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4. Troubleshooting check list of an SLite tile
4.2 No image on an SLite tile.
Check list:
Situation
SLite tile has no power.
SLite tile receives no data.
Controller unit receives no data from the
resync-unit.
Controller unit has no power.
LED drivers receive no data from the
controller unit.
LED drivers have no power.
No sync present on the incoming signal.
Red LED on the resync-unit flashes.
SLite SMPS doesn't start up.
Internal fans do not turn.
The "+15V" red LED doesn't lights up
while the internal fans still turns.
The +15V power supply on the power
distribution unit is overloaded due to a
short circuit on one of the LED drivers.
The "+8V" red LED flashes while the
internal fans still turns.
The +8V power supply on the power
distribution unit has "hiccups" due to a
short circuit somewhere inside the SLite
tile.
Malfunction of the power distribution unit.
Both red LED's on the power distribution
unit does not light up but the internal fans
still turns.
14
Solution
1.
Plug in the power cords and lock the plug holder clamps firmly.
2.
Switch on the main power to the SLite tiles.
3.
Be sure the power source is energized.
Plug in the data cables and lock the plug holder clamps firmly.
Check if the flat cable between the re-sync unit and controller is plugged in.
Check if the 8 pins yellow cable between the power distribution unit and controller
unit is plugged in.
Check if the flat cables between the LED drivers and the controller unit are
plugged in.
Check if all black power cables between the power distribution unit and the LED
drivers are plugged in.
1.
Make sure that the digitizer works properly and the correct input slot is
selected.
2.
Be sure a proper input signal is applied to the selected input slot of the
digitizer.
3.
Try an other input slot of the digitizer. If the problem remains, check the
operation of the digitizer.
1.
Be sure the internal power cable between re-sync unit and SMPS is plugged
in.
2.
Place a jumper link on JP1 of the SMPS to start up the SMPS without ON
signal from the resync-unit. In case the SMPS starts-up, noticeable by
the internal fans which turns, replace the resync-unit (see page 25) and
remove the jumper link from the SMPS. Otherwise replace the SMPS unit
(see page 26).
1.
Disconnect all power connections to the LED drivers. When the +15V red
LED doesn't lights up replace the power distribution unit (see page 26) else
go on with the next solution.
2.
Try to power up the LED drivers one by one by placing back the black power
cables. Do this from bottom LED driver to top LED driver and from left to right
until the +15V red LED doesn't lights up. Replace the last connected LED
assembly which make the +15V supply overloaded. See page 25.
1.
Disconnect all power connections to the LED drivers and controller unit.
When the +8V supply has "hiccups" again replace the power distribution unit
(see page 26) else go on with the next solution.
2.
Place the power connection back between controller unit and power
distribution unit (8 pins yellow wire unit) to power up the controller. In case
the +8V supply starts to "hiccup" again replace the controller unit (see page
26) else go on with the next solution.
3.
Try to power up the LED drivers one by one by placing back the black power
cables. Do this from bottom LED driver to top LED driver and from left to right
until the +8V supply starts to "hiccup" again. Replace the last connected LED
assembly which make the +8V supply to "hiccup". See page 25.
Replace the power distribution unit. See page 26.
R5976621 SLITE DISPLAY 02/09/2005
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