Hitachi SM0541 User manual

Brand: Hitachi

Model: SM0541

Category: Data projectors

Type: User manual

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

Multimedia LCD Projector

March 2004 Digital Media Division

SM0541

CP-S235W(C10SM2)

SERVICE MANUAL

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.

Caution

1. When replacing the lamp, avoid burns to your ﬁ ngers. The lamp becomes very hot.

2. Never touch the lamp bulb with a ﬁ nger or anything else. Never drop it or give it a shock. This 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 the projector is turned on.

4. Do not touch the exhaust fan during operation.

5. The LCD module assembly is easily damaged. When replacing the LCD LENS/PRISM assembly, do

not hold the FPC of the LCD module assembly.

6. Use only the cables included with the projector or specified.

Service Warning

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

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

3. Part names ------------------------------------------------ 3

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

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

6. Service notes -------------------------------------------- 16

7. Wiring diagram ----------------------------------------- 30

8. Assembly diagram-------------------------------------- 35

9. Replacement parts list ------------------------------- 38

10.RS-232C communication --------------------------- 39

11.Block diagram ------------------------------------------ 47

12.Connector connection diagram ----------------- 48

13.Basic circuit diagrams -------------------------------- 49

Contents

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.

CP-S235 (C10SM2)

1. Features

Ultra high brightness

Whisper mode equipped

User memory function

Partial magnification function

Keystone distortion correction

2. Specifications

Liquid

Crystal

Panel

Drive system TFT active matrix

Panel size 1.4cm (0.55type)

Number of pixels 800 (H) × 600 (V)

Lamp 160W UHB

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

Level Composite 1.0 ±0.1Vp-p (75Ω termination)

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

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

0.3 ±0.1Vp-p

(PAL/SECAM burst signal,75Ω termination)

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

: 0.7 ±0.1Vp-p (75Ω termination)

RGB input /

output

Analog RGB 0.7Vp-p (75Ω termination)

Sync. TTL level

Audio Input 200mVrms, 50KΩ

Speaker output 1.0W (mono)

Power supply 100~120VAC / 2.6A, 220~240VAC / 1.4A

Power consumption 240W

Dimensions 332(W) × 92(H) × 254(D) mm (No including protruding parts)

Weight 3.0Kg

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

Accessories Remote control transmitter × 1

RGB cable × 1

(Power cord)

Strap for lens cap × 1

Rivet for lens cap × 1

Battery × 2

Soft case × 1

User's manual operating guide (Book × 2 or CD-ROM × 1)

User's manual quick guide (Book× 1)

User's manual safety guide (Book× 1)

CP-S235 (C10SM2)

3. Part names

Projector

Zoom ring

Focus ring

Air filter cover

(An air filter is

inside.)

Elevator button

Elevator feet

Lens cap

Lens

(The picture is

projected from

here.)

Remote sensor

Projector (Front/Right)

AC inlet

CONTROL port

VIDEO port

AUDIO OUT port

AUDIO IN port

(from a computer)

S-VIDEO port

COMPONENT VIDEO - Y

COMPONENT VIDEO - CB/PB

COMPONENT VIDEO - CR/PR

AUDIO R port

L port

(from a video equipment)

Power switch

RGB IN port

Projector (Rear/Left)

STANDBY/ON

INPUT

POWER

LAMP

TEMP

POWER indicator

tells the state of power

supply. Refer to the section

“Power ON/OFF”.

INPUT button

toggles between the signal

ports.

MENU buttons

operate the menu function.

STANDBY/ON

button

prepares for turning the

power on/off. Refer to the

section “Power ON/OFF”.

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.

RGB VIDEO

S-VIDEO

COMPONENT VIDEO

RGB OUT port

USB port

CP-S235 (C10SM2)

Remote control transmitter

(STANDBY/ON)

button

prepares for turning the

power on/off.

VIDEO button

toggles between the signal

ports of VIDEO, S-VIDEO

and COMPONENT VIDEO.

MENU button

opens/closes the menu.

RGB button

selects the input signal of

RGB port.

BLANK button

blanks the screen

temporarily.

SEARCH button

searches for an input

signal between the

following signal ports of

RGB, VIDEO, S-VIDEO

and COMPONENT VIDEO.

VOLUME button

turns on/off the VOLUME

mode.

In the VOLUME mode,

To adjust the volume,

use the cursor

buttons.

MUTE button

mutes/restores the sound.

KEYSTONE

button

turns on/off the KEYSTONE

mode.

In the KEYSTONE mode,

To adjust the

keystone,

use the cursor

buttons.

ASPECT button

toggles between the

modes for aspect ratio.

AUTO button

executes automatic

adjustment.

