Christie D Series User manual

'6HULHV
/:8L/+'L/:8L
Service Manual



SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia LCD Projector
SERVICE MANUAL
LWU720i
LHD720i
LWU620i
LWU720i/LHD720i/LWU620i Service Manual
020-001338-0(0-201)1
Warning
The technical information and parts shown in this
manual are not to be used for: the development,
design, production, storage or use of nuclear, chemical,
biological or missile weapons or other weapons of
mass destruction; or military purposes; or purposes that
endanger global safety and peace. Moreover, do not
sell, give, or export these items, or grant permission for
use to parties with such objectives. Forward all inquiries
to the supplier.
%HVXUHWRUHDGWKLVPDQXDOEHIRUHVHUYLFLQJ7RDVVXUHVDIHW\IURP¿UHHOHFWULFVKRFNLQMXU\KDUPIXO
radiation and materials, various measures are provided in this Multimedia LCD Projector.
Be sure to read cautionary items described in the manual to maintain safety before servicing.
Caution
:KHQUHSODFHWKHODPSDYRLGEXUQVRQ\RXU¿QJHUV7KHODPSEHFRPHVWRRKRW
1HYHUWRXFKWKHODPSEXOEZLWKD¿QJHURUDQ\WKLQJHOVH1HYHUGURSLWRUJLYHLWDVKRFN7KH\PD\
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 (circuit) and power unit (ballast), after turning on the projector.
4. Do not touch the exhaust fan, during operation.
5. If replacing to the LCD PRISM assembly, do not hold the FPC of the LCD module assembly.
8VHWKHFDEOHVZKLFKDUHLQFOXGHGZLWKWKHSURMHFWRURUVSHFL¿HG
Service Warning
1. Features------------------------------------------------------3
 6SHFL¿FDWLRQV -----------------------------------------------4
3. Names of each part----------------------------------------5
4. Adjustment---------------------------------------------------6
5. Troubleshooting ------------------------------------------ 15
6. Service points--------------------------------------------- 27
7. Wiring diagram-------------------------------------------- 51
8. Disassembly diagram----------------------------------- 73
9. RS-232C communication -----------------------------110
%ORFNGLDJUDP--------------------------------------------128
11. Connector connection diagram----------------------129
12.Basic circuit diagram-----------------------------------131
Contents
1. Cross-head screwdriver (Size #1, #2)
2. Hexagonal nut driver (opposite side distance: 5mm)
3. Torque driver
4. Antistatic mat
5. Antistatic strap
Required tools

