Christie DWU851 User manual

DWU851/DHD851/DWX851
Service Manual
020-000755-01

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Multimedia DLP Projector
November 2014
DWU851
(DD1-WU70P/71P)
DHD851
(DD1-HD70P/71P)
DWX851
(DD1-WX70P/71P)
SERVICE MANUAL
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
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.
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radiation and materials, various measures are provided in this Multimedia DLP Projector.
Be sure to read cautionary items described in the manual to maintain safety before servicing.
Caution
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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), power unit (ballast) and power unit (cooling), after turn on the projector.
4. Do not touch the exhaust fan, during operation.
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Service Warning
1. Features------------------------------------------------------3
 6SHFL¿FDWLRQV -----------------------------------------------4
3. Names of each part---------------------------------------- 5
4. Adjustment---------------------------------------------------7
5. Troubleshooting -------------------------------------------11
6. Service points--------------------------------------------- 25
7. Disassembly/assembly diagram---------------------- 50
8. Replacement parts list---------------------------------- 92
9. RS-232C communication------------------------------101
%ORFNGLDJUDP--------------------------------------------116
11. Connector connection diagram----------------------118
12.Basic circuit diagram-----------------------------------120
Contents
1

2
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
CAUTION FOR SAFETY
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zEntries with graphical symbol explanation
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CAUTION
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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.
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Follow those notes and the User's Manual - Sefty Guide.
Avoid electric shock.
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unplug when disassembling or assembling.
The projector has high voltage portion and possibly charged portion. If you touch such a
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Use the components which have same characteristic especially about incombustibility
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WKHFRPSRQHQWVPDUNHGZLWK in the replacement parts list and circuit diagram.
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Keep same style of wiring and components.
This product uses insulating tapes or tubes, and has some components assembled
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Do safety inspection after repair work.
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Measure the insulation resistance with megohmmeter after visual inspection. If the
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CAUTION
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
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
1. Features
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Not only can you control and monitor the projectors via LAN connection, but also project still or
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wireless adapter.
> 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
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accessories.
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> PbyP (Picture by Picture), PIP (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.
> HDCR
Advanced feature which is original image stabilizer for a clearer image.
> HDBaseT™ covered
Gives one more digital interface to get clearer pictures on a screen.
> Dual color wheel
Equips with two color wheels, to enhance brightness and color.
> Optional lenses
The wide range of lens shift feature will give more various installing.

4
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
6SHFL¿FDWLRQV
Panel
Panel system Digital Mirror Device
Panel size DWU851: 0.67" (17.0mm)
DHD851/DWX851: 0.65" (16.5mm)
Number of pixels DWU851: 1920(H) x 1200(V) DHD851: 1920(H) x 1080(V)
DWX851: 1280(H) x 800(V)
Lamp 330W UHP x 2
Digital
video signal HDMI 1Signal type: T.M.D.S
Signal level: DC 3.3V±5%, AC 0.15-1.56Vp-p
2
DVI-D
Computer
signal
COMPUTER IN 1(Dsub) 9LGHR$QDORJ9SSȍWHUPLQDWLRQ H/V. sync.: TTL level (positive/negative)
Composite sync.: TTL level
2(BNC)*5
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Composite sync.: TTL level
Video signal
VIDEO (BNC) System: NTSC, PAL, SECAM, PAL-M/N, NTSC4.43, PAL60 (out of guarantee)
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COMPUTER IN
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2(BNC)*5
HDBaseT*1 (RJ45) Signal type: PAM16
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SDI (BNC)*4 6'6',6LQJOHOLQN+'6',*6',/HYHO$
RS-232C CONTROL (Dsub) Input: “H” Max. 20V Min. 2.6V, “L” Typ. –20.0V Max. 0.8V
Output: “H” Typ. 8.0V Min. 5.0V, “L” Typ. –7.0V Max. –5.0V
Service ports (USB-B) *2 Differential signal: (D+)-(D-)>0.2V and D+>2.0V or (D-)-(D+)>0.2V and D->2.0V Input: “L” 0.8V or less, “H” 2.0V or more,
Output: “L” 0.3V or less, “H” 2.8V~3.45V
Wireless LAN
*3 WIRELESS (USB-A)
System: IEEE802.11b/g/n
(See the user's manual of the optional USB wireless adapter.)
Differential signal: (D+)-(D-)>0.2V and D+>2.0V or (D-)-(D+)>0.2V and D->2.0V
Input: “L” 0.8V or less, “H” 2.0V or more,
Output: “L” 0.3V or less, “H” 2.8V~3.45V
Wired LAN HDBaseT*1 (RJ45) System: 100Base-T
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LAN*1 (RJ45) System: 100Base-TX / 10Base-T
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Power supply AC110-120V/8.8A, AC220-240V/4.3A
Power consumption AC110-120V/860W, AC220-240V/810W
Dimensions 537 (W) x 174 (H) x 463 (D) mm (not including protruding parts)
Weight DSSUR[NJQRWLQFOXGLQJOHQV
Temperature range
Operation: 0~50°C
(NORMAL mode: 0~45°C, ECO mode: 0~50°C, high altitude (regardless the
"mode"): 0~40°C)
Storage: -20~60°C
Accessories Remote control x1 User’s manual x 1 Application CD x 1 Security label x 1 Adapter cover x 1 Power cord x 3 or 1
Computer cable x 1 Cable tie x 2
Ferrite core and band x 2
*1 DC power cannot be provided from these ports.
*2 The service USB-B port is hidden behind the side panel (USB-B COVER).
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*4 DHD851 only
*5 DWU851 and DWX851 only

