Hitachi C8XM User manual

Category
Projectors
Type
User manual

This manual is also suitable for

YK
No.0526E
CP-X880
(C8X)
CP-X885
(C8XM)
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
November 2002 Digital Media Division
SERVICE MANUAL
Be sure to read this manual before servicing. To assure safety from re, 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 replace the lamp, to avoid burns to your ngers. The lamp becomes too hot.
2. Never touch the lamp bulb with a nger 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.
6. Use the cables which are included with the projector or speci ed.
Service Warning
1. Features -----------------------------------------------2
2. Speci cations-----------------------------------------2
3. Names of each part ---------------------------------3
4. Adjustment --------------------------------------------5
5. Troubleshooting------------------------------------ 11
6. Service points -------------------------------------- 16
7. Wiring diagram ------------------------------------- 31
8. Disassembly diagram----------------------------- 37
9. Replacement parts list---------------------------- 39
10.RS-232C communication ------------------------ 40
11.Block diagram -------------------------------------- 46
12.Connector connection diagram ---------------- 47
13.Basic circuit diagram------------------------------ 48
Contents
CP-X880/CP-X885
2
1. Features
High brightness
Full connectivity (BNC)
Easy operation
My screen
Convenient lamp replacement
Liquid crystal
panel
Lamp
RGB
signal
input
Video
signal
input
Signal
output
Drive system
Panel size
Number of pixels
RGB IN
Digital input
Signal
System
System
AUDIO IN
AUDIO IN
COMPOSITE
VIDEO
RGB OUT
AUDIO OUT
S-VIDEO
COMPONENT
VIDEO
Audio signal
Power supply
Power consumption
Weight
Temperature range
Accessories
TFT active matrix
0.99 inches
1024 (H) × 768 (V)
275W 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
Type: T.M.D.S
Amplitude differential signal: DC: 150~1200mV AC: 1.56Vp-p
Amplitude signal: TTL level
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
1.0Vp-p, 75 terminator
0.3Vp-p, 75 terminator
Mini DIN 4-pin jack
200mVrms, 57k
Stereo mini jack
NTSC, NTSC4.43, PAL (BGDHI), SECAM, PAL-M, PAL-N, PAL60
200mVrms, 57k (max. 3.0Vp-p)
RCA jack ×2
1.0Vp-p, 75 terminator
RCA jack
1.0Vp-p, 75 terminator
0.7Vp-p, 75 terminator
0.7Vp-p, 75 terminator
RCA jack ×3, BNC ×3
200mVrms, 57k
1W +1W (stereo)
AC100~120V/4.7A, AC220~240V/2.0A
430W
5.7kg (12.6lbs)
Operation : 0~35°C
Storage : -20~60°C
Remote control transmitter × 1
RGB cable × 1
Video/Audio cable × 1
USB cable × 1
RS-232C adapter (15P-9P) × 1
Input
Output (Speaker)
0~200mVrms, output impedance 1k
Stereo mini jack
POWER cord × 3
Battery × 2
Carrying bag × 1
Operator's manual × 1
Safety manual × 1
1
2
1
2
Y
Y
C
L
R
CB/CR
PB/PR
525i (480i), 525p (480p), 625i (575i), 720p, 1080i/1035i
2. Specifications
CP-X880/CP-X885
3
3. Names of each part
Parts names
Air filter
Elevator button
Elevator screw
COMPONENT indicator
S-VIDEO indicator
VIDEO indicator
DVI indicator
BNC indicator
RGB indicator
INPUT dial
ZOOM
button
FOCUS button
RESET button
MENU button
ONE TOUCH button
KEYSTONE button
TEMP indicator
LAMP indicator
Lens
Remote sensor
Lens cap
Elevator feet
Remote sensor
S-VIDEO IN port
VIDEO IN port
DVI port
RGB port
BNC port
AUDIO IN R/L port
AUDIO IN 1/2 port
AUDIO OUT port
REMOTE CONTROL port
CONTROL port
WIRELESS & NETWORK
MODULE port
RGB OUT port
USB port
COMPONENT VIDEO port
Power switch
STANDBY/ON
INPUT
KEYSTONE
RESET
MENU
LANP
TENP
