Haier 48E2500 Service Manual
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Haier 48E2500 Service Manual

Haier 48E2500 Service Manual

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SERVICE MANUAL
LED TV
MODEL No. 48E2500
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service 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.

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  • Page 1 SERVICE MANUAL LED TV MODEL No. 48E2500 WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

  • Page 2: Table Of Contents

    Service Manual Model No.: 48E2500 Table of Contents 1. General Information ........3 1-1.
  • Page 3 Service Manual Model No.:48E2500 9. Measurements and Adjustment ..... . .36 9-1 Operation Guide ......42 9-2 Factory Mode .

  • Page 4: General Information

    Service Manual Model No.: 48E2500 1. General Information 1-1. General Guidelines When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
  • Page 5 Service Manual Model No.: 48E2500 Safety Component Components identified by mark have special characteristics important for safety. 1-2-6 Safety Check after Repair Confirm that the screws, parts and wiring which were removed in order to service are put in the original positions, or whether there are the positions which are deteriorated around the serviced places serviced or not.
  • Page 6 Service Manual Model No.: 48E2500 Electrostatically Sensitive (ES) Devices Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip"...

  • Page 7: How To Read This Service Manual

    Service Manual Model No.: 48E2500 1-2-8. Photo used in this manual The illustration and photos used in this Manual may not base on the final design of products, which may differ from your products in some way. 1-3. How to Read this Service Manual Icons: Icons are used to attract the attention of the reader to specific information.

  • Page 8: Specifications

    Service Manual Model No.: 48E2500 2. Specifications Model 48E2500 1080 Response Time (ms) ° 8 ° 8 English/French/Spanish OSD Language ATSC/NTSC/M/MTS Video/Audio System Dimensions with Stand (W x H x D) 43.19X27.8X10.12Ib Dimensions w/o Stand (W x H x D) 43.19X25.39X3.54 Ib Weight with Stand 23.9 Ib...

  • Page 9: Location Of Controls And Components

    Service Manual Model No.: 48E2500 3. Location of Controls and Components 3-1 Component Location Component LED Panel System Main Board Keypad and IR Line Panel T-Con Board Keypad Board IR LED Board 3-2 Main Board - 8 -...
  • Page 10 Service Manual Model No.: 48E2500 3-2-1 Function Description Process signal which incept from exterior equipment then translate into signal that panel can display. 3-2-2 Connector Definition CNB2(2PIN/2.0): POWER SUPPLY FOR UPGRADE CONNECTOR SYMBOL DESCRIPTION Ground +12V DC Power Supply CN6(14PIN/2.0): IR& KEY BOARD CONNECTOR...
  • Page 11 Service Manual Model No.: 48E2500 No Connection RXO0- LVDS ODD 0- Signal RXO0+ LVDS ODD 0+ Signal RXO1- LVDS ODD 1- Signal RXO1+ LVDS ODD 1+ Signal RXO2- LVDS ODD 2- Signal RXO2+ LVDS ODD 2+ Signal Ground RXOC- LVDS ODD Clock- Signal...
  • Page 12 Service Manual Model No.:48E2500 *CN7 (3PIN/2.0): EXT-LINE OUT CONNECTOR SYMBOL DESCRIPTION L_RO Audio Lineout Right Channel Output Ground L_LO Audio Lineout Left Channel Output CNB1 AC INPUT CONNECTOR SYMBOL DESCRIPTION LIVE No Connection NEUTRAL 7. Electrical Characteristics 7.1 Input Electrical Specifications...

  • Page 13: Disassembly Procedures

    Service Manual Model No.: 48E2500 4. Disassembly Procedures 1. Remove the screws securing the pedestal. Torque: 3.8 ± 0.53 kgf-cm. 2. Remove the screws securing the back cover. Torque: 3.8 ± 0.53 kgf-cm. - 12 -...
  • Page 14 Service Manual Model No.: 48E2500 3. Remove the screws wall pieces.Torque:3.8kgf-cm 4. Remove all tapes on the cables. - 13 -...
  • Page 15 Service Manual Model No.:48E2500 5. Disconnect the cables and remove them from the unit. 6. Remove the screws securing the main board, side I/O cover and bottom I/O cover, then remove them from the unit. Torque: 3.8±0.3 kgf-cm. - 14 -...
  • Page 16 Service Manual Model No.: 48E2500 7. Remove the key board and IR board Torque: 3.8±0.3 kgf-cm. 8. Disconnect of conductive fabric and LVDS cable - 15 -...
  • Page 17 Service Manual Model No.: 48E2500 Remove the positioning block and remove T-CON plate from the positioning block 10. Remove the panel from the front bezel. - 16 -...

  • Page 18: Accessories

    Service Manual Model No.: 48E2500 5. Accessories Remote Control/2 x AAA Batteries User Manual INPUT 48E2500 RECALL MUTE MENU BACK DISPLAY EXIT SLEEP WIDE AUDIO PICTURE CH.LIST FAVORITE - 17 -...

