Christie DS Series Service Manual page 21

The projector does not start up /
the light source does not light.
Not lighting
What is the status of
indicators?
Others
Check a pattern of LED indicator.
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
A
LWU900-DS/LHD878-DS/LWU755-DS
Service Manual
LWU900-DS / LHD878-DS / LWU755-DS
YES
Is the problem
solved after re-attaching
UPPER CASE?
NO
Replace MAIN PCB.
1:[E805]:HEAT SINK FAN 1
2:[E806]:HEAT SINK FAN 2
3:[E807]:HEAT SINK FAN 3
4:[E808]:HEAT SINK FAN 4
5:[E801]:PANEL DUCT FAN R
6:[E802]:PANEL DUCT FAN G
7:[E803]:PANEL DUCT FAN B
8:[E804]:PANEL DUCT FAN PBS
9:[E809]:POWER PCB FAN 1
10:[E810]:POWER PCB FAN 2
11:[E811]:PHOSPHOR WHEEL FAN
Is the problem
YES
solved after re-inserting
cable (CNLPW)?
NO
Replace any of the following:
Light source unit (LD failure)
POWER UNIT CIRCUIT (MAIN/SUB)
MAIN PCB
Is the problem
YES
solved after re-inserting
FFC cable of PHOSPHOR
WHEEL (EW71)?
NO
Replace either of the following:
Light source unit (PW failure)
MAIN PCB
Power on after opening
UPPER CASE.
Measure voltage of E800.
1pin (approx. 17V or 12V)
5pin (approx. 5V)
9pin (approx. 17V or 12V)
BAD
Power off, and measure
resistance after removing E800.
Between 1pin and 2pin,
5pin and 6pin, 11pin and 13pin
OPEN
Replace
POWER UNIT CIRCUIT(MAIN).
Execute the following procedure step by step:
1. Check external air temperature and altitude
2. Check that intake vent/exhaust vent are 50cm or more away from surrounding wall.
3. Check if intake vent is clogged.
→If it is dirty, clean it by using a vacuum cleaner.
4. Replace a faulty part
2 : Internal temperature error
Replace internal air temperature sensor.
3 : External temperature error
Replace external air temperature sensor.
4 or 5 : LD temperature error
Are there any damages on heat pipes?
Is light source in failure?
Are there any problems with wiring of LD temperature sensor and MAIN PCB?
→If not replace Light source unit.
6 : Phosphor wheel temperature error
Is light source in failure?
Are there any problems with wiring of phosphor wheel temperature
sensor and MAIN PCB?
→If not replace Light source unit.
Completed
20
OK
0
Replace MAIN PCB
or DRIVE PCB.
A
020-001586-01 Rev. 1 (02-2021)
LIT MAN SERV DS Series