2
LWU720i / LHD720i / LWU620i
LWU720i/LHD720i/LWU620i Service Manual

CAUTION FOR SAFETY
3OHDVHUHDGWKLVSDJHEHIRUHWKHUHSDLUZRUN7KLVSDJHH[SODLQVWKHLQGLFDWLRQVRIWKHIROORZLQJ
LWHPVWRNHHSVDIHW\DQGSUHYHQWDQDFFLGHQW
zEntries with graphical symbol explanation
WARNING 7KLVHQWU\ZDUQVRIDULVNRISHUVRQDOVHULRXVLQMXU\RUHYHQGHDWK
CAUTION
7KLVHQWU\ZDUQVRIDULVNRISHUVRQDOLQMXU\SK\VLFDORUSURSHUW\GDPDJH
zTypical graphical symbols explanation
This symbol indicates
warnings and cautions. This symbol indicates hazard of high voltage. This symbol indicates mandatory actions.
This symbol indicates
hazard of explosion. This symbol indicates hazard of hand crush. This symbol indicates coercing to unplug.
This symbol indicates
hazard of high temperature.
This symbol indicates
prohibited actions.
WARNING
Follow the instructions.
7KHZDUQLQJODEHOVRUPDUNLQJVDUHRQWKHSDUWVZKLFKQHHGVSHFLDODWWHQWLRQ
Follow those notes and the User's Manual - Safety Guide.
Avoid electric shock.
%HFDUHIXODQGXQSOXJWKHSRZHUFRUGDVIDUDVSRVVLEOHGXULQJWKHZRUN%HVXUHWR
unplug when disassembling or assembling.
The projector has high voltage portion and possibly charged portion. If you touch such a
SODFHRURWKHUOLYHSDUWLWFDXVHHOHFWULFVKRFNDQGPD\OHDGWRGHDWK
8VHVSHFL¿HGRUUHFRPPHQGHGFRPSRQHQWV
Use the components which have same characteristic especially about incombustibility
DQGYROWDJHSURRIDVSUHYLRXVIRUNHHSLQJVDIHW\DQGUHOLDELOLW\%HSDUWLFXODUO\VXUHWR
XVHWKHFRPSRQHQWVPDUNHGZLWK in the replacement parts list and circuit diagram.
8VLQJXQVSHFL¿HGRUQRQUHFRPPHQGHGFRPSRQHQWVPD\FDXVHHOHFWULFVKRFNRU¿UH
Keep same style of wiring and components.
This product uses insulating tapes or tubes, and has some components assembled
NHHSLQJGLVWDQFHIURPSDUWLFXODUSRUWLRQWRNHHSVDIHW\DQGUHOLDELOLW\$OVRWKHFDEOHV
DUHZLUHGVRWKDWWKH\NHHSDZD\IURPKLJKWHPSHUDWXUHRUYROWDJHSDUW
%HVXUHWRUHVWRUHWKHPWRSUHYHQWDQHOHFWULFVKRFNDQGD¿UHDIWHU\RXKDYHFKDQJHGWKHP
Do safety inspection after repair work.
&KHFNLIWKHDOOLVUHVWRUHGUHPRYHGSDUWVDQGZLULQJDUHVDPHFRQGLWLRQDVSUHYLRXV
DIWHUUHSDLUZRUN$OVRFKHFNLIDQ\GDPDJHDUHDURXQGWKHUHSDLUHGRUUHSODFHGSDUW
Measure the insulation resistance with megohmmeter after visual inspection. If the
UHVLVWDQFHLVOHVVWKDQ0RKPLWPD\FDXVHHOHFWULFVKRFNDQG¿UH
CAUTION
Take care of LCD panels.
Hold by the frame when disassembling the component including LCD panel. If you hold
it by the FPC cable or the surface of the panel, it may get damaged.
Do not touch the fan motor while it is rotating.
Do not touch the fan motors when you have turned on the projector with the UPPER
CASE removed. It may injure you.

3
LWU720i / LHD720i / LWU620i
LWU720i/LHD720i/LWU620i Service Manual

1. Features
!$GYDQFHG1HWZRUN)XQFWLRQV
Not only can you control and monitor the projectors via LAN connection, but also project still or
PRYLQJLPDJHVIURPRQHRUPRUHQHWZRUNHGFRPSXWHUV
!:LUHOHVV1HWZRUN&DSDELOLW\
<RXFDQXVHWKHZLUHOHVVQHWZRUNE\FRQQHFWLQJWKHSURMHFWRUWRD3&XVLQJWKHRSWLRQDO86%
wireless adapter.
!,QVWDQW6WDFN
7ZRSURMHFWRUVRIVDPHPRGHOFDQSURMHFWDQLPDJHRQWKHVDPHVFUHHQXVLQJWKH,QVWDQW6WDFN
IHDWXUH7KH\FDQEHRSHUDWHGVLPXOWDQHRXVO\WRPDNHWKHLPDJHEULJKWHUPRUHRYHUFDQZRUN
alternately by themselves, and once one projector has an accident the other voluntarily starts to
ZRUNWRNHHS\RXUSUHVHQWDWLRQJRLQJ
>LENS MEMORY
The projector is capable of storing the lens shift position.
>Status monitor
The projector displays the present status or the error log with the sub LCD monitor.
>Flexible installation
,WLVSRVVLEOHWRLQVWDOOWKHSURMHFWRUIRUDQ\YHUWLFDOGLUHFWLRQZLWKVSHFL¿HGPRXQWLQJ
accessories.
7KHVLGHSODQHVRIWKHSURMHFWRUVKRXOGEHNHSWYHUWLFDO
>Picture by Picture, Picture in Picture
You can project two images from different input ports on one screen at the same time. With the
remote control, it is easy to turn on/off this function and select the input source for the main and
sub areas.
>eClarity
eClarity is a function to improve the legibility so that it helps to read small letters.
>HDCR
Advanced feature which is the image stabilizer for a clearer image.
>HDBaseT™ covered
Gives one more digital interface to get clearer pictures on a screen.

