Hitachi cpx880, cpx885 Service Manual

No.0526E

CP-X880

SERVICE MANUAL

Caution

Be sure to read this manual before servicing. To assure safety from ﬁ re, 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.

CP-X885

(C8X) (C8XM)

Service Warning

1. When replace the lamp, to avoid burns to your ﬁ ngers. The lamp becomes too hot.

2. Never touch the lamp bulb with a ﬁ 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 module assembly, do

not hold the FPC of the LCD module assembly.

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

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

2. Speciﬁ cations-----------------------------------------2

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

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

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

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

7. Wiring diagram ------------------------------------- 31

8. Disassembly diagram----------------------------- 37

9. Replacement parts list---------------------------- 39

10.RS-232C communication ------------------------ 40

11.Block diagram -------------------------------------- 46

12.Connector connection diagram ---------------- 47

13.Basic circuit diagram------------------------------ 48

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

Multimedia LCD Projector

November 2002 Digital Media Division

1. Features

High brightness Full connectivity (BNC) Easy operation My screen Convenient lamp replacement

2. Specifications

Liquid crystal

panel

Lamp

RGB signal input

Video signal input

Signal output

Audio signal

Power supply

Power consumption

Weight

Temperature range

Accessories

Drive system

Panel size

Number of pixels

RGB IN

Digital input

AUDIO IN

COMPOSITE VIDEO

S-VIDEO

COMPONENT VIDEO

AUDIO IN

RGB OUT

AUDIO OUT

Input

Output (Speaker)

Signal

System

CB/CR

PB/PR

CP-X880/CP-X885

TFT active matrix

0.99 inches

1024 (H) × 768 (V)

275W UHB

Video: Analog 0.7Vp-p, 75 terminator H/V. sync.: TTL level (positive/negative) Composite sync.: TTL level D-sub 15-pin shrink jack

Type: T.M.D.S Amplitude differential signal: DC: 150~1200mV AC: 1.56Vp-p Amplitude signal: TTL level

200mVrms, 57k Stereo mini jack

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

1.0Vp-p, 75 terminator RCA jack

1.0Vp-p, 75 terminator

0.3Vp-p, 75 terminator

Mini DIN 4-pin jack

525i (480i), 525p (480p), 625i (575i), 720p, 1080i/1035i

1.0Vp-p, 75 terminator

0.7Vp-p, 75 terminator

200mVrms, 57k (max. 3.0Vp-p) RCA jack ×2

Video: Analog 0.7Vp-p, 75 output impedance (positive) H/V. sync.: TTL level (positive/negative) Composite sync.: TTL level D-sub 15-pin shrink jack

0~200mVrms, output impedance 1k Stereo mini jack

200mVrms, 57k

1W +1W (stereo)

AC100~120V/4.7A, AC220~240V/2.0A

430W

5.7kg (12.6lbs)

Operation : 0~35°C

Storage : -20~60°C

Remote control transmitter × 1 RGB cable × 1 Video/Audio cable × 1 USB cable × 1 RS-232C adapter (15P-9P) × 1

POWER cord × 3 Battery × 2 Carrying bag × 1 Operator's manual × 1 Safety manual × 1

RCA jack ×3, BNC ×3

3. Names of each part

Air filter

Elevator button

Elevator screw

COMPONENT indicator

S-VIDEO indicator

VIDEO indicator

DVI indicator

BNC indicator

RGB indicator

INPUT dial

ZOOM

button

FOCUS button

RESET button

MENU button

ONE TOUCH button

KEYSTONE button

TEMP indicator

LAMP indicator

Lens

Remote sensor

Lens cap

Elevator feet

Remote sensor

S-VIDEO IN port

VIDEO IN port

DVI port

RGB port

BNC port

AUDIO IN R/L port

AUDIO IN 1/2 port

AUDIO OUT port

REMOTE CONTROL port

CONTROL port

WIRELESS & NETWORK

MODULE port

RGB OUT port

USB port

COMPONENT VIDEO port

Power switch

STANDBY/ON

INPUT

KEYSTONE

RESET

LANP

TENP

ONE TOUCH

RGB

BNC

DVI

VIDEO

S-VIDEO

COMPONENT

FOCUS ZOOM

Control Panel

AC power inlet

STANDBY/ON button

Parts names

CP-X880/CP-X885

Remote control transmitter

ZOOM

buttons

Right mouse button

VIDEO button

LASER INDICATOR

RGB button

LASER button

FOCUS buttons

PAGE buttons

BLANK button

ASPECT button

ESC button

MENU button

POSITION button

MAGNIFY buttons

KEYSTONE button

REMOTE CONTROL port

Left /Right

Key buttons

Lever switch (*)

RESET button

AUTO button

PinP button

VOLUME button

MUTE button

FREEZE button

ONE TOUCH button

STANDBY/ON button

Mouse cursor movement Left mouse click

Right mouse click

WIRELESS button

Disk pad

Precautions to observe when using the remote control

• Do not disassemble the remote control.

