Hitachi CP-S830W User manual

HITACHI
CP-S830W
SERVICE
MANUAL
CP-S830E
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 liquid crystal projector. Be sure to read cautionary
items described in the manual to maintain safety before servicing.
Service Warning
. When replace the jamp, to avoid burns to your fingers. The lamp becomes too hot.
. 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.
. 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.
. Do not touch the exhaust fan, during operation.
. The LCD module ass'’y is likely to be damaged. If replacing to the LCD module ass'y, do not hold the FPC of
the LCD module ass'y.
. Features . Block diagram
. Specifications . Wirtng diagram
. Names of each part
. Adjustment
Basic circuit diagram
. Connector connection diagram
. Troubleshooting Disassembly diagram
. Service noints . Replacement parts list
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Liquid Crystal Projector
August 1998 Image & Information Media Systems Division Yokohama Operation

CP-S830W
CP-S830E
1. Features
p 0.9" polysilicon liquid crystal panel
p> 150W UHB lamp
>» Video input compatible with NTSC/PAL/SECAM video signals
>» RGB input compatible with IBM® PCs, Macintosh® and NEC® PC98 computer signals
p> 2 VIDEO IN systems, 2 RGB IN systems, and 1 RGB OUT system
>» RS232C communication
> Mouse emulation
Liquid crystal
panel
Y/C Y : 1.0Vp-p (75Q termination)
RGB input / Saba eaten
0~200mVrms, 1kQ
Operation ec
Storage : -20~60°C
POWERS COI certetretetceeeteeeeeeceeees 3 Mouse cable <cscccecceeeeteceeeee seen 3
NTSC , 4.43NTSC , PAL, M-PAL , or SECAM
C : 0.286Vp-p (NTSC burst signal, 75Q termination)
output H/V separate (H/V composite: only 15kHz RGB)
Sync signal
TTL level
Speaker output 1W + 1W (stereo)
236 (W) x 105 (H) x288 (O) mm
Remote control eer rrrr error trea RGB signal cable sa nites Sie ei@esintehe easce! eieteield 3.
Accessories
Stereo mini cable Ob ween eceecencewensen 1 S-Video cable See eener cere esrevoscenes 1
2. Specifications
Number of pixels 800 (H) x 600 (V)
Composite 1.0Vp-p (75Q termination}
Video input
Level
0.3Vp-p (PAL/SECAM burst signa!, 75Q termination)
: 200mVrms, 20kQ or less
Audio
Power supply AC100~120V/5A,AC220~240V/2.2A (50/60HzZ)
Batteries LR6 Cece are senescccenatovrorse 2 Video/Audio cable eee en ence enwneas 1
MAC adapter Seance esc ce eee eeeenerenesee

CP-S830W
CP-S830E
3. Names of each part
@Main unit @Operation section
momma MENU button
Picture adjustments.
ea
RESET button
Resets unit to factory settings.
~~ INPUT button
F To select the input source.
: Each time this button is pressed, the input
source is changed in sequence as shown
below.
MUTE
Button
cess
mma
|
RGB1—»
RGB2
—>
VIDEO1
—»
VIDEO?
A
Silences the sound. (Cancels the mute a
when the unit is set in mute mode.) _
LAMP indicator « ees TEMP indicator
This lights or blinks when the lamp does ‘ This lights or blinks when temperature
not light. Inside the projector 1s too high or when fan
is abnormal.
‘tie. ON ot]
See
LAMP
G)
TEMP
on™
“Bere © Q oval
STANDBY / ON DUttON om: me csmmromes
Power ON/OFF button.
OFF sets the unit in standby mode.
von ON indicator
This blinks in the standby mode and lights
in the operation mode.
STANDBY/ON
Speaker Speaker
|
ZOOM knob ...
Adjusts picture size. conser
Remote Control 2c
sensor
|
Ree
eee
eet
Cooling
fan
(exhaust)
Len
s
open
Lens
cap
—(Oy
* Handle
FOCUS knob
@Use the remote control transmitter within fleet ous:
the range of about 16 feet from the remote
control sensor and within 30° to both the
left and right.

CP-S830W
CP-S830E
_ Remote control sensor
oo
AC IN socket”
Connect the provided power cord. Main power ON/OFF switch.
©? OFF
| : ON
RGB input terminal
D-sub 15pin shrink terminal (1/2)
a
RGB output terminal
| D-sub 15pin shrink terminal
: RGB output can be displayed
: even in the standby mode.
©
RGB OUT
VIDEO input terminal o-:1cssmemownbl oe
(on video-equipped models only) cerns
S-VIDEO input terminal d ] CONTROL
Mint DIN 4pin connector (4/2) L ’ L [ae
VIDEO input terminal
E q 00000
RCA Jack (1/2) oe
AUDIO L/R input terminal : | [a L =
RCA Jack (1/2)
CONTROL terminal
D-sub 15pin shrink
© terminal
es 2 ie
: AUDIO output terminal
: (RGB/VIDEO)
Stereo mini Jack
AUDIO input terminal
Stereo mint jack (1/2)

CP-S830W
CP-S830E
@ Remote control transmitter
, MENU STICK SWITCH
" When menu screen is being displayed, an
adjustment item can be selected and adjustment
can also be done using this switch.
When menu screen is not displayed, this switch
can move mouse cursor, and also move picture
vertically or horizontally with the POSITION button
pressed.
STANDBY / ON button ~~.
Power ON/OFF button. 7
OFF
sets
the
unit
in
standby
mode.
RESET
/
RIGHT
button
When displays the on-screen menus, resets the
menu item to factory settings.
When removes the on-screen menus, works as
right quick button.
BRIGHT Button orr-rr2smncmrmmnnmnnnanrene
Adjusts bright.
he
» MENU ON / OFF button
Displays or removes the on-screen menus.
TIMER ON / OFF button r-nmmnnenny
Displays th tting time by count d a
isplays
the
setting
time
by
count
down
CONTRAST
button
Adjusts contrast.
BLANK ON / OFF button 9m
Blanks Picture:, Pressing the button again and “J a
keeping it pressed will reveal picture from top to :
bottom.
vow VOLUME button
Adjusts volume. The sound ts loud or low while
pressing the “/\” or “V’” button.
POSITION MUTE
POSITION Button me enmrnnrinirmmnnnlfomsnnfn women MUTE button
Moves the picture by MENU STICK SWITCH Silences the sound. (cancels the mute when the
when pressing the POSITION button. unit 1s set In mute mode.)
VIDEOQ1/2 RGB1/2
INPUT SELECT button 2.22020
Selects the input source.

CP-S830W
CP-S830E
Function for service
.
are
Press
the
RESET
button
of
the
projector
or
the
TIMER
Displayed
the
operating
time
of
the
lamp
button
of
the
remote
control,
for
3
seconds.
Press
the
RESET
button
of
the
projector
or
the
remote
Reset
the
operating
time
of
the lamp
control
MENU, for 3 seconds.
(During
be displayed
the
operating
time
of
the
lamp.)
Press the
MUTE button
of
the
projector
or the remote
Displayed
the
operating
time
of
the
projector
control,
for 3
seconds.
(During
be displayed
the
operating
time
of
the
lamp.)
When replacing the lamp, Reset the operating time of lamp.
Reset the lamp timer :
Please
carry
out
the
following
operation
within
10
minutes
from
power
on,
if
you
replaced
the
lamp
after
2,000
hours.
1
3
3 1,2
a a
S
RESET, e z | Ros + SI
2
Uh
2
<
Ee
(7
oO lq|o
= |mz
g ay) WO)
— <
XW as):
1) Press the RESET button on projector for 3 seconds or remote 2
control TIMER button for 3 seconds and display the total lamp
used time. | |
2) Press the RESET button on projector or remote control MENU LAMP 1700 hr
ON button during displaying the lamp used time.
3)
Select
the
"0"
on
the
screen
using
the
MENU
((«))
button
or
aetnaeeataen
1700
L]--0
MICANCEL
MENU STICK SWITCH.

CP-S830W
CP-S830E
Message table
On-screen display
The following messages are displayed on the screen.
"CHANGE THE LAMP"
“AFTER REPLACING LAMP, RESET |Lamp has 1,700 hours on it and may need to be changed.
THE LAMP TIMER"
"CHANGE THE LAMP"
"AFTER REPLACING LAMP,
RESET THE LAMP TIMER"
"THE POWER WILL TURN OFF
AFTER 20 Hr."
Blinking of "CHANGE THE LAMP"
"AFTER REPLACING LAMP,
RESET THE LAMP TIMER"
"THE POWER WILL TURN OFF
AFTER 0 Hr."
"NO INPUT IS DETECTED" Signal is not input.
"SYNC IS OUT OF RANGE" ihe penne frequency of the input signal exceeds the range of the projector,
it cannot be displayed.
Lamp has 1,979 hours on it.
See P.4 "Reset the lamp timer"
When the lamp has 2,000 hours or more on it, the message will blink, and the
power will turns off after 10 minutes.

2P-S830W
>P-S830E
Indicator display
The ON indicator, LAMP indicator and TEMP indicator will light or blink in the following cases.
Lights orange | Goesoft___| Goes off | Stancbymode |
[Binks orange | Goes of | Goes of | Dumgcoaing down
If the indicator is still lit, lamp
Lights red Lights red Goes off
may be defective. Replace.
Lights red Blinks red Lamp is not inserted Securely insert the lamp.
. : baat : Correctly reinstall so as not to
Lights red Lights red de too hight
ights re Goes off ights re Temperature insi ig block ventilation holes.
Lights red Blinks red Cooling fan accidented Replace fan.
: ‘
Accumulated
lamp
operation
Replace
lamp
and
reset
the
Blinks
red
Blinks
red
Goes
off
time
has
exceeded
2,000
accumulated
lamp
operation
hours
time.
When inside temperature becomes high because ventilation holes are blocked, normally, TEMP indicator will
light red. However, to protect the projector, the lamp may be turned off and at this time LAMP indecator may
light red.
Cool projector by power off for
60 minutes.
Lamp cannot light

CP-S830W
CP-S830E
4. Adjustment
4-1 Position to be adjusted
R665 ees
R962
R870
R668
BAT
R970
aaae
B
36
36
36 1 R748

CP-S830W
CP-S830E
4-2 White balance adjustment
Preparations for adjustment
1. Setting of condition
@ Apply heat-running for 10 minutes or more before
adjustment.
@ Project 40 inches size image with zoom set to the
widest.
2. Adjustment common voltage (flicker) .
Refer to the attached drawing.
@ Input 16 steps monochrome green with a timing
signal of SVGA VESA(60).
Adjust R748 so that brightness at about 30% part
of 16 steps Is the darkest.
@ Input 16 steps monochrome red with a timing signal
of SVGA VESA(60).
Adjust R848 so that brightness at about 30% part
of 16 steps is the darkest.
Adjustment Procedure
1. Adjustment of white balance.
@ Input 16 steps monochrome green at 0.7Vpp with a
timing signal of SVGA VESA(60).
@Adjust R665(W SUB CONTRAST) and R668(W
SUB BRIGHT) so that brightness of 16 steps is
best,....visual check.
@ Input white at 0.7Vpp with a timing signal of SVGA
VESA(60). And set CONTRAST , BRIGHT to
maximum.
@Major the normally white chromaticity. And note
these number. (x:xw,y:yw)
© Input gray pattern at 0.52Vpp with a timing signal of
SVGA VESA(60).
@Adjust R870(R SUB BRIGHT) and R970(B SUB
BRIGHT) so that the chromaticity at the center of
the picture is x=xw-0.0320.01,y=yw-0.034
0.01 (middle-brightness white balance)
About 30% part of 16 steps is here.
@Press the RESET button of the remote control
transmitter to set picture adjustment to NORMAL.
@Input 16 steps monochrome blue with a timing
signal of SVGA VESA(60).
Adjust R948 so that brightness at about 30% part
of 16 steps is the darkest.
@ Input horizontal green line (gray/black) signal with a
timing signal of SVGA VESA(60).
Adjust R748 so that flicker is the lest.
Adjust it so that flicker is the lest.
GAR
@ Input gray pattern at 0.21Vpp with a timing signal of
SVGA VESA(60).
®Adjust R862(R SUB CONTRAST) and R962(B
SUB CONTRAST) so that the chromaticity at the
center of the picture is x=xw-0.05+0.01,y=yw-
0.05+0.01 (iow-brightness white balance)
@ Repeat (5) to (8) and adjust middle-brightness and
jow-brightness white balance.
note When majoring and adjustment using Minolta
CL-100.
-~10-

CP-S830W
CP-S830E
4-3 Sample/Hold timing adjustment
Preparations for adjustment
@ Input cross hatch monochrome green with a timing @ Adjust S/H TIMING of adjustment menu (*) so that
signal of SVGA VESA(60). the most bright and same bright at all vertical lines.
@Adjust H.PHASE of menu so that the best at note Never adjust FINE of adjustment menu (*).
vertical lines. * how to set up adjustment menu
@Input vertical line (bright-black-black-bright-black- ist Push MENU bottom 2nd Push RESET bottom
black-bright-.....)monochrome green and keep 5sec. or more. 3rd Select S/H of head
with a timing signal of SVGA VESA(60). line.
4-4 Sensor adjustment
Preparations for adjustment
@Apply heat-running for 10 minutes or more before
adjustment.
Adjustment procedure
Adjust RW04 to get following values.
0.018 + 0.002 [V]
(Connect @ side to TWT1 and Oside to TWT2 by
digital meter.)
S44

CP-S830W
CP-S830E
5. Troubleshooting
Power can not be turned on
Are
voltage
input at pins @, @,
©, ® ,{) of EPOW on the
PWB ass'y
signal?
©
om
© +13V
@ +6.6V
Disconnect
ETEP for senser form
PWB ass'’y signal.
And retry turn
on?
is voltage at pin @
of EPOW on the
PWB ass’y signal?
PWB ass'y signal
Power unit (ballast)
~12-

CP-S830W
CP-S830E
Lamp does not light
What Is the state of
LAMP indicator?
Set the Lamp again Is the Lamp
connection?
Not light
Change the lamp. Not light
Does Lamp light?
between @ and
@® of ELCO on the PWB
ass'y signal. And
check again
Power unit (ballast)
MICRO SWITCH
Shorts
between pin ®
and@)ot 1201 on the
PWB ass'y drive. And
check again
PWB ass'y signal
PWB ass'y drive
What is the state of
TEMP indicator?
Is
pin © of
EBAF on the PWB ass'y
drive set to "L"?
oon Not tight
Do fans rotate?
is pin® of EBAR
on the PWB ass'y
drive set to "H"?
DC FAN (EXHAUSTION)
YES about 12V
PWB ass’y drive
Isa
voltage input
at pin @ of EBAF on the
PWB ass’y drive?
Is pin: of EBAR on
the PWB ass'y
drive set to "L"?
PWB ass'y drive
Is pin Base of Q213
onthe PWB ass'y
drive set to “L"?
Power unit (ballast)
Isa
voltage input
at pin @ of EBOF on the
PWB ass'y signal?
YES about 12V
DC FAN (INTAKE)
PWB ass'y signal
-13-

CP-S830W
CP-S830E
Picture is not displayed only
when the RGB signal Is input
Is
picture
displayed when selected
RGBi and RGB2
input?
YES
Is
the 1/2
selected signal
changed at pin @ of 1211
on the PWB ass'y
drive
YES
PWB ass'y drive
@ "L"=RGB1, "H"=RGB2
("H"=5V)
PWB ass'y input terminal RGB
input at positive pole
of C2A1 on the PWB
ass'y input terminal
PWB ass'’y signal
PWB ass'y input
terminal RGB
—~14-

