Toshiba TLPB2U Service Manual
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Toshiba TLPB2U Service Manual

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FILE NO. 330-200002
SERVICE MANUAL
3LCD DATA PROJECTOR
TLPB2U, TLPB2E
TXPB2, TLPB2C
TLPB2
PRINTED IN JAPAN, Jul., 2000 F

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  • Page 1 FILE NO. 330-200002 SERVICE MANUAL 3LCD DATA PROJECTOR TLPB2U, TLPB2E TXPB2, TLPB2C TLPB2 PRINTED IN JAPAN, Jul., 2000 F...
  • Page 2 SAFETY PRECAUTION WARNING: Service should not be attempted by anyone unfamiliar with the necessary precautions on this projector. The following are the necessary precautions to be observed before servicing this chassis. 1 . An isolation Transformer should be connected in the power line between the projector and the AC Iine before any service is performed on the projector.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SAFETY PRECAUTIONS…………………..…….. I IMPORTANT PRECAUTIONS……………..…….. I IMPORTANT SAFETY INSTRUCTION……….… II SECTION 1 PART REPLACEMENT AND ADJUSTMENT PROCEDURES 1. LOCATION OF MAIN PARTS…………………………1-1 3-8. Optical Engine……………………………………..1-14 2. LOCATION OF PC BOARD…………………………1-1 3-9. LCD Panel………………………………………….1-15 3. REPLACEMENT OF MECHANICAL PARTS……...1-2 3-10.

  • Page 4: Safety Precautions

    The exclamation point within an WARNING: Changes or modifications made to this equipment, not expressly approved by equilateral triangle is intended to Toshiba, or parties authorized by Toshiba, could void the user's authority to operate alert the user to the presence of the equipment.

  • Page 5: Important Safety Instruction

    IMPORTANT SAFETY INSTRUCTIONS CAUTION: PLEASE READ AND OBSERVE 1. Read Owner's Manual 3. Source of Light ALLWARNINGS AND After unpacking this product, read the Do not look into the lens while the lamp INSTRUCTIONS GIVEN IN THIS owner's manual carefully, and follow all is on.
  • Page 6 IMPORTANT SAFETY INSTRUCTIONS Object and Liquid Entry 13. Stack Inhibited Accessories Never push objects of any kind into this Do not stack other equipment on this Do not place this product on an unstable product through openings as they may product or do not place this product on the cart, stand, tripod, bracket, or table.

  • Page 7: Part Replacement And Adjustment Procedures

    SECTION1 PART REPLACEMENT AND ADJUSTMENT PROCEDURES 1. LOCATION OF MAIN PARTS P800:POWER SUPPLY LCD BLOCK P850:LAMP DRIVER LAMP HOUSING E201:OPTICAL ENGINE E201A:PROJECTION LENS Z100:INTAKE FAN 2. LOCATION OF PC BOARD E101:MAIN PC BOARD E102:AUDIO PC BOARD E103:FAN PC BOARD E104:REM PC BOARD TLPB2 Service Manual Rev.

  • Page 8: Replacement Of Mechanical Parts

    CAUTIONS BEFORE SERVICING Electronic parts are susceptible to static electricity and may easily be damaged, so do not forget to take proper grounding treatment as required. Many screws are used inside the unit. To prevent missing, dropping, etc. of the screws, always use a magnetized screwdriver in servicing.

  • Page 9: Top Cover

    3-2. Top Cover Step Figure Explanation [Right Side] Remove four screws (M2.6 x 6). Screw : type [M-1] [Left Side] Remove three screws (M2.6 x 6). Screw : type [M-1] [Bottom] Remove one screw (M2.6 x 6). Screw : type [M-1] [Front] Remove two screws (M2 x 4).
  • Page 10 Push cabinet upward to remove back cover. Push down on the back cover to remove. [Note] The back cover is fixed with the adhesion tape. Remove the top cover by lifting up on the left side of the cabinet and around the video connector. TLPB2 Service Manual Rev.

