ViewSonic PJ650 Bedienungsanleitung

Model No. VPROJ27747-1W

Service Manual

LCD Projector PJ650-1

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

(PJ650-1_SM_- Rev. 1 – October 2003)

PJ650

(C3XM4)

SERVICE MANUAL

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

Multimedia LCD Projector

October 2003

  







Be sure to read this manual before servicing. To assure safety from re, electric shock, injury, harmful

radiation and materials, various measures are provided in this Multimedia LCD Projector. Be sure to

read cautionary items described in the manual to maintain safety before servicing.

Caution

1. When replacing the lamp, avoid burns to your ngers. The lamp becomes too hot.

2. Never touch the lamp bulb with a nger or anything else. Never drop it or give it a shock. They may

cause bursting of the bulb.

3. This projector is provided with a high voltage circuit for the lamp. Do not touch the electric parts of

power unit (main), when turn on the projector.

4. Do not touch the exhaust fan, during operation.

5. The LCD module assembly is likely to be damaged. If replacing to the LCD/LENS PRISM module

assembly, do not hold the FPC of the LCD module assembly.

6. Use the cables which are included with the projector or specied.

Service Warning

1. Features -----------------------------------------------2

2. Specications-----------------------------------------2

3. Names of each part ---------------------------------3

4. Adjustment --------------------------------------------5

5. Troubleshooting------------------------------------ 11

6. Service points -------------------------------------- 16

7. Wiring diagram ------------------------------------- 27

8. Disassembly diagram----------------------------- 33

9. Replacement parts list---------------------------- 35

10.RS-232C communication ------------------------ 36

11.Block diagram -------------------------------------- 42

12.Connector connection diagram ---------------- 43

13.Basic circuit diagram------------------------------ 44

Contents

Warning

The technical information and parts shown in this

manual are not to be used for: the development,

design, production, storage or use of nuclear, chemical,

biological or missile weapons or other weapons of

mass destruction; or military purposes; or purposes that

endanger global safety and peace. Moreover, do not

sell, give, or export these items, or grant permission for

use to parties with such objectives. Forward all inquiries

to the SUPPLIER.

PJ650

PJ650 (C3XM4)

1. Features

High brightness high resolution

Full connectivity

Easy and flexible keystone adjustment

My screen

Wide angle lens

Low noise

2. Specifications

Liquid

Crystal

Panel

Drive system TFT active matrix

Panel size 1.8cm (0.7type)

Number of pixels 1024 (H) × 768 (V)

Lamp 150W UHB

Video Input System NTSC,PAL(BGDHI),SECAM,PAL-M,PAL-N,NTSC4.43,PAL60

Level Composite 1.0±0.1Vp-p(75Ωtermination)

S-Video Y : 1.0±0.1Vp-p(75Ωtermination)

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

0.3±0.1Vp-p

(PAL/SECAM burst signal,75Ωtermination)

Component Y : 1.0±0.1Vp-p(75Ωtermination)

CB/PB : 0.7±0.1Vp-p(75Ωtermination)

CR/PR : 0.7±0.1Vp-p(75Ωtermination)

RGB input /

output

Analog RGB 0.7V p-p (75Ωtermination)

Sync. TTL level

Audio

Input 200mVrms,47kΩ

Output 200mVrms,output impendance 1kΩ

Speaker output 1.0W(mono)

Power supply AC100~120V / 2.7A , AC220~240V / 1.3A

Power consumption 240W

Dimensions 295(W) × 87.5(H) × 237(D) mm

Weight 2.7kg (6.04lbs)

Temperature Operation : 0~35°C Storage : -20~60°C

Accessories POWER cord × 3

RGB cable × 1

Video/Audio cable × 1

USB mouse cable × 1

Remote control transmitter × 1

Battery × 2

Soft case × 1

CD-ROM (User's guide) × 1

Quick start guide × 1

ViewSonic Corporation PJ650

PJ650 (C3XM4)

PJ650

3. Names of each part

Parts names

ANDBY/ONINPUTKEYSTONERESET

LANP

TENP

POWER

Zoom knob

Focus ring

Air filter

Elevator button

KEYSTONE button

STANDBY/ON button

INPUT button

RESET button

ANDBY/ONINPUTKEYSTONERESET

LANP

TENP

POWER

MENU button

LAMP LED

TEMP LED

POWER LED

Remote sensor

AC power inlet

S-VIDEO IN port

RGB IN 1 and 2 ports

AUDIO IN R and L ports

VIDEO IN port

CONTROL port

RGB OUT port

USB port

COMPONENT VIDEO port

Power switch

ViewSonic Corporation PJ650

PJ650

PJ650 (C3XM4)

