Hitachi CP-X380W User manual

SM0519
CPX380W (C4X3)
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
December 2001 Digital Media Systems Division
SERVICE MANUAL
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
When replacing the lamp, avoid burns to your fingers, the lamp becomes very hot.
1.Never touch the lamp bulb with a finger or anything else.
2. 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.
6.Use the cables which are included with the projector or specified.
ServiceWarning
1. Features ---------------------------------------------------2
2. Specifications---------------------------------------------2
3. Names of each part-------------------------------------3
4. Adjustment ------------------------------------------------5
5. Troubleshooting ---------------------------------------- 12
6. Service points ------------------------------------------ 17
7. Block diagram ------------------------------------------ 22
8. Connector connection diagram -------------------- 23
9. Wiring diagram----------------------------------------- 24
10.Basic circuit diagram---------------------------------- 30
11.Disassembly diagram--------------------------------- 48
12.Replacement parts list ------------------------------- 50
13.RS-232C communication---------------------------- 51
Contents
PJ750-2 (C4X3)

2
CP-X380W
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
RGB
signal
input
Video
signal
input
Signal
output
Drive system
Panel size
Number of pixels
RGB IN
AUDIO IN
AUDIO IN
VIDEO IN
RGB OUT
AUDIO OUT
S-VIDEO IN
COMPONENT
VIDEO
Audio input
Speaker output
Power supply
Power consumption
Dimensions
Weight
Temperature range
Accessories
TFT active matrix
0.9 inches
1024 (H) × 768 (V)
200W UHB
Video:Analog 0.7Vp-p, 75 terminator
H/V. sync.: TTL level (positive/negative)
Composite sync.: TTL level
D-sub 15-pin shrink jack
Video:Analog 0.7Vp-p, 75 output impedance (positive)
H/V. sync.: TTL level (positive/negative)
Composite sync.: TTL level
D-sub 15-pin shrink jack
Brightness signal: 1.0Vp-p, 75 terminator
Color signal: 0.286Vp-p (NTSC, burst signal), 75 terminator
0.3Vp-p (PAL/SECAM, burst signal), 75 terminator
Mini DIN 4-pin jack
200mVrms, 47k (max. 3.0Vp-p)
Stereo mini jack
200mVrms, 50k (max. 3.0Vp-p)
RCA jack
1.0Vp-p, 75 terminator
RCA jack
1.0Vp-p, 75 terminator (positive)
0.7Vp-p, 75 terminator (positive)
0.7Vp-p, 75 terminator (positive)
200mVrms, 47k
1W +1W (stereo)
AC100~120V/3.3A, AC220~240V/1.4A
310W
298 (W) ×94.6 (H) ×228 (D) mm
3.25kg (7.2lbs)
Operation : 0~35°C
Storage : -20~60°C
Remote control transmitter ×1
RGB cable ×1
Component cable ×1
Mouse cable (PS/2) ×1
POWER cord ×3
200mVrms, output impedance 1k (max. 3.0Vp-p)
Stereo mini jack
Battery ×2
Carrying bag ×1
Handle ×1
User's manual (with Safety Instructions)×1
1
2
1
2
Y
L
R
C
B /C R
P B /P R
PJ750-2

3
CP-X380W
3. Names of each Part
Parts names
Control Panel
Power Switch
AC Inlet
(to the Power Cord)
Ventilation Openings
(Intake)
Zoom Knob
Focus Ring
Remote Control Senso
r
Lens
Lens Cap
FRONT/LEFT VIEW OF
THE PROJECTOR
Speaker
Handle Hook
STANDBY/ON Button
KEYSTONE Button
Foot Adjuster Button
Filter Cover
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)
REAR/RIGHT VIEW OF
THE PROJECTOR Terminal Panel
(Refer below)
TERMINAL PANEL
S-VIDEO Terminal
COMPONENT VIDEO
Y Terminal
CB/PBTerminal
CR/PRTerminal
VIDEO IN Terminal
AUDIO IN R Terminal
AUDIO IN L Terminal
AUDIO IN 1 Terminal
AUDIO IN 2 Terminal
AUDIO OUT Terminal
Remote Control Senso
r
RGB IN 1 Terminal
RGB IN 2 Terminal
CONTROL Terminal
RGB OUT Terminal
USB Terminal
AUDIO IN VIDEO IN S-VIDEO IN
AUDIO
IN AUDIO OUT
1
12
2USB
RGB IN
RGB OUT CONTROL
( )
Foot Adjuster
PJ750-2

