AWA MHDV2262-04 Service Manual Download

Page: 27 / 64

V8ADJ

1.32V

5VA

GND

+12V

+8V

GND

1.8VA

3.3VU

5Vstb

3.3VA

5VA

2.5VA

1.32V

2.5VA

5VA

3.3VA

1.8VA

3.3VU

3.3VA

SHEN ZHEN MTC MULTIMEDIA CO.,LTD

DESIGN:YANXUEWU

MODEL: MSDV3205-L2

TITLE:MST_POWER

CHECKED:

PART NO.:

DWG NO.:

APPRD:

SHEET: 10 OF 12

VER:1.0

MSD306 POWER SUPPLY

8.12V

1.27V

1.02A

+1.2V FOR MST CORE

U37

靠近

CA16

放置

230mA(DDR2/PCS)

3.29V/380mA

1.31V/1100mA

3.29V/150mA

2.54V/230mA

1.84V/110mA

1.31V

C154

15nF

C154

15nF

U12

AMS1117-3.3

U12

AMS1117-3.3

C132
NC/0.1u

R279

470R

R279

470R

C127
0.1u

C165

10uF

C165

10uF

C140
0.1u

C128
NC/0.1u

R280

U16
MP1482

VCC

AGND

COMP

R273

C162

15nF

C162

15nF

R281

6.8K

R281

6.8K

C136
10uF

C141
0.1u

C123
0.1u

C142
0.1u

U11

AMS1117-3.3

U11

AMS1117-3.3

C137
0.1u

C135
0.1u

C158

0.1u

C158

0.1u

C163

470uF

/16V

C163

470uF

/16V

C152

100uF/16V

C152

100uF/16V

C134
NC/0.1u

C159

1nF

C159

1nF

R274
1K

C131

470uF

/16V

C131

470uF

/16V

C143
0.1u

C121
0.1u

R282

4.7K

R282

4.7K

C138
0.1u

C307
0.1u

C151

0.1uF

C151

0.1uF

C150

100uF

/16V

C150

100uF

/16V

C148
0.1u

R278

100K

R278

100K

C126

100uF

/16V

C126

100uF

/16V

C124
0.1u

C133
0.1u

C144
0.1u

R269

C157

0.1u

C157

0.1u

C139
NC/0.1u

R277

2.49K/%1

R277

2.49K/%1

C153

0.1uF

C153

0.1uF

R270
0R

R271

C125

NC/0.1u

C125

NC/0.1u

C122
0.1u

R275

470R

R275

470R

C164

0.1u

C164

0.1u

L80

15H_2A

L80

15H_2A

C146
0.1u

C306
0.01u

C156

0.1u

C156

0.1u

C160

10uF

C160

10uF

U14

AMS1117-ADJ

U14

AMS1117-ADJ

U13

AMS1117-ADJ

U13

AMS1117-ADJ

U15

AMS1117-ADJ

SOT223

U15

AMS1117-ADJ

SOT223

Adjust

VIN

VOUT

TAB

R272
0R

C130
0.1u

C147
0.1u

C129

100uF/16V

C129

100uF/16V

C155

0.1u

C155

0.1u

C145
0.1u

C149
0.1u

R276
220R

C161

0.1u

C161

0.1u

- 24 -

Summary of Contents for MHDV2262-04

Page 1: ...s 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 WARNING MHDV2262 04 Model No ...

Page 2: ... Panel 4 Disassemble and Assemble 4 1 Remove the Pedestal 6 8 8 8 8 10 12 12 4 2 Remove the Back Cover 12 4 3 Remove the Adhesive Tape 12 4 4 Remove the Main Board 13 4 5 Remove the Speaker 13 4 6 Remove the Remote Control Board 14 5 Installation Instructions 15 5 1 External Equipment Connections 15 5 2 HDMI Connections 18 6 Operation Instructions 21 6 1 Front Panel Controls 6 2 Back Panel Control...

Page 3: ...le shooting 46 9 1 Simple Check 46 9 2 Main Board Failure Check 9 3 Panel Failure 47 57 8 1 How to enter into the factory model 8 2 How to update software 43 44 8 Measurements and Adjustments 35 8 3 How to enter into the Hotel Model 45 ...

