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AWA MHDV2262-04 Service Manual

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SERVICE MANUAL

LED TV
Model No.
MHDV2262-04
MSD306
Chassis
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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Do you have a question about the MHDV2262-04 and is the answer not in the manual?

Questions and answers

Geoff Tilton
April 10, 2025

How do you auto tune without a remote

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1 comments:
Mr. Anderson
April 10, 2025

The document does not provide instructions for auto tuning the AWA MHDV2262-04 without a remote. It only describes the auto tuning process using the on-screen menu, which typically requires a remote for navigation.

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Summary of Contents for AWA MHDV2262-04

  • Page 1: Service Manual

    SERVICE MANUAL LED TV Model No. MHDV2262-04 MSD306 Chassis 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.: Chapter 1: General Information 1-1. Table of Contents 1. General Information................1-1. Table of Contents 1-2. General Guidelines 1-3. Important Notice 1-4. How to Read this Service Manual ..................3. Location of Controls and Components........... 3-1. Board Location 3-2.
  • Page 3 Service Manual Model No.: 8. Measurements and Adjustments..…………......8-1. How to enter into the factory model 8-2. How to update software 8-3. How to enter into the Hotel Model 9. Trouble-shooting………….............. 9-1. Simple Check 9-2. Main Board Failure Check 9-3. Panel Failure - 02 -...

  • Page 4: General Guidelines

    Service Manual Model No.: 1-2. 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: Safety Check After Repairment

    Service Manual Model No.: 1-3-6 Safety Check after Repairment in the original positions, or whether there are the positions which are deteriorated around the serviced places serviced or not. Check the insulation between the antenna terminal or external metal and the AC cord plug blades. And be sure the safety of that. General Servicing Precautions 1.

  • Page 6: Ordering Spare Parts

    Service Manual Model No.: 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: Photo Used In This Manual

    Service Manual Model No.: 1-3-8. 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. 1-4. How to Read this Service Manual Using Icons: each icon is described in the table below: Note:...
  • Page 8 Service Manual Model No.: Model MHDV2262-04 Screen Size 21.5 inch Aspect Ratio 16:9 Resolution 1920x1080 5.0 (GRAY TO Response Time (ms) GRAY) Angel of View 160(H)/160(V) Color Display 16.7M No. of Preset Channels 1000 OSD Language English Color System PAL/SECAM...

  • Page 9: Location Of Controls And Components

    Service Manual Model No.: 3. Location of Controls and Components 3-1 Board Location A Board Description A Board Integration Mainboard 515C3212M21 LVDS WIRE 4031C226209 3-2 Main Board - 08 -...

  • Page 10: Function Description

    Service Manual Model No.: 3-2-1 Function Description: Main Board Process signal which incept from exterior equipment then translate into signal that panel can display. Main board connector Keypad and remote connector (J28) Pin number Signal name Description LAMP RED LED_R LED_G LAMP GREEN STANDBY...
  • Page 11 Service Manual Model No.: 3-3. LED Panel CLAA215FA10 - 10 -...
  • Page 12 Service Manual Model No.: 3-4-1.Connector de finition PIN NO. REMARK FUNCTION RXO0- minus signal of odd channel 0(LVDS) RXO0+ plus signal of odd channel 0(LVDS) RXO1- minus signal of odd channel 1(LVDS) RXO1+ plus signal of odd channel 1(LVDS) RXO2- minus signal of odd channel 2(LVDS) RXO2+ plus signal of odd channel 2(LVDS)

  • Page 13: Disassemble And Assemble

    Service Manual Model No.: 4. Disassemble and assemble 4-1 Remove the Pedestal faces upward 4-2Remove the Back Cover unit. 4-3. Remove the adhesive tape Remove the adhesive tape indicated on the - 12 -...

  • Page 14: Remove The Main Board

    Service Manual Model No.: 4-4 Remove the Main board CN804 CN800 CN805 CN806 4-5 Remove the speaker Take out the speaker - 13 -...

  • Page 15: Remove The Remote Control Board

    Service Manual Model No.: 4-6 Remove the remote control take out the remote control board - 14 -...

