Leprecon VX Series Dimmer - Manual (Page 10)

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5.2. Test Switch
The proper connection and operation of the dimmer circuits can be tested without a control
console by using the Test switch. Pushing in the Test switch will turn on the dimmer channel to
allow lamps and load patching to be verified. Push the "Test" switch again to return it to the out
position, and turn the channel off again.
The "Test" switch is a hard wired function at the output stage of the dimmer. For this reason, the
"Test" switches will continue to operate even if the control electronics are disabled. This fail-safe
feature can be very important if the control console or dimmer electronics are disabled.
5.3. Output LED
This green LED is connected to the output of the dimmer circuit. When lighted, it indicates that
voltage is present at the load. Any condition that turns on the load will light the LED; Test switch
on, control signal present, or dimmer malfunction. In conjunction with the other indicator, the
Output LED can be used to troubleshoot system problems quickly.
5.4. No Load LED – VX Model Only
Each channel of the VX dimmer includes a "No Load" LED. When lighted it indicates a No Load
condition, whereas a lamp is disconnected or burned out.
Note: No-load indication is accurate only with the control signal below 90% and the "Test" switch
in the "Off" position.
6. Service and Maintenance
The VX and MX dimmer racks are designed to make troubleshooting and repair of the system fast
and easy. LED indicators are used to pinpoint problems to a defective module. The suspected
module can be removed without tools, and the system repaired in minutes by installing
replacement parts.
6.1. Recommended Service
VX and MX dimmers, like other dense-pack dimmers, needs an unrestricted supply of fresh, cool
air. The pack has been designed to operate at ambient temperatures up to 40 degrees Celsius, or
about 100 degrees Fahrenheit.