DOWNLOAD Panasonic PT-EZ590E / PT-EZ590LE / PT-EW650E / PT-EW650LE / PT-EW550E / PT-EX620E / PT-EX620LE / PT-EX520E (serv.man2) Service Manual ↓ Size: 32.15 MB | Pages: 110 in PDF or view online for FREE

DIS-15

* Before taking the procedure below, remove the cabinet top, [A]-P.C.Board beforehand.

* The M2.5mm hex driver is needed to remove the hex screws.

Please note that the optical block for model PT-EZ590 is a unit combined with the lens shift block. There-

fore, the disassembly procedure differs from models PT-EW650/EW550/EX620/EX520 as the below.

Only for models PT-EW650/EW550/

EX620/EX520

Only for model PT-FZ590

DIS-16

1.  Loosen 2 hex screws-A(M2.5) and remove the optical block upward.

<Remove the lighting block and shutter unit before taking this procedure.>

1.  Remove 4 screws-A and remove the lens shift block from the lighting case.

A

Optical block

Lens shift block

Lighting case

Optical block

Note:

The optical block or the lens shift block cannot be replaced indi-
vidually. Should be replaced as a unit.

A

Please pay attention not to scratch the surface of 
polarizer-in when taking out the optical block.

DIS-17

 LCD panels used for this model cannot be replaced separately. Do not disassemble the optical block. These LCD panels are 
installed with precision at the factory. When replacing the LCD panel, should be replaced whole of the LCD panels and prism 
assy at once. 
When replacing optical block, take the optical and electrical adjustments following to the chapter "Adjustment".

1.  Remove each 1 hex screw-B (M2.5) on the polarizer holder 

and pull the polarizer-out upward carefully.

Polarizer-out(B) 
(Inorganic type)

Polarizer-out(G) 
(Inorganic type)

Polarizer-out(R) 

(Inorganic type)

B

Al evaporated side 
(light incoming  side)

Al evaporated side 
(light incoming  side)

Al evaporated side 
(light incoming  side)

DIS-18

Polarizer-in unit

1.  Remove  each 1 hex screw-C (M2.5) on the polarizer holder 

and remove the polarizer-in unit upward carefully.

C

This projector provides high durable inorganic polarizer which have a rib shaped evaporated aluminum on the glass sur-
face. 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.

 

 

n 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.
n 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.

Screen side

Lamp side

In-coming 
side

In-coming side

Out-going side

Type

wipe cleaning

In-coming side

Out-going side

Polarizer-

out

R

Inorganic

NG

OK

G

Inorganic

NG

OK

B

Inorganic

NG

OK

Polarizer-in

R

Inorganic

OK

NG

G

Inorganic

OK

NG

B

Inorganic

OK

NG

The indication of "in-coming side" and "out-going side" of 
the polarizers or LCD panels is shown in the figure. It in-
dicates the light in-coming and out-going from the lamp.

Polarizer-in (R)

(inorganic)

Polarizer-in (G)

(inorganic)

Polarizer-in (B)

(inorganic)

Please pay attention not to scratch the surface of 
polarizer-in when taking out the polarizer-in unit.