Text preview for : Tatung V32ELBB-EL3210 (SM per 24-03-05).pdf part of Easy Living EL3210 Service manual for chassis Tatung V32ECBB/V32ELBB/V32EMBB, fitted in EL3210
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Service Manual
V32ECBB/V32ELBB/V32EMBB
LCD Multi-Media Display
(PAL/SECAM system)
Table of Contents
1. Safety and Precautions......................................................................1 2. Specifications..................................................................................3 2.1 Specification for V32ECBB.............................................................3 2.2 Specification for V32ELBB.............................................................4 2.3 Specification for V32EMBB............................................................5 2.4 PC I/P Preset Timing Table............................................................6 3. Connection & Applications....................................................................7 4. Controls Location...............................................................................9 5. Remote Control..................................................................................11 6. Disassembly Instructions......................................................................14 7. Block Diagram...................................................................................18 8. Troubleshooting.................................................................................19 8.1 Symptom Codes (for Call center use).................................................19 8.2 Flow Chart (for Repair center use)....................................................23 9. Electronic Circuit Description................................................................25 10. Circuit Diagram................................................................................30 10.1 Main Board.................................................................................30 10.2 Key, LED&IR Board ....................................................................39 10.3 Tuner & Video Board....................................................................40 10.4 Connecting Board........................................................................41 10.5 Power Board...............................................................................42 11. PCB Layout.......................................................................................43 11.1 Main Board PCB.........................................................................43 11.2 Key, LED&IR, Connecting Board PCB.............................................45 11.3 Tuner & Video Board PCB............................................................46 11.4 Connecting Board PCB..................................................................47 11.5 Power Board PCB........................................................................48 12. Spare Parts List..................................................................................49 13. Mechanical Disassembly........................................................................51 14. Firmware Program Update Steps............................................................53
1. Safety and Precautions
CAUTION
* The service of this LCD TV must be carried out by qualified persons only. * Do not change any module unless the set is switched off. CLEANINGAlways disconnect unit from mains supply before attempting to clean it. Use soft cloth moistened with soapy water, wipe gently. Do not use solvents of abrasive materials.
SOME DO'S AND DONT'S ON THE SAFE USE OF EQUIPMENT This equipment has been designed and manufactured to meet European safety standards but like any electrical equipment, care must be taken if you are to obtain the best results and safety is to be assured.
Do read the operating instructions before you attempt to use the equipment. Do ensure that all electrical connections (Including the mains plug, extension leads and interconnections between pieces of equipment) are properly made in accordance with the manufacturer's instructions. Switch off and withdraw the mains plug when making or changing connections. Do use only the Power Cord and Power Supply (option) provided. Do consult your dealer if you are ever in doubt of the installation, operating, or safety of your equipment. Don't exert pressure on the LCD TV . This could break the panel . Don't continue to operate the equipment if you are in any doubt about it working normally, or if it is damaged in any way. Switch off, withdraw the mains plug and consult your dealer. Don't remove any fixed covers as this may expose dangerous voltages. Don't leave equipment switched on when it is unattended unless it is specifically stated that it is designed for unattended operation or has a standby mode. Switch off using the switch on the equipment and make sure that everyone knows how to do this. Special arrangements may need to be made for infirm or handicapped people.
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Don't listen to headphones at high volume, as such use can permanently damage your hearing. Don't obstruct the ventilation of the equipment, for example, with curtains or soft furnishings. Overheating will cause damage and shorten the life of the equipment. Don't allow electrical equipment to be exposed to rain or moisture.
Above all Never let anyone push anything into holes, slots or any other opening as this could result in a fatal electric shock. Never guess or take chances with electrical equipment of any kind. It is better to be safe than sorry! WARNINGTO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. DANGEROUS HIGH VOLTAGES ARE PRESENT INSIDE THE ENCLOSURE. DO NOT OPEN THE CABINET. REFER SERVICING TO QUALIFIED PERSONNEL ONLY.
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2. Specifications
2.1 V32ECBB
ITEMS Screen Size Aspect Ratio Resolution Display Area (opening) H x V Pixel Pitch Display colors Contrast Ratio Brightness (center) Viewing Angle (CR>10) Response Time (GTG) Broadcasting System Receiving Channel Sound System Data Broadcasting Video Color System AV1 (scart) AV2 (composite) AV3 (component) Digital Input PC Input (analog) HDCP / DVI Signal Connection PnP compatibility Scanning Frequency HDTV Ready (via D-sub 15 pin) Audio 1 Audio Input Audio 2 Audio 3 Audio 4 SCART 1 SCART 2 Composite (RCA jack) Speaker ( build-in) Line Out OSD Language Function Keys Feature Video Performance Audio Performance Other Control Power Dimension Weight (net) Power Supply Power Consumption WxHxD Without Accessories 31.51" SPECIFICATION TFT-LCD Panel (CPT) 169 1366 x 768 (WXGA) 697.68 mm x 392.25 mm 0.511 mm x 0.511 mm 16,777,216 colors 800 : 1 (typ.) 550 cd / m2 (typ.) 176o Hor. / 176o Ver. 10 ms (typ.)
Panel
(typ.)