Page 4: ...instructions in the literture accompanying the appliance 1 3 2 Be careful to the electrical shock 7R SUHYHQW GDPDJH ZKLFK PLJKW UHVXOW LQ HOHFWULF VKRFN RU UH GR QRW H SRVH WKLV 79 VHW to rain or excessive moisture This TV must not be exposed to dripping or splashing water DQG REMHFWV OOHG ZLWK OLTXLG VXFK DV YDVHV PXVW QRW EH SODFHG RQ WRS RI RU DERYH WKH 79 1 3 3 Electro static discharge ESD Som...

Page 5: ... UHFHLYHU RQO WKH WHVW WXUHV VSHFL HG LQ WKLV VHUYLFH PDQXDO CAUTION R QRW FRQQHFW WKH WHVW WXUH JURXQG VWUDS WR DQ KHDW VLQN LQ WKLV UHFeiver 3 Do not spray chemicals on or near this receiver or any of its assemblies 4 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or compar...

Page 6: ... 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 components The following techniques should be used to help reduce the ncidence of component damage caused by static by static electricity 4 Use only an anti static type solder removal device So...

Page 7: ...ibed in the table below Note A note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure Warning A warning is used when there is danger of persona...

Page 8: ...lor Display 16 7M No of Preset Channels 1000 OSD Language English Color System PAL SECAM Audio System DK BG I M L L Audio Output Power Built in W 3W 2 Audio Output Power outer W No Total Power Input W 38W Voltage Range V Power Frequency Hz 50 60Hz Net Weight KG 3 8 Gross Weight KG 4 9 Net Dimension MM 528 38 350 Packaged Dimension MM 528 145 390 AC 100 240V 160 H 160 V ...

Page 9: ... 08 Service Manual Model No 3 Location of Controls and Components 3 1 Board Location No Description A Board Integration Mainboard 3 2 Main Board A Board 515C3212M21 B B LVDS WIRE 4031C226209 ...

Page 10: ...anel can display RQQHFWRU GH QLWLRQ Main board connector Keypad and remote connector J28 Pin number Signal name Description 1 LED_R LAMP RED 2 LED_G LAMP GREEN 3 4 IR REMOTE CONTROL 5 GND GND 6 5V POWER FOR REMOTE KEY1 KEY0 GND 7 8 9 10 NC STANDBY Speaker connector J26 Pin number Signal name Description 1 RSPK RSPK 2 RSPK RSPK 3 LSPK LSPK 4 LSPK LSPK ...

Page 11: ...3 3 LED Panel 10 Service Manual Model No CLAA215FA10 ...

Page 12: ...nnel 0 LVDS 13 RXE0 plus signal of even channel 0 LVDS 14 GND GND 15 RXE1 minus signal of even channel 1 LVDS 16 RXE1 plus signal of even channel 1 LVDS 17 GND GND 18 RXE2 minus signal of even channel 2 LVDS 19 RXE2 plus signal of even channel 2 LVDS 20 RXEC minus signal of even clock channel LVDS 21 RXEC plus signal of even clock channel LVDS 22 RXE3 minus signal of even channel 3 LVDS 23 RXE3 pl...

Page 13: ...UHDU FRYHU faces upward 5HPRYH WKH WKUHH VFUHZ IURP WKH UHDU FRYHU LQGLFDWHG ZLWK ż 7KHQ UHPRYH WKH SHGHVWDO 4 2Remove the Back Cover 5HPRYH WKH WKHVH VFUHZ LQGLFDWHG RQ JXUH DERYH E ż 7KHQ UHPRYH WKH EDFN FRYHU IURP WKH unit Service Manual Model No 12 4 1 Remove the Pedestal 4 3 Remove the adhesive tape ...

Page 14: ...4 4 Remove the Main board 5HPRYH WKH 0DLQ ERDUG Service Manual Model No 13 J28 J26 CN800 LVFRQQHFWHG WKH FRXSOHU J20 CN804 CN805 4 5 Remove the speaker Take out the speaker CN806 ...

Page 15: ...4 6 Remove the remote control take out the remote controlboard Service Manual Model No 14 ...

Page 16: ...l 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 To improve picture quality from an antenna in a poor signal area install a signal DPSOL HU If you need to split the antenna signal to connect two TVs install a two way splitter Service Manual Model No 15 ...