4
LWU720i / LHD720i / LWU620i
LWU720i/LHD720i/LWU620i Service Manual

6SHFL¿FDWLRQV
Liquid crystal
panel
Drive system TFT active matrix
Panel size LWU620i/LWU720i: 1.9cm (0.76" type)
LHD720i: 1.9cm (0.74" type)
Number of pixels LWU620i/LWU720i: 1920(H) x 1200(V)
LHD720i: 1920(H) x 1080(V)
Lamp LWU620i: 370W UHP
LWU720i/LHD720i: 430W UHP
Digital
audio/video
signal
HDMI 1Type: T.M.D.S Signal level: DC 3.3V±5%, AC 0.15-1.56Vp-p
$XGLRVLJQDO/LQHDU3&0IRUPDW6DPSOLQJIUHTXHQF\N+]N+]N+]
2
DisplayPort Data Rate: 2.7Gbps or 1.62Gbps per lane Lane Count: 4-, 2-, or 1-lane
$XGLR6LJQDO/LQHDU3&0IRUPDW6DPSOLQJIUHTXHQF\N+]N+]N+]
SDI 6'6',6LQJOHOLQN+'6',*6',/HYHO$
Computer
signal
COMPUTER IN (Dsub) 9LGHR$QDORJ9SSȍWHUPLQDWLRQ H/V. sync.: TTL level (positive/negative)
Composite sync.: TTL level
MONITOR OUT 9LGHR$QDORJ9SSȍRXWSXWLPSHGDQFHSRVLWLYH H/V. sync.: TTL level (positive/negative)
Composite sync.: TTL level
Video signal VIDEO 9SSȍWHUPLQDWLRQ
HDBaseT* (RJ45) Signal type: PAM16
Differential signal level: 1.9~2.1V
Audio signal AUDIO IN 1P9UPVLQSXWLPSHGDQFHNȍRUPRUHPD[9UPV 2 (L/R)
AUDIO OUT (L/R) P9UPVRXWSXWLPSHGDQFHNȍPD[9UPV
RS-232C Input: Hi: Max. 20V, Min. 2.6V Lo: Typ. –20.0V, Max. 0.8V
Output: Hi: Typ. 8.0V, Min. 5.0V Lo: Typ. –7.0V, Max. –5.0V
USB
TYPE A
(wireless LAN ***)
I/O Level
Amplitude of
differential signal (D+)-(D-)>0.2V and D+>2.0V or (D-)-(D+)>0.2V and D->2.0V
I/O Level
Amplitude of
signal INPUT: “L” 0.8V or less, “H” 2.0V or more
OUTPUT: “L” 0.3V or less, “H” 2.8V~3.6V
USB Mini B **
(Service port)
I/O Level
Amplitude of
differential signal (D+)-(D-)>0.2V and D+>2.0V or (D-)-(D+)>0.2V and D->2.0V
I/O Level
Amplitude of signal
INPUT: “L” 0.8V or less, “H” 2.0V or more
OUTPUT: “L” 0.3V or less, “H” 2.8V~3.6V
Wired LAN HDBaseT* (RJ45) System: 100Base-T
'LIIHUHQWLDOVLJQDOOHYHOa9ȍWHUPLQDWLRQ
LAN* (RJ45) System: 100Base-TX / 10Base-T
'LIIHUHQWLDOVLJQDOOHYHOa9ȍWHUPLQDWLRQ
Wireless LAN *** IEEE802.11b/g/n See the user's manual of the optional USB wireless adapter.
6SHDNHU 8W×2(mono)
Power supply LWU620i : AC100V-120V/5.2A, AC220V-240V/2.5A
LWU720i/LHD720i : AC100V-120V/5.9A, AC220V-240V/2.9A
Power consumption LWU620i : AC100V-120V/510W, AC220V-240V/500W
LWU720i/LHD720i : AC100V-120V/580W, AC220V-240V/560W
Dimensions 498 (W) x 170 (H) x 456 (D) mm (Not including protruding parts)
Weight DSSUR[NJ
Temperature range Standard mode: 32-104°F (0-40°C), Eco mode: 32-113°F (0-45°C),
Storage : -20~60°C
Accessories Remote control x1 User’s manual x 1 Application CD x 1
Security label x 1 Power cord x 1 or 3 Computer cable x 1
Adapter cover x 1 HDMI-DVI cable x 1 Terminal cover x 1
Cable tie x 2 HDMI cable holder x 2
* DC power cannot be provided from these ports.
** The service mini USB port is hidden behind the rear panel (mini USB COVER).
:LUHOHVVQHWZRUNIXQFWLRQUHTXLUHVWKHRSWLRQDO86%ZLUHOHVVDGDSWHU7KHFRPPXQLFDWLRQVSHHGDQGVWDQGDUGLVUHVWULFWHG
GHSHQGLQJRQFLUFXPVWDQFHVOLNHHQFU\SWLRQFRPPXQLFDWLRQPRGHDQGVRRQ

