Power-up and testing
EST3 Installation and Service Manual 6.15
pressing the ACK switch. Press the Connect switch. Verify
that the display indicates: “0 calls pending,” “1 calls
connected,” and the location of the connected call is
displayed in reversed text. Converse over the phone
connection to verify clear, noise free communications.
Take a second firefighter telephone on a different circuit
off-hook. Verify that the incoming call buzzer sounds, the
display indicates “1 Calls Pending,” the location of the
incoming call is displayed in reversed text, and “1 calls
connected” is shown in the display. Silence the buzzer by
pressing the ACK switch. Press the Connect switch. Verify
that the display indicates: “0 calls pending,” “2 calls
connected,” the location of the second connected call is
displayed in reversed text, the location of the first call is
displayed in normal text below the second call location.
Converse over the phone connection to verify clear, noise
free communications.
Press the Review Connected switch, moving the reversed
text to the first call’s location message. Without hanging up
the first telephone, press the Disconnect switch. Verify the
display indicates: 1 Calls Pending,” the location of the call
being disconnected is displayed in reversed text at the top of
the screen, and “1 calls connected” is shown in the display.
Hang up the first telephone. Verify that the display indicates:
“0 Calls Pending” and “1 calls connected.”
6. Repeat Step 5, connecting five (5) phones simultaneously,
and verify acceptable voice quality.
7. Press the All Call and Page by Phone switches on the 3-ASU
Audio Source Unit. When the Ready to Page LED lights
steady, speak into the telephone still connected, and verify
that the telephone’s audio is distributed throughout the
facility. Press the Disconnect switch on the 3-FTCU, and
hang up the master and remote phones.
8a. Class A telephone riser configuration: Disconnect the
telephone riser wiring (TB1-2 & TB1-2) or (TB1-3 &
TB1-4) from the 3-FTCU, and verify that a riser trouble
message appears in the Trouble queue. Take a firefighter
telephone off-hook (plug a phone in a phone jack). Verify
that the incoming call buzzer sounds, the display indicates “1
Calls Pending,” the location of the incoming call is displayed
in reversed text, and “0 calls connected” is shown in the
display. Restore the connection.
8b. Class B telephone riser configuration: Disconnect the
telephone riser wiring (TB1-1 & TB1-2) from the 3-FTCU,
and verify that a riser trouble message appears in the Trouble
queue. Restore the connection.
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