TV Function
PAL / SECAM B / G, D / K, I and L / L' (Multi-Europe) NICAM / A2 (IGR) Teletext 255 pages (FLOF /TOP) , Auto Program Searching (APS) PAL / SECAM / NTSC 21-pin Scart (RGB / CVBS / SVHS) x2 Composite (RCA jack) x1 x1 S-Video Y Pb Pr (720P / 1080i , HDTV ready) x 1 HDCP 1.1 / DVI 1.0 x1 x1 / fV = 56 ~ 75Hz x2 x1 x1 x1 x1 x1 x1 x1 @ THD < 1% )
Video Input
D-Sub 15 pin DDC / 2B fH = 31.5 ~ 60KHz 720p, 1080i Scart (build-in) Composite S - Video Component PC
Video Output Audio Output
TV TV / CVBS (scart 1) TV 10W + 10W (rms) Left / Right / Subwoofer
@ THD < 10% ( 7W + 7W
English, French , German , Spanish , Italian , Finnish , Swedish, Dutch, Demark, Norway Power , Source , Menu , Up/Down(Channel) , +/-(Volume) , Aspect . Picture in Picture (PIP) , Comb-filter , 3D De-interlace , Canal Plus , Tele text , Aspect Ratio Control (ARC) , Auto Picture Control(APC) , Video Enhance , Noise Reduction , Picture by Picture (PBP) . Equalizer, Subwoofer, Auto Volume Control (AVC), Sleep Timer, Auto Power Off. AC 100V ~ 240V , 50 / 60Hz < 180 W 964.8mm * 582.4mm * 279.8mm 22.2kg
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2.2 V32ELBB
ITEMS Screen Size Aspect Ratio Resolution Display Area (opening) H x V Panel Pixel Pitch Display colors Contrast Ratio Brightness (center) Viewing Angle (CR>10) Response Time (BTW) Broadcasting System TV Function Receiving Channel Sound System Data Broadcasting Video Color System AV1 (scart) Video Input AV2 (composite) AV3 (component) Digital Input PC Input (analog) HDCP / DVI Signal Connection PnP compatibility Scanning Frequency HDTV Ready (via D-sub 15 pin) Audio 1 Audio Input Audio 2 Audio 3 Audio 4 Video Output Audio Output SCART 1 SCART 2 Composite (RCA jack) Speaker ( build-in) Line Out OSD Language Function Keys Feature Video Performance Audio Performance Other Control Power Dimension Weight (net) Power Supply Power Consumption WxHxD Without Accessories 169 1366 x 768 (WXGA) 697.68 mm x 392.25 mm 0.511 mm x 0.511 mm 16,777,216 colors 550 : 1 500 cd / m 176o Hor. / 16 ms (typ.) PAL / SECAM B / G, D / K, I and L / L' (Multi-Europe) NICAM / A2 (IGR) Teletext 255 pages (FLOF /TOP) , Auto Program Searching (APS) PAL / SECAM / NTSC 21-pin Scart (RGB / CVBS / SVHS) Composite (RCA jack) S-Video x2 x1 x1 (typ.) (typ.) 176o Ver. (typ.) SPECIFICATION 31.51" TFT-LCD Panel (LG)
Y Pb Pr (720P / 1080i , HDTV ready) x 1 HDCP 1.1 / D-Sub 15 pin DDC / 2B fH = 31.5 ~ 60KHz 720p, 1080i Scart (build-in) Composite S - Video Component PC TV TV / CVBS (scart 1) TV 10W + 10W (rms) Left / Right / Subwoofer English, French , German , Spanish , Italian , Finnish , Swedish, Dutch, Demark, Norway Power, Source, Menu, Up/Down (Channel), +/-(Volume), Aspect. Picture in Picture (PIP) , Comb-filter , 3D De-interlace , Canal Plus , Tele text , Aspect Ratio Control (ARC) , Auto Picture Control(APC) , Video Enhance , Noise Reduction , Picture by Picture (PBP) . Equalizer, Subwoofer, Auto Volume Control (AVC), Sleep Timer, Auto Power Off. AC 100V ~ 240V , 50 / 60Hz < 180 W 964.8mm * 582.4mm * 279.8mm 22.2kg x2 x1 x1 x1 x1 x1 x1 x1 @ THD < 10% ( 7W + 7W @ THD < 1% ) / fV = 56 ~ 75Hz DVI 1.0 x1 x1
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2.3 V32EMBB
ITEMS
Screen Size Aspect Ratio Resolution Display Area (opening) H x V Pixel Pitch(Sub Pixel) Display colors Contrast Ratio Brightness (center) Viewing Angle (CR>20) Response Time (GTG) Broadcasting System Receiving Channel Sound System Data Broadcasting Video Color System AV1 (scart) AV2 (composite) AV3 (component) Digital Input PC Input (analog) HDCP / DVI Signal Connection PnP compatibility Scanning Frequency
HDTV Ready (via D-sub 15 pin)
SPECIFICATION
32.02" TFT-LCD Panel (CMO) 169 1366 x 768 (WXGA) 714.96 mm x 404.6 mm 0.519 mm x 0.519 mm 16,777,216 colors 1000 : 1 (typ.) 550 cd / m2 (typ.) 176o Hor. / 176o Ver. (typ.) 8 ms (typ.) PAL / SECAM B / G, D / K, I and L / L' (Multi-Europe) NICAM / A2 (IGR)
Teletext 255 pages (FLOF /TOP), Auto Program Searching (APS)
Panel
TV Function
Video Input
PAL / SECAM / NTSC 21-pin Scart (RGB / CVBS / SVHS) Composite (RCA jack) S-Video Y Pb Pr (720P / 1080i , HDTV ready) HDCP 1.1 / DVI 1.0 x1
x2 x1 x1 x1
Audio 1 Audio Input Audio 2 Audio 3 Audio 4 SCART 1 SCART 2 Composite (RCA jack) Speaker ( build-in) Line Out OSD Language Function Keys Feature Video Performance Audio Performance Other Control Power Supply Power Consumption WxHxD Without Accessories
Video Output Audio Output
D-Sub 15 pin x1 DDC / 2B fH = 31.5 ~ 60KHz / fV = 56 ~ 75Hz 720p, 1080i Scart (build-in) x2 Composite x1 S - Video x1 Component x1 x1 PC TV x1 TV / CVBS (scart 1) x1 x1 TV 10W + 10W (rms) @THD < 10% ( 7W + 7W @ THD < 1% ) Left / Right / Subwoofer English, French , German , Spanish , Italian , Finnish , Swedish, Dutch, Demark, Norway
Power, Source, Menu, Up/Down (Channel), +/-(Volume), Aspect.