Page 17: ...sc player DVD camcorder video game console or stereo system etc YPbPr component video can support these video formats 480i 576i 480p 576p 720p Use an HDMI connection to view 1080i 1080p material Y Y W R W R TO AUDIO INPUTS VIDEO EQUIPMENT TO VIDEO INPUTS Y Y You can use the input and output terminals on the TV set as follows W R Audio G B R Component video HDMI Y Pb Pr R L VIDEO R L VIDEO AV OUT P...

Page 18: ... AV output SIDE AV Connections All the terminals are from left to right USB HDMI2 input HDMI1 input HEADPHONE output PC Audio input VGA input Note 1 When the HDMI1 input receives a DVI signal the matching audio signal is received by the PC Audio input 2 When the HDMI2 port receives a DVI signal the matching audio signal is received by the YPbPr AV Audio input Antenna socket Plug not supplied Outdo...

Page 19: ... 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 VGA and audio cable not supplied The above resolutions are the only ones guaranteed to be supported Other resolutions up to 1920 x 1080 may also be supported but this must be assessed by the user on a case by case basis This is also s...

Page 20: ... menu When the source device DVD player or Set Top Box supports DVI How To Connect 1 Connect the source device to HDMI port of this TV with a HDMI to DVI cable not supplied with this product 2 A separated audio connection is necessary 3 If the source device has an analog audio output connector connect the source device audio output to DVI Audio In port located on the PC port How To Use If the sour...

Page 21: ...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 Service Manual Model No 19 ...

Page 22: ... Use the attached power cord only Ŷ I WKH SRODUL HG FRUG GRHV QRW W LQWR D QRQ SRODUL HG RXWOHW GR QRW DWWHPSW WR OH RU FXW WKH EODGH W LV WKH XVHUCV UHVSRQVLELOLW WR KDYH DQ electrician replace the obsolete outlet Ŷ I RX FDXVH D VWDWLF GLVFKDUJH ZKHQ WRXFKLQJ WKH XQLW DQG WKH XQLW IDLOV WR IXQFWLRQ simply unplug the unit from the AC outlet and plug it back in The unit should return to normal oper...

Page 23: ...that you have selected 30 30 1 3 2 The remote control needs to be pointed directly within 30 of the sensor on the front of the TV for reliable operation There will be a 5 10 second delay between the power indicator LED changing state and the TV responding NB SOURCE Input selection MENU CH CH VOL VOL STANDBY Power ON Stand by select 4 1 Remote control sensor 2 Indicator LED BLUE POWER ON RED Stand ...

Page 24: ...e picture you are watching 23 Press to display and select the available video sources 24 To return to the previous menu or exit menu 25 To access the next or previous channels 26 27 DTV Mode RECALL Jumps to last channel viewed POWER TEXT SUBTITLE CURSOR OK EPG FAV VOL NUMERIC KEY AUDIO MUTE INFO FREEZE EXIT CH CH REC RECALL Press the Play Button in USB Mode to begin or continue Playback Press the ...

Page 25: ...e acquisition The indication appears top left To freeze the page To display or hide the concealed information games solutions The user can set four favourite pages to be directly linked to the four color keys While list mode is activated it is not possibility to use TOP or FLOF navigation with the colourkeys The favourite page numbers should be stored and restored to from nonvolatile memory for ea...

Page 26: ..._MOCLK TS_MOSTART TS_MOVAL PCM_D 7 0 PCM_A 14 0 PCM_IRQA_N PCM_CE_N PCM_IOWR_N PCM_IORD_N PCM_WE_N PCM_OE_N PCM_REG_N PCM_WAIT_N PCM_RESET PCM_CD_N Page 2 02_SYS_POWER POWERON OFF BKLON ADJ PWM LCDON Page 11 11_AUDIO HP_DET AMP Rout AMP Lout AUOUTR1 AUOUTL1 SC_AROUT CLASS_EN SC_ALOUT Page 9 09_MEMORT MIUA_DQS0 MIUA_DQS0B MIUA_DQS1 MIUA_DQS1B MIUA_DQM1 MIUA_DQM0 MIUA_DQ 0 15 MIUA_MCLK MIUA_MCLKZ MI...