5
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
(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), (16) LAMP-2 indicator
(13), (17) LAMP-1 indicator
(14) TEMP indicator
(15) POWER indicator
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(1) Dust protector (2) Remote sensors
(3) Elevator feet (x2) (4) AC (AC inlet)
(5) Holes for Cable Tie (6) Security slot
(7) Security bar (8) Control panel
(9) Status Monitor (10) Ports
(11) Indicators ,QWDNHYHQWV
(13)~(15) Exhaust vents (14) LAMP1 COVER*
(15) LAMP2 COVER*
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zProjector unit
zControl panel, Indicators
NOTE:
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because it includes a fan motor.
(16)
(1)
(3) (2)
(4)
(5)
(6)
(7)
(8)
(9) (10) (11) (12)
(11)
(13)
(14)
(15)
SHUTTER
(5)
(8)
(1)
(3)
(4)
(6)
(2)
(7)
POWER
TEMP
LAMP 1 LAMP 2
SECURITY
SHUTTER
FILTER
(15) (14) (13) (12) (11) (10) (9)
LAMP 2 LAMP 1
(17) (16)
zPorts
DWU851/DWX851
DHD851
(2)
(1)
(3) (4) (5) (6) (7) (8)
(9)
(10) (11) (12) (13)
(2)
(1)
(3) (4) (5) (6) (7) (8)
(9)
(10) (11) (12) (13)
(1) MONITOR OUT port
(2)・DWU851/DWX851
COMPUTER IN1 port
・DHD851
COMPUTER IN port
(3) HDMI 2 port
(4) HDMI 1 port
(5) DVI-D port
(6) HDBaseT™ port
(7) WIRELESS port
(8) LAN
(9)・DWU851/DWX851
COMPUTER IN2 port
(R/Cr/Pr,G/Y,B/Cb/Pb,H, V)
・DHD851
SDI/DIGITAL 1 port
(10) CONTROL port
(11) REMOTE CONTROL IN port
(12) REMOTE CONTROL OUT port
(13) VIDEO port