5
LWU720i / LHD720i / LWU620i
LWU720i/LHD720i/LWU620i Service Manual

1DPHVRIHDFKSDUW
Projector
(1) Lamp cover
The lamp unit is inside.
(2) Speakers (x2)
(3) Filter cover
7KHDLU¿OWHUDQGLQWDNHYHQW
are inside.
(4) Elevator feet (x2)
(5) Remote sensors (x2)
(6) Lens hole cover
(7) Indicators
(8) Intake vents
(9) Control panel
(10) Status Monitor
(11) AC (AC inlet)
(12) Exhaust vents
(13) Ports
(14) Security bar
(15) Security slot
(16) Safety bar
(17) Battery cover
(8)
(3)
(2)
(4)
(7)
(5)
(4)
(9)
(12)
(8)
(8)
(11) (15) (14)
(1)
(16)
(5)
(6)
(13)
(10)
(2)
(17)
Control panel and Indicators
(1) STANDBY/ON button
(2) INPUT button
(3) MENU button
(4) LENS SHIFT button
(5) ZOOM button
(6) FOCUS - / +buttons
(7) SHUTTER button
(8) FUNCTION button
(9) FILTER indicator
(10) SHUTTER indicator
(11) SECURITY indicator
(12) LAMP indicator
(13) TEMP indicator
(14) POWER indicator
SHUTTER
(5)
(8)
(1)
(3)
(4)
(6)
(2)
(9) (10) (11) (12) (13) (14)
(7)
 COMPUTER INSRUW
 HDBaseTSRUW
 LANSRUW
 WIRELESSSRUW
 HDMI 1SRUW
 HDMI 2SRUW
 DisplayPortSRUW
 VIDEOSRUW
 SDISRUW/:8L/+'L
 AUDIO IN1SRUW
 AUDIO IN2L, RSRUWV
 AUDIO OUT SRUW
 MONITOROUTSRUW
 REMOTECONTROL INSRUW
 REMOTECONTROL OUTSRUW
 CONTROLSRUW






















 
 




LWU620i
LWU720i/LHD720i
3RUWV
$Q\EXWWRQPDUNHGZLWKLVQRWVXSSRUWHGRQWKLVSURMHFWRU
 (DFKWLPH\RXSUHVVDQ\EXWWRQH[FHSWIDEXWWRQVWKHIDEXWWRQRIFXUUHQW
VHOHFWHG,'QXPEHUOLJKWV
NOTE
Remote control
 STANDBYEXWWRQ
 ONEXWWRQ
 ID - 1234EXWWRQV
 COMPUTER 1EXWWRQ
 COMPUTER 2EXWWRQ
 VIDEOEXWWRQ
 LANEXWWRQ
 USB TYPE AEXWWRQ
 USB TYPE BEXWWRQ
 HDMI 1EXWWRQ
 HDMI 2EXWWRQ
 DisplayPortEXWWRQ
 
