Acer AT4202P Service Manual

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Summary of Contents:

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1 Trident EX52 compatibly model: AT4202P ACER SERVICE MANUAL ...

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2 THIS DOCUMENT IS FOR REPAIR SERVICE INFORMATION ONLY. DATE:2006/02/13 ...

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Page 3 of 99 CONTENTS 1、SPECIFICATION ..................................... ................ .................................... ..........…………...….. 4 1-1 General Sepecificaation..........................…….. ….......…�...

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Page 4 of 99 4、Trouble shooting chart.......................................... .................................. ....................…………..... 24 4-1 PANEL Trouble shooting…….………...................................... .......

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Page 5 of 99 11-1-2 Voltage value of IC necessary…………………………………………………………… 66 11-2 AUDIO and TUNER Board CHECK……………………………………………………………….. 66...

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Page 6 of 99 1、SPECIFICATION 1-1-1 General Specificaation Item Specification Screen size 42 inch plasma display panel Aspect 16:9 Display pixels 852 x 480 (WXGA) Effective display size 933mm x 533mm Number of color 16.7 million colors ...

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Page 7 of 99 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 2 Panel Max Contrast Ratio: 10000:1 View Angle: horizontal ≥160º/vertical ≥...

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Page 8 of 99 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. ...

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Page 9 of 99 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 ba...

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Page 10 of 99 source to “D-SUB” state. Then turn on the PC. ②.Audio Inputs P42S351 shall provide a 3.5 mm jack for the stereo audio signal associated with VGAinput. ③. Input Formats P42...

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Page 11 of 99 VGA INPUT DVI INPUT VGA VGA L R / DVI L R / 1-3-1-4 DVI input P42S351 shall accommodate a DVI type digital video source as specified in this section. ①. Video Inputs...

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Page 12 of 99 P42S351 shall support the following input format on its DVI input. 1-3-1-5 SCART Input SCART 1 SCART 2 SCART 3 We have three SCART signal input jacks . Scart Connector male Output connector Input conn...

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Page 13 of 99 PIN15 Red out PIN15 Red in PIN13 Red return PIN13 Red return PIN16 RGB status out PIN16 RGB status in PIN14 RGB status return PIN14 RGB status return PIN19 Sync (composite video) out PIN20 Sync (composite video) in ...

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Page 14 of 99 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 a...

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Page 15 of 99 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 Operati...

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Page 16 of 99 3、Operation 3-1 Operation of Remote Control Transmitter ...

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Page 17 of 99 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 en...

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Page 18 of 99 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”m...

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Page 19 of 99 Programme Edit: Press“►” or “Enter”to Display “To Set”,press “Enter”into edit. see the right picture.(Press Red button on remote control to delete. Press Green button to Copy. Press Yellow b...

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Page 20 of 99 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...

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Page 21 of 99 L50 ~ 0 ~ R50 Adjust Treble: Adjust the treble sound 0 ~ 100 Adjust Bass: Adjust the bass sound 0 ~ 100 Adjust TV Speaker: Switch Internal /External speaker Press Menu button to display the me...

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Page 22 of 99 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 butt...

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Page 23 of 99 3-3-8 Pip Menu INPUT: switch main signal among TV, AV1,AV2,AV3,AV4, S-Video, Com ponent1/ Component2 , VGA and. DVI. PIP:Switch the PIP function ON/OFF. (press the “SWAP”key under the “PIP”situation ,if the main pictu...

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Page 24 of 99 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...

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Page 25 of 99 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 ...

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Page 26 of 99 4-2-1-2 Check Image board procedure ...

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Page 27 of 99 4-2-2 Picture Display --Dynamic picture abnormal ...

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Page 28 of 99 4-2-3 DVI picture abnormal ...

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Page 29 of 99 4-2-4 Component picture abnormal ...

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Page 30 of 99 4-2-5 RGB Picture Abnormal ...

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Page 31 of 99 4-2-6 Video Picture Abnormal ...

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Page 32 of 99 4-2-7 DC Power Supply ...

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Page 33 of 99 4-3 TUNER&AUDIO BOARD FAULTS HANDLING 4-3-1 Check DC Power Supply 4-3-2 Tuner Faults Handling ...

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Page 34 of 99 4-3-3 Tuner&Audio Board Faults Handling ...

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Page 35 of 99 5、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: z Connect rear Video port of PDP with AV port of VG-...

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Page 36 of 99 balance page” and make Chroma 7100 x, y value into color temperature spec and Y value to maximum. ( Standard: x = 295±10, y = 305±10 ) 1.4 Set Pattern generator to 640X480(60) VGA output and 32 Gray scale pattern. 1.5 Used r...

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Page 37 of 99 maximum. ( Standard: x = 295±10, y = 305±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 balan...

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Page 38 of 99 “input serial no.:” promote. 6. Use Bar Readers to read the serial no to the program,then make sure the serial no you have read is the same as on the barcode. Then set the PDP to blue screen mode, press enter to start. 7. ...

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Page 39 of 99 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”; ...

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Page 40 of 99 5. Click the Prog key , it will show duologue window as picture 5 ,it start to write he soft ware , 6. 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 F...

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Page 41 of 99 8、Software Administer Block diagram 8-1 Main Block diagram (Kernel part) ...

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Page 42 of 99 8-2 SOURCE key Block diagram ProcessCommand tvAppSetOSD toeLoadOSDItems (DirectMenus) tdSetSysTimer toeResetMenuStatus tdClear...

