Hitachi PJL1035 2 Bedienungsanleitung

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

and materials, various measures are provided in this Hitachi liquid crystal projector. Be sure to read cautionary

items described in the manual to maintain safety before servicing.

1. Features 2

2. Specifications 2

3. Names of each part 3

4. Adjustment 8

5. Troubleshooting 13

6. Service points 21

7. Dust cleaning 25

8. Block diagram 26

9. Wiring diagram 27

10.Basic circuit diagram 29

11.Connector connection diagram47

12.Disassembly diagram48

13.Replacement parts list 50

Contents

Caution

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

2. Never touch the lamp bulb with a finger 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 turning on the projector.

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

5.The LCD module ass'y is likely to be damaged. If replacing the LCD module ass'y, do not hold the FPC of

the LCD module ass'y.

Service Warning

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

Liquid Crystal Projector

February 2000

SM0503

PJL1035 2

SERVICE MANUAL CPX940WB

CPX940E

– 2 –

1. Features

High brightness, High resolution

Compact size, light weight for portability

RGB output terminal

RS232C Communication

Mouse emulation

Complies with VESA DDC1/2B specifications

Auto-adjustment function

2. Specifications

Liquid crystal

panel

Drive system TFT active matrix

Number of pixels 1024 (H) x 768 (V)

Lamp UHP lamp 150W

Video input

System

NTSC , 4.43NTSC , PAL , M-PAL , or SECAM (N-PAL : only compulsion mode)

Level

Composite 1.0Vp-p (75Ωtermination)

Y/C Y : 1.0Vp-p (75Ωtermination)

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

0.3Vp-p (PAL/SECAM burst signal, 75Ωtermination)

RGB input /

output

Video signal Analog RGB input

0.7Vp-p (75Ωtermination)

Sync signal H/V separate

TTL level

Audio Input 200mVrms, 20kΩor less

Output 0~200mVrms, 1kΩ

Speaker output 1W + 1W (stereo)

Power supply AC100~120V/2.9A,AC220~240V/1.3A (50/60Hz)

Power consumption 260W

Dimensions 248 (W) x 106 (H) x 336 (D) mm

Weight 4.5kg

Temperature range Operation : 0~35˚C

Storage : -20~60˚C

Accessories

Panel size 0.9 inches

Remote control 1 Video/Audio cable 1

POWER cord 3 Mouse cable 3

BATTERIES LR6 2 S-cable 1

RGB cable 1 Stereo mini cable 1

Mac adapter 1

– 3 –

3.Names of Each Part

Main Unit

Lens

Speaker

Remote control

sensor

• Use the remote control transmitter within the range of

about 16 feet from the remote control sensor and within

30° to both the left and right.

Cooling fan

(exhaust)

Handle

STANDBY / ON button

Power ON/OFF button.

OFF sets the unit in standby mode.

LAMP indicator

This lights or blinks when the lamp does

not light.

TEMP indicator

This blinks when fan is abnormal.

INPUT button

To select the input source.

Each time this button is pressed, the input

source is changed in sequence as shown

below.

ZOOM knob

Adjusts picture size.

FOCUS ring

Adjusts focus.

MENU button

Picture adjustments.

RESET button

Resets unit to factory settings.

Lens cap

MUTE button

Silences the sound. (Cancels the mute

when the unit is set in mute mode.)

RGB1 RGB2 VIDEO

ON indicator

This blinks in the standby mode and lights

in the operation mode.

RESET

MUTE

INPUT

LAMP

TEMP

STANDBY/ON

– 4 –

RGB input terminal

D-sub 15pin shrink terminal (1/2)

VIDEO input terminal

(on video-equipped models only)

S-VIDEO input terminal

Mini DIN 4pin connector

VIDEO input terminal

RCA Jack

AUDIO L/R input terminal

RCA Jack

AC IN socket

Connect the provided power cord.

MAIN POWER switch

Main power ON/OFF switch.

: OFF

: ON

RGB output terminal

D-sub 15pin shrink terminal

RGB output can be displayed

even in the standby mode.

CONTROL terminal

D-sub 15pin shrink terminal

AUDIO input terminal

Stereo mini jack (1/2)

AUDIO output terminal

(RGB/VIDEO)

Stereo mini jack

Remote control sensor

S-VIDEO IN

RGB IN

CONTROL

AUDIO

OUT

AUDIO IN

RGB OUT

VIDEO IN

AUDIO IN

MONO

– 5 –

Remote Control Transmitter

•The laser pointer on the remote control unit radiates the laser beam from the laser aperture.