Page 27: ...C135 0 1u C158 0 1u C158 0 1u C163 470uF 16V C163 470uF 16V C152 100uF 16V C152 100uF 16V C134 NC 0 1u C134 NC 0 1u C159 1nF C159 1nF R274 1K R274 1K C131 470uF 16V C131 470uF 16V C143 0 1u C143 0 1u C121 0 1u C121 0 1u R282 4 7K R282 4 7K C138 0 1u C138 0 1u C307 0 1u C307 0 1u C151 0 1uF C151 0 1uF C150 100uF 16V C150 100uF 16V C148 0 1u C148 0 1u R278 100K R278 100K C126 100uF 16V C126 100uF 16...

Page 28: ... 0R R308 0R R346 10K R346 10K C202 200pF C202 200pF R301 220R R301 220R C169 0 1uF C169 0 1uF R332 1K R332 1K C1103 220uF 16V C1103 220uF 16V C244 0 22uF C244 0 22uF R306 10K R306 10K R313 100R R313 100R R325 100K R325 100K Q33 2N3904 Q33 2N3904 3 1 2 Q31 2N3904 Q31 2N3904 3 1 2 U19 TPA1517 U19 TPA1517 IN1 1 SGND 2 SVRR 3 OUT1 4 PGND 5 OUT2 6 VCC 7 M SB 8 IN2 9 GND HS 10 GND HS 11 GND HS 12 GND HS...

Page 29: ...18 270K 0603 R18 270K 0603 R901 47K R901 47K C1061 0 1uF X7R C1061 0 1uF X7R R902 4 7K R902 4 7K R69 1R 0805 R69 1R 0805 C23 2 2uF C23 2 2uF R849 NC R849 NC R5 NC R5 NC R897 1R 1206 R897 1R 1206 C1058 680pF C1058 680pF U3 NC AP3608E U3 NC AP3608E CH2 2 CH1 1 CH3 3 CH5 7 CH4 4 PGND1 5 PGND2 6 CH6 8 CH7 9 CH8 10 PWM 11 NC 12 FBX 13 ISET 14 FB 15 SDB 16 SDBX 17 AGND 18 VCC 19 EN 20 F800 F800 C32 103 ...

Page 30: ...RX4 NC V800AA RX9 NC V800AA RX9 NC V800AA R38 33R R38 33R R50 75R R50 75R L58 FB_11_OHM_500MA L58 FB_11_OHM_500MA CN14 YPbPr JACK 3 CN14 YPbPr JACK 3 1 1 2 2 3 3 4 4 5 5 7 7 6 6 8 8 R48 330R R48 330R C54 100pF C54 100pF R34 10K R34 10K R30 10K R30 10K C41 47n C41 47n J5 PC Audio Input J5 PC Audio Input 1 2 3 4 5 6 7 8 Q9 2N3904 Q9 2N3904 3 2 1 RX7 NC V800AA RX7 NC V800AA C50 100pF C50 100pF C51 1u...

Page 31: ...E 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 C76 100pF C76 100pF R100 10K R100 10K C74 1uF C74 1uF C1083 47nF C1083 47nF RX15 NC V800AA RX15 NC V800AA L66 FB_11_OHM_500MA L66 FB_11_OHM_500MA RX19 NC V800AARX19 NC V800AA R98 33R R98 33R R66 33R R66 33R RX18 NC V800AARX18 NC V800AA R78 NC R78 NC C65 1nF C65 1nF C63 47nF C63 47nF R2303 NC R2303 NC R107 0R R107 0R R71 75R R71 75R L69 FB_11_OHM_500MA L6...

Page 32: ... APPRD SHEET 5 OF 12 VER 1 0 R113 22K R113 22K D2 BAV70L D2 BAV70L 1 2 3 R114 10K R114 10K J15 HDMI Side J15 HDMI Side DATA2 1 DATA2 SHIELD 2 DATA2 3 DATA1 4 DATA1 SHIELD 5 DAT1A 6 DATA0 7 DATA0 SHIELD 8 DATA0 9 CLK 10 CLK SHIELD 11 CLK 12 CEC 13 NC 14 SCL 15 SDA 16 DDC CEC GND 17 5V POWER 18 HOT PLUG 19 20 20 21 21 22 22 23 23 RX39 NC V800AA RX39 NC V800AA R116 22K R116 22K Q11 3904 Q11 3904 D3 B...

