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Acer AT4202P Service Manual

Acer at4202p: service manual.
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ACER SERVICE MANUAL
Trident EX52 compatibly model:
AT4202P
1

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   Summary of Contents for Acer AT4202P

  • Page 1 ACER SERVICE MANUAL Trident EX52 compatibly model: AT4202P...
  • Page 2 THIS DOCUMENT IS FOR REPAIR SERVICE INFORMATION ONLY. DATE:2006/02/13...
  • Page 3: Table Of Contents

    1、SPECIFICATION ....…………...….. 1-1 General Sepecificaation...…….. …...……..………...……. 1-2 Feature Summary...……………...………….. 1-3 External Interface..……………...…… 1-3-1 Video/Audio Inputs……....….. 1-3-1-1 TV Antenna Interface.......……… 1-3-1-2 Component Intputs...
  • Page 4 4、Trouble shooting chart..…………... 24 4-1 PANEL Trouble shooting…….………..……… 4-2 Solution process of MGPC0……………………..... 4-2-1 Panel cannot be lit up………………..………. 25 4-2-1-1 Check peripheral circuits procedure..………. 4-2-1-2 Check Image board procedure…..……… 4-2-2 Picture Display --Dynamic picture abnormal……………………………………………….
  • Page 5 11-1-2 Voltage value of IC necessary…………………………………………………………… 11-2 AUDIO and TUNER Board CHECK……………………………………………………………….. 12、Mechanical Introduction………………………………………………………………………………… 12-1 PDP Internal view……………………………………………………………………………………. 12-2 Mechanical of cabinet front disassembly…………………………………………………………. 12-3 Disassembly and assembly……………………………………………………………………….. 12-3-1 PDP stand removal………………………………………………………………………… 12-3-2 Back Cover Removal………………………………………………………………………. 12-3-3 Rear Low Cover removal…………………………………………………………………… 71 12-3-4 Main Board(MGPC) and TUNER AUDIO Board (TUPC)removal………………………...
  • Page 6: Specification

    1、SPECIFICATION 1-1-1 General Specificaation Item Screen size Aspect Display pixels Panel Effective display size Spec Number of color Contrast Ration Peak brightness TV Tuning TV Mode Sound system Color system Video S-Video SCART Europe 21Pin Video Mode Component 1,2 (Y Pb Pr/ Y Cb Cr) Signal input Plug and play Support Frequency...
  • Page 7: Feature Summary

    1-2 Feature Summary 42 inch Large Screen Flat Panel Plasma Display Panel Resolution: WVGA (852 x 480 Pixels) Panel Max Brightness: 1500 cd /m Panel Max Contrast Ratio: 10000:1 View Angle: horizontal ≥160º/vertical ≥160º Built-in Single-way TV Tuner, Supporting 100channels Full Channel TV Signal Receiving: 48.25MHz ━863.25MHz Factory presets Teletext WST625 for Europe...
  • Page 8: External Interface

    1-3 External Interface Most of these interfaces are located at the back-panel. There’s also a group of connectors located on the side of this device for easier access. The following figures depict these A/V connectors. Page 8 of 99...
  • Page 9: Video/audio Inputs

    1-3-1 Video/Audio Inputs The following sections specify the video/audio inputs for P42S351 1-3-1-1 TV Antenna Interface ①. TV Antenna Connector P42S351 shall provide a f-type cable connector with 75 ohms termination on its back panel for reception of radio frequency signals. ②.
  • Page 10 source to “D-SUB” state. Then turn on the PC. Pin – Assignment of 15-pin FUCTION Red Video Green Video Blue Video Ground Red Ground Green Ground Blue Ground Sync Ground Serial Data for DDC H-Sync. V-Sync. Serial Clock for DDC ②.Audio Inputs P42S351 shall provide a 3.5 mm jack for the stereo audio signal associated with VGAinput.
  • Page 11: Dvi Input

