hit counter script
Toshiba TDP-ST20E Service Manual
  1. Manuals
  2. Brands
  3. Toshiba Manuals
  4. Projector
  5. TDP-ST20E
  6. Service manual
Toshiba TDP-ST20E Service Manual

Toshiba TDP-ST20E Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
FILE NO. 330-200712GR
Rev.01
SERVICE MANUAL
DLP PROJECTOR
TDP-ST20E,TDP-ST20B
The above models are classified as green product (s) (*1), as indicated by the underlined serial number (s).
This Service Manual describes replacement parts for green product (s). When repairing any green product (s), use
the parts described in this manual and lead-free solder (*2).
For (*1) and (*2) , see the next page.
© TOSHIBA CORPORATION
Published in Japan, August 2007 GREEN

Advertisement

Table of Contents
loading

Related Manuals for Toshiba TDP-ST20E

Summary of Contents for Toshiba TDP-ST20E

  • Page 1 This Service Manual describes replacement parts for green product (s). When repairing any green product (s), use the parts described in this manual and lead-free solder (*2). For (*1) and (*2) , see the next page. © TOSHIBA CORPORATION Published in Japan, August 2007 GREEN...
  • Page 2 Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any marketing of new products containing the restricted substances. Increasing attention is given to issues related to the global environmental. Toshiba Corporation recognizes environmental protection as a key management tasks, and is doing its utmost to enhance and improve the quality and scope of its environmental activities.

  • Page 3: Table Of Contents

    Contents Table of Contents Chapter 1 Specifications Using the Menus Names of the Terminals on the Rear Panel Name of each part on the main unit Name of each part on the control panel and remote control List of Supported Signals Chapter 2 Replaceable Part Hierarchy Required Tools...

  • Page 4: Specifications

    Chapter 1 Chapter 1 Specifications...
  • Page 5 Chapter 1 Specifications (Continued)

  • Page 6: Using The Menus

    Chapter 1 Using the Menus...

  • Page 7: Names Of The Terminals On The Rear Panel

    Chapter 1 Names of the Terminals on the Rear Panel...

  • Page 8: Name Of Each Part On The Main Unit

    Chapter 1 Names of each part on the main unit...

  • Page 9: Name Of Each Part On The Control Panel And Remote Control

    Chapter 1 Names of each part on the control panel and remote control...

  • Page 10: List Of Supported Signals

    Chapter 1 List of Supported Signals...
  • Page 11 Chapter 1...

  • Page 12: Replaceable Part Hierarchy

    Chapter 2 Chapter 2 Replaceable Part Hierarchy Replaceable Part Hierarchy The flow chart below shows what parts must be removed to access each replaceable part in the projector. The parts on the first level (Ex.Lamp cover) are accessible without removing any other parts. The move levels down that a part is, the more parts you need to remove in order to access it.

  • Page 13: Required Tools

    Chapter 2 Required Tools Item Photo Driver bit ( ) No 2 Box driver M3 Driver bit ( ) No 0 Torque driver bit ( ) No 2 Nippers Cutting pliers...

  • Page 14: Parts Replacement

    Chapter 2 Parts Replacement 1.Lamp Figure Explanation Remove two lamp cover screws. Outer lamp cover is removed. Remove a screw. Inner lamp cover is removed. Remove three lamp screws. Pull up the handle, and push the tab to remove the lamp. Lamp is pulled out.
  • Page 15 Chapter 2 2.Front Cover Step Figure Explanation Remove a screw at the bottom. Push these point, you will take off easy. front cover is removed. Front cover and Senser PCB are removed.
  • Page 16 Chapter 2 3.Side Cover Step Figure Explanation There are two small holes. Push the hook with minus driver. Side Cover R is removed. [Note] Side Cover R is : There are 4 projections on the panel. There are two small holes. Push the hook with minus driver.
  • Page 17 Chapter 2 4.Top Cover Step Figure Explanation Remove three screws at the rear. Remove two screws at the right side. Remove a screw at the left side. Open the Top cover. [Note] Be careful of connection cabels. Top cover is removed. Door switch is removed.
  • Page 18 Chapter 2 5.Main Board Step Figure Explanation All the connectors on a main board unit are removed. Remove seven screws. Main and AV PCBoard are removed with rear panel. Remove a screw at the rear panel. Rear panel is removed. Remove two screws on the main PCB.
  • Page 19 Chapter 2 6.Balast Unit Step Figure Explanation Remove four screws. Remove four plastic rivets. Balast is removed.
  • Page 20 Chapter 2 7.Main Power Unit Step Figure Explanation Remove two screws. Main Power Unit is removed. 8.Exhaust Fan Remove a screw. Remocon Reciever is removed. Exhaust Fan is removed.
  • Page 21 Chapter 2 9.Intake Fan. Remove a screw. Intake Fan is removed. 10.Thermal Switch Step Figure Explanation Remove two screws. Thermal Switch is removed.
  • Page 22 Chapter 2 11.Optical Block Step Figure Explanation Remove four screws. Optical Block is removed. Remove two screws. Lamp Fan is removed. 2-11...