CP-S830W
CP-S830E
Picture is not displayed only
when the VIDEO signal ts
input
Is
picture
displayed both
selected VIDEO1 and
VIDEO2?
Is
the 1/2
selected signal
changed at pin © of
PVID on the PWB ass'y
Input terminal
VIDEO?
Is
the 1/2
selected signal
changed at pin @ of l211
on the PWB ass'y
YES NO
© "L"=VIDEO1, "H"=VIDEO2
(" H "=5V)
PWB ass’y input terminal VIDEO
PWB ass’ drive
YES
Qt
'H'=2
("H"=5V)
Is
a voltage
input at pin @ of
PVDI on the PWB ass'y PWB ass'y signal
input terminal
VIDEO?
YES @+5V
PWB ass'y signal
Input signals
output at pins D, @, ©
of PVDI on the PWB ass'y
input terminal
VIDEO?
PWEB ass'y input
terminal VIDEO
YES @ Video signal
® Y signal
© C signal
PWB assy signal
“(5s

CP-S830W
CP-S830E
Picture is not displayed
(both RGB and VIDEO input)
Are
voltage
input at pins D,@,
©,®,4 of EPOW on the
PWB ass'y signal?
Power unit (circuit)
@ -7V
Isa
voltage at pin
@ of 1211 on the PWB
ass'y drive?
® = hye
"Hla 5V
YES
PWB ass'y drive
Are
voltage input
at these pins on the
PWEB ass'y drive?
PWB ass’y signal
C203 ©): 5V C702 G@):14.5V CP70 @:5V
CS70 @:5V CP39G@):5V CWO1@: 12V
IP23@°-5V CP69G):5V
PWB ass’y input terminal RGB
Are signal
Input at each pin
on the PWB ass'y
drive?
YES
PWB ass’y input terminal RGB PWB ass’y DIGITAL
IS02@ * H syne
1510 42) ~ 424), (28), (28), 48D : R signal data
1510 @33) ~ : G signal data
151093~@, (1, (i) : B signal data
YES See page 17
PWB ass’y drive
@, ®: VCOM
©, ®, ®, @: GND
0,0: 1450
:PCG
: VMC (14.5V or OV)
:V DATA
: VCP
: VCP
: HMC (14.5V or OV)
:HDATA —
6) ~ @:HCP 1~4, HCP 1~4
@, @ : SIG 1,2
@, - PSIG 1,2
signal output at
each pin of ERO1, EGO1,
EBO1 on the PWB
ass'y drive?
8B O©©908
-~16-—

CP-S830W
CP-S830E
No sound when VIDEO signal input
(Sound is heard when RGB signal input)
the audio
signal output at pins
©,@ of PVD1 on the PWB
ass'y input terminal
VIDEO?
YES
© Audio L, @ Audio R
PWB ass'y signal
No sound both RGB and VIDEO
signal input
PWB ass'y input terminal VIDEO
Is
the audio
L signal output at pin
@ of E4L, and audio R signal
output at pin © of E4R on the
PWB ass’y drive?
PWE ass'y signal
Can not control to mouse or RS232C
are rea aaereee!
ee ca
se |
[[seto [sto sete |
f==4
eote
ae
ee
ey a ev |v
a
Pepa ye ee
Are
the signals
mput at pins ©,S, @
of 1201 on the PWB ass'
drive?
YES @Mouse
@TbD
@RD
PWEB ass'y drive
PWB ass'y RGB
=

CP-S830W
CP-S830E
Signal waveforms of P501, P601 and P701 (Input signal is VGA3)
@, V COM
7.5V (DC)
@®vcP @VcP
he
12.5V ——
3.5V
tH.
(® HMC
EGO1 14.5V
ERO1, EBO1 GND
@ H DATA
200nS
2) ~ @ HCP
| =
| 100n8 |
@, 8) SIG 1,2