6
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
NOTE:
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(1) STANDBY button (2) ON button
(3) ID - 1 / 2/ 3/ 4buttons
(4) COMPUTER 1 button (5) COMPUTER 2 button *
(6) VIDEO button
(7) LAN button (8) USB TYPE A button *
(9) USB TYPE B button *
(10) HDBaseT button (11) DIGITAL 1 button
(12) DIGITAL 2 button * (13) HDMI 1 button
(14) HDMI 2 button
(15) DVI-D button (16)
FOCUS +/ - buttons
(17) LENS MEMORY SAVE / LOAD buttons
(18) ZOOM + / -buttons
(19) LOCK button (20) LENS SHIFT button
(21) SHUTTER button (22) ENTER button
ŸźŻŹFXUVRUEXWWRQV FREEZE button
(25) MENU button (26) HDCR button
(27) ASPECT button (28) PbyP button
(29) RESET button (30) C.WHEEL button
(31) AUTO button (32) OSD button
(33) MAGNIFY buttons (34) PICTURE button
(35) KEYSTONE button (36) LAMP button
(37) MY BUTTON - 1,2,3,4buttons
(38) Battery cover (39) Wired remote control port
zRemote control
%DFNRI
the remote
control
(38)
(39)
(1)
(3)
(4)
(7)
(8)
(10)
(13)
(14)
(16)
(19)
(20)
(22)
(2)
(5)
(6)
(9)
(11)
(12)
(15)
(18)
(17)
(21)
(23)
(25)
(26)
(24)
(27) (28)
(29)
(30)
(31) (32)
(33)
(34)
(35)
(36)
(37)
・DWU851/DWX851
(2) ON button
(5) COMPUTER 2 button
(7) LAN button
(9) USB TYPE B button *
(11) COMPONENT button *
(13) HDMI 1 button
(15) DVI-D button
(19) LOCK button
(21) SHUTTER button
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(25) MENU button
(27) ASPECT button
(29) RESET button
(31) AUTO button
(33) MAGNIFY buttons
(35) KEYSTONE button %DFNRI
the remote
control
(1)
(3)
(4)
(7)
(8)
(10)
(13)
(14)
(16)
(19)
(20)
(22)
(2)
(5)
(6)
(9)
(11)
(12)
(15)
(18)
(17)
(21)
(23) (38)
(25)
(39)
(26)
(24)
(27) (28)
(29)
(30)
(31) (32)
(33)
(34)
(35)
(36)
(37)
・DHD851
(1) STANDBY button
(3) ID - 1 / 2/ 3/ 4buttons
(4) COMPUTER 1 button
(6) COMPUTER 3 button *
(8) USB TYPE A button *
(10) HDBaseT button
(12) VIDEO button
(14) HDMI 2 button
(16)
FOCUS +/ - buttons
(17) LENS MEMORY SAVE / LOAD button
(18) ZOOM + / -buttons
(20) LENS SHIFT button
(22) ENTER button
(24) FREEZE button
(26) HDCR button
(28) PbyP button
(30) C.WHEEL button
(32) OSD button
(34) PICTURE button
(36) LAMP button
(37) MY BUTTON - 1,2,3,4buttons
(38) Battery cover
(39) Wired remote control port

7
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
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 4-5 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)
INDEX
DELAY
(Chap.4-3)
LENS
SHIFT
(Chap.4-4)
ENGINE ass’y
(ASS’Y) ×○○
MAIN PCB
(PWB ASS’Y MAIN) ○○○
LAMP UNIT
(LAMP UNITASS'Y) ×××
SENSOR-A/B PCB
(PWB ASS’Y SENSOR-A/B) ○××
BALLAST FAN
(DC FAN G10D13BPWM-P4L301) ○××
○: means need for adjustment. ×: means not need for adjustment. △: 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.
7XUQLQJRIIWKHNH\VWRQHIXQFWLRQ3UHVVWKH
KEYSTONE button and select KEYSTONE. If you
changed KEYSTONE from ON to OFF, set to ON
after adjustment.
4. 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.
5. 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.

