(3)
 Make sure there is a warning notice in the cockpit to tell persons not to start the APU.

 Subtask 49-61-34-865-062
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41

R  EFF : 001-049, 101-105, 107-107, 151-199, 49-61-34Page 409 201-210, Config-2 Aug 01/05
 CES

R  **ON A/C 001-049, 101-105, 107-107,
 Subtask 49-61-34-010-060-A
 C. Get Access
 (1)
 Make sure that the BULK cargo-compartment door 827 is open.

 (2)
 Make sure that the access platform is at the BULK cargo-compartment door 827.

 (3)
 Make sure that the access panel 162EW is removed (Ref. TASK 25-55-12-000-003).

 **ON A/C 151-199,
 Subtask 49-61-34-010-060-B
 C. Get Access
 (1)
 Make sure that the AFT cargo-compartment door 826 is open.

 (2)
 Make sure that the access platform is below the AFT cargo-compartment door 826.

 (3)
 Make sure that the access panel 152FW is removed (Ref. TASK 25-55-11-000-003).

 **ON A/C 201-210,
 Subtask 49-61-34-010-060
 C. Get Access
 (1)
 Make sure that the AFT cargo-compartment door 826 is open.

 (2)
 Make sure that the access platform is below the AFT cargo-compartment door 826.

 (3)
 Make sure that the access panel 152HW is removed (Ref. TASK 25-55-11-000-003).

R  EFF : 001-049, 101-105, 107-107, 151-199, 49-61-34Page 410 201-210, Config-2 Aug 01/05
 CES

R  **ON A/C 001-049, 101-105, 107-107, 151-199, 201-210,
 4. Procedure
_________ R **ON A/C 001-049, 101-105, 107-107,
 (Ref. Fig. 401/TASK 49-61-34-991-003-A)
 **ON A/C 151-199,

 (Ref. Fig. 401A/TASK 49-61-34-991-003-B)
 **ON A/C 201-210,

 (Ref. Fig. 401B/TASK 49-61-34-991-003) R **ON A/C 001-049, 101-105, 107-107, 151-199, 201-210,
 Subtask 49-61-34-420-053
 A. Installation of the ECB
 (1) Remove the blanking cap from the electrical connection (4).
 (2) Do an inspection of the component interface and/or the adjacent area. CAUTION: THE WEIGHT OF THE ELECTRONIC CONTROL BOX (ECB) IS 5.7KG (12.5LBS).
 (3)
 Put the ