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 fire, 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 replac
ing the lamp, avoid burns to your fingers. The lamp becomes very hot.
2. Never touch the lamp bulb with a finger or anything else. Never drop it or give it a shock. Th
is 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 fa
n 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. Specifications --------------------------------------------- 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 diagram
s -------------------------------- 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.
2
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
(75 termination)
S-Video Y : 1.0 ±0.1Vp-p (75 termination)
C : 0.286 ±0.1Vp-p (NTSC burst signal,75 termination)
0.3 ±0.1Vp-p (PAL/SECAM burst signal,75 termination)
Component
Y: 1.0 ±0.1Vp-p (75 termination)
CB/PB: 0.7 ±0.1Vp-p (75 termination)
CR/PR: 0.7 ±0.1Vp-p (75 termination)
RGB input /
output
Analog RGB
0.7Vp-p (75 termination)
Sync.
TTL level
Audio Input
200mVrms, 50
K
Speaker output
1.0W (mono)
Power supply
100~120V
AC / 2.6A, 220~240VAC / 1.4A
Power consumption
240W
Dimensions
332(W) × 92(H) × 254(D) mm (No including protruding parts)
Weight
3.0
Kg
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)
3
CP-S235 (C10SM2)
3.
Part names
P
rojector
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
MENU
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
4
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
KEYSTONE
FREEZE
MENU
POSITION
ENTER
ESC
RESET
VOLUME
MAGNIFY
HOME
PAGE UP
AUTO
BLANK
RGB
SEARCH
OFF
ON
KEYBOARD button
operate the PC screen.
5
CP-S235 (C10SM2)
4-2 Ghost adjustment
Signals for internal adjustment
30%
30%
112/255
0/255
Adjustment procedure
1. Use DAC-P - GHOST - R: in the FACTORY MENU
to adjust so that R colo
ur 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 colo
ur ghost
is at a minimum.
3. In the same way, use DAC-P - GHOST-B: in the
FACTORY MENU to adjust so that B colo
ur 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. Normali
sing 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.
5. Perform all adjustments from the FACTORY MENU.
Perform the following operations to display the
FACTORY MENU.
a. 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)
Colo
ur
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.