ViewSonic PJ400-1 Manuel utilisateur

Service Manual

ViewSonic

381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

Multimedia LCD Projector

ViewSonic PJ400-1

Model No. VS10459

(PJ400-1_SM Rev. 1bJun. 2006)

reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or

computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,

manual or otherwise, without the prior written permission of ViewSonic Corporation.

Disclaimer

ViewSonic makes no representations or warranties, either expressed or implied, with respect to the

contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular

purpose. Further, ViewSonic reserves the right to revise this publication and to make changes from time

to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or

changes.

Trademarks

ViewSonic is a registered trademark of ViewSonic Corporation.

All other trademarks used within this document are the property of their respective owners.

Optiquest is a registered trademark of ViewSonic Corporation.

Revision History

Revision Date Description Of Changes Approval

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1a 02/11/04 Initial Release DCN-4207 Angela Luh

DCN Number ECR Number

Documents Number Description of Changes EditorRevision SM Editing Date

Initial Release

K. Jeng

PJ400-1

01/19/05 5101

1b 6/1/06 VS-E060088 update RSPL BonnieT.

TABLE OF CONTENTS

1. Precautions and Safety Notices 1

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3. Name of Each Part

4. Adjustment

5. Troubleshooting

6. Service Points

7. Wiring Diagram

8. Disassembly Diagram

10. RS-232C Commands

11. Block Diagram

12. Connector Connection Diagram

2. Features and Specification

13. Basic Circuit Digram

9. Recommended Spare Parts List

PJ400-1

1. Precautions and Safety Notices

1. When replacing the lamp, use care to avoid burns to your fingers. The lamp becomes very hot

during operation.

2. Never touch the lamp with your fingers as body oil transferred to the lamp can damage the

lamp’s useful life.

3. Never drop the lamp or jar it in any manner. This may cause the lamp to burst.

4. This projector is provided with a high voltage circuit for the lamp. Do not touch any electric

part or component after the projector has been turned on and is operating. Doing so could

induce a severe shock causing injury or death.

5. Do not touch the exhaust fan, nor block its air flow, during operation, as the fan is hot.

6. The LCD module assembly can be easily damaged during service. If replacing the LCD

Lens/Prism assembly, do not hold the FPC of the LCD module assembly.

7. Use only the cables which are included with the projector, or are specified in this manual.

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• High Brightness

• Low Noise

• Compact Body

Liquid clystal

panel

Drive system TFT active matrix

Panel size 1.4cm (0.55 type)

Number of pixels 800 (H) x 600 (V)

Lamp 165W UHB

RGB

signal

input

RGB IN

Video : Analog 0.7Vp-p(75Ω termination)

H/V. sync.: TTL level (positive/negative)

Composite sync.: TTL level

VIDEO

signal

input

VIDEO IN 1.0Vp-p(75Ω termination)

S-VIDEO IN

Y signal : 1.0±0.1Vp-p, (75Ω termination)

C signal : 0.286±0.1Vp-p(NTSC burst signal, 75Ω termination)

0.3±0.1Vp-p(PAL/SECAM burst signal, 75Ω termination)

AUDIO IN 200mVrms, 47kΩ or more (max. 3.0Vp-p)

Speaker output 1W(mono)

Power supply AC100~120V/2.7A,AC220~240V/1.5A

Power consumption 240W

Dimensions 285 (W) x 73 (H) x 202 (D) mm (Not including protruding parts)

Weight 2.2kg(4.85lbs)

Temperature range Operation : 5~35°C

Storage : -20~60°C

Accessories

Remote control x 1

RGB cable x 1

Power cords x 3

Batteries x 2

Filter cover for bottom up use x 1

User’s manuals x 1

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2. Features and Specification

2-1. Features

2-2. Specifications

3. Names of each part

S-VIDEO VIDEO AUDIO

RGB

CONTROL

Lens

Lens cover

Filter cover

(Air ﬁlter and intake vent

are inside.)

Elevator button

Elevator foot

Remote sensor

Focus ring

Vent

AC inlet

Power switch

Elevator button

S-VIDEO port

VIDEO port

CONTROL port

Projector

Lamp cover

(Lamp unit is inside.)

Elevator foot

Bottom side

Speaker

Front-Right side

Rear-Left side

Control buttons

Ports

(See below.)