Power Dimension Weight (net)
Picture in Picture (PIP), Comb-filter, 3D De-interlace, Canal Plus, Tele text, Aspect Ratio Control (ARC), Auto Picture Control (APC), Video Enhance, Noise Reduction, Picture-by-Picture (PBP). Equalizer, Subwoofer, Auto Volume Control (AVC), Sleep Timer, Auto Power Off. AC 100V ~ 240V , 50 / 60Hz < 180 W 964.8mm * 582.4mm * 279.8mm 22.2kg
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2.4 PC I/P Preset Timing Table:
Analog Input N o. 1 2 Mode Name VGA VGA H-Resoluti H. V. Pixel on H.Freq V.Freq Polarit Polarit CLK V-Resoluti . (KHz) . (Hz) y y (MHz) on 640 * 480 31.469 59.940 640 * 480 37.500 75.000 + + + + + + + + 25.175 31.500 28.325 29.750 40.000 49.500 65.000 75.000 80.150 80
3 US TEXT 720 * 400 31.472 70.100 4 5 6 7 8 9 STB SVGA SVGA XGA XGA 768 * 576 31.250 50.000 800 * 600 37.879 60.300 800 * 600 46.875 75.000 1024 * 768 48.363 60.000 1024 * 768 56.476 70.000
WSGA 1280 * 768 47.708 60.000
10 WXGA 1366 * 768 48.54 59.93
* The resolution and the frequencies are displayed on the screen may not exactly same as this list.
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3. Connection Applications
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NOTE:
Audio out L/R & Subwoofer out The level of audio output cannot be changed using the volume , treble , and bass controls on your TV . These connectors should be used with an external audio amplifier that can be used to control the volume.
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4. Controls Location
Main Power Switch
Before operating the LCD display or remote control, users must press MAIN POWER switch to ON. The MAIN POWER switch is located at the bottom-left back of the LCD display (near by Power Inlet).
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Function Key
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5. Remote Control
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Summary of Control Buttons
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PIP Control
ON / OFF PIP Source Press to watch one of the video sources on Sub-display, whilst in PC mode. Press again to turn off the Sub-display. Press to select the PIP window input source as : Press button : TV Video S-Video SCART 1 SCART 2 SCART 2 S. To make the PIP window double, large, small and tiny. Press to move the PIP window to: Top Left Top Right Bottom Right Bottom Left Repeat.
SIZE POSITION
Other Function
Audio SWAP ARC Exchange sound between main and sub source Set the display aspect: FullNormal16:9 ZoomPanoramicAuto. For PC mode, only Regular and Full options are available. Note: not available for Panoramic under 1080i of CV mode. Select the picture brightness & contrast to "Standard", "Movie", "Bright", ,,Manual" and "clear". Press to choose stereo, bilingqual, and monaural broadcasts. Press to select a preset time interval for automatic power off. Press "Sub-Page/Time" to display the digital clock in TV mode.
APC SOUND SLEEP SUB-PAGE/TIME
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6. Disassembly Instructions
Face down the LCD-TV:
Face down the LCD-TV on a smooth plane with a soft material to protect the panel faceplate.
A. Remove it and pull out it along the slot. B. Remove the plastic cover from the back cover.
C. Remove 4 screws from the Neck and then takes neck apart from the cover. D. Remove 2 screws and pull out it along the slot.
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E. Remove 10 screws from the back cover. F. Remove 1 screw from the back cover and then take back cover apart from the LCD TV.
G. Remove 3 screws from Power box. H. Remove 4 screws from Main PCB Shield and Visa bracket apart from Panel Bracket.
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I. Remove 8 screws from the Main PCB and then take Main PCB apart from the Main Bracket.
J. Remove 6 screws from the Panel Bracket.
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K. Take Panel Bracket apart from the Front Cover.
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7. Block Diagram
ANT
UT01
Tuner FQ1216MK3
SIF
Component Audio Composite Audio Scart Audio VGA/DVI Audio I022
I804
I807
Audio Processor MSP3410G
Audio Amp.
TDA8925
10W + 10W Speaker Subwoofer out Audio out
I802 SCART 1
Teletext Decoder SAA5361
I017
SCART 2
Video
S-Video Component
Video Switch TDA8851
Video Decoder SAA7117
Scaler
MST5151
Panel
I018
DVI VGA
DDR EM6A9320
I003
IR Pad
Remote Control
Key Pad E2PROM
Power Supply
+ 5V + 12V + 24V
Micro Controller
( W78E65) Regulator Regulator 3.3V 2.5V 1.8V 9.0V
INVERTER
AC 100~240V 50/60Hz
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8. Troubleshooting
8.1 Symptom Codes : ( for Call Center use )
COD E NP1 SYMPTOM No Picture and No Sound in TV mode. COUNTERMEASURES · Make sure the Power cord and Aerial Cable are properly connected . · Make sure the batteries in remote control are not flat. · Press the POWER button to switch the TV on. · Switch to TV source by pressing "TV" button. · Run "Automatic Search " by operating the remote control. Check the connection between the optional video equipment and the TV. Press SCART , Video/S-V or COMPONENT button on the remote control to select the right video equipment. Check if the "SLEEP" timer is activated . Press the POWER button to turn on the TV once again. Check Aerial Cable are correct connected. Press P+ or P- to change channel. Press Power button for power off and on if necessary.
No picture and no Sound
NP2
No Picture and No Sound in video mode.
· · · · · · · ·
NP3
TV is automatically turned off. Screen appearNO SIGNALin TV mode, it is automatically turned off after 10 mins. Screen appearNO SIGNALin Video mode, it is automatically turned off after 10 mins. Double Images / Ghosts
NP4
NP5
PP1
PP2 Poor Picture
Snowy picture and noisy Sound
PP3 PP4
Distorted picture and noisy sound Dotted Lines / Stripes in the picture.
Check Video Cable are correct connected, then play video device and make sure it is normal. · Press Source button (AV/SV/CV) for change Video source. · Press Power button for power off and on if necessary. If the TV suffers interference from signals reflecting from mountains or buildings , double-pictures or Ghosts will occur. · Adjust the aerial's location and direction · Replace it with one with better directionality. · Turn off or disconnect the booster if it is in use , as the booster may be inappropriate. If snow totally blocks out the picture , there may be a problem with the Aerial or Aerial Cable . · Have the TV and aerial been connected properly ? Has the aerial cable been damaged ? · Is the aerial pointing in the right direction ? · Is the aerial itself faulty ? · Try using a booster , as signal transmission may be low. · Turn off or disconnected the booster if it is in use , as broadcast signals may be too strong. If the TV or aerial suffers interference from other equipment , stripes or noise may appear in the picture. · Keep the TV away from noise sources such as personal computer , amplifier , cars, motorcycles or hair-dryers. · If the aerial suffers interference from a radio tower or high-voltage wire , contact the local dealer.
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CODE PP5 Poor Picture
SYMPTOM Stripe noise . · · · ·
COUNTERMEASURES Check the coaxial cable connected with the TV is not oxidized Do not use 300 ohm twin lead cables as interference may occur It is recommended to use a 75 ohm coaxial cable (not supplied) to get premium quality picture. Keep the aerial cable away from other connecting cables. Adjust the picture settings -- APC, Brightness, Contrast, Saturation , Color Temp. Press "RESET " button on remote control . Make sure the headphone is not connected. Check audio connections between Equipment & LCD-TV. Press MUTE or VOL + to cancel the muting.
PP6
No color, too light or too dark Good picture, no sound
· · · · ·
NS1
NS2
Noisy noise
·
No Sound or Noisy Sound
NS3
No sound in TV mode
Make sure that the aerial connected is 75 ohm coaxial cable (not supplied) , not 300 ohm twin lead cables . · Keep the aerial cable away from other connecting cables. · Press SOUND to select "Mono" which will reduce the noise. · Adjust BASS or TREBLE properly in OSD. If the Country setting for the TV is incorrect , it may prevent the sound from being issued · Select the Country where you are located in OSD Menu. · If the country is not listed in OSD , select "Other Country" . · · If the sound of "all the channels" is noisy , run A.P.S. again by selecting Automatic Search in OSD. If the sound of "some channels" is noisy or no sound , select Manual Search and select an appropriate TV system in OSD such as B/G , D/K , I , L/L' ; then , store it.
NS4
Good picture, but noisy sound or no sound in TV mode.
PC1
PC display is Not Full Screen
PC2
Horizontal Noise or Color pattern is not uniform
( If the sound system setting for a TV channel is incorrect , it may prevent the sound from being issued .) Select Auto Image Adjust in OSD menu to optimize the image . If executing Auto Image Adjust still can not achieve full screen display, adjust V.Position and H.Position in PC mode Select Auto Image Adjust in OSD menu to optimize the image . If still no good , adjust H. Phase in OSD menu
PC
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CODE PC3
SYMPTOM "Out of Range" message
COUNTERMEASURES Maximum PC resolution supported is 1360x768 , so the screen will appear "Out of range" at higher resolution. Note: the panel maximum resolution is 1366 x 768, perhaps can't suit for all of PC graphic card, due to 1366 x 768 resolution was not a standard timing. Reduce the resolution to 1360x 768 from PC. Make sure PC audio Input is well connected. If Main-Display is PC and Sub-display is Component, resolution of the PC should be reduced to 800 x 600 or lower; then, the PIP will work well. Press any key on keyboard or move the mouse to activate the PC , because the PC may go to power saving status. Check if the D-sub or DVIconnector (Cable) is disconnected or loose. Make sure the batteries in remote control are not flat Check the polarity of the batteries Use the remote control in the front of the TV or from less than seven meters away. make sure the Remote Sensor Window is not under strong lighting. Press TV button to switch to TV mode. Make sure the TV is not in Teletext mode. Press RESET button on remote control . Unplug and then plug the Power Cord of the TV from the AC outlet (or the Adapter from the TV). If above issues cannot be solved, unplug the power cord for 2~3 seconds. Then, check it is back to the normal situation. Implementing initial preset value might be necessary to enter factory setting mode. The steps are as bellow: Hold Menu key on the right/button on the top of the display. Press Power button on remote control until the LED light is on. While still holding Menu key, the end of implement would show "INITIAL EPROM" that appears on screen after 3 seconds. Then, release the holding.