ONE TOUCH
RGB
BNC
DVI
VIDEO
S-VIDEO
COMPONENT
FOCUS ZOOM
Control Panel
AC power inlet
STANDBY/ON button
CP-X880/CP-X885
4
Remote control transmitter
ZOOM
buttons
Right mouse button
VIDEO button
LASER INDICATOR
RGB button
LASER button
FOCUS buttons
PAGE buttons
BLANK button
ASPECT button
ESC button
MENU button
POSITION button
MAGNIFY buttons
KEYSTONE button
REMOTE CONTROL port
Left /Right
Key buttons
Lever switch (*)
RESET button
AUTO button
PinP button
VOLUME button
MUTE button
FREEZE button
ONE TOUCH button
STANDBY/ON
VIDEO
UP
DOWN
BLANK
ASPECT
PUSH
LASER
INDICATOR
LASER
RGB
FOCUS
ENTER
ON
OFF
ESC MENU RESET
POSITION
MAGNIFY VOLUME
MUTE
WIRELESS KEYSTONE
FREEZE
ONE TOUCH
AUTO
PinP
ZOOM
PAGE
STANDBY/ON button
<For mouse control>
Mouse cursor movement
Left mouse click
<For mouse control>
Right mouse click
WIRELESS button
Disk pad
Precautions to observe when using the remote control
• Do not disassemble the remote control.
• Do not drop or otherwise expose the remote control to physical impact.
Do not get the remote control wet or place it on wet objects. Doing so may result in malfunction.
• Do not place the remote control near the projector’s lens, fan, or vents.
• Remove the batteries from the remote control and store them in a safe place if you
won't be using the remote control for an extended period.
• Replace the batteries whenever the remote control starts to malfunction.
When strong light, such as direct sunlight or light from an extremely close range (such as from an
inverter fluorescent lamp), hits the projector's remote sensor, the remote control may cease to function.
Adjust the direction of the projector to keep light from directly hitting the projector's remote sensor.
ATTENTION
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.
* Using the lever switch
Flip toward disk pad : Up ( ) key
Flip toward MENU button
: Down ( ) key
Press in center : ENTER button
12
Battery box
LASER switch
1: Enable
2: Disable
CP-X880/CP-X885
5
4. Adjustment
4-1 Before adjusting
4-1-1 Adjustment menu
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.
3. Normalizing the video adjustment.
(Press the [MENU] button of the Remote control
transmitter to display the Setup menu, then press
the [RESET] button. And select the [DEFAULT].)
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 one time. And
press the [RESET] button again for 5 seconds
or more (the Adjustment menu will appear).
4-2 Ghost adjustment
Signals for internal adjustment
30%
30%
112/255
0/255
Adjustment procedure
1.
Use DAC-P - GHOST - R: in the Adjustment menu
to adjust so that R color ghost is at a minimum.
(Press the [RESET] button, 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 color
ghost is at a minimum.
3. In the same way, use DAC-P - GHOST-B: in the
Adjustment menu to adjust so that B color ghost
is at a minimum.
4-1-2 Required adjustment
Relation between the replacement part and
required adjustment are shown in Table 4-1-2.
Tabel 4-1-2: Required adjustment
Required
adjustment
Dichroic
optics unit
LCD/LENS
prism
assembly
PWB
assembly
drive
Lamp
unit
Ghost
(Chap.4-2)
Flicker
(Chap.4-3)
NRSH
(Chap.4-4)
White balance
(Chap.4-5)
Color uniformity
(Chap.4-6)
Replaced part
: need : recommend : no need
CP-X880/CP-X885
6
4-4
NRSH adjustment
(vertical stripe adjustment)
Signals for internal adjustment
192
/255
168
/255
144
/255
120
/255
96
/255
72
/255
48
/255
24
/255
Adjustment procedure
1. Make this 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
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
color.
