Hitachi PJL1035 2 User 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 liquid crystal projector. Be sure to read cautionary
items described in the manual to maintain safety before servicing.
1. Features 2
2. Specifications 2
3. Names of each part 3
4. Adjustment 8
5. Troubleshooting 13
6. Service points 21
7. Dust cleaning 25
8. Block diagram 26
9. Wiring diagram 27
10.Basic circuit diagram 29
11.Connector connection diagram47
12.Disassembly diagram48
13.Replacement parts list 50
Contents
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 turning on the projector.
4. Do not touch the exhaust fan, during operation.
5.The LCD module ass'y is likely to be damaged. If replacing the LCD module ass'y, do not hold the FPC of
the LCD module ass'y.
Service Warning
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Liquid Crystal Projector
February 2000
SM0503
PJL1035 2
SERVICE MANUAL CPX940WB
CPX940E

– 2 –
1. Features
High brightness, High resolution
Compact size, light weight for portability
RGB output terminal
RS232C Communication
Mouse emulation
Complies with VESA DDC1/2B specifications
Auto-adjustment function
2. Specifications
Liquid crystal
panel
Drive system TFT active matrix
Number of pixels 1024 (H) x 768 (V)
Lamp UHP lamp 150W
Video input
System NTSC , 4.43NTSC , PAL , M-PAL , or SECAM (N-PAL : only compulsion mode)
Level
Composite 1.0Vp-p (75Ωtermination)
Y/C Y : 1.0Vp-p (75Ωtermination)
C : 0.286Vp-p (NTSC burst signal, 75Ωtermination)
0.3Vp-p (PAL/SECAM burst signal, 75Ωtermination)
RGB input /
output
Video signal Analog RGB input
0.7Vp-p (75Ωtermination)
Sync signal H/V separate
TTL level
Audio Input 200mVrms, 20kΩor less
Output 0~200mVrms, 1kΩ
Speaker output 1W + 1W (stereo)
Power supply AC100~120V/2.9A,AC220~240V/1.3A (50/60Hz)
Power consumption 260W
Dimensions 248 (W) x 106 (H) x 336 (D) mm
Weight 4.5kg
Temperature range Operation : 0~35˚C
Storage : -20~60˚C
Accessories
Panel size 0.9 inches
Remote control 1 Video/Audio cable 1
POWER cord 3 Mouse cable 3
BATTERIES LR6 2 S-cable 1
RGB cable 1 Stereo mini cable 1
Mac adapter 1

– 3 –
3.Names of Each Part
Main Unit
Lens
Speaker
Speaker
Remote control
sensor
• Use the remote control transmitter within the range of
about 16 feet from the remote control sensor and within
30° to both the left and right.
Cooling fan
(exhaust)
Handle
STANDBY / ON button
Power ON/OFF button.
OFF sets the unit in standby mode.
LAMP indicator
This lights or blinks when the lamp does
not light.
TEMP indicator
This blinks when fan is abnormal.
INPUT button
To select the input source.
Each time this button is pressed, the input
source is changed in sequence as shown
below.
ZOOM knob
Adjusts picture size.
FOCUS ring
Adjusts focus.
MENU button
Picture adjustments.
RESET button
Resets unit to factory settings.
Lens cap
MUTE button
Silences the sound. (Cancels the mute
when the unit is set in mute mode.)
RGB1 RGB2 VIDEO
ON indicator
This blinks in the standby mode and lights
in the operation mode.
RESET
MENU
MUTE
INPUT
LAMP
TEMP
STANDBY/ON

– 4 –
RGB input terminal
D-sub 15pin shrink terminal (1/2)
VIDEO input terminal
(on video-equipped models only)
S-VIDEO input terminal
Mini DIN 4pin connector
VIDEO input terminal
RCA Jack
AUDIO L/R input terminal
RCA Jack
AC IN socket
Connect the provided power cord.
MAIN POWER switch
Main power ON/OFF switch.
: OFF
: ON
RGB output terminal
D-sub 15pin shrink terminal
RGB output can be displayed
even in the standby mode.
CONTROL terminal
D-sub 15pin shrink terminal
AUDIO input terminal
Stereo mini jack (1/2)
AUDIO output terminal
(RGB/VIDEO)
Stereo mini jack
Remote control sensor
S-VIDEO IN
RGB IN
CONTROL
AUDIO
OUT
AUDIO IN
12
RGB OUT
12
VIDEO IN
AUDIO IN
L
R
MONO