  • Page 11: Main Pc Board

    3-3. Main PC Board Step Figure Explanation Remove all cables and connectors. Remove five screws (M2.6 x 6). Screw : type [M-1] [Note] There is no screw in the hole shown for the main PC board. TLPB2 Service Manual Rev. 2.0...
  • Page 12 3-4. Lamp Housing and Exhaust Fan Step Figure Explanation Remove two screws that secure the lamp connector (M2.6 x 6). Screw : type [M-1] Pull connector upward to remove. Remove three screws that secure the lamp housing and fan to the cabinet (M2.6 x 6). Screw : type [M-3] Remove one screw that secures the lamp housing to the optical engine (M2.6 x 6).
  • Page 13 The exhaust fan module slides upward [Note] The exhaust fan module is fixed in the rail. rail [Note] Separate the fan module from the lamp housing. rail Remove two screws (M3 x 20). Screw : type [M-6] Fan holder and the exhaust fan are separated. TLPB2 Service Manual Rev.
  • Page 14 3-5. Power Supply Unit and Lamp Driver Unit Step Figure Explanation Cut the cable tie with wire cutters. Loosen the cable clamp. Remove this screw (M2.6 x 6). Screw : type [M-3] Remove this screw (M2.6 x 6). Screw : type [M-3] Slide the power supply unit toward the front and lift up.

  • Page 15: Power Supply Unit

    Remove the EMC shield cover. The EMC shield cover is wrapped around the power supply unit. Release four PC mounts by using tweezers. Power supply unit and lamp driver are separated. Remove the connector, which connects lamp driver with power supply unit. TLPB2 Service Manual Rev.
  • Page 16 Remove two screws (M3 x 14). Screw : type [M-7] Power supply unit and exhaust fan are separated. [Note] Insert shield case in the clearance between the unit and aluminum case. [Note] Align the tab of the aluminum case in the hole of the shield case.
  • Page 17 [Note] Insert the tabs from the power unit into the holder of the cabinet. Holder Holder Remove two screws. Remove aluminum plate. Be careful to lay an insulation seat. 1-11 TLPB2 Service Manual Rev. 2.0...

  • Page 18: Intake Fan Assembly

    3-6. Intake Fan Step Figure Explanation Remove the screw that mounts the fan to the cabinet (M2.6 x 6). Screw : type [M-3] Remove two screws (M3 x 30). Screw : type [M-8] The fan PC board is between the intake fan and the dust filter holder.

  • Page 19: Audio Pc Board

    3-7. Audio PC Board Step Figure Explanation Remove four screws to remove the audio PC board (M2.6 x 6). Screw : type [M-3] [Note] Place the two cable clamp on the connector side. [Note] Switch The safety interlock switch is pushed when the lamp cover is replaced.

  • Page 20: Optical Engine

    3-8. Optical Engine Step Figure Explanation Remove four screws labeled 1 through 4 to remove the optical engine (M4 x 13). 1 1 1 1 Screw : type [M-5] #2 is near the lens. 2 2 2 2 3 3 3 3 #3 is near the power supply on the right side of the unit.

  • Page 21: Lcd Panel

    3-9. LCD PANEL Step Figure Explanation Remove three screws (M3 x 6) . A A A A Screw : type [E-1] [Note] Tear off adhesive tape when you remove the screw of A. Separate main frame and sub frame. Remove three screws (M2.5 x 8). Screw : type [E-2] Separate prism block from main frame.
  • Page 22 Remove four screws (M2.6 x 6). Screw : type [E-3] Separate the LCD panel and the mask and the bracket [Note] Leave the mask because it is used again. (yellow marked) The LCD Panel and four screws are not used. Remove four screws (M2 x 4).
  • Page 23 LCD PANEL HOLDER MODULE ASSEMBLY Install a new panel with four screws. [Note] There are two kinds of types of the screw. A Side Screw : type [E-5] B Side Screw : type [E-6] Four screws are to do temporary tightening. Tighten a new bracket with four screws (M2 x 4).
  • Page 24 Install the LCD panel holder module made by step 9. Fix the LCD panel holder module on the bracket with two screws (M2x2). Screw : type [ E-7] Fix a prism block on the main frame. [Note] Panel holder service kit ( E205S : 23430870 ) 1-18 TLPB2 Service Manual Rev.

