Service Manuals, User Guides, Schematic Diagrams or docs for : TOSHIBA Beamer TLP450 451 650 651 toshiba_tlp-450e_450u_451e_451u_650e_650u_651e_651u_sm

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                         FILE NO. 330-9904




SERVICE MANUAL



3LCD DATA PROJECTOR
TLP450E, TLP451E
TLP650E, TLP651E
TLP450U, TLP451U
TLP650U, TLP651U



                 TLP451, TLP651


                     PRINTED IN JAPAN, Oct., 1999 S
                                                                                              CONTENTS


SAFETY PRECAUTIONS .............................................................. I
IMPORTANT PRECAUTIONS .................................................... I
IMPORTANT SAFETY INSTRUCTIONS .............................. II




                                                                        SECTION 1
                                                       PART REPLACEMENT AND ADJUSTMENT PROCEDURES
1 . LOCATION OF MAIN PARTS ......................................... 1 - 1                                   3-11. Input PC Board ............................................................... 1-6
2 . LOCATION OF PC BOARDS ........................................... 1 - 1                                  3-12. Lens .................................................................................... 1-6
3 . REPLACEMENT OF MECHANICAL PARTS ............ 1 - 2                                                       3-13. Mirror Box ....................................................................... 1-6
    3-1. Camera Arm Assembly (Only for TLP451/651) ........ 1-2                                              3-14. LCD Block and LCD Panel ........................................... 1-7
    3-2. Lamp Assembly ................................................................. 1-2                 3-15. CAM SW PC Board (Only for TLP451/651) ............ 1-9
    3-3. Front Cover and Top Cover .......................................... 1-3                            3-16. Arm Assembly (Only for TLP451/651) ...................... 1-9
    3-4. Main PC Board ................................................................. 1-3                 3-17. Switch (Only for TLP451/651) .................................. 1-10
    3-5. RGB PC Board .................................................................. 1-3                 3-18. Camera PC Board (Only for TLP451/651) ............. 1-10
    3-6. Handle and Fan Assembly ............................................... 1-4                         3-19. Lamp PC Board (TLP451/651) .................................. 1-10
    3-7. Power Supply Unit ............................................................ 1-4              4 . ELECTRICAL ADJUSTMENT ....................................... 1 - 1 1
    3-8. Filter Assembly .................................................................. 1-5              4-1. LCD Drive Adjustment .................................................. 1-12
    3-9. Lamp House ....................................................................... 1-5          5 . LED DISPLAY ...................................................................... 1 - 1 6
    3-10.Optical Engine .................................................................. 1-5




                                                                                           SECTION 2
                                                                                      SERVICING DIAGRAMS
1 . PART CONFIGURATION AND THEIR SYMBOLS 2 - 1                                                           5 . CIRCUIT DIAGRAMS ...................................................... 2 - 1 5
    1-1. Replacing Subminiature "CHIP" Parts ....................... 2-1                                     5-1. Drive Circuit Diagram (for TLP650, TLP651) ........ 2-15
    1-2. Precoutions for Part Replacement ................................ 2-2                               5-2. Drive Circuit Diagram (for TLP450, TLP451) ........ 2-19
    1-3. Solid Resistor Indication .................................................. 2-2                    5-3. Main Circuit Diagram (for TLP650, TLP651) ......... 2-23
    1-4. Capacitance Indication .................................................... 2-2                     5-4. Main Circuit Diagram (for TLP450, TLP451) ......... 2-27
    1-5. Inductor Indication ........................................................... 2-3                 5-5. Micon Circuit Diagram ................................................. 2-31
    1-6. Waveform and Voltage Measurement .......................... 2-3                                     5-6. RGB Circuit Diagram .................................................... 2-35
2 . EACH SIGNAL FLOW ........................................................ 2 - 4                          5-7. Input Circuit Diagram ................................................... 2-39
    2-1. Operation at RGB Signal Input ..................................... 2-4                             5-8. Power Supply Circuit Diagram .................................... 2-42
    2-2. Video Signal ....................................................................... 2-4            5-9. Camera Interface Circuit Diagram ............................ 2-45
    2-3. Operation at Y/Pb/Pr Signal and HDTV Signal Input2-5                                                5-10. ............................................ FAN Control Circuit Diagram
    2-4. Camera Input Operation ................................................ 2-5                         2-47
    2-5. Camera Overlay Signal ................................................... 2-5                   6 . PC BOARDS ......................................................................... 2 - 4 9
3 . BLOCK DIAGRAMS ............................................................ 2 - 7                        6-1. Input PC Board ............................................................... 2-49
    3-1. RGB Block Diagram ........................................................ 2-7                      6-2. CAM Switch PC Board .................................................. 2-50
    3-2. Input Block Diagram ........................................................ 2-8                    6-3. Main PC Board ............................................................... 2-51
    3-3. Main Block Diagram ........................................................ 2-9                     6-4. RGB PC Board ................................................................ 2-55
    3-4. Digital Block Diagram ................................................... 2-11                      6-5. LED PC Board ................................................................ 2-55
4 . PRINTED WIRING BOARD AND                                                                                 6-6. Sub Digital PC Board .................................................... 2-56
    SCHEMATIC DIAGRAM ................................................. 2 - 1 2