– 5 –
Remote Control Transmitter
•The laser pointer on the remote control unit radiates the laser beam from the laser aperture.
•This laser pointer used as a stick (for indication).
∑Do not stare directly into the laser aperture or radiate the laser beam to other persons as the laser emitted
is a class 2 laser and it could damage you vision , etc.
Especially pay attention if children are present.
•The three labels below are caution labels for the laser beam.
LASER APERTURE
CAUTION
LASER RADIATION -
DO NOT STARE INTO BEAM
WAVE LEGTH : 670nm
MAX. OUTPUT : 1mW
CLASS 2 LASER PRODUCT
RADIAZIONI LASER
NON GUARDARE NEL RAGGIO LUCE
APPARECCHIO LASER DI CLASS 2
RAYONNEMENT LASER MANUFACTURED
NE PAS REGARDER DANS
LE FAISCEAU APPAREIL August-97
A LASER DE CLASSE 2
LASER-STRAHLUNG
NICHT IN DEN STRAHL
BLICKEN LASAER KLASSE 2 MANUFACTURER
AVOID EXPOSURE-LASER
RADIATION IS EMITTED
FROM THIS APERTURE
Caution Cautions on use of the laser pointer.
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
WAVE LENGTH : 670nm
MAX. OUTPUT : 1mW
IEC60825-1 : 1993 + A1 :1997
MUTE button
Silences the sound. (Cancels the mute when
the unit is set in mute mode.)
VOLUME button
Adjusts volume. The sound is loud or low
while pressing the "+" or "-" button.
LASER button
Laser pointer ON button. Use as a stick (for
indication).
MOUSE LEFT button
Mouse left button is the left click of the
mouse. (bottom button)
RESET / RIGHT button
When displays the on-screen menus, resets
the menu item to factory settings.
When operates the mouse emulation, works
as right click of mouse in computer mode.
After moving the picture (POSITION ON),
resets the position to factory settings.
MOUSE ON button
Mouse emulation mode starts.
When menu are open or blank screen is
displayed or icon of position is displayed,
there are stopped and back light off.
TIMER ON / OFF button
Displays the setting time by count down.
STANDBY / ON button
Power ON/OFF button.
OFF sets the unit in standby mode.
FREEZE Button
Pressing this button displays a still picture
(by freezing).
MAGNIFY button
Pressing this button partially magnifies a
displayed picture.
POSITION button
Moves the picture by DISK PAD after
pressed the POSITION ON button.
(Only RGB signal input)
While the back light on, you can operate
POSITION.
DISK PAD
When the back light of MENU ON button
on, selects or adjusts the menu item.
When removes the on-screen menus,
works as mouse.
When the back light of the POSITION ON
button on, moves picture.
MENU ON button
Displays the on-screen menus.
And back light on.
While the back light on, you can operate
MENU.
BLANK ON button
The blank screen which is displayed by
pressing BLANK.
And the blank screen will be revealed
down by pressing BLANK again.
INPUT SELECT button
Selects the input source.
2
1
3
2
1
STANDBY/ON MUTE
POSITION ON
OFF
FREEZE
LASER
RESET
MOUSE ON
BLANK TIMER
RGB VIDEO
INPUT
MENU ON
RIGHT
VOLUME
MAGNIFY

– 6 –
Function for Service
When replacing the lamp, Reset the operating time of lamp.
Reset the lamp timer :
If you have replaced the lamp after the lamp replacement time had expired, perform the procedure explained below within 10
minutes after the power is turned on. The power will turn off automatically when the 10-minute period expires.
1) Press the RESET button on projector for 3 seconds or remote
control TIMER button for 3 seconds and display the total lamp used
time.
•When accumulated operation time of the lamp reaches 1700
hours (after the second time : 2000 hours), the following display
will appear at the bottom of the screen.
2) Press the RESET button on projector or remote control MENU ON
button during displaying the lamp used time.
3) Select the “0” on the screen using the MENU ( ) button or DISK
PAD.DISK PAD.
LAMP 1500 hr
LAMP 1500 0 CANCEL
Function Operation
Displayed the operating time of the lamp Press the RESET button of the projector or the TIMER
button of the remote control, for 3 seconds.
Reset the operating time of the lamp Press the RESET button of the projector or the remote control MENU.
(During be displayed the operating time of the lamp.)
Displayed the operating time of the projector Press the MUTE button of the projector or the remote control, for 3 seconds.
(During be displayed the operating time of the lamp.)
STANDBY/ON MUTE
POSITION ON
OFF
FREEZE
LASER
RESET
MOUSE ON
BLANK TIMER
RGB VIDEO
INPUT
MENU ON
RIGHT
VOLUME
MAGNIFY
123
RESET
MENU
3
1, 2

