Hitachi CP-X980W Manuel utilisateur

SERVICE MANUAL

P4X/P4XM chassis

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

Multimedia LCD Projector

April 2001 Digital Media Systems Division

CP-X980W

CP-X985W

Contents

Caution

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 LDC Projector. Be sure to

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

Service Warning

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 (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 module assembly, do not hold

the FPC of the LCD module assembly.

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

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

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

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

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

6. Service points ------------------------------------------ 20

7. Block diagram ------------------------------------------ 23

8. Wiring diagram ----------------------------------------- 24

9. Basic circuit diagram ---------------------------------- 28

10.Connector connection diagram --------------------- 77

11.Disassembly diagram --------------------------------- 79

12.Replacement parts list -------------------------------- 81

13.RS-232C communication ---------------------------- 82

CP-X980W

CP-X985W

1. Features

High brightness, High resolution

Compact size, light weight for portability

RGB output terminal

RS-232C Communication

Mouse emulation

Power zoom and power focus functions

Complies with VESA DDC1/2B specifications

Auto-adjustment function

2. Specifications

Liquid crystal

panel

Lamp

Video input

Drive system

Panel size

Number of pixels

System

Level

System

Level

RGB

Audio

Speaker output

Power supply

Power consumption

Dimensions

Weight

Temperature range

Accessories

Digital input

Input

Output

Analog

input/output

TFT active matrix

1.3 inches

1024 (H) × 768 (V)

250W UHB

Composite

Component

Y/C

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

480i, 480p, 575i, 720p, 1035i, 1080i

Y 1.0Vp-p (75 termination)

Cb/Cr 0.7Vp-p (75 termination)

Pb/Pr 1.0Vp-p (75 termination)

Type T.M.D.S

Video signal DC:150~1200mV, AC:1.56Vp-p

Sync signal TTL level

Type R.G.B separate

Video signal 0.7Vp-p (75 termination)

Sync signal H/V separate or composite, TTL level

200mVrms, 20k or less

0~200mVrms, 1k

1.2W + 1.2W (stereo)

AC100~120V/4.5A, AC220~240V/2.2A

400W

289 (W) ×124 (H) ×350 (D) mm

6.4kg (14lbs)

Operation : 0~35°C

Storage : -20~60°C

Remote control transmitter ×1

RGB cable ×1

Video/Audio cable ×1

Mouse cable ×1

Composite

Y/C

1.0Vp-p (75 termination)

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

Y : 1.0Vp-p (75 termination)

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

Component cable ×1

POWER cord ×3

BATTERIES LR6 ×2

CP-X980W

CP-X985W

3. Names of each part

Parts names

Use the remote control transmitter in front of the remote control sensor at a

distance of about 5 m or less and an angle of 30 degrees to the left or right of

the center.

ZOOM Button

Used to adjust the size of the image.

MUTE Button

This button turns the sound on and

off. Press once to turn the sound off;

then press again to turn the sound

back on.

STANDBY / ON Button

Press this button to turn the power on

and off. When turned off, the

projector enters standby status.

LAMP Indicator

This lamp lights or blinks when the

lamp is off.

POWER Indicator

This indicator lights or blinks during

standby and during operation.

FOCUS Button

Used to adjust the focus of the image on

the screen.

INPUT Button

Press this button to switch the input. The

input changes in the following sequence

each time this button is pressed.

MENU Button

Displays the image menu.

RESET Button

Used to reset the initial settings.

TEMP Indicator

This indicator lights or blinks when the

internal temperature of the projector

rises and when the fan malfunctions.

RGB1 RGB2 DIGITAL

COMPONENT

S-VIDEO

VIDEO

Remote Control Sensor

Lens

Foot Adjuster

Lens Cap

Control Panel

Ventilation Openings

(exhaust)

Carrying Handle

Air Filter and Intake

for the Cooling Fan

Foot Adjuster

Control Panel

Front/Right View

CP-X980W

CP-X985W

Remote Control Sensor

AC Inlet

Used to connect the accessory power cord.

Speaker

Power Switch

Used to turn the power on and off.

: OFF

: ON

Terminal Panel

(Refer below)

Rear/Left View

DIGITAL Terminal

Digital video receptacle

S-VIDEO Terminal

Mini DIN 4-pin connector

VIDEO Terminal

RCA jack

AUDIO(MONO)/L

Terminal

RCA jack

AUDIO R Terminal

RCA jack

USB Terminal

The mouse cursor can be

controlled by remote control

by connecting to a personal

computer.

