Hitachi ED-X31EP Bedienungsanleitung

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

Multimedia LCD Projector

March 2008

SM0313

ED-X31EP(C14B-20)

ED-X33EP(C14B-20)

SERVICE MANUAL

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 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 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

the power unit (circuit) or the power unit (ballast) after turning on the projector.

4. Do not touch the exhaust fan during operation.

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

do not hold the FPC of the LCD module assembly.

6. Use the cables which are included with the projector or as speciﬁed.

Service Warning

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 Hitachi Ltd.

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

2. Speciﬁcations ----------------------------------------------- 2

3. Names of each part---------------------------------------- 4

4. Adjustment---------------------------------------------------7

5. Troubleshooting ------------------------------------------ 14

6. Service points --------------------------------------------- 19

7. Wiring diagram-------------------------------------------- 34

8. Disassembly diagram ----------------------------------- 43

9. Replacement parts list ---------------------------------- 51

10.RS-232C communication ------------------------------ 52

11. Block diagram--------------------------------------------- 72

12.Connector connection diagram----------------------- 73

13.Basic circuit diagram ------------------------------------ 74

Contents

ED-X31GEP(C14D-20)

ED-X33GEP(C14D-20)

ED-X31E / ED-X33E (C14B-20)

1. Features

• High Brightness • Rich Connectivity

• Low Noise • Powerful Sound

2. Specifications

Liquid

crystal

panel

Drive system TFT active matrix

Panel size 1.6cm(0.63 type)

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

Lamp 220W UHB

Computer

signal

Computer IN

1Video : Analog 0.7Vp-p(75termination)

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

Composite sync. : TTL level

Computer OUT

Video:Analog 0.7Vp-p, 75output impedance (positive)

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

Composite sync.: TTL level

VIDEO

signal

VIDEO IN 1.0Vp-p (75termination)

S-VIDEO IN

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

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

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

COMPONENT

VIDEO

Y 1.0±0.1Vp-p, 75termination (positive)

CB/PB0.7±0.1Vp-p, 75termination (positive)

CR/PR0.7±0.1Vp-p, 75termination (positive)

AUDIO

signal

AUDIO IN 1 200mVrms, 47kor more (max. 2Vrms)

AUDIO IN 2

AUDIO IN 3 L/R 200mVrms, 47kor more (max. 2Vrms)

AUDIO OUT output impedance 1k(max. 2Vrms)

RS232C INPUT Hi: Max. 20V, Min. 2.6V Lo: Typ. –20.0V, Max. 0.8V

OUTPUT Hi: Typ. 8.0V, Min. 5.0V Lo: Typ. –7.0V, Max. –5.0V

USB

(Mouse)

I/O Level

(differential)

Amplitude of

differential signal

| (D+) - (D–) | > 0.2V

D+> 2.8V, D–< 0.3V or D+> 2.8V, D–< 0.3V

Amplitude of

signal

INPUT: “L” = 0.8V or less, “H” = 2.0V or more

OUTPUT: “L” = 0.3V or less, “H” = 2.8V ~ 3.6V

Audio output 7W

Power supply AC100~120V/3.5A, AC220~240V/1.5A

Power consumption 320W

Dimensions 340 (W) x 100 (H) x 270 (D) mm (Not including protruding parts)

Weight 3.5kg

Temperature range Operation : 5~35°C

Storage : -20~60°C

Accessories

Remote control x1

RGB cable x 1

Power cords x 2

Batteries x 2

User’s manuals x 1

LENS CAP and STRAP x 1

Audio/Video cable x 1

ED-X31GE / ED-X33GE (C14D-20)

1. Features

• High Brightness • Rich Connectivity

• Low Noise • Powerful Sound

2. Specifications

Liquid

crystal

panel

Drive system TFT active matrix

Panel size 1.6cm(0.63 type)

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

Lamp 230W UHB

Computer

signal

Computer IN

1Video : Analog 0.7Vp-p(75termination)

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

Composite sync. : TTL level

Computer OUT

Video:Analog 0.7Vp-p, 75output impedance (positive)

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

Composite sync.: TTL level

VIDEO

signal

VIDEO IN 1.0Vp-p (75termination)

