnormal 1 Chip lose action 2 IC short or jointion bad 3 Pannel and vsc connect bad Failure Mode Part Name Description Phenomena Failure cause Mechanlcal Nolse When turn panel appear cacophony Caused by Mechanica noise of backlight unit Ripple Connectric circle Causeed by between mechanism and pannel B L off B L lose action Connect badness between wire and electrode B L dark B L bri...

Page 43: ... power too much F M F M in B L white balck Rotundity or wirelike F M in B L unit Failure Mode Part Name Description Phenomena Failure cause 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 Mechanlcal or B L Mount hole Lack screw or screw damage Lack screw Screw damage ...

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