MAGNIFY ON/OFF

buttons

turns on/off the MAGNIFY

mode.

In the MAGNIFY mode,

To move the

magnified area,

(1) Press the POSITION

button.

(2) Use the cursor buttons

to move the picture.

(3) Press the POSITION

button again to finish.

To shift the magnify

level,

use the cursor

buttons.

FREEZE button

freezes/reactivates the

picture.

POSITION button

turns on/off the POSITION

mode. (for RGB input)

In the POSITION mode,

To move the picture,

use the cursor buttons.

ESC button

returns to the previous display

at the menu functions.

(Available for

operating PC screen)

,,,

(Cursor) buttons

works for adjusting or

menu controlling.

(Available for

operating PC screen)

RESET button

cancels the adjustment in

progress.

* The adjustments of the

volume etc. are not reset.

ENTER button

proceeds to the next operation

at the menu functions.

(Available for

operating PC screen)

VIDEO

ASPECT

MUTE

PAGE DOWN

END

KEYSTONEFREEZE

MENUPOSITION

ENTER

ESC RESET

VOLUME

MAGNIFY

HOME PAGE UP

AUTO BLANK

RGB

OFF

KEYBOARD button

operate the PC screen.

CP-S235 (C10SM2)

4-2 Ghost adjustment

Signals for internal adjustment

30%

112/255

0/255

Adjustment procedure

Use DAC-P - GHOST - R: in the FACTORY MENU

to adjust so that R colour 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 colour ghost

is at a minimum.

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

FACTORY MENU to adjust so that B colour ghost

is at a minimum.

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

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. Normalising the video adjustment.

(Press the [MENU] button of the Remote control

transmitter to display the MAIN menu. After

pressing the [

] key, use the [ ] or [ ] key to

select [RESET]. Next, open MAIN menu and

press the [

] key to display the PICTURE1

menu. Choose RESET and perfom EXECUTE by

the same operation described above.

*note :The MAIN and PICTURE1 menu is not

reset with no signal.

4. 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).

Replaced

part

Adjustment

Ghost

(Chap.4-2)

Flicker

(Chap.4-3)

NRSH

(Chap.4-4)

White

balance

(Chap.4-5)

Colour

uniformity

(Chap.4-6)

AIR

SENSOR

(Chap.4-7)

Dichroic

optics unit

LCD/LENS

prism

assembly

Main

Board

Lamp

unit

assembly

Sensor

Board

: means need for adjustment.

: means not need for adjustment.

: means recommended.

CP-S235 (C10SM2)

4-5

White balance adjustment

(visual inspection)

Preparations

1. Perform these adjustments after the NRSH

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 [DEFAULT].

Adjustment procedure

1. First, adjust the G colour.

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 29-tone greyscale.

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

MENU so that brightness of 29 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 colours 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 trasmitter to

change to [W] monochrome in the 29-tone greyscale.

7. Adjust GAMMA, SUB-BRT, R: and B: in the

FACTORY MENU so that low-brigtness white

balance is best.

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 29 steps is best.

4-4

NRSH adjustment

(vertical stripe adjustment)

Signals for internal adjustment

/255

112

/255

136

/255

160

/255

160/255

136/255

112/255

88/255

64/255

Adjustment procedure

1. Either of adjustment patterns as shown on the left

appears, which depends on the firmware version.

If any other pattern is displayed, press the

[ENTER] key on the remote control.

Use the DAC-P - NRSH - R: in the FACTORY MENU to

adjust so that the vertical stripes with one pixel width

every 6 pixels are as inconspicuous as possible.

(Note that when the adjustment value is lowered, stripes

with 6 pixels width every 12 pixels may appear on the

right side of the darkest or the 2nd darkest tone. Should

this happen, make as inconspicuous stripes as possible

on the whole screen.)

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

FACTORY MENU to adjust vertical stripes of G colour.

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 FACTORY MENU

to adjust so that the flicker at the centre 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 centre

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 colour flicker.

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

FACTORY MENU to adjust the B colour flicker.

CP-S235 (C10SM2)

VID-AD

MIN

MID-L

MID-H

MAX

DAC-P

GAMMA

C. UNIF.

No. 1 R 0

STRIPE

C.UNIF

ON/OFF ON

OFF

G0 B0

Major adjustment lattice point No.

4-6 Colour uniformity adjustment

Preparations

1. Perform these adjustments after the white

balance adjustment described in Section 4-5.

2. Make a colour uniformity adjustment for the

following four tones.

MIN tone (approx. 3% input signal)

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

MID-H tone (approx. 22% input signal)

MAX tone (approx. 50% 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 colour 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 colour (use G

colour adjustment when a colour differential meter

is used).

Solid white (use for adjustment other than

above).