  • Page 23: Singows 2000

    Chapter 3 Chapter 3 SINGOWS 2000 Install the Software on the Computer The software you download is bundled into one .MSI file. Double-click the file to install the signal generating software. The Install Wizard appears,ready to begin the install process. Click the next button.
  • Page 24 Chapter 3 The Select Installation Folder dialog box appears. Navigate to the location where you stored the software files. Click the next button. The confirm Installation dialog box appears. Click the next button.
  • Page 25 Chapter 3 The Installing software dialog box appears. The Installation Complete dialog box appears. Click the close button.
  • Page 26 Chapter 3 Startup the Software Open Windows Exploler, navigate to the location where you stored the files, Then double click the SINGOWS2000.EXE. Moreover, even if it chooses the shortcut of the All programs of start, it can startup .

  • Page 27: Firmware Upgrade

    Chapter 4 Chapter 4 Firmware Upgrade Install the Software on the Computer The software you download is bundled into setup.exe file. Double-click the file to install the software. The Install Wizard appears, ready to begin the install process. Click the next button.
  • Page 28 Chapter 4 Read the License Agreement. Choose the radio button of “I accept and agree to be…..” Click the next button. Click the next button.
  • Page 29 Chapter 4 Click the next button. Click the next button.
  • Page 30 Chapter 4 Click the finish button. Click the Yes button to reboot.
  • Page 31 Chapter 4 Upgrade the software Connect the control cable (RS232C female – female) to the control terminal on the projector. Then plug the RS232C connector on the other end of the cable into a RS232C port on the computer. Open Windows Explorer navigate to the location where you stored the FlashDeviceParameters.txt file.
  • Page 32 Chapter 4 Double click (Execute) the icon of DLP Composer(TM) Lite 7.2. The DLP Composer(TM) Lite 7.2 dialog box appears...
  • Page 33 Chapter 4 Click Edit and Preferences. Select Communications and Serial Port. Select COM1 (Select the port which you use).
  • Page 34 Chapter 4 Click Configure button and change the “Timeouts” Read and Write values from 2000 to 10000. Click OK button. Choose Flash Loader...
  • Page 35 Chapter 4 Change the value “Skip Boot Loader Area” from 16KB to 32KB. As for this operation, the data of “User Logo” is erased. < Important matter > If the value of “Skip Boot Loader Area” is not changed, the projector will not operate normally.
  • Page 36 Chapter 4 “Enter range of Image Data to be updated [in Hex]” is clicked when holding the data of “User Logo”. And enter the values, Start: 0x8000 End : 0X005FFFFF Next operation is the same. 4-10...
  • Page 37 Chapter 4 Click Browse button to select the firmware (*. img file) Press and hold the projector’s [Service] two keys. (TDP-ST20) Press and hold the projector’s [Keystone] and [Auto set] keys. (TDP-EX20/EW25) Then plug in the power cord and turn on power switch. When the projector enters the firmware upgrade mode, [LAMP], [ON/Standby] and [TEMP] LED blinks RED in order.
  • Page 38 Chapter 4 If FlashDeviceParameters.txt is not copied, the following dialog box will appear. When a computer begins downloading the upgrade files to the projector, the following status bar progresses. When RS232C terminal of PC is used, the firmware upgrade will take about 20 minutes. 4-12...
  • Page 39 Chapter 4 When the upgrade finishes normally, the following Download Complete message appears. Click X button to finish. 4-13...
  • Page 40 Chapter 4 Confirm the software upgrade 1. Power up the projector. 2. On the remote controller of projector, press the “MENU” key to display the menus. 3. Press button Right or Left arrow to highlight “Setting display”. 4. The “Setting display” dialog box display the software version. These should match the upgrade version you downloaded.

  • Page 41: Wiring Diagram

    Chapter 5 Chapter 5 Wiring Diagram...

  • Page 42: Block Diagram

    Chapter 5 Block Diagram BLOCK DIAGRAM 1/2...
  • Page 43 Chapter 5 Block Diagram 2/2...