  • Page 25: Multi Pbs

    3-10. MULTI-PBS (Polarizing Beam Splitter) Step Figure Explanation Remove four screws (M2.5 x 6) . Screw : type [E-8] Lift the Multi-PBS with tweezers a little. Remove the Multi-PBS. Lamp [Note] Prism Be careful in the direction which it is installed in. 1-19 TLPB2 Service Manual Rev.
  • Page 26 Insert the Multi-PBS. Put a metal fitting in the gap. 3-11. Optical Engine Cooling FAN Remove four screws (M2.5 x 16) . Screw : type [E-9] 1-20 TLPB2 Service Manual Rev. 2.0...
  • Page 27 3-12. Polarized Plate Step Figure Explanation Lift a stopper by using the tweezers. Remove a stopper. Remove a polarized plate. Panel Side [Note] Be careful in the direction which it is installed in. Be careful of the color, color have to match with LCD panel. Color Marking 1-21...

  • Page 28: Screws For Mechanical Parts

    3-13. Screws for Mechanical Parts TYPE FORM SIZE LOCATION Main PCB(5), Lamp house(1), 2.6 x 6 Lamp cable connector(1), Top cover(8), Lamp cover(2) 2 x 4 Front cover(2) Audio PCB(4), Rem PCB(1), 2.6 x 6 Intake FAN module(1), Lamp house(1), Exhaust FAN module(2) 3 x 8 Thermo-sensor(1), Wire holder(1) 3 x 12...

  • Page 29: Screws For Optical Engine

    3-14. Screws for Optical Engine TYPE FORM SIZE LOCATION M3 x 6 Prism and Main Frame (3) M2.5 x 8 Main Frame and Sub Frame (3) LCD PANEL (4) M2.5 x 6 * Not used after remove old panel M2 x 4 Bracket (4) LCD Panel (connector side) (2) M2.5 x 6...

  • Page 30: Optical Adjustment

    4. OPTICAL ADJUSTMENT 4-1. PREPARATION < Test Equipments and Test Jigs > ･ Personal computer (Windows P/C, OS:windows95/98) ･ Adjustment software SINGO98.EXE ･ RGB cable ･ A precise screwdriver (minus) ･ Hexagon Wrench (include service kit) ･ Extension cable (Flat cable) Include the Service Kit for TLP65 series M100S : 23588552 (10p cable)
  • Page 31 (4) Test Pattern Set-up (5) Focus Adjustment Connect a computer with RGB cable, and start the Pattern generating software (SINGO98.exe). When a screw (A) is loosened, the panel moves to front and back, and focus can be adjusted. Click cross hatch button. Click [R] and [B] button to display G-Cross Hatch.
  • Page 32 4-2. Adjustment of Focus (ex. Blue panel exchange) Step Figure Explanation TEST PATTERN : Green Cross Hatch Adjust focus by projection Lens. TEST PATTERN : Blue Cross Hatch Move a panel in front and back, and adjust a focus. Tighten two screws little by little. Tighten two screws, when you reached best focus point.
  • Page 33 TEST PATTERN : Blue and Green Cross Hatch Move a panel in left, right, up and down, and adjust a convergence. Tighten four screws. 1-27 TLPB2 Service Manual Rev. 2.0...