• Do not drop or otherwise expose the remote control to physical impact.

•

Do not get the remote control wet or place it on wet objects. Doing so may result in malfunction.

• Do not place the remote control near the projector’s lens, fan, or vents.

• Remove the batteries from the remote control and store them in a safe place if you won't be using the remote control for an extended period.

• Replace the batteries whenever the remote control starts to malfunction.

•

When strong light, such as direct sunlight or light from an extremely close range (such as from an inverter fluorescent lamp), hits the projector's remote sensor, the remote control may cease to function. Adjust the direction of the projector to keep light from directly hitting the projector's remote sensor.

ATTENTION

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.

CAUTION

• Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous radiation exposure.

* Using the lever switch

Flip toward disk pad : Up ( ) key

Flip toward MENU button

: Down ( ) key

Press in center : ENTER button

VIDEO

STANDBY/ON

CP-X880/CP-X885

LASER INDICATOR

RGB

FOCUS

BLANK

ASPECT

PUSH

ENTER

ESC MENU RESET

POSITION

MAGNIFY VOLUME

OFF

WIRELESS KEYSTONE

ZOOM

AUTO

FREEZE

PAGE

DOWN

PinP

MUTE

ONE TOUCH

LASER

Battery box

LASER switch

1: Enable 2: Disable

CP-X880/CP-X885

4. Adjustment

4-1 Before adjusting

4-1-1 Adjustment menu

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].)

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).

4-1-2 Required adjustment

Relation between the replacement part and

required adjustment are shown in Table 4-1-2.

4-2 Ghost adjustment

Signals for internal adjustment

30%

0/255

112/255

Tabel 4-1-2: Required adjustment

Replaced part

Required

adjustment

Ghost

(Chap.4-2)

Flicker

(Chap.4-3)

NRSH

(Chap.4-4)

White balance

(Chap.4-5)

Color uniformity

(Chap.4-6)

Dichroic

optics unit

LCD/LENS

prism

assembly

PWB

assembly

drive

Lamp

unit

: need : recommend : no need

Adjustment procedure

Use DAC-P - GHOST - R: in the Adjustment menu

to adjust so that R color ghost is at a minimum.

(Press the [RESET] button, 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.

CP-X880/CP-X885

4-3 Flicker adjustment

(V.COM adjustment)

Signals for internal adjustment

4-4

NRSH adjustment

(vertical stripe adjustment)

Signals for internal adjustment

144

120

/255

168

/255

192

/255

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.

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.

CP-X880/CP-X885

4-5

White balance adjustment

Preparations

1. Perform these adjustments after the NRSH

adjustment described in Section 4-4.

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.

(visual inspection)

2. Reset gamma correction before adjustment.

Place the cursor on [GAMMA] in the Adjustment

menu, press the [RESET] key and select

[DEFAULT].

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.

Adjustment operations (reference)

SUB-CONTRAST operation

Brightness

014 29 43 869375 100

Input signal (%)

SUB-BRIGHT operation

Brightness

014 29 43 869375 100

Input signal (%)

CP-X880/CP-X885

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. 7% input signal)

MID-L tone (approx. 18% input signal)

MID-H 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, 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

VID-AD

C. UNIF.

DAC-P

GAMMA

Adjust Tone menu

No. 1 R 0

OFF

Major adjustment lattice point No.

LEVEL BLACK

MIN

MID-L

MID-H

MAXSTRIPE

G 0 B 0

Major adjustment lattice point position

14 12

6 4 8

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

10 11

15 17

2 1 3

7 5 9

V/6

V/3

V/6

CP-X880/CP-X885

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 (Target)

x = x1 ± 0.020 , y = y1 ± 0.050

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 three 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.

Now measure the color coordinates of measurement

13.

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.

Don't adjust [MAX] tone [G].

