Hitachi pjtx10 Service Manual

No.0536E

PJ-TX10

SERVICE MANUAL

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.

(C10H)

Caution

Be sure to read this manual before servicing. To assure safety from ﬁ re, electric shock, injury, harmful radi-

ation 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.

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 LENS/PRISM assembly, do

not hold the FPC of the LCD module assembly.

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

Contents

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 ----------------------------------------- 29

8. Disassembly diagram--------------------------------- 34

9. Replacement parts list-------------------------------- 37

10.RS-232C communication ---------------------------- 38

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

August 2003 Digital Media Division

PJ-TX10 (C10H)

1. Features

Easy and flexible keystone adjustment

My memory

Optical lens shift

Wide angle lens

Low noise

2. Specifications

Model name PJ-TX10

Liquid

Crystal

Panel

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

RGB input /

output

Drive system TFT active matrix

Panel size 1.4cm (0.55 type)

Number of pixels 854 (H) × 480 (V)

Lamp 130W UHB

Level Composite 1.0±0.1Vp-p(75Ωtermination)

S-Video Y : 1.0±0.1Vp-p(75Ωtermination)

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

0.3±0.1Vp-p

Component Y : 1.0±0.1Vp-p(75Ωtermination)

Analog RGB 0.7V p-p (75Ωtermination)

Sync. TTL level

Audio Input 200mVrms,50kΩ (max. 3.0Vp-p)

Speaker output 1.0W(mono)

Power supply AC100~120V / 2.4A , AC220~240V / 1.1A

Power consumption 220W

Dimensions 350(W) × 121(H) × 285(D) mm (No including protruding parts)

Weight 3.6kg (7.9lbs)

Temperature Operation : 0~35°C Storage : -20~60°C

Accessories Power cord

PJ-TX10W x 3 PJ-TX10E x 2 (UK, Europe) Video/Audio cable x 1

SCART adapter PJ-TX10E only x 1

Rivet (for Lens cap) x 1 Strap (for Lens cap) x 1

B/PB

R/PR

(US, UK, Europe)

(PAL/SECAM burst signal,75Ωtermination)

: 0.7±0.1Vp-p(75Ωtermination)

Remote control x 1 Battery (for Remote control) x 2 User’s manual

Quick guide x 1 Safety guide x 1 Operating guide book x 2 or 3

3. Names of each part

PJ-TX10 (C10H)

Parts names

Zoom ring

Focus ring

Lens

(The picture is

projected from

here.)

Fastening The Lens Cap

1. Fix the strap to the strap ring of lens cap, as the right drawing.

Pull

INPUT button

toggles between the signal ports.

COMPUTER VIDEO

COMPONENT VIDEO

STANDBY/ON button

prepares for turning the power on/off. Refer to the section "Power ON/OFF".

Lens cap

Lens cap Strap ring Strap

S-VIDEO

Projector (Front/Right)

To avoid losing, please fasten the lens cap to the projector using the strap.

2. Put one piece of the strap into the groove on rivet, as the right drawing.

Strap Rivet

Elevator feet

3. Push the rivet into the

POWER indicator

tells the state of power supply. Refer to the section "Power ON/OFF".

TEMP

LAMP

STANDBY/ON

POWER

INPUT

Air filter cover

(An air filter is inside.)

Picture shift dial

(horizontal)

Picture shift dial

(vertical)

Remote sensor

Elevator button

strap hole.

Strap hole

Push in

(Bottom side)

Rivet

TEMP indicator

lights or blinks when any problem about internal temperature has happened.

LAMP indicator

lights or blinks when any problem about the lamp has happened.

AUDIO R port

L port

(from a video equipment)

AUDIO port

(from a computer)

S-VIDEO port

VIDEO port

Ports cover

COMPONENT VIDEO - Y

COMPONENT VIDEO - CB/PB

COMPONENT VIDEO - CR/PR

AC inlet

Projector (Rear/Left)

MENU buttons

operate the menu function.

CONTROL port

COMPUTER port

Power switch

PJ-TX10 (C10H)

S-VIDEO button

selects the input signal of S-VIDEO port.

SEARCH button

searches for an input signal between the following signal ports of COMPUTER, VIDEO, S-VIDEO and COMPONENT VIDEO.

VIDEO button

selects the input signal of VIDEO port.

COMPUTER button

selects the input signal of COMPUTER port.

WIDE button

toggles between the modes for aspect ratio.

AUTO button

executes automatic adjustment.

CINEMA, DYNAMIC, NORMAL, CUSTOM buttons

select each of gamma mode.

SRC

VIDEO

VSVC

COMPUTER

CINEMA

CIN

KEYSTONE

ESC RESET

OFF

COMPONENTS-VIDEO

WIDEAUTO

BLANK

WID

DYN AM IC

NORMAL

DYN

NOR CUS

MYMEMORY

M2 M3 M4

ENTER

ENT

VOLUM E

CUSTOM

MUTE

OFF button

prepares for turning the power off.