    DVI INPUT 1-3-1-4 DVI input P42S351 shall accommodate a DVI type digital video source as specified in this section. ①. Video Inputs Connect DVI-D 24 Pin signal cable(TMDS cable)from equipment with DVI-D jack to the back of this TV Set. And connect the earphone cable from equipment with earphone output jack to AUIDO input jack near the DVI-D jack.
  • Page 12: Scart Input

    P42S351 shall support the following input format on its DVI input. 1-3-1-5 SCART Input SCART 1 We have three SCART signal input jacks . Scart Connector male Output connector PIN1 Audio right out PIN3 Audio left (or mono) out PIN4 Audio return PIN7 Blue out...
  • Page 13: Audio/video Outputs

    PIN15 Red out PIN13 Red return PIN16 RGB status out PIN14 RGB status return PIN19 Sync (composite video) out PIN17 Sync return PIN 21 Shield 1-3-2 Audio/Video Outputs 1-3-2-1 Composite Video Output P42S351 shall provide a RCA type receptacle on its back panel for composite video output. (Side board) 1-3-2-2 Analog Audio Output P42S351 shall provide two RCA type receptacles for external connection to a stereo...
  • Page 14: Service Interface

    RGB input when DPMS setting is actived.There is a delay, according to the DPMS setting before the transition from Onstate to any power saving state to avoid unintentionally entering of a power saving stage during display resolution and timing mode changes. Transition from any power saving state to another can be instantaneous.
  • Page 15: Environmental Requirements

    base for external mounting applications. When the base is removed, there shall be no additional non-removable parts that are visible from the front of the display 1-6 Environmental Requirements 1-6-1 Temperature Ranges Operating Temperature……………………………………………………..0°C to 40°C Storage Temperature……………………………………………….. …….10°C ~ + 50°C 1-6-2 Humidity Operating ……………………………………………………………………...
  • Page 16: Operation

    3、Operation 3-1 Operation of Remote Control Transmitter Page 16 of 99...
  • Page 17: Key Function

    3-2 Key function 3-3 OSD Main Explanation Main Fuction 1. Press “ MENU” key on Remote Control or the front panel to open or close the menu. 2. Press “▲▼ ” to select an item. 3. Press “►” or “Enter” to enter a sub menu item or an enable adjusted item. 3-3-1 Main Menu Press the SOURCE...
  • Page 18: Search Menu

    Press the Menu button on the remote control or the control panel to enter the main menu. Press “▲▼ ” button to select “SEARCH” menu, “VIDEO” menu, “AUDIO” menu, “TIME” menu, “SETTING” menu ,”SCREEN”menu or “PIP”menu. Press “►” or “ENTER” button to enter the next level submenu, press “EXIT” button close all the menu.Press “...
  • Page 19 ● Storage:the saved serial number of the programme. ● Sound System: Preset TV sound system: D/K、I、B/G 、or L。 ● Cable or Air: switch signal among V/UHF、cable. ● Channel No.: to set serial numbers for programs. ● Color System: to select color systems for programs:Auto ●...
  • Page 20: Video Menu

    3-3-3 Video Menu Video Mode: switch picture among Dynamic、Standard、Mild、Game、User。 Color Temp: Color temperature select,Cool、Normal、 Warm 、User、Red、Green、 Blue adjust. Color Adjust:Set color parameter adjust. Contrast: To adjust the contrast ratio Brightness: To adjust the brightness Colour: Color chroma adjust Sharpness: To adjust the sharpness, 0 ~ 100 adjust. Tint: To adjust color phase,to make the image change to red or green (Only for NTSC) 0 ~ 100 Adjust Press Menu button to display the menu, use “▲▼...
  • Page 21: Time Menu

    L50 ~ 0 ~ R50 Adjust Treble: Adjust the treble sound Bass: Adjust the bass sound TV Speaker: Switch Internal /External speaker Press Menu button to display the menu, value of the selected item. Press Exit to return to the previous level menu and press Menu again to exit the menu.
  • Page 22: Screen Menu