Adjust [MAX] tone [R], [B] only.

CP-X880/CP-X885

Adjustment procedure 2

(visual inspection)

1. First adjust [MIN] tone [G:].

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

If the background is [G] monochrome, press the

[ENTER] key on the Remote control transmitter

to change to solid white.

3. View measurement point [No.2] and [No.3].

Lower the [G] color intensity only of the color

point whose [G] color is more intense than

measurement point [No.1].

4. View measurement point [No.10] and [No.11].

Lower the [G] color intensity only of the color

point whose [G] color is more intense than

measurement point [No.1], and raise the

intensity of the point whose color intensity is

lower than measurement point [No.1].

5. Now adjust the [MIN] tone for colors [R] and [B].

6. View measurement points [No.2], [No.3],

[No.10] and [No.11]. Adjust the [R] and [B] of

each measurement point so that they have the

same color as measurement point [No.1].

Adjustment technique:

First, adjust [B:] of the point whose color is to be

adjusted so that it approximates that of [No.1]. If

[R:] is low at this time, the image will have cyan

cast, in which case [R:] is increased. On the other

hand, if [R:] is excessive, the image will have a

magenta cast, in which case [R:] is decreased.

Overall, a cyan cast makes it easy to see color shading.

7. Next, view measurement points [No.4], [No.5],

[No.12], [No.13] and make similar adjustments.

8. Then adjust measurement points [No.6], [No.7],

[No.8], [No.9], [No.14], [No.15], [No.16] and [No.17].

This completes the [MIN] tone adjustments.

9. Make similar another three tones as described

in steps 1 to 8 above.

No. 2 deviation range No. 10 deviation range No. 3 deviation range No. 11 deviation range

15 13

14 12

15 13

14 12

15 13

No. 4 deviation range No. 12 deviation range No. 5 deviation range No. 13 deviation range

3 112

14 12

15 13

113 11210 1

15 13

1614 12

86 4 84

10 1

15 13

1614 12

10 1

No. 6 deviation range No. 7 deviation range No. 8 deviation range No. 9 deviation range

15 13

1614 12

86 4 84

3 11210 1

10 12

1614 12

1315

418

3 112

14 12

1 3 11

1713

No. 14 deviation range No. 15 deviation range No. 16 deviation range No. 17 deviation range

15 13

1614 12

84 84

3 112 1

10 12

1614 12

14 12

1 3511

5. Troubleshooting

Check points at trouble shooting

EE51(Parts side)

CPC30 low connector

ESPL E806

E803

E802

E801

AP98(Parts side) AP99(Parts side)

EG03

(Parts side)

P501 P701

TPX26

TPX29

EW01 (Parts side)

P601

TP98 TP99

TPX23

E101 (Parts side)

TPX19

TPX20

CP-X880/CP-X885

E808 E807

PWB assembly Drive

S315(IN)

CHV34

CHV28

CHV29

I104

E812

S314(OUT)

(Parts side)

CHV26

CHV35

CHV36

CHV27

EV01 (Parts side)

CHV22 CHV23

ESPR

CHV33

I256

11 20

10 1

E804

Q801 C

E811

E800

E805

E809

E302

TH950

PWB assembly Signal

ES02

EL4332CS (IS01)

PWB assembly Senso

Power can not be turned on

CP-X880/CP-X885

Are voltage

input on the PWB

assembly Drive at

standby mode?

YES

What is the state of

LAMP indicator

D302?

Not light

PWB assembly Drive

: +16.5V

E800

: +15V

E800

: +4V

E800

: +6V

E800

Blinks

Lights

Lamp

Power unit (ballast)

Disconnect

TSW from Power unit

(circuit). And check

TSW short or

open?

Short

Power unit (circuit)

Is the LAMP COVER

set?

Is the LAMP connection?

Open

on Power unit (circuit)

TSW

Fuse

Set the LAMP COVER

Set the LAMP again

Is the

voltage at pin and

of E807 same?

PWB assembly Limit SW

1 2

YES

PWB assembly Drive

CP-X880/CP-X885

Lamp does not light

DC fan malfunction

Measure the voltage

at each pin

Set AC to ON and

enter standby status

The voltage is

H (3.3V)

Turn on the

power supply and check

the voltage

H (3.3V)

The voltage

(about 1 sec.)

What is the state of

LAMP indicator D302

during operation?