– 7 –
Message Table
On-screen display
The following messages are displayed on the screen.
MESSAGE Action
CHANGE THE LAMP
AFTER REPLACING LAMP,
RESET THE LAMP TIMER.
THE POWER WILL TURN
OFF AFTER * Hr.
The total lamp service time will exceed the lamp replacement time in * hours.
The lamp will go off automatically when the lamp replacement time is exceeded.
Replace with a new lamp before that. *1
The asterisk (*) indicates the number of hours remaining before the lamp goes
off automatically.
Blinking of
CHANGE THE LAMP
The total lamp service time has exceeded the lamp replacement time. The lamp
will go off automatically about 10 minutes after it starts blinking. Replace with a
new lamp.*2
NO INPUT IS DETECTED Signal is hot input.
SYNC IS OUT OF RANGE The horizontal frequency of the input signal exceeds the range of the projector, it
cannot be displayed.
Indicator display
The ON indicator, LAMP indicator and TEMP indicator will light or blink in the following cases.
CHANGE THE LAMP
AFTER REPLACING LAMP,
RESET THE LAMP TIMER.
The lamp has been in service for long. Replacement with a new lamp is
recommended. The lamp will go off automatically when the lamp replacement
time is exceeded. *1
*1 This message are not displayed after 3 minutes.
But this message are displayed when you turn on the power again.
*2 It is possible to again turn on the power, however the power will go off after about 10 minutes.
ON indicator LAMP indicator TEMP indicator Meaning Remedy
Lights orange Goes off Goes off Standby mode
Blinks green Goes off Goes off During warming up
Lights green Goes off Goes off During operation *1
Blinks orange Goes off Goes off During cooling down
Lights red Lights red Goes off Lamp cannot light *2 Cool projector by power off for 45
minutes.
If the indicator is still it, lamp may be
defective. Replace.
Lights red Blinks red Goes off Lamp is not inserted or the
lamp door open Securely insert the lamp or close the lamp door.
Lights red Goes off Blinks red Cooling fan accidented Replace fan.
Blinks red Blinks red Goes off The total lamp service time has exceeded the lamp
replacement time. Replace lamp and reset the
accumulated lamp operation time.

– 8 –
4. Adjustment
4 - 1 Before adjusting.
4-1-1 ADJUSTMENT menu.
The ADJUSTMENT menu is needed at all adjust-
ments.
How to set up ADJUSTMENT menu follow these;
a.Push the MENU button.
b.Keep the RESET button pushing for a several
seconds while the PICTURE menu is displayed.
Note: All parameters used in these adjustment are
printed in boldface as shown in Fig.4-2-a and
Fig.4-2-b.
ADJUSTMENT
menu
PICTURE
menu
4-1-3 Setting of condition before adjustment.
1. Apply heat-running for 10 minutes or more before
adjustment.
2. Project 40 inches size image with zoom set to the
widest.
3. Press the RESET button on the remote controller to
set picture adjustment to NORMAL.
4. Use a darkroom whose luminance is less than 2[lx].
VIDEO GAMMA DAC_P S/H
AIR-FLOW
SUB-BRIGHT
SUB-CONTRAST
WHITE-POSI
BLACK2-POSI
V. COM
C.UNIFORMITY
Fig.4-2-a Parameters in the DAC_P of
the ADJUSTMENT menu.
Fig.4-1 ADJUSTMENT menu
VIDEO GAMMA DAC_P S/H
S/H TIMING
GHOST
SUB H POSI
REFRESH
Fig.4-2-b Parameters in the S/H of the
ADJUSTMENT menu.
4-1-2 Selection of adjustment.
When any parts in the table 4-1 is changed, choose
the profer adjusting items with the chart. Keep the
adjusting order, from upper to lower in it. For example,
adjust "White balance" firstly and "Ghost" next at
replacement of the PWB ass'y color.
Replaced part
Adjustment
P.O.filter
(Chap.4-2) White balance (Chap.4-3) Ghost (Chap.4-4)
Dichroic optics unit Yes No No
LCD/LENS prism ass'y Yes Yes Yes
PWB ass'y drive No Yes Yes
PWB ass'y color No Yes No
"Yes" means need for adjustment, "No" means no need for adjustment.
Table 4-1 : Relation between the replaced part and adjustment.

