Barco DP2K-12C Service Manual page 58

4. Troubleshooting
Code 5471: "lamp cathode fan - voltage high" (Warning)
Situation
Malfunction Fan Control board or
SMPS board.
Code 5472: "lamp cathode fan - voltage too low" (Error)
This error code is probably proceeded by the warning code 5473: "lamp cathode fan - voltage low". The same troubleshooting table
can be applied.
Code 5473: "lamp cathode fan - voltage low" (Warning)
Situation
Malfunction Fan Control board or
SMPS board.
Damaged insulation of the wire
unit (reference 1 image 4-30)
of the Cathode fan (reference 3
image 4-30).
Malfunction Signal Backplane (bad
connection)
1
Image 4-30
Cathode fan connections
54
Solution
Measure on the Signal Backplane the +24V voltage on pin 9, 10, 11 or 12 of the
connector of the black wire unit which comes from the SMPS board. See image 4-26.
If the measured voltage is about 24V then replace the Fan Control board. See
"Removing a board in the card cage", page 213. Otherwise replace the SMPS board.
See"Replacement of the Switched Mode Power Supply", page 281.
Solution
Measure on the Signal Backplane the +24V voltage on pin 9, 10, 11 or 12 of the
connector of the black wire unit which comes from the SMPS board. See image 4-26.
If the measured voltage is about 24V then replace the Fan Control board. See
"Removing a board in the card cage", page 213. Otherwise replace the SMPS board.
See"Replacement of the Switched Mode Power Supply", page 281.
To Check the insulation of the wire unit of the Cathode fan, pull out the wire unit
(reference 1 image 4-30). The Cathode fan is located at the right inner side of the Lamp
compartment.
1. Repair the insulation of the wire unit using shrink sleeve.
2. If not repairable replace the Cathode fan. See "Lamp cathode fan", page 319.
Replace the Signal Backplane. See "Replacement of the signal back plane", page 231.
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R5905043 DP2K-12C/11CX 19/02/2018