•This laser pointer used as a stick (for indication).

∑Do not stare directly into the laser aperture or radiate the laser beam to other persons as the laser emitted

is a class 2 laser and it could damage you vision , etc.

Especially pay attention if children are present.

•The three labels below are caution labels for the laser beam.

LASER APERTURE

CAUTION

LASER RADIATION -

DO NOT STARE INTO BEAM

WAVE LEGTH : 670nm

MAX. OUTPUT : 1mW

CLASS 2 LASER PRODUCT

RADIAZIONI LASER

NON GUARDARE NEL RAGGIO LUCE

APPARECCHIO LASER DI CLASS 2

RAYONNEMENT LASER

MANUFACTURED

NE PAS REGARDER DANS

LE FAISCEAU APPAREIL August-97

A LASER DE CLASSE 2

LASER-STRAHLUNG

NICHT IN DEN STRAHL

BLICKEN LASAER KLASSE 2

MANUFACTURER

AVOID EXPOSURE-LASER

RADIATION IS EMITTED

FROM THIS APERTURE

Caution Cautions on use of the laser pointer.

LASER RADIATION

DO NOT STARE INTO BEAM

CLASS 2 LASER PRODUCT

WAVE LENGTH : 670nm

MAX. OUTPUT : 1mW

IEC60825-1 : 1993 + A1 :1997

MUTE button

Silences the sound. (Cancels the mute when

the unit is set in mute mode.)

VOLUME button

Adjusts volume. The sound is loud or low

while pressing the "+" or "-" button.

LASER button

Laser pointer ON button. Use as a stick (for

indication).

MOUSE LEFT button

Mouse left button is the left click of the

mouse. (bottom button)

RESET / RIGHT button

When displays the on-screen menus, resets

the menu item to factory settings.

When operates the mouse emulation, works

as right click of mouse in computer mode.

After moving the picture (POSITION ON),

resets the position to factory settings.

MOUSE ON button

Mouse emulation mode starts.

When menu are open or blank screen is

displayed or icon of position is displayed,

there are stopped and back light off.

TIMER ON / OFF button

Displays the setting time by count down.

STANDBY / ON button

Power ON/OFF button.

OFF sets the unit in standby mode.

FREEZE Button

Pressing this button displays a still picture

(by freezing).

MAGNIFY button

Pressing this button partially magnifies a

displayed picture.

POSITION button

Moves the picture by DISK PAD after

pressed the POSITION ON button.

(Only RGB signal input)

While the back light on, you can operate

POSITION.

DISK PAD

When the back light of MENU ON button

on, selects or adjusts the menu item.

When removes the on-screen menus,

works as mouse.

When the back light of the POSITION ON

button on, moves picture.

MENU ON button

Displays the on-screen menus.

And back light on.

While the back light on, you can operate

MENU.

BLANK ON button

The blank screen which is displayed by

pressing BLANK.

And the blank screen will be revealed

down by pressing BLANK again.

INPUT SELECT button

Selects the input source.

STANDBY/ON MUTE

POSITION ON

OFF

FREEZE

LASER

RESET

MOUSE ON

BLANK TIMER

RGB VIDEO

INPUT

MENU ON

RIGHT

VOLUME

MAGNIFY

– 6 –

Function for Service

When replacing the lamp, Reset the operating time of lamp.

Reset the lamp timer :

If you have replaced the lamp after the lamp replacement time had expired, perform the procedure explained below within 10

minutes after the power is turned on. The power will turn off automatically when the 10-minute period expires.

1) Press the RESET button on projector for 3 seconds or remote

control TIMER button for 3 seconds and display the total lamp used

time.

•When accumulated operation time of the lamp reaches 1700

hours (after the second time : 2000 hours), the following display

will appear at the bottom of the screen.

2) Press the RESET button on projector or remote control MENU ON

button during displaying the lamp used time.

3) Select the “0” on the screen using the MENU ( ) button or DISK

PAD.DISK PAD.

LAMP 1500 hr

LAMP 1500 0 CANCEL

Function Operation

Displayed the operating time of the lamp Press the RESET button of the projector or the TIMER

button of the remote control, for 3 seconds.

Reset the operating time of the lamp Press the RESET button of the projector or the remote

control MENU.

(During be displayed the operating time of the lamp.)

Displayed the operating time of the projector Press the MUTE button of the projector or the remote

control, for 3 seconds.

(During be displayed the operating time of the lamp.)