8. Reset colour-shading correction before adjustment.

When 4 tones and all colours 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

Major adjustment lattice point position

14 12

15 17

6 4 8

2 1 3

7 5 9

10 11

V/6

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

V/3

V/6

Adjust tone menu

CP-S235 (C10SM2)

Adjustment procedure 1

(when a colour 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 colour co-ordinates of adjustment

point [No.1] and make a note of them.

Assume that they are x = x1, y = y1.

Note: When the CL-100 colour and colour

difference meter is used, the [

](delta)

mode is convenient. When adjustment

point [No.1] colour co-ordinate 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 colour co-ordinates of measurement

point [No.2] and adjust [No.2][R:] and [B:] so that

the co-ordinates are as follows.

x = x1 ± 0.005 , y = y1 ± 0.010

9. Similarly, measure adjustment points [No.3] to

[No.17] and adjust their colour co-ordinates 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] colour 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 colour co-ordinates of adjustment

point [No.1] and make a note of them.

Assume that they are x = x1, y = y1.

13. Now measure the colour co-ordinates of

measurement point [No.2] and adjust [No.2][R:]

and [B:] so that the co-ordinates 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 colour co-ordinates 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].)

CP-S235 (C10SM2)

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] colour intensity only of the colour

point whose [G] colour is more intense than

measurement point [No.1].

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

Lower the [G] colour intensity only of the colour

point whose [G] colour is more intense than

measurement point [No.1], and raise the intensity

of the point whose colour intensity is lower than

measurement point [No.1].

5. Now adjust the [MIN] tone for colours [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 colour 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 colour

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

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

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

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

CP-S235 (C10SM2)

4-7 AIR-SENSOR adjustment

When the MAIN board or the SENSOR board is replaced, perform this adjustment after

completing reassembling the projector.

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

button.

Service menu comes up by following operation. Set the cursor on the OPTION menu and press the

MAGNIFY OFF button on the Remote controller. Next hold the MAGNIFY OFF button for 3 seconds or more.

2. Press the

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

automatically.

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.

Description

(a) Installing the air filter correctly.

(b)

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

the air filter.)

(d) Installing the SENSOR board correctly.

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

(f) The component I7A2 on the MAIN board stands vertically

(g) The component D981 on the SENSOR board stands vertically

5. If the all conditions above is okay, replace the MAIN board.

CP-S235 (C10SM2)

5. Troubleshooting

Check points

TSW

MAIN Board

E801

E803

E301

E800

D841

P701

E804

E802

ET01

E805

E302

E7A1

ESPL

P501

P601

D303

(LAMP)

D301

(POWER)

D302

(TEMP)

S301

(P-ON)

S302

(INP)

EA01

EV01

E102

E103

ET01

EM01

CNCT

E101

SENSOR Board

Rear view

CONTROL

Board

REMC

Board

#6430

#6800

CP-S235 (C10SM2)

Power cannot be turned on

Are

voltage input

at pins , , , of

E800 on the MAIN

board at standby

mode?

: +12V

: +17V

:+6.6V

:+4.1V

Power unit (circuit)

Fuse

on the Filter unit

Filter unit

YES

Disconnect

TSW form Power unit

(circuit). And check

TSWshortor

open?

MAIN board

Short

TSW

Open

What is the state of

TEMP indicator D302?

No light

DC FAN

Blinks

Jump to * on the page 13

What is the state of

LAMP indicator D303?

No light

Blinks

5 7

H (More than 12.6V)

Measure

voltage at the of

E803 on the MAIN

board.

L(OV)

Limit SW board

MAIN board

Is the LAMP DOOR

set?

Set the LAMP DOOR

CP-S235 (C10SM2)

Lamp does not light

What is the

state of LAMP

indicator D303 during

operation?

Power unit (ballast)

Lamp

MAIN board

Power unit (ballast)

Light

MAIN board

YES

No light

YES

Change the lamp.

Does lamp light?

Power unit (circuit)

Not light

Install the Lamp

Light

Is the LAMP

installation correct?

YES

What is the

state of TEMP indicator

D302?

No light

Blinks

DC FAN

(Lamp)

H (3.3V)

"L" = 0V

L(OV)

Is the

voltage at the

of E804 on the

MAIN board fixed to "L"

during warming-up?

"L"=0V

Measure

sure voltage at the

cathode pin of D841 on

the MAIN board.

DC FAN

(Panel)

YES

(Normal)

Does the

signal at the pin

of E801 have a amplitude

of 3.3V and a frequency

of 40Hz or

more?

MAIN board

Thermistor A

(#6430)

Infinity

about 10k

Measure

the resistance of

external air sensor

between and of #6430.

(at disconnecting

from E302)

Is the voltage

at the of E804 on

the MAIN board

set to "L" during

warming-up?

