ViewSonic PJ750-2 Service Manual - Page 8

4.

Adjustment

4-1

Before

adjusting

1.

Before

starting

adjustment,

warm

up

the

projector

for

about

10

minutes.(Blank

white)

2.

Set

Zoom

Wide

to

Max.

And

project

an

image

a

distance

of

more

than

40

inches

and

set

the

normal

at

"WHISPER"

mode.

3.

Normalizing

the

video

adjustment.

(Press

the

[MENU]

button

of

the

Remote

control

transmitter

to

display

the

Setup

menu,

and

then

press

the

[RESET]

button.

And

select

the

[DEFAULT].)

*note

:

The

setup

menu

is

not

displayed

on

with

no

signal.

4-2

Ghost

adjustment

Signals

for

internal

adjustment

30

:%11411118143f

0/255

bit

4.

Set

the

another

[MENU]

as

follows.

a.

GAMMA

in

the

IMAGE

menu

is

NORMAL.

b.

COLOR

TEMP.

in

the

IMAGE

menu

is

NORMAL.

c.

WHISPER

in

the

OPT

menu

is

NORMAL.

5.

Perform

all

adjustments

from

the

Adjustment

menu.

Perform

the

following

operations

to

display

the

Adjustment

menu.

a.

Press

the

[MENU]

button

of

the

Remote

control

transmitter

(the

Setup

menu

will appear).

b.

Next,

press

the

[RESET]

button

one

time.

And

press

the

[RESET]

button

again

for

5

seconds

or

more

(the

Adjustment

menu

will

appear).

Adjustment

procedure

1.

Use

DAC-P

-

GHOST

-

R:

in

the

Adjustment

menu

to

adjust

so

that

R

color

ghost

is

at

a

minimum.

(Set

the

adjustment

value

to

default,

and

then

raise

the

value.

When

a

ghost

appears

to

the

left

of

a

112;'255

vertical

line,

reduce

the

value

by

2

steps.)

2.

In

the

same

way,

use

DAC-P

-

GHOST

-G:

in

the

Adjustment

menu

to

adjust

so

that

G

color

ghost

is

at

a

minimum.

3.

In

the

same

way,

use

DAC-P

-

GHOST

-B:

in

the

Adjustment

menu

to

adjust

so

that

B

color

ghost

is

at

a

minimum.

bit

4-3

Flicker

adjustment

(V.COM

adjustment)

Signals

for

internal

adjustment

Adjustment

procedure

1.

Make

this

adjustment

after

completing

the

adjustment

in

4-2

Ghost

adjustment.

2.

Use

DAC-P

-

V.COM

-

R:

in

the

Adjustment

menu

to

adjust

so

that

the

flicker

at

the

center

of

the

screen

is

less

than

the

flicker

at

the

periphery.

(When

the

flicker

is

about

the

same

across

the

whole

screen,

adjust

so

that

the

flicker

at

the

center

of

the

screen

is

somewhat

less

than

elsewhere.)

3.

In

the

same

way,

use

DAC-P

-

V.COM-G:

in

the

Adjustment

menu

to

adjust

the

G

color

flicker.

4.

In

the

same

way,

use

DAC-P

-

V.COM-B:

in

the

Adjustment

menu

to

adjust

the

B

color

flicker.

ViewSonic

Corporation

CONFIDENTIAL

--

DO

NOT

COPY

PJ750-2

5

ViewSonic PJ750-2 Service Manual - Page 8

Adjustment

Page 8 highlights