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Page 43 of 99 8-3 MENU key Block diagram bEEpromOnline? _VK_MENU_ toeUserGetPersistentItemValue ProcessCommand bMainMenu=_TRUE_ toeUserGetPersis...

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Page 44 of 99 8-4 Mode Check Block diagram ...

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Page 45 of 99 8-5 SCART Key Choose Process ProcessCommand ...

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Page 46 of 99 Y N Y N ...

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Page 47 of 99 Y N Y N ...

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Page 48 of 99 N Y N ...

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Page 49 of 99 3 9、Block diagram & Explain 9-1 PDP block diagram and functions 9 NOTICE: 1.Panel P9Z1 TO PANEL CN8001 Power Input Cable. 2.Panel CN8004 TO MGP...

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Page 50 of 99 9-2 Image board block diagram and signal introduce 9-2-1 Image board block diagram RS232 DVI PC/RGB M16C Y Pb Pr Sil9011 SVP_EX52 LVDS L4 R3 R4 L3 DDR ROM SAA7117A 4Mx32 24bit PIP Decode BA7657F MainTV PipTV Audio DVI/PC P- P+V+...

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Page 51 of 99 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...

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Page 52 of 99 10、Waveform of signal 10-1 Waveform of input signal YCbCr:Timing946 Pattern946 color bar picture YCbCr:Timing946 Pattern946 color bar picture Y Luminance Signal Red Signal ...

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Page 53 of 99 YPBPR YPbPr:Timing955 Pattern946 color bar picture YPbPr:Timing955 Pattern946 color bar picture Y Luminance Signal Red Signal YPbPr:Timing955 Pattern946 Color bar picture Blue Signal ...

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Page 54 of 99 VIDEO Video:Timing946 Pattern946 Color bar picture Video:Timing949 Pattern936 Full White Picture S—VIDEO Video:Timing949 Pattern921 Gray Picture ...

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Page 55 of 99 10-2 Signal waveform in the image board ·VIDEO Video:Timing946 Pattern946 Color bar picture Video:Timing946 Pattern946 Color bar picture U 6 0 2 (Y/C separate)In pin88、Q602 E rank U602(Y/C separate)Ou...

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Page 56 of 99 Video:Timing 949 Pattern921 Gray Picture Video:Timing 949 Pattern921 Gray Picture U602(Y/C separate)Outpin84 U611 In pin73 U611 Decoder output 8bit digital signal ·S—VIDEO S-Video:Timing 946...

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Page 57 of 99 S-Video:Timing 949 Pattern936 Full White Picture S-Video:Timing 949 Pattern936 Full White Picture U600 pin5 Q600 E rank U600 pin18 U602 pin88 S-Video:Timing 949 Pattern936 Full White...

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Page 58 of 99 YCBCR YCbCr:Timing946 Pattern946 Color bar picture YCbCr:Timing 946 Pattern946 Color bar picture Y Signal --L618 R Signal—L619 YCbCr:Timing 946 Pattern946 Color bar pictur...

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Page 59 of 99 YCbCr:Timing 949 Pattern921 Gray Picture YCbCr:Timing 949、946 Pattern921、936、94 Gray Picture/ Color bar picture/ Full White Picture R/B—L619/L617 Signal Decoder output 8bit digital sig...

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Page 60 of 99 YPbPr:Timing 954 Pattern936 Full White Picture YPbPr:Timing 953 Pattern921 Gray Picture R/B Signal—L612/L610 Y Signal—L611 YPbPr:Timing 953 Pattern921 Gray Picture R/B Signal—L612/...

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Page 61 of 99 RGB:Timing4 Pattern101 Pane Picture RGB:Timing4 Pattern101 Pane Picture B—FL702 Waveform H—FL704 Waveform RGB:Timing4 Pattern101 Pane Picture RGB::Tim...

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Page 62 of 99 RGB:Timing172 Pattern105 Window Picture RGB:Timing172 Pattern105 Window Picture R—FL700 Waveform G—FL701 Waveform RGB:Timing172 Pattern105 Window Picture RGB:Tim...

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Page 63 of 99 RGB:Timing4 Pattern27 Color bar picture RGB:Timing4 Pattern27 Color bar picture G—FL701 Waveform B—FL702 Waveform RGB:Timing4 Pattern27 Color bar picture ...

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Page 64 of 99 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 identif...

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Page 65 of 99 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 ...

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Page 66 of 99 D12V U107(AZ1117) Pin 3 U605(TA2024) Pin24.25.29.30.33 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,5p...

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Page 67 of 99 12、Mechanical Introduction 12-1 PDP Internal view Image Borad Tunner Board Y-main SMPS X-main Y-buffe (upper) Y-buffe (lower) Logic F buffer Logic E buffer ...

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...

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Page 69 of 99 12-2 Mechanical of cabinet front disassembly ...

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Page 70 of 99 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...

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Page 71 of 99 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 t...

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Page 72 of 99 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 ...

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Page 73 of 99 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 rom...

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Page 74 of 99 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 ...

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Page 75 of 99 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 th...

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Page 76 of 99 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...

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Page 77 of 99 12-4 Panel Wiring diagram ...

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Page 78 of 99 13、PCB LAYOUT 13-1 Image broad PCB LAYOUT PASTE MASK TOP ...

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Page 79 of 99 PASTE MASK BOTTOM ...

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Page 80 of 99 13-2 TUNER board and AUDIO board PCB LAYOUT TOP ...

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Page 81 of 99 BOTTOM ...

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Page 82 of 99 14、Schematic diagram ...

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