  • Page 16: Installation Instructions

    Service Manual Model No.: 5. Installation Instructions 5-1 External Equipment Connections Accessories Battery User GUIDE Remote Control Antenna Connection Connect one end of a coaxial cable (not included) to the ANT IN jack on the back of your TV/DVD combo, then connect the other end of the cable into the antenna or cable TV wall outlet.
  • Page 17 INSTALLATION AV EQUIPMENT You can use the input and output terminals on the TV set as follows. - OR - N.B. Only one HDMI input can be selected at a time. HDMI VIDEO EQUIPMENT with YPbPr output (Component video output) Audio Component video Yellow (Composite video)
  • Page 18 INSTALLATION REAR AV Connections AV OUT PUT VIDEO VIDEO All the terminals are (from left to right): AC POWER INPUT, YPbPr (component video) inputs, L+R Audio inputs, AV composite video input AV output (composite video and L+R audio). Note: 1. VIDEO and YPbPr share the same L+R audio inputs. 2.

  • Page 19: Preset Mode

    INSTALLATION STEPS: Be sure both the TV and computer are set to Power off. 1.Connect a VGA and audio cable. 2.Connect the power cord. 3.Power on the TV, switch to PC mode. 4.Power on the PC. This connection and power-up sequence is very important.

  • Page 20: Hdmi Connections

    Service Manual Model No.: 5-2 HDMI Connections When the source device(DVD player or Set Top Box) supports HDM How To Connect 1. Connect the source device to HDMI port of this TV with an HDMI cable(not supplied with this product). 2.
  • Page 21 Service Manual Model No.: Cable sample HDMI Cable (not supplied with the product) HDMI to DVI Cable ( not supplied with the product) Analog Audio Cable (Stereo to RCA type) (not supplied with the product) -19 -...
  • Page 22 Service Manual Model No.: 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: Use the attached power cord only. electrician replace the obsolete outlet.

  • Page 23: Operation Instructions

    Service Manual Service Manual Model No.: 6. Operation Instructions 6-1 Front panel controls Front panel Remote control sensor. Indicator LED: BLUE = POWER ON. = Stand-by. Key board (on side of TV). Main power switch (on bottom panel of TV) The remote control needs to be pointed directly, within +/- 30 , of the sensor on the front of the 30 30...

  • Page 24: Setting Up Your Remote Control

    Service Manual Model No.: 6-3 Setting Up Your Remote Control REMOTE CONTROL POWER :To set the TV to standby or power on. :In USB mode, used as reverse key, in teletext mode used as subpage key. : In USB mode, used as forword key, in teletext mode used as reveal key.
  • Page 25 REMOTE CONTROL TELETEXT Teletext is an information system broadcast by certain channels which can be consulted like a newspaper. It also offers access to subtitles for viewers with hearing problems or who are not familiar with the transmission language (cable networks, satellite channels, etc.) Press: You will obtain: This is used to call or exit teletext modes.

  • Page 26: Electrical Parts

    7. Electrical parts Circuit Diagram 7-1. RX3B0P MIUA_DQS0 Page 9 RX3B0P RX3B0P MIUA_DQS0 MIUA_DQS0 RX3B0N MIUA_DQS0B RX3B0N RX3B0N MIUA_DQS0B MIUA_DQS0B RX3B1P MIUA_DQS1 RX3B1P RX3B1P MIUA_DQS1 MIUA_DQS1 RX3B1N MIUA_DQS1B RX3B1N RX3B1N MIUA_DQS1B MIUA_DQS1B RX3B2P MIUA_DQM1 RX3B2P RX3B2P MIUA_DQM1 MIUA_DQM1 Page 5 RX3B2N Page 8 MIUA_DQM0...
  • Page 27 MSD306 POWER SUPPLY R269 R269 U37靠近CA16放置 1.31V/1100mA 1.32V 3.29V/380mA 3.3VU AMS1117-3.3 AMS1117-3.3 5Vstb 3.3VU C121 C121 C122 C122 C123 C123 C124 C124 C125 C125 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u 0.1u NC/0.1u NC/0.1u R270 R270 R271 R271 3.29V/150mA 3.3VA AMS1117-3.3 AMS1117-3.3 3.3VA...
  • Page 28 +12V PVCC MUTE Control PVCC PVCC C167 C167 FB_56OHM_500MA FB_56OHM_500MA 100uF/16V 100uF/16V R285 R285 270K 270K C174 C174 C176 C176 R291 R291 R292 R292 10uF 10uF 220uF/16V 220uF/16V MUTEn R299 R299 MUTEO C180 C180 3906 3906 NC/10uF/16V/220uF/16V NC/10uF/16V/220uF/16V R300 R300 4.7K 4.7K R301...
  • Page 29 PANEL POWER VCCLCDFN Q1 AO3407 Q1 AO3407 VCCLCD 12.21V +12V C4 0.1uF C4 0.1uF 100K 100K 0.1uF 0.1uF 2N3904 2N3904 LCDON LCDON 4.7K 4.7K 0.01uF 0.01uF R2251 R2251 4.7K 4.7K 112mA +12V FB_56_OHM_4A FB_56_OHM_4A 5VSTB# 5.12V 320mA 5.12V 5Vstb C1072 C1072 C1079 C1079...
  • Page 30 SCART R:10ohm,C:1uF 47nF Location near MST.IC FB_11_OHM_500MA FB_11_OHM_500MA SC1_FB AV1-V SCART_AV SC1_FB SCART_AV C1073 C1073 100p 100p AV1-V VOUT NC/V800AA NC/V800AA SC_ALOUT SC_ALOUT SC_AROUT Keep AGND trace with signal SC_AROUT R:10ohm,C:1uF 47nF Location near MST.IC Keep spacing for L/R C1074 C1074 C1075 C1075...