S-VIDEO IN

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

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

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

COMPONENT

VIDEO

Y 1.0±0.1Vp-p, 75termination (positive)

CB/PB0.7±0.1Vp-p, 75termination (positive)

CR/PR0.7±0.1Vp-p, 75termination (positive)

AUDIO

signal

AUDIO IN 1 200mVrms, 47kor more (max. 2Vrms)

AUDIO IN 2

AUDIO IN 3 L/R 200mVrms, 47kor more (max. 2Vrms)

AUDIO OUT output impedance 1k(max. 2Vrms)

RS232C INPUT Hi: Max. 20V, Min. 2.6V Lo: Typ. –20.0V, Max. 0.8V

OUTPUT Hi: Typ. 8.0V, Min. 5.0V Lo: Typ. –7.0V, Max. –5.0V

USB

(Mouse)

I/O Level

(differential)

Amplitude of

differential signal

| (D+) - (D–) | > 0.2V

D+> 2.8V, D–< 0.3V or D+> 2.8V, D–< 0.3V

Amplitude of

signal

INPUT: “L” = 0.8V or less, “H” = 2.0V or more

OUTPUT: “L” = 0.3V or less, “H” = 2.8V ~ 3.6V

Audio output 10W x 1

Power supply AC100~120V/3.5A, AC220~240V/1.5A

Power consumption 320W

Dimensions 340 (W) x 100 (H) x 270 (D) mm (Not including protruding parts)

Weight 3.5kg

Temperature range Operation : 5~35°C

Storage : -20~60°C

Accessories

Remote control x1

RGB cable x 1

Power cords x 2

Batteries x 2

User’s manuals x 1

LENS CAP and STRAP x 1

Audio/Video cable x 1

ED-X31E / ED-X33E (C14B-20)

3. Names of each part

Projector

(1) Lamp cover

The lamp unit is inside.

(2) Focus ring

(3) Zoom ring

(4) Control panel

(5) Elevator buttons (x 2)

(6) Elevator feet (x 2)

(7) Remote sensor

(8) Lens

(9) Lens cover

(10) Intake vents

(11) Filter cover

The air filter and intake vent are

inside.

(12) Speaker

(13) Exhaust vent

(14) AC inlet

(15) Power switch

(16) Rear panel

(17) Security bar

(18) Security slot

ŹHOT! : Do not touch around the lamp cover and the exhaust vents during use

or just after use, since it is too hot.

ŹDo not look into the lens or vents while the lamp is on, since the strong light is not good for your

eyes.

ŹDo not handle the elevator buttons without holding the projector, since the projector may drop

down.

WARNING

ŹMaintain normal ventilation to prevent the projector from heating up. Do not

cover, block or plug up the vents. Do not place anything that can stick or be sucked to the vents,

around the intake vents. Clean the air ﬁlter periodically.

ŹDo not use the security bar and slot to prevent the projector from falling down, since it is not

designed for it.

CAUTION

HOT!

(1) (2) (3) (4)

(7)

(10)

(9)

(8) (11)

(6)

(5)

(13)

(12)

(6)

(18)

(16)

(17)

(15)

(14)

(4)

(13) (1)

(10)

(11)

HOT!

ED-X31E / ED-X33E (C14B-20)

Control panel

(1) STANDBY/ON button

(2) INPUT button

(3) MENU button

It consists of four cursor buttons.

(4) POWER indicator

(5) TEMP indicator

(6) LAMP indicator

Rear panel

(1) (2)(3)

(4)

(6)

(5)

(1) AUDIO IN1 port

(2) AUDIO IN2 port

(3) AUDIO OUT port

(4) COMPUTER IN1 port

(5) COMPUTER IN2 port

(6) MONITOR OUT port

(7) Shutdown switch

ŹUse the shutdown switch only when the projector is not turned off by normal procedure,

since pushing this switch stops operation of the projector without cooling it down.

CAUTION

(8) CONTROL port

(9) USB port

(10) COMPONENT

(Y, Cb/Pb, Cr/Pr) ports

(11) VIDEO port

(12) S-VIDEO port

(13) AUDIO IN3 (L,R) ports

(8) (4) (5) (6) (7)

(9) (13) (12) (3)(11) (10) (2)

(1)

ED-X31E / ED-X33E (C14B-20)

Remote control

WARNING ŹDo not look into the beam outlet and point the beam at people and pets while pressing

the LASER button, since the beam is not good for eyes.

