Daktronics CH-1036V Manual de usuario descargar pdf (Pagina 18)

Maintenance &

Troubleshooting

3-2

3.3 Digit Segmentation

Reference Drawing: Segments, 4x7 Lamp Matrix Digit.................. Drawing A-37685

Refer to Drawing A-37685. In a digit, certain lamps always go on and off together. These

groupings of lamps are knows as segments. Each digit has eight segments, referred to by

letters A through H.

3.4 Fuses

Reference Drawing: Lamp Driver, 16 Col. w/ Fan.......................... Drawing A-37070

Refer to Drawing A-37070. The lamp driver has 17 fuses. There is one fuse to protect each

digit circuit. F1 through F16 are type AGC-10 and are located near each output connector

under the driver’s metal cover. The other lamp driver fuse, F17, is type AGC-1/2 and it

protects the driver’s logic circuit and fan.

3.5 Schematic

Reference Drawing: Schematic, 1 Driver Display .......................... Drawing A-46754

The schematic diagram in Drawing A-46754 shows the power and signal inputs into the

display and to the lamp driver.

3.6 Troubleshooting

Observed Problem Possible Cause

One lamp won’t light

• Burned-out lamp

• Broken wire behind digit

Digit segment won’t light

• Broken wire

• Poor contact at driver connector

• Internal driver malfunction

Entire digit won’t light

• Broken wire (black)

• Poor contact at connector, pin 7

• Fuse blown in driver

Half the display won’t light

• Service breaker tripped

• Main fuse blown

• Poor contact at main power connection

• P18 disconnected

Entire display won’t light

• Power disruptions

• Poor signal connection

• Driver logic fuse blown

• Control not connected to display

• P20 disconnected

Segment stays lit

• Broken wire behind digit

• Internal driver malfunction

Garbled display

• Control malfunction

• Internal driver malfunction

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Daktronics CH-1036V Manual de usuario Pagina 18

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