(Fan lock)

CP-S235 (C10SM2)

Picture is not displayed

when the RGB signal is input

MAIN board

LCD panel

Check at operating mode

Power unit

(circuit)

YES

Are

voltage input

at pins , , , of

E800 on the

MAIN board?

1 3 5 7

: +12V

: +17V

:+6.6V

:+4.1V

Power unit (circuit)

YES

Are

voltage input at

pins , , , of

E800 on the

MAIN board?

:+12V

:+17V

: +6.6V

: +4.1V

MAIN board

LCD module assembly

Check at operating mode

Picture is not displayed when the

VIDEO, S-VIDEO, Component Signal is input

1 3 5

CP-S235 (C10SM2)

Speaker

Check at operating mode

No sound

YES

Power unit (circuit)

Are

voltage input

at pin , , ,

of the E800 on the

MAIN board?

71 3 5

MAIN board

Turn off

the projector and

disconnect the Speaker

cable from ESPL.

Measure the resistance

of the Speaker.

: +12V

: +17V

: +6.6V

: +4.1V

about 8

0 or infinity

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.

No control to RS-232C

MAIN board

YES

Use cross cable

Check the

RS-232C cable.

Are pin No. 2 and 3

crossed?

Power unit (circuit)

Check the

power supply voltage

of E800 the voltage

correct?

CP-S235 (C10SM2)

6. Service notes

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.

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 ±30˚C

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

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

MAIN board

SENSOR board

REMC board

COVER SW board

POWER UNIT (BALLAST)

POWER UNIT (CIRCUIT)

FILTER UNIT

The boards using lead-free solder

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).

CP-S235 (C10SM2)

6-2 Cautions when removing the MAIN board

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

1) Disconnect 11 cables and remove 4 screws.

ATTENTION

Handling FPC cable

Be careful not to add strong load, such as pulling or twisting the FPC cable.

If load is added to FPC cable, convergence may shift.

In case FPC cable is being removing, or when attaching, or when opening a intake LID, or when closing,

please carry out carefully and slowly so that load is not added to FPC cable.

MAIN Board

4 screws

2) Remove 2 screw.

2 screw

AC IN

3) Lift the rear of the MAIN board to the front.

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

PCB connecting cables.

REAR

Disconnect the 2 cables.

FRONT

Lift

MAIN Board

CN200

CN100

T102

Disconnect the CNBAR from connector CN200,

while pressing the sub-board

(to prevent the stress on the sub-board).

CNBAR

Power Unit (BALLAST)

CP-S235 (C10SM2)

6-4 Before replacing the LCD/Lens prism

You should not separately replace the parts of the liquid crystal LCD/Lens prism because they only work properly

when used together. Therefore, you can either replace the LCD/Lens prism assembly or send the whole

LCD/Lens prism assembly unit back to HITACHI where we will replace the malfunctioning part,

recondition the device and send it back to you.

DISTRIBUTOR HITACHI

G Panel

Do not disassemble the unit

because replacement of separate

parts is not possible.

Return

Replacement of G Panel Reconditioning

6-5 Cleaning dust from panels and optical filters

1. Preparation

Prepare cleaning tools and materials as follows. Work in a relatively clean room so as to remove

additional dust while in removal 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 MAIN board, according to the Chapter 6-2.

(4) Remove the intake LID.

ATTENTION

Handling FPC cable

Be careful not to add strong load, such as pulling or twisting the FPC cable.

If load is added to FPC cable, Convergence may shift.

When the FPC cable is being removed, attached, when opening or closing a intake LID, perform the operation

carefully and slowly so that load is not added to FPC cable.

(5) Re-assemble the MAIN board and re-connect all the connectors.

Intake LID

FPC cable

Lift

Release two latches

CP-S235 (C10SM2)

3. Maintenance point

Each colour part has same

construction.

By using swab and air duster,

you can easily remove dust from

panel and optical filters.

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.

• While removing the dust, separated dust will be

blown off by air cooling system.

• Please pay attention not to damage panel and

filters.

5. Re-assembly

(1) Turn off the set and remove the MAIN board.

(2) Set the intake LID.

(3) Re-assemble the MAIN board.

(4) Re-assemble the set.

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

ᴾ

Panel

Swab

Holder

Optical filters

Separatied formationActua l formation

Swab

Panel

Optical filters

Holder

Air

CP-S235 (C10SM2)

6-5 Putting batteries

CAUTION

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 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.

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.)

3. Close the battery cover.

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

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Hitachi SM0541 User manual

Brand: Hitachi

Model: SM0541

Category: Data projectors

Type: User manual

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Hitachi SM0541 User manual

Hitachi SM0541 User manual

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