    Child Lock: On/ Off lock. Select ON , lock the keypad, at the same time the screen is be blanked, you must input your password. Change Password: Need password to change settings,initial Default password is:888888 Press Menu button to display the menu, use “▲▼ ” to select an item. Press “►” or “Enter” to adust the value of the selected item.
  • Page 23: Pip Menu

    3-3-8 Pip Menu INPUT: switch main signal among TV, AV1,AV2,AV3,AV4, S-Video, Component1/ Component2 , VGA and. DVI. PIP:Switch the PIP function ON/OFF. (press the “SWAP”key under the “PIP”situation ,if the main picture can’t be small picture,turn small picture into the main picture,press the “PIP”key on remote control to enter it . PIP INPUT: press“...
  • Page 24: Pip Input Mode

    3-8-1-1 PIP Input Mode 3-8-1-2 PIP Function Table List 1 : TRIDENT SCALER PC RGB ANALOG INPUT 2 : TRIDENT SCALER 24 BIT DIGITAL INPUT 3 : TRIDENT SCALER YPbPr ANALOG INPUT 4 : TV SIGNAL AND SCART RGB --> SAA7117 --> 8BIT DIGITAL INPUT 5 : AV SIGNAL -->...
  • Page 25: Solution Process Of Mgpc0

    4-2 Solution process of MGPC If change new Image board, it is necessary to refresh DDC and readjust white balance. 4-2-1 Panel cannot be lit up 4-2-1-1 Check peripheral circuits procedure Page 25 of 99...
  • Page 26: Check Image Board Procedure

    4-2-1-2 Check Image board procedure Page 26 of 99...
  • Page 27: Picture Display --dynamic Picture Abnormal

    4-2-2 Picture Display --Dynamic picture abnormal Page 27 of 99...
  • Page 28: Dvi Picture Abnormal

    4-2-3 DVI picture abnormal Page 28 of 99...
  • Page 29: Component Picture Abnormal

    4-2-4 Component picture abnormal Page 29 of 99...
  • Page 30: Rgb Picture Abnormal

    4-2-5 RGB Picture Abnormal Page 30 of 99...
  • Page 31: Video Picture Abnormal

    4-2-6 Video Picture Abnormal Page 31 of 99...
  • Page 32: Dc Power Supply

    4-2-7 DC Power Supply Page 32 of 99...
  • Page 33: Tuner&audio Board Faults Handling

    4-3 TUNER&AUDIO BOARD FAULTS HANDLING 4-3-1 Check DC Power Supply 4-3-2 Tuner Faults Handling Page 33 of 99...
  • Page 34 4-3-3 Tuner&Audio Board Faults Handling Page 34 of 99...
  • Page 35: White-balance Adjustment

    5-1 Equipments list Chroma7100 1set VG828 video signal generator 1set Chroma-2326 1set 5-2 Preparation and Adjustment process 1、 Preparation: Connect rear Video port of PDP with AV port of VG-828. Connect component port of PDP with YPbPr port of VG-828 Connect VGA port of PDP with corresponding port of Chrom2326 Turn power of PDP and test instrument on.
  • Page 36 balance page” and make Chroma 7100 x, y value into color temperature spec and Y value to maximum. ( Standard: x = 295±10, Set Pattern generator to 640X480(60) VGA output and 32 Gray scale pattern. Used remote control to entry factory mode, adjust Green offset value and Green gain value in “white balance page”...
  • Page 37: Ddc Program And Test

    maximum. ( Standard: x = 295±10, 1.20 Set Pattern generator to PAL output and 32 Gray scale pattern. 1.21 Used remote control to entry factory mode, adjust Green offset value and Green gain value in “white balance page” to make 32 gray scale pattern can be distinguished 28 gray scale at least, and the most darkness level is totally dark, and make sure the most brightness two level can be distinguished 1.22 Set Pattern generator to PAL output and 20% white screen pattern.
  • Page 38: Flash Update