8
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
When you replaced the MAIN PCB, SENSOR-A/
B PCB or BALLAST FAN, or when you re-
DWWDFKHGRQHRIWKH%$//$67+2/'(5VPDNH
sure to carry out this adjustment after
re-assembling the projector and cleaning the air
¿OWHU
A-SENS bar
A-SENS >>EXE 1:xxxx 2:xxxx 3:xxxx 4:xxxx END
Adjustment procedure
1. Display the A-SENS bar with the Ÿand ź
buttons in FACTORY MENU - VID-AD1.
2. Press the Źbutton to run automatic adjustment
program. The cell END is highlighted in about 5
PLQXWHVDIWHUWKHDGMXVWPHQW¿QLVKHG
3. When one of the values in the cell is out of
SURSHUUDQJHVHHEHORZFKHFNWKHSRVLWLRQDQG
connection of each part.
1: 3700 ~ 4900 2: 3400 ~ 4400
3: 3000 ~ 3850 4: 2550 ~ 3250
4-2 AIR SENSOR adjustment
Test pattern for the adjustment
CW-BRI bar
CW-BRI 139
CW-CLR bar
CW-CLR 338
(You do not have to care the numbers in these
menus.)
Adjustment procedure
1. Open the ADVANCED MENU and set the
COLOR WHEEL in IMAGE SETTINGS menu to
BRIGHT.
2. Open the FACTORY MENU and display the CW-
%5,EDUZLWKWKHŸDQGźEXWWRQVLQ)$&725<
MENU - DLP.
3.
0RYHWKHFXUVRUWRWKHFHOORQWKHULJKWDQGWDNH
notes of the values when horizontal stripes appear
as both of increasing and decreasing the value.
4. Set the value in the middle of the values.
Ex.: The horizontal stripes appear at the value X
as increasing the value and the value Y as
decreasing, set the value to (X+Y)/2.
5. Open the ADVANCED MENU and set the
COLOR WHEEL in IMAGE SETTINGS menu to
RICH COLOR.
6. Open the FACTORY MENU and display the CW-
&/5EDUZLWKWKHŸDQGźEXWWRQVLQ)$&725<
MENU - DLP.
7. Set the value in the same way as CW-BRI, step 3
and 4.
4-3 INDEX DELAY adjustment
Red (255/255)

9
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
When you replaced the ENGINE assembly
or MAIN PCB, make sure to carry out this
adjustment after re-assembling the projector.
LENS_C bar
(You do not have to care the numbers in this menu.)
Example 1
LENS_C >>EXE T:xxx B:xxx L:xxx R:xxx NG
Example 2
LENS_C >>EXE T:168 B:802 L:281 R:803 OK
Example 3
LENS_C >>EXE T:err B:823 L:306 R:778 NG
Adjustment procedure
1. Display the LENS_C bar with the Ÿand ź
buttons in FACTORY MENU - OPTION. (Example
1)
2. Press the Źbutton to run automatic adjustment
program.
NOTE: During this adjustment, the lens
automatically moves vertically and horizontally.
3. The right-most cell is highlighted after the
DGMXVWPHQW¿QLVKHG&KHFNWKHVWDWXV2.RU1*
displayed in the cell.
OK: The adjustment was successful. (Example 2)
NG: The adjustment was failed. Go to the next
step. (Example 3)
&KHFNWKHIROORZLQJV$IWHUWKHFRQ¿UPDWLRQRU
WKHUHZRUNFDUU\RXWWKHDGMXVWPHQWDJDLQ
+DUQHVVHVDUH¿UPO\FRQQHFWHGWRWKH
connectors EM00, EM01, EM04 and EJ20 on
the MAIN PCB.
- None of objects or wires is pinched between the
LENS SHIFT MECH and the lens.
NOTE: Find the cell in which “err” is displayed,
and read the left-most letter (T, B, L or R) in the
cell. It shows the area where the adjustment was
failed.
T: Between the top side frame of LENS SHIFT
MECH and lens body
B: Between the bottom side frame of LENS
SHIFT MECH and lens body
/%HWZHHQWKHDLU¿OWHUVLGHIUDPHRI/(16
SHIFT MECH and lens body
R: Between the lamp-side frame of LENS SHIFT
MECH and lens body
4-4 LENS SHIFT adjustment