PC
PC4 PC5
No Sound "Not Available" message on PIP After "No Signal " has appeared on PC mode for a while, the view disappears and the " LED Indicator" turns from Green to "Amber". Remote Control does not work
PC6
RC1 Remote Control
RC2 PH1
Picture Halt / Abnormal
Can not change channels with the remote control Picture suddenly Stops Responding or abnormal.
NT1
Issues cannot be solved
Note
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8.2 Flow Chart:
(1) Power fair
No picture Appear
Replace I012 Replug Restart and check sources are connected correctly. 0~0.5V Measure of I012#4 =? volt 3~5V
Picture appears
No
No picture
Does the LED light up
No
Is the Voltage at I012 #8= 5V
No
Yes Yes
Panel wire P005 is connected correctly?
Yes
Picture appears
Replug No picture
No
No
Is LED display Amber Erase
Yes Yes
Check if panel light works?
Yes No Is it entering into screen
protect (or power saving) on PC mode? Picture appears
EEPROM No picture
Erase
Picture appears EEPROM No picture
No No
12 pin connector of power Module is connected correctly?
Replace I003(MCU) Picture appears No picture
Yes
Picture appears Replug No picture
Yes
Restart signal to ensure H. V. sync are not absent
Replace Main Board PWB-0778 Picture appears No picture
Measure 12 pin connectors red wire=24V blue wire=2.5V above white wire=2.5V above
Yes
End
Fix at factory
No
Picture appears Replace Power Module, test again. Re-plug white connector, then measure voltage again Picture appears Check if inverter is connected correctly.
No
No
Replug No picture
No picture
Yes
Yes
Picture appears Replace Inverter, test again.
No picture
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(2) Picture Abnormal:
Picture Abnormal
Erase EEPROM, and then check the picture is normal?
No
Are the panel cables (P005) attached correctly? Yes
No Re-plug the panel cables, and check the picture. No Check SMD material at sides for I026 &I027 is welded correctly? Yes Yes After welding, then check the picture. No No
Yes Replace V901 (LCD panel)
Yes
Yes
Change main board (PWB-0778), and check picture. No
Yes
Change Power Module, and check picture. No
Yes End
Change Inverter and check picture. No
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Steps to erase EEPROM
1. Press Power key to turn off the LCD-TV. 2. Press Menu key continuously at same time, then press Power key of remote control to turn on the LCD-TV ,after 3 seconds ago then release Menu key. 3. When " UPDATE EEPROM" appears on the screen, on the Erase EEPROM is complete. Trouble Shooting 1. MCU platform using Winbond W79E632A 2. LabelV32ELBB-E01
TAT V32ELBB
MP 1.1
Custom Model NO. Edition
3. Check SumDCB8 4. BIOS VersionV32ELBB-E01 TAT-MP 1.1 Jan 28 2005 5. EEPROM INITIALPress Menu (located on the right/bottom of set), then Power on (by remote control) 6. Enter Factory ModePress Volume - (located on the right/bottom of set), then press Power on (by remote control) 7. Leave Factory ModePress Power off 8. Self Test Mode (for Burn in)Press Menu and Channel Up (located on the top of set) continuously at same time, then Press Power on (by remote control). After 3 seconds then release Menu and Channel Up keys, test pattern will appear on the screen. 9. Disable Self-Test ModePress Power off (Self-Test Mode can't be disable by disconnecting power cord, it must thru. Power key)
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9. Electronic Circuit Description
9.1 Main Board Circuit
1) Power
Refer to sheet 5 of PWB-0778 circuit diagram. AC 100V~240V is applied to the LCD-TV through power socket into CN1 of power module (FSP216 or PWB 0769), which output provides. (a) DC+24V to Inverter via CN3 #3 ~ #7 (red colour wire). DC+24V is also applied to Main Board via CN2 #1 ~ #2 (blue colour wire) and connect to P006 #12 & #13 of main board, then through L849 to I807 #5 & #13 (Audio Amp. TDA8925). (b) DC+12V applied to panel's T-con board via CN2 #3 & #4 (yellow colour wire) and connect to P006 #3 & #4 of main board, then through L019 to I005 for panel on/off control, which output through L021 to P005 #29 & #30, then connect to T-con board by cable. (c) DC +5V to main board via CN2 #5-#7 (red colour wire) and connect to P006#7~#9 of main board. (1) pass to I012 (Switch SI4431) in on/off control of I017I022etc. (2) regulated by I011 (Regulator LT1117 S2.5) to provide + 2.5V and I010 (Regulator LT1117 S3.3) to provide +3.3V, both powers provide precise voltage for I019 (Scaler).