  • Page 19: Installation Instructions

    Service Manual Model No.: 48E2500 6. Installation Instructions PREPARATION TURNING ON THE TV Do not apply pressure to the screen display IMPORTANT: area which may compromise the integrity of the display. 1. Install the stand and place the TV on a solid surface.
  • Page 20 Service Manual Model No.: 48E2500 PERIPHERAL CONNECTION AND CONTROLS UNDER CONTROL POWER VOL- VOL+ MENU INPUT Item Description Item Description Connect headphones to this jack. Press to select the input source. HEADPHONE When headphones are inserted, Press the VOL+ button to change to INPUT the TV speakers will be muted.
  • Page 21 Service Manual Model No.: 48E2500 MAKING CONNECTIONS CONNECTING TO AN ANTENNA/CABLE WALL Using composite cable (good) JACK COMPOSITE OUT VIDEO NOTE Cables are often color-coded to match color-coded jacks. CONNECTING EXTERNAL AUDIO/VIDEO DEVICE CONNECTING HEADPHONES Using HDMI cable (best) HDMI2...
  • Page 22 Service Manual Model No.:48E2500 Cable Sample Connection Type and Jack Cable Connector HDMI video/audio Component video (requires an audio connection) Composite video (requires an audio connection) Analog audio input Coaxial digital audio Note • The cables are not included in the package.

  • Page 23: Operation Instructions

    Service Manual Model No.:48E2500 7. Operation Instructions 7-1 Side Control POWER VOL- VOL+ MENU INPUT Item Description Press to select the input source. Press the VOL+ button to change to INPUT the selected input source. Press to open or close the on-screen MENU menu.

  • Page 24: Rear Terminals

    Service Manual Model No.: 48E2500 7-2 Rear Terminals Item Description Connect headphones to this jack. HEADPHONE When headphones are inserted, the TV speakers will be muted. Connect a coaxial audio cable from a sound bar, stereo system, COAXIAL receiver, etc.

  • Page 25: Using Remote Control

    Service Manual Model No.:48E2500 7-3 Using Remote Control - 24 -...

  • Page 26: Electrical Parts

    Service Manual Model No.: 48E2500 8. Electrical Parts 8-1 System Block Diagram MAX 2000mA 1000mA Panel PW_ON 230mA M_1V8 PW_ON M_5V 500mA 900mA MHL PW 5V_STB 800mA M_1.15V DC-DC DCDC 3.3V 200mA STB_3V3 200mA TUNER LVDS OUT PANEL USB0 IN...
  • Page 27 Service Manual Model No.:48E2500 8-2 Circuit Diagram - 26 -...
  • Page 28 Service Manual Model No.: 48E2500 - 27 -...
  • Page 29 Service Manual Model No.: 48E2500 5V_STB 5V_M QM32 3V3_STB RM33 CM32 1uF-0402-X5R-± 20%-6.3V 22ohm-0402-± 5%-1/16W RM34 CTD0504-4R7-M 5V_STB QM31 5V_STB TEST 4K7ohm-0402-± 5%-1/16W POW_EN KMBT3904 100Kohm-0402-± 5%-1/16W 10Kohm-0402-± 5%-1/16W WPM2341A-3/TR 10Kohm-0402-± 5%-1/16W NC/0.1uF-0402-X5R-± 20%-16V MP1470GJ-Z 10uF-0805-X5R-± 20%-16V NC/1uF-0402-X5R-± 20%-16V BL_ON 100Kohm-0402-±...
  • Page 30 Service Manual Model No.:48E2500 1V8_DDR 1.15V_STB CD10 MSD3393LU 0.1uF-0402-X5R-± 20%-16V 1uF-0402-X5R-± 20%-6.3V 1uF-0402-X5R-± 20%-6.3V 1uF-0402-X5R-± 20%-6.3V 1uF-0402-X5R-± 20%-6.3V 0.1uF-0402-X5R-± 20%-16V 3V3_STB 3V3_STB HDMI2_RX1_N HDMI3_DET RX1N_B SAR1 HDMI2_RX1_P RX1P_B SAR0 CL17 HDMI2_RX2_N RX2N_B AVDD_MOD 3V3_STB CL18 HDMI2_RX2_P 0.1uF-0402-X5R-± 20%-16V 0.1uF-0402-X5R-± 20%-16V...
  • Page 31 Service Manual Model No.: 48E2500 - 30 -...
  • Page 32 Service Manual Model No.: 48E2500 HDMI HDMI HDMI - 31 -...
  • Page 33 Service Manual Model No.: 48E2500 PJ-325 RV19 CV19 PC_RIN RSPK VGA_RIN LSPK RV20 CV20 PC_LIN 5V_STB 75ohm-0402-±5%-1/16W NC/10pF-0402-NPO-± 5%-50V RV22 RV21 4K7ohm-0402-±5%-1/16W 33ohm-0402-±5%-1/16W 4K7ohm-0402-±5%-1/16W 0.047uF-0402-X7R-±10%-16V 15Kohm-0402-±5%-1/16W 100ohm-0402-± 5%-1/16W WLHD-051A 18Kohm-0402-±5%-1/16W 100ohm-0402-± 5%-1/16W 33ohm-0402-±5%-1/16W RV15 0.047uF-0402-X7R-±10%-16V RV17 GNDGND 15Kohm-0402-±5%-1/16W RV16 VGA_SDA...
  • Page 34 Service Manual Model No.:48E2500 PADGND IF_OUTN_2/GPO_1 IF_OUTP_2/GPO_2 RESET_N IF_OUTN_1 VDD_1P8_3 IF_OUTP_1 GND_XTAL VDD_3P3_2 XTAL_P VDD_1P8_2 XTAL_N - 33 -...