Vent

Ports

AUDIO port

Restart switch

RGB port

Kensington lock slot

NOTE (*) About Restart switch: This Projector is controlled by an internal

microprocessor. Under certain exceptional circumstances, the projector may not

operate correctly and the microprocessor will need to be reset. In such a case,

please push the Restart switch by using a cocktail stick or similar and before

turning on again, make the projector cool down at least 10 minutes without

operating. Only push the Restart switch in these exceptional instances.

Part names

●

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STANDBY/ON

INPUT

LAMP

TEMP

POWER

VIDEO RGB SEARCH

FREEZE

OFF

MAGNIFY

ASPECT AUTO BLANK

MUTE

VOLUME

KEYSTONE

POSITION

ESC

ENTER

RESET

ZOOM

LAMP indicator

TEMP indicator

POWER indicator

INPUT button

Cursor buttons

▲,▼,◄,►

STANDBY/ON button

Controls

Remote control

SEARCH button

RGB button

VIDEO button

ASPECT button

MAGNIFY

ON button

OFF button

FREEZE button

POSITION button

ESC button

STANDBY/ON button

AUTO button

BLANK button

VOLUME button

MUTE button

KEYSTONE button

Zoom

+ button

- button

MENU button

Menu cursor buttons

▲,▼,◄,►

ENTER button

RESET button

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4. Adjustment

4-1 Before adjusting

4-1-1 Selection of adjustment

When any parts in the table 4-1 are changed, choose the proper adjusting items with the chart.

Table 4-1: Relation between the replaced part and adjustment

Replaced

part

Adjustment

Convergence

(Chap.4-2)

E-POS

(Chap.4-3)

Ghost

(Chap.4-4)

Flicker

(Chap.4-5)

NRSH

(Chap.4-6)

White

balance

(Chap.4-7)

Color

uniformity

(Chap.4-8)

Dichroic

optics unit

LCD/LENS

prism

assembly

PWB

assembly

Main

Lamp

unit

assembly

: means need for adjustment. : means not need for djustment.

: means recommended.

4-1-2 Setting of condition before adjustment

1. Before starting adjustment, warm up projector

for about 10 minutes.

2. Set Zoom Wide to Max. And project an image

with more than 1m (40 inches) in diagonal size.

3. Normalizing the video adjustment

Press the [MENU] button to display the Easy

menu. If Advance menu comes up, move to the

Easy menu.

Select RESET in the Easy menu and press [ ]

or [ENTER] button to open the RESET menu

window. Choose EXECUTE with [ ] button.

Note that no signal input may not allow to reset

the adjustments.

4. Select PICTURE > GAMMA in the Advance

menu to set to DEFAULT1.

Note that PICTURE menu is not selectable with

no signal input displayed.

5. Select PICTURE > COLOR TEMP > CUSTOM

in the Advance menu, then press [ ] or [ENTER]

button to display the equalizing window. Set all

the values of OFFSET and GAIN in the window

to zero.

Caution: Before this performance, make a note

of your customer’s adjustments, because the

data is overwritten.

6. Perform all adjustments from the FACTORY

MENU.

Perform the following operations to display the

FACTORY MENU.

< When you use the remote control… >

a. Press the [MENU] button of remote control to

display the Easy menu. (If the Advance menu

appears, move to the Easy menu from EASY

MENU.)

b. Select the [RESET] in the Easy menu, and

then press the [ ] or [ENTER] button.

c. Next, press the [RESET] button one time.

And hold the [RESET] button for 3 seconds

or more (the FACTORY MENU will appear).

< When you use the keypad… >

a. Press the [ ]

[]

[ ] button of the projec-

tor to display the Easy menu. (If the Advance

menu appears, move to the Easy menu from

EASY MENU.)

b. Select the [

RESET

] in the Easy menu, and

then press the [ ] button.

c. Next, press the [ ] button one time. And

repress and hold the [ ] button together

with the [INPUT] button for 3 seconds or

more (the FACTORY MENU will appear).

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4-4 Ghost adjustment

Signals for internal adjustment

30%

112/255

30%

0/255

Adjustment procedure

1. Make this adjustment after completing the

adjustment in 4-3.