Connect E302

(for PWB

assembly Sensor)

DC FAN

INTAKE B : E801 INTAKE G : E802 INTAKE R : E803 EXHAUST : E804 EXHAUST(POWER) : E809 LAMP : E808

PWB assembly

Sensor

once

to L (0V)

Normal

Not light

H (3.3V)

1 1 1 1

Infinity

Light Light

Change the lamp.

Does lamp light?

Not light

Is the

voltage at collector

of Q801 on the PWB assembly

Drive fixed to "L" during

warming-up?

"L" = 0V

Power unit (ballast)

Blinks

What is the state of

TEMP indicator

D301?

Is E302

(PWB assembly Sensor)

Not light

surely connected with PWB assembly Drive

by the cable?

YES

Is the voltage

at pin of E805 on

the PWB assembly Drive

set to "L" during

warming-up?

Measure

sure voltage at

the of I256 on the

YES

PWB assembly

Drive.

L (0V)

Power unit (ballast)

Measure

the resistance of TH950 on the PWB assembly Sensor at

disconnecting

E302.

about 4.7k

PWB assembly Drive

YES

PWB assembly Drive

Power unit (circuit)

"L" = 0V

PWB assembly Drive

Lamp

FAN

Check the fan connector

connection

Connector connection

about 1 sec.

AC ON Power ON

Picture is not displayed when the RGB signal is input

Check at operating mode

CP-X880/CP-X885

Are signal

input at each pin on the

PWB assembly

Drive?

TPX29 : R signal

YES

TPX26 : G signal TPX23 : B signal TPX20 : H sync TPX19 : V sync

Are voltage input

at each pin on the PWB

assembly Drive?

: +16.5V

E800

: +15V

E800

YES

PWB assembly Drive

E800 E800

4 6

: +4V : +6V

LCD panel

Picture is not displayed when the VIDEO, S-VIDEO, Component Signal is input

Change the

IS01 on the PWB

assembly Signal is it

repaired?

PWB assembly Signal

Power unit

(circuit)

YES

IC (IS01) EL4332CS

Check at operating mode

Are voltage

input at each pin on

the PWB assembly

Drive?

YES

Are signal

input at these

pins of EV01 on the

PWB assembly

Drive?

YES

CHV29 : VIDEO (Composite) CHV28 : S-VIDEO (Y) CHV27 : S-VIDEO (C) CHV34 : Component (Y) CHV35 : Component (Cb) CHV36 : Component (Cr)

E800 E800 E800 E800

: +16.5V

: +15V

: +4V

: +6V

Power unit (circuit)

Measure

the voltage at pin

of I104 on the PWB

assembly

Drive.

PWB assembly Signal

PWB assembly Drive

PWB assembly Drive LCD module assembly

No sound

Check at operating mode

CP-X880/CP-X885

Are signal input

at each pin on the PWB

assembly Drive?

YES

CHV26 : Audio (L) CHV33 : Audio (R)

PWB assembly Drive Speaker

Can not control to RS-232C

Are the

signals input at each

pin of EV01 on the PWB

assembly

Drive?

Check at operating mode

CHV22: RX

YES

CHV23: TX

PWB assembly Signal

Pin No RS-232C

SEL0

RTS

GND

RDP

TDP

PWB assembly Drive

PWB assembly Signal

CP-X880/CP-X885

6. Service points

Lead free solder [CAUTION]

This product uses lead free solder (unleaded) to help preserve the environment. Please read these

instructions before attempting any soldering work.

Caution: Always wear safety glasses to prevent fumes or molten solder from getting into the eyes. Lead

free solder can splatter at high temperatures (600˚C).

Lead free solder indicator

Printed circuit boards using lead free solder are engraved with an "F."

Properties of lead free solder

The melting point of lead free solder is 40-50˚C higher than leaded solder.

Servicing solder

Solder with an alloy composition of Sn-3.0Ag-0.5Cu or Sn-0.7Cu is recommended.

Although servicing with leaded solder is possible, there are a few precautions that have to be taken. (Not

taking these precautions may cause the solder to not harden properly, and lead to consequent malfunctions.)

Precautions when using leaded solder

Remove all lead free solder from soldered joints when replacing components.

If leaded solder should be added to existing lead free joints, mix in the leaded solder thoroughly after the

lead free solder has been completely melted (do not apply the soldering iron without solder).

Servicing soldering iron

A soldering iron with a temperature setting capability (temperature control function) is recommended.