– 9 –
PJL1035-2
4 - 2 P.O.filter adjustment.
Before adjusting, input the 0.0Vp-p signal to check the
black image. If the image is not as dark as other set,
continue this procedure.
1. Make sure the AC power cord is unplugged.
2. Remove the PWB ass'y DRIVE and the DUST
COVER.
3. Loosen the screws on P.O.filters for GREEN and
RED. (See Fig.4-3-(a).)
Remark: Don't touch the screw on the P.O.filter for
BLUE.
4. Put back the PWB ass'y DRIVE where it belongs
without screws and make connections with
peripheral devices. Then get on the projector.
5. Use the XGA VESA(60) timing signal to Input
0.0Vpp black pattern.
6. Slide the P.O.filter for GREEN on its base to find
out where a whole image is darkest by visual
check. At the best position, tighten the screw a little
so that the filter cannot shift. (See Fig.4-3-(b).)
7. Slide the P.O.filter for RED on its base in order to
get rid of the reddish tint of the image by visual
check. After finding out the best position, tighten
the screw in a little order not to change the color of
the image. (See Fig.4-3-(b).)
8. Remove the PWB ass'y DRIVE again to tighten up
the screws of both P.O.filters.
9. Put on the DUST COVER and the PWB ass'y
DRIVE and make original connections with all of
peripheral parts.
10. Reinstall the UPPER CASE and tighten all
screws.
LCD panels PROJECTION LENS
Don't touch
this screw.
a screw on
P.O.filter-B
a screw on
P.O.filter-G
P.O.filter-B
P.O.filter-B
PWB ass'y DRIVE
Screw driver
Screw Screw
P801 P701
P901
Fig.4-3-(a) Top view of P.O.filters Fig.4-3-(b) How to tighten screws
Caution: Avoid damaging LCD
panels or their cables.

– 10 –
4-3-2 Adjustment of color uniformity
1. Input gray pattern at 0.35Vp-p with a timing signal
of XGA VESA(60).
2. Set C.UNIFORMITY - SWITCH in the adjustment
menu to OFF.
3. Check the color unevenness of the original image.
4. Continue this adjustment unless color uniformity is
good.
5. Set C.UNIFORMITY - SWITCH in the adjustment
menu to ON.
6. Adjust following parameters to make better color
balance with same input signal.
a.Adjust "C. UNIFORMITY - H - R -RP" so that color
balance of left and right side is best by visual
check.
This is control correction wave for Horizontal Saw.
b.Adjust "C. UNIFORMITY - H - R -PB" so that color
balance of center and side is best by visual check.
This is control correction wave for Horizontal
Parabola.
c. Adjust "C. UNIFORMITY - H - B -RP" so that color
balance of left and right side is best by visual
check.
This is control correction wave for Horizontal Saw.
d.Adjust "C. UNIFORMITY - H - B -PB" so that color
balance of center and side is best by visual check.
This is control correction wave for Horizontal
Parabola.
e.Adjust "C. UNIFORMITY - V - B -RP" so that color
balance of top and bottom is best by visual check.
This is control correction wave for Vertical Saw.
"C. UNIFORMITY - H - R -RP"
: horizontal correction for R horizontal Saw
"C. UNIFORMITY - H - R -PB"
: horizontal correction for R horizontal Parabola
"C. UNIFORMITY - H - B -RP"
: horizontal correction for B horizontal Saw
"C. UNIFORMITY - H - B -PR"
: horizontal correction for B horizontal Parabola
"C. UNIFORMITY - V - B -RP"
: vertical correction for B vertical Saw.
4 - 3 White balance adjustment
Preparations for adjustment
4-3-1 Flicker adjustment.
Refer to the attached drawing (Fig.4-4).
1. Use the XGA VESA(60) timing signal to input a
0.35Vp-p R primary color signal for every other line.
2. Use DAC_P - V.COM - R in the adjustment menu to
adjust until flicker is minimum on a whole image.
3. Use the XGA VESA(60) timing signal to input a
0.35Vp-p G primary color signal for every other line.
4. Use DAC_P - V.COM - G in the adjustment menu
to adjust until flicker is minimum on a whole image.
5. Use the XGA VESA(60) timing signal to input a
0.35Vp-p B primary color signal for every other line.
6. Use DAC_P - V.COM - B in the adjustment menu to
adjust until flicker is minimum on a whole image.
Adjust it so that flicker is the lest.
R or G or B
Black
Fig.4-4 Test pattern for the flicker adjustment.

