Barco SLite, Service Manual

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4. Troubleshooting check list of an SLite tile
4.4 No image on half SLite LED board
Check list:
Situation Solution
The factory calibration values in the
memory chip of the SLite LED board are
last. The SLite LED assembly must send back to Barco for reloading the calibration
values.
Replace the complete LED assembly. See page 25.
4.5 Swapped video content displayed on an SLite tile
Check list:
Situation Solution
The left LED drivers receive video content
for the right LED drivers and vice versa. Swap the two flat cables on the controller unit.
4.6 Dark and bright LED’s
Check list:
Situation Solution
A cluster of LED’s of the same color lights
up continuously or never lights up. Replace the LED assembly where this problem arise. See page 25
Several LED’s grouped in the same
column or row never lights up. Replace the LED assembly where this problem arise. See page 25
One green LED never lights up. Replace the green LED. Use the “DLite LED replacement kit” to do so (R9850560).
One blue LED never lights up. In case of an SLite 10 tile: The bleu LED is probably broken. Replace it. Use the
“DLite LED replacement kit” to do so
(R9850560).
In case of an SLite 14 tile: There is a failure with the “constant current drive” or
the blue LED is broken. Replace the LED driver (temporally) of the LED assembly
with a good working LED driver and check if the blue LED is working now. If the
LED is working place the original LED driver back and replace the complete LED
assembly (LED board + LED driver), see page 25. Otherwise replace the blue
LED with the “DLite LED replacement kit”
(R9850560) and place the original
LED driver back.
Two red LED’s of one pixel never lights
up while the red LED’s of the neighboring
pixels operate normally. In case of an SLite 10 tile: one or both LED’s are probably broken. Replace both
LED’s. Use the “DLite LED replacement kit” to do so
(R9850560).
In case of an SLite 14 tile: There is a failure with the “constant current drive”
or one of the LED’s is broken. Replace the LED driver (temporally) of the LED
assembly with a good working LED driver and check if the LED’s are working
now. If the LED’s are working place the original LED driver back and replace the
complete LED assembly (LED board + LED driver), see page 25. Otherwise
replace both LED’s with the “DLite LED replacement kit”
(R9850560) and place
the original LED driver back.
4.7 Fan fail.
The external fan is only activated in case the internal temperature exceed a specific temperature. The fan fail
detection on the external fan is only working in case the external fan is activated. The fan fail detection on the
internal fans works continuously.
16 R5976621 SLITE DISPLAY 02/09/2005