4. In the same way, use DAC-P - NRSH - B: in the
Adjustment menu to adjust vertical stripes of B
color.
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 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.
CP-X880/CP-X885
7
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 Adjustment
menu, press the [RESET] key and select
[DEFAULT].
Adjustment procedure
1. First, adjust the G color.
2. Select GAMMA, SUB-CONTRAST, and G: in the
Adjust menu. If the background is white solid,
press the [ENTER] key on the Remote control
transmitter to change to [G] monochrome in the
28-tone grayscale.
3. Adjust GAMMA, SUB-CONTRAST, and G: in
the Adjust menu so that brightness of 28 steps
is best.
4. Don’t adjust GAMMA, SUB-BRIGHT, and G: in
the Adjust menu. Because we want to keep the
best contrast ratio.
5. Then adjust colors R and B.
6. Select GAMMA, SUB-CONTRAST, and G: in the
Adjust menu. If the background is white solid,
press the [ENTER] key on the Remote control
trasmitter to change to [W] monochrome in the
28-tone grayscale.
7. Adjust GAMMA, SUB-BRIGHT, R: and B: in the
Adjust menu so that low-brigtness white
balance is best.
8. Adjust GAMMA, SUB-CONTRAST, R: and B: in
the Adjust menu so that middle-brightness white
balance is best.
9. Repeat steps 7 to 8 above, and adjust so that
brightness white balance of 28 steps is best.
Adjustment operations (reference)
SUB-CONTRAST operation
014 29 43 869375 100
Brightness
Input signal (%)
SUB-BRIGHT operation
014 29 43 869375 100
Brightness
Input signal (%)
CP-X880/CP-X885
8
4-6 Color uniformity adjustment
Preparations
1. Perform these adjustments after the white
balance adjustment described in Section 4-5.
2. Make a color uniformity adjustment for the
following four tones.
MIN tone (approx. 7% input signal)
MID-L tone (approx. 18% 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 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 color 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 “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
[ENTER] key on the Remote control transmitter
to select the following two signals.
Solid monochrome adjustment color (use G
color adjustment when a color differential
meter is used).
Solid white (use for adjustment other than above).
8. Reset color-shading correction before adjustment.
When 4 tones and all colors 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.
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
VID-AD
ON
DAC-P
GAMMA
C. UNIF.
No. 1 R 0
LEVEL
BLACK
MIN
MID-L
MID-H
MAXSTRIPE
OFF
G 0 B 0
Major adjustment lattice point No.
Adjust menu
Adjust Tone menu
CP-X880/CP-X885
9
Adjustment procedure 1
(when a color 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 color 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 color and color difference
meter is used, the [ ](delta) mode is
convenient. When adjustment point [No.1]
color 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 color coordinates 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 ± 0.050
9. Similarly, measure adjustment points [No.3] to
[No.17] and adjust their color 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 three times as much as [MID-L] tone [G].
This completes [G] color 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 color coordinates of adjustment
point [No.1] and make a note of them.
Assume that they are x = x1, y = y1.
13.
Now measure the color coordinates 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 color 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.
Don't adjust [MAX] tone [G].
Adjust [MAX] tone [R], [B] only.
CP-X880/CP-X885
10
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] color intensity only of the color
point whose [G] color is more intense than
measurement point [No.1].
4. View measurement point [No.10] and [No.11].
Lower the [G] color intensity only of the color
point whose [G] color is more intense than
measurement point [No.1], and raise the
intensity of the point whose color intensity is
lower than measurement point [No.1].
5. Now adjust the [MIN] tone for colors [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 color 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 color 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.