    1、 Prepare 1 piece of RS232 cable(The Pin connection see the Figure-1,If difference, please re-connect the cable)and 1 set of PC. 2、 Connect the RS232 cable with PC and PDP(See the Figure-2). TO PC TO ACER PDP 9PIN (Female) 9PIN (Female) Signal Pin...
  • Page 39 3. Press the AC power switch. It will show the duologue window when PDP and PC connect correct. LED is red(If the connect is not correct,it will retain like figure 1,and the PDP will open, LED is blue ) press “confirm”;...
  • Page 40 Click the Prog key , it will show duologue window as picture 5 ,it start to write he soft ware , RE: It will use about 3 minute to write soft ware, Do not turn-off the PDP during that time; otherwise it will make the Flash IC break.
  • Page 41: Software Administer Block Diagram

    8、Software Administer Block diagram 8-1 Main Block diagram (Kernel part) Page 41 of 99...
  • Page 42: Source Key Block Diagram

    8-2 SOURCE key Block diagram _VK_AV/TV_ ProcessCommand tvAppSetOSD toeLoadOSDItems (DirectMenus) tdSetSysTimer tdClearSysTimer bDirectMenu=_TRUE_ toeInvokeMenu4 toeDrawOSDMenu2 toeUserDrawOSDMenu ucCurrentMainMenuID=t_TOE.ucMenuID toeResetMenuStatus Page 42 of 99...
  • Page 43: Menu Key Block Diagram

    8-3 MENU key Block diagram _VK_MENU_ ProcessCommand tvAppSetOSD tdSetSysTimer tdClearSysTimer bMainMenu=_TRUE_ bEEpromOnline? toeUserGetPersistentItemValue toeUserGetPersistentItemValue Page 43 of 99...
  • Page 44: Mode Check Block Diagram

    8-4 Mode Check Block diagram Page 44 of 99...
  • Page 45: Scart Key Choose Process

    8-5 SCART Key Choose Process ProcessCommand Page 45 of 99...
  • Page 46 NeedUpdataOSD clearSysTimer(_OSDTIMER_) toeLoadOSDItems bNeedUpdateOSD? NoSignal UnKnowSignal NeedClearTimer ClearSysTimer(_SOUNDINFO_) MPSourceIsScart ScartSourcebak != MPSource ScartSourcebak = MPSource PoweronStart Page 46 of 99 ShowXDDemo(_TRUE_) ShowNoSingal...
  • Page 47 ShowProgramStatus SetSysTimer TranslateTeletextKey tdCommandTT GetTTSysState _TT_STATE_TEXT_ AppSetOSD IsRealKey AutoSleepTimer NeedBlackScreen AutoSleepTimer = AUTOSLEEP_SECOND g_Timer.w2HourOff = 0 Page 47 of 99 AutoSleepTimer = 0...
  • Page 48 NeedUpdateOSD = _FALSE_ SortShowInfo = g_Data.bShowInfo NeedClearTimer = _TRUE_ VirtualKey _VK_NOSIGNAL_ ClearSysTimer(_XDDEMOTIMER_) ShowInfo = _TRUE_ !ShowProgramStatus && !ShowSoundStatus ShowProgramStatus NeedClearTimer = _FALSE_ SetSysTimer ProcessCommand(ucVirtualKey) Page 48 of 99 !g_Data.bShowSoundStatus ShowSoundInfo SetSysTimer...
  • Page 49: Block Diagram & Explain

    9、Block diagram & Explain 9-1 PDP block diagram and functions MGPC IR/B KEPC NOTICE: 1.Panel P9Z1 TO PANEL CN8001 2.Panel CN8004 TO MGPC CN120 3.Panel CN8007 TO MGPC CN121&TUPC CN183 4.MGPC JP12 to TUPC JP182 5. MGPC JP13 to TUPC JP183 6.MGPC CN127 TO TMPC CN127 7.TUPC CN670 to TMPC CN210 8.TUPC J602 to AUPC H5Z1...
  • Page 50: Image Board Block Diagram And Signal Introduce