ON button

prepares for turning the power on.

COMPONENT button

selects the input signal of COMPONENT port.

VOLUME button

turns on/off the VOLUME mode. In the VOLUME mode,

To adjust the volume,

use the cursor

buttons.

BLANK button

blanks the screen temporarily.

MUTE button

mutes/restores the sound.

M1, M2, M3, M4 buttons

call the setting data on each memory.

KEYSTONE button

turns on/off the KEYSTONE mode. In the KEYSTONE mode,

To adjust the keystone,

use the cursor

buttons.

ESC button

returns to the previous display at the menu functions.

ENTER button

proceeds to the next operation at the menu functions.

,,,

(Cursor) buttons

works for adjusting or menu controlling.

Remote control transmitter

MENU button

opens/closes the menu.

RESET button

cancels the adjustment in progress. * The adjustments of the volume etc. are not reset.

4. Adjustment

PJ-TX10 (C10H)

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.

Fig.4-1 Shifting the lens position

4-1-2 Setting of condition before adjustment

1. Before starting adjustment, warm up the projector

for about 10 minutes.(Blank white)

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

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

3. Set the lens position to the default with horizontal

and vertical lens shift dial. As shown in Fig.4-1,

adjust the dials to match the dial’s center mark to

printed center mark on case.

4. Normalizing the video adjustment.

(Press the [MENU] button of the Remote control

transmitter. Place the cursor on the RESET item

in the Main menu and press the [

RESET menu appears, press the [ ] key to EXE-

CUTE the normalization. Next choose the RESET

item in the PICTURE1 menu and perform EXE-

CUTE by the same operation described above.)

] key. After the

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

Replaced

part

Dichroic

optics unit

LCD/LENS

prism

assembly

PWB

assembly

Main

Lamp

unit

assembly

PWB

assembly

Sensor

Ghost

(Chap.4-2)

Flicker

(Chap.4-3)

: means need for adjustment.

: means recommended.

Adjustment

NRSH

(Chap.4-4)

White

balance

(Chap.4-5)

: means not need for djustment.

Color

uniformity

(Chap.4-6)

AIR

SENSOR

(Chap.4-7)

*note :The MAIN and PICTURE1 menu is not

reset with no signal.

Set the WHISPER in the MAIN menu to the NORMAL.

6. Set the NORMAL at GAMMA in the PICTURE1

menu.

Perform all adjustments from the FACTORY MENU.

Perform the following operations to display the

FACTORY MENU.

Press the [MENU] button on the Remote control

transmitter (the MAIN menu will appear).

b. Select the [RESET] in the MAIN menu, and

then press the [ ] button.

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

hold the [RESET] button for 3 seconds or

more (the

FACTORY MENU

will appear).

4-2 Ghost adjustment

Signals for internal adjustment

30%

0/255

112/255

Adjustment 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 4 steps.)

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

FACTORY MENU to adjust so that G color ghost

is at a minimum.

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

FACTORY MENU to adjust so that B color ghost

is at a minimum.

PJ-TX10 (C10H)

4-3 Flicker adjustment

(V.COM adjustment)

Signals for internal adjustment

4-4

NRSH adjustment (vertical stripe adjustment)

Signals for internal adjustment

/255

4-5

White balance adjustment

/255

(visual inspection)

192

168

144

120

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-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 28-tone grayscale.

Adjust GAMMA, SUB-CNT, and G: in the FACTORY MENU so that brightness of 28 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.

Adjustment procedure

1. Make this adjustment after completing the adjustment in 4-2 Ghost adjustment.

2. 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.

Adjustment procedure

1. Make this adjustment after completing the adjustment in 4-3 Flicker adjustment.

2. Use DAC-P - NRSH - R: in the FACTORY MENU to adjust so that the vertical lines spaced every 6 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.)

In the same way, use DAC-P - NRSH - G: in the FACTORY MENU

In the same way, use DAC-P - NRSH - B: in the

to adjust vertical stripes of G color.

Adjustment menu to adjust vertical stripes of B color.

2. Reset gamma correction before adjustment.

Place the cursor on [GAMMA] in the FACTORY MENU, press the [RESET] key and select [DEFAULT].

Select GAMMA, SUB-CNT, and G: in the FACTORY

6. 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-BRT, R: and B: in the FACTORY MENU so that low-brigtness 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 28 steps is best.

PJ-TX10 (C10H)

4-6 Color uniformity adjustment

Preparations

1. Perform these adjustments after the white bal-

ance adjustment described in Section 4-5.

2. Make a color uniformity adjustment for the follow-

ing four tones.

