Toshiba TLP-250 User manual

SERVICE MANUAL
FILE NO. 330-200103
SUPPLEMENT
3LCD DATA PROJECTOR
TLP-250/251/250C/251C
TLP-550/551/550C/551C

SECTION 1
PART REPLACEMENT AND
ADJUSTMENT PROCEDURES
1. LOCATION OF MAIN PARTS
L
C
D BL
OC
K
Z1
00
: INTAKE FA
N
P
800
: P
O
WER
SU
PPL
Y
E2
00
:
O
PTI
C
AL EN
G
IN
E
E2
0
1A: PR
OJ
E
C
TI
O
N LE
N
LAMP H
OUS
IN
G
S
PEAKER B
L
Z1
0
1: EXHA
US
T FA
N
:
BALLA
S
T P
O
WER
SU
PPL
Y
2. LOCATION OF PC BOARD
U00
1: MAIN P
C
B
O
AR
D
U002: SENSOR PC BOARD
U002:
1-1
U003: SWITCH PC BOARD

3. REPLACEMENT OF MECHANICAL PARTS
3-1. Lamp Assembly
1-2
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. 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.
Step Figure Explanation
1
2
3
4
Loosen 2 screws (M3 x 8).
These screws are retained with split washers.
Remove the lamp cover.
Loosen 2 screws that secure the lamp module (M3 x 8).
These screws are retained with split washers.
Lift the lamp module and slide out from the projector.

3-2.Top Cover
1-3
Step Figure Explanation
1
2
3
4
5
[Left Side]
Remove 3 screws (M3 x 6).
[Right Side]
Remove 6 screws (M3 x 6).
[Front]
Remove front cover.
Screw : type [M-1]
Screw : type [M-1]
Remove 1 screw (M3 x 6).
Screw : type [M-1]
Slide front cover to the right.

3-2.Top Cover (Continued)
1-4
Step Figure Explanation
6
7
[Rear]
Remove 1 screws (M2 x 6). Screw : type [M-1]
Top cover can be removed by lifting left edge.

3-3. Main PC Board
1-5
Step Figure Explanation
1
2
3
Remove all cables and connectors.
Remove 5 screws (M3 x 6).
Remove 1 screws (M3 x 6).
[Note]
The screw here is also fixing the grand wire.
Screw : type [M-1]
Screw : type [M-1]
Remove lens shift dial.
4

3-3. Main PC Board (Continued)
1-6
Step Figure Explanation
5
6
Remove metal plate.
Remove 2 screws (M3 x 6).
Screw : type [M-1]
Remove 2 screws (M3 x 8). Screw : t
y
pe [M-10
]

3-4. Optical Engine
1-7
Step Figure Explanation
1
2
3
4
5
Remove 1 screw (M3 x 6).......A
Remove Thermal switch.
Remove metal plate.
Screw : type [M-1]
Remove 2 screws (3 x 8) Screw : type [M-2]
Remove 2 screws (3 x 8) Screw : type [M-2]
Remove 2 screws (3 x 8)......B Screw : type [M-2]
AB
B

3-4. Optical Engine (Continued)
1-8
Step Figure Explanation
6
7
7a
7b
Remove lamp housing.
Remove 3 screws (M3 x 15).
Screw : type [M-4]
a
b

3-4. Optical Engine (Continued)
1-9
Step Figure Explanation
8
9
Remove 3 screws (M3 x 8) .
Separate the main frame and sub frame from the engine
block.
Screw : type [M-2]
Sub frame
Sub fram
Main frame

3-5. MULTI-PBS (Polarizing Beam Splitter)
1-10
Step Figure Explanation
1
2
3
4
Remove 3 screws (M3 x 15) ....A
Press the Multi-PBS up from cooling space.
Remove the Multi-PBS.
Screw : type [M-8]
Remove 1 screws (M2.5 x 15) ....B Screw : t
y
pe [M-9
]
A
B
Prism Lamp
Lamp
Lamp
[Note]
Make sure the direction of the PBS when you install.
Lamp SIDE
Prism SIDE
PBS
Rotation Film
Multi Lens
TOP VIEW

3-6. Polarized Plate
1-11
Step Figure Explanation
1
2
3
4
Remve the one screw.
Remove the stopper.
Remove the holder and polarized plate.
[Note]
The film side must be faced to the LCD panel when installing
and the color must be related with the color of LCD panel.
Color
Marking
Panel Sidepolarizer film
polarizer film
polarizer film
5
Tighten a screw in the position where 100% black image
screen gets the darkest.

3-7. Intake Fan
1-12
Step Figure Explanation
1
2
3
4
5
Remove 2 screw (3 x 8).
Remove intake fan block from the bottom cabinet.( It pulls
up along with a rail. )
Remove filter block from the bottom cabinet.
The filter is split like this.
Screw : type [M-2]
Remove 2 screws (3 x 8).
Screw : type [M-2]
Rail

3-7. Intake Fan (Continued)
1-13
Step Figure Explanation
6
7
Remove 2 screw (3 x 47).
The Intake fan block is split like this.
Screw : type [M-5]

3-8. Exaust Fan
1-14
Step Figure Explanation
1
2
3
4
Remove 1 screw (3 x 8).
Remove intake fan block from the bottom cabinet.( It pulls
up along with a rail. )
The exaust fan block is split like this.
Screw : type [M-2]
Remove 2 screws (3 x 15).
Screw : type [M-6]
Rail

1-15
3-9. Speaker Block
Step Figure Explanation
1
2
Remove 2 screws (3 x 8).
Remove 1 screw (3 x 8).
The speaker will be removed like this.
Screw : type [M-2]
Screw : type [M-2]

1-16
3-10. Switch PC Board
Step Figure Explanation
1
2
Remove 1 screws (3 x 8).
[Note]
The safety interlock switch is pushed when the lamp cover is
replaced.
Screw : type [M-2]
Switch
Switch
Switch
Lamp Cover
Lamp Cover
Lamp Cover

3-11. Power Supply
1-17
Step Figure Explanation
1
2
3
4
5
Disconnect the cable from the AC inlet.
A : Remove 1 screw (M3 x 5).
Remove 1 screw (3 x 8).
Lift up back side of the power unit .
Remove 2 hook from the bottom cabinet in the direction of
this arrow.
Screw : type [M-3]
Screw : type [M-2]
B : Remove 1 screw (3 x 8). Screw : type [M-2]
A
B

3-11. Power Supply (Continued)
1-18
Step Figure Explanation
6
7
Remove EMC filter unit.
Remove 2 screws (3 x 8) Screw : type [M-2]
(2)
3-12. Ballast power Supply
Step Figure Explanation
1
2
Remove black tape.
Remove 2 hooks in the direction of this arrow.

3-12. Ballast power Supply (Continued)
1-19
Step Figure Explanation
6
7
Ballast power supply block is split like this.
Release P.C. board holder by using tweezers.
3
4
5
Lift up the main power supply unit.
Release 4 P.C. board holder.
Disconnect the power supply cable and cntrol cable.
(2)