Table of Contents
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21.5"&23.6" LCD TV
Service
Service
Service
Description
Table of Contents........................................................1
Important Safety Notice...............................................2
Revision List........................................................3
1. General Specification..................................................4
2. Operating Instructions.........................................5
2.1 Remote Control..................................................5
2.2 OSD Menus.......................................................6
2.3 Panel Control And Rear Terminal Control............17
3. Input/Output Specification.....................................20
4. Mechanical Instructions........................................22
5. Repair Flow Chart .............................................27
6. PCB Layout .....................................................34
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
Table of Contents
Page Description
6.1 Main Board..................................................34
6.2 Power Board..................................................37
6.3 IR Board..................................................39
7. Adjustment..............................................................41
7.1 ADC/WB Adjustment..............................................41
7.2 Firmware and DDC Instruction..............................42
8. Block Diagram........................................................43
9. Wiring Diagram.......................................................45
10. Schematic Diagram.........................................47
10.1 Main Board...................................................47
10.2 Power Board.................................................56
10.3 IR Board..................................................58
SAFETY NOTICE
1
Haier LE22T900&LE24T900
Page
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Related Manuals for Haier LE22T900
Summary of Contents for Haier LE22T900
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Page 1: Table Of Contents
21.5″&23.6″ LCD TV Haier LE22T900&LE24T900 Service Service Service Table of Contents Description Page Description Page Table of Contents..……........…..1 6.1 Main Board……..…………………...…….…..34 Important Safety Notice........……..2 6.2 Power Board……..…………………...…….…..37 Revision List………………………………………………..3 6.3 IR Board………….……………..……….…..39 1. General Specification........………..4 7. Adjustment..............41 2. Operating Instructions..………………….……...……..5 7.1 ADC/WB Adjustment..........41... -
Page 2: Important Safety Notice
Important Safety Notice Proper service and repair is important to the safe, reliable operation of all Haier Company Equipment. The service procedures recommended by Haier and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. -
Page 3: Revision List
Revision List Version Release Date Revision Instructions Customer Model Model LE22T900 E2AC1KNCCHH6NN Dec.25,2012 Initial release LE24T900 E2CC2KNCDNH6NN... -
Page 4: General Specification
1. General Specification... -
Page 5: Operating Instructions
2. Operating Instructions 2.1 Remote Control... -
Page 6: Osd Menus
2.2 OSD Menus... -
Page 17: Panel Control And Rear Terminal Control
2.3 Panel Control and Rear Terminal Control... -
Page 20: Input/Output Specification
3. Input/Output Specification 3.1 Input Signal Connector D-SUB Pin No. Description Pin No. Description Red Video No Pin Green Video Sync Ground Blue Video Serial Data for DDC Ground H. Sync Red Ground V. Sync Green Ground Serial Clock for DDC Blue Ground HDMI Pin No. - Page 21 3.2 Input Signal Timing Analog RGB Number Resolution Refresh Frequency(Hz) 640*480 59.9 720*400 69.6 800*600 1024*768 1360*768 1920*1080 HDMI Name of Signal Refresh Frequency (Hz) 640x480p 59.94/60 720x480p 59.94/60 720x480p 59.94/60 1280x720p 59.94/60 1920x1080i 59.94/60 720(1440)x480i 59.94/60 720(1440)x480i 59.94/60 1920x1080p 59.94/60 720x576p 720x576p...
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Page 22: Mechanical Instructions
4. Mechanical Instructions LE22T900 Step1. Remove the STAND ASS’Y. Step2. Remove the REAR COVER. - Page 23 Step3. Remove the MAIN BOARD, POWER BOARD, IR BOARD and SPEAKERS. Step4. Remove the BRACKET and separate PANEL and BEZEL. Step5. Remove the IR BOARD.
- Page 24 LE24T900 Step1. Remove the STAND ASS’Y. Step2. Remove the REAR COVER.
