breaker 3HQ.

 4.
 Wait until the end of the test

5.
 Close-up

________
 Subtask 21-26-13-410-051
 A. Close Access
 (1) Close the access door 822.
The flight configuration is simulatedfor the ventilation system.On the aircraft skin, make sure that:
-
the skin air-inlet valve 15HQ isclosed.

 -
the small flap only of the skin air-outlet valve 22HQ is open (the main flap stays closed).

No change.
NOTE : This starts a full test of the
____ventilation system.
On the aircraft skin, make sure that:
 -
the skin air-inlet valve 15HQ is open.

 -
the skin air-outlet valve 22HQ is open.

 (2) Remove the access platform(s). Subtask 21-26-13-860-051
 B. Do the EIS stop procedure
 (Ref. TASK 31-60-00-860-002)

 Subtask 21-26-13-862-052
 C. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

 COMPUTER - AVIONICS EQUIPMENT VENTILATION (AEVC) (10HQ) - REMOVAL/INSTALLATION
______________________________________________________________________________
 TASK 21-26-34-000-001
 Removal of the Avionics Equipment Ventilation Computer (AEVC) (10HQ)
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE  QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific blanking caps
 No specific circuit breaker(s) safety clip(s)
 No specific access platform 1.60 m (5 ft. 3 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
24-42-00-861-001  Energize the Ground Service Network from the External Power
 **ON A/C 001-049, 051-099, 101-105, 151-158, 201-210,
 21-26-34-991-001 Fig. 401 R **ON A/C 106-149, 159-199, 211-299, 301-399, 401-499,
 21-26-34-991-001-A  Fig. 401A **ON A/C ALL

 3. Job Set-up
__________
 CAUTION : USE ONLY THE GROUND SERVICE NETWORK TO SUPPLY ELECTRICITY BECAUSE

_______ THE AVIONICS VENTILATION SYSTEM IS NOT SERVICEABLE. IF YOU ENERGIZE THE AIRCRAFT ELECTRICAL CIRCUITS WITHOUT THE VENTILATION SYSTEM YOU WILL CAUSE DAMAGE TO ELECTRICAL EQUIPMENT.
 Subtask 21-26-34-861-050
 A. Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 Subtask 21-26-34-865-050
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 6HQ D06 49VU AIR COND/AVNCS VENT/CTL 5HQ D05 122VU AIR COND/AVNCS/VENT/MONG 3HQ Y17
 Subtask 21-26-34-010-050
 C. Get Access
 (1)
 Put the access platform in position at the access door 824.

 (2)
 Open the access door 824.

 4. Procedure
_________
 **ON A/C 001-049, 051-099, 101-105, 151-158, 201-210,

 (Ref. Fig. 401/TASK 21-26-34-991-001) R **ON A/C 106-149, 159-199, 211-299, 301-399, 401-499,
 (Ref. Fig. 401A/TASK 21-26-34-991-001-A)

 Avionics Equipment Ventilation Computer (AEVC)
 Figure 401/TASK 21-26-34-991-001

R 1EFF : 001-049, 051-099, 101-105, 151-158, 1 21-26-34Page 403 1201-210, 1May 01/05 1 1 1CES 1

 Avionics Equipment Ventilation Computer (AEVC)
 Figure 401A/TASK 21-26-34-991-001-A

R 1EFF : 106-149, 159-199, 211-299, 301-399, 1 21-26-34Page 404 1401-499, 1Aug 01/05 1 1 1CES 1R **ON A/C ALL

 Subtask 21-26-34-020-051
 A. Removal of the AEVC
 (1)
 Loosen the nut (4).

 (2)
 Lower the nut (4).

 (3)
 Pull the AEVC (1) on its rack (3) to disconnect the electrical connector (2).

 (4)
 Remove the AEVC (1) from its rack (3).

 (5)
 Put blanking caps on the disconnected electrical connectors.

 TASK 21-26-34-400-001
 Installation of the Avionics Equipment Ventilation Computer (AEVC) (10HQ)

 1.
 Reason for the Job
　
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