Daktronics PC-2002, Руководство пользователя

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Display Maintenance
12
5 Display Maintenance
Disconnect power before doing any repair or maintenance work on the display�
Permit only qualified service personnel to access internal display electronics.
Disconnect power when not using the display�
Display Components
The PC-2002 uses a single printed circuit board (PCB) that contains all of the electronics
needed to make this system work: digit LEDs, control processors, power input connectors,
horn, and other components. All switches, power systems, and input/output terminations
are connected to the PCB.
As shown in
Figure 9 , the PCB is attached to the front panel of the display. Refer to
Replacing the Digit/Driver Printed Circuit Board (p�13) for instructions on accessing and
replacing the PCB.
Screw
(HC-1489)
8-32 Nut
(HC-1354)
Transformer
(T-1082)
Printed Circuit Board
(Indoor: 0P-1153-0005)
Rear Panel
Front Panel
Spacer
(HE-1357)
Figure 9: PC-2002 Exploded View