RGB IN 1 Terminal

D-sub 15-pin shrink

RGB IN 2 Terminal

D-sub 15-pin shrink

RGB OUT Terminal

D-sub 15-pin shrink

CONTROL Terminal

D-sub 15-pin shrink

AUDIO IN RGB1

Terminal

Stereo mini-pin jack

AUDIO IN RGB2

Terminal

Stereo mini-pin jack

AUDIO OUT

Terminal

Stereo mini-pin jack

COMPONENT VIDEO

Y Terminal

RCA jack

Terminal

RCA jack

Terminal

RCA jack

Terminal Panel

Caution Connecting to the AC Inlet

Make sure the accessory power cord is plugged

into the AC Inlet as far as it will go. Incomplete

connection can result in fire or electrical shock.

CP-X980W

CP-X985W

WARNING

The laser pointer of the remote control transmitter is used in place of a finger or rod. Never look

directly into the laser beam outlet or point the laser beam at other people. The laser beam can

cause vision problems.

STANDBY/ON Button

BLANK Button

Disk Pad

AUTO Button

MENU Button

MENU SELECT Button

,,, Button

MAGNIFY Button

Used to operate the

mouse shift function

and left click function.

Used to click the

left mouse button.

Used to operate the

mouse shift function.

VIDEO Button

LASER Button

RGB Button

MOUSE / RIGHT Button

POSITION Button

RESET Button

FREEZE Button

VOLUME Button

MUTE Button

ZOOM Button

Used to click the

right mouse button.

Used to click the

right mouse button.

REMOTE CONTROL TRANSMITTER

NOTE: To prevent any malfunction;

• Do not give the Remote control transmitter any physical impact. Take care not to drop.

• Do not place the heavy objects on the Remote control transmitter.

• Do not wet the Remote control transmitter or place it on any wet object.

• Do not place the Remote control transmitter close to the cooling fan of the projector.

• Do not disassemble the Remote control transmitter in case of malfunction. Please bring it to the service station.

: These functions works when the mouse control function is activated. Remember, the POSITION,

BLANK ON and MENU ON functions disable the mouse control function.

PinP Button

FOCUS Button

CP-X980W

CP-X985W

Message table

On-screen display

The following messages are displayed on the screen.

"CHANGE THE LAMP"

"AFTER REPLACING LAMP, RESET

THE LAMP TIMER"

"CHANGE THE LAMP"

"AFTER REPLACING LAMP,

RESET THE LAMP TIMER"

"THE POWER WILL TURN OFF

AFTER 20 Hr."

Blinking of "CHANGE THE LAMP"

"AFTER REPLACING LAMP,

RESET THE LAMP TIMER"

"THE POWER WILL TURN OFF

AFTER 0 Hr."

"NO INPUT IS DETECTED"

"SYNC IS OUT OF RANGE"

Lamp has 1,300 hours on it and may need to be changed.

Lamp has 1,979 hours on it.

See P.6 "Reset the lamp timer"

When the lamp has 1,300 hours or more on it, the message will blink, and

the power will turns off after 10 minutes.

Signal is not input.

The horizontal or vertical frequency of the input signal exceeds the range

of the projector, it cannot be displayed.

Indicator display

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

Lamp is not inserted or

lamp door is not closed.

Securely insert the lamp or

close the lamp door.

POWER indicator LAMP indicator TEMP indicator

Meaning Remedy

Lights orange

Lights red

Lights green

Blinks green

Blinks orange

Standby mode

During warming up

During operation

During cooling down

Lamp cannot light

Cool projector by power off for

60 minutes.

If the indicator is still lit, lamp

may be defective. Replace.

Blinks red

Blinks red Cooling fan accidented Replace fan.

Goes off

When inside temperature becomes high, to protect the projector, the lamp may be turned off and the lamp indicator

lights red, or the projector will be shut down and the all indicator display goes off.

CP-X980W

CP-X985W

4. Adjustment

4 - 1 Before adjusting

1. Before starting adjustment, warm up the projector

for about 10 minutes. (Blank white)

2.Set Zoom Wide to Max. and project an image a

distance of more than 40 inches.

3.Normalizing the video adjustment.

(Press the [MENU] button of the Remote control

transmitter to display the Setup menu, then press

the [RESET] button. And select the [DEFAULT].)

*note : The setup menu is not displayed on with no

signal.

4. 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 Setup 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).

4 - 2 Ghost adjustment

Signals for internal adjustment

30%

112/255

bit

0/255

bit

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 16, 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 - 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.

CP-X980W

CP-X985W

4 - 4

NRSH adjustment (vertical stripe adjustment)

Signals for internal adjustment

192

/255

bit

168

/255

bit

144

/255

bit

120

/255

bit

/255

bit

/255

bit

/255

bit

/255

bit

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 12 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.

4 - 5 White balance adjustment

Preparations

1.Perform these adjustment after the 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].