– 11 –
+1
-0
4-3-3 The luminance adjustment.
Use Minolta CL-100 at measurement and adjustment.
1. Maximize CONTRAST and BRIGHT in the picture
menu.
2. Use the XGA VESA(60) timing signal to input a
0.7Vpp green primary signal and measure the
luminance at the center of the image. Suppose the
reading is “A”.
3. Normalize CONTRAST and BRIGHT in the picture
menu.
4. Use the XGA VESA(60) timing signal to input a
0.21Vpp green primary signal. Adjust the luminance
with SUB-BRIGHT - W to
Ax0.09 10 [lx].
5. Use the XGA VESA(60) timing signal to input a
0.7Vpp green primary signal. Adjust the luminance
with SUB-CONTRAST - W to
Ax0.95 20 [lx].
6. Return to procedure 4 to check the luminance is
within the specification. If it is out of the
specification, repeat the procedure 4 - 5.
7. Use the XGA VESA(60) timing signal to input a
0.0Vp-p black pattern. Adjust the luminance with
DAC_P - BLACK2-POSI - W to
Ax0.009 [lx].
8. Use the XGA VESA(60) timing signal to input
0.7Vpp 16 step gray scale signal. See the two
darkest steps if they can be distinguished. Use
DAC_P - BLACD2-POSI - G in order to make a
little different luminance between 1st step and 2nd
step by visual check. (See Fig.4-5.)
1st step 2nd step
Fig.4-5 16 step gray scale

– 12 –
4-3-4. Adjustment of the white balance.
Use Minolta CL-100 at measurement and adjustment.
1. Low brightness white balance.
a.Input gray pattern at 0.21Vp-p with a timing signal
of XGA VESA(60).
b.Adjust DAC_P - SUB BRIGHT - R and DAC_P -
SUB BRIGHT - B so that the chromaticity at the
center of the picture is
x=0.28 0.005,y=0.34 0.005(low-brightness
white balance)
2. Medium brightness white balance.
a.Input gray pattern at 0.52Vpp with a timing signal
of XGA VESA(60).
b.Adjust DAC_P - SUB CONTRAST - R and DAC_P
- SUB CONTRAST - B so that the chromaticity at
the center of the picture is
x=0.28 0.005,y=0.345 0.005(middle-brightness
white balance)
3. Return to 1 to check low-brightness white balance,
and repeat 1 to 2 until both middle-brightness and
low-brightness white balance are adjusted within
their target at the same time.
4. Black white balance.
a.Input gray pattern at 0.07Vpp with a timing signal
of XGA VESA(60).
b.Adjust DAC_P - BLACK POSI - R and DAC_P -
BLACK POSI - B so that the chromaticity at the
center of the picture is
x=0.27 0.005,y=0.34 0.005.
5. Compare the brightness between the darkest
stepsand the 2nd darkest one visually. Unless the
difference is visible, go to the procedure a - d below.
a.Input a 0.7Vpp 16 steps primary blue signal with a
timing signal of XGA VESA(60).
b.Adjust DAC_P - BLACK2 POSI - B so that the
brightness between 1st and 2nd step is different
slightly. (See Fig. 4-5.)
c. Input a 0.7Vpp 16 steps primary red signal with a
timing signal of XGA VESA(60).
d.Adjust DAC_P - BLACK2 POSI - R so that the
brightness between 1st and 2nd step is different
slightly. (See Fig. 4-5.)
6. Repeat the procedure 1 to 4 so that the low-
brightness white balance, the medium-brightness
white balance and the black white balance are
within their targets at the same time.
Remark; You don't need to take care of the target
of the black white balance, when it has
been adjusted visually in the procedure 5.
4 - 4 Ghost adjustment
Preparations for adjustment
1. Input a 0.7Vpp cross-hatch pattern with a timing
signal of XGA VESA(60).
2. Adjust "H.PHASE" in the picture menu so that the
vertical lines of cross-hatch pattern are seen
clearest.
Adjustment procedure
1. Position the cursor on S/H - GHOST in the
ADJUSTMENT menu and push the RESET button
to initialize this parameter.
2. Decrease the value of the S/H - GHOST in the
ADJUSTMENT menu until the ghost image
appears. Suppose this figure "B". (See the example
below.)
3. Set the parameter to "B + 2".
Example:
Adjusted value Image
6 No ghost
5 Faint ghost B=5
4 Ghost
In this case, S/H - GHOST is set to 7 (=5+2).