    9-2 Image board block diagram and signal introduce 9-2-1 Image board block diagram 4Mx32 24bit M16C Sil9011 RS232 Audio DVI/PC RS232 Source MENU Main Board LVDS SVP_EX52 SAA7117A PIP Decode 8bit Main AV BA7657F CN127 Video S-Video Audio DVI Audio PC From side board Y Pb Pr PC/RGB...
  • Page 51: Input Signal Introduce

    9-2-2 Input signal introduce 1. VIDEO: transmit bright & chroma signal , it is general ,its picture quality is equal to the general VCD.S-VIDEO transmit the bright and the chroma single, and can reduce/control the cross-interfere , it is better than the Video. 2.
  • Page 52: Waveform Of Signal

    10、Waveform of signal 10-1 Waveform of input signal YCbCr:Timing946 Pattern946 color bar picture Y Luminance Signal YCbCr:Timing946 Pattern946 color bar picture Blue Signal YCbCr:Timing 949 Pattern921 Gray Picture YCbCr:Timing946 Pattern946 color bar picture Red Signal YCbCr:Timing 949 Pattern936 Full White Picture Y Luminance Signal Page 52 of 99...
  • Page 53 YPBPR YPbPr:Timing955 Pattern946 color bar picture Y Luminance Signal YPbPr:Timing955 Pattern946 Color bar picture Blue Signal YPbPr:Timing953 Pattern921 Gray Picture YPbPr:Timing955 Pattern946 color bar picture Red Signal YPbPr:Timing954 Pattern936 Full White Picture Page 53 of 99...
  • Page 54 VIDEO Video:Timing946 Pattern946 Color bar picture Video:Timing949 Pattern936 Full White Picture S—VIDEO Video:Timing949 Pattern921 Gray Picture S-video:Timing946 Patern946 Color bar picture S-video:Timing949 Pattern936 Full White Picture S-video:Timing949 Pattern921 Gray Picture Page 54 of 99...
  • Page 55: Signal Waveform In The Image Board