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
7
5
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
113 11210 1
1614 12
86 4 84
1614 12
3 112
14
15
10 1
5
7
15 13
17
9
15 13
7
5
3
17
9
11
6
17
9
6
13
7
5
14 12
10
46
2
8
16
3 11210 1
1614 12
86 4 84
1614 12
3 112
14
15
10
5
7
15
10 12
1315
5
7
12
4
1
8
1713
1 3 11
16
95
17
9
15 13
7
5
3
17
9
11
6
17
9
6
13
7
5
14 12
10
46
2
8
16
3 112 1
1614 12
84 84
1614 12
32
14
15
10
5
7
15
10 12
13
5
7
12
4
1
17
13
1 3
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
CP-X880/CP-X885
11
5. Troubleshooting
Check points at trouble shooting
E808
E807
EE51(Parts side)
ESPR
E804
E811
E800
E805
E809
E302
ESPL
E806
E803
E802
E801
EG03
(Parts side)
ES02
EL4332CS
(IS01)
EW01
(Parts side)
E101
(Parts side)
E812
(Parts side)
EV01
(Parts side)
11 20
10 1
1
3
2
P501 P701
P601
TP98
TP99
TPX29
TPX26
TPX23
TPX20
CHV29
CHV28
CHV34
CHV27
CHV35
CHV36
CHV22 CHV23
TPX19
I104
AP99(Parts side)
AP98(Parts side)
S315(IN)
S314(OUT)
CHV26
CHV33
I256
Q801 C
TH950
PWB assembly Drive
PWB assembly Signal
PWB assembly Senso
r
CPC30 low connector
CP-X880/CP-X885
12
Power can not be turned on
Are voltage
input on the PWB
assembly Drive at
standby mode?
: +16.5V
: +15V
: +4V
: +6V
E800
E800
E800
E800
Power unit (circuit)
Fuse
on Power unit (circuit)
NO
YES
Disconnect
TSW from Power unit
(circuit). And check
TSW short or
open?
PWB assembly Drive
Lamp
or
Power unit (ballast)
Short
TSW
Open
Lights
What is the state of
LAMP indicator
D302?
Not light
Blinks
1
4
6
12
Is the LAMP
connection?
OK
Set the LAMP again
Is the
voltage at pin and
of E807 same?
NO
YES
PWB assembly Limit SW
PWB assembly Drive
Is the LAMP COVER
set?
OK
Set the LAMP COVER
NG
NG
1 2
CP-X880/CP-X885
13
Lamp does not light
What is the state of
LAMP indicator D302
during operation?
Power unit (ballast)
Lamp
PWB assembly Drive
Power unit (ballast)
Light Light
PWB assembly Drive
YES
Not light
NO
YES
Change the lamp.
Does lamp light?
Power unit (circuit)
Not light
NO
What is the state of
TEMP indicator
D301?
Not light
Blinks
PWB assembly Drive
FAN
Connect
E302
(for PWB
assembly Sensor)
NO
"L" = 0V
L (0V)
INTAKE B : E801
INTAKE G : E802
INTAKE R : E803
EXHAUST : E804
EXHAUST(POWER) : E809
LAMP : E808
YES
Is the
voltage at collector
of Q801 on the PWB assembly
Drive fixed to "L" during
warming-up?
"L" = 0V
Is E302
(PWB assembly Sensor)
surely connected with
PWB assembly Drive
by the cable?
DC FAN
Measure the voltage
at each pin
Set AC to ON and
enter standby status
The voltage is
H (3.3V)
H (3.3V)
H (3.3V)
Measure
sure voltage at
the of I256 on the
PWB assembly
Drive.
Turn on the
power supply and check
the voltage
Check the fan connector
connection
Connector connection
Normal
PWB assembly
Sensor
Infinity
OK
NG
about 4.7k
Measure
the resistance of
TH950 on the PWB
assembly Sensor at
disconnecting
E302.
Is the voltage
at pin of E805 on
the PWB assembly Drive
set to "L" during
warming-up?