Page 33: ...M_4A C1094 0 1uF C1094 0 1uF C1086 0 1uF C1086 0 1uF R2304 10K R2304 10K C1091 0 1uF C 1091 0 1uF Q15 3906 Q15 3906 1 3 2 C114 0 1uF C114 0 1uF R2305 150K R2305 150K C104 33pF C104 33pF R127 10K R127 10K R2306 20K R2306 20K R128 10K R128 10K C115 0 1uF C115 0 1uF C1095 0 1uF C1095 0 1uF C1084 0 1uF C1084 0 1uF Q14 100R Q14 100R SAW U6 D8602F5 K6966M D3953N SAW U6 D8602F5 K6966M D3953N 2 ING 4 OUT1...

Page 34: ... 5VUSB 5VA VCC PCMCIA 5V 5VUSB CARD DETECT PCMCIA Connector USB Interface PWR CTRL 5V card SHEN ZHEN MTC MULTIMEDIA CO LTD DESIGN YANXUEWU MODEL MSDV3205 L2 TITLE PCMCIA CHECKED PART NO DWG NO APPRD SHEET 7 OF 12 VER 1 0 USB Power J16 PCMCIA_CNT J16 PCMCIA_CNT GND 1 D3 2 D4 3 D5 4 D6 5 D7 6 CE1 7 A10 8 OE 9 A11 10 A9 11 A8 12 A13 13 A14 14 WE 15 READY 16 VCC 17 VPP1 18 MIVAL 19 MICLK 20 A12 21 A7 ...

Page 35: ..._PCM_D 5 V15 PAD_PCM_D 6 V13 PAD_PCM_D 7 V18 PAD_PCM_A 0 R19 PAD_PCM_A 1 P19 PAD_PCM_A 2 N21 PAD_PCM_A 3 N19 PAD_PCM_A 4 V20 PAD_PCM_A 5 U20 PAD_PCM_A 6 T20 PAD_PCM_A 12 R20 PAD_PCM_A 8 P17 PAD_PCM_A 9 N18 PAD_PCM_A 11 V16 PAD_PCM_A 13 R17 PAD_PCM_A 10 U17 PAD_PCM_A 7 T19 PAD_TS1_CLK Y20 PAD_TS1_SYNC R16 PAD_TS1_VLD W20 PAD_TS1_D 0 P18 PAD_TS1_D 1 R18 PAD_TS1_D 2 T18 PAD_TS1_D 3 W19 PAD_TS1_D 4 Y2...

Page 36: ...3 1 8 6 4 2 RP16 22RX4 7 5 3 1 8 6 4 2 RP16 22RX4 R267 10k R267 10k 7 5 3 1 8 6 4 2 RP20 75RX4 7 5 3 1 8 6 4 2 RP20 75RX4 7 5 3 1 8 6 4 2 RP22 22RX4 7 5 3 1 8 6 4 2 RP22 22RX4 R268 10k R268 10k 7 5 3 1 8 6 4 2 RP21 22RX4 7 5 3 1 8 6 4 2 RP21 22RX4 C119 1n C119 1n 7 5 3 1 8 6 4 2 RP25 75RX4 7 5 3 1 8 6 4 2 RP25 75RX4 7 5 3 1 8 6 4 2 RP27 75RX4 7 5 3 1 8 6 4 2 RP27 75RX4 7 5 3 1 8 6 4 2 RP24 22RX4 7...

Page 37: ...ion wire Blacklight Service Manual Model No 7 2 Wiring Connection Diagram NO Name 1 2 3 4 5 Connection Wire For Keyboard and Remote Connection Wire For Speaker LVDS Wire Connection Wire Power Wire 5 2 3 4 1 34 ...

Page 38: ...oose If you choose Shop Mode it will enter HDMI1 source automatically and you wil press Exit key to exit POP menu 1 CHANNEL MENU The first item of the MENU is channel menu for TV or DTV source only You can search channels and edit programs here 1 Auto tuning Search all the channels automatically you can select ATV and DTV ATV Manual Tuning Programme Edit Signal Information CHANNEL Auto Tuning DTV ...