The melting point of lead free solder is higher than leaded solder. Use a soldering iron that maintains a high

stable temperature (large heat capacity), and that allows temperature adjustment according to the part being

serviced, to avoid poor servicing performance.

Recommended soldering iron:

Soldering iron with temperature control function (temperature range: 320-450˚C)

Recommended temperature range per part:

Part Soldering iron temperature

Mounting (chips) on mounted PCB 320˚C±30˚C

Mounting (chips) on empty PCB 380˚C±30˚C

Chassis, metallic shield, etc. 420˚C±30˚C

The PWB assembly which has used lead free solder

PWB assembly DRIVE

PWB assembly SIGNAL

PWB assembly REMOTE CONTROL

PWB assembly LIMIT SWITCH

PWB assembly SENSOR

CP-X880/CP-X885

When cleaning the optical system with the PWB assembly Drive connected

More efficient operation is possible if the optional JOINT PWB (JP056511) is used because the cable can

then be extended.

E803

E802

E801

CNLC

Motor lead

E808 E807

PWB assembly Drive

E804

E811

E800

E805

E809

E302

A83

CNRM

#6606

#6607

#6606

#680

A84

#3055

CNPW2

CNPW1

CNBAR

#3054

CNTH

PWB assembly Drive connector name PWB assembly Drive connection cable name

Drive board

Operational Method

No.

PWB assembly Drive

connection cable name

CNPW1 12P PH (JA04721-G) E72 E800 Power supply secondary

CNPW2 3P PH (JA04721-B) E22 E811 Power supply secondary

CNBAR 4P PH (JA04721-C) E32 E805 Ballast power supply control

#3054 3P PH (JA04721-B) E22 E809 Power supply air intake fan

CNTH 2P DF13 (JA04721-D) E42 E302

#3055 3P ZH (JA04721-E) E52 E804 Exhaust fan

CNLC 2P DF13 (JA04721-D) E42 E807 Lamp door switch

#680 4P ZH (JA04721-F) E62 E808 Lamp fan

#6606 3P ZH (JA04721-E) E52 E803 Red (R) panel fan

#6606 3P ZH (JA04721-E) E52 E801 Blue (B) panel fan

JOINT PWB type

and connector

PWB assembly Drive

connector name

Signal content

Air intake temperature sensor

#6607 4P ZH (JA04721-F) E62 E802 Green (G) panel fan

Cautions

There is no front remote control PWB extension; therefore, the remote control cannot be used during

operation unless Remote Control Photoreceptor only rear is selected from the Menu beforehand.

The lamp door switch is turned off when the upper case is removed; therefore, it is necessary to turn on the

lamp door switch by using a thin object to continuously press where indicated by "A" in the illustration.

Remove the optical unit before removing the power supply PWB block.

The fan cooling sirocco fan is easily damaged; therefore, use care to avoid applying any impact after removing the optical unit.

CP-X880/CP-X885

Fan protuberance

When removing the optical unit, move

it in the direction of the arrow so that the protuberance of the optical unit fan does not become caught in the indentation in the bottom case.

Use care to avoid applying any stress

to the optical unit.

Bottom case indentation

CP-X880/CP-X885

Remove the battery cover

Slide back and remove the battery cover in the direction of the arrow.

Insert the batteries

Align and insert the two AA batteries (that came with the projector) according to their plus and minus terminals (as indicated in the remote control).

Close the battery cover

Replace the battery cover in the direction of the arrow and snap it back into place.

CAUTION

Precautions to observe in regards to the batteries

Always handle the batteries with care and use them only as directed. Improper use may result in

battery cracking or leakage, which could result in fire, injury and/or pollution of the surrounding environment.

• Keep the battery away from children and pets.

•

Be sure to use only the batteries specified for use with the remote control. Do not mix new batteries with used ones.

•

When inserting batteries, verify that the plus and minus terminals are aligned correctly (as indicated in the remote control).

• When you dispose the battery, you should obey the law in the relative area or country.

Before Replacing the LCD / Lens Prism

You should not replace separately the parts of the liquid crystal LCD / Lens Prism because it works properly

only when used together. Therefore, regarding these parts, you can either replace part, LCD / Lens Prism

assembly, or send the whole unit LCD / Lens Prism assembly back to HITACHI, where we will replace the

malfunctioning part, recondition the device and send it back to you. In that case please contact our distributor.

DISTRIBUTOR HITACHI

Do not disassemble the unit because replacement of separate parts is not possible.