2) PC Signal
(a) VGA (D-Sub connected VGA cable from PC) Refer to sheet 1 of PWB-0778 circuit diagram. The analog PC signals are supplied through the PJ01( D-sub connector) and RGB input signals are approximately 0.7Vpp in amplitude. R027, R026 and R025 give resistance of 75 respectively for impedance matching. These R.G.B. video signals are AC coupled via 0.047U capacitors C018C017 and C016, and then fed into the ADC port of I019 (Scaler MST5151) at #25#23 and #20 respectively. H.sync & V.sync are applied to I002#13#10 and the processed signal taken from #12#9 are fed into I019 (Scaler) #18#19. The LCD-TV is designed to have the DDC/2B functions, DDC communication between the LCD-TV and computer is via PJ01 (D-sub connector ) #12#15. The EDID data have written into the I001 (EEPROM) in the factory during production, so computer will read out the EDID from the I001 (EEPROM). (b) DVI (DVI-D connected DVI cable from PC) Refer to sheet 1 of PWB-0778 circuit diagrams. The digital signals supplied from the P022 (DVI-24pin connector) and RX2 +/-RX1+/- RX0+/-RCLK+/- input signals fed into the DVI port of I019(Scaler MST5151) at #207 #208 #2#3#5#6#8#9. (c) HDCP (DVI connected HDCP cable from Video Device) Same as (b), but connect HDCP cable to DVD player or satellite STB.
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3) Teletext
Refer to sheet 8 of PWB-0778 circuit diagrams. Pin 70 (XTALIN): The Teletext chip I022 (SAA5361) is operated with 12 MHz clock and which is provided by X004 (Crystal). Pin 73 (RESET): controlled by I 003 (MCU) #31 and which is provided high level (2-3.3V) for I022 reset during power ON. Pin 31 (SAA_AOUT): The input signal from I017 (SAA7117) #M1 and provided a composite format synch for generated Teletext page. Pin 46-48 (RGB_5361): generated R,G, B colors and connected to R108R111R115 the through C142C143C144 to I017 (Video decoder) #AI32AI42AI22 for combined video signal.
4) Panel interface
Refer to sheet 47 of PWB-0778 circuit diagrams. The signals of panel interface are all applied from Scaler I019 (MST5151) to LCD Panel through connector P005 and its cable. The signals IN0, IN1, IN2, PCLK, IN3 from I019 #171~#164 #161 #160 are applied to P005 #13 ~ #26 and used for panel display controls. P005 #29~#30 was +5V for LCD panel is controlled by I003 #6 (FPVCC)Q004 (MTB3904) and I005 (Si4431).
5) MCU
Refer to sheet 3 of PWB-0778 circuit diagrams. * Pin 21 (UCLK): The Microcontroller I003 (WE78165EP) is operated with 24 MHz Clock and which is provided by X001(Crystal). * Pin 10 (Reset ) : C040 and R033 constitute a Reset circuit. It provides a necessary active high reset signal to I003 (MCU) # 10 for proper operation of I003. * Pin 15 (IR ) : The signal IR_DA at I003 #15 is connect with Infrared Receiver. If the IR receives some signal, I003 will send interrupt signal via I003 #17#16 ( MSDAMSCL) to control other chips . * Pin 36~43 (Data transfer): The signals AD0~ AD7 transferring between I003 (MCU)and I019 (Scaler) are assigned to I003 #36~#43. * Pin 11,13 (Debug) : The signals TXD and RXD used for debugging firmware are assigned to I003 #13 11. I004 (24LC32) provides necessary non-volatile storage for operating variables and parameters. It is controlled by I003 via MSDA and MSCL signal, which are pull up to +5V voltage by R039 and R041 (10K).
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9.2 KeyLED&IR Board Circuit
Refer to KeyLED & IR circuit diagram of PWB-0768-DPWB-0768-C in Chapter10.2 and sheet 3 of PWB-0778 circuit diagram(Main Board). * Key: The Keyboard is connected with Main Board through socket P003 and wire assembly and to control the I003 (MCU) .So , if the operation of key fails , the I003 (MCU) may fail . * IR: The IR01 (PL-IRM0101-3) is a receiver for infrared remote control systems. The demodulated output signal can directly be decoded by MCU I003#15 through P003#15 and wire assembly. * LED: The dual LED DI01 on LED&IR Board is controlled by MCU I003 #1#23 through P003 #12 #13 and wire assembly.