CP-S830W
CP-S830E
6. Service points
6 - 1 POINT
@ Before Removing the Drive Base
i
;
,
‘
PWB
ASS'Y
DRIVE
Note that
when
removing
the Drive Base,
if you
try to
pull
it
by
.
force, you may damage the connector linked with the RGB
Input Terminal Base. When removing the Drive Base, first
insert a flat-blade screwdriver with its end protected with
adhesive tape etc. into the slot between the Drive Base and the
RGB Input Terminal Base. Then please move the screwdriver
in the direction of the arrow, in a way that it does not damage
the Drive Base.
A
@ Before Removing the RGB Input Terminal Base
PWB ASS'Y INPUT
TERMINAL RGB
When removing the RGB Input Terminal Base, the signal base
may bend and get damaged. When removing the RGB Input
Terminal Base, please push the signal base with a
screwdriver's grip etc. in a way that the base does not gel y
damaged, then remove the RGB Input Terminal Base.
PWB ASS'Y INPUT
TERMINAL RGB
i
PWB ASS'Y SIGNAL
@ Before Replacing the Panel / Lens Prism
You should not replace separately the parts of the liquid crystal Pane! / Lens Prism because it works properly only
when used together. Therefore, regarding these parts, you can either replace part NO. 14, Panel / Lens Prism
Assembly, or send the whole unit NO. 14 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.
DISTRIBUTOR HITACHI
- Do not disassemble the unit
because replacement of separate
parts is not possible.
- For repairs of the product, please
contact our distributor.
KS
i ee Replacement of G PanelReconditioning
Return
G Panel
~19—

CP-S830W
CP-S830E
6 - 2 Removing the PWB ass'y input terminal Video, the upper case, the PWB ass’y drive, the
PWB ass'y digital, the PWB ass’y input terminal RGB, the dichroic optics unit, the lens
prism unit, the DC fan (exhaust) and the DC fan (intake). (Fig.6-2)
(1) Removing the PWB ass'y input terminal video.
1. Remove a screw Bo.
2. Disconnect a connector for PWB ass’y signal from the PWB ass'y input terminal video.
(2) Removing the upper case.
1. Remove the PWB ass'y input terminal video.
(Refer to item 6-2 (1).)
Please remove carefully the upper case because the speaker connectors are short wire.
2. Remove 5 screws Bi and remove the upper case ass'y and disconnect the operation panel connector and 2
connectors for speaker from PWB ass’y drive.
(3) Removing the PWB ass'’y drive.
1. Remove the PWB ass'y input terminal video.
(Refer to item 6-2 (1).)
2. Remove the upper case.
(Refer to item 6-2 (2).)
3. Release the lock of the connector housing and disconnect the FPC of the LCD module ass'y.
4. Remove 4 screws B2 and disconnect 3 connectors for the DC fans and the power unit.
5. Remove PWB ass’y drive form PWB ass’y input terminal RGB.
(4) Removing the PWB ass’y digital.
1. Remove the PWB ass'y input terminal video.
(Refer to iter 6-2 (1).)
2. Remove the upper case.
(Refer to item 6-2 (2).)
3. Removing the PWB ass’y drive.
(Refer to item 6-2 (3).)
4. Remove 2 screws B3 and remove the PWB ass’y digital form PWB ass'y drive.
(5) Removing the PWB ass’y input terminal RGB.
1. Remove the PWB ass'y input terminal video.
(Refer to item 6-2 (1).)
2. Remove the upper case.
(Refer to itern 6-2 (2).)
3. Remove the PWB ass’y drive.
(Refer to item 6-2 (3).)
4. Remove a screw B4 and disconnect 3 connectors and remove the PWB ass’y input terminal RGB.
(6) Removing the dichroic optics unit.
1. Remove the PWB ass'’y input terminal video.
(Refer to item 6-2 (1).)
2. Remove the upper case.
(Refer to iter 6-2 (2).)
3. Remove the PWB ass'y drive.
(Refer to item 6-2 (8).)
4. Removing the PWB ass'y input terminal RGB.
(Refer to item 6-2 (4).)
5. Remove 3 screws B5 and disconnect a connector for DC fan (intake).
6. Remove 3 screws B6 and disconnect a connector for the lamp.
—~20-