4
CP-X380W
Remote control transmitter
STANDBY/ON
LASER
BLANK
RGB
VIDEO
AUTO
MENU
MENU SELECT
KEYSTONE
RESET
FREEZE
MAGNIFY
POSITION
OFF
VOLUME
MUTE
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
KEYSTONE Button
VOLUME Button
POSITION Button
,,,
• 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
These functions works when the mouse control function is activated. Remember, the P SITI N,
BLANK N and MENU N 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 directl into the laser beam outlet or point
the laser beam at other people. The laser beam can cause vision problems.
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
CAUTION
LASER RADIATION-
DO NOT STARE INTO BEAM
MAX. OUTPUT: 1mW
WAVE LENGTH : 650nm
CLASS2 LASER PRODUCT
LASER RADIATION
IEC60 25-1 : 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
PJ750-2

5
CP-X380W
4. Adjustment
4-1 Before adjusting
1. Before starting adjustment, warm up the projector
for about 10 minutes.(Blank white)
2. Set Zoom Wide to Max. And project an image a
distance of more than 40 inches and set the
normal at “WHISPER” mode.
3. Normalising the video adjustment.
(Press the [MENU] button of the Remote control
transmitter to display the Setup menu, and then press
the [RESET] button.And select the [DEFAULT].)
*note : The setup menu is not displayed when no
signal.
4-2 Ghost adjustment
Signals for internal adjustment
30%
30%
112/255
bit
0/255
bit
Adjustment procedure
1. Use DAC-P - GHOST - R: in the Adjustment 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 2 steps.)
2. In the same way, use DAC-P - GHOST-G: in the
Adjustment menu to adjust so that G colour ghost is
at a minimum.
3. In the same way, use DAC-P - GHOST-B: in the
Adjustment menu to adjust so that B colour ghost is
at a minimum.
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 Adjustment 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
Adjustment menu to adjust the G colour flicker.
4. In the same way, use DAC-P - V.COM-B: in the
Adjustment menu to adjust the B colour flicker.
4. Set the other [MENU] items as follows.
a. GAMMA in the IMAGE menu is NORMAL.
b. COLOUR TEMP. in the IMAGE menu is NORMAL.
c. WHISPER in the OPT menu is NORMAL.
5. 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 one time. And
press the [RESET] button again for 5 seconds
or more (the Adjustment menu will appear).
Model PJ750-2 only
PJ750-2