2. Choose Advance menu > OPTION > SERVICE

> GHOST > R,G and B, and set them to zero.

Use DAC-P - GHOST - R: in the FACTORY 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 vertical line, reduce the value by 4 steps.)

4. In the same way, use DAC-P - GHOST-G: in

the FACTORY MENU to adjust so that G color

ghost is at a minimum.

5. In the same way, use DAC-P - GHOST-B: in

the FACTORY MENU to adjust so that B color

ghost is at a minimum.

4-2 Convergence adjustment

Signal pattern for internal adjustment

Adjustment procedure

1. Open FACTORY MENU and then select

OPTION > CNV-V. Use R and/or B so that

three colors of images can be converged at

center, top and bottom of the screen.

2. In the same way, select OPTION > CNV-H and

use R and/or B so that three colors of images

can be converged at center, left and right of the

screen.

4-3

E-POS adjustment

(vertical bars adjustment)

Signal pattern for internal adjustment

112/255

Adjustment procedure

1. Make this adjustment after completing the

adjustment 4-2 Convergence adjustment.

2. Choose Advance menu > OPTION > SERVICE

> GHOST > R,G and B, and set them to zero.

Open FACTORY MENU. Select DAC-P > E-POS

> R and use it so that vertical bars can disappear.

4. In the same way, select DAC-P > E-POS > G

and use it so that vertical bars can disappear.

5. In the same way, select DAC-P > E-POS > B

and use it so that vertical bars disappear.

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4-5 Flicker adjustment

(V.COM adjustment)

Signals for internal adjustment Adjustment procedure

1. Make this adjustment after completing the

adjustment in 4-4 Ghost adjustment.

Use DAC-P - V.COM - R: in the FACTORY

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

FACTORY MENU to adjust the G color flicker.

4. In the same way, use DAC-P - V.COM-B: in the

FACTORY MENU to adjust the B color flicker.

4-7

White balance adjustment

(visual inspection)

Preparations

1. Perform these adjustments after the NRSH

adjustment described in Section 4-6.

2. Reset gamma correction before adjustment.

Place the cursor on [GAMMA] in the FACTORY

MENU, press the [RESET] key and select [DEFAULT].

Adjustment procedure

1. First, adjust the G color.

Select GAMMA, SUB-CNT, and G: in the FACTORY

MENU. If the background is white solid, press the

[ENTER] key on the Remote control transmitter to

change to [G] monochrome in the 33-tone grayscale.

3. Adjust GAMMA, SUB-CNT, and G: in the FAC-

TORY MENU so that brightness of 33 steps is

best.

4. Don’t adjust GAMMA, SUB-BRT, and G: in the

FACTORY MENU. Because we want to keep

the best contrast ratio.

5. Then adjust colors R and B.

Select GAMMA, SUB-CNT, and G: in the FACTORY

MENU. If the background is white solid, press the

[ENTER] key on the Remote control trasmitter to

change to [W] monochrome in the 33-tone grayscale.

7. Adjust GAMMA, SUB-BRT, R: and B: in the

FACTORY MENU so that low-brigtness white

balance is best.

8. Adjust GAMMA, SUB-CNT, R: and B: in the

FACTORY MENU so that middle-brightness

white balance is best.

9. Repeat steps 7 to 8 above, and adjust so that

brightness white balance of 33 steps is best.

4-6

NRSH adjustment (vertical stripe adjustment)

Signals for internal adjustment

/255

112

/255

136

/255

160

/255

160

/255

136

/255

112

/255

Adjustment procedure

1. Make this adjustment after completing the

adjustment in 4-5 Flicker adjustment.

2. Use DAC-P - NRSH - R: in the FACTORY

MENU to adjust so that the vertical lines spaced

every 6 dots are as inconspicuous as possible.

(Reduce the adjustment value when black

stripes appear in the 2nd or 3rd tone from the

black side. Note that when the adjustment value

is lowered, white stripes may appear in the 2nd

or 3rd tone from the bright side. Should this

happen, adjust so that the stripes are as incon-

spicuous as possible.)

In the same way, use DAC-P - NRSH - G: in the

FACTORY MENU to adjust vertical stripes of G color.

In the same way, use DAC-P - NRSH - B: in the

Adjustment menu to adjust vertical stripes of B color.

Press ENTER key

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