10
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
zAdjusting the zoom and focus
1.
The ZOOM or FOCUS dialog will appear when you press any of the
buttons from ZOOM,ZOOM -,
ZOOM +,FOCUS + and FOCUS -.
2. Use the ZOOM + / - buttons to adjust the screen size.
3. Use the FOCUS + / - buttons to focus the picture.
zAdjusting the lens position
Press the LENS SHIFT button. The LENS SHIFT dialog will appear. Using the
ŸźŻŹEXWWRQVZKLOHWKHGLDORJLVGLVSOD\HGVKLIWVWKHOHQV*HQHUDOO\
better image quality can be got when the lens is set to the center. Press the
LENS SHIFT button again to exit the LENS SHIFT function.
zCENTERING
Press the ENTER or INPUT button while the dialog is displayed to
execute the CENTERING feature, which adjusts the lens to the center. A message
GLDORJLVGLVSOD\HGIRUFRQ¿UPDWLRQ3UHVVLQJWKHŹbutton performs CENTERING.
You can also perform CENTERING in the standby mode by pressing the FUNCTION
and LENS SHIFT buttons on the control panel for 3 seconds at the same time.
4-5 Setup of the projector
zLENS MEMORY This projector is equipped with memory functions for
the lens adjustments (ZOOM, FOCUS, LENS SHIFT and LENS TYPE).
Up to 3 sets of adjustments can be stored.
To utilize the lens memory feature, press the LOAD or FUNCTION but-
ton while the LENS SHIFT dialog is displayed, or press Ÿbutton while
the ZOOM or FOCUS dialog is displayed. Then the LENS MEMORY
dialog will appear. The current lens adjustments are displayed on the
“CURRENT” line. The adjustments already stored in the lens memory
are displayed on the lines of SAVE and LOAD-1 to 3.
<SAVE>
Toutilize the save lens memory feature, press the Źbutton while
CURRENT is selected on LENS MEMORY dialog or press the SAVE button
on the remote control. To store the current lens adjustments, select one of
the "SAVE" options numbered 1 to 3 (number of the lens memory) and press
WKHŹRUENTER button, while LENS MEMORY OSD is displayed.
Remember that the current data being stored of a memory will be lost by
saving new data into the memory.
<LOAD>
To recall stored adjustments, select one of the "LOAD" options numbered 1 to 3 (number of the lens
PHPRU\DQGSUHVVWKHŹRUENTER button, while LENS MEMORY OSD is displayed.
5HPHPEHUWKDWWKHFXUUHQWDGMXVWHGFRQGLWLRQZLOOEHORVWE\ORDGLQJGDWD,I\RXZDQWWRNHHSWKHFXUUHQW
adjustment, please save it before performing a LOAD function.
<CLEAR LENS MEMORY>
7RFOHDUWKHDGMXVWPHQWVWRUHGLQDOHQVPHPRU\VHOHFW&/($5/(160(025<DQGSUHVVWKHŹRU
ENTEREXWWRQZKLOH/(160(025<26'LVGLVSOD\HG3UHVVWKHŹEXWWRQ$PHVVDJHGLDORJLVGLVSOD\HG
IRUFRQ¿UPDWLRQ3UHVVWKHŹEXWWRQDJDLQWRFOHDUDOORIWKHOHQVPHPRU\
NOTE:
 While the lens is moving to the center, the menu will disappear and an hourglass icon will
DSSHDURQWKHVFUHHQ&(17(5,1*PD\WDNHVRPHWLPHWLOOWKHOHQVUHDFKHVWKHFHQWHU
7KHSURMHFWRUPD\LJQRUHRSHUDWLRQE\EXWWRQVZKLOHPRYLQJWKHOHQV
7KH&(17(5,1*IHDWXUHZKLOHWKHSURMHFWRULVLQWKHVWDQGE\PRGHLVGLVDEOHGLIWKH67$1'%<02'(
item of SETUP menu is set to POWER SAVE. Perform CENTERING before the projector's power is turned
off, or set the STANDBY MODE to NORMAL.
7KHDGMXVWDEOHUDQJHRI/(166+,)7YDULHVGHSHQGLQJRQWKHOHQVXQLWPRXQWHGRQWKHSURMHFWRUWR
maintain picture quality. Therefore LENS SHIFT adjustment may not reach the end of the indicator in the
dialog, and that is not a failure.
Following contents are also described in User's manual.
ZOOM + / -
buttons
FOCUS + / -
buttons
LENS SHIFT
button
FOCUS - / +
buttons
ZOOM button
FUNCTION
button
LENS SHIFT
button
NOTE:
The projector may ignore operation by other buttons while the lens is moving.
NOTE:
The projector may ignore operation by buttons while moving the lens.
FUNCTION button
LENS
MEMORY
button