  • Page 31: Vga Input

    AV1/YPbPr/DVD INPUT YINO R & C Location near MST.IC FB_11_OHM_500MA FB_11_OHM_500MA PBIN PBIN PBIN PBIN PBINO YINO C60 47nF C60 47nF YINO+ PBIN YINO+ FB_11_OHM_500MA FB_11_OHM_500MA PBINO R2300 R2300 C63 47nF C63 47nF PBINO+ PBINO+ PRIN PRINO PRINO R2301 R2301 C64 47nF C64 47nF PRINO+...
  • Page 32 RX2B2P DATA2+ DATA2 SHIELD RX2B2N DATA2- RX2B1P DATA1+ DATA1 SHIELD RX2B1N DAT1A- RX2B0P DATA0+ DATA0 SHIELD RX2B0N DATA0- RX2BCLKP CLK+ CLK SHIELD RX2BCLKN CLK- HDMI_CEC RX2B2P RX2B2P RX2B2N RX2B2N RX3B2P DDC2BSCL RX2B1P RX3B2P RX2B1P RX3B2N DDC2BSDA RX2B1N RX3B2N RX2B1N RX3B1P RX2B0P RX3B1P RX2B0P...
  • Page 33 PAL /DVB-T SYSTEM POWER FOR ATV TUNER 3906 3906 RF_AGC_T RF_AGC CERAMIC RF_AGC IF_AGC_T 100R 100R IF_AGC U810 U810 C1084 C1084 IF_AGC +12V C105 C105 SY8101B SY8101B 0.1uF 0.1uF TDTC-G0X1D TDTC-G0X1D L809 L809 L810 L810 VTVCC1 0.1uF 0.1uF NC/0.1uF NC/0.1uF L808 FB_56OHM_4A L808 FB_56OHM_4A 10uH_1.5A...
  • Page 34 CARD DETECT PWR CTRL 5V card FB_11_OHM_500MA FB_11_OHM_500MA R148 R148 R149 R149 D812 D812 BAV99L BAV99L PCM_CD1_N VCC-PCMCIA PCM_CD_N R150 R150 100R 100R PCM_CD2_N R153 R153 R394 R394 NC/1K NC/1K PCMCIA Connector VCC-PCMCIA VCC-PCMCIA PCMCIA_CNT PCMCIA_CNT PCM_CD1_N PCM_D3 CD1# TS_MDO3 PCM_D4 MDO3 TS_MDO4...
  • Page 35 PCM_D0 PCM_D0# MSD306 DEBUG PORT TS_MOSTART TS_MOSTART0 TS_MOSTART 22RX4 22RX4 PCM_D2 PCM_D2# MSD306 MSD306 MSD306 MSD306 TS_MDO1 RP15 RP15 TS_D1 PCMCIA PCMCIA PCM_D1 22RX4 22RX4 PCM_D1# 5Vstb HDMI HDMI AUDIO AUDIO TS_MDO0 TS_D0 PCM_D4 PCM_D4# PCM_D0# TS1_D0 PAD_PCM_D[0] PAD_TS1_D[0] RX2B0N AV1-Lin TS_MDO6 RP33...
  • Page 36 RP17 RP17 RP16 RP16 22RX4 22RX4 22RX4 22RX4 MIUA_DQS0 MA_DQS0 MIUA_DQS0 MIUA_DQS0B MA_DQSB0 MIUA_MCLK MA_MCLK MIUA_DQS0B MIUA_MCLK 1.8VA MIUA_MCLKZ MA_MCLKZ MIUA_MCLKZ 22RX4 22RX4 RP18 RP18 MIUA_DQS1 MA_DQS1 MIUA_DQS1 MIUA_DQS1B MA_DQSB1 NT5TU32M16CG/NT5TU64M16DG NT5TU32M16CG/NT5TU64M16DG MIUA_DQS1B MA_DQM1 MA_DQM0 MA_DQS0 A_MVERF Close to DRAM LDQS Vref MIUA_ODT...

