Haier L32C1120 Service Manual
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Haier L32C1120 Service Manual

Haier L32C1120 Service Manual

32" lcd tv
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Download this manual See also: Owner's Manual, User Manual
32" LCD TV
Service
Service
Service
Description
Table of Contents............................................................1
Important Safety Notice...................................................2
Revision List.........................................................3
1. General Specification..................................................4
2. Operating Instructions............................................6
2.1 The Use of Remote Control...................................6
2.2 To Use the Menus...............................................7
2.3 Front Panel Control Knobs..................................15
2.4 How to Connect................................................16
3. Input/Output Specification.......................................17
4. Mechanical Instructions.........................................19
5. Repair Flow Chart .............................................22
6. PCB Layout ......................................................29
6.1 Main Board.......................................................29
6.2 Power Board.....................................................31
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
6.3 Led Board.....................................................34
6.4 Key Board.....................................................34
6.5 IR Board.......................................................35
7. Adjustment.....................................................36
7.1 ADC Adjustment............................................36
7.2 FW Upgrade.................................................37
7.3 The Writing VGA & HDMI EDID.........................41
8. Block Diagram........................................................46
9. Wiring Diagram......................................................47
10. Schematic Diagram........................................48
10.1 Main Board..................................................48
10.2 Power Board.................................................60
10.3 Led Board..................................................62
10.4 Key Board...................................................63
10.5 IR Board.....................................................64
SAFETY NOTICE
1
Haier L32C1120
Horizontal Frequency
31~75 KHz
Page

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Summary of Contents for Haier L32C1120

  • Page 1: Table Of Contents

    32″ LCD TV Haier L32C1120 Service Service Service Horizontal Frequency 31~75 KHz TABLE OF CONTENTS Description Page Description Page 6.3 Led Board………………………..……..………..34 Table of Contents..……........…..1 6.4 Key Board………………………..……..………..34 Important Safety Notice........……..2 6.5 IR Board…………………………..……….……..35 Revision List…………………………………………………3 7. Adjustment……………….……….…………...………36 1. General Specification.........………..4 7.1 ADC Adjustment……………………..……...………36...

  • 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 Model Jan.24,2011 Initial release E32AGZNKWUH3NNX...

  • Page 4: General Specification

    • This model complies with the specifications listed below. • Designs and specifications are subject to change without notice. • This model may not be compatible with features and/or specifications that may be added in the future. Model No. L32C1120 DISPLAY Viewable 31.5"...
  • Page 5 Model No. L32C1120 WALL MOUNTING VESA-compatible wall bracket 200 x 200 mm (W x H) Screw type Metric 6 x 10 mm POWER Power Consumption 150W Standby <1W Mains Power 120V~60Hz Audio Power 10W + 10W Ambient Temperature 41°F~95°F PACKAGE CONTENTS...

  • Page 6: Operating Instructions

    2. Operating Instructions 2.1 The Use of Remote Control POWER RECALL Press to power ON/OFF (standby) TV. Press to display the previous channel. Note: TV is never completely power off unless physically unplugged. DISPLAY Press to show the information about the PICTURE input source, TV channel, display Press to switch the picture mode.

  • Page 7: To Use The Menus

    2.2 To Use the Menus...

  • Page 15: Front Panel Control Knobs

    2.3 Front Panel Control Knobs INPUT Press to select the input source. MENU Press to open or exit the OSD (on-screen display) menu. VOL + Press to increase the sound volume. VOL - Press to decrease the sound volume. CH + Press to increase the channel number.

  • Page 16: How To Connect

    2.4 How to Connect 1. HDMI - Connect the primary source for digital video such as a DVD multimedia player or set top box through this all digital connector. 2. PC IN - Connect the video and audio cables from a computer here. 3.

  • Page 17: 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 SDA(Remote Control) SCL(Remote Control) Serial Data for DDC Ground H-Sync Red Ground V-Sync Green Ground Serial Clock for DDC Blue Ground HDMI Pin No.
  • Page 18 3.2 Input Signal Timing Analog RGB VESA MODES Horizontal Vertical Nominal Nominal Nominal Sync Sync Pixel Mode Resolution Total Frequency Freq. Polarity Polarity Clock (KHz) (Hz) (MHz) 640x480@60Hz 800 x 525 31.469 59.94 25.175 640x480@72Hz 832 x 520 37.861 72.809 31.5 640x480@75Hz 840 x 500...