9.3 Tuner & Video Board Circuit
1) TV signal
Refer to sheet 12 of PWB-0786 circuit diagram. UT01 (FQ1216MEPT or TAPE-S701D) is a multi-standard TV tuner for CCIR B/G D/K I L/L' system and the front-end has a built-in digitally (I2C) PLL tuning system. AF and SIF sound from UT01 (Tuner) are applied to Audio Processor I804 ( MSP3410) #47#50. The specifications of Tuner are as follows: Intermediate Frequencies System L Picture Carrier 38.90 Colour 34.47 Sound 1 32.40 Sound 2 NICAM 33.05 Channel Coverage BAND Low Band Mis Band High Band PINNING SYMBOL N.C. N.C. +5V SCL SDA AS
L' 33.95 38.38 40.40 39.80
B/G 38.90 34.47 33.40 33.16 33.05
D/K 38.90 34.47 32.40 33.05
I 38.90 34.47 32.90 32.348
Frequency (MHz) 48.25 to 160.00MHz 160.00 to 442.00 MHz 442.00 to 863.25 MHz
PIN 1 2 3 4 5 6
DESCRIPTION (AGC Monitor) Do not connect * (Tuning Voltage Monitor ) Do not connect Supply Voltage Vb , tuner section. I2C serial Clock I2C serial Data I2C Address Select
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N.C. N.C. 2nd IF Sound CVBS +5V , IF AF O/P (TV) Ground
X X 9 10 11 12 13 14
Not connected Not connected Second IF sound output Composite Video Baseband Signal Supply Voltage , IF section AF sound output Mounting Tags
2) Composite Input
Refer to sheet 12 of PWB-0786 and sheet 6 of PWB-0778 circuit diagram. Video decoder 1017 (SAA7117) is able to decode the colour of PAL, SECAM, and NTSC signals into ITU 601 compatible colour component values, It accepts 4 different video signals, including Composite Video (CVBS), S-Video (Y/C signal), Scart-R.G.B. and Component Video. There are 4 A/D converters at the I/O port of 1017 (SAA7117) which includes 16 channel analog inputs. I017 (SAA7117) with 16 channel analog inputs accept Video/S-Video/Component signals from P800 P804 P801 P802 on PWB-0786 and provides at the output of 8 bits X-port and then connected to Port V of Scaler I019 #41~ #48 and #54 ~ #61.
3) Component Input
(a) For Scart RGB input, same as above Composite input. (b) For RCA jack Y Pb Pr input, which came from P800 to P 807 of PWB-0786, then pass connecting board to P001 of PWB-0778. P00l through C031/C032/C034/C036 to I019 (Scaler) #31#31#33#28 for SOGS/GREEN2+/RED 2+/BIN2+ input port.
4) Video Output
Refer to sheet 2 of PWB-0786 circuit diagram. UT01 output provides the Composite Video through (a) C870 to Q801 #E and pass R838 to P801 (Scart-1) #19 made for Video Output. This Video Output was only for TV. (b) L840R833 and R834 to ground for SAA_TV, then fed into I802 (Selector TA8851) #5, its output (1) #46 pass to Q800 #E and connected P810P811 to P818 (RCA jack) made for Video Output. (2) #36 throughR822C873 to Q802 #E and connected to P802 (Scart-2) #19 made for Video Output. This Video Output included TV and Video (RCA jackScart-1Scart-2) which selected by I802 (TA8851).
9.4 Connecting Board
PWB-0768-A was a connecting board which made for a bridge between PWB-0778 (Main Board) and PWB-0786 (Tuner & Video Board) for P001/P002 and P807/P808 connecting.
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9.5 Inverter Board Circuit
The Inverter Board is fed with +24V through socket CN3 #3~7 on Power Module (PWB-0769 or FSP216) and wire assembly.It offers 4.5mA (typical ) to each lamp of backlight in LCD panel. The On / Off of the inverter is controlled by the voltage of CN3 #12which is applied from I003 (MCU) #5 (FPBACK) to R077Q007, then via P006#13 on Main Board. While the voltage of P006 #13 is `H'(2.4~5V) , the lamp of backlight will be turned on. While the voltage of P006 # 13 is `L' (0~ 0.8V) , the lamp of backlight will be turned off. Adjusting the Back Light in OSD menu is to control the voltage at #200 (PWM) of I019 (Scaler: MST5151) and pass to Q006 for reverse, then applies to P006 #11 on Main Board and through wire to CN2 of Power Module, then via CN3#11 connect to Inverter by wire assembly. The range of the voltage is from 0V to3.0V. If the voltage of P006#11 is 0V, the screen will get dim, if it's 3.0V, the screen will get light. It means that the different voltage will change the lamp current through the inverter to make the screen lighter or dimmer.
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10. Circuit Diagram
10.1 Main Board (PWB-0778)
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31
32
33
34
35
36
37
38
10.2 Key(PWB-0786-B), LED&IR Board (PWB-0786-C)
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10.3 Tuner& Video Board (PWB-0786)
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10.4 Connecting Board (PWB-0768-A)
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10.5 Power Board (PWB-0769)
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11. PCB Layout
11.1 Main Board PCB (PWB-0778):
-
43
44
11.2 Key , LED&IR, Connecting Board PCB (PWB-0768)
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11.3 Tuner & Video Board PCB (PWB-0786)
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11.4 Connecting Board PCB (PWB-0768-A)
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11.5 Power Board PCB (PWB-0769)
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13. Spare Parts List
Model Part number
TFT Panel Power Module Tuner Board Assembly IR Board Assembly Key Board Assembly PCBCONNECTOR A Assembly Main Board Assembly Speaker Remote control
ELBB 5051253677 6693006612 (RA) 6693006600 (RB) 5097635901(I) 5097635903(SKD) 5097635900(SET) 5098800932(I) 5097636411(SKD) 5098800867(SET) 5098800931(I) 5097636414(SKD) 5098800866(SET) 5098800933(I) 5097636412(SKD) 5098800865(SET) 5097643701(SET)-I 5097646702(SKD) 5097643700(SET) 5055125600 5052731029(no logo) 5252731072(T) 5052731032 (A) 6647024460 5030057148 (I) 5030007058 (T) 5030057154 (A) 5056706150(I) 5056705939(EU) 5056706196(ISRAEL)
EE PARTS
MCU User's Manual Power Cord
Front Cover IR Lens Speak Cover
5642298702-I 5642298704-T 5640332100 5642321101(R)-A 5642321151(L)-A 5642321103(R)-T 5642321153(L)-T 5642564901(L)-A 5642564951(R)-A 5642564902(L)-T 5642564952(R)-T
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ME
Speak Net
Back Cover D-Sub Cover Visa Bracket Control Key Neck Cover Neck Bracket Base Base Bracket Power Cap Tuner Box Up Tuner Box Down
5642298802-I 5642298804-T 5642320102-I 5642320104-T
PARTS
5648743900 5642850901-I 5642319802-I 5642319804-T 5648744001 5641415901-I 5641415904-T 5640408900 5641100500
5642730801-I 5642730860-T 5642730981-I 5642730980-T
I = Itaico T=Tatung A=Akai N-Natural P=Premium
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13. Mechanical Disassembly
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No.
