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Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful
radiation and materials, various measures are provided in this HITACHI Multimedia 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 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. 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 the LCD module assembly, do not hold
the FPC of the LCD module assembly.
Service Warning
1. Features --------------------------------------------------- 2
2. Specifications--------------------------------------------- 2
3. Names of each part ------------------------------------- 3
4. Adjustment ------------------------------------------------ 7
5. Troubleshooting ---------------------------------------- 14
6. Service points ------------------------------------------ 20
7. Block diagram ------------------------------------------ 24
8. Wiring diagram ----------------------------------------- 25
9. Basic circuit diagram---------------------------------- 29
10.Connector connection diagram -------------------- 54
11.Disassembly diagram--------------------------------- 55
12.Replacement parts list ------------------------------- 57
13.RS-232C communication ---------------------------- 58
Contents
SM0522
CPX990W (P4X2)
PJ1065-2 (P4X2)
SERVICE MANUAL
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
February 2002 Digital Media Systems Division


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2
1. Features
High brightness, High resolution
Compact size, light weight for portability
RGB output terminal
RS-232C Communication
Mouse emulation
Power zoom and power focus functions
Complies with VESA DDC1/2B specifications
Auto-adjustment function
2. Specifications
Liquid crystal
panel
Lamp
Video input
Drive system
Panel size
Number of pixels
System
Level
System
Level
RGB
Audio
Speaker output
Power supply
Power consumption
Dimensions
Weight
Temperature range
Accessories
Digital input
Input
Output
Analog
input/output
TFT active matrix
1.3 inches
1024 (H) × 768 (V)
275W UHB
Composite
Component
Y/C
NTSC, 4.43NTSC, PAL, M-PAL, SECAM (N-PAL : only compulsion mode)
480i, 480p, 625I, 720p, 1080i
Y
1.0Vp-p (75
termination)
Cb/Cr
0.7Vp-p (75
termination)
Pb/Pr
0.7Vp-p (75
termination)
Type
T.M.D.S
Video signal
DC:150~1200mV, AC:1.56Vp-p
Sync signal
TTL level
Type
R.G.B separate
Video signal
0.7Vp-p (75
termination)
Sync signal
H/V separate or composite, TTL level
200mVrms, 50k
or less
0~200mVrms, 1k
1.2W + 1.2W (stereo)
AC100~120V/4.7A, AC220~240V/2.0A
440W
308.5 (W) × 144 (H) × 395 (D) mm
6.5kg (14.3lbs)
Operation
: 0~35°C
Storage
: -20~60°C
Remote control transmitter × 1
RGB cable × 1
Mouse cable × 1
Component cable × 1
Composite
Y/C
1.0Vp-p (75
termination)
0.3Vp-p (PAL/SECAM burst signal, 75
termination)
Y : 1.0Vp-p (75
termination)
C : 0.286Vp-p (NTSC burst signal, 75
termination)
POWER cord × 3
BATTERIES LR6 × 2
User's manual (with Safety Instructions)× 1


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3
3. Names of each part
Parts names
Control Panel
Front/Right View
Rear/Left View
Terminal Panel
(Refer below)
Terminal
Panel
DVI Terminal
S-VIDEO Terminal
VIDEO Terminal
AUDIO(MONO)/L
Terminal
AUDIO R Terminal
USB Terminal
AUDIO IN
AUDIO
OUT
RGB 1
DVI
RGB 2
RGB OUT
CONTROL
RGB IN
2
1
COMPO
NENT
VIDEO
S-VIDEO
VIDEO
(MONO)/L
AUDIO
R
CB/PB
Y
CR/PR
DVI
USB
ZOOM
FOCUS
KEYSTONE
INPUT
MENU
POWER TEMP
LAMP
STANDBY/ON
RESET
ZOOM Button
KEYSTONE Button
STANDBY/ON Button
LAMP Indicator
POWER Indicator
FOCUS Button
INPUT Button
MENU Button
RESET Button
TEMP Indicator
Remote Control Sensor
Lens
Filter Cover
( Air Filter )
Foot Adjuster
Lens Cap
Control Panel
Ventilation Openings
(exhaust)
Carrying Handle
Filter cover
Air Filter and Intake
for the Cooling Fan
Foot Adjuster
Remote Control Sensor
Speaker
Power Switch
AC Inlet
(to Power Cord)
RGB IN 1 Terminal
RGB IN 2 Terminal
RGB OUT Terminal
CONTROL Terminal
AUDIO IN RGB1/DVI Terminal
AUDIO IN RGB2 Terminal
AUDIO OUT Terminal
COMPONENT VIDEO
Y Terminal
CB/PB Terminal
CR/PR Terminal
(
)


