Christie DS+750 User manual

DS+750
SERVICE MANUAL
020-000211-01

Multimedia Projector
SERVICE MANUAL
PRODUCT CODE
1 122 477 29 (KJ5KL)
Original Version
REFERENCE NO. SM5111097-00
FILE NO.
Model No. DS+750
U.S.A, Canada,
Europe
* Projection lens is optional.
Chassis No. 103-023106-01-00
Match the Chassis No. on the unit's back cover with the
Chassis No. in the Service Manual.
If the Original Version Service Manual Chassis No. does
not match the unit’s, additional Service Literature is re-
quired. You must refer to “Notices” to the Original Service
Manual prior to servicing the unit.
--
103-023106-01-00103-023106-01-00

DS+750 Service Manual
020-000211-01 Rev. 1 (06-2009)

-2-
Contents
SERVICE MANUAL....................................................... 1
Contents ........................................................................ 2
Safety Instructions......................................................... 3
Safety Precautions ..........................................................3
Product Safety Notice .....................................................3
Service Personnel Warning.............................................3
Specifications ................................................................ 4
Circuit Protections ......................................................... 5
Fuse.................................................................................5
Thermal switches (SW903, SW904) ...............................5
Mechanical sensor switches (SW902, SW1891).............6
Temperature sensors, wind sensors ...............................7
Power failure and fan lock detection ...............................8
Maintenance.................................................................. 9
Filter Instructions.............................................................9
Replacing the Filter Cartridge ....................................... 10
Resetting the Filter Counter .......................................... 11
Resetting the Scroll Counter ......................................... 11
Lamp Management ....................................................... 12
Lamp Replacement ....................................................... 13
Optional Color Wheel Installation.................................. 15
Cleaning the Optical Parts ............................................ 16
Security Function Notice ............................................. 17
Lens Mounting and Removing..................................... 18
Mechanical Disassembly............................................. 21
Mechanical disassembly flow chart...............................21
Mechanical disassembly ...............................................22
Adjustments................................................................. 37
Adjustments after Parts Replacement...........................37
Service Adjustment Menu Operation ............................38
Optical Adjustments .................................................... 39
Mirror adjustment ..........................................................40
Electrical Adjustment................................................... 41
Circuit Adjustments ....................................................... 41
Test Points and Locations .............................................45
Service Adjustment Data Table.....................................46
Chassis Description .................................................. 123
Chassis over view........................................................ 123
Boards Connection...................................................... 124
Troubleshooting......................................................... 125
No Picture.................................................................... 125
No Power..................................................................... 127
Fan Control System..................................................... 132
Temperature Abnormality ............................................133
Power Lens and Shutter System and Abnormality...... 134
Lamp Abnormality .......................................................135
Power failure detection system ...................................136
Diagnosis of Power Failure with RS-232C port........... 139
Indicators and Projector Condition .............................. 140
Serial Control............................................................. 143
Serial Control Interface ...............................................143
Control Port Functions............................................... 145
IC Block Diagrams..................................................... 148
Parts Location Diagrams........................................... 157
Mechanical Parts List ................................................ 163
Electrical Parts List.................................................... 165
Diagrams & Drawings.................................................. A1
Parts description and reading in schematic diagram ..A2
Schematic Diagrams ...................................................A3
Printed Wiring Board Diagrams................................. A15
Pin description of diode, transistor and IC ................A23
Note on Soldering......................................................A24
DS+750 Service Manual
020-000211-01 Rev. 1 (06-2009)

-3-
Safety Instructions
WARNING:
The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side
of the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is
identified with the line ( ) in the schematic diagram. For continued product safety and protection of per-
sonnel injury, servicing should be made with qualified personnel.
The following precautions must be observed.
Safety Precautions
1: An isolation transformer should be connected in
the power line between the projector and the AC
line before any service is performed on the projec-
tor.
2: Comply with all caution and safety-related notes
provided on the cabinet back, cabinet bottom, inside
the cabinet or on the chassis.
3: When replacing a chassis in the cabinet, always
be certain that all the protective devices are
installed properly, such as, control knobs, adjust-
ment covers or shields, barriers, etc.
DO NOT OPERATE THIS PROJECTOR WITHOUT
THE PROTECTIVE SHIELD IN POSITION AND PR
OPERLY SECURED.
4: Before replacing the cabinet cover, thoroughly
inspect the inside of the cabinet to see that no stray
parts or tools have been left inside.
Before returning any projector to the customer, the
service personnel must be sure it is completely safe
to operate without danger of electric shock.
Service Personnel Warning
Eye damage may result from directly viewing the light produced by the Lamp used in this equipment. Always
turn off Lamp before opening cover. The Ultraviolet radiation eye protection required during this servicing.
Never turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer
generates high voltages (15kV - 25kV) at its starts.
Since the lamp is very high temperature during units operation replacement of the lamp should be done at least
45 minutes after the power has been turned off, to allow the lamp cool-off.
Product Safety Notice
Product safety should be considered when a component replacement is made in any area of the projector.
Components indicated by mark in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is, therefore, particularly recommended that the replacement of there
parts must be made by exactly the same parts.
DS+750 Service Manual
020-000211-01 Rev. 1 (06-2009)