3
2
1
1
1
1
1
1
The voltage
once
(about 1 sec.)
to L (0V)
DC fan malfunction
OK
H
H
NG
AC ON Power ON
about 1 sec.
CP-X880/CP-X885
14
Picture is not displayed when
the RGB signal is input
Are signal
input at each pin on the
PWB assembly
Drive?
PWB assembly Signal
IC (IS01)
EL4332CS
PWB assembly Drive
LCD panel
NO
YES
Check at operating mode
TPX29 : R signal
TPX26 : G signal
TPX23 : B signal
TPX20 : H sync
TPX19 : V sync
Power unit
(circuit)
Change the
IS01 on the PWB
assembly Signal is it
repaired?
YES
NO
NO
YES
Are voltage input
at each pin on the PWB
assembly Drive?
: +16.5V
: +15V
: +4V
: +6V
E800
E800
E800
E800
1
4
6
12
Power unit (circuit)
NO
YES
Are voltage
input at each pin on
the PWB assembly
Drive?
PWB assembly Drive LCD module assembly
Are signal
input at these
pins of EV01 on the
PWB assembly
Drive?
Measure
the voltage at pin
of I104 on the PWB
assembly
Drive.
NO
YES
0V
5V
PWB assembly Drive
PWB assembly Signal
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
3
: +16.5V
: +15V
: +4V
: +6V
E800
E800
E800
E800
1
4
6
12
CP-X880/CP-X885
15
PWB assembly Drive Speaker
Check at operating mode
No sound
NO
YES
PWB assembly Signal
Are signal input
at each pin on the PWB
assembly Drive?
CHV26 : Audio (L)
CHV33 : Audio (R)
Are the
signals input at each
pin of EV01 on the PWB
assembly
Drive?
PWB assembly Signal
YES
PWB assembly Drive
NO
CHV22: RX
CHV23: TX
Pin No RS-232C
1
2
3
6
7
9
10
12
13
14
SEL0
RTS
GND
RDP
TDP
Check at operating mode
Can not control to RS-232C
CP-X880/CP-X885
16
6. Service points
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.
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).
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˚C±30˚C
Mounting (chips) on empty PCB 380˚C±30˚C
Chassis, metallic shield, etc. 420˚C±30˚C
PWB assembly DRIVE
PWB assembly SIGNAL
PWB assembly REMOTE CONTROL
PWB assembly LIMIT SWITCH
PWB assembly SENSOR
The PWB assembly which has used lead free solder
CP-X880/CP-X885
17
When cleaning the optical system with the PWB assembly Drive connected
More efficient operation is possible if the optional JOINT PWB (JP056511) is used because the cable can
then be extended.
Cautions
There is no front remote control PWB extension; therefore, the remote control cannot be used during
operation unless Remote Control Photoreceptor only rear is selected from the Menu beforehand.
The lamp door switch is turned off when the upper case is removed; therefore, it is necessary to turn on the
lamp door switch by using a thin object to continuously press where indicated by "A" in the illustration.
E808
E807
E804
E811
E800
E805
E809
E302
E803
E802
E801
PWB assembly Drive
Motor lead
#6606
CNTH
#3054
CNBAR
CNPW1
CNPW2
Drive board
#6607
#6606
CNRM
A83
#680
CNLC
A84
#3055
A
PWB assembly Drive connector name PWB assembly Drive connection cable name
No.
PWB assembly Drive
connection cable name
JOINT PWB type
and connector
PWB assembly Drive
connector name
Signal content
CNPW1 12P PH (JA04721-G) E72 E800 Power supply secondary
CNPW2 3P PH (JA04721-B) E22 E811 Power supply secondary
CNBAR 4P PH (JA04721-C) E32 E805 Ballast power supply control
#3054 3P PH (JA04721-B) E22 E809 Power supply air intake fan
CNTH 2P DF13 (JA04721-D) E42 E302
Air intake temperature sensor
#3055 3P ZH (JA04721-E) E52 E804 Exhaust fan
CNLC 2P DF13 (JA04721-D) E42 E807 Lamp door switch
#680 4P ZH (JA04721-F) E62 E808 Lamp fan
#6606 3P ZH (JA04721-E) E52 E803 Red (R) panel fan
#6606 3P ZH (JA04721-E) E52 E801 Blue (B) panel fan
#6607 4P ZH (JA04721-F) E62 E802 Green (G) panel fan
Operational Method
CP-X880/CP-X885
18
The fan cooling
sirocco fan is easily
damaged; therefore,
use care to avoid
applying any impact
after removing the
optical unit.