Page 39: ...ast 82 Brightness 50 Color 50 Sharpness 50 Tint 50 Color Temperature Medium Red 40 Green 31 Blue 50 MENU Use the Arrow Buttons to select the channel you wish to move Then press the Yellow Button to select Move function Once active enter the number button and then press OK to confirm NOTE Press teletext red button to storage to channels after manual tuning 4 Program edit You can Delete Rename Move ...

Page 40: ...ormation PROGRAMME GUIDE TIME Schedule Record INFO Remind OK INDEX 1 Use to choose the programs Press INFO key you can display the highlight program s information INFO 2 Press the teletext yellow key It can list all the reminder schedule press to choose the list press red key to delete the schedule list Schedule DELETE Schedule List 04 55 28th Apr Delete Time Date Programme Title Channel Name NOTE...

Page 41: ...check the term speed If it is HD support that means the speed of USB device is available for time shift and record If not please format the device to make sure the device available The default Free Record Limit is 6 hour if the space on the disk is big enough If the space is not big enough the record time should be shorter depends on the room on the device During the check PVR File System checking...

Page 42: ...lug USB device Formatting please wait Format disk As playing the DTV source choose the channel and click record the record frame will pop up Click record again the record frame will disappear and the REC icon still on the left top It will disappear until you click stop The program recorded on the USB will be saved in the folder _MSTPVR on the device 1 The USB storage size can be between 128MB and ...

Page 43: ...er or remove the USB device during formatting During formatting a speed test will be done on the USB device If it fails it means the USB device may not support the Time Shift function Record a paused DTV program to USB storage device 1 While in the DTV input source insert USB storage device to the USB port on the side of your TV 2 Press PAUSE 33 to start Time Shift function The TV program paused T...

Page 44: ...es not meet the minimum requirements 3 Do Not remove USB disk or switch off the power during Time Shift operations It will abort once the signal is lost 4 Do Not remove the signal source during Time Shift operations 5 Do Not quickly and repeatedly change operations between PLAY PAUSE FWD REV 6 Video may become pixelated when Video bit rate is too low 7 Not all USB devices are compatible The USB ha...

Page 45: ...frame will pop up Press the button to play the media file in full screen When the media file photo music Movie or text type is playing press the OK or Info button can display the control bar Press to select the function icon press OK button to confirm the function Press or EXIT button to exit the control bar NOTE You can adjust the audio track or program in the Info menu while Playing the video fi...

Page 46: ...nce of each signal source 4 SSC to adjust the spectrum for passing the EMC test 5 special set 1 2hour off for Aging test 2 WDT watch dog 3 white pattern set pure color output for the panel used at the checking and aging test for panel 4 reset 5 set the recorder 6 set power on screen display 6 QMAP adjust adjust color quality 7 PEQ set sound EQ 8 sw information to check the sofeware information 9 U...

Page 47: ... update You should reset TV after update Note When Upgrade on the process please don t Power Off Haier MSD308 F W upgrade with USB SOP Step 1 Ready for F W Upgrade 1 1 Prepare a USB memory RS WKH VRIWZDUH OH PHUJ ELQ IURP RXU FRPSXWHU WR WKH 86 PHPRU DQG UHPRYH it from computer s USB port Step 2 F W Upgrade 8 2 How to update software 2 1 AC ON ...

Page 48: ...hannel 6 Start Menu Display 7 Input Source Change 8 Save to USB 9 Loaking 10 Volume Default Hotel mode switch Panel key lock Hotel mode can adjust the maximum volume Hotel mode locking TV signal source Hotel mode locking program channels Hotel Mode menu is displayed Hotel mode is to display the Source U disk data will be cloned into the machine TV related equipment will be copied to the system U d...

Page 49: ...Service Manual Model No 9 Trouble shooting 9 1 Simple check 46 ...

Page 50: ...20 No Replace the Q1 Yes Check if there is 26V at C931 Yes No Check if U3 Pin11 3 3V Pin20 5V Pin12 5V U5 Pin2 0 72V Pin3 5V Pin4 12V is normal Change LVDS wire No Replace U3 or U5 Check if Q103 D9 R700 is working Yes Replace Q103 D9 R700 No Service Manual Model No 9 2 Main board failure check 47 ...

