Barco DP2K-12C Service Manual page 62

4. Troubleshooting
Situation
Short circuit or bad connection.
Damaged insulation of the wire unit
(reference 2 image 4-34) of the lower
fan (reference 1 image 4-34) for the
Card Cage electronics. The fan is
the lower fan located behind the dust
filter at the front of the projector.
Malfunction Signal Backplane (bad
connection)
2
1
Image 4-34
Card cage, lower fan connection
Code 5640: "lamp power supplies - zero lamp power supplies detected" (Error)
Situation
Main power cable disconnected
from the LPS unit (reference
1image 4-35).
Disconnected wire unit between
the Signal Backplane and the LPS
module (reference 2, LPS side and
reference 3 Signal backplane side
image 4-35).
Malfunction of one of the LPS
units. The red LED "ERR" of the
malfunction LPS unit flashes fast.
Defect Signal Backplane.
58
Solution
1. Check the Signal Backplane for bad connections. Ensure that all wire units are
well connected.
(Note that the +24V supply is generated on the SMPS board and enters the Fan
Control board and Cinema Control board via the Signal Backplane)
2. Check the wiring of the Anode fan for short circuits.
3. Check the wiring of the Cathode fan for short circuits.
Remove the dust filter at the front side of the projector and check the insulation of the
wire unit of the fan.
1. Repair the insulation of the wire unit using shrink sleeve.
2. If not repairable, replace the whole wire unit and/or fan. See "Card cage fans",
page 312.
Replace the Signal Backplane. See "Replacement of the signal back plane", page 231.
Solution
Check if the main power cable is connected with the "MAINS INPUT" socket of the
LPS unit.
Reconnect the wire unit between the Signal Backplane and the LPS module.
Replace the whole LPS module. See "Lamp power supply", page 283 or "Lamp power
supply (single module)", page 291.
Replace the Signal Backplane. See "Replacement of the signal back plane", page 231.
R5905043 DP2K-12C/11CX 19/02/2018