Replacement of G Panel Reconditioning

Return

G Panel

Putting batteries into the remote control unit

Lamp (Option Lamp:DT00531)

HIGH VOLTAGE HIGH TEMPERATURE HIGH PRESSURE

To replace the lamp, check the model number of the replacement lamp (sold separately)

. Replacement lamp model number: DT00531 Before replacing the lamp, make sure the power switch is off and the power cable is not plugged in, then wait at least 45 minutes for the lamp to cool sufficiently. Handling the lamp while hot can cause burns, as well as damaging the lamp.

The LCD projector uses a glass lamp bulb. It is a mercury lamp with high

internal pressure. High-pressure mercury lamps can break with a loud bang, or burn out, if jolted or scratched, or through wear over time. Each lamp has a different lifetime, and some may burst or burn out soon after you start using them. In addition, when the bulb bursts, it is possible for shards of glass to fly into the lamp housing, and for gas containing mercury to escape from the projector’s vent holes.

•

Do not open the lamp cover while the projector is suspended from above. This is dangerous, since if the lamp’s bulb has broken, the shards will fall out when the cover is

•

Handle with care: jolting or scratching could cause the lamp bulb to burst during use.

lamp for long periods of time, or past the replacement date, could cause it to burst. Do not use old (used) lamps; this is a cause of breakage.

•

If the lamp breaks soon after the first time it is used, it is possible that there are electrical problems

•

If the lamp should break (it will make a loud bang when it does), ventilate the room well, and make sure not to breathe the gas that comes out of the projector vents, or get it in your eyes or mouth.

•

Obey local ordinances when disposing of used lamps. In most cases, it is possible to dispose of used bulbs in the same manner as used glass bottles, but in some cases, bulbs are sorted separately.

• Do not use the projector with the lamp cover removed.

WARNING

opened.

CP-X880/CP-X885

•

If the replace lamp indicator (see "Related Messages" and "Regarding the indicator Lamps") comes on, replace the lamp as soon as possible. Using the

elsewhere besides the lamp.

CP-X880/CP-X885

• The LAMP indicator is also red when the lamp unit reaches high temperature.

Before replacing the lamp, switch power off, wait approximately 20 minutes, and switch power on

again. If the LAMP indicator is still red, replace the lamp.

NOTE

All projector lamps will wear out eventually. If used for long periods of time, the image could become darkened, and the color contrast could be impacted as well. We recommend that you replace your lamps early. If the LAMP indicator turns red, or a message prompts you to replace the lamp when you power up the projector, the lamp needs to be replaced. (See "Related Messages" and "Regarding the

Turn off the projector, and unplug the power cord. Allow the lamp bulb to cool for at least 45 minutes, and prepare a new lamp (serial number: DT00531)

Insert the new lamp, and tighten the 3 screws firmly to lock it in place

Interlocking the 2 tabs of the lamp cover to the projector, put the lamp cover on the projector. Then push the point of the lamp cover to fix it, as shown in the figure. Make sure that the lamp cover does’t come up

After making sure that the projector has cooled adequately, slide the knob of a lamp cover lock as shown in the figure. Then, one side of the lamp cover is raised. Pull up the lamp cover and remove it, as shown in the figure

Unscrew the 3 screws, and slowly pull out the lamp by the handle

•

Be careful not to touch the inside of the lamp case.

ATTENTION •

Make sure that the screws are screwed in firmly. Loose screws could result in damage or injury.

• Do not use with lamp cover removed.

•

Do not reset the lamp timer without replacing the lamp. Reset the lamp timer always when replacing the lamp. The message functions will not operate properly if the lamp timer is not reset correctly.

• When the lamp has been replaced after the message of “CHANGE THE LAMP .....THE POWER

WILL TURN OFF AFTER 0 hr.” is displayed, or the LAMP indicator is red, complete the following operation within 10 minutes of switching power on.

Turn on the projector power, and reset the lamp timer

• To reset the lamp timer, from the OPTION menu, select the LAMP TIME.

Knob of Lamp Cover Lock

Tabs

Push

Replacing the Lamp

Indicator Lamps" for details.)

P M LA

P M

LA O C

P M LA

+ 47 hidden pages

Hitachi cpx880, cpx885 Service Manual

Contents

1. Features

2. Specifications

3. Names of each part

4. Adjustment

5. Troubleshooting

6. Service points