Daktronics AB-1600-1.5,2.5 - Manual (Page 27)

Electrical Installation
3-11
3.9.2 Lamp Voltage
To test the lamp voltage:
1. Locate two modules which are powered by the same transformer.
2. Remove the lens and an ON lamp from any column numbered 6-10 from one
of the above modules (Figure 4).
3. Place a lamp in the lamp socket
of the lamp voltage tester and
insert the probe of the tester
into the lamp socket (Figure
5).
4. Place the probes of the voltage
tester leads into the holes of the
lamp voltage tester (Figure 6).
Record the lamp voltage
reading on the forms provided.
i
USE EXTREME CAUTION!
Do not short across the terminals of
the voltage tester. Doing so will
damage the module electronics.
5. The above steps should be repeated for at least two more modules.
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Figure 4: Removing An ON Lamp
Figure 6: Lamp Voltage Test With Volt Meter Figure 5: Lamp Voltage Tester