Daktronics S-100/S-200 - Manual (Page 34)

Maintenance &
Troubleshooting 4-7
Figure 37).
Fans (0.7" Display, 8 & 12 Lines Only)
In the 0.7" models, cooling fans are located near the
bottom of the cabinet of the 8 and 12 line displays (the
4 line displays do not contain fans). The fan filters
should be removed and rinsed with water periodically
to clean any dust or debris that may accumulate during
use. If a fan fails, it must be removed and replaced
with a new fan.
To remove a filter for cleaning, first disconnect the
fan’s power supply. The filter lies between the fan and
the finger guard.
Gently remove the finger guard (refer to Figure 38).
The filter will now be easily accessible. Rinse the filter
with warm water and allow it to dry before replacing it on the fan.
It is not recommended to operate the fan without
the filter or finger guard in place.
The fan can be removed by first taking off the finger
guard and filter. Each fan is held in place with four (4)
#6-32 by 1-1/2" long screws. Use a flat-head
screwdriver to remove the screws and release the fan
from the back sheet. Use the same screws to attach
the new fan. Replace the filter and finger guard.
Light Detector
A light detector is located near the top of the display in the right support flange for 0.7" displays,
and in the bottom left flange for 1.2" and 2.1" displays. The light detector is used to measure light
levels outside the display and, when enabled through the Venus 1500 software, adjusts the
brightness level of the LEDs appropriately.
The light detector is mounted on a support
flange. To replace the light detector, first
remove the #6 screws from the support flange
(refer to Figure 40).
Disconnect the light detector’s wire to the
display controller. The light detector is attached
to the support flange with #4 screws, standoffs
and nuts. Remove the failed light detector from
the support flange.
Figure 38: Removing Fan Finger Guard
Figure 39: Fan, Filter & Fan Cover
Figure 40: Removing the Light Detector