  • Page 44: Led Display

    Chapter 6 Chapter 6 LED Display LED Display (Problems Shown on LED Indicator Combination) <Notes> When each error occurs, after about one minute of abnormal display, the projector turns to the standby state waiting for internal cool down. [ L ] : LAMP, [ O ] : ON/Standby, [ T ] : TEMP FAN1 ->...

  • Page 45: Troubleshooting

    Chapter 6 Troubleshooting Y ou use this section to diagnose problems with the projector. Choose the problem you are trying to diagnose from the list below. The Power, Image and Audio sections provide a variety of symptoms, while the other includes only one page. 1.
  • Page 46 Chapter 6 No lamp Check the error code log at service mode When there is the error code, refer to the LED error List. When the error code is Lamp error (No.1), remove the lamp to see if it looks good. There should be no ruptures, no bulges, and no cracks in the reflector.
  • Page 47 Chapter 6 Troubleshooting Image Problems The image is not correct. The projector starts and runs normally. The menus are accessible. The lamp is lit. Upgrade the software to the latest version or reinstall the projector software. Confirm that all image adjustments are set to factory defaults Confirm that the cable and source signal Are good.
  • Page 48 Chapter 6 Dim image Substitute known good lamp. Replace the lamp. Image brighter? Substitute known good Main board. Image brighter? Replace the Main Board Replace the optical engine Bad or missing tint or color. Distorted image, excess noise, rolling, torn, frozen,” Plaid” image, repeated single image or shifted image. Make sure cables are good.
  • Page 49 Chapter 6 Troubleshooting Audio Problems No audio or distored audio from the speaker. Make sure cables are good. Problem resolved Is audio OK? What is the problem? No audio from the speaker Audio is distoyed No audio from the speaker. Check the speaker resistance.
  • Page 50 Chapter 6 Troubleshooting Remote Controller Problems Infrared Remote Problem Install known good batteries in the remote controller. Does the remote work? Problem resolved Use a known good remote with the projector Does the remote work? Problem resolved Replace the Main board Troubleshooting Keypad Problems Keypad does not respond to key presses.
  • Page 51 Chapter 6 Troubleshooting Menu Problems Menu does not appear on screen. Startup screen and other images appear normal. Try pressing the Menu button on both the remote and keypad. Does the menu appear? If the keypad works and If the remote works and the remote doesn’t, go to Troubleshooting the keypad doesn’t, go to remote control problems...

  • Page 52: Operation Of Power Supply

    Chapter 6 Operation of Power Supply (APS-M675) The APS-M675 power supply circuit is shown as below. (Fig.1) Output (Inrush current Suppression Input DC/DC Secondary circuit) Line Switching Rectifier Power Factor Input Filter Converter Circuit Control Circuit Lamp Feedback Output Control Fig.
  • Page 53 Chapter 6 B) Reduce input harmonic current Normally switching power supply circuit is capacitor input type. Input current of this power supply has many harmonics, because of the conduction angle of input current is narrow. Therefore, an input current is distorted and this is a cause of low power factor. Main purpose of Power Factor Correction Control Circuit is reducing input harmonic current.
  • Page 54 Chapter 6 d) Over Voltage Limit Output voltage is detected by winding voltage of B1-B2 (T101). This voltage is same as Vcc of IC101 (pin 6). If output voltage becomes over voltage condition, pin 8 of IC101 to be pulled up through zener diode ZD104, then power supply is shut down .(Latch) e) Over Heat Protection Over heat protection is detected Soldering parts temperature of Q1,Q2 (MC102) by TH102.
  • Page 55 Chapter 6 6-12...
  • Page 56 Chapter 6 6-13...

