SERVICE MANUAL
CPX320W
SM0508
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
March 2001
Digital Media Systems Division
Contents
Caution
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 LDC 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 fingers. The lamp becomes too 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 to the LCD module assembly, do not hold
the FPC of the LCD module assembly.
1. Features -------------------------------------------------- 2
2. Specifications -------------------------------------------- 2
3. Names of each part ------------------------------------ 3
4. Adjustment ----------------------------------------------- 5
5. Troubleshooting ---------------------------------------- 11
6. Service points ------------------------------------------ 17
7. Block diagram ------------------------------------------ 22
8. Connector connection diagram --------------------- 23
9. Wiring diagram ----------------------------------------- 24
10.Basic circuit diagram ---------------------------------- 27
11.Disassembly diagram --------------------------------- 55
12.Replacement parts list -------------------------------- 57
13.RS-232C communication ---------------------------- 58
-- 2 --
CP-X320W
1. Features
High brightness, High resolution
Compact size, light weight for portability
RS-232C Communication
Complies with VESA DDC1/2B specifications
Auto-adjustment function
2. Specifications
Liquid crystal
panel
Lamp
Video input
RGB input
Drive system
Panel size
Number of pixels
System
Level
Video signal
Sync signal
RGB output
Audio input
Speaker output
Power supply
Power consumption
Dimensions
Weight
Temperature range
Accessories
Video signal
Sync signal
TFT active matrix
0.9 inches
1024 (H) × 768 (V)
160W UHB
Composite
Y/C
NTSC, 4.43NTSC, PAL, M-PAL, PAL60, N-PAL or SECAM
Analog RGB input
0.7Vp-p (75
termination)
H/V separate
TTL level
Analog RGB output
0.7Vp-p (75
load output)
H/V separate
TTL level
200mVrms, 47k
1W + 1W (stereo)
AC100~120V/2.8A, AC220~240V/1.2A
250W
298 (W) × 94.6 (H) × 228 (D) mm (expect the foot adjuster)
3.25kg (7.16lbs)
Operation
: 0~35°C
Storage
: -20~60°C
Remote control transmitter × 1
RGB cable × 1
Audio/Video cable × 1
Mouse cable (PS/2) × 1
POWER cord × 3
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)
Battery × 2
Carrying bag × 1
Handle × 1
User's manual (with Safety Instructions)× 1
-- 3 --
CP-X320W
3. Names of each part
Main unit
S-VIDEO Terminal
VIDEO IN Terminal
AUDIO IN L Terminal
AUDIO IN R Terminal
AUDIO IN 1 Terminal
AUDIO IN 2 Terminal
AUDIO OUT Terminal
Foot Adjuster Button
Air Filter and Intake
(for the Cooling Fan)
Rear Foot Adjuster
INPUT Button
LAMP Indicator
TEMP Indicator
POWER Indicator
RESET Button
MENU Button
Ventilation Openings
(exhaust)
Terminal Panel
(Refer below)
Remote Control Sensor
RGB IN 1 Terminal
RGB IN 2 Terminal
CONTROL Terminal
RGB OUT Terminal
USB Terminal
Power Switch
AC Inlet
(to the Power Cord)
Ventilation Openings
(Intake)
Zoom Knob
Focus Ring
Remote Control Sensor
Lens
Slide Lens door
Foot Adjuster
Control Panel
FRONT/LEFT VIEW OF THE PROJECTOR
REAR/RIGHT VIEW OF
THE PROJECTOR
TERMINAL PANEL
Speaker
Handle Hook
STANDBY/ON Button
MUTE Button
-- 4 --
CP-X320W
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.
Remote control transmitter
STANDBY/ON button
BLANK button
DISK PAD
AUTO button
MENU button
MENU SELECT button
,
,
,
button
MAGNIFY button
Used to operate the
mouse shift function
and left click function.
Used to click the
left mouse button.
Used to operate the
mouse shift function.
VIDEO button
LASER button
RGB button
MOUSE / RIGHT button
POSITION button
RESET button
FREEZE button
VOLUME button
MUTE button
TIMER button
Used to click the
right mouse button.
Used to click the
right mouse button.
REMOTE CONTROL TRANSMITTER
NOTE:
To prevent any malfunction;
· 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 in case of malfunction. Please bring it to the service station.
: These functions works when the mouse control function is activated. Remember, the POSITION,
BLANK ON and MENU ON functions disable the mouse control function.
-- 5 --
CP-X320W
4. Adjustment
4 - 1 Before adjusting
1. Before starting adjustment, warm up the projector
for about 10 min. (Blank white)
2.Set Zoom Wide to Max. and project an image a
distance of 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.)
*note : The setup menu is not displayed on with no
signal.
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 for 5 sec. or
more (the Adjustment menu will appear).
4 - 2 Ghost adjustment
Signals for internal adjustment
30%
30%
96/255
bit
0/255
bit
Adjustment procedure
1. Use DAC-P - GHOST-W: in the Adjustment menu to
adjust so that ghost is at a minimum.
(Set the adjustment value to 16, then raise the
value. When a ghost appears to the left of a vertical
line, reduce the value by 2 steps.)
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 Adjust 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.