  • Page 19: Mechanical Instructions

    4. Mechanical Instructions Step1. Remove the STAND HINGE and BASE. Step2. Remove the REAR COVER.
  • Page 20 Step3. Remove the POWER CORD. Step4. Remove the MAIN BOARD, POWER BOARD and SPEAKERS.
  • Page 21 Step5. Remove the BKT and separate the BEZEL and PANEL. Step6. Remove the IR BOARD, KEY BOARD and LED BOARD.

  • Page 22: 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 23 2. Can’t start Can’t start（LED red） Replace the power board Power board output＝24V? 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 24 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 25 4. No display No display (LED white) 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 26 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 27 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 28 7. OSD is unstable or can’t work normally OSD is unstable or can’t work normally Reconnect the key board Key board connected properly? 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...

  • Page 29: Pcb Layout

    6. PCB Layout 6.1 Main Board 715G3269M01001005K...

  • Page 31: Power Board

    6.2 Power Board 715G3770P02W20003S...

  • Page 34: Led Board

    6.3 LED Board 715G4252T02000004S 6.4 Key Board 715G4234K02000004S...

  • Page 35: Ir Board

    6.5 IR Board 715G4247R02000004S...

  • Page 36: Adjustment

    7. Adjustment 7.1 ADC Adiustment It’s no need to adjust the white balance for this model, do ADC only. Step1: Turn on the TV, press “Menu”, then press number key 1 9 and “ENTER”, it will achieve the factory mode. Take the following picture for example: Step2: Change TV, press the “Current Source”...

  • Page 37: Fw Upgrade

    FW version. The first and second parts of FW name must be the same as the TV, and the third part must not be the same as TV current FW version. Or the FW upgrade can’t continue. Take Haier L19C1120 for example: Brand: Haier Customer model name FW version: V2.01 Step 2: F/W Upgrad 2.1 AC on (Power plug Figure 2.1/2.2)
  • Page 38 2.4 When TV detects the USB memory, there is a prompt frame appearing on the screen as figure 2.6, press “ENTER” key(on the Navigation Keys on the Remote control, as follows Figure 2.7 to select “Yes” option to download F/W(Figure 2.8). Take Haier L19C1120 for example: Figure 2.6...
  • Page 39 2.5 TV will upgrade automatically. Note: When Upgrade on the process, please don’t Power-Off! (Figure 2.8) Figure 2.8 2.6 When upgrade 100% and prompt for Upgrade Success info, remove the USB Drive and press “ENTER” key to reset TV (Figure 2.9) Figure 2.9 Step 3: Check the F/W version and reset to default.
  • Page 40 3.2 Check the F/W version on the second row of the factory mode info. If F/W version is incorrect, please upgrade again as above steps, else let’s go to Step 3.3. Take Haier HLC24XLE2 for example: Figure 3.2 3.3 If the FW version is correct, please do factory reset.

  • Page 41: The Writing Vga & Hdmi Edid

    7.3 The Writing VGA & HDMI EDID Step1. Ready for writing EDID Tool: 715G2005-C2 Cable: a LPT cable, a VGA cable, a DVI to HDMI cable and a 12V DC adapter. 715G2005-C2 male to male LPT cable VGA cable DVI to HDMI cable Step2.
  • Page 42 Step3. Install TPV edid tool. Take Haier LY19Z6 for example: 1. Double click this icon to install. 2. Double click this icon to run. This red frame contents detail information in VGA EDID file. 1. Click here to open this interface.
  • Page 43 Step4. Click “FPD” to open another interface as follows. Take Haier LY19Z6 for example: 1. Tick LPT1 2. Click here to read file as figure 4.2 2. Click “open” to read the “.dat” file. figure 4.2...
  • Page 44 Step5. Click “write EDID” to write EDID. If display “NG” in the yellow blank, which represent writing failly. Please check the whether the connection of tool and cables is nomal and retry. Another way is to change a new ISP board and retry. Take Haier LY19Z6 for example: 2. ”OK” represents writing successfully.
  • Page 45 Step6. Write HDMI EDID. Connection for writing HDMI EDID. Connect to TV HDMI port. Connect to PC LPT port. 12V DC input Notice: When writing HDMI EDID, the TV must be AC on, or the process can’t continue, and will prompt “NG”...

  • Page 46: Block Diagram

    8. Block Diagram P24V P24V Inverter & Audio Amplifier P12V Tuner P12V U708 G9084T43U U709 AZ1117D-5.0-E1 ENV56S02D8F P12V CVBS LVDS LCD PANEL U710 SC4525BSETRT PANEL_5V VIDEO1 CVBS +5VSB 3V3_STB 1V8_STB POWER +5VSB U706 SC194BM LTRT U702 AIC1084-18PE BOARD VIDEO2 CVBS DDRII VCC5D D3V3...