11
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
(DWU851/DWX851)
7URXEOHVKRRWLQJ
Ŷ&KHFNSRLQWV
NOTE:
1) The picture above shows the inside of the projector after the UPPER CASE is removed.
To access the components of the INPUT PCB shown in the picture, you need to detach the MAIN
3&%EORFN
2) Wiring shown in this picture may differ from mass-products. Refer the chapter of “'LVDVVHPEO\
DVVHPEO\GLDJUDP´WRFKHFNWKHSURSHUZLULQJ
3) The component IS13 and IC02 are located on the reverse side of each PCB.
MAIN PCB
EL50 EP03
E302
EM04
LAMP2 SW. PCB
REMOTE-F PCB
LED PCB
EZ01
E807 EA05
EM00
EM05
EM08
EM06
EJ20
EM01
E308
E803
E804
ET01
ET02
E304
EM07
E306
DC RELAY
PCB
LAMP DOOR
RELAY PCB
E305
E802 E800 E801
E806 E301
EP05 EP02
IS02
IS05
IS01 IS04
IS06
IS13
EP12 EP10
EP11
EP01
ED01
ED02
ED04
ED08
ED09
ED05
ED07
ED06
ED03
IC02
INPUT PCB

12
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
INPUT PCB
IC02
LAMP2 SW. PCB
REMOTE-F PCB
LED PCB
DC RELAY
PCB
LAMP DOOR
RELAY PCB
MAIN PCB
ED01
ED02
ED04
ED08
ED09
ED05
ED07
ED06
ED03 EL50 EP03
E302
EM04
EZ01
E807 EA05
EM00
EM05
EM08
EM06
EJ20
EM01
E308
E803
E804
ET01
ET02
E304
EM07
E306
E305
E802 E800 E801
E806 E301
EP05 EP02
IS02
IS05
IS04
Ŷ&KHFNSRLQWV
NOTE:
1) The picture above shows the inside of the projector after the UPPER CASE is removed.
To access the components of the INPUT PCB shown in the picture, you need to detach the MAIN
3&%EORFN
2) Wiring shown in this picture may differ from mass-products. Refer the chapter of “'LVDVVHPEO\
DVVHPEO\GLDJUDP´WRFKHFNWKHSURSHUZLULQJ
3) The component IC02 is located on the reverse side of INPUT PCB.
EP12 EP10
EP11
EP01
(DHD851)

13
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
*: Be sure to unplug the power cord before measuring resistance.
(5): +14.3V
(7): GND
NO §0
Replace MAIN PCB.
or
Replace POWER UNIT CIRCUIT1.
Replace POWER UNIT CIRCUIT1.
or
Replace POWER UNIT COOLING.
or
Replace LAMP DOOR RELAY PCB.
2SHQRYHUN order)
§0
NG (open)
NO
5HSODFHWKHWKHUPDOVZLWFKIDLOHGLQDERYHFKHFN
§0
Open
Replace POWER UNIT CIRCUIT1.
(1) +16.8V (Normal STBY)
0V (Saving STBY)
(3) GND for (1)
(9) +5.4V
(19) GND
(20) +16.8V
YES
YES
Is
voltage
supplied at pins (5) and
(7) of E800 on the MAIN
PCB?
Power cannot turn on.
Measure
resistance* between
pins (5) and (7) of
E800.
Disconnect
TSW1 (CNTS1)
and TSW2 (CNTS2) from
the LAMP DOOR RELAY
PCB, and measure the
resistance.
Is
voltage
supplied at pins (1)
and (3), (9) and (19), (20)
and (19) of
E800?
Measure
the resistance*
between pins (1) and (3),
(9) and (19), (20) and
(19) of E800.
Replace MAIN PCB.
or
Replace POWER UNIT CIRCUIT1.
&KHFNWKHÀRZLQWKHQH[WSDJH
&OLFNVRXQGFDQEHKHDUG
No sound
Listen
carefully to the
sound from the POWER
UNIT COOLING while re-
plugging the cord
after 30 sec. YES
NO
Replace MAIN PCB.
or
Replace POWER UNIT CIRCUIT1.
Is
voltage supplied at
pins (9) and (19) of
E800?
Replace POWER UNIT CIRCUIT1.
or
Replace POWER UNIT COOLING.
(9) +5.4V (Normal STBY)
0V (Saving STBY)
(19) GND