MIN tone (approx. 6% input signal)

MID-L tone (approx. 13% input signal)

MID-H tone (approx. 25% input signal)

MAX tone (approx. 56% input signal)

3. Place the cursor on [C.UNIF.] in the FACTORY

MENU and press the [ ] key. This displays the

Adjust Tone menu at 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

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 [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 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 FACTORY

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.

FACTORY MENU

VID-AD

C. UNIF.

DAC-P GAMMA STRIPE

Adjust tone menu

C.UNIF

ON/OFF ON

MIN

MID-L

MID-H

MAX

OFF

No. 1 R 0

Major adjustment lattice point No.

G0 B0

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

PJ-TX10 (C10H)

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 aver-

age 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 transmit-

ter 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 differ-

ence meter is used, the [

convenient. When adjustment point [No.1]

color coordinate has been selected, set the

slide switch on the side to [

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

](delta) mode is

](delta) while

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 two 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.

13. Now measure the color coordinates of measure-

ment 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.

(Adjust [MAX] tone [G] so that the adjustment

data set half as many as [MID-L] tone [G].)

PJ-TX10 (C10H)

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 mea-

surement 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 mea-

surement point [No.1], and raise the intensity of

the point whose color intensity is lower than mea-

surement 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 mea-

surement 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.

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

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

PJ-TX10 (C10H)

4-7 AIR-SENSOR adjustment

When the PWB assembly MAIN or the PWB assembly SENSOR is replaced, perform this adjustment after com-

pleting reassembling the projector.

1. Open SERVICE MENU and choose AIR-SENSOR by using

Service menu comes up by following operation.

By the control panel By the remote control transmitter

1. Display the menu by the “MENU”

button.

2. Select the “OPTION” on the menu.

3. Continue press the button “

then press the button “ ” together

with “INPUT”, and hold for 3 seconds.

” ﬁ rst,

1. Display the menu by the “MENU”

button.

2. Select the “OPTION” on the menu.

3. Press the “ON” button.

Next hold the “ON” button for 3

seconds.

button.

2. Press the

cally.

3. After the massage of "END" is displayed, check the Offset value displayed according to the following spec

Spec. : 150 Offset: 227

4. If out of spec, confirm the below conditions Then retry the same adjustment.

(a) Installing the air filter correctly.

(b)

(d) Installing the PWB assembly SENSOR correctly.

(e) Connecting the proper wires to E7A1 and E981 firmly.

(f) The component I7A2 on the PWB assembly MAIN stands vertically

(g) The component D981 on the PWB assembly SENSOR stands vertically

5. If the all conditions above is okay, replace the PWB assembly Main.

button. Next press the [ ] button to select EXECUTE. The adjustment program runs automati-

Description

No obstruction and dust on air filter. (If not good condition, clean or replace the air filter.)

5. Troubleshooting

Check points

PWB assembly REMC

E805

P701

E302

PJ-TX10 (C10H)

#6800

P501

E802

E801 E804

D841

E800

P601

PWB assembly MAIN

EV01

E102

E301

#6430

E7A1

ESPL

EA01

PWB assembly SENSOR

(POWER)

S301

(P-ON)

D302

(TEMP)

D301

S302

(INP)

ES01

D303

(LAMP)

TSW

Power can not be turned on

Are

voltage input

at pins , , , of

5 7

E800 on the PWB assembly

Main at standby

mode?

YES

:0V

: +17V

:+6.6V

:+4.1V

PJ-TX10 (C10H)

Is the Lamp door installed

correctly?

YES

Disconnect

TSW form Power unit

(circuit). And check

TSWshortor

open?

Short

Open

Reset the Lamp door

TSW

What is the state of

TEMP indicator D302?

Not light

PWB assembly Main

Blinks

Power unit (circuit)Lamp door SW

Jump to * on the page 13

Fuse

on the Filter unit

Filter unit

Lamp does not light

PJ-TX10 (C10H)

What is the

state of LAMP

indicator D303 during

operation?

Not light

Light NG

Is the LAMP

installation correct?

YES

Change the lamp.

Does lamp light?

Not light

Is the

voltage at the

of E804 on the PWB

assembly Main fixed to "L"

during warming-up?

Power unit (ballast)

Light

YES

"L"=0V

Power unit (circuit)

Install the Lamp

Lamp

PWB assembly Main

DC FAN

(Lamp)

DC FAN

(Panel)

H (3.3V)

(Fan lock)

Blinks

Measure

sure voltage at the

cathode pin of D841 on

the PWB assembly

of E801 have a amplitude

of 3.3V and a frequency

PWB assembly Main

Main.

L(OV)

Does the

signal at the pin

of 40Hz or

more?

YES

(Normal)

What is the

state of TEMP indicator

D302?

Not light

Is the voltage

at the of E804 on

the PWB assembly Main

set to "L" during

warming-up?