  • Page 37: Wiring Connection Diagram

    Service Manual Model No.: 7-2 .Wiring Connection Diagram Name Connection Wire(For Speaker) Connection Wire(Power Wire) LVDS Wire Connection wire(Blacklight ) Connection Wire(For Keyboard and Remote) - 34 -...

  • Page 38: Measurements And Adjustments

    Service Manual Model No.: Measurements and Adjustments Installation Guide 1.CHANNEL MENU The installation guide only appear when the TV The first item of the MENU is channel menu( for first time turn on or reset to factory set. TV or DTV source only). WELCOME! Auto Tuning Thank you for choosing...

  • Page 39: Sound Menu

    Favourite DTV Manual Tuning Press to choose the program , press FAV button , it will show on the right side of the VHF CH program.Choose the FAV program , press FAV button again , you can cancel the FAV, will disappear .

  • Page 40: Time Menu

    4.TIME MENU NOTE: The forth item of the menu is the TIME MENU Restore factory default will clear all the programs You can adjust the clock, power on/off time, and password. sleep time etc Press to move, press OK to adjust.

  • Page 41: Pvr Function

    Record Press the red key ,It can set the program OSD Language English to be recorded. Audio Languages UK Subtitle Languages UK Remind Country UK PVR File System Press the blue key to choose one program < > OPTION Restore Factory Default and set up one reminder time, the TV screen will Automatic power-down(4H) Home/Shop Mode...
  • Page 42 2.Record the program (Suggest to format the format the device by “High Speed Fs...”, which can speed up As playing the DTV source, choose the channel and click “record”, the record the record.) frame will pop up. Click “record” again, Format disk the record frame will disappear and the “REC”...
  • Page 43 9.Timeshift function 1.Prepare to record the program 00:00:33/00:04:22 This TV allows you to pause and record the currently watched digital program to a USB storage device, and to resume to the point Play Prev. Next Stop Pause where it was paused. NOTE: Formatting a USB 2.0 storage device will NOTE:...
  • Page 44 Time Shift limitations: 1. When the Time Shift feature is activated, only the PLAY/PAUSE/STOP/FWD/REV/ VOL+/VOL-/MUTE keys and some basic operation keys (ENTER/EXIT/navigation keys) are available. 2. Video playback may not be smooth and skip if USB recording speed does not meet the minimum requirements .
  • Page 45 10.USB Player Press source key, and selsct USB in soure 00:00:33/00:04:22 list, press OK button to enter the USB menu. Pause Prev. Next Stop Repeat ALL Set A Press to select the function icon, press OK USB 2.0 button to confirm the function. Press or EXIT button to exit the control bar.

  • Page 46: How To Enter Into The Factory Model

    Service Manual Model No.: 8.1 How to enter into the factory model 8.1 How to enter into the factory model 8.1 How to enter into the factory model 1. You can press "source-2-5-8-0" to go into factory setting. Presse the key "exit" to shut the factory setting.

  • Page 47: How To Update Software

    Service Manual Model No.: 8.2 How to update software Haier MSD308 F/W upgrade with USB SOP Step 1: Ready for F/W Upgrade 1.1 Prepare a USB memory . it from computer’s USB port! Step 2: F/W Upgrade 2.1 AC ON 2.2,then input USB , press "MENU"...

  • Page 48: How To Enter Into The Hotel Model

    Service Manual Model No.: 8.3 How to enter into the hotel model 1. You can press "source-1-0-0-1" to go into the hotel model. Presse the key "exit" to shut the hotel model. Content: 1.Hotel Mode: Hotel mode switch Panel key lock 2.Panel Key Lock: Hotel mode can adjust the maximum volume 3.Max Volume:...

