Barco DP2K SLP Series Service Manual page 357

Code 20279: "LDM 1 – Not configured (initialization failure)"
Situation
Older or unsupported software
on Laser Driver Module
Wiring issue
Code 20280: "LDM 1 – Fan 1 speed too low"
Situation
Fan speed too low of one fan
of the Laser Driver Module
Error on both fans of the LDM.
Malfunction Control Board of
LDM.
Image 25-91
1 Fan 1
2 Fan 2
Code 20283: "LDM 1 – Fan 1 speed too high"
Situation
Fan speed too high of one fan
of the LDM
Fan speed error on both fans
of the LDM. Malfunction LDM.
Solution
Upgrade the software. See procedure "Software update via Communicator
(DC update companion)", page 249.
1. Check communication wiring between LDM and Laser Control Board
(connector J500). Make sure it is properly inserted.
2. If problem persists, replace the communication cable.
Solution
1. Check fan wire connection on the Controller Board of the LDM
(reference 1, Image 25-91).
2. Check if the fan is not blocked .
3. Malfunctioning fan. Replacement needed.
For removing and replacing the fan, see procedure "Removing a fan from
an LDM", page 51.
Replace the LDM. See service procedure "Replacing a Laser Drive
Module", page 56.
Solution
1. Malfunctioning fan. Replacement needed. Remove the fan from the
LDM and replace the fan. See service procedure "Removing a fan from
an LDM", page 51.
2. If problem persist replace the LDM. See service procedure "Replacing
a Laser Drive Module", page 56.
Replace the LDM. See service procedure "Replacing a Laser Drive
Module", page 56.
Troubleshooting
2 1
R5906848 /04 DP2K SLP Series 357