- Page 25 Step3. Tear up all the WHITE TAPE_INSULATING remarked in yellow. Step4. Disconnect all the detachabled CABLE/CON.
- Page 26 Step5. Remove the MAIN, POWER BOARD IR BOARD and SPEAKERS. Step6. Separate the PANEL and BEZEL.
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Page 27: Repair Flow Chart
5. Repair Flow Chart 1. No power No power (LED “Off”) Check the AC input and Power “On” the power is “ON”? Power board output=5V? Replace the power board Check the IR board and LED Replace the IR board Replace the main board... - Page 28 2. Can’t start Can’t start（LED Blue） Replace the power board Power board output＝16V? Replace the key board Check the power key is under control? Replace the IR board Check the IR receiver is normal? Replace the main board Replace the Power board...
- Page 29 3. Abnormal Display Abnormal Display Reset the source Check the source Enter factory mode to do “EEPROM initial”&“Reset” Replace the main board Check the main board Check the LVDS cable Replace the LVDS cable Check the panel Replace the panel...
- Page 30 4. No display No display (LED Red) Check TV is under control and power Replace the main board on/off by remote control and power key? Check the backlight is “On”? Check the LVDS cable Check the B/L signal is available? Reinsert or replace the LVDS cable Replace main board...
- Page 31 5. Sound problem No sound or sound abnormal Check the audio source connection and the TV system are correct? Reinsert the audio cable or change the TV system Check the TV is muted, adjust the volume or enter the menu to reset? Enter factory mode to do “Reset”...
- Page 32 6. Remote control malfunction Remote Control malfunction Check the remote control battery is Replace the battery not properly placed or no power? Use the other remote controls Replace the remote control Whether the IR board is Replace the IR board abnormal? Replace the main board...
- Page 33 7. OSD is unstable or can’t work normally OSD is unstable or can’t work normally Key board connected properly? Reconnect the key board Replace the button function Buttons are OK? Replace the key board Key board is OK? Enter factory mode to do “Reset” Replace the main board...
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Page 34: Pcb Layout
6. PCB Layout 6.1 Main Board 715G5549M0E000004K... -
Page 37: Power Board
6.2 Power Board 715G5309P01002002S... -
Page 39: Ir Board
6.3 IR Board LE22T900 715G5471R02000004S... - Page 40 LE24T900 715G4938R01000004S...
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Page 41: Adjustment
7. Adjustment 7.1 ADC/WB Adjustment It only needs to adjust WB (Ypbpr/VGA’s Normal/Warm/Cool) . Step1. Enter into the factory mode (same as the above-mentioned). Press RC key ‘menu’+’1’+’9’+’9’+’9’ or ‘menu’+’1’+’9’+’9’+’9’+’ok’. Step2.Take “Ypbpr_Normal” adjust for example: 1. Select “Current Source”: Ypbpr; “Color Temp”: Normal. 2. -
Page 42: Firmware And Ddc Instruction
7.2 Firmware and DDC Instruction Step 1: Ready for F/W Upgrade 1.1 Prepare a USB disk (The file system of USB disk must be FAT16 or FAT 32). 1.2 Copy the file of F/W from your computer to the USB disk root directory, and remove it from computer’s USB port! Step 2: F/W Upgrade 2.1 AC on (Power plug) -
Page 43: Block Diagram
8. Block Diagram W25Q32BVSSIG U403 NOR FLASH 32Mb DT21CN-2-E IF1P LCD PANEL T-CON TU101 IF1N LVDS (50/60 Hz) D-SUB(PC IN) CVBS output RTD2648 CVBS PC AUDIO PHONE JACK(PC R/L) monitor output YPbPr YPBPR AUDIO AMP SPK X 2 AOUT_L SPK R/L AOUT_R AD52583 CVBS... - Page 44 DDR Power Pac' :2.5V Mac :1.8V (1 A) 1.8V DDR_POWER G1084T43Uf A1V0 D5V_STB (3 A) D_5V DC-DC AO4449 AT1529F11U D1V0(Core Power) SCALER POWER_ON_LV2 Pac' :1A (300 mA) Mac :2A TUNER G903T63UF DT21CN-2-E RTD2648 USB DRIVER (1 A) +3V3 G1084T43Uf M3V3 FLASH AO3401 POWER_ON_LV2...