-4-
Specifications
This symbol on the nameplate means the product is Listed by Underwriters
Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety stan-
dards against risk of fire, casualty and electrical hazards.
Mechanical Information
Projector Type Multi-media Projector
Dimensions (W x H x D) 15.75” x 9.55” x 20.61” (400.0 mm x 242.5 mm x 523.5 mm)
Net Weight 43.65lbs (19.8 kg)
Feet Adjustment 0˚ to 5˚
DLP Chip
Projection System 0.95” Single DLP chip, High brightness color wheel x 2
Number of Pixels 1,470.000 pixels (1,400 x 1,050 dots)
Signal Compatibility
Color System PAL, SECAM, NTSC, NTSC4.43, PAL-M, and PAL-N
High Definition TV Signal 480i, 480p, 575i, 575p, 720p, 1035i, 1080p, and 1080i
Scanning Frequency H-sync. 15 kHz–120 kHz, V-sync. 48 Hz–120 Hz
Optical Information
Projection Lamp 330 W UHP lamp x 2
Interface
Input 1 DVI-D Terminal (Digital), Mini D-Sub 15-pin Terminal (Analog), HDMI
Input 2 BNC Type x 5 (VIDEO/Y/G, B/Pb/Cb, R/Pr/Cr, H/HV and V), S-Video
Input 3 Vacant
Input 4 Network Board
Monitor Output Mini D-sub 15 pin
Other Jacks Serial port in (D-sub 9), Serial port out (D-sub 9), USB port, and Wired Remote Jack
Power
Voltage and Power Consumption AC 100–120 V (9.2A Max. Ampere), 50/60 Hz (The U.S.A and Canada)
AC 200-240 V (4.4A Max. Ampere), 50/60 Hz (Continental Europe and The U.K.)
Operating Environment
Operating Temperature 41˚F–104˚F (5˚C–40˚C)
Storage Temperature 14˚F–140˚F (-10˚C–60˚C)
Remote Control
Battery AA or LR6 Type x 2
Operating Range 16.4’ (5 m/±30˚)
Dimensions 1.79” (W) x 1.03” (H) x 6.24” (D) (45.5 mm x 26.2 mm x 158.5 mm)
Net Weight 4.1 oz (117 g) (including batteries)
Accessories
Owner’s Manual (CD-ROM) Quick Reference Guide AC Power Cord
Remote Control and Batteries VGA Cable PIN Code Label
Cable covers (support cover & cover) Fixing bracket for power cord Rich color reproduction color wheel x 2
Ferrite core (for LAN cable) Strap x 2 Cable tie x 3
Real Color Manager Pro (CD-ROM)
LThe specifications are subject to change without notice.
DS+750 Service Manual
020-000211-01 Rev. 1 (06-2009)

-5-
Fuse
Cover
Holder
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-
jector, it will automatically turn off by operating one of the following protection circuits.
Circuit Protections
A fuse is located at bottom of the projector. When the
POWER/LAMP indicators are not lightning, the fuse may be
opened. Check the fuse as following steps.
The fuse should be used with the following type;
Fuse Part No. : 323 028 4202
TYPE 15.0A 400V FUSE
SOC CORP. SHV14 15A N4
How to replace the fuse
1. Turn the projector upside down and remove the bottom
cover.
2. Remove the cover and fuse from fuse holder.
To install the fuse, take reversed step in the above.
There are the thermal switches (SW903 and SW904) inside of the projec-
tor to detect the internal temperature rising abnormally. When the internal
temperature reaches near 80˚C, the thermal switch opens to cut off the error
detection signal supplied to the system control part and then the projector will
set in the power failure mode.
The thermal switch will automatically return to normal condition when the
internal temperature becomes normal.
Thermostat
(SW903)
Thermostat
(SW904)
Fuse
Thermal switches (SW903, SW904)
DS+750 Service Manual
020-000211-01 Rev. 1 (06-2009)