    10-2 Signal waveform in the image board ·VIDEO Video:Timing946 Pattern946 Color bar picture (Y/C )In pin88、Q602 E rank separate Video:Timing 949 Pattern936 Full White Picture U602(Y/C )In pin88、Q602 E rank separate Video:Timing 949 Pattern936 Full White Picture Decoder output 8bit digital signal Video:Timing946 Pattern946 Color bar picture U602 U602(Y/C )Out pin84U611 In pin73...
  • Page 56 Video:Timing 949 Pattern921 Gray Picture Video:Timing 949 Pattern921 Gray Picture U602(Y/C )Outpin84 U611 In pin73 U611 Decoder separate output 8bit digital signal ·S—VIDEO S-Video:Timing 946 Pattern946 Color bar picture S-Video:Timing 946 Pattern946 Color bar picture U600 pin5 Q600 E rank U600 PIN18 U602 pin88 S-Video:Timing 946 Pattern946 C olor bar picture S-Video:Timing 949 Pattern946 C olor bar picture...
  • Page 57 S-Video:Timing 949 Pattern936 Full White Picture U600 pin5 Q600 E rank S-Video:Timing 949 Pattern936 Full White Picture U602 pin84 U611 pin73 S-Video:Timing 949 Pattern921 Gray Picture U600 pin18 U602 pin88 S-Video:Timing 949 Pattern936 Full White Picture U600 pin18 U602 pin88 S-Video:Timing 949 Pattern921 Gray Picture U600 pin5 Q600 E rank S-Video:Timing 949 Pattern921 Gray Picture...
  • Page 58 YCBCR YCbCr:Timing946 Pattern946 Color bar picture Y Signal --L618 YCbCr:Timing 946 Pattern946 Color bar picture B Signal—L617 YCbCr:Timing 949 Pattern936 Full White Picture R/B Signal—L619/L617 YCbCr:Timing 946 Pattern946 Color bar picture R Signal—L619 YCbCr:Timing 949 Pattern936 Full White Picture Y Signal—L618 YCbCr:Timing 949 Pattern921 Gray Picture Y Signal—L618 Page 58 of 99...
  • Page 59 YCbCr:Timing 949 Pattern921 Gray Picture R/B—L619/L617 Signal YPBPR YPbPr:Timing 955 PATTERN946 Color bar picture Y Signal—L611 YPbPr:Timing 955 Pattern946 Color bar picture B Signal—L610 YCbCr:Timing 949、946 Pattern921、936、94 Gray Picture/ Color bar picture/ Full White Picture Decoder output 8bit digital signal YPbPr:Timing 955 Pattern946 Color bar picture R Signal—L612 YPbPr:Timing 954 Pattern936 Full White Picture...
  • Page 60 YPbPr:Timing 954 Pattern936 Full White Picture R/B Signal—L612/L610 YPbPr:Timing 953 Pattern921 Gray Picture R/B Signal—L612/L610 R/G/B RGB:Timing4 Pattern101 Pane Picture R—FL700 Waveform YPbPr:Timing 953 Pattern921 Gray Picture Y Signal—L611 RGB:Timing4 Pattern101 Pane Picture G—FL701 Waveform Page 60 of 99...
  • Page 61 RGB:Timing4 Pattern101 Pane Picture B—FL702 Waveform RGB:Timing4 Pattern101 Pane Picture V—FL705 Waveform RGB:Timing4 Pattern105 Full White Picture H—FL704 Waveform RGB:Timing4 Pattern101 Pane Picture H—FL704 Waveform RGB::Timing4 Pattern105 Full White Picture RGB—FL700/701/702 Waveform RGB:Timing4 Pattern105 Full White Picture V—FL705 Waveform Page 61 of 99...
  • Page 62 RGB:Timing172 Pattern105 Window Picture R—FL700 Waveform RGB:Timing172 Pattern105 Window Picture B—FL702 Waveform RGB:Timing172 Pattern105 Window Picture V—FL705 Waveform RGB:Timing172 Pattern105 Window Picture G—FL701 Waveform RGB:Timing172 Pattern105 Window Picture H—FL704 Waveform RGB:Timing4 Pattern27 Color bar picture R—FL700 Waveform Page 62 of 99...
  • Page 63 RGB:Timing4 Pattern27 Color bar picture RGB:Timing4 Pattern27 Color bar picture G—FL701 Waveform B—FL702 Waveform RGB:Timing4 Pattern27 Color bar picture RGB:Timing4 Pattern27 Color bar picture H—FL704 Waveform V—FL705 Waveform Page 63 of 99...
  • Page 64: 11、11check And Measure

    11、Check and Measure 11-1 Image board Test the power of each chip with the universal meter, to ground impedance and earth situation. 11-1-1 Power Check and Measure Supply with getting red arrow point A/B/C/D that identification come out for power, image of board with the interface among having picture, it corresponding power make detection method separately among following several picture.
  • Page 65: Voltage Value Of Ic Necessary

    ②. In the following picture it is suc cessively 1 to 11 pin of CN120 from left to right. Among them, The second pin connects STB5V and supplied the power of CPU U38,this voltage is direct provide Panel Powre Board when turn on the PDP,And this is first reason for CPU normally working,4pin is Relay on signal output,5pin connect D12V,8pin and 9pin connect 3.3V power,11pin connect D6V Power,1pin no connect,3pin/6pin/7pin connect GND.
  • Page 66: Audio And Tuner Board Check