YES

Power unit (ballast)

"L" = 0V

PWB assembly Main

PJ-TX10 (C10H)

Power unit (circuit)

YES

Are

voltage input at

pins , , , of

E800 on the PWB

assembly

Main?

:+12V :+17V : +6.6V : +4.1V

PWB assembly Main

LCD module assembly

Check at operating mode

1 3 5

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

1 3 5

Picture is not displayed only

when the RGB signal is input

Check at operating mode

Are

voltage input

at pins , , , of

1 3 5 7

E800 on the PWB

assembly

Main?

YES

1 3 5 7

: +12V : +17V :+6.6V :+4.1V

Power unit

(circuit)

PWB assembly Main

LCD panel

PJ-TX10 (C10H)

Speaker

Check at operating mode

No sound

YES

Power unit (circuit)

Are

voltage input

at pin , , ,

of the E800 on the PWB

assembly

main?

71 3 5

PWB assembly Main

Turn off

the projector and

disconnect the Speaker

cable from ESPL.

Measure the resistance

of the Speaker.

: +12V : +17V : +6.6V : +4.1V

1 3 5

about 8

0 or infinity

Can not control to RS-232C

Check the

RS-232C cable.

Are pin No. 2 and 3

crossed?

YES

Check the

power supply voltage

of E800 the voltage

correct?

YES

: +12V

: +17V

: +6.6V

: +4.1V

PWB assembly Main

Use cross cable

Power unit (circuit)

The check after parts change

1. PC power supply OFF

2. Connection of cable

3. Projector starting

4. PC starting *When not operating :

PC set up change of cable.

PJ-TX10 (C10H)

6. Service points

6-1 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 MAIN

PWB assembly SENSOR

PWB assembly REMC

POWER UNIT (BALLAST)

POWER UNIT (CIRCUIT)

FILTER UNIT

PJ-TX10 (C10H)

6-2 Cautions when removing the PWB assembly MAIN

When removing the PWB assembly MAIN, there is danger of damaging the connector connecting cables.

1) Disconnect 10 cables and remove 4 screws.

4 screws

PWB assembly MAIN

2) Remove 2 screw.

2 screw

3) Lift up the rearward of the PWB assembly MAIN to the front.

FRONT

PWB assembly Main

REAR

Lift up

Disconnect the 2 cables.

6-3 Cautions When Removing The Power Unit (BALLAST)

When removing the cable (CNBAR) connected to Power Unit (BALLAST), there is danger of damaging the small

PWB connecting cables.

CNBAR

Disconnect the CNBAR from connector CN200, while pressing the sub-board (to prevent the stress on the sub-board).

CN200

T102

CN100

Power Unit (BALLAST)

PJ-TX10 (C10H)

6-4 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.

G Panel

DISTRIBUTOR HITACHI

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

Replacement of G Panel Reconditioning

Return

6-5 Cleaning up dust from panels and optical filters

1. Preparation

Please prepare cleaning tools and materials as follows. And prepare relatively clean room not to work in addi-

tional dust, while removing operation.

(1) Swab for cleaning •••••• P#: NX08061, "Cotton stick L147"

(2) Air duster (Dust blower, spray can)

(3) Vacuum cleaner

2. Disassemble and open the maintenance hole.

(1) Turn off the projector, and unplug the power cord.

(2) Remove the top cover, according to the disassembling diagram of chapter 8.

(3) Remove the PWB assembly MAIN, according to the Chapter6-2.

(4) Remove the intake LID.

Release two latches

Lift up

ᴾ

(5) Re-assemble the PWB assembly MAIN, and re-connect all the connectors.

Intake LID

3. Maintenance point

PJ-TX10 (C10H)

Swab

Holder

Each color part has same con-

struction.

Optical filters

Panel

By using swab and air duster,

you can easily remove dust from

panel and optical filters.

Separatied formationActua l formation

ᴾ

4. Cleaning the panels and optical filters

(1) Turn on the set and lit on the lamp.

(2) Set blank screen to black or white.

(3) By using swab and air duster, remove the dust. While cleaning, you can check the dust on screen.

Swab

• While removing the dust, separated dust will be

blown off by air cooling system.

Panel

• Please pay attention not to damage panel and fil-

ters.

Holder

Air

Optical filters

5. Re-assembly

(1) Turn off the set and remove the PWB assembly MAIN.

(2) Set the intake LID.

(3) Re-assemble the PWB assembly MAIN.

(4) Re-assemble the set.

(5) While re-assembling, please clean the intake LID and intake filter and filter cover by using vacuum cleaner.

6-6 The Remote Control

PJ-TX10 (C10H)

CAUTION

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 speciﬁ ed 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.

Putting Batteries

1. Remove the battery cover.

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

2. Insert the batteries.

Align and insert the two AA batteries according to their plus and minus terminals.

(as indicated in the remote control.)

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

3. Close the battery cover.

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

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