-6-
Circuit Protections
Mechanical sensor switches (SW902, SW1891)
Filter cartridge switch
(SW1891)
Lamp cover switch
(SW902)
Filter cartridge
This projector provides 2 mechanical sensor switches, the one is for filter cartridge switch (SW1891) and the other
one is for lamp cover switch (SW902). The filter cartridge switch detects whether the filter cartridge is installed cor-
rectly.
The lamp cover switch detects whether the lamp cover is closed securely. If lamp cover is opened or not closed com-
pletely, the drive signal to the lamp circuit is cut off. After opening the lamp cover for replacing the lamp ass’y, place
the lamp cover correctly otherwise the projector cannot turn on.
POWER
LAMP
WARNING TEMP.
WARNING FILTER
SHUTTER
LAMP 1 REPLACE
LAMP 2 REPLACE
CAUTION
DO NOT LEAVE THE PROJECTOR WITH THE AC POWER CORD
CONNECTED UNDER AN ABNORMAL CONDITION. IT MAY RE-
SULT IN FIRE OR ELECTRIC SHOCK.
Indicators
The projector is shut down; and the LAMP indicator is lighting
and other indicators are blinking.
When the projector detects an abnormal condition (SW902, SW903, SW904
- opens), it will be automatically shut down to protect the inside of the projec-
tor and the LAMP indicator lights on and other indicators blink. In this case,
unplug the AC power cord and check that the filter cartridge and lamp cover
are installed securely, and the plug it, and turn on the projector once again to
verify operation. If the projector cannot be turned on and these indicators are
still lighting and blinking, unplug the AC power cord. See the troubleshooting
chapter.
LAMP indicator lights on
and other indicators blink.
DS+750 Service Manual
020-000211-01 Rev. 1 (06-2009)

-7-
POWER
LAMP
WARNING TEMP.
WARNING FILTER
SHUTTER
LAMP 1 REPLACE
LAMP 2 REPLACE
The projector provides 3 temperature sensor ICs, 2 sensors on the Main board and 1 sensor on the Sensor board,
and 1 wind sensor on the intake duct. The sensor ICs monitor surrounding temperature of the optical parts, and
surrounding temperature of the intake duct, and the wind sensor monitors airflow passed through the air filter in the
intake duct.
- Temperature sensor (IC8821) is on the main board for monitoring the surrounding temperature of DMD module.
- Temperature sensor (IC1381) is on the main board for monitoring the surrounding temperature of optical unit.
- Temperature sensor (IC8811) is on the sensor board for monitoring the surrounding temperature of the intake
duct.
- Wind sensor (S901) on the filter box.
Circuit Protections
IC8821
(Behind)
Temperature sensors, wind sensors
S901
Wind sensor
IC8811
The projector is shut down and the WARNING TEMP. indicator is
blinking red.
When the temperature inside the projector reaches a certain level, the projec-
tor will be automatically shut down to protect the inside of the projector. The
LAMP indicator turns red brighter and the WARNING TEMP indicator blinks
while the projector is being cooled down. When the projector has cooled
down enough (to its normal operating temperature), it can be turned on again
by pressing the ON/STAND-BY button.
Note:
• The WARNING TEMP. indicator continues to blink even after the temperature
inside the projector returns to normal. When the projector is turned on again, the
WARNING TEMP. indicator stops blinking.
Indicators
WARNING TEMP.
blinking red
IC1381
DS+750 Service Manual
020-000211-01 Rev. 1 (06-2009)

-8-
POWER
LAMP
WARNING TEMP.
WARNING FILTER
SHUTTER
LAMP 1 REPLACE
LAMP 2 REPLACE
The projector provides the detection circuits of the power failure and the fan lock. When the detection circuit detects
an error at the power supply line or at the fan operation circuit, the projector will turn into the standby mode to protect
the other circuits defective.
Circuit Protections
Power failure and fan lock detection
CAUTION
DO NOT LEAVE THE PROJECTOR WITH THE AC POWER CORD
CONNECTED UNDER AN ABNORMAL CONDITION. IT MAY RE-
SULT IN FIRE OR ELECTRIC SHOCK.
Indicators
The projector is shut down; and the LAMP indicator is lighting
and other indicators are blinking.
When the projector detects an abnormal condition (Power supply lines failure
or fans failure), it will be automatically shut down to protect the inside of the
projector and the LAMP indicator lights on and other indicators blink. In this
case, unplug the AC power cord and plug it, and then turn on the projector
once again to verify operation. If the projector cannot be turned on and these
indicators are still lighting and blinking, unplug the AC power cord. See the
troubleshooting chapter.
LAMP indicator lights on
and other indicators blink.
DS+750 Service Manual
020-000211-01 Rev. 1 (06-2009)