STANDBY/ON MUTE

POSITION ON

OFF

FREEZE

LASER

RESET

MOUSE ON

BLANK TIMER

RGB VIDEO

INPUT

MENU ON

RIGHT

VOLUME

MAGNIFY

123

RESET

1, 2

– 7 –

Message Table

On-screen display

The following messages are displayed on the screen.

MESSAGE Action

CHANGE THE LAMP

AFTER REPLACING LAMP,

RESET THE LAMP TIMER.

THE POWER WILL TURN

OFF AFTER * Hr.

The total lamp service time will exceed the lamp replacement time in * hours.

The lamp will go off automatically when the lamp replacement time is exceeded.

Replace with a new lamp before that. *1

The asterisk (*) indicates the number of hours remaining before the lamp goes

off automatically.

Blinking of

CHANGE THE LAMP

The total lamp service time has exceeded the lamp replacement time. The lamp

will go off automatically about 10 minutes after it starts blinking. Replace with a

new lamp.*2

NO INPUT IS DETECTED Signal is hot input.

SYNC IS OUT OF RANGE The horizontal frequency of the input signal exceeds the range of the projector, it

cannot be displayed.

Indicator display

The ON indicator, LAMP indicator and TEMP indicator will light or blink in the following cases.

CHANGE THE LAMP

AFTER REPLACING LAMP,

RESET THE LAMP TIMER.

The lamp has been in service for long. Replacement with a new lamp is

recommended. The lamp will go off automatically when the lamp replacement

time is exceeded. *1

*1 This message are not displayed after 3 minutes.

But this message are displayed when you turn on the power again.

*2 It is possible to again turn on the power, however the power will go off after about 10 minutes.

ON indicator LAMP indicator TEMP indicator Meaning Remedy

Lights orange Goes off Goes off Standby mode

Blinks green Goes off Goes off During warming up

Lights green Goes off Goes off During operation *1

Blinks orange Goes off Goes off During cooling down

Lights red Lights red Goes off Lamp cannot light *2 Cool projector by power off for 45

minutes.

If the indicator is still it, lamp may be

defective. Replace.

Lights red Blinks red Goes off Lamp is not inserted or the

lamp door open Securely insert the lamp or close the

lamp door.

Lights red Goes off Blinks red Cooling fan accidented Replace fan.

Blinks red Blinks red Goes off The total lamp service time has

exceeded the lamp

replacement time. Replace lamp and reset the

accumulated lamp operation time.

– 8 –

4. Adjustment

4 - 1 Before adjusting.

4-1-1 ADJUSTMENT menu.

The ADJUSTMENT menu is needed at all adjust-

ments.

How to set up ADJUSTMENT menu follow these;

a.Push the MENU button.

b.Keep the RESET button pushing for a several

seconds while the PICTURE menu is displayed.

Note: All parameters used in these adjustment are

printed in boldface as shown in Fig.4-2-a and

Fig.4-2-b.

ADJUSTMENT

PICTURE

4-1-3 Setting of condition before adjustment.

1. Apply heat-running for 10 minutes or more before

adjustment.

2. Project 40 inches size image with zoom set to the

widest.

3. Press the RESET button on the remote controller to

set picture adjustment to NORMAL.

4. Use a darkroom whose luminance is less than 2[lx].

VIDEO GAMMA DAC_P S/H

AIR-FLOW

SUB-BRIGHT

SUB-CONTRAST

WHITE-POSI

BLACK2-POSI

V. COM

C.UNIFORMITY

Fig.4-2-a Parameters in the DAC_P of

the ADJUSTMENT menu.

Fig.4-1 ADJUSTMENT menu

VIDEO GAMMA DAC_P S/H

S/H TIMING

GHOST

SUB H POSI

REFRESH

Fig.4-2-b Parameters in the S/H of the

ADJUSTMENT menu.

4-1-2 Selection of adjustment.

When any parts in the table 4-1 is changed, choose

the profer adjusting items with the chart. Keep the

adjusting order, from upper to lower in it. For example,

adjust "White balance" firstly and "Ghost" next at

replacement of the PWB ass'y color.

Replaced part

Adjustment

P.O.filter

(Chap.4-2) White balance

(Chap.4-3) Ghost

(Chap.4-4)

Dichroic optics unit Yes No No

LCD/LENS prism ass'y Yes Yes Yes

PWB ass'y drive No Yes Yes

PWB ass'y color No Yes No

"Yes" means need for adjustment, "No" means no need for adjustment.

