Hitachi CP-X255 Manuel utilisateur

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

Multimedia LCD Projector

November 2005 Digital Media Division

SM0560

CP-S245(CC9SMN)

CP-X255(CC9XMN)

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 replace the lamp, to avoid burns to your ﬁngers. The lamp becomes too 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 (circuit) and power unit (ballast), after 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 assembly,

do not hold the FPC of the LCD module assembly.

6. Use the cables which are included with the projector or 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 ---------------------------------3

4. Adjustment --------------------------------------------6

5. Troubleshooting------------------------------------ 12

6. Service points -------------------------------------- 18

7. Wiring diagram ------------------------------------- 33

8. Disassembly diagram----------------------------- 41

9. Replacement parts list---------------------------- 48

10.RS-232C commands ----------------------------- 50

11.Block diagram -------------------------------------- 59

12.Connector connection diagram ---------------- 60

13.Basic circuit diagram------------------------------ 61

Contents

ED-X8255(CC9XMN)

PJ656(CC9XM)

CP-S245(CC9SMN)/CP-X255/ED-X8255(CC9XMN)

1. Features

• High Brightness

• Low Noise

• Rich Connectivity

•Compact Body

2. Specifications

CP-S245CP-X255 / ED-X8255

Liquid crystal

panel

Drive system TFT active matrix

Panel size 1.5cm(0.6 type)

Number of pixels 800 (H) x 600 (V) 1024 (H) x 768 (V)

Lamp 180W UHB

RGB

signal

RGB IN 1Video : Analog 0.7Vp-p(75Ω termination)

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

Composite sync. : TTL level

RGB OUT*

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

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

Composite sync.: TTL level

VIDEO

signal

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)

COMPONENT

VIDEO

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

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

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

AUDIO

signal

AUDIO IN 1 200mVrms, 47kΩ or more (max. 3.0Vp-p)

AUDIO IN 2 L/R 200mVrms, 47kΩ or more (max. 3.0Vp-p)

AUDIO OUT 0~200mVrms, output impedance 1kΩ (max. 5.0Vp-p)

Speaker output 1W x 1

Power supply AC100~120V/3.1A, AC220~240V/1.7A

Power consumption 290W

Dimensions 306 (W) x 86 (H) x 249 (D) mm (Not including protruding parts)

Weight 3.0kg

Temperature range Operation : 5~35°C

Storage : -20~60°C

Accessories

Remote control x1

RGB cable x 1

Audio/Video cable x 1

Power cords x 3

Batteries x 2

User’s manuals x 1

Soft case x 1 (not ED-X8255)

*) This port is used as both RGB IN 2 and RGB OUT. Its function is selected with RGB IN/OUT switch.

PJ656(CC9XM)

1. Features

• High Brightness

• Low Noise

• Rich Connectivity

•Compact Body

2. Specifications

Liquid crystal

panel

Drive system TFT active matrix

Panel size 1.5cm(0.6 type)

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

Lamp 180W UHB

RGB

signal

RGB IN 1Video : Analog 0.7Vp-p(75Ω termination)

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

Composite sync. : TTL level

RGB OUT*

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

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

Composite sync.: TTL level

VIDEO

signal

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)

COMPONENT

VIDEO

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

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

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

AUDIO

signal

AUDIO IN 1 200mVrms, 47kΩ or more (max. 3.0Vp-p)

AUDIO IN 2 L/R 200mVrms, 47kΩ or more (max. 3.0Vp-p)

AUDIO OUT 0~200mVrms, output impedance 1kΩ (max. 5.0Vp-p)

Speaker output 1W x 1

Power supply AC100~120V/3.1A, AC220~240V/1.7A

Power consumption 290W

Dimensions 306 (W) x 83 (H) x 249 (D) mm (Not including protruding parts)

Weight 2.8kg

Temperature range Operation : 5~35°C

Storage : -20~60°C

Accessories

Remote control x1

RGB cable x 1

Audio/Video cable x 1

Power cords x 3

Batteries x 2

User’s manuals x 1

Soft case x 1

*) This port is used as both RGB IN 2 and RGB OUT. Its function is selected with RGB IN/OUT switch.

CP-S245(CC9SMN)/CP-X255/ED-X8255(CC9XMN)/PJ656(CC9XM)

3. Names of each part

Projector

●

WARNING

During use or immediately after use, do not touch around the lamp and vents of the pro-

jector. ( ) It could cause a burn.

Lens

Filter cover

(Air ﬁlter and intake vent

are inside.)

Elevator button

Elevator foot

Remote sensor

Zoom ring

Focus ring

Vent

Lamp cover

(Lamp unit is inside.)

Bottom side

Speaker

Lens cover

Security bar

(Use for attaching a

commercial anti-theft

chain or wire.)

Control buttons



Front-Right side

CP-S245(CC9SMN)/CP-X255/ED-X8255(CC9XMN)

AUDIO IN2

AUDIO OUT

CONTROL RGB IN1

RGB IN2 USB

RGB OUT

AUDIO IN1

LAN

LINK

ACT

VIDEO

S-VIDEO

AC inlet

Power switch

Elevator button

COMPONENT

VIDEO ports

CB/PB

CR/PR

S-VIDEO port

VIDEO port

CONTROL port

Elevator foot

Rear-Left side

Ports (See below.)