Remove the optical unit before
removing the power supply
PWB block.
When removing the optical unit, move
it in the direction of the arrow so that
the protuberance of the optical unit
fan does not become caught in the
indentation in the bottom case.
Use care to avoid applying any stress
to the optical unit.
Bottom case indentation
Fan protuberance
CP-X880/CP-X885
19
Do not disassemble the unit
because replacement of separate
parts is not possible.
DISTRIBUTOR HITACHI
Replacement of G Panel Reconditioning
Return
Before Replacing the LCD / Lens Prism
You should not replace separately the parts of the liquid crystal LCD / Lens Prism because it works properly
only when used together. Therefore, regarding these parts, you can either replace part, LCD / Lens Prism
assembly, or send the whole unit LCD / Lens Prism assembly back to HITACHI, where we will replace the
malfunctioning part, recondition the device and send it back to you. In that case please contact our distributor.
Putting batteries into the remote control unit
1
Remove the battery cover
Slide back and remove the battery cover in the direction of the
arrow.
Insert the batteries
Align and insert the two AA batteries (that came with the
projector) according to their plus and minus terminals (as
indicated in the remote control).
Close the battery cover
Replace the battery cover in the direction of the arrow and
snap it back into place.
2
3
CAUTION
Precautions to observe in regards to the batteries
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 specified 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.
G Panel
CP-X880/CP-X885
20
Lamp (Option Lamp:DT00531)
HIGH VOLTAGE
HIGH TEMPERATURE
HIGH PRESSURE
To replace the lamp, check the model number of the replacement lamp (sold separately)
.
Replacement lamp model number: DT00531
Before replacing the lamp, make sure the power switch is off and the power cable is not plugged in,
then wait at least 45 minutes for the lamp to cool sufficiently. Handling the lamp while hot can cause
burns, as well as damaging the lamp.
The LCD projector uses a glass lamp bulb. It is a mercury lamp with high
internal pressure. High-pressure mercury lamps can break with a loud
bang, or burn out, if jolted or scratched, or through wear over time. Each lamp has a
different lifetime, and some may burst or burn out soon after you start using them. In
addition, when the bulb bursts, it is possible for shards of glass to fly into the lamp housing,
and for gas containing mercury to escape from the projector’s vent holes.
Do not open the lamp cover while the projector is suspended from above. This is
dangerous, since if the lamp’s bulb has broken, the shards will fall out when the cover is
opened.
Handle with care: jolting or scratching could cause the lamp bulb to burst during use.
If the replace lamp indicator (see "Related Messages" and "Regarding the
indicator Lamps") comes on, replace the lamp as soon as possible. Using the
lamp for long periods of time, or past the replacement date, could cause it to burst. Do
not use old (used) lamps; this is a cause of breakage.
If the lamp breaks soon after the first time it is used, it is possible that there are electrical problems
elsewhere besides the lamp.
If the lamp should break (it will make a loud bang when it does), ventilate the room well, and make
sure not to breathe the gas that comes out of the projector vents, or get it in your eyes or mouth.
Obey local ordinances when disposing of used lamps. In most cases, it is possible to dispose of used
bulbs in the same manner as used glass bottles, but in some cases, bulbs are sorted separately.
• Do not use the projector with the lamp cover removed.
WARNING
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Hitachi C8XM User manual

Category
Projectors
Type
User manual
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