Page 51: ...e Change Mainboard Still having problems Check if there is sound input signal No Check the input source Yes No Verify if U19 has the right power in Pin 7 Check if there is output at Pin1 Pin7 of U25 Change U19 Yes Check if there is signal at C191 and C192 No check the signal input circuit of C191 C192 Yes Check if there is input at Pin1 Pin9 of U19 Yes Change U25 No Check the speakers 48 ...

Page 52: ...e voltage pressure of J7 Pin2 is high voltage pressure More than 3V Yes Change U8 No sound No picture Change Mainboard No Yes Check if there is voltage pressure in the pad of the L806 12V L807 5V CHANGE Q810 No 49 ...

Page 53: ... socket Check if there is voltage pressure in J3 12V J8 5Vstb Replace Remote Control Board Yes Replace D806 or D811 Still having problems Change Mainboard Chcek if L80 1 32V U14Pin2 1 8V U11Pin2 3 3V U12Pin2 3 3V U13Pin2 2 5V U15Pin2 8V is working No Chang U8 Yes Chang U16 OR U11 OR U12 OR U13 OR U14 OR U15 No 50 ...

Page 54: ...is correct Poor sound Change sound system No Update the software and make the reboot or change the Mainboard Still having problems For ease of use recommend that customer format the picture and sound settings in the automatic option 51 ...

Page 55: ... system Refer to relative instructions in the Manual for color adjust No No Yes Yes Check out of picture and sound system of this channel Change the channel to the right sound system PAL M N NTSC M No color for some channel program black and white Still having problems Updata the software and make the reboot or change the maiboard 52 ...

Page 56: ...Pin2 in J7 Check J3 voltage of 12 and J8 of 5 No No Yes Yes Replace U8 Replace U8 How to know whether the Power board is broken Still having problems Check if Main board LVDS wire Panel are in good condition No Reconnect the power cord with the outlet or Power board Yes No Check if the break in the power circuit Replace Q806 or Q809 No 53 ...

Page 57: ...d ecode the interfer ence check if the pins of CI card is wrongly conne cted change CI card Check if the power su pply of CI is normal or L93 is burnt Yes Replace L93 Yes No Still having problems change the maiboard 54 ...

Page 58: ... U9 has the right software and work well 5 Verify if the Y1 Crystal has the right frequency Panel not work 1 check if the voltage input and output of boost IC is working normally 2 Verify if the Mainboard output the right On Off signal to power board 3 Verify if the Mainboard output the LVDS singal to panel T con board 4 Verify if the software is the right version of this model 5 Change the LVDS w...

Page 59: ...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 voltage is high pressure 4 check if the power supply have 12V 5V output Check if Main board LVDS wire Panel are in good condition 56 ...

Page 60: ...or cracking Dim or L D TCP Sunken TCP lead cracking ACF bonding short Awful environment and something electric enter into LCD Mis align between TCP and Panel Panel failure TCP failure V Dim Vertal gray line V L D Vertical color line light or dark forever H B D Horizontal bar H Dim Horizontal gary line H L D H o r i z o n t a l line light or dark forever ...

Page 61: ...er Bubble Bladder in Polarizer Bladder between Polarizer and top glass Polarizer Scratch Polarizer Scratch Tine or rigidity arose F M i n s i d e Polarizer Eyewinker inside Polarizer Eyewinker inside Polarizer Circuit Abnormal Display Abnormal Display 1 Chip lose action 2 IC ahort or jointiog bad 3 Pannel and vsc connect bad Flashing B r i g h t a n d d a r k display alternately 58 ...

Page 62: ...display Maybe caused by surge current and EDS Black Screen B L normal only Black screen display FIIcker Crosstalk LCD Vcom imbalance Abnormal Color Only color abormal Capacitance improper bring crosstalk inside LCD pannel Abnormal Color Only color abnormal 1 Chip lose action 2 I C s h o r t o r jointion bad 3 Pannel and vsc connect bad ...

Page 63: ...ss between wire and electrode B L dark B L brightness darker than normal Connect badnessShort between wire and electrode B L wire damaged B L wire damaged Operation abnormal or systemic noise 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 inB L white balck Rotundi...

Page 64: ...ription Phenomena Failure cause Mechanlcal or B L 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 Mount hole Lack screw or screw damage Lack screw Screw damage ...

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AWA MHDV2262-04, Service Manual

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