  • Page 35: Circuit Diagram

    Service Manual Model No.: 48E2500 PGND - 34 -...

  • Page 36: Wiring Connection Diagram

    Service Manual Model No.: 48E2500 8-3 Wiring Connection Diagram Connection Connection wire for keypad Connection wire for IR LED Connection wire for speakers LVDS wire Connection wire for power - 35 -...

  • Page 37: Measurements And Adjustment

    Service Manual Model No.: 48E2500 9. Measurements and Adjustment 9-1 Operation Guide - 36 -...
  • Page 38 Service Manual Model No.: 48E2500 - 37 -...
  • Page 39 Service Manual Model No.: 48E2500 - 38 -...
  • Page 40 Service Manual Model No.: 48E2500 - 39 -...
  • Page 41 Service Manual Model No.: 48E2500 - 40 -...
  • Page 42 Service Manual Model No.: 48E2500 MEDIA Select stop slide show play back. Select to change repeat mode. You can select The USB Media Player allows you to connect a USB Repeat One/Repeat ALL/None. device to your TV and play music or photos.

  • Page 43: Operation Guide

    Service Manual Model No.: 48E2500 - 42 -...

  • Page 44: Factory Mode

    Service Manual Model No.: 48E2500 9-2 Factory Mode 1.1 Power on Upgrading STEP 1 Make sure that the .bin file has been put under the root directory of USB removable device. STEP 2 Link the USB device to the TV mainboard , make sure the current is switched off ,re-power on .If the LED light turns out to be red alternating with...

  • Page 45: Software Update

    Service Manual Model No.:48E2500 9-3 Software Update Picture 1.2 Software Update (USB) Picture STEP 5 Disconnect to the power and connect to the power, the upgrading could be f nished. 9-4 Hotel Mode Hotel mode allows user to set certain default settings, limit access to certain controls and adjustments so that settings cannot be altered by other people.

  • Page 46: Troubleshooting

    Service Manual Model No.: 48E2500 10. Troubleshooting 10-1 Simple Check Please make these simple checks before calling service. These tips may save you time and money since charges for receiver installation and adjustments of customer controls are not covered under your warranty.
  • Page 47 Service Manual Model No.: 48E2500 1.Power Board Diagram Power Output Recti filter input convertor filter circuit fier Flyback Feed converter back ON/ 0FF LED CV 12V_out ADJ/PWM control circuit 2.Power Board Service Guide Non output, IR indicator light slake Check if 12V...

  • Page 48: Power Board Troubleshooting

    Service Manual Model No.: 48E2500 3.Power Board Service Guide IR indicator light up but backlight slake Check if LED output cable is connect correction Check ADJ&PWM& ON/OFF Control signal check is brightness is in dim status Check PFC Check EB202 voltage is 380V...

  • Page 49: Power Troubleshooting

    Service Manual Model No.: 48E2500 Power Supply Trouble Check Pin2 of CNB2 for 12V Check if the power Check power on the TV board. board is OK? Check U2 for 5V_STB , UL1 for Repair the power board. 3V3_STB and UD1 for 1.15V_STB Repair the abnormal circuit : 1.5V_STB—check U2...

  • Page 50: Display Troubleshooting

    Service Manual Model No.: 48E2500 Display Trouble white screen White screen Check if the voltage of panel power supply is normal(depend on panel) Check output signal Check the circuit of QM1 from U1(MSD3393) Change the panel Change U1(MSD3393) or the cable to panel...

  • Page 51: Audio Troubleshooting

    Service Manual Model No.: 48E2500 Audio Trouble sound) No sound Check the AMP power Check if PIN1 of the AMP chip Check the power supply circuit voltage is normal Check the control circuit Check the input signal Check the circuit from U1...

  • Page 52: Function Troubleshooting

    Service Manual Model No.: 48E2500 Function Trouble PC mode Picture is not Picture Missing color, No signal in center dithering deflection color Check if the R.G.B Check if the signal of input signal of U1 V-sync,H-sync is OK is normal Do “reset”...
  • Page 53 Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com Printed in China...

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