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This adjustment is needed when any of the optical parts of the optical mechanism has been replaced.
1. Disconnect the flat cables from all the LCD panels.
2. Light up the lamp.
3. Project a white-light image and check to see if there is any color tint in any direction. If any, use the M2, M4 and M5

adjusting levers.

4. Loosen the adjusting lever lock screws, make adjustments, and tighten up the lock screws.

If color irregularities are found at the right and left on a white-only screen after replacing the lamp, it is necessary to
readjust the optical axis of the new lamp. Take the following steps.
1. Open the lamp cover and loosen the screws A and B at the bottom of the lamp.
2. Using a screwdriver or the like, move the U-shaped groove at the window D in the arrow direction.
3. Temporarily fix the screws A and B, close the lamp cover, and check the white-only screen again for color

irregularities.

4. Repeat the above steps 1 and 2 until there will be no color irregularities. Now tighten up the screws A and B.
5. Finally secure the lamp cover back in position.

M4 Adjusting lever

M2 Adjusting lever

Screw B

Screw A

Lock screws

Lock screws

Lock screws

M5 Adjusting lever

1. Remove the four lock screws, and take the prism holder unit out of the optical unit.
2. Replace the prism unit with new one. Take the above step 1 in reverse order.

Note: Even if just one of the LCD panels is defective, it is necessary to replace the entire prism unit. Do not replace

just the defective LCD panel only. Under the present circumstances, please do not touch the display part of
LCD.

G-LCD panel

Optical unit

R-LCD panel

Prism unit lock screws

B-LCD panel

Turn on the power. If the system lock is applied, the system-resetting screen appears. Press the following keys in this

order.

MENU 

→

 ENTER 

→

 ENTER 

→

 MENU 

→

 UNDO 

→

 UNDO 

→

 MENU

 

          

            

         

         

          

          

After pressing the MENU key first, press the remaining six keys within 10 seconds.

1

Initialization of
EEPROM

1. Turn on the power (the lamp lights

up) and warm up the system for 15
minutes.

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

1. Make the following settings.

Press S2601 to enter the process
mode, and execute S2 on the SSS
menu. Now the EEPROM, except for
the PC I/F unit, is initialized.
Do not execute S1, or the PC I/F unit
itself will be initialized.
(The PC I/F unit has been factory-
adjusted.)
To adjust the PC I/F unit, refer to "How
to Adjust the PC I/F unit" on the last
page.

2

Adjustment of
RGB1 black level
signal amplitude

1. Select the following group and sub-

jects.
Group: OUTPUT1
Subject: G1-BLK, G1-GAIN
For the color R, select the subjects
R1-BLK and R1-GAIN.
For the color B, select the subjects
B1-BLK and B1-GAIN.

2. Make sure the process adjustment

color bars are displayed.

3. For the color G, connect a oscillo-

scope to pin (2) of P1301.

4. For the colors R and B, connect the

oscilloscope to pin (1) of P1301 and
pin (3) of P1301, respectively.

1. Select the subject G1-GAIN. Using

the set's control switch or the remote
controller button, adjust the setting
so that the signal amplitude is 4.0
Vp-p±0.05 V.

2. Select the subject G1-BLK. Using the

set's control switch or the remote
controller button, adjust the setting
so that the white-to-white level is 1.8
Vp-p±0.1 V.

3. Do the same for the other colors R

and B.

~

The G1 subjects are linked with the
R1 and B1 subjects.
When the G1-BLK setting has been
changed, therefore, the R1-BLK and
B1-BLK settings vary themselves
accordingly. When the G1-GAIN set-
ting has been changed, equally, the
R1-GAIN and B1-GAIN settings vary
themselves accordingly. First make
the G1 settings and then readjust the
R1 and B1 settings as required.

3

Adjustment of
PSIG

1. Select the following group and sub-

jects.
Group: OUTPUT2
Subject: PSIG-H, PSIG-L
Make sure the PSIG-H and PSIG-
L settings are 64 and 100, respec-
tively.

1. Get the PSIG waveform displayed.

(Feed the XGA signal.)

2.5V DC

5.6V DC

GND

PSIG

Adjust the PSIG-H setting. Adjust the PSIG-L setting.