3. Job Set-up
__________
Subtask 23-44-00-865-050
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU L/G/LGCIU/SYS1/NORM 1GA C09 49VU COM/AUDIO/FLT/INTPH 9RN G08 49VU COM/AUDIO/ACP/F/O 5RN G07 49VU COM/AUDIO/ACP/CAPT 4RN G06
121VU COM NAV/SELCAL 8RN M04
R 121VU COM NAV/ACP/THIRD/OCCPNT 6RN M02 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34
Subtask 23-44-00-860-050
B. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
(2)
Energize the Cabin Intercommunication Data System (CIDS) (Ref. TASK 23-73-00-861-001).
(3)
Make sure that the aircraft is in ground condition (landing gear compressed).
(4)
Make sure that the INT/RAD selector switches of the Audio Control Panels (ACPs) are in the center position.
(5)
On the captain jack panel, connect the first of the two 600 ohms boomsets to the related connector.
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4. Procedure
_________ Subtask 23-44-00-710-050
A. Operational Test of the Service Interphone
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. In the cockpit, on the captains Audio Control Panel (ACP) 2RN1:
R R - push the CAB pushbutton switch.
- push the CAB rotary switch and turn it fully clockwise.
2. In the FWD electronics compartment:
R R - connect the second boomset to the maintenance interphone jack 1RJ.
In the cockpit, on the captains ACP2RN1:
-
the green integral light of the CAB pushbutton switch comes on.
-
the integral light of the CAB rotaryswitch comes on.
In the cabin, at all AttendantIndication Panels (AIP) 320RH:
-
the SERVICE INTERPHONE IN USE message comes on.(lower row)
NOTE : With some service interphone boomsets, it is necessary to key the
____In the FWD electronics compartment andin the cockpit at the boomsets:
microphone manually.
3. In the cockpit, on the captains ACP 2RN1:
- set and hold the INT/RAD selector switch in the RAD position.
- speak into the cockpit boomset and the boomset in the FWD electronics compartment.
R R R NOTE : You must hold the INT/RAD____ selector switch in the RAD position when you speak into the cockpit boomset.
-the voice and the reply is correctand clear.
-make sure that no 400Hz interference is heard.
NOTE : A small audible 400Hz
____ interference is permitted.
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-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
- release the INT/RAD selector
switch.
R
R 4. At the FWD attendant station, In the cabin, at the FWD attendant AIP
R zone 221: 320 RH the subsequent messages that
R follow come on:
R - lift the handset from the - upper row: #
R cradle. - lower row: SERVICE INTERPHONE IN USE.
R
R 5. At the FWD attendant station, In the cabin at FWD attendant AIP 320
R zone 221: RH the subsequent messages that follow
R come on:
R - push the SVCE INTPH pushbutton - upper row: SERV INT
R switch. - lower row: SERV INT IN USE
R
R 6. At the FWD attendant station, In the FWD electronics compartment and
R zone 221: at the FWD attendant station, zone 221:
R - push the PTT switch and speak - the voice and the reply through the
R into the handset. boomset and the handset is correct
R and clear.
R
- make sure that no 400Hz interference
is heard.
R NOTE : A small audible 400Hz____
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