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

– 9 –

PJL1035-2

4 - 2 P.O.filter adjustment.

Before adjusting, input the 0.0Vp-p signal to check the

black image. If the image is not as dark as other set,

continue this procedure.

1. Make sure the AC power cord is unplugged.

2. Remove the PWB ass'y DRIVE and the DUST

COVER.

3. Loosen the screws on P.O.filters for GREEN and

RED. (See Fig.4-3-(a).)

Remark: Don't touch the screw on the P.O.filter for

BLUE.

4. Put back the PWB ass'y DRIVE where it belongs

without screws and make connections with

peripheral devices. Then get on the projector.

5. Use the XGA VESA(60) timing signal to Input

0.0Vpp black pattern.

6. Slide the P.O.filter for GREEN on its base to find

out where a whole image is darkest by visual

check. At the best position, tighten the screw a little

so that the filter cannot shift. (See Fig.4-3-(b).)

7. Slide the P.O.filter for RED on its base in order to

get rid of the reddish tint of the image by visual

check. After finding out the best position, tighten

the screw in a little order not to change the color of

the image. (See Fig.4-3-(b).)

8. Remove the PWB ass'y DRIVE again to tighten up

the screws of both P.O.filters.

9. Put on the DUST COVER and the PWB ass'y

DRIVE and make original connections with all of

peripheral parts.

10. Reinstall the UPPER CASE and tighten all

screws.

LCD panels PROJECTION LENS

Don't touch

this screw.

a screw on

P.O.filter-B

a screw on

P.O.filter-G

P.O.filter-B

PWB ass'y DRIVE

Screw driver

Screw Screw

P801 P701

P901

Fig.4-3-(a) Top view of P.O.filters Fig.4-3-(b) How to tighten screws

Caution: Avoid damaging LCD

panels or their cables.

– 10 –

4-3-2 Adjustment of color uniformity

1. Input gray pattern at 0.35Vp-p with a timing signal

of XGA VESA(60).

2. Set C.UNIFORMITY - SWITCH in the adjustment

menu to OFF.

3. Check the color unevenness of the original image.

4. Continue this adjustment unless color uniformity is

good.

5. Set C.UNIFORMITY - SWITCH in the adjustment

menu to ON.

6. Adjust following parameters to make better color

balance with same input signal.

a.Adjust "C. UNIFORMITY - H - R -RP" so that color

balance of left and right side is best by visual

check.

This is control correction wave for Horizontal Saw.

b.Adjust "C. UNIFORMITY - H - R -PB" so that color

balance of center and side is best by visual check.

This is control correction wave for Horizontal

Parabola.

c. Adjust "C. UNIFORMITY - H - B -RP" so that color

balance of left and right side is best by visual

check.

This is control correction wave for Horizontal Saw.

d.Adjust "C. UNIFORMITY - H - B -PB" so that color

balance of center and side is best by visual check.

This is control correction wave for Horizontal

Parabola.

e.Adjust "C. UNIFORMITY - V - B -RP" so that color

balance of top and bottom is best by visual check.

This is control correction wave for Vertical Saw.

"C. UNIFORMITY - H - R -RP"

: horizontal correction for R horizontal Saw

"C. UNIFORMITY - H - R -PB"

: horizontal correction for R horizontal Parabola

"C. UNIFORMITY - H - B -RP"

: horizontal correction for B horizontal Saw

"C. UNIFORMITY - H - B -PR"

: horizontal correction for B horizontal Parabola

"C. UNIFORMITY - V - B -RP"

: vertical correction for B vertical Saw.

4 - 3 White balance adjustment

Preparations for adjustment

4-3-1 Flicker adjustment.

Refer to the attached drawing (Fig.4-4).

1. Use the XGA VESA(60) timing signal to input a

0.35Vp-p R primary color signal for every other line.

2. Use DAC_P - V.COM - R in the adjustment menu to

adjust until flicker is minimum on a whole image.

3. Use the XGA VESA(60) timing signal to input a

0.35Vp-p G primary color signal for every other line.

4. Use DAC_P - V.COM - G in the adjustment menu

to adjust until flicker is minimum on a whole image.

5. Use the XGA VESA(60) timing signal to input a

0.35Vp-p B primary color signal for every other line.

6. Use DAC_P - V.COM - B in the adjustment menu to

adjust until flicker is minimum on a whole image.

Adjust it so that flicker is the lest.

R or G or B

Black

Fig.4-4 Test pattern for the flicker adjustment.

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