Daktronics BA-515, Руководство пользователя, Страница: 68 / 208

Removing/Changing the Controller
Reference Drawings:
Component Locations; 832/848 Red/Amb LED, TNMC, G4 .................. Drawing A-257029
Exploded Front View; Single Panel Module ........................................... Drawing B-126111
Exploded Rear View; Single Panel Module ............................................ Drawing B-126112
Drawing A-257029 indicates the location of the TNMC controller for each of the TNMC
models. Figure 17 below illustrates a typical TNMC layout. Complete the following steps to
remove the controller from the display.
1.
To access the controller from the front, unlatch the latch fasteners on the front face
the LED module. Refer to
Drawings B-126111 and B-126112 . (The fasteners are
referred to as “latch plugs” on the drawings). One latch fastener is centered below
the top row of pixels and one is centered above the bottom row. They may be slightly
hidden by the louvers.
2.
Using a
7
/
32
" nut driver, turn each fastener a quarter-turn. Turn the top latch
clockwise and the bottom latch counterclockwise. Carefully remove the module and
detach the ribbon cables. It is helpful to label the cables to know which cable goes to
which connector when reattaching.
TNMC Maintenance
64
Note: To access
the controller
from the rear of
the TNMC, as
shown in
Figure
18 (on previous
page), remove
the appropriate
rear-access
panel from the
TNMC by loosening all four of the screws. Slide the access panel sideways to the
Figure 17: TNMC Internal Components (Modules Removed)
Figure 18: TNMC Rear Access