6
CP-X380W
4-4 NRSH adjustment (vertical stripe adjustment)
Signals for internal adjustment Adjustment procedure
1.Makethis adjustment after completing the
adjustment in 4-3 Flicker adjustment.
2. Use DAC-P - NRSH - R: in the Adjustment menu to
adjust so that the vertical lines spaced every 6 or
12 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.)
3. In the same way, use DAC-P - NRSH - G: in the
Adjustment menu to adjust vertical stripes of G colour.
4. In the same way, use DAC-P - NRSH - B: in the
Adjustment menu to adjust vertical stripes of B colour.
4-5 White balance adjustment
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 Adjustment
menu, press the [RESET] key and select
[DEFAULT].
Now press the [RESET] key again and press the
[MAGNIFY-OFF] button of the Remote control
transmitter for 5 seconds or more (the confirming
to “MICRO” reset menu will appear).
Adjustment procedure
1. First, adjust the G colour.
2. BRIGHT and CONTRAST set to MAX in the Setup menu.
3. Place the cursor on Slide Show in the Adjustment
menu [A/D], press the [ ] key three times to
display G monochrome and adjust the luminance
at the centre of the screen. Makeanote of the
setting (here assumed to be A [lx]). Press the
MENU key to return.
4. BRIGHT and CONTRAST is returned to default in
the Setup menu.
5. Adjust Gamma, SHIFT, and G: in the Adjust menu
so that luminance (Y) at the centre of the screen is
adjusted as follows.
Y = A x 0.798 ± 1 [%]
6. Adjust Gamma, 86%, and G: in the Adjust menu so
that luminance (Y) at the centre of the screen is
adjusted as follows.
Y = A x 0.675 ± 1 [%]
7. Adjust Gamma, 75%, and G: in the Adjust menu so
that luminance (Y) at the centre of the screen is
adjusted as follows.
Y = A x 0.504 ± 1 [%]
8. Adjust Gamma, 43%, and G: in the Adjust menu so
that luminance (Y) at the centre of the screen is
adjusted as follows.
Y = A x 0.147 ± 2 [%]
9. Adjust Gamma, 29%, and G: in the Adjust menu so
that luminance (Y) at the centre of the screen is
adjusted as follows.
Y = A x 0.060 ± 2 [%]
10.Adjust Gamma, 14%, and G: in the Adjust menu so
that luminance (Y) at the centre of the screen is
adjusted as follows.
Y = A x 0.014 ± 2 [%]
192
/255
bit
168
/255
bit
144
/255
bit
120
/255
bit
96
/255
bit
72
/255
bit
48
/255
bit
24
/255
bit
PJ750-2

7
CP-X380W
11.Adjust Gamma, 0%, G: and R: and B: so that the
following values.
[0%][R:] = -96
[0%][G:] = -96
[0%][B:] = -112
12.Now, adjust the R and B colours.
13.Adjust Gamma, 86%, R: and B: so that the colour
coordinates (x, y) at the centre of the screen take
on the following values.
x = 0.290 ± 0.001
y = 0.340 ± 0.002
14.Adjust Gamma, 93%, R: and B: so that the
following values.
[93%][R:] = [86%][G:]
[93%][B:] = [86%][B:]
15.Adjust Gamma, 75%, R: and B: so that the colour
coordinates (x, y) at the centre of the screen take
on the following values.
x = 0.286 ± 0.001
y = 0.330 ± 0.002
16.Adjust Gamma, 43%, R: and B: so that the colour
coordinates (x, y) at the centre of the screen take
on the following values.
x = 0.286 ± 0.001
y = 0.330 ± 0.002
17.Adjust Gamma, 29%, R: and B: so that the colour
coordinates (x, y) at the centre of the screen take
on the following values.
x = 0.282 ± 0.001
y = 0.320 ± 0.002
18.Adjust Gamma, 14%, R: and B: so that the colour
coordinates (x, y) at the centre of the screen take
on the following values.
x = 0.270 ± 0.001
y = 0.290 ± 0.002
Adjustment operations (reference)
93% operation
014 29 43 86 9375 100
Brightness
Adjustment
point
Input signal (%)
86% operation
014 29 43 86 9375 100
Brightness
Adjustment
point
Input signal (%)
75% operation
014 29 43 86 9375 100
Brightness
Adjustment
point
Input signal (%)
43% operation
014 29 43 86 9375 100
Brightness
Adjustment
point
Input signal (%)
29% operation
014 29 43 86 9375 100
Brightness
Adjustment
point
Input signal (%)
14% operation
014 29 43 86 9375 100
Brightness
Adjustment
point
Input signal (%)
0% operation
014 29 43 86 9375 100
Brightness
Adjustment
point
Input signal (%)
x = 0.290 ± 0.001
y = 0.350 ± 0.002
x = 0.284 ± 0.001
y = 0.340 ± 0.002
x = 0.280 ± 0.001
y = 0.340 ± 0.002
x = 0.270 ± 0.001
y = 0.330 ± 0.002
x = 0.260 ± 0.001
y = 0.300 ± 0.002
Model PJ750-2
Model PJ750-2
Model PJ750-2
Model PJ750-2
Model PJ750-2
PJ750-2

