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FRONT

 adjust lever

Lock screws

Lock screws

 adjust lever

Lock screws

 adjust lever

Shielding plate G

slide

turn

turn

slide

turn

slide

Shielding plate R

Shielding plate B

Adjustment procedure required when any of the panels has been replaced or the convergence has been
adjusted
(1) Disconnect the flat cables of all the LCD panels.
(2) Let the lamp light up.
(3) To adjust the G mirror, shield the R and B mirrors with shielding plates (You can use a business card or the like to

block the light).

(4) Loosen the lock screw of the M1 adjust lever.
(5) Looking at the G image on the screen, turn or slide the M1 adjust lever until the eclipse on the screen disappears.

Tighten up the screw.

(6) To adjust the R mirror, shield the G and B mirrors and adjust the M5 adjust lever. For the B mirror, shield the R and

G mirrors and adjust the M6 adjust lever.
(Take the same steps 4 and 5 above.)

(7) Remove all the shielding plates to have a white image.

Make sure there is no eclipse.

3.3Vp-p

(Adjust to 2.6V
 DC for red and
 blue.)

(Adjust to 3.3Vp-p
 for green and blue.)

2.6V

1. Turn on the power (make

sure the lamp lights up) and
warm up the unit for 15 min-
utes.

»

Make the following settings:
Press SW5101 to call up the process mode and
execute S2 in the SSS menu. Now the system,
with the PC board not included, is initialized. Do
not execute S1 because otherwise the PC board
will be initialized.
To adjust the PC board, follow the instruction in
"Adjusting the PC board". (See page 28)

1. Turn on the power.
2. Connect the digital voltme-

ter to TP1446.

»

Adjust R1649 so that the voltmeter should read
3.43 ±0.03 Vp-p.

1. Turn on the power.
2. Connect the digital voltme-

ter to TP1447.

»

Adjust R1652 so that the voltmeter should read
2.60 ±0.05 Vp-p.

»

Using the control switches or the remote controller
buttons, adjust the data so that the signal be-
comes bit-less (noise).

1. Feed the 100% red-only sig-

nal. Make the following
choice.
Group : A/D
Subject : R-D

1. Feed the 100% blue-only

signal. Make the following
choice.
Group : A/D
Subject : B-D

»

Using the control switches or the remote controller
buttons, adjust the data so that the signal be-
comes bit-less (noise).

1. Feed the 100% green-only

signal. Make the following
choice.
Group : A/D
Subject : G-D

»

Using the control switches or the remote controller
buttons, adjust the data so that the signal becomes
bit-less (noise).

1. Make the following choice:

Group : OUTPUT 1
Subject : G1-BLK

G1-GAIN

For red, choose the sub-

    jects R1-BLK and R1-GAIN.

For blue, choose the sub-
jects B1-BLK and B1-GAIN.

2. Connect the oscilloscope to

TP1101  for red.

    TP1201  for green
    TP1301  for blue

»

 Choose the subject G1-GAIN and adjust the sig-
nal amplitude to 3.3 ±0.1 Vp-p using the control
switches or the remote controller buttons.

»

Next,choose the subject G1-BLK and adjust the
white to white level to 2.6 ±0.1V DC.

»

Adjust the signal's amplitude and white to white
level to 3.3 ± 0.1Vp-p and 2.6 ± 0.1V DC, respec-
tively, for red and blue.

2.0V DC

7.3

±

0.2V DC

PSIG

GND

(Adjust with PSIG-H.)

(Adjust with PSIG-L.)

1. Connect the oscilloscope to

TP1701 for red.

    TP1702 for green
    TP1703 for blue.

2. Make the following choice:

Group : OUTPUT 2
Subject : PSIG-H

: PSIG-L

»

Adjust the PSIG waveform to the one shown below.

»

For the green and blue colours, make sure their wave-
forms are similar to that of the red colour.

»

Make sure the pin stripe of every 12 dot doesn't ap-
pear at 10 steps signal of side nays.
(Appearing white pin stripe or black one, adjust the
PSIG-H.)

1. Project the XGA60Hz ghost

test pattern (black charac-
ters in bold on the halftone
RGB background).
Group: OUTPUT3

2. GCK-PHASE adjustment

Make sure the setting is fixed
at 8 (initial value).

3. EN-WIDTH adjustment

Make sure the setting is fixed
at 8 (initial value).

4. ENR-PHASE adjustment (R-

LCD ghost adjustment)

5. ENG-PHASE adjustment

(G-LCD ghost adjustment)

6. ENB-PHASE adjustment (B-

LCD ghost adjustment)

»

ENR-PHASE adjustment (R-LCD ghost adjustment)

1

Increase the setting until a ghost image (see
Note) becomes visible at the left of the back
characters on the R half-tone background.

2

Lower the setting point by point until the left-
hand ghost image (

1

 above) disappears.

3

Further lower the setting by one point.

»

ENG-PHASE adjustment (G-LCD ghost adjust-
ment)
Adjust the G ghost image by following the same
procedures described under step 1 above.

»

ENB-PHASE adjustment (B-LCD ghost adjust-
ment)
Adjust the B ghost image by following the same
procedures described under step 1 above.

Note: Left-hand ghost image: Characters are shown

double 12 dots left from the real characters.

Reference: This adjustment is made because the

EPSON LCD panel may have 1- or 2-
point differences due to lot-by-lot varia-
tions.

1. Feed the XGA mode 75-Hz

black signal.

2. Make the following choice:

Group : OUTPUT 3
Subject : SH-PHASE
(Have the standard level at
2.)
Fix the RCK-, GCK- and
BCK-PHASE settings all to
8.

»

Using the control switches or the remote controller
buttons, make sure that the “OUTPUT 3” charac-
ters are not blurry and there is no ghost image. If
such blur or ghost occurs, finely adjust the setting
in the range of 7~9.

1

2

2.0Vp-p

1. Feed the black-and-red

(25%) stripe signal (XGA).

2. Make the following choice:

Group : OUTPUT 3
Subject : RC (R)
and
Group : OUTPUT 3
Subject : RC-INV (R)

»

Using the control switches or the remote controller
buttons, adjust the data in order to minimize the
flicker.

»

Make the same adjustment for BC (B), GC (G),
RC-INV (B) and RC-INV (G).

»

See if the image is equally adjusted at the center
and both sides of the screen. If not, readjust the
setting to have the image equal at right and left.

1. Feed the green-only SMPTE

pattern signal (XGA).
Group : OUTPUT 1
Subject : G1-BLK

»

Adjust the G-BLK data until the gradation of the
portion 

1

 (95% and 100% white) shown below

can be slightly recognized.  Make sure also that the
gradation of the portion 

2

 (0% and 5% black) is

visible.

1. Feed the 32-step gray scale

signal (XGA).
Group : OUTPUT 1
Subject : R1-BLK (R)

B1-BLK (B)

»

Choose the subjects R1-BLK and B1-BLK and
adjust the black balance of the gradation.

1. Feed the NTSC monoscope

pattern signal.

2. Group : VIDEO 2

Subject : N358-DLY     (4)

N443-DLY     (0)
PAL-DLY       (3)
SECAM-DLY (0)

Make sure the settings are

    as above.
3. Group : VIDEO 1

Subject : NTSC-H

»

Using the control switches or the remote controller
buttons, adjust the data to have the same
overscan.

1. Feed the split colour bar sig-

nal.
Group : VIDEO 1
Subject : PICTURE

2. Connect the oscilloscope

between pin (2) of P801 and
GND.

»

Using the control switches or the remote controller
buttons, adjust the black-to-white (100%) level
difference to 2.0 ±0.02 Vp-p.