Panasonic PT-TW351R (serv.man6) Service Manual ▷ View online
DIS-13
SECTION 2 DISASSEMBLY PROCEDURES
<TW351R>
Note on handling of inorganic polarizer
Indication of light in-coming side and outgo-
ing side
Cleaning capability of polarizer
Indication of light in-coming side and outgo-
ing side
The incident and exit plane of the polarized glass or
Optical block is shown in the figure below. It shows the
light emitted from the lamp.
The aluminum evaporated surface of inorganic polar-
izer is contact prohibition area. Prohibit touching it with
bare hand, wiping or contacting with the other parts.
Screen side
Lamp side
Incident plane
Polarizer
Exit plane
This projector provides high durable inorganic polarizer which has a rib shaped evaporated aluminum on the glass surface.
This surface is very delicate. If touching or wiping the surface, the polarizing function will be lost due to damage of the
aluminium rib construction on the surface. Extreme care should be taken to handle the polarizer.
z
Inorganic polarizer handling
Never grasp the surface or edges of the polarizer with bare hand. If fat and oil on your hand adheres on the
edges of polarizer, the linear bolt may appear on the glass surface due to capillarity. Grasp the edges of the
glass with new gloves or with tweezers when handling it.
z
Inorganic polarizer cleaning
When removing the dust on the surface, use a commercial (inert gas) air spray or air blower to remove them.
Never use organic solvents.
2.0mm
2.0mm
2.0mm
2.0mm
Contact prohibition area
Aluminum evaporated surface
Type
wipe cleaning
Incident plane Exit plane
Polarizer-out
R
Organic
OK
OK
G
Inorganic
NG
OK
B
Inorganic
NG
OK
Polarizer-in
R
Organic
OK
OK
G
Organic
OK
OK
B
Inorganic
OK
NG
DIS-14
SECTION 2 DISASSEMBLY PROCEDURES
<TW351R>
2. 2. Polarizer-in removal
Polarizer-in
Polarizer-in assy
A
A
A
*Do not disassembly the
polarized glass from the bottom.
1 Mount the polarized glass at the center of the slot B precisely.
2 Tighten screw A and fix the polarized glass R board.
- Follow step 1-2 to mount the polarized glass G and B.
1. Remove 3 screws A (M2.5x6).
2. Remove lighting case top to unhook 5 hooks on it as
shown in the figure.
3. Pull each polarizer upward off.
Note on polarized glass mounting
A
Slot B
Mount the polarized glass at the center
of the slot B.
DIS-15
SECTION 2 DISASSEMBLY PROCEDURES
<TW351R>
PBS
Integrator out
* Rugged surface
facing to the PBS
Integrator lens
stopper
Integrator lens holder-top
Integrator lens
shield
Integrator lens
holder bottom
PBS holder
PBS shield
Iris unit
1. Remove 2 screws A(M3x8) to remove condenser lens-out assy.
1. Remove 3 screws A(T3x8) to take off the iris unit from the lighting case.
2. Remove 2 screws B(T3x8) to take off the PBS shield from the lighting case.
2. 3. Condenser lens (OUT) removal
2. 4. PBS and integrator removal
A
B
B
A
A
A
A
Integrator in
DIS-16
SECTION 2 DISASSEMBLY PROCEDURES
<TW351R>
D
B
H
E
C
When disassembling or mounting the optical parts in the Light-
ing block, the parts must be mounted in the specified location
and direction as shown in the figure below.
A
G
2. 5. Parts locations and directions in the lighting case
No. Parts Name
A
Dichroic mirror (B)
B
Dichroic mirror (G)
C
Condenser lens (R)
D
Condenser lens (G)
E
Condenser lens (B)
F
Reflection mirror(R)
G
Relay lens (IN)
H
Reflection mirror (B)
I
Relay lens (OUT)
F
I
F
Marker comes
this side up
Marker
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