M2 M3
Part Name
SPEAKER-NET SPEAKER SCREEN SPEAKER INSULATION SHEET FRONT COVER POWER CAP FUNCTION KEY IR LENS SOUND PIPE PANEL BRACKET LCD MBRACKET MPCB SHIELD VESABRACKET
Parts No. 5642564901(L) 5642564951(R) 5642321151(L) 5642321101(R) 5646510300 5642298701 5641100500 5642850901 5640332100 5642680700 5642736700 5642730702 5646257000 5648743900 5642298801 5642319801 5642320101 5642730860 5642730960 5648744001 5641415902 5640408900 5642025400 7134151182 5640228400 7134161182 7001260612 7134160652 7001261112 7134251482 7000311122 7136160654 7134251155 7135251656
M4 M5 M6 M7 M8 M9 M10 M11
M13 M14 M15 M16 M17 M18 M19
BACK COVER NECK COVER D-SUB COVER TUNNER BOX UP TUNNER BOX DOWN NECK BRACKET BASE COVER BASE BRACKET RUBBER FOOT PZP 4X08 SPEAKER SCREW M3X14 PZP 3X08 PP 4X06 PZS 3X06 PP 4X08 PZP 4X10 PPW 4X10 PRW 3X06 BFB 4X08 PFS 4X12
M21
S2 S3 S4 S5 S6 S7 S8 S9 S10 S11
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14. Firmware Program Update Steps
Step 1 : Install Programs
(a) Save the file of MSTV_TOOL and the folder of PC with Window XP .(first time) IspWriter on the Desk top of a
(b)
Save the updated programs, xxxx.H00 and xxxx.H01 into the same PC.
Step 2 : Connect Cables
(a) Connect Power Cord to LCD-TV. (b) Connect RS-232 Cable between PC and Mstar ISP TOOL . (c) Connect Printer Cable between PC and Mstar ISP TOOL . (d) Connect D-SUB Cable between Mstar ISP TOOL and LCD-TV.
(d)VGA
Mstar ISP Tool
(C) Printer Cable
( b) RS-232
(a) Power Cord
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Step 3 : Set and link the MSTV-Tool
(a) Press POWER Button to turn on the LCD-TV. (b) Click MSTV-TOOL.exe.
(c) Click COM Port Setting to select the COM port, which you connect to. (Be sure your setting actually follow the port you connect to)
(d) Make sure RTS status is set to High.
(e) Click to link with LCD-TV, and then automatically.
will turn to
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Step 4 : Set ISP writer and update firmwares
(a) Click Configuration and choose ISP Writer Setting . Select the folder of and then choice 8051 IspWriter.exe / (b) Click to execute 8051 IspWriter.exe. Select Chip is set to W79E632 . ". IspWriter
(c) When the following window appears, make sure
(d) Click Select File 0 click OK .
to select program
xxxx.H00 . Then select Inte Hex and
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(e) Click Select File 1 click OK .
to select program
xxxx.H01 . Then select Inte Hex and
(e) Click here to select the Port Name, which you connect to.
(Be sure your setting actually follow the port you connect to)
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(f) Click
ConNect Next Chip , and then click
Program All .
(g) When the Program: OK! appears, click
.
.
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Step 5 : Initial EEPROM
(a) Press POWER Button to turn off LCD-TV. ( Make sure LED Indicator lights Red color. ) (b) Press MENU Button and keep pressing it ( do not release), and then press POWER Button once. (c) When LED Indicator changes to Green color, release MENU Button, which you are pressing. When UPDATE EEPROM appears on the screen, the Initial EEPROM is completed.
Step 6 : How to check the firmware version ?
(a) Press POWER Button to turn off LCD-TV. ( Make sure LED Indicator lights Red color. ) (b) Press VOLUME Button and keep pressing it ( do not release), and then press P OWER Button once. (c) When LED Indicator changes to Green color, release VOLUME Button, which you are pressing. Now the LCD-TV is in Factory Mode. (d) Press MENU Button to check the version such as V32ELBB-EI1-MP1.3 in the up-left window. (e) To exit the Factory Mode, press POWER Button to turn off and then on the LCD-TV .
Notice
If you want to update the 2nd set , disconnect the VGA Cable (D-SUB) from 1st set , and then connect to 2nd set. Then, repeat the procedure from Step 4 (b)-- Click
.
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