Daktronics PC-2002, Руководство пользователя

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Display Maintenance
13
Replacing the Digit/Driver Printed Circuit Board
1� To access the digit/driver PCB, use a Phillips screwdriver to remove the 10 outer
screws and separate the front and rear panels of the display.
2� Disconnect all plugs from the PCB by squeezing together the locking tabs and pulling
the connectors free. It may be helpful to label the cables or take a picture to know
which plug goes to which jack when connecting the replacement PCB.
3� Remove the 8 nuts securing the PCB to the front panel of the display. Take note of
the orientation of the PCB for future reference.
4� Carefully remove the PCB from the studs and spacers on the front panel. Use an even
force to prevent any damage that might result from bending the LEDs or connector
pins on the board.
5� Position the new PCB over the studs, making sure there are spacers between the front
panel and circuit board.
6� Tighten the 8 nuts.
7� Reconnect all plugs to their mating jacks on the PCB. The connectors are keyed and
will attach in one way only. Do not force the connections.
8� Close and secure the rear panel with 10 screws, then power on and test the display
to verify the issue has been resolved.
Schematics
For advanced troubleshooting and repair, it may be necessary to consult the schematic
drawing. DWG-187843 and Drawing A-1041025 show detailed power and signal wiring
diagrams of internal display components.
Replacement Parts
The following table contains display components that may require replacement. Many of
the other display components will have attached part number labels.
Description Part Number
Indoor PCB 0P-1153-0005
Surface Mount Hardware 0A-1153-0412
12 V Buzzer DS-1487
Transformer, 120 VAC T-1082
5-pin to 6-pin Radio Adapter W-2913
Refer to Section 6: Daktronics Exchange and Repair & Return Programs (p�14) for
information on exchanging or returning parts.