  • Page 47: Wiring Diagram

    9. Wiring Diagram Panel Panel 095G8018-3DX01 LVDS Cable 24 Pin 2 Pin CN802 CN405 ZR39775HGCF (U401) 2 Pin Scaler IC CN801 Power Board CN606 CN902 095G801313X906 HARNESS CN701 Board AC IN CN403 10 Pin CN901 CN001 IR Board Speaker Speaker CN01 CN301 4 Pin...

  • Page 48: Schematic Diagram

    10. Schematic Diagram 10.1 Main Board 715G3269M01001005K 3) Tuner C265 C266 0.0022uF 0.0022uF FB201 600 OHM FB202 NC/600 OHM C267 U401P FB203 600 OHM 1uF/25V C201 C202 C203 Demodulator TU201 TUNER D3V3 SIF_IN SIF_N 0.1uF/16V 0.1uF/16V C204 NC/0.1uF/16V R202 NC/47R 1/10W 5% SIF_AINN SIF_P NC/0.0022uF...
  • Page 49 4) AV/YPbPr Inputs D3V3 Active L R276 10K 1/10W 5% R277 100R 1/10W 5% AV1_S_DET 5 S1_Y FB204 30 OHM U401F S1_C FB205 30 OHM AV1 Input Place parts very close to U401 U201 Video In I/F VCC5D AZC099-04S R216 R217 S1_Y (Rear)
  • Page 50 5) HDMI Inputs Run As 100 Ohm Differential Pairs Run As 100 Ohm Differential Pairs CN501 HDMI VCC5D U401O U501 3V3_STB HDMI2_D0P HDMI2_CLKN HDMI2_CLKN HDMI1 I/F TMDSD0+ Line-1 HDMI2_D0N HDMI2_CLKP L501 NC/90 ohm TMDSD0- Line-2 HDMI2_CLKP HDMI3_D2P HDMI1_D2P HDMI2_D1P HDMI2_D0N HDMI2_D0N HDMI3_D2N TMDSD1+...

  • Page 51: Vga Input

    6) VGA/HDMI Inputs D3V3 3V3_STB VGA Input R251 10K 1/10W 5% VGA5V R252 10K 1/10W 5% R287 NC/10K 1/10W 5% UART0_TX R253 220R 1/10W 5% UART0_TX CN206 UART0_RX R254 220R 1/10W 5% DB15 C252 UART0_RX 0.1uF/16V ZD203 VGA_R FB221 30 OHM VGA_R VGA_SDA R256...
  • Page 52 7) SIO I/F D3V3 D3V3 EJTAG I/F R404 R405 R406 R407 R408 U401C R409 R401 NC/4K7 1/10W 5% SIO I/F 4K7 1/10W 5% 4K7 1/10W 5% 4K7 1/10W 5% 1K 1/10W 5% CN401 System MCU RESET 1K 1/10W 5% 1K 1/10W 5% TRSTN R410 33R 1/10W 5%...
  • Page 53 8) GPIO Block D3V3 TVMicro Bootstrap 3V3_STB Bootstrap Configuration U401K Configuration GPIO 3V3_STB R450 R451 BOOT_STRAP0 BOOT_STRAP0 3V3_STB GPIO_P0 DEMOD_RSTN 3 BOOT_STRAP1 BOOT_STRAP1 4K7 1/10W 5% 4K7 1/10W 5% GPIO_P1 BOOT_STRAP2 BOOT_STRAP2 GPIO_P2 BOOT_STRAP3 BOOT_STRAP3 TEST_MODE R452 BOOT_STRAP2 BOOT_STRAP3 R453 4K7 1/10W 5% GPIO_P3 BL_ON_OFF...
  • Page 54 9) DDRII SDRAM I/F S0_DQ[0:15] D1V8 D1V8 256Mb (16Mx16) DDRII 56G 615 75 U401A HY5PS561621BFP-25 R492 S0_A[0:12] S0 Memory I/F C442 56G 615 66 100R 1/10W 1% S0_DQ15 S0_A13 0.1uF/16V S0_DQ15 S0_A13 S0_DQ14 S0_A12 S0_A0 S0_VREF S0_VREF NANYA S0_DQ14 S0_A12 VREF S0_DQ13 S0_A11...
  • Page 55 10) LVDS I/F CN404 D3V3 U401J NC/CONN U401R U401N LVDS I/F VCC1V1 Power D3V3 Ground LVDS_CKE_P LVDS_D4O_N LVDS_D4O_P C462 C463 C464 C465 C466 C467 C468 LVDS_D3O_N LVDS_D3O_P AF24 L402 NC/90 ohm LVDS_CE_P GND48 GND49 LVDS_CKE_N LVDS_D2O_N LVDS_D2O_P AE24 0.1uF 16V 0.1uF 16V 0.1uF 16V 0.1uF 16V...
  • Page 56 11) Audio Inputs U401E CN601 Audio IN FB601 0R05 1/10W 5% R601 10K 1/10W 5% AV1_Audio_L AV1_Audio_L C601 2.2uF/25V LINE_IN1_L FB602 0R05 1/10W 5% R603 10K 1/10W 5% AV1_Audio_R AV1_Audio_R C602 2.2uF/25V Audio LINE_IN1_R C604 C605 AV2_Audio_L C603 2.2uF/25V AV2_Audio_L LINE_IN2_L ZD601 ZD602...
  • Page 57 12) Audio Amplifier A24V D601 RB160M-60TE25 C629 R634 A24V P12V +5VSB A24V VCC5D 470UF35V 10K 1/10W 5% D3V3 D3V3 R635 PD_MUTE D602 LL4148 PD_MUTE R636 R632 R637 R638 R639 51K 1/10W 5% 100K 1/10W 5% 680R 1/10W 5% R640 R641 R642 AMP_SD U601...