CAUTION Ź

Note that the laser beam may result in hazardous radiation exposure. Use the laser pointer

only for pointing on the screen.

(1) VIDEO button

(2) COMPUTER button

(3) SEARCH button

(4) STANDBY/ON button

(5) ASPECT button

(6) AUTO button

(7) BLANK button

(8) MAGNIFY - ON button

(9) MAGNIFY - OFF button

(10) MY SOURCE/DOC.CAMERA button

(11) VOLUME - button

(12) PAGE UP button

(13) PAGE DOWN button

(14) VOLUME + button

(15) MUTE button

(16) FREEZE button

(17) MY BUTTON - 1 button

(18) MY BUTTON - 2 button

(19) KEYSTONE button

(20) POSITION button

(21) MENU button

(22) Ÿ/ź/Ż/Źcursor buttons

(23) ENTER button

(24) ESC button

(25) RESET button

(26) Battery cover

Back of

the remote control

(2)

(1)

(6)

(5)

(16)

(8)

(9)

(19)

(17)

(20)

(22)

(24)

(10)

(4)

(3)

(7)

(12)

(14)

(11)

(13)

(15)

(18)

(21)

(23)

(25)

(26)

VIDEO

DOC.CAMERA

KEYSTONE

ASPECT SEARCH BLANK

MUTE

MY BUTTON

POSITION

ESC

ENTER

RESET

COMPUTER MY SOURCE/

AUTO

R007

MAGNIFY

PAGE

VOLUME

DOWN

࡯

OFF

㧗

FREEZE

ED-X31E / ED-X33E (C14B-20)

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

Flicker

(Chap.4-2)

Ghost

(Chap.4-3)

DC OFF

(Chap.4-4)

E-POS

(Chap.4-5)

White

balance

(Chap.4-6)

Color

uniformity

(Chap.4-7)

Dichroic

optics unit

LCD/LENS

prism

assembly

PWB

assembly

Main

Lamp

unit

assembly

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

: means recommended.

4-1-2 Setting of condition before adjustments

1. Before starting adjustments, warm up projector

for about 10 minutes.

Turn off the automatic keystone function in OPTION

Menu.

If you changed [AUTO KEYSTONE] from [TURN

ON] to [TURN OFF], set to the [TURN ON] after

adjustment.

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

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

3. Set the lens position to the center, using horizontal

and vertical lens shift dials.

4. Normalizing the video adjustments

Press the [MENU] button to display the EASY

menu. If Advanced menu comes up, move to the

Easy menu.

Select the RESET in the EASY menu and press

the [ ] or [ENTER] button to open the RESET dia-

log. Choose the EXECUTE with the [ ] button.

Note that the projector will not allow you to reset

its adjustment values with no signal input.

5. Perform all adjustments from the FACTORY

MENU. Operate as follows to display the FAC-

TORY MENU.

When you use the remote control...

a. Press the [MENU] button of the remote con-

trol to display the Easy menu. (If the Ad-

vanced menu appears, move to the 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 lon-

ger (the FACTORY MENU will appear).

When you use the keypad of the projector...

a. Press the

[ ],

[ ]

or [

] button of the pro-

jector to display the Easy menu. (If the Ad-

vanced menu appears, move to the Easy

menu.)

b. Select the RESET in the Easy menu, and

then press the [ ] or [ENTER] button.

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

press and hold the [ ] button together with

the [INPUT] button for 3 seconds or more (the

FACTORY MENU will appear).

ED-X31E / ED-X33E (C14B-20)

4-3 Ghost adjustment

Test pattern for the adjustment Adjustment procedure

1. Make this adjustment after completing the ad-

justment in the section 4-2.

Set 0 to the GHOST R, G, B in OPTION-SERVICE-

GHOST Menu.

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 6 steps.)

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

the FACTORY MENU to adjust so that G color

ghost is at a minimum.

4. 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 Flicker adjustment

(V.COM adjustment)

Test pattern for the adjustment Adjustment procedure

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.)

