Daktronics CH-1036H Manual de usuario descargar pdf (Pagina 20)

Maintenance & Troubleshooting

3-2

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

In a digit certain lamp always go on and off together. These groupings of lamps are known as

"segments". Each digit has eight segments, referred by letters A through H. Drawing A-

37685 illustrates these segments and shows which connector pin and wire color is wired to

each segment.

3.4 Schematic

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

Pwr/Sig Entrance, 1 Driver Display............. Drawing A-46755

Component Locations................................. Drawing A-51804

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

display and to the lamp driver. The component numbers correspond to those shown in

Drawings A-46755 and A-51804.

3.5 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

If a problem is observed in one digit, the cause may be isolated by swapping plugs on the

driver (connect the plug from the digit into a different jack). If the same digit shows the same

problem, the cause may be in the digit or the wiring. If the problem moves to another digit,

then the cause is probably an internal driver problem.

Use a volt meter at driver inputs to determine if power is being supplied to the driver. An

ohmmeter can be helpful in finding broken wires and bad connections. Internal electronic

problems must be correct by Daktronics or an authorized service center.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 26

Comentarios a estos manuales

Sin comentarios

Daktronics CH-1036H Manual de usuario Pagina 20

Comentarios a estos manuales

Relacionado con productos y manuales para Monitores Daktronics CH-1036H