HDBaseTEXWWRQ

SDIEXWWRQ
6XSSRUWHGRQO\IRU/:8L/+'L

(15) DIGITALEXWWRQ
(16) FOCUS + / -EXWWRQV
(17) ZOOM + / -EXWWRQV
(18) LENS SHIFTEXWWRQ
(19) LENS MEMORY LOAD / SAVE EXWWRQV
(20) LENS LOCKEXWWRQ
(21) OSD MSGEXWWRQ
(22) ŸźŻŹFXUVRUEXWWRQV
(23) ENTEREXWWRQ
(24) AV MUTEEXWWRQ
(25) MENUEXWWRQ
(26) GEOMETRYEXWWRQ
(27) PICTUREEXWWRQ
(28) LAMPEXWWRQ
(29) RESETEXWWRQ
(30) ASPECTEXWWRQ
(31) AUTOEXWWRQ
(32) MAGNIFY ONOFFEXWWRQV
(33) VOL +-EXWWRQV
(34) FREEZEEXWWRQ
(35) PbyPEXWWRQ
(36) MY BUTTON - 1 /2 /3 /4EXWWRQV
(37) %DWWHU\FRYHU
(38) :LUHGUHPRWHFRQWUROSRUW
%DFNRI
WKHUHPRWHFRQWURO
































 

 


6
LWU720i / LHD720i / LWU620i
LWU720i/LHD720i/LWU620i Service Manual

4-1 Before adjusting
4-1-1 Selection of adjustment
When any parts in the table below are changed, choose the proper adjusting items with the chart.
In addition, setup of the projector according to the chapter 4-8 by service engineers or users is
recommended after all adjustments are done.
Relation between the replaced part and adjustment
Replaced part
Adjustment
AIR
SENSOR
(Chap.4-2) PSIG
(Chap.4-3) )OLFNHU (Chap.4-4) White
balance
(Chap.4-5)
Color
uniformity
(Chap.4-6)
LENS
SHIFT
(Chap.4-7) GHOST
(Chap.4-8)
DICHROIC OPTICS UNIT
(DICHROIC OPTICS ASS'Y)
ڹڹڹڹڹ
LCD Prism Shift mech. assembly
(LCD/PRISM ASS’Y)
ۑۑڹڹۑۑ
MAIN PCB
(PWB ASS’Y MAIN)
ۑۑۑڹڹۑۑ
LAMP UNIT
(LAMP UNITASS'Y)
ڹڹڹڹ
SENSOR-A/B PCB
(PWB ASS’Y SENSOR-A/B)
ۑ
R/G/B PANEL FAN
(DC FAN
CY8028LPWM-Z4-L341)
ۑ
BOTTOM CASE
(BOTTOM CASE ASS'Y)
ۑ
ۑ: means need for adjustment. : means not need for adjustment. ڹ: means recommended.
$GMXVWPHQW
4-1-2 Setting of condition before adjustments
:DUPLQJXS7XUQRQWKHODPSDQGNHHSLWRQIRU
more than 10 minutes before starting adjustments.
2. Set the image size: Set zoom wide to Max. and
project an image more than 1 m (40 inches) in
diagonal size.
3. Resetting aspect and distortion of the image:
Press the MENU button and select EASY MENU -
RESET. Press the Źor ENTER button to display
RESET dialog and choose the OK with the Ź
button. Set and adjust each item in the EASY
MENU again after adjustment.
4. Displaying the FACTORY MENU: Perform all
adjustments from the FACTORY MENU.
Using the remote control...
a. Press the MENU button and select EASY
MENU - RESET. Press the Źor ENTER button
to display RESET dialog.
b. Next, press the RESET button,then re-press
and hold the RESET button for 3 seconds or
longer (the FACTORY MENU will appear).
Using the control panel of the projector...
a. Press the MENU button and select EASY
MENU - RESET. Press the Źor ENTER button
to display RESET dialog.
b. Next, press the źEXWWRQ¿UVWWKHQSUHVVDQG
hold the źand INPUT button for 3 seconds or
longer (the FACTORY MENU will appear).
Move the cursor among the items of the menu with
Ÿand źbuttons, and select and enter with Źor
ENTER button.