8
CP-X380W
VID-AD
ON
DAC-P GAMMAC. UNIF.
No. 1 R 0
LEVEL
BLACK
MIN MID-L MID-H MAX
STRIPE
OFF
G 0 B 0
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.Makeacolouruniformity adjustment for the
following four tones.
MIN tone (approx. 10% input signal)
MID-L tone (approx.21% input signal)
MID-H tone(approx. 50% input signal)
MAX tone (approx. 75% input signal)
3. Place the cursor on the tone to be adjusted in the
Adjust menu and press the [ ] key. This displays
the Adjust Tone menu at the bottom of the screen.
Select the major adjustment lattice point No. and
colour, 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 colouruniformity 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 “ON”in the Adjust Tone menu and press the
[] key. To turn it on again, place the cursor on
OFF in the Adjust Tone menu and press the [ ]
key.
7. Although this adjustment can also be made using
internal signals, we will here use the [MENU
SELECT] key on the Remote control transmitter to
select the following two signals.
Solid monochrome adjustment colour (use G color
adjustment when acolourdifferential meter is
used).
Solid white (use for adjustment other than
above).
8. Reset colour-shading correction before adjustment.
When 4tones and all colours are to be reset,
place the cursor on [C.UNIF.] in the Adjustment
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.
Adjust menu
Adjust Tone menu
Major adjustment lattice point position
14 12
13
16
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/3
V/6
PJ750-2

9
CP-X380W
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 [MENU SELECT] 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
ofY2 andY3.
Y2 = (Y2 +Y3 ) / 2 ± 2 [%]
Y3 = (Y2 +Y3 ) / 2 ± 2 [%]
5. No.10 and No.11 adjustment point have the
average ofY10 andY11.
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 [MENU SELECT] key on the Remote control
transmitter to change to solid white.
7. Measure the colour 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 colour and colour difference
meter is used, the [ ](delta) mode is
convenient. When adjustment point [No.1]
colour coordinate 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 colourcoordinates 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
9. Similarly, measure adjustment points [No.3] to
[No.17] and adjust their colour 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] colour adjustments.
11.Then adjust [MIN] tone [R] and [B].
Select [No.2] [B:] and press the [MENU SELECT]
key on the Remote control transmitter to change to
solid white.
12.Measure the colour coordinates of adjustment point
[No.1] and make a note of them.
Assume that they are x = x1, y = y1.
13.Nowmeasure the colourcoordinates 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 (Target)
x = x1 ± 0.020 , y = y1 ± 0.040
14.Similarly, measure adjustment points [No.3] to
[No.17] and adjust their colour 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].)
PJ750-2

10
CP-X380W
Adjustment procedure 2
(visual inspection)
1. First adjust [MIN] tone [G:].
2. Select [No.2] [G:].
If the background is [G] monochrome, press the
[MENU SELECT] 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 colourintensity 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
colour 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.
8. 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.
PJ750-2

11
CP-X380W
8
3
16
17
9
11
6
14
2
12
15 13
10
7
4
1
5
8
3
16
17
9
11
14 12
15 13
10
4
1
5
6
2
7
8
3
16
17
9
11
6
2
12
13
14
15
10
7
4
1
5
14 12
15 13
10
4
1
5
6
2
7
8
3
16
17
9
11
17
9
15 13
75
3
17
9
11
15 13
10 1
5
6
2
7
8
16
17
9
6
12
13
7
4
5
14 12
10
4
1
6
2
8
3
16
17
9
11
311
2
10 1
16
14 12
8
648
4
16
14 12
311
2
14
15
10 1
5
7
15 13
17
9
15 13
75
3
17
9
11
6
17
9
6
13
75
14 12
10
4
6
2
8
16
311
2
10 1
16
14 12
8
648
4
16
14 12
311
2
14
15
10
5
7
15
10 1
2
13
15 5
7
12
4
1
8
17
13
1311
16
9
5
17
9
15 13
75
3
17
9
11
6
17
9
6
13
75
14 12
10
4
6
2
8
16
311
21
16
14 12
8
48
4
16
14 12
3
2
14
15
10
5
7
15
10 1
2
13
5
7
12
4
1
17
13
13
5
11
9
11
8
16
15
10
6
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
PJ750-2