– 13 –
5. Troubleshooting Check points at trouble shooting
PWB ass'y input
terminal video EVS1
PANEL
TERMINAL
SPEAKER
(R)
SPEAKER
(L)
I211 IS02
ETEP
LED
I201
1
1
1
50
1
52
14
1
1
32
32
32
1
ELCO
EBLF
EBAF
P701
EDS1
P801
I510
P901
EDI1
EBOF EBAR
R244
< TOP VIEW >
without upper case
< SIDE VIEW >
without upper case & I/O DECO PANEL

– 14 –
Power can not be turned on
Are
voltage input at
pins , , of EDS1
on the PWB ass'y drive
at standby
mode?
+12.5V
+6.6V
+16.5V
Power unit (circuit) AC inlet Power switch FUSE
Power unit (ballast)
NO
YES
Is
voltage
at R244 on the
PWB ass'y signal at
standby
mode?
= H (H = 2.5V)
Disconnect
ETEP for sensor from
PWB ass'y drive. And
retry turn on?
sensor
OK
= L
PWB ass'y drive
NO
1
1
4
6
12
12
46

– 15 –
Lamp does not light
What is the state of
LAMP indicator?
Lamp
Power unit (ballast)
Power unit (ballast)
Light
Not light Change the lamp.
Does Lamp light? YES
NO
What is the state of
TEMP indicator?
Not light
Blinks
NG
Retry
after shorting
between pin and of
EBOF on the PWB
ass'y drive.
PWB ass'y drive
OK
OK
DC FAN (EXHAUSTION)
DC FAN (INTAKE)
OK
DC FAN (LAMP)
Blinks
Is the Lamp
connection?
OK
Shorts
between and
of ELCO on the PWB
ass'y drive. And
check again
Set the Lamp again NG
NG
MICRO SWITCH
for LAMP
OK
Is voltage
supplied at pin of
EDS1 on the PWB
ass'y drive?
NG
Power unit (circuit)
PWB ass'y drive OK
Is the Lamp cover
set correctly?
YES
Set the Lamp cover NO
MICRO SWITCH
for LAMP DOOR
NG
NG
Check after trying to get on the projector
12.5V
Short
between and
of EBAF on the PWB
ass'y drive, and
retry.
Is the
voltage at pin
of EBAR on the PWB
ass'y drive fixed at either "H"
or "L" during
warming up?
PWB ass'y drive
YES
Retry
after shorting
between pin and of
EBLF on the PWB
ass'y drive.
1
1
1
3
1
1
3
3
13
1

– 16 –
No picture is displayed although
there is the RGB signal input.
Is
picture
displayed either
selected RGB1 or
RGB2 ?
Are signal
input at each pin of
EDI1 on the PWB
ass’y drive?
PWB ass’y input terminal RGB
PWB ass’y drive
PWB ass’y signal PWB ass’y input
terminal RGB Power unit (circuit)
NO
YES
YES
NO
Is the
voltage at pin
of EDI1 on the PWB
ass’y drive set to "H" when
RGB1or 2 is
selected?
NO
YES
Is
the 1/2
selected signal
changed at pin of I211
on the PWB ass’y
drive
NO
YES
"L"=RGB1, "H"=RGB2
("H"=5V)
PWB ass’y drive
Check at operating mode
to : R signal
to : G signal
to : B signal
: H sync
: V sync
"H" = 5V
2
7
12
4
9
14
21
22
33
3
10