7
LWU720i / LHD720i / LWU620i
LWU720i/LHD720i/LWU620i Service Manual

When you replaced the MAIN PCB, SENSOR-A/
B PCB, PANEL FAN or BOTTOM CASE, or
when you re-attached the PANEL DUCT to the
%27720&$6(PDNHVXUHWRFDUU\RXWWKLV
adjustment after re-assembling the projector and
FOHDQLQJWKHDLU¿OWHU
A-SENS bar
A-SENS >>EXE 1:xxxx 2:xxxx 3:xxxx 4:xxxx END
Adjustment procedure
1. Display the A-SENS bar with the Ÿand ź
buttons in FACTORY MENU - VID-AD1.
2. Press the Źbutton to run automatic adjustment
program. The cell END is highlighted in about 5
PLQXWHVDIWHUWKHDGMXVWPHQW¿QLVKHG
4-2 AIR SENSOR adjustment
Test patterns for the adjustment
NOTE: The test pattern sometimes has
a horizontal line across the screen.
V.COM bar
V.COM Rxxx Gxxx Bxxx Wxxx
Adjustment procedure
1. Display the V.COM bar with the Ÿand źbuttons
in FACTORY MENU - DAC-P.
2. Select the cell R, and use the Ÿand źbuttons
WRDGMXVWVRWKDWWKHÀLFNHUDWWKHFHQWHURIWKH
VFUHHQLVOHVVWKDQWKHÀLFNHUDWWKHSHULSKHU\
:KHQWKHÀLFNHULVDOPRVWVDPHDFURVVWKHZKROH
VFUHHQDGMXVWVRWKDWWKHÀLFNHUDWWKHFHQWHURI
the screen is less than elsewhere.)
3. In the same way, use the cells G and B in turn to
DGMXVWWKHHDFKFRORUÀLFNHU
4-4 Flicker adjustment (V.COM adjustment)
Each color (128/255)
Test patterns for the adjustment P-SIG bar
P-SIG Rxxx Gxxx Bxxx
ATTENTION
0DNHWKLVDGMXVWPHQWZRUNEHIRUHWKH)OLFNHU
adjustment.
Adjustment procedure
1. Display the P-SIG bar with the Ÿand źbuttons
in FACTORY MENU - DAC-P.
2. Select the cell R, and use the Ÿand źbuttons
to adjust so that vertical bars are minimized.
3. In the same way, use the cells G and B in turn to
adjust so that vertical bars are minimized.
4-3 PSIG adjustment (vertical bars adjustment)
64/255
88/255
112/255
136/255
160/255
64
/255 88 /255 112 /255 136 /255 160 /255
ENTER button