Now press the [RESET] key again and press the

[MGNIFY-OFF] button of the Remote control

transmitter for 5 seconds or more (the confirming

to "MICRO" reset menu will appear).

Adjustment procedure

1. First, adjust the G color.

BRIGHT and CONTRAST set to MAX in the Setup menu.

3. Place the cursor on Slide Show in the Adjustment

menu [A/D], press the [ ] key three times to display

G monochrome and adjust the illuminance at the

center of the screen. Make a note of the setting (here

assumed to be A [lx]). Press the MENU key to return.

BRIGHT and CONTRAST is returned to default in the

Setup menu.

5. Adjust Gamma, 93%, and G: in the Adjust menu so

that illuminance (Y) at the center of the screen is

adjusted as follows.

Y = A x 0.84 2 [%]

6. Adjust Gamma, 86%, and G: in the Adjust menu so

that illuminance (Y) at the center of the screen is

adjusted as follows.

Y = A x 0.71 2 [%]

7. Adjust Gamma, 75%, and G: in the Adjust menu so

that illuminance (Y) at the center of the screen is

adjusted as follows.

Y = A x 0.53 2 [%]

8. Adjust Gamma, 43%, and G: in the Adjust menu so

that illuminance (Y) at the center of the screen is

adjusted as follows.

Y = A x 0.155 2 [%]

9. Adjust Gamma, 29%, and G: in the Adjust menu so

that illuminance (Y) at the center of the screen is

adjusted as follows.

Y = A x 0.0635 2 [%]

10.Adjust Gamma, 14%, and G: in the Adjust menu so

that illuminance (Y) at the center of the screen is

adjusted as follows.

Y = A x 0.015 2 [%]

CP-X980W

CP-X985W

11.Before adjusting Gamma, 0%, and [G:], adjust

Gamma, 0%, R: and B: so that the following

values.

[0%][R:] = -128

[0%][B:] = -128

12.Adjust Gamma, 0%, and G: in the Adjust menu so

that illuminance (Y) at the center of the screen is

adjusted as follows.

Y = A x 0.0055 2 [%]

But adjustment value is set to [-68] ~ [0].

13.Now, adjust the R and B colors.

14.Place the cursor on [BLACK-REF] in the Adjustment

menu [GAMMA]. Then measure the color

coordinates at the center of the screen and take a

note of the setting (here assumed to be x1, y1).

15.Adjust Gamma, 86%, R: and B: so that the color

coordinates (x, y) at the center of the screen take

on the following values.

x = 0.282 0.001

y = 0.340 0.002

16.Adjust Gamma, 93%, R: and B: so that the

following values.

[93%][R:] = [86%][R:]

[93%][B:] = [86%][B:]

17.Adjust Gamma, 75%, R: and B: so that the color

coordinates (x, y) at the center of the screen take

on the following values.

x = 0.282 0.001

y = 0.340 0.002

18.Adjust Gamma, 43%, R: and B: so that the color

coordinates (x, y) at the center of the screen take

on the following values.

x = 0.280 0.001

y = 0.340 0.002

19.Adjust Gamma, 29%, R: and B: so that the color

coordinates (x, y) at the center of the screen take

on the following values.

x = 0.275 0.001

y = 0.333 0.002

20.Adjust Gamma, 14%, R: and B: so that the color

coordinates (x, y) at the center of the screen take

on the following values.

x = 0.260 0.001

y = 0.315 0.002

21.Adjust Gamma, 0%, R: and B: so that the color

coordinates (x, y) at the center of the screen take

on the following values.

x = x1 + 0.005 0.001

y = y1 + 0.005 0.002

Adjustment operations (reference)

93% operation

014 29 43 86 9375 100

Brightness

Adjustment

point

Input signal (%)

86% operation

014 29 43 86 9375 100

Brightness

Adjustment

point

Input signal (%)

75% operation

014 29 43 86 9375 100

Brightness

Adjustment

point

Input signal (%)

43% operation

014 29 43 86 9375 100

Brightness

Adjustment

point

Input signal (%)

29% operation

014 29 43 86 9375 100

Brightness

Adjustment

point

Input signal (%)

14% operation

014 29 43 86 9375 100

Brightness

Adjustment

point

Input signal (%)

0% operation

014 29 43 86 9375 100

Brightness

Adjustment

point

Input signal (%)

CP-X980W

CP-X985W

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

three tones.

MIN tone (approx. 18% input signal)

MID tone (approx. 50% input signal)

MAX tone (approx. 75% 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, 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 [MENU

SELECT] 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 3 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

VIDEO

DAC-P S/HC. UNIF.

No. 1 R 0

LEVEL MIN MID MAX

OFF

G 0 B 0

Adjust Tone menu

Major adjustment lattice point No.

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

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