5. Troubleshooting
Code 7608: “Green DMD temp high” (Warning)
Situation Solution
Blocked fi lter of the Light Processor
compartment. The other DMD
temperatures are too high as well.
Ensure that the air inlets of the projector are not blocked. Replace a dirty filter with a
new one.
The liquid cooling circuit of the Light
Processor is not c onnected with the
main liquid cooling c ircuit. Most
likely the other DMD temperatures
are too high as well.
Check of the cooling circuit of the Light Proc essor is connected with the pump and heat
exchanger. See reference 1 & 2 image 5-17.
The wire unit of the temperature
sensor (NTC) of the DMD in the
GREEN channel is disconnected
from the Power Backplane.
Check if the w ire unit (reference 19 im age 5-18) of the temperature sen sor of the D MD in
the GREEN channel is connected with the power Distribution board.
The wire units of two temperature
sensors (NTC’s) have been
swapped. While the temperature of
one DMD is too high, the other w ill
most likely be too low.
Check if the wire units of all tempe rature sensors (NTC’s) are plugged in there respective
connector sockets on the Powe r Distribution board. See image 5 -18.
• Reference 16 image 5-18: Light P rocessor compartment ambient temperature
sensor.
• Reference 17 image 5-18: Temperature sensor DMD BLUE channel.
• Reference 18 image 5-18: Temperature sensor DMD GREEN channel.
• Reference 19 image 5-18: Tempera ture sensor DMD RED channel.
Malfunction Fan Control bo ard. Replace the Fan Control Board. See "Replacing the Fan control board", page 278.
Defect temperature sensor
(reference 18 image 5-20) which
measures the temperature of the
DMD of the GREEN channel.
Replace the temperature s ensor on the cooling block of the GREEN channel.
Code 7609: “Green DMD temp high” (Error)
This error code is probably preceded by the warning code 7608: “Green DMD temp high”. The same troubleshooting table can be
applied to.
Code 7610: “Green DMD temp open” (Error)
Situation Solution
The wire unit of the temperature
sensor (NTC) of the DMD in the
GREEN channel is disconnected
from the Power Distribution board.
Check if the w ire unit (reference 18 im age 5-18) of the temperature sen sor of the D MD in
the GREEN channel is connected with the power distributio
n board.
Damaged wire unit of the
temperature sensor (reference
18 image 5-20 and image 5-18)
which m easures the temperature of
the DM D of the GREEN channel.
Repair or replace the wire unit.
Defect temperature sensor
(reference 18 XXXX) which
measures the temperature of the
DMD of the GREEN channel.
Replace the temperature s ensor on the cooling block o
f the GREE N channel.
Code 7611: “Green DMD temp short” (Error)
Situation Solution
Damaged wire unit of the
temperature sensor (reference
18 image 5-20 and image 5-18)
which m easures the temperature of
the DM D of the GREEN channel.
Repair or replace the wire unit.
Defect temperature sensor
(reference 18 image 5-20) which
measures the temperature of the
DMD of the GREEN channel.
Replace the temperature s ensor on the cooling block of the GREEN channel.
R5905312 HDF W SERIES 24/01/2013 57
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