NOTE : The subsequent test steps 5. thru 10. must be done in 30 seconds or
____
 less.

R 7. On the circuit breaker panel 121VU:
 - open the circuit breakers
 HYDRAULIC/LGCIU/SYS2 2GA (Q35)
 and HYDRAULIC/LGCIU/SYS1/GND
 SPLY 52GA (Q34).

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 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
R  8. On the circuit breaker panel 49VU: 
- open the circuit breaker L/G/LGCIU/SYS1/NORM 1GA (C09). 
R  9. In the cockpit, on the panel 50VU:
 - push the SVCE INT OVRD pushbutton switch 15RJ. 
R  10. 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 
- release the INT/RAD selector switch. 
R  11. On the circuit breaker panel 121VU:
 - close the circuit breakers HYDRAULIC/LGCIU/SYS2 2GA (Q35) and HYDRAULIC/LGCIU/SYS1/GND SPLY 52GA (Q34). 
R  12. On the circuit breaker panel 49VU:

In the FWD electronics compartment andat the FWD attendant station, zone 221:
-a communication between the FWDelectronics compartment and the FWD attendant station, zone 221, is not possible.
In the cockpit, on the panel 50VU:
-
the integral light of the SVCE INTOVRD pushbutton switch comes on.

In the FWD electronics compartment andin the cockpit at the boomsets:

-
the voice and the reply is correctand clear.

-make sure that no 400Hz interference is heard.
NOTE : A small audible 400Hz
____ interference is permitted.
In the cockpit, on the panel 50VU:
-the integral light of the SVCE INTOVRD pushbutton switch goes off.
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 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
- close the circuit breaker L/G/LGCIU/SYS1/NORM 1GA (C09). 
R  13. Do the test steps 3. and 4. again for all other maintenance interphone jacks. 
R  14. In the cockpit, on the captains ACP 2RN1: 
- push the CAB pushbutton switch. 
- push the CAB rotary switch and turn it fully counterclockwise. 
R  15. On the captains jack panel 61VU:
 - disconnect the boomset. 
R  16. At the related maintenance interphone jack: 
R R R - disconnect the boomset. 
5. Close-up________
 Subtask 23-44-00-860-051

In the cockpit, on the captains ACP2RN1:
-
the integral light of the CABpushbutton switch goes off.

-
the integral light of the CAB rotaryswitch goes off.

In the cabin at all AIP 320 RH:
-the SERVICE INT IN USE message goes off.
A. Put the aircraft back to its initial configuration.
 (1)
 De-energize the CIDS (Ref. TASK 23-73-00-862-001).

 (2)
 De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

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__________________________________________________________________
 TASK 23-44-41-000-003
 Removal of the Maintenance Interphone Jack (4000RJ1, 4000RJ2)
 WARNING : BE CAREFUL WHEN YOU WORK ON THE ENGINE COMPONENTS IMMEDIATELY AFTER
_______ THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS CAN STAY HOT FOR UP TO ONE HOUR.
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
R No specific warning notice No specific access platform 2 m (6 ft. 7 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
23-44-41-991-400 Fig. 401
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