Vent

AUDIO-OUT port

Ports

AUDIO IN1 port

(In the default setting, the AUDIO

IN1 port is the audio port for the

RGB IN1 and RGB IN2 ports,

however, it is possible to change

the settings.)

AUDIO IN2 L/R port

(In the default setting, the

AUDIO IN2 L/R port is the audio

port for the VIDEO, S-VIDEO

and COMPONENT VIDEO

ports, however it is possible to

change the settings.)

RGB IN1 port

RGB IN2 /RGB OUT port

(Use the RGB IN OUT switch to select

RGB IN2 or RGB OUT for this port.)

RGB IN2 port: Inputs the RGB signal from

a PC.

RGB OUT port: When connected to a

monitor, outputs the signal input via RGB

IN1.

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.

Restart switch (*)

RGB IN OUT switch

Use this button to select either RGB IN2

or RGB OUT for the corresponding port.

When this switch is not pushed in, RGB

IN2 is selected.

When this switch is pushed in, RGB OUT

is selected.

USB port

LAN Port

Used for Ethernet input/output.

This port is used when utilizing network functions.

PJ656(CC9XM)

AUDIO IN2

AUDIO OUT

CONTROL RGB IN1

RGB IN2 USB

RGB OUT

AUDIO IN1

VIDEO

S-VIDEO

AC inlet

Power switch

Elevator button

COMPONENT

VIDEO ports

CB/PB

CR/PR

S-VIDEO port

VIDEO port

CONTROL port

Elevator foot

Rear-Left side

Ports (See below.)

Vent

AUDIO-OUT port

Ports

AUDIO IN1 port

(In the default setting, the AUDIO

IN1 port is the audio port for the

RGB IN1 and RGB IN2 ports,

however, it is possible to change

the settings.)

AUDIO IN2 L/R port

(In the default setting, the

AUDIO IN2 L/R port is the audio

port for the VIDEO, S-VIDEO

and COMPONENT VIDEO

ports, however it is possible to

change the settings.)

RGB IN1 port

RGB IN2 /RGB OUT port

(Use the RGB IN OUT switch to select

RGB IN2 or RGB OUT for this port.)

RGB IN2 port: Inputs the RGB signal from

a PC.

RGB OUT port: When connected to a

monitor, outputs the signal input via RGB

IN1.

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.

Restart switch (*)

RGB IN OUT switch

Use this button to select either RGB IN2

or RGB OUT for the corresponding port.

When this switch is not pushed in, RGB

IN2 is selected.

When this switch is pushed in, RGB OUT

is selected.

USB port

CP-S245(CC9SMN)/CP-X255/ED-X8255(CC9XMN)/PJ656(CC9XM)

SEARCH button

RGB button

VIDEO button

ASPECT button

HOME button

MAGNIFY

ON button

OFF button

END button

FREEZE button

POSITION button

ESC button

Remote control

Battery cover

(on the back)

STANDBY/ON button

AUTO button

BLANK button

PAGE UP button

VOLUME button

MUTE button

PAGE DOWN button

KEYSTONE button

MENU button

Cursor buttons

▲,▼,◄,►

ENTER button

RESET button

HOME

PAGE UP

PAGE DOWN

END

VIDEO RGB SEARCH

FREEZE

OFF

MAGNIFY

ASPECT AUTO BLANK

MUTE

VOLUME

KEYSTONE

POSITION

ESC

ENTER

RESET

Control buttons

LAMP indicator

TEMP indicator

POWER indicator

Cursor buttons

▲,▼,◄,►

STANDBY/ON button

INPUT button

CP-S245(CC9SMN)/CP-X255/ED-X8255(CC9XMN)/PJ656(CC9XM)

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)

Ghost

(Chap.4-3)

Flicker

(Chap.4-4)

White

balance

(Chap.4-5)

Color

uniformity

(Chap.4-6)

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).

CP-S245(CC9SMN)/CP-X255/ED-X8255(CC9XMN)/PJ656(CC9XM)

4-3 Ghost adjustment

Signals for internal adjustment

30%

112/255

30%

0/255

Adjustment procedure

1. Make this adjustment after completing the

adjustment in 4-2.

2. Choose Advance menu > OPTION > SERVICE

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

3. Open the FACTORY MENU and choose DAC-P

> GHOST > R,G and B to display each color of

test patterns for adjustments.

Confirm if there is ghosting on the both sides of

black pattern. If visible, perform this adjustment

as following procedure.

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 3 steps.

Then, if a ghost image is visible on the right of

an original image, raise the number by 1 step.)

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

the FACTORY MENU to adjust so that G color

ghost is at a minimum.

6. 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

Perform this adjustments only when the conver-

gence is not good.

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.

CP-S245(CC9SMN)/CP-X255/ED-X8255(CC9XMN)/PJ656(CC9XM)

4-4 Flicker adjustment

(V.COM adjustment)

Signals for internal adjustment Adjustment procedure

1. Make this adjustment after completing the

adjustment in 4-3 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.

4-5

White balance adjustment

(visual inspection)

Preparations

1. Perform these adjustments after the Flicker

adjustment described in Section 4-4.

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 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.

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