9-6
The “LAMP TEST” push-button on the Operator Interface is used to determine local lamp
(LED) failures within the system. LEDs on the 4100U-S1 Operator Interface and Switch/LED
Display Modules illuminate. All segments on the LCD also change to squares. Perform the
following procedures to determine LED or LCD failures.
1. Press the “LAMP TEST” push-button. All LEDs should illuminate (LEDs should stay
illuminated as long as the push-button is depressed). Holding the push-button in for more
than 3 seconds will test the buzzer.
2. Perform an individual lamp test on all remote LCD annunciators using the key switch on
the remote annunciator.
3. If you find defective lamps/LEDs, contact your local Tyco Service provider.
Lamp Test
Procedure
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