Remote control transmitter

STANDBY/ON button

VIDEO button

MENU button

RGB button

BLANK button

SEARCH button

VOLUME button

MUTE button

KEYSTONE button

ASPECT button

AUTO button

MAGNIFY button

KEYBOARD buttons

FREEZE button

POSITION button

ESC button

, , ,

Cursor buttons

RESET button

ENTER button

ViewSonic Corporation PJ650

PJ650 (C3XM4)

PJ650

4-2 Ghost adjustment

Signals for internal adjustment







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 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.

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

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



































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





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

: means recommended.

4-1-2 Setting of condition before adjustment

1. Before starting adjustment, warm up the

projector for about 10 minutes.(Blank white)

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

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

3. Normalizing the video adjustment.

(Press the [MENU] button of the Remote control

transmitter to display the MAIN menu, and then

press the [RESET] button. And select the

[DEFAULT]. Next, open MAIN menu and press

the [ ] key to display the PICTURE1 menu, then

press the [RESET] key to set to [DEFAULT].)

*note :The MAIN and PICTURE1 menu is not

reset with no signal.

4. Set the normal at OPT-WHISPER in the menu.

5. Reset KEYSTONE correction.

6. 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 MAIN 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).

ViewSonic Corporation PJ650

PJ650

PJ650 (C3XM4)

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.

4-4

NRSH adjustment

(vertical stripe adjustment)

Signals for internal adjustment

































Adjustment procedure

1. Make this adjustment after completing the

adjustment in 4-3 Flicker adjustment.

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

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 inconspicuous as possible.)

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

Adjustment menu to adjust vertical stripes of G

color.

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

Adjustment menu to adjust vertical stripes of B

color.

ViewSonic Corporation PJ650

PJ650 (C3XM4)

PJ650

4-5

White balance adjustment

(visual inspection)

Preparations

1. Perform these adjustments after the PSIG or

NRSH adjustment described in Section 4-4.

2. Reset gamma correction before adjustment.

Place the cursor on [GAMMA] in the Adjustment

menu, press the [RESET] key and select

[DEFAULT].

Adjustment procedure

1. First, adjust the G color.

2. Select GAMMA, SUB-CONTRAST, and G: in the

Adjust menu. If the background is white solid,

press the [ENTER] key on the Remote control

transmitter to change to [G] monochrome in the

28-tone grayscale.

3. Adjust GAMMA, SUB-CONTRAST, and G: in

the Adjust menu so that brightness of 28 steps

is best.

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

the Adjust menu. Because we want to keep the

best contrast ratio.

5. Then adjust colors R and B.

6. Select GAMMA, SUB-CONTRAST, and G: in

the Adjust menu. If the background is white

solid, press the [ENTER] key on the Remote

control trasmitter to change to [W] monochrome

in the 28-tone grayscale.

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

Adjust menu so that low-brigtness white

balance is best.

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

the Adjust menu so that middle-brightness white

balance is best.

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

brightness white balance of 28 steps is best.

ViewSonic Corporation PJ650

PJ650

PJ650 (C3XM4)











 

















 



4-6 Color uniformity adjustment

Preparations

1. Perform these adjustments after the white

balance adjustment described in Section 4-5.

2. Make a color uniformity adjustment for the

following four tones.

MIN tone (approx. 4% input signal)

MID-L tone (approx. 14% input signal)

MID-H tone (approx. 25% input signal)

MAX tone (approx. 57% input signal)

3. Place the cursor on the tone to be adjusted in

the Adjust menu and press the [ ] key. This

displays the Adjust Tone menu at the bottom of

the screen. Select the major adjustment lattice

point No. and color, and then adjust them.

4. The major adjustment lattice point numbers (a

total of 17 points) corresponds to the major

adjustment lattice point positions in the diagram

on the right. The color uniformity of the entire

screen can be adjusted by adjusting the white

balance for each of the points starting in order

from the low numbers.

5. Adjustment point No.1 should not be adjusted,

because it controls the brightness of the entire

screen.