  • Page 49: Trouble-Shooting

    Service Manual Model No.: 9. Trouble shooting 9-1. Simple check - 46 -...

  • Page 50: Main Board Failure Check

    Service Manual Model No.: 9-2. Main board failure check No picture but ha ve sound Check if U3: Replace U3 or Pin11(3.3V) 、Pin20(5V)、 Pin12(5V) Check if there is +26V U5: Pin2(0.72V)、 at C931 Pin3(5V)、Pin4(12V) is normal Check if there is 5V at Pin35 in J20 Replace Check if Q103、...
  • Page 51 No sound but have picture Check if there is sound Check the input source input signal check the signal input circuit of Check if there is signal at C191 and C192 C191, C192 Check if there is input at Pin3、Pin5 of U25 Replace U8 Change U25 Check if there is output at Pin1、Pin7 of U25...
  • Page 52 No sound No picture Check if there is voltage pressure in the pad of the CHANGE L806（12V），L807 Q810 （5V） Check if the voltage pressure of J7 Pin2 is high Change U8 voltage pressure (More than 3V) Change Mainboard - 49 -...
  • Page 53 No sound No picture No light Check if the power cord Connect the power is correctly connected cord to the socket Check if there is voltage Replace D806 or D811 pressure in J3(12V)、 J8(5Vstb) Replace Chcek if L80（1.32V）、 Remote U14Pin2（1.8V）、 U11Pin2 Control Board （3.3V）、...
  • Page 54 Poor sound Poor sound Verify if sound system is Change sound correct . system For ease of use, recommend that customer format the picture and sound settings in the automatic option. Update the software and Still having make the reboot; problems or change the Mainboard...
  • Page 55 No color for some channel program (black and white) No color for some channel program (blac k and white) Verify if the same Check out of picture and sound problem exists in system of this channel other channels Change the channel to the right check out of picture sound system (PAL-M/N NTSC-M) and sound system...
  • Page 56 How to know whether the Power board is broken? Check if the power cord Reconnect the power cord with the outlet or Power board. connect well? Power on and check if 5V standby on the Replace U8 Power board exists ? Check if there is high Replace U8 level (2.5V-5.0V) at...
  • Page 57 CI card can not d ecode the interfer ence? check if the pins of CI card is wrongly conne change CI card cted Check if the power su Replace L93 pply of CI is normal or L93 is burnt. Still having change the maiboard problems - 54 -...
  • Page 58 • Mainboard not work Panel not work  • 1. check if the power supply have 1. check if the voltage input and  12V and 5V output output of boost IC is working • 2.Verify if the DC/DC convertors normally.
  • Page 59 Power board not work  1.Verify if the power cord connect well?  2. check if the power supply if working  normally ; check if the power supply of +5Vstandby is working normally; 3. check if the POWER ON/OFF ...

  • Page 60: Panel Failure

    Service Manual Model No.: 9-3. Pannel failure Failure Mode Part Name Description Phenomena Failure cause Block Defect :TCP cracking or cracking Dim or L/D :TCP Sunken V B/D Vertical bar :TCP lead cracking :ACF bonding short :Awful environment and something electric enter V Dim Vertal gray line into LCD...
  • Page 61 Service Manual Model No.: Part Name Description Phenomena Failure cause I n c o m i n g I n s p e c t i o n Standard Bright dot dark dot in Dot Defect pannel Bladder between Polarizer and top glass Polarizer Bubble Bladder in Polarizer...
  • Page 62 Service Manual Model No.: Failure Mode Part Name Description Phenomena Failure cause White Screen B/L normal, only white screen display M a y b e c a u s e d by surge current Black Screen B/L normal, and EDS only Black screen display FIIcker...
  • Page 63 Service Manual Model No.: Failure Mode Part Name Description Phenomena Failure cause Mechanlcal When Caused Nolse turn panel,appear b y M e c h a n i c a cacophony noise of backlight unit Ripple Connectric circle Causeed by between mechanism and pannel B/L off...
  • Page 64 Service Manual Model No.: Failure Mode Part Name Description Phenomena Failure cause Brightness B/L unit badness at bottom of LCM Light leakage brighter than normal B / L b r i g h t n e s s Sheet in B/L unit Mechanlcal or B/ is uneven asymmetric...

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