– 17 –
Are the
input signals
output at pins , , of
EVSI on the PWB ass’y
input terminal
VIDEO?(*)
Is
a voltage
input at pin of
EVSI on the PWB ass’y
input terminal
VIDEO?
Video signal
Y signal
C signal
PWB ass’y signal
PWB ass’y signal Power unit
(circuit)
PWB ass’y input
terminal VIDEO
NO
YES
NO
+9V
YES
Check at operating mode
* Input both S signal &
composite video signal
1
1 3 5
6
6
3
5
No picture is displayed although
there is the VIDEO signal input.

– 18 –
Picture is not displayed
(both RGB and VIDEO input)
PWB ass'y signal
NO
YES
Are
voltage input
at pins , , , , ,
of EDS1 on the
PWB ass'y
drive?
PWB ass'y input terminal RGB
+6.6V
+16.5V
+5V
+5V
+5V
+5V
~ R signal
~ G signal
~ B signal
H sync (RGB)
V sync (RGB)
Power unit (circuit)
LCD module ass'y
Are the
signal output at
each pin of E701, E801
and E901 on the PWB
ass'y drive?
PWB ass'y drive
NO
YES See page 18
Are signal
input at each pin
on the PWB ass'y
drive?
NO
YES PWB ass'y drive
: PSIG
: GND
~ : VSIG
: 15.5V
: HST
, : HCLK
, : GND
: ENB
: VCK
: VST
: PCG
: 15.5V
: COM
IS02 : V sync
IS02 : H sync
I510
120 ~ 124 , 126 , 128 , 132 : R signal data
I510 133 ~ 140 : G signal data
I510 ~ , 110 , 111 : B signal data
PWB ass'y DIGITAL
Are signal
input at these
pins of EDI1 on the
PWB ass'y
drive?
NO
YES PWB ass'y drive PWB ass'y input terminal RGB
Check at operating mode with RGB1 or 2 input
10
10
12
12 14
14
21
22
12
14
4
4
6
8
2
1
1
2
3
3
4
7 9
6 8
94
14
15
17
18
20 21
19
23
24
25
29
30
31
99

– 19 –
No sound
Are
the audio
signal output at pins
, of EVS1 on the PWB
ass'y input terminal
VIDEO?
PWB ass'y signal
Power unit (circuit)
YES
Audio L, Audio R
PWB ass'y input terminal VIDEO
NO
No sound when VIDEO signal input
(Sound is heard when RGB signal input)
Are the audio L signal
and audio R signal input at
terminals of each
speaker?
YES
NO
No sound both RGB and
VIDEO signal input
PWB ass'y signal
Speaker
Check at operating mode
10
10
8
8
Can not control to mouse or RS232C
Are
the signals
input at pins , ,
of I201 on the PWB ass'y
drive?
PWB ass'y drive
YES PWB ass'y RGB
NO
Mouse
TD
RD
Pin No RS232C PS/2 ADB Serial
1
2
3
6
7
9
10
12
13
14
SEL0
RTS
GND
RDP
TDP
CLK
DATA
SEL0
RTS
+5V
GND
DATA
RTS
+5V
GND
SEL0
RTS
GND
TD
62
62
Check at operating mode
1
1
2
2

– 20 –
Signal Waveforms of P701, P801 and P901 (Input signal is VGA3)
4.5V
7.8V
4.5V
1H(17 s)
1 PSIG (Uniformity Signal)
1.9V
1.9V
3.0 ~ 5.0V
7.8V
3.0 ~ 5.0V
1H(17 s)
3 ~ 14 VIDEO SIGNAL
1H(17 s)
5V
17 HST
360 s
5V
180ns
18 , 19 HCK1,HCK2
1H(17 s)
5V
29 PCG
1.6 s
7.5V (DC)
31 COM
1V
5V
25 VST
34 s
1H(17 s)
5V
24 VCK
5V
1H(17 S)
23 ENB
1.8 S