  • Page 34: Electrical Adjustment

    5. ELECTRICAL ADJUSTMENT 5-1. PREPARATION < Test Equipment and Jigs > (2) Adjustment software ･ Oscilloscope Electrical adjustment is carried out using the ･ Digital voltmeter adjustment software. When the software is started, a ･ Adjustment software TLPB2S.EXE screen like the following image (Fig. 1-4-2) appears. ･...
  • Page 35 (3) TEST POINTS TP-R TP-R TP-G TP-G TP-B TP-B 1-29 TLPB2 Service Manual Rev. 2.0...
  • Page 36 5-2. SHADING CONPENSATION (When the Main PC board will be replaced.) Step Figure Explanation Press the [Shading Compensation] button. Press [Download] button. The current shading data will be read form projector and be saved this data to Personal Computer. After replacing the Main PC Board, press [Upload] button. The shading data (in the old PCB) will be written to the projector.
  • Page 37 5-3. ELECTRICAL ADJUSTMENT (When the Main PC board or the LCD panels are replaced.) Step Figure Explanation Press the [Electrical Adjustment] button. Choose the menu which is suitable for parts replaced. (A) When you changed the LCD panel only, then select the [LCD Panel] button. ( 5-3-1 ) (B) When you changed the Main PC Board only, then select the [Main PC Board] button.
  • Page 38 5-3-1-2. Shading Compensation (1) Move scroll bar, and choose the similar pattern which being projected from the projector. (2) Press [Write] button, then it will be written the selected data to the projector. (3) After writing shading data (when a progress bar is disappeared), press [Next] button.
  • Page 39 5-3-1-4. Final Inspection (1) Click the [Setup of Shipping] button, and set the default. [Note] If you click the [Setup of Shipping], then “Total working time”, “Lamp timer” and “User memory” are initialized. (2) Click the [Version Check] button, and check the “Software version”...
  • Page 40 5-3-2. When a Main PCB was replaced. (Same as Main PCB and LCD are replaced) 5-3-2-1. Compensation of Keystone data (at low temperature) Input Signal : RGB 15 step signal (1) Set the projector horizontally, and click the [KC0] button. (2) Set the projector to a +30 degree angle, and click the [KC1] button.
  • Page 41 (1) Monitor the waveform at the test point “TP-G”. (2) Click the [WMB] button and adjust to the specified level. (3) Check the voltage at the test points “TP-R” and “TP-B”. (4) Click [Next] button. [Note] “G” and “B” levels also change when the [WMB] adjustment is performed.
  • Page 42 (1) Monitor the waveform at test point “TP-B”. (2) Click the [W05] button and adjust to the specified level. (3) Click [Next] button. [Note] When you select this adjustment, the software will force video input mode. Please ensure that you have a video pattern generator connected.
  • Page 43 5-3-2-3. Shading Compensation (1) Choose the similar pattern which being projected from the projector. (2) Press [Write] button, then it will be written the selected data to the projector. (3) After writing shading data (when a progress bar is disappeared), press [Next] button. 5-3-2-4.
  • Page 44 5-3-2-5. Adjustment of Color Temperature Input Signal : RGB 50% White (1) Click [W03] and/or [W05] buttons, and adjust screen until it becomes a natural gray. (2) Click [Next] button. Input Signal : RGB 50% White (1) Click [W03] and/or [W05] buttons, and adjust screen until it becomes a natural gray.

  • Page 45: Servicing Diagrams

    SECTION2 SERVICING DIAGRAMS 1. TROUBLE SHOOTING CAUSE CHECK POINT CHEK ITEM JUDGE (NG) Standby voltage Power supply is NG. Flat cable of Power supply (disconnect PJ401) (See page 2-3) (OK) Power is not on Check next step. (NG) PJ401 Standby voltage Main PCB is NG, (connect PJ401) or any cable connection is NG.
  • Page 46 USAGE of SERVICE SOFTWARE (1) Start service software(TLPB2S.EXE). Click [Error List] button (2) Reading of the error list. Click [Read] button (3) The point of view of the indication. The number of times which occurred in the past. The error which occurred recently. TLPB2 Service Manual Rev.
  • Page 47 2. CONNECTOR PIN ASSIGNMENT PJ1 (MAIN) ‹—› PJ604 (AUDIO) PJ503 (MAIN) ‹—› Exhaust FAN (Lamp) STANDBY_13V +13V (AUDIO) FAN Power +13V FAN Drive 1V to +13V (Pulse) STANDBY_6V PJ504 (MAIN) ‹—› Cooling FAN (Optical Engine) FAN Power +13V C_SDA (5V) 0V to +5V (Pulse) GND (FAN) C_SCL (5V)
  • Page 48 TEMP Standby-power is not on. Unplug the power cord and contact > There’s a problem with the power unit or your TOSHIBA dealer. system microcomputer. Power is not on. Unplug the power cord and contact > There’s a problem with the system your TOSHIBA dealer.