14
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
Neither lamp lights.
COVER ERROR is detected.
OK
0V
NG Re-install LAMP UNITs and DOORs.
&KHFNLI
the LAMP UNITs and
DOORs are attached
correctly.
*: Be sure to unplug the power cord before measuring resistance.
0V Replace MAIN PCB.
Either is 1V or more.
5HSODFHWKH3&%IDLOHGLQDERYHFKHFN
E304: LAMP1 SW. PCB, E305: LAMP2 SW. PCB
Measure
voltage between pins
(1) and (2) of E304
and E305.
0Re-attach LAMP DOORs.
Open
Replace the LAMP DOOR RELAY PCB.
Measure
the resistance*
between pins (5) and (6)
of EP01 in the LAMP DOOR
RELAY PCB while the
switches are
closed.
1V or more
Measure
voltage between pins (5)
and (6) of E802.
Replace MAIN PCB.
or
Replace STATUS MONTOR.
YES
NO
Does
the Status Monitor
displaying any error
message?
The other of OTHER
OTHER
&KHFN
the error message
displayed in the Status
Monitor.
&KHFNHDFKÀRZDVEHORZ
COVER: COVER ERROR is detected.
LAMP: LAMP ERROR is detected.
TEMP: TEMPERATURE ERROR is detected.
FAN**: FAN ERROR is detected.
Replace ENGINE ass’y.

15
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
LAMP ERROR is detected.
OK
YES
NG
Replace LAMP UNITs.
TEMPERATURE ERROR is detected.
&1266NWRNȍ
&1,66WRȍ
&1,66NWRNȍ
5HSODFHWKH3&%IDLOHGLQDERYHFKHFN
CNOSS: SENSOR-A PCB
CNISS: SENSOR-B PCB
NG
OK Replace MAIN PCB.
Measure
the resistance
between pins of
harnesses CNOSS (ED04)
and CNISS (ED05) after
disconnecting them from
the DC RELAY
PCB.
NO Replace MAIN PCB.
NG Re-install LAMP UNITs.
OK Replace POWER UNIT CIRCUIT 1/2.
or
Replace POWER UNIT BALLAST 1/2.
or
Replace POWER UNIT COOLING.
&KHFNLIWKH
LAMP UNITs are installated
correctly.
Does
the voltage of
the pins (7) and (9) of
ET02 of MAIN PCB change
during warming-
up?
Try
replacing the LAMP
UNITs.
(7) LAMP1
(9) LAMP2

16
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
NO
FAN ERROR is detected.
5V or less
Replace MAIN PCB.
OK
Replace MAIN PCB.
OK
Replace LAMP UNIT.
about 12V
NG
NG
5HSODFHWKHIDQIDLOHGLQDERYHFKHFN
(8), (9): FAN1, (12), (13): FAN4
Measure
voltage at pins (9) and (13)
of E802.
Observe
the voltage waveforms
at pins (8) and (12) of
E802.
about 12V
5V or less Replace DC RELAY PCB.
NG
OK
Replace DC RELAY PCB.
5HSODFHWKHIDQIDLOHGLQDERYHFKHFN
ED08: FAN2, ED07: FAN3, ED03: FAN9, ED02: FAN10
Observe
the voltage
waveforms at pin (1) of
connectors*** for fans in
the DC RELAY
PCB.
2, 3, 9, 10
Try
replacing the LAMP
UNIT.
Is
voltage
supplied to the pin (2)
of connectors*** for fans in
the DC RELAY
PCB?
NG Replace POWER UNIT CIRCUIT2.
(5): +14.3V
(7): GND
Is voltage
supplied at pins (5) and
(7) of E801 on the MAIN
PCB?
1, 4
about 12V
5V or less Replace MAIN PCB.
Is voltage
supplied to the pin (2)
of connectors** for
fans?
&KHFN
the FAN number*
displayed in the Status
Monitor.
5, 6, 7, 8
NG
Re-attach LAMP DOORs. OK
&KHFNLIWKH
LAMP DOORs are attached
correctly.
**: E803, E804, E805, E808
OK Replace MAIN PCB.
NG
5HSODFHWKHIDQIDLOHGLQDERYHFKHFN
E803: FAN5, E804: FAN6,
E805: FAN7, E807: FAN8
Observe
the voltage
waveforms at pin (1) of
connectors** for
fans.
***: ED02, ED03,
ED07, ED08
*: FAN1: LAMP 1 EXHAUST FAN FAN2: LAMP 1 UP FAN
FAN3: LAMP 1 DOWN FAN FAN4: LAMP 2 EXHAUST FAN
FAN5: LAMP 2 UP FAN FAN6: LAMP 2 DOWN FAN
FAN7: POWER EXHAUST FAN FAN8: POWER INTAKE FAN
FAN9: BALLAST FAN FAN10:IRIS FAN