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Page 45: Wiring Diagram
9. Wiring Diagram Panel LE22T900 13 Pin CN810 CN701 30 Pin CN4001 CN9101 Power Board RTD2648 U4001 Scaler IC CN4004 CN601 CN9901 Panel IR Board CN201 Speaker L Speaker R... - Page 46 LE24T900 Panel 13 Pin CN810 CN701 30 Pin CN4001 CN9101 Power Board RTD2648 U4001 Scaler IC CN4004 CN601 CN9901 Panel IR Board CN0201 Speaker L Speaker R...
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Page 47: Schematic Diagram
10. Schematic Diagram 10.1 Main Board 715G5549M0E000004K BL_ADJ BL_ADJ POWER_ON_LV2: High Active BL_EN BL_EN Standby BL_PWM BL_PWM +3V3 POWER_ON_LV1 D5V_STB POWER_ON_LV1 POWER_ON_LV2 POWER_ON_LV2 CN701 R702 R731 NC/10K 1/10W BL_ON1 BL_PWM +12V R703 Realtek request on 3/21'12 BL_ON1 Q703 0R05 OHM C705 NC/MMBT3904 BL_EN... - Page 48 To LVDS To Video input Pin119 CLOAD: +3V3 VDAC_3V3 A1V0 VDADC_1V0 FB4002 FB4003 TEDP VGA_DDC_SCL BOM For Mac : CS5 10uF TEDP VGA_DDC_SCL TEDN VGA_DDC_SDA BOM For Pac': CS5 TEDN VGA_DDC_SDA VGA_HS 100nH 300R VGA_HS U4002 +3V3 VGA_VS RESET Cir. C4082 C4002 C4003...
- Page 49 FB4026 300R 4A From Main Chip +12V TEDP AO4449 -7A/-30V PANEL_VCC TEDP TEDN Add R4054 for panel enable default Q4006 TEDN D5V_STB status on 2/17'12 FB4027 NC/300 OHM C4072 TECP TECP TECN C4071 TECN M3V3 M3V3 R4023 220N 16V 100N 16V R4068 TEBP TEBP...
- Page 50 AV share with YPbPr To Chip CN101 CN102 R102 R103 Y 0+ R104 Y PBPR1_IN_L PB0+ 0R05 OHM 100OHM1/16W PB0+ R101 C101 6.8kOHM +-5% 1/10W Y PbPr0- Y PbPr0- Y 0+ 75 OHM Y 0+ Y PBPR1_IN_R PR0+ SH101 5PF 50V R105 PR0+ R106...
- Page 51 From Main Chip VGA_CON5V D_5V Mark on board VGA_B+ VGA_B+ AGND VGA_B- D-sub VGA_B- D401 VGA_G+ VGA_G+ VGA_BIN VGA_B+ VGA_R+ BAT54C R128 R129 VGA_R+ VGA_5V 0R05 OHM 100OHM1/16W AGND R131 R132 ZD125 R130 C110 VGA_HS 10K+-5%1/16W 10K+-5%1/16W CONN MLVG0402 75 OHM VGA_HS CN105 5PF 50V...
- Page 52 To Main Chip D_5V M3V3 FB502 DV33_TMDS HDMI_D2+ DV33_TMDS HDMI_D2+ HDMI_D2- DV33_TMDS R516 HDMI_D2- HDMI_D1+ R527 120R HDMI_D1+ HDMI_D1- R526 100K 1/16W HDMI_D1- HDMI_D0+ C505 C513 C511 C510 C512 NC/22KOHM 1/10W R536 HDMI_D0+ HDMI_D0- C506 HDMI_D0- HDMI_CLK+ 10UF 10V 100N 16V 100N 16V 100N 16V HDMI_CLK+...