                                                                                                 SECTION 3
                                                                                                 PARTS LIST
1 . SAFETY PRECAUTION ...................................................... 3 - 1                       4 . EXPLODED VIEWS .............................................................. 3 - 2
2 . NOTICE ..................................................................................... 3 - 1       4-1. Packing Assembly ............................................................. 3-2
3 . ABBREVIATIONS .................................................................. 3 - 1                   4-2. Remote Control Unit ........................................................ 3-2
    3-1. Integrated Circuit (IC) .................................................... 3-1                    4-3. Chassis Assembly ............................................................... 3-3
    3-2. Capacitor (Cap) ................................................................ 3-1                4-4. Arm Assembly (TLP451, TLP651) ................................ 3-4
    3-3. Resistor (Res) ..................................................................... 3-1        5 . PARTS LIST ............................................................................. 3 - 5
                                                                      ADJUSTMENT PROCEDURES
                                                                       PART REPLACEMENT AND
                      SECTION 1




                                                                             SECTION 1
                PART REPLACEMENT AND
               ADJUSTMENT PROCEDURES
1. LOCATION OF MAIN PARTS
                                 TLP451/651




   E200 Optical Engine                              PC300 Camera
                                                     Unit Assembly
   B180 Lamp House

   P800 Power Unit

   Z101 Fan




                                                 SC01 Arm Position
                                                  Detection Switch


   P100 Thermal Lead Switch                             LCD Block
   Projection Lens                                           Filter


                              Fig. 1-1-1

2. LOCATION OF PC BOARDS      TLP451/651




   U007 Sub Digital


   U001 Main PC Board                         U0032 LED PC Board


                                                   U0031 CAM
                                                   Switch PC Board




                                              U0021RGB PC Board

                                              U0022 Input PC Board

                              Fig. 1-2-1
                                 1-1
                        CAUTIONS BEFORE STARTING SERVICING
   Electronic parts are susceptible to static electricity and may easily damaged, so do not forget to take a 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. Several kinds of screws are used and some of them need special cautions. That is, take care
   of the tapping screws securing molded parts and fine pitch screws used to secure metal parts. If they are used
   improperly, the screw holes will be easily damaged and the parts can not be fixed.




3. REPLACEMENT OF MECHANICAL PARTS

3-1. Camera Arm Assembly                                           3-2. Lamp Assembly
     (Only for TLP451/651)                                         1. Loosen two screws (1) and remove the cover (2).
1. Remove six screws (1) and remove the camera arm                 2. Pull down the handle to remove the lamp assembly (3).
   assembly (2).
2. Remove the connector (3) connecting to the main
   unit.




                      Screws (1)
       Camera arm
       assembly (2)



Main unit
                                                                                                        Lamp assembly (3)


                                                                                                       Handle




                                                                                                          Cover (2)
                                             Connector (3)
                                                                    Screws (1)
                                                                    (Loosen.)
                        Fig. 1-3-1
                                                                                          Fig. 1-3-2




                                                             1-2
3-3. Front Cover and Top Cover
                                                                      Connectors (2)             Main PC board (1)       Screws (4)
1. Remove two screws (1) and remove the front cover (2)
   by sliding the portion A pushed with a thin bar in the
   arrow B direction.
2. Remove nine screws (3).
3. Push the handle (4) to one side and remove the top
   cover (5) by rotating in the arrow C direction.


                                                                                 FFC (3)
                                                                    FFC (3)                                          Connector on
      Top cover (5)         C
                                                                                                                     RGB PC board (5)




               Handle (4)
                                               Screws (3)
Screws (3)

                                                                      FFCs (3)
Screws (1)                                                                                                     RGB PC board (5)
     B
                                                                                             Fig. 1-3-4


                                                                    3-5. RGB PC Board
                      Screws (3)
                                                                    1. Remove the FFC (1).
                      Front cover (2)
                                                  Screw (3)         2. Remove four screws (2) and RGB PC board (3).
  A
                                                                    3. Remove four screws (4) and remove the cover (5) from
                                                                       the RGB PC board (3).
       Push
                                                                                       Screws (2)                        Cover (5)

                                                                              RGB PC board (3)
                            Fig. 1-3-3


3-4. Main PC Board
1. Remove four connectors (2) and five FFCs (3)
   connected to the main PC board (1).
2. Remove seven screws (4).                                                                                               Screws (4)
3. Lift the main PC board (1) upward and remove the
   main PC board (1) from the RGB PC board (5).