8
LWU720i / LHD720i / LWU620i
LWU720i/LHD720i/LWU620i Service Manual

Test patterns for the adjustment
SB-CNT bar
SB-CNT R+xx G+xx B+xx W+xx
SB-BRT bar
SB-BRT R+xx G+xx B+xx W+xx
ATTENTION
3HUIRUPWKHIROORZLQJVEHIRUHPDNLQJWKLV
DGMXVWPHQWZRUN
䞉㻌
Set the WHITE BALANCE in SETUP menu
- GEOMETRY CORRECTION - EDGE
BLENDING - WHITE BALANCE - OFFSET
and GAIN to all “+0” .
䞉㻌
Complete the DC OFF adjustment. When only
the LAMP UNIT is replaced, DC OFF adjustment
LVQRWUHTXLUHGVRWKDWWKLVDGMXVWPHQWZRUNFDQ
EHGRQHDIWHU)OLFNHUDGMXVWPHQW
Adjustment procedure
1. Select GAMMAin the FACTORY MENU and press
the RESET button to display the dialog. Select
RESET to reset gamma correction.
2. Display the SB-CNT bar with the Ÿand ź
buttons in FACTORY MENU - GAMMA.
3. Select the cell G, and change the test pattern
to 33-tone grayscale in green with the ENTER
button.
4. Use the Ÿand źbuttons to adjust so that
brightness of 33 steps is best.
5. After completing above, display the SB-BRT bar.
6. Select the cell R or B, and change the test
patterns to 33-tone grayscale with the ENTER
button.
ATTENTION
'RQRWFKDQJHWKHFHOO*RI6%%57WRNHHS
the best contrast ratio.
7. Use the Ÿand źbuttons to adjust so that low-
brightness white balance is best.
8. Select the other cell and adjust in the same way.
9. Display the SB-CNT bar again.
10. Change the test patterns and adjust so that
middle-brightness white balance is best at the
cells R and B in the same way as low-brightness.
11. Repeat adjusting low/middle-brightness white
balance with R and B color so that brightness
and white balance of 33 steps is best.
4-5 White balance adjustment (visual inspection)
Each color
(255/255)
White (255/255)
33-tone grayscale
(W/G)
33-tone grayscale
(W/G)

9
LWU720i / LHD720i / LWU620i
LWU720i/LHD720i/LWU620i Service Manual

Test patterns for the adjustment
Adjust tone menu
Tones to be adjusted
Adjustment lattice point nos.
C.UNIF. -MIN- No.1 R±xxx G±xxx B±xxx
-MID-1- No.2
-MID-6- No.17
-MAX-
ON/OFF -ON-
-OFF-
Adjustment lattice point position
ATTENTION
3HUIRUPWKHIROORZLQJVEHIRUHPDNLQJWKLV
DGMXVWPHQWZRUN
䞉
Reset COLOR UNIFORMITY in SETUP menu.
䞉Complete the White balance adjustment.
Preparations
1. Display the Adjust tone menu in FACTORY
MENU - C.UNIF..
Next on the right of "C.UNIF.", 2nd cell from the
left shows tone to be adjusted. Use the Ÿor ź
button to switch the tone.
Next on the right of tones, 3rd cell from the left
shows the no. of adjustment lattice point. Use the
Ÿor źbutton to switch the point.
3 cells from the right show adjusted value of R, G
and B colors. Use the Ÿand źbuttons to adjust
each color.
0DNHFRORUXQLIRUPLW\DGMXVWPHQWVIRUWKH
following 8 tones.
-MIN- tone (approx. 7% input signal)
-MID-1- tone (approx. 14% input signal)
-MID-2- tone (approx. 21% input signal)
-MID-3- tone (approx. 29% input signal)
-MID-4- tone (approx. 39% input signal)
-MID-5- tone (approx. 50% input signal)
-MID-6- tone (approx. 75% input signal)
-MAX- tone (approx. 90% input signal)
3. The adjustment lattice point nos. correspond
to the point positions in the diagram. 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.
NOTICE: Point No.1 should not be adjusted
because it controls the brightness of the entire
screen. Note that when adjusting a point, it affects
around the point.
4. To temporarily turn correction off, place the
cursor on "C.UNIF." in the Adjust tone menu, and
press the źbutton to display ON/OFF bar. Move
the cursor to ON, and press the źbutton. To turn
it on again, place the cursor on OFF and press
the Ÿbutton.
5. The following two patterns of internal signals are
available for this adjustment. Use the ENTER
button to switch it.
Solid monochrome adjustment color (for G color
adjustment with a color differential meter).
Solid white (for adjustment other than above).
6. Reset values before adjustment, if necessary.
Single value resets cannot be performed.
When resetting all values, place the cursor on
C.UNIF. in FACTORY MENU, press the RESET
button and select RESET in the dialog.
When resetting the values of single tone, place
the cursor on the tone to be reset, press the
RESET button and select RESET in the dialog.
4-6 Color uniformity adjustment
V/3
V/3
V/6
V/6
H/6 H/6H/3H/3
14
15
16
17
12
13
10 111
6
7
2
8
9
3
4
5
Each color
(each tone)
White (each tone)
(continued on next page)