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4
REMOTE CONTROL TRANSMITTER
· Keep the remote control transmitter away from children and pets.
· Do not give the remote control transmitter any physical impact. Take care not to drop.
· Do not place the heavy objects on the remote control transmitter.
· Do not wet the remote control transmitter or place it on any wet object.
· Do not place the remote control transmitter close to the cooling fan of the projector.
· Do not disassemble the remote control transmitter.
NOTE
ZOOM Button
These functions works when the mouse control function is activated. Remember, the POSITION,
BLANK ON and MENU ON functions disable the mouse control function.
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.
FOCUS Button
ZOOM
FOCUS
STAN
DBY/
ON
LASER
BLANK
RGB
VIDEO
AUT
O
MENU
MENU
SELE
CT
KEYST
ONE
RESET
FREE
ZE
PinP
MAGNIFY
POSITION
OFF
VOLUME
MUTE
Complies with 21 CFR 1040. 10 and 1040. 11 except for deviations
pursuant to Laser Notice No.50, dated 2001.7.26
SMK CORPORATION
6-5-5 Togoshi Shinagawa-ku, Tokyo, JAPAN 142-8511
MANUFACTURED Novemver 2001
PLACE OF MANUFACTURER: A
CA UTION
LASER RADIATION-
DO NOT STARE INTO BEAM
MAX. OUTPUT: 1mW
WAVE LENGTH: 650nm
CLASS2 LASER PRODUCT
LASER RADIATION
IEC60825-1 : 1993+A1:1997
MAX. OUTPUT: 1mW
WAVE LENGTH: 650nm
DO NOT STARE INTO BEAM
CLASS2 LASER PRODUCT
AVOID EXPOSURE-
LASER RADIATIONS IS
EMITTED FROM THIS
APERTURE
STANDBY/ON Button
LASER Button
VIDEO Button
Disk Pad
Used to operate the
mouse shift function and
left click function.
AUTO Button
MENU Button
MENU SELECT Button
Used to click the left
mouse button.
,
,
,
Button
Used to operate the
mouse shift function.
MAGNIFY Button
BLANK Button
RGB Button
MOUSE / RIGHT Button
Used to click the right
mouse button.
RESET Button
Used to click the right
mouse button.
FREEZE Button
MUTE Button
PinP Button
KEYSTONE Button
VOLUME Button
POSITION Button


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5
Message
Contents
CHANGE THE LAMP
AFTER REPLACING LAMP,
RESET THE LAMP TIME.
(
*1)
The usage time of lamp will be reaching 2000 hr
shortly.
It is recommended to replace the lamp soon. Prepare a
new lamp as a replacement.
CHANGE THE LAMP
AFTER REPLACING LAMP,
RESET THE LAMP TIME.
THE POWER WILL TURN OFF
AFTER
** hr.
(
*1)
The usage time of lamp will be reaching 2000 hr shortly.
It is recommended to replace the lamp within * *
hours.
It might be happened that the lamp is cut off before * * hr
by any chance. Power will be switched OFF
automatically in * * hours. Replace the lamp as shown in
P.21~22 "Lamp". Always reset the lamp timer after
replacing the lamp.
CHANGE THE LAMP
AFTER REPLACING LAMP,
RESET THE LAMP TIME.
THE POWER WILL
TURN OFF
AFTER 0 hr.
The usage time of lamp is about to reach. Power will be
switched OFF in a few minutes.
Switch power OFF immediately and replace the lamp as
shown in P.21~22 "Lamp". Always reset the lamp timer
after replacing the lamp.
NO INPUT IS DETECTED
ON
***
No input signal found.
Check signal input connections and signal sources.
SYNC IS OUT OF RANGE
ON
***
The horizontal or vertical frequency of the input signal is
not within the specified range.
Check the specifications of the equipment and the signal
source.
CHECK THE AIR FLOW
The internal temperature has risen.
Switch power OFF, and wait 20 minutes until the
equipment cools.
Check the following and Switch power ON again.
* Are the ventilation openings blocked.
* Is the air filter dirty.
* Is the ambient temperature in excess of 35°C.
(*1) This message is cleared automatically after approximately three minutes, and
appears every time power is switched ON.
(*2) The unit has a function to turn the power off which will be active when the usage time reaches
2000 hr. However the life of lamp might be much different among lamps, so that it might be
happened that a lamp is cut off before the function is active.
NOTE
OSD Message
The messages as described below may appear on the screen at power ON. Take the appropriate measures when
such messages appears.