  • Page 58: Audio Output

    13) Earphone/AV Outputs VCC5D 5V_HP R675 D605 C619 C661 RB160M-60TE25 0.1uF/16V 470uF/10V D3V3 EarPhone EarP_L EarP_R R676 R677 U604 Output C662 20K 1/10W 5% 7K5 1/10W 5% R679 R680 AMP_LIN 7K5 1/10W 5% 20K 1/10W 5% C663 R678 11,12 AMP_LIN AMP_RIN IN1- AMP_RIN...
  • Page 59 14) Power +5VSB 3V3_STB 1V8_STB FB704 U702 AIC1084-18PE NC / 33 OHM C767 R740 L706 2.2uH C701 R741 C744 0.1uF /50V U706 C706 C704 100uF 25V G5692P11U 22uF 10V ZD703 10R 1/10W 5% 3V3_STB 0.1uF/16V 220uF/10V From R701 100R 1/10W 5% PS_ON 10K 1/10W L705...

  • Page 60: Power Board

    10.2 Power Board 715G3770P02W20003S D904 B+_390V IN5408 FB901 FB902 D902 R948 FMNS-1106S 0.1 ohm R993 T901 BEAD BEAD R991 100K 1/4W POWER X'FMR L906 100K 1/4W R950 D907 C925 C932 47 OHM 1/4W 310uH 470PF1KV C910 C920 0.1NF2KV 100uF M 450V 1uF/520V R994 R801...
  • Page 61 R801 0.1 ohm B+_390V C806 R801 15PF/3KV CN801 C805 2.2U25V C801 D803 1uF/450V R804 T802 51K +-5% 1/8W R805 Q801 C807 51K +-5% 1/8W 1N5 50V D801 SCS0520P AOTF12N50 CONN SCS0520P R816 10K 1/8W T801 POWER X'FMR CN802 R806 100 OHM 1/8W 33KOHM +-1% 1/8W R802 POWER X'FMR...

  • Page 62: Led Board

    10.3 LED Board 715G4252T02000004S L301 CN301 LED_B LED_R BLUE C301 0.1uF 12-22/BHR6C-C31/2C CONN L302 33G8032 4F HR R303 0R05 1/10W BLUE R304 220 OHM 1/10W 12-22/BHR6C-C31/2C L303 LED_B Q302 MMBT3904 12-22/BHR6C-C31/2C 3 EL R301 0R05 1/10W R302 220 OHM 1/10W LED_R Q301 MMBT3904...

  • Page 63: Key Board

    10.4 Key Board 715G4234K02000004S SW001 VOL+ 2.48V ~ 2.72V TACT SW FWRD H1.5MM R001 7.5K +-1% 1/10W SW002 VOL- 2.04V ~ 2.22V TACT SW FWRD H1.5MM R002 2.7KOHM +-1% 1/10W SW003 1.58V ~ 1.79V TACT SW FWRD H1.5MM R003 1.8K +-1% 1/10W SW004 CN001 1.24V ~ 1.45V...

  • Page 64: Ir Board

    10.5 IR Board 715G4247R02000004S LED01 BLUE 12 10 EL CN01 LED_R U201 LED_B IRRV VOUT 15K OHM 1/10W FM-6038TM2-5AN CONN 0.1uF/16V NC/4.7uF/16V 56T 627 33G8032 5F HR...

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