Daktronics BA-515, Руководство пользователя, Страница: 69 / 208

larger part of the keyhole and carefully lift it off the TNMC. Take care not to drop the
panel, and remember that the module controller is attached to the panel.
3.
Disconnect power from J17.
4.
Remove all power and signal connections from the board. Release “locked”
connectors by squeezing together the tabs, and then carefully pulling them from the
jack. Label the cables, indicating which cable was removed from which connector;
the labeling will be helpful when you replace the board.
5.
Remove the four nuts holding the board in place.
6.
Follow the previous steps in reverse order to install a new controller board.
Modules and Drivers
Reference Drawings: (for displays installed Prior to 11/29/05)
Exploded Front View; Single Panel Module ........................................... Drawing B-126111
Exploded Rear View; Single Panel Module ............................................ Drawing B-126112
The module and driver board are a single, functional unit. To remove a module, complete the
following steps:
1. The modules are attached to an
internal frame called the module
mounting panel. Find the latch-
access fasteners (referred to as
“latch plugs” on the drawings) on
the front of the module. One is
centered below the top row of pixels
and one is centered above the
bottom row. (They may be slightly
hidden by the louvers.)
TNMC Maintenance
65
2. Unlatch the latch fasteners,
illustrated in
Figure 19 , by turning
them a quarter-turn using a
7
/
32
" nut
driver. Turn the top latch clockwise
and the bottom latch
counterclockwise. Carefully remove
the module and detach the ribbon
cables. Label the cables, indicating which cable was removed from which connector;
the labeling will be helpful when replacing the board.
Figure 19: TNMC Module (Rear View)