                                                                                                                           FFC (1)




                                                                                             Fig. 1-3-5


                                                              1-3
3-6. Handle and Fan Assembly                                          3-7. Power Supply Unit
1. Pull out the handle (1) upward.                                    1. Remove two screws (1) and then remove the shield
2. Remove two screws (2) and fan assembly (3).                           plate (2) and the socket (3). (Do not lose the shield
                                                                         plate (2).)
3. Remove two screws (4) and then remove the fan (5)
   from the fan bracket (6).                                          2. Remove two screws (4) and remove the power supply
                                                                         unit (5).
                          Screws (2)                                  3. Remove two screws (6) and one screw (7) and remove
   Fan bracket (6)
                                                                         the interlocking switch and plate (8).
                                             Fan assembly (3)

         Fan (5)
                                                                      Screws (4)
Screws (4)



                                                                                                             Power supply unit (5)




                                                                                                                Screws (1)

                                Handle (1)


                                                                         Socket (3)                             Shield plate (2)
                                                                                                                 Screw(6)

                                                                                             Screw (7)
                                                                                             Screw (6)




                                                                                              Interlocking        Interlocking
                                                                                              switch (8)          switch plate (8)




                       Fig. 1-3-6




                                                                                              Fig. 1-3-7




                                                                1-4
3-8. Filter Assembly                                                         Temperature          Screw (4)
                                                                             sensor switch (5)
1. Remove the filter cover (1) from the suction fan                                                      Screw (1)
   holder (2).
2. Remove the filters (3) and (4) from the filter cover (1).
   (When replacing and/or cleaning the filter, note the                                                       Lamp house (3)

   arrangement of the filters. Refer to Fig. A)                                                                       Fan (7)
                                                                              Screw (2)
3. Remove two screws (5) and pull out the filter assem-
   bly (6) upward.                                                                                                        Screw (6)
4. Remove two screws (7) and remove the fan (8).
5. Remove the suction fan mouse piece (9) from the
   suction fan holder (2).



   Screws (7)       Fan (8)    Screws (5)   Suction fan
                                            mouse piece (9)

                                                Filter (4)
                                                    Filter (3)
                                                       Filter
                                                       cover (1)
      Suction fan
      holder (2)                                             Fig. A
                                                                                                   Fig. 1-3-9


  Filter
                                                                            3-10. Optical Engine
  assembly (6)                                                              1. Remove four screws (1).
                                                                            2. Remove the optical engine (2) by lifting upward.
                                                Replacement
                                                filter                                                                     Screws (1)




                                                                             Optical engine (2)

                          Fig. 1-3-8


3-9. Lamp House
1. Remove one screw (1) and (2) and then remove the
   lamp house (3).
2. Remove one screw (4) and then remove the tempera-
   ture sensor switch (5).
3. Remove one screw (6) and then remove the fan (7).




                                                                                                  Fig. 1-3-10

                                                                      1-5
3-11. Input PC Board                                                 3-13. Mirror Box
1. Remove five screws (1).                                           1. Remove three screws (1) and then remove the mirror
2. Remove the input PC board (2) by turning the arrow                   box (2).
   direction.
                                                                             Screws (1)
                             Screws (1)




                                          Input PC board (2)




                                                                          Mirror box (2)




                      Fig. 1-3-11


3-12. Lens
1. Remove four screws (1) and then remove the lens (2).


                                                                                           Fig. 1-3-13




        Screws (1)


 Lens (2)




                      Fig. 1-3-12




                                                               1-6
3-14. LCD Block and LCD Panel                                        3. Mount a holder support for the service holder at the
1. Remove three screws (1) and remove the LCD block (2).                location of the panel holder removed. (Use screws
                                                                        removed in step 2.) (Refer to Fig. 1-3-16 for the
2. Remove three screws (3) and remove the LCD panel (4).
                                                                        following steps.)
                                                                     4. Mount a new panel on the XY shifting plate with the
  Screws (3)                                    Screws (3)
                                                                        Z rotation plate placed between them. (Use L upper
                          LCD panel (4)                                 and lower adjustment screws.) At this time, fix them so
                                                                        that two holes on the panel lower side are matched
                                                                        with the holes on the Z rotation plate.
                                                   LCD
                                                   panel (4)         5. Mount the Z rotation plate on the holder support.
                                                                        (Use S adjustment screws.) Tighten the S adjustment
 LCD panel (4)                                                          screws lightly.
   LCD block (2)
                                                                               Holder support
                                                                                                     XY shifting plate
                                                                                                                       L upper adjusting
                                                                                                                       screw (x2)
                                                 Screws (3)




                                   Screws (1)
                                                                     Adjusting screws S (x2)

                         Fig. 1-3-14
                                                                               Z rotation plate           Panel
3-14-1. Panel Replacement and Adjustment
                                                                                        L lower adjusting screw (x1)
        Procedures
< Replacement procedures >
1. Remove the prism block from the optical engine.
                                                                        Fig. 1-3-16 Mounting view of a holder for service
2. Remove the panel and the panel holder from the
   prism block. (Refer to Fig. 1-3-15.)
                                                                     < Panel adjustment procedures >
                                                                     



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