12
CP-X380W
5. Troubleshooting
Check points for troubleshooting
E805 ESPR
E801
L818 E808 E800
E302
I256
I812
ESPL
E806
S201
P502
P702
P602
E803
E802 I841
I306
IV22
I102
EV01
CHV34
CHV35
CHV36
CHV33
CHV26
CHV27
CHV28
CHV29 E101
CH102
CH104
CH112
CH106
CH113
E807
S306
S307
S302
S305 S304
S303
S308
S309
E804
D302
D301
D303
PJ750-2
DRIVE PCB

13
CP-X380W
Power cannot be turned on
Are these
voltages present on the
Drive PCB at standby
mode? : +14V
: +17V
: +6V
: +4.3V
I812
IV22
I102
I841
Power Unit (Circuit) Fuse
on Power Unit (Circuit)
NO
YES
Disconnect
TSW from Power Unit
(Circuit). And check
TSW short or
open?
Drive PCB
Lamp
or
Power Unit (Ballast)
Short
TSW
Open
What is the state of
TEMP indicator
D301?
No light
DC FAN (intake)
Lights
Blinks DC FAN (exhaust)
or
Sensor PCB
What is the state of
LAMP indicator
D302?
No light
Blinks
1
1
1
1
Is the LAMP
connected?
OK
Set the LAMP again
Are the
voltagesat pin and
of E807the same?
NO
YES
Limit SW PCB
Drive PCB
Is the LAMP COVER
set?
OK
Set the LAMP COVER
NG
NG
1 2
PJ750-2

14
CP-X380W
Lamp does not light
What is the state of
LAMP indicator D302
during operation?
Power Unit (Ballast)
Lamp
Drive PCB
Power Unit (Ballast)
Light Light
Drive PCB
YES
No light
NO
YES
Change the lamp.
Does lamp light?
Power Unit (Circuit)
No light
NO
What is the state of
TEMP indicator
D301?
No light
Blinks
Drive PCB
Connect
E302 (Sensor
PCB)
NO
"L" = 0V
L (0V)
YES
Is the
voltage at collector
of Q801 on the Drive
PCB fixed to "L" during
warming-up?
"L" = 0V
Is E302
(Sensor PCB)
securely connected to
Drive PCB by
the cable?
DC FAN H (3.3V) Measure
voltage at
the of I256 on the
Drive PCB.
Sensor PCB Infinity
about 10k
Measure
the resistance of
TH950 on the Sensor
PCB with
disconnected
E302.
Is the voltage
at pin of L818 on
the Drive PCB
set to "L" during
warming-up?
8
2
PJ750-2

15
CP-X380W
Picture is not displayed when
the RGB signal is input
Are these signals
present at each pin listed on
the Drive PCB?
Signal PCB
IC (IS01)
EL4332CS
Drive PCB LCD panel
NO
YES
Check at operating mode
CH106 : R signal
CH102 : G signal
CH104 : B signal
CH112 : H sync
CH113 : V sync
Power Unit
(Circuit)
Change the
IS01 on the Signal
PCB, is it repaired? YES
NO
NO
YES
Are these voltages
present at each pin listed on
the Drive PCB?
1
1
1
1
I812 : +14V
IV22 : +17V
I102 : +6V
I841 : +4.3V
Power Unit (Circuit)
NO
YES
Are these
voltages present at
each pin listed on the
Drive PCB?
Drive PCB LCD module
Are signals
present at each
pin listed onIV01 ofthe
the Drive
PCB?
Measure
the voltage at pin
of I102 on the Drive
PCB.
NO
YES
0V
5V Drive PCB
Signal PCB
Check at operating mode
CHV29 : VIDEO (Composite)
CHV28 : S-VIDEO (Y)
CHV27 : S-VIDEO (C)
CHV34 : Component (Y)
CHV35 : Component (Cb)
CHV36 : Component (Cr)
Picture is not displayed when the VIDEO,
S-VIDEO, Component Signal is input
1
1
1
1
I812 : +14V
IV22 : +17V
I102 : +6V
I841 : +4.3V
3
PJ750-2

