Daktronics DF-12xx Manual de usuario descargar pdf (Pagina 31)

Maintenance and 3-9

Troubleshooting

Power On Self-Test:

A useful troubleshooting tool is the power on self-test the host driver performs every

time it powers up:

• If the signal wiring between each controller is correct, the first two digits of

each driver will display “Ad” momentarily, and the first digit will then flash

three numbers indicating the decimal address that is set with the address

plug in J19. (If a client driver displays “A <number>,” followed by “P

<number>,” it is not receiving “signal in,” and is performing its own self-

test.)

• Next, the first two digits of each line will display “Lx”, where “x” is the

line number that the driver is set to control (set with address plug).

• Finally, each line will display “1234…” according to the column number of

each of its digits. Every line should show “1” on the left-most digit, and all

digits should be numbered consecutively from left to right. If this is not the

case, either the wrong address plug is installed, or the driver or digit harness

is connected incorrectly.If there is no address set (or address plug installed)

in the host driver, the host driver will display “E5,” and all client drivers

will continually cycle through the power on self-test.

3.6 Replacement Parts

Refer to the following table for Daktronics replacement parts.

Description

Daktronics

Part No.

Driver, 4-column MASC, LED 0P-1192-0068

Light sensor P-1279-203

Protocol plug (Protocol 4) 0A-1279-0089

Power supply, 24 V DC, 150 W A-1720

Transformer, Pri. 115V; Sec. 10 VCT @1.2A T-1072

Transformer, wall pack (for DataMaster 100 and

signal converter)

T-1118

Address #1 Plug 0A-1150-0122

Communication Boards and Accessories

Signal surge suppression board 0P-1110-0011

Modem, RS232 coated, internal, 0P-1279-0003

J-box, signal converter, w/modem 0A-1279-0162

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 67 68

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Daktronics DF-12xx Manual de usuario Pagina 31