    D12V 11-2 AUDIO and TUNER Board CHECK In the top picture it is provide Audio/Tuner Board Audio Amp power,Among them,1pin and 2pin connect 12V,3pin/4pin/6pin connect GND,5pin no connect.PLS consult nether oicture: U107(AZ1117) Pin 3 U605(TA2024) Pin24.25.29.30.33 Page 66 of 99...
  • Page 67: Mechanical Introduction

    12、Mechanical Introduction 12-1 PDP Internal view Page 67 of 99...
  • Page 69: Mechanical Of Cabinet Front Disassembly

    12-2 Mechanical of cabinet front disassembly Page 69 of 99...
  • Page 70: Disassembly And Assembly

    12-3 Disassembly and assembly 12-3-1 PDP stand removal 1) Unplug the AC power and all signal cables. 2) Place the PDP upside down on a tabletop (use a protection sheet or EPE bag), Take care, that this is flat and free from obstacles like screws, to prevent damaging the fragile PDP glass filter (1). 3) Remove the four black colored screws around the stand holder (2).
  • Page 71: Back Cover Removal

    12-3-2 Back Cover Removal 1). Remove the six big black colored screws in the panel holder as the red-circle showed (1). 2) .Remove the eleven black colored screws around the terminals as the green-pane showed (2). 3) .Remove the twerty-nine black colored screws around the back cover as the blue-pane showed (3). 4) .Carefully prize up the back cover from the left of the PDP (5).
  • Page 72: Rear Low Cover Removal

    12-3-3 Rear Low Cover removal 1). Carefully use a allen screwdriver to remove the six silver colored allen screws M3*6mm (1). 2) .Remove the five black screws(2). 3).Remove the TUNER connect (3). 4).After remove the TUNER connect(4). 5).Remove the Rear Low Cover as the direction arrowhead showed (5). Page 72 of 99...
  • Page 73: Main Board(mgpc) And Tuner Audio Board (tupc)removal

    6). The Rear Low Cover done(6) 12-3-4 Main Board(MGPC) and TUNER AUDIO Board (TUPC)removal 1). Disconnect the all connectors(green circularity). 2) Remove the six silver screws from MGPC(main board)(1) and romove six silver from TUPC(2). MGPC plate 3) Remove the MGPC board from PCB plate. 4).Done Page 73 of 99...
  • Page 74: Pcb Plate Removal

    12-3-5 PCB Plate Removal 1). Remove the two Cable Clips from the PCB Plate(2) 2) .Remove the four sliver screws(1). 3). Remove the PCB Plate 12-3-6 Key Board Remove 1) Remove the four silver screws(1). 2). Pull the Bezel downside(2), then push and take out the KEY board assembly(3). PCB plate Page 74 of 99...
  • Page 75: Side Av Board Removal

    3). Remove the five silver screws to disassemble the key board from Key button. 12-3-7 Side AV Board Removal 1) .Remove the two silver screws (1). 2). Remove the side cover from Side AV board(2) 3). Disconnect the blue circularity from Side AV board. 4).
  • Page 76: Panel Module Removal

    12-3-8 Panel Module Removal 1) .Remove the four silver screw around the PANEL corner (1). 2).Remove all the aluminum foil around the panel (2), after assemble the new panel, must re-affix the aluminum foil, if it’s broken must change a new one, otherwise, the EMI can be affected. 3).
  • Page 77: Panel Wiring Diagram

    12-4 Panel Wiring diagram Page 77 of 99...
  • Page 78: Pcb Layout

    13、PCB LAYOUT 13-1 Image broad PCB LAYOUT PASTE MASK TOP Page 78 of 99...
  • Page 79 PASTE MASK BOTTOM Page 79 of 99...
  • Page 80: Tuner Board And Audio Board Pcb Layout

    13-2 TUNER board and AUDIO board PCB LAYOUT Page 80 of 99...
  • Page 81 BOTTOM Page 81 of 99...
  • Page 82: Schematic Diagram

    14、Schematic diagram Page 82 of 99...
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