16
CP-X380W
Drive PCB Speaker
Check at operating mode
No sound
NO
YES
Signal PCB
Are these signals
present at each pinson
the Drive PCB?
CHV25 : Audio (L)
CHV33 : Audio (R)
Are these
signals present at the
following pinsof I306 on
the Drive PCB?
Signal PCB
YES Drive PCB
NO
: RX
: TX
Pin No RS-232C
1
2
3
6
7
9
10
12
13
14
SEL0
RTS
GND
RDP
TDP
Check at operating mode
9
13
Cannot control to RS-232C
PJ750-2

17
CP-X380W
6. Service points
Caution when removing the Upper Case Assembly
When you remove the Upper Case Assembly, avoid to damage wires between speakers on the upper case and
DrivePCB on the bottom case assembly.
Caution when removing the Drive PCB
When removing the DrivePCB, there is danger of damaging the connector connecting cables and the
Signal PCB.
1) Disconnect 10 cables and remove 6 screws.
E801 E808
E302
E806
E803
E802
E807
E804
2) Lift the rear part of the DrivePCB to the front.
3) Disconnect 2 cables lifting the DrivePCB.
Remove 6 screws
DrivePCB
Disconnect the 2 board-to-board connector.
FRONT
Lift up
REAR
Disconnect 2 cables
DrivePCB
Wire from Speaker
Speaker
PWB ass’y Drive
PJ750-2

18
CP-X380W
Do not disassemble the unit
because replacement of separate
parts is not possible.
For repairs of the product, please
contact our distributor.
DISTRIBUTOR HITACHI
Replacement of G Panel Reconditioning
Return
G Panel
Before Replacing the LCD / Lens Prism
You should not replace separately the parts of the liquid crystal LCD / Lens Prism because they only work properly
when used together.Therefore, regarding these parts, you can either replace the LCD / Lens Prism assemblyor send
the whole LCD / Lens Prism assembly back to Hitachi, where we will replace the malfunctioning part, recondition
the device and send it back to you. Please contact our distributor.
Air Filter
Cleaning the Air filter
The air filter should be cleaned as described below at intervals of approximately 300 hours.
1. Switch the projector power supply OFF, and remove the power cord from the power outlet.
2. Clean the air filter with a vacuum cleaner.
Replacing the Air filter
Replace the air filter if contamination cannot be removed, or if it is damaged.
1. Remove the filter cover.
2. Remove the old filter.
3. Set the new filter and filter cover.
CAUTION
Switch power OFF and remove the power cord from the power outlet before beginning mainte-
nance work. Please read the separate “SAFETY INSTRUCTIONS”thoroughly to ensure that
maintenance is performed correctly.
Replace the air filter if contamination cannot be removed, or if it is damaged. Contact your dealer
in such case.(Option Air filter assembly : MU01421)
Do not use the equipment with the air filter removed.
When the air filter is clogged with dust etc. the power supply is switched OFF automatically to
prevent the temperature rising inside the projector.
PJ750-2