17
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
Replace IS04 : SN74LV14APW.
or
Replace IS02 : THS7327PHPR.
or
Replace MAIN PCB.
YES
NO
The image
has a problem though
the input signal is
detected.
Replace IS05 : EL8302IUZ.
or
Replace IS02 : THS7327PHPR.
or
Replace MAIN PCB.
Picture is not displayed correctly via COMPUTER IN port. (DHD851)
(DWU851/DWX851)
NO
Replace IS04 : SN74LV14APW.
or
Replace IS02 : THS7327PHPR.
or
Replace MAIN PCB.
YES
NG
YES
Replace IC02 : EL8302IUZ.
or
Replace MAIN PCB.
OK
Turn
on PbyP
or PIP and select
HDMI 1 as the sub area.
The picture on the main
area still has the
problem?
Try
whether
changing INPUT PCB can
¿[WKHSUREOHP
Replace IS06 : EL8302IUZ.
or
Replace INPUT PCB.
Replace IS01 : THS7327PHPR.
or
Replace MAIN PCB.
Others
The image
has a problem though
the input signal is
detected.
NO
YES
The
image via
COMPUTER IN2 has the
problem.
Replace IS05 : EL8302IUZ.
or
Replace MAIN PCB.
Picture is not displayed correctly via COMPUTER IN ports.

18
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
Picture is not displayed correctly via wired/wireless* LAN.
NO
Update the LiveViewer to the latest version.
YES
NO &KHFNWKHÀRZRQSDJH
YES
Can
communicate via wireless or
ZLUHGQHWZRUN"
*: The USB wireless adapter is needed to use wireless LAN.
&KHFNWKHVHFWLRQRITroubleshooting for other Network/USB problems
about other problems.
NO
YES
5HFRQQHFWDIWHU¿QLVK/LYH9LHZHURIRWKHU3&V
Is
total PC
connection number to
projector within
50?
Re-connect after disconnecting other projectors.
Is total
projector connection
number to a PC within
12?

19
DWU851(DD1-WU70P/71P) / DHD851(DD1-HD70P/71P) / DWX851(DD1-WX70P/71P)
DWU851/DHD851/DWX851
Service Manual
020-000755-01 Rev. 1 (11-2014)
Signal from MONITOR OUT port is not displayed correctly.
Picture is not displayed correctly via VIDEO port.
NO &KHFNWKHÀRZRQSDJH
YES
Can
the projector
display picture correctly
via COMPUTER IN
port?
Replace INPUT PCB.
NG
OK
Replace MAIN PCB.
Try
whether
changing INPUT PCB can
¿[WKHSUREOHP
Replace IS01: THS7327PHPR.
or
Replace IS02: THS7327PHPR.
or
Replace IS13: EL8302IUZ.
or
Replace MAIN PCB.
Replace IS02: THS7327PHPR.
or
Replace IC02: EL8302UZ.
or
Replace MAIN PCB.
or
Replace INPUT PCB.
(DWU851/DWX851)
(DHD851)