- Page 53 R602 AV_L_OUT# AOUT_L 100 OHM AV_R_OUT# R603 1.2A Max AOUT_R AOUT_L 100 OHM U601 AOUT_L AOUT_R R605 NC/100K 1/10W D_5V AOUT_R C604 R604 AMP_MUTE NC/100K 1/10W C605 AMP_MUTE Thermal Pad R606 1NF 50V 1NF 50V PVDD 10K 1/10W AMP_STB R601 PVCCL Q601 MMBT3904...
- Page 54 Main Chip <--> Silicon Tuner 3.3V_TUNER TUN_IF+ TUN_IF+ TUN_IF- 300mA TUN_IF- TUNER D_5V 3.3V_TUNER TU101 FB103 ATV_IF_AGC FB101 U101 ATV_IF_AGC NC/300 OHM 300mA VOUT Tuner3.3V TUN_I2C_SCL TUN_I2C_SCL ANT-DC C127 TUN_I2C_SDA TUN_I2C_SDA Tuner3.3V 3.3V_TUNER C126 C149 SCL_CAN C128 100UF16V 1UF 10V C129 100N 16V NC/10UF 10V...
- Page 55 To Keypad D5V_STB +3V3 IRRX IRRX +3V3 +3V3 LEDR LEDR DGND LEDG LEDG LSADC1 FB4028 LSADC1 NC/300R 4A FB4029 LSADC0 LSADC0 300R 4A R4032 R4033 +3V3 CN4004 2K2 1/10W 1% 4K7 1/10W 1% VGA_RX0 VGA_RX0 LED-R VGA_TX0 R4034 VGA_TX0 LED-G 100 OHM IRRX1 POWER_KEY...
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Page 56: Power Board
10.2 Power Board 715G5309P01002002S FB9908 BD9101 FB9906 BEAD GBL408-C BEAD CN9101 D9101 ON/OFF T9101 MBRF1560CT L9101 C9102A C9101 POWER X'FMR 3.5uH +5.2V C9120 47UF 450V C9102 C9101A 13*40 13*45 C9125 FB9902 47UF 450V 2.2nF 630V 13*45 BEAD 13*40 FB9907 C9111 +12_16V 470UF 25V BEAD... - Page 57 FB9905 FB9904 L8102 BEAD D8101 VLED+ 47UH SR510-22 JUMPER +12_16V C8101 C8102 C8113 470UF 25V C8105 C8106 47UF 100V 47UF 100V 100N 50V 10*12 10*12 10*12 R8116 Q8101 AO4482L C8115 100PF R8115 51K 1/4W C8107 1NF 500V R8104 R8117 C8111 33 OHM 3.6K 1% 1/8W IC8501...
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Page 58: Ir Board
10.3 IR Board LE22T900 715G5471R02000004S 081G 14 24 EL LED201 033G8032 5F HR LED_R R202 220 OHM 1/10W Top View LED_B R203 220 OHM 1/10W CN201 U201 16 mm R201 15K 1/10W Dip LED IRM-H638M3/TR2 C201 CONN 0.1uF 50V 37mm... - Page 59 LE24T900 715G4938R01000004S VCC_STBY EMI_GND R0201 R0202 330OHM 1/10W 330OHM 1/10W LED0201 BLUE VCC_STBY Q0201 Q0202 PDTC114EU PDTC114EU VCC_STBY LED1_ON FB0201 600R/200mA FB0202 600R/200mA R0204 CN0201 R0203 47R 1/16W 5% FB0203 IRM-3638TF16 600R/200mA 2K7 1/16W 5% LED2_STBY FB0204 600R/200mA ZD0202 C0205 BZX84-C5V1 U0201 4.7uF 10V...