  • Page 57: Electrical Adjustment

    Chapter 7 Chapter 7 Electrical Adjustment Preparation < Test equipment > 1) Personal computer (Windows PC, OS: Windows 98SE, ME, 2000, XP) 2) Signal generating software SINGOWS2000.msi (Installer) and V_Ramp.bmp (Bitmap file) 3) Cables RGB Cable 4) Remote controller < For connection and setting of Personal computer > 1) Connection of personal computer Connect the PC to computer input as shown in following Fig.1 2) Set the screen resolution and refresh rate to XGA (1024x768) 60Hertz.
  • Page 58 Chapter 7 Adjustment Points vs Part Replaced The table below shows you the items to be adjusted according to the type of part you replaced. Adjustment Lighting Altitude Parts Delay Contrast Position × Main Board × × × Optical Engine ×...
  • Page 59 Chapter 7 Projector Setup Plug in the power cord, turn on main power switch and the power of the projector. How to enter to the Service Mode (TDP-ST20) Press the buttons of remote controller, [ENTER] 5 times, [RETURN] 5 times, [ENTER] 3 times and [RETURN] 3 times. When the projector enters to the Service Mode, the buzzer beeps for 3 sec.
  • Page 60 Chapter 7 < C/W index delay > Press the buttons of remote controller, [ENTER] 12 times and [RETURN] 4 times. Then, the following display appears. Select C/W index delay by pressing [Down] button. Start the signal generating software (SINGOWS2000.exe), the following signal pattern appears and click [PIC] button.
  • Page 61 Chapter 7 The following Picture dialog box appears. Select the downloaded file of V_Ramp.bmp. Click [ENTRY] button. Double click the V_Ramp window, the following V-Ramp signal appears.
  • Page 62 Chapter 7 Adjust the C/W index delay by pressing [Left] or [Right] button <STEP 1> Check on red and blue. Read the value when the horizontal stripes (EX. Fig.2) is minimized and the value is referred to "A.". < Fig.2 > <STEP 2>...
  • Page 63 Chapter 7 < Sub contrast > Right - click to display the following color pallets. Click [White] button. Note: Move the mouse cursor out of a screen to avoid the error. Select Sub contrast by pressing [Up] button. Press [Enter] button of remote controller. Press the buttons of remote controller, [ENTER] 12 times and [RETURN] 4 times.
  • Page 64 Chapter 7 < Altitude > Select Altitude by pressing [Down] button and proper value by pressing the [Left] or [Right] button of remote controller. Factory setting is 0. The value 1 is more than 500m (1,640ft) and under 1,000m (3,281ft). The value 2 is more than 1,000m (3,281ft) and under 1,500m (4,921ft).

  • Page 65: Functional Test

    Make sure the video player has an S-video Out port and cables. The player should also have a Composite video port (RCA). Toshiba strongly suggests you use a DVD player to test the Video quality. DVD players reproduce colors better and project Sharper images. The least preferable is a VCR.If you must use a VCR, make sure you use a commercially produces recoding not one recorded from a broadcast source.
  • Page 66 Chapter 8 Perform the following tests Test Verification Verify that the proper splash (logo) screen Appears. Power Up Connect AC power, and turn the unit on. Verify image quality. Cosmetics and mechanicals Verify that the elevator and leveling foot Are functional. Adjust the projector so that the image is Square.
  • Page 67 Chapter 8 Test Verification Focus Verify that the image synchronizes properly through the computer 1 input. SINGOWS2000 Cross Hatch image. Verify that image focuses through the full zoom range. Verify there are no problems. Color Wheel Index Delay Verify that the image synchronizes properly through the computer 1 input. SINGOWS2000 Color bar image.
  • Page 68 Chapter 8 Test Verification LCD Images Verify that each image synchronizes properly through the computer 1 input. SINGOWS2000 White image (Level 100%) SINGOWS2000 Black image (Level 0%) SINGOWS2000 SMPTE image Verify there are no problems System Reset Verify that the image synchronizes after system reset. On the keypad, press the Menu key.

  • Page 69: Exploded View

    Chapter 9 Chapter 9 Spare Parts List Exploded View...
  • Page 70 Chapter Exploded View (E500:Optical Block)
  • Page 71 Chapter Other Parts U002 Door Switch U003 Lens Cover U004 Intake Sensor U005 Exhaust Sensor U006 Remocon Reciever MJ02 Thermal Switch...
  • Page 72 Chapter Spare parts list (TDP-ST20) GREEN Part No No Location Description 75009012 A100 COVER, TOP 70391261 A103 SCREW A110 BRACKET, DOOR SW 75009000 75009001 A210 COVER, LAMP COVER ST20 75009018 A240 PANEL ASSY, FRONT ST20 75009003 A250 PANEL, SIDE L ST20 75009004 A260 PANEL, SIDE R ST20...
  • Page 73 Chapter Part No No Location Description IC, , G751-2RDF TEMPERATURE SENSOR AND 75004147 IC1200 THERMAL WATCHDOG 75002121 47 IC122 IC, SCHMITT INVERTER IC, G751-2RDF TEMPERATURE SENSOR AND 75004147 IC123 THERMAL WATCHDOG 49 IC124 IC, TC7SH32FU(TE85LF) 75001247 50 IC127 75001245 IC, TC7SH08FU(TE85L,F) 75001245 51 IC129 IC, TC7SH08FU(TE85L,F)
  • Page 74 OSHIBA CORPORA ION - , SHIBAURA -CHOME, MINATO-KU, TOKYO 05-800 , JAPAN...

This manual is also suitable for:

Tdp-st20b

Table of Contents