19
CP-X380W
WARNING
For disposal of used lamp, treat according to the instruction of community authorities.
Since the lamp is made of glass, do not apply shock to it and do not scratch it.
Also, do not use old lamp.This could also cause explosion of the lamp.
Premature lamp failure MAY be caused by an electronic component in the projec-
tor and not necessarily the lamp.If unsure contact your local service centre.
If it is probable that the lamp has exploded (explosive sound is heard),
disconnect the power plug from the power outlet and ask your dealer to
replace lamp. The lamp is covered by front glass, but in rare cases, the
reflector and the inside of the projector may be damaged by scattered broken
pieces of glass, and broken pieces could cause injury when being handled.
Do not use the projector with the lamp cover removed.
HIGH VOLTAGE
HIGH TEMPERATURE
HIGH PRESSURE
Lamp
Reflector Front
glass
Lamp Life
Projector lamps have a finite life. The image will become darker, and hues will become weaker, after a lamp has
been used for a long period of time.
Replace the lamp if the LAMP indicator is red, or the CHANGE THE LAMP message appears when the projector is
switched ON.
NOTE: The LAMP indicator is also red when the lamp unit reaches high temperature. Before replacing the lamp,
switch power OFF, wait approximately 20 minutes, and switch power ON again.
If the LAMP indicator is still red, replace the lamp.
Lamp (Option Lamp: DT00431 {CP-X380W} : DT00432 {PJ750-2})
Contact your dealer before replacing the lamp.
Before replacing the lamp, switch power OFF, remove the power cord from the power outlet, and wait
approximately 45 minutes until the lamp has cooled.The lamp may explode if handled at high temperatures.
Loading the Batteries
Install the AA batteries into the remote control transmitter.
1. Remove the battery cover.
Push the knob while lifting up the battery cover.
2. Loading the batteries.
Make sure the plus and minus poles are correctly oriented.
3. Close the battery cover. 12
CAUTION
Use only the specified batteries with this remote control transmitter. Also, do not mix new and old
batteries.This could cause in battery cracking or leakage, which could result in fire or personal injury.
When loading the batteries, make sure the plus and minus terminals are correctly oriented as
indicated in the remote control transmitter. Incorrect orientation could cause battery cracking or
leakage, which could result in personal injury or pollution of the surrounding environment.
When you dispose the battery, you should obey the law in the relative area or country.
Keep the battery away from children and pets.
When not to be used for an extended period, remove the batteries from the Remote control transmitter.
NOTE: Replace the batteries when remote control transmitter operation becomes difficult.
PJ750-2

20
CP-X380W
Replacing the Lamp
1. Switch the projector OFF, remove the power cord from the power outlet,
and wait at least 45 minutes for the unit to cool.
2. Prepare a new lamp.
3. Check that the projector has cooled sufficiently, and gently turn it upside
down.
4. Loosen the two screws as shown in the diagram, and remove the lamp
cover.
5. Loosen the three screws, and gently remove the lamp while holding the
grips.Touching the inside of the lamp case may result in uneven colouring.
6. Install the new lamp and tighten the three screws firmly.
Also steadily push the opposite side of the screwed lamp into the unit.
7. Replace the lamp cover in position and tighten the two screws firmly.
8. Gently turn the projector right-side up.
CAUTION
Ensure that screws are tightened properly. Screws not
tightened fully may result in injury or accidents.
Do not use the projector with the lamp cover removed.
Resetting the Lamp Timer
Reset the lamp timer after replacing the lamp. When the lamp has been replaced after the “THE POWER WILL
TURN OFF AFTER 0 Hr”message is displayed, complete the following operation within ten minutes of switching
power ON.The power will be turned off automatically in over 10 minutes.
1. Switch power ON, and press the RESET button, for approximately three seconds. The ‘LAMP xxxx hr’message
will appear on the lamp timer on the bottom of the screen.
2. Press the MENU button on the remote control transmitter, or the RESET button on the control panel, while the
lamp timer is displayed.The ‘LAMP xxxx 0 CANCEL’message will then appear.
3. Press the and select 0, and wait until the timer display is cleared.
NOTE: Do not reset the lamp timer without replacing the lamp. Reset the lamp timer always when replacing the
lamp.The message functions will not operate properly if the lamp timer is not reset correctly.
PJ750-2