2. In the same way, use DAC-P - V.COM-G: in the

FACTORY MENU to adjust the G color flicker.

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

FACTORY MENU to adjust the B color flicker.

NOTE: The test pattern shown on the left some-

times has a horizontal line across the screen.

4-4

DC OFF adjustment

(vertical bars adjustment 1)

Test pattern for the adjustment Adjustment procedure

1. Make this adjustment after completing the ad-

justment in the section 4-3.

Use STRIPE - DCOFF - No. 0 - R : in the FACTO-

RY MENU and use it so that vertical bars are min-

imized.

3. In the same way, use STRIPE - DCOFF - No. 0 -

G : in the FACTORY MENU and use it so that

vertical bars

are minimized.

4. In the same way, use STRIPE - DCOFF - No. 0 -

B : in the FACTORY MENU and use it so that

vertical bars

are minimized.

Press ENTER key

30%

0/255

112/255

/255

112

/255

136

/255

160

/255

160

/255

136

/255

112

/255

128/255

ED-X31E / ED-X33E (C14B-20)

4-6

White balance adjustment

(visual inspection)

Preparations

1. Perform these adjustments after the adjust-

ments described in Section 4-5.

2. Reset gamma correction before adjustment.

Place the cursor on [GAMMA] in the FACTORY

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

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 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-brightness 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.

4-5

E-POS adjustment (vertical bars adjustment 2)

Test pattern for the adjustment Adjustment procedure

1. Make this adjustment after completing the ad-

justment in the section 4-4.

Use DAC -P - E-POS - R in the FACTORY MENU

and use it so that vertical bars are minimized.

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

and use it so that vertical bars

are minimized.

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

and use it so that vertical bars

are minimized.

112/255

ED-X31E / ED-X33E (C14B-20)

VID-AD

MIN

MID-1

MID-2 ... 6

MAX

DAC-P

GAMMA

C. UNIF.

No. 1 R 0

STRIPE

OPTION

C.UNIF

ON/OFF ON

OFF

G 0 B 0

Major adjustment lattice point No.

4-7 Color uniformity adjustments

Preparations

Perform these adjustments after the adjustments

described in the section 4-6.

2. Make a color uniformity adjustments for the fol-

lowing tones.

MIN tone (approx. 7% input signal)

MID-1 tone (approx. 14% input signal)

MID-2 tone (approx. 21% input signal)

MID-3 tone (approx. 29% input signal)

MID-4 tone (approx. 36% input signal)

MID-5 tone (approx. 50% input signal)

MID-6 tone (approx. 61% input signal)

MAX tone (approx. 75% input signal)

NOTE: The brightness level of the test patterns

in MID-4 and MID-6 is selectable.

3. Select the [C.UNIF.] in the FACTORY MENU

and press the [ ] key. This operation displays

the Adjust Tone menu (shown below) on the

bottom of the screen.

To choose the tone to be adjusted, press the [

] key and then use the [ ] or [ ] key.

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 ad-

justment 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.

To temporarily turn correction off, place the cur-

sor on [C.UNIF.] in the Adjust Tone menu and

press the [ ] key. The ON/OFF menu appears.

Place the cursor on [ON] with the [ ] key and

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

cursor on [OFF] and press the [ ] key.

7. Although this adjustment can also be made us-

ing internal signals, we will here use the [EN-

TER] key on the remote control to select the fol-

lowing two signals.

Solid monochrome adjustment color (use G

color adjustment when a color differential me-

ter is used).

Solid white (use for adjustment other than

above).

8. Reset color-shading correction before adjust-

ment.

When resetting all values of 8 tones and all

colors, place the cursor on [C.UNIF.] in the

FACTORY MENU, press the [RESET] key and

select RESET in the dialog.

When resetting only 1 tone, place the cursor

on the tone such as MID-1 to be reset, press

the [RESET] key and select RESET in the di-

alog.

Single tone and monochrome resets cannot

be performed.

FACTORY MENU

Major adjustment lattice point position

14 12

15 17

6 4 8

2 1 3

7 5 9

10 11

V/6

H/6 H/3 H/3 H/6

V/3

V/6

Adjust tone menu

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