  • Page 49: Block Diagram

    4 . B L O C K D I A G R A M 4.BLOCK DIAGRAM P J 6 0 2 P J 6 0 4 P J 8 5 1 L C D - R L C D - B P J 9 5 1 P J 4 5 1 2 - 5...
  • Page 50 TLPB2 Service Manual Rev. 2.0...

  • Page 51: Parts List

    SECTION3 PARTS LIST SAFETY PRECAUTION The parts identified by ! mark are critical for safety. Replace only with part number specified. The mounting position of replacement is to be identical with originals. The substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create shock, fire or other hazards.

  • Page 52: Packing Assembly

    3-2. Packing Assembly Y260: 23448590 A410: 23064229 A403: 23946039 Y404: 23945095 A400: 23064228 Y401: 23564310 (B2U) 23564311 (B2E) [Note] Refer to page 3-8 for parts description. TLPB2 Service Manual Rev. 2.0...
  • Page 53 3-3. Accessories PARTS NO PARTS NO 23368676 23563936 Y106 Y200 Din8P-Dsub CD-ROM (for B2U) 23563933 23368752 (for B2E) Y294 Audio Cable Y201 23563934 (for B2C, TXP) 23563989 23368733 (for B2E) Y105 Y207 PC Audio Cable 23563935 Y210 23589124 Y211 23589125 23368571 Y212 23589126...

  • Page 54: Chassis Assembly

    3-4. Chassis Assembly A100: 23540043 Top Cover B200 Z101: 23125883 Fan Motor A210: 23540058 Front Cover P100: 23344455 Switch P200: 23351159 Speaker B180 B100: 23411361 Bottom cover Z100: 23125881 Fan motor B153 A220: 23540056 B180 Cover Assy, Front A242: 23466910 Air Filter, Mesh A241: 23466909 Air Filter, Sponge...

  • Page 55: Pc Board And Power Unit Assembly

    3-5. PC Board and Power Unit Assembly E101: 23771027 P.C.B., Main E102: 23771028 P.C.B., Audio E103: 23771029 P.C.B., Fan E104: 23771030 P.C.B., Remote B122 Z102: 23125884 Fan Motor P850: 23122388 Lamp Power P800: 23122389 Main Power Unit NOT SPARE PARTS TLPB2 Service Manual Rev.

  • Page 56: Optical Engine Assembly

    3-6. Optical Engine Assembly E201F: 23430763 Polarizar, Blue E201G: 23430766 E201E: 23430764 Polarizar, Green E201H: 23588619 Fan Motor E201D: 23430765 Polarizar, Red SUB FRAME E201C: 23430762 MAIN FRAME E201B: 23430761 E201A: 23430760 Lens OPTICAL ENGINE E201: 23430759 TLPB2 Service Manual Rev. 2.0...

  • Page 57: Labels

    3-7. Labels A312: 23564301 A310: 23564299 A311: 23564300 Caution Label, Lamp Caution Label, Lens Caution Label, Hot A304: 23564424 A301: 23564308 (B2E) Caution Label, Rating Label A300: 23564297 Tag, Sheet Rear A313: 23564302 Caution Label, AC cord TLPB2 Service Manual Rev. 2.0...

  • Page 58: Parts List

    4. PARTS LIST LOCATION PARTS LOCATION PARTS NUMBER NUMBER DESCRIPTION NUMBER NUMBER DESCRIPTION - MECHANICAL PARTS - - ACCESSORY PARTS - A100 23540043 Top Cover Y102 23368750 RGB Cable A210 23540058 Rear Panel Y105 23368733 Audio Cable (Stereo Mini) A220 23540056A Front Cover Y106...

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