6. To temporarily turn correction off, place the

cursor on “ON” in the Adjust Tone menu and

press the [ ] key. To turn it on again, place the

cursor on OFF in the Adjust Tone menu and

press the [ ] key.

7. Although this adjustment can also be made

using internal signals, we will here use the

[ENTER] key on the Remote control transmitter

to select the following two signals.

Solid monochrome adjustment color (use G

color adjustment when a color differential

meter is used).

Solid white (use for adjustment other than

above).

8. Reset color-shading correction before adjustment.

When 4 tones and all colors are to be reset,

place the cursor on [C.UNIF.] in the Adjustment

menu, press the [RESET] key and select

[DEFAULT].

When only 1 tone is to be reset, place the

cursor on the tone to be reset, press the

[RESET] key and select [DEFAULT].

Single tone and monochrome resets cannot

be performed.

Adjust menu

Adjust Tone menu

Major adjustment lattice point position

 





 

  

  

  

 



   





ViewSonic Corporation PJ650

PJ650 (C3XM4)

PJ650

Adjustment procedure 1

(when a color differential meter is used)

1. First adjust [MID-L] tone [G:].

2. Select adjustment point [No.2][G:].

When the background is not [G] monochrome,

press the [ENTER] key on the Remote control

transmitter to change to solid [G] monochrome.

3. Measure the illumination at adjustment points

No. 2, No.3, No.10 and No.11.

The values should be:

No.2 = Y2 [lx] No.10 = Y10 [lx]

No.3 = Y3 [lx] No.11 = Y11 [lx]

4. No.2 and No.3 adjustment point have the

average of Y2 and Y3.

Y2 = ( Y2 + Y3 ) / 2 ± 2 [%]

Y3 = ( Y2 + Y3 ) / 2 ± 2 [%]

5. No.10 and No.11 adjustment point have the

average of Y10 and Y11.

Y10 = ( Y10 + Y11 ) / 2 ± 2 [%]

Y11 = ( Y10 + Y11 ) / 2 ± 2 [%]

6. Then adjust [MID-L] tone [R] and [B].

When the background is [G] monochrome,

press the [ENTER] key on the Remote control

transmitter to change to solid white.

7. Measure the color coordinates of adjustment

point [No.1] and make a note of them.

Assume that they are x = x1, y = y1.

Note: When the CL-100 color and color

difference meter is used, the [ ](delta)

mode is convenient. When adjustment

point [No.1] color coordinate has been

selected, set the slide switch on the side to

[ ](delta) while holding down the [F] button

on the front panel. The measurement

shown after this displays the deviation from

measurement point 1.

8. Measure the color coordinates of measurement

point [No.2] and adjust [No.2][R:] and [B:] so

that the coordinates are as follows.

x = x1 ± 0.005 , y = y1 ± 0.010

9. Similarly, measure adjustment points [No.3] to

[No.17] and adjust their color coordinates

starting in order from the small number points.

This completes adjustments required for [MIN].

Note: Since excessive correction may lead to a

correction data overview during internal

calculations, use the following values for

reference.

[No.2] to [No.5] ± 40 or less

[No.6] to [No.9] ± 50 or less

[No.10] to [No.13] ± 70 or less

[No.14] to [No.17] ± 120 or less

10. Then adjust [MIN] tone [G] so that the

adjustment data set two times as much as

[MID-L] tone [G].

This completes [G] color adjustments.

11. Then adjust [MIN] tone [R] and [B].

Select [No.2] [B:] and press the [ENTER] key

on the Remote control transmitter to change to

solid white.

12. Measure the color coordinates of adjustment

point [No.1] and make a note of them.

Assume that they are x = x1, y = y1.

13. Now measure the color coordinates of

measurement point [No.2] and adjust [No.2][R:]

and [B:] so that the coordinates are as follows.

x = x1 ± 0.005 , y = y1 ± 0.010 (Target)

x = x1 ± 0.020 , y = y1 ± 0.040

14. Similarly, measure adjustment points [No.3] to

[No.17] and adjust their color coordinates

starting in order from the small number points.

This completes [MIN] tone adjustments.

15. Now make similar adjustments for [MID-H] tone.

(Adjust [MID-H] tone [G] so that the adjustment

data set half as many as [MID-L] tone [G].)

16. Now make similar adjustments for [MAX] tone.

(Adjust [MAX] tone [G] so that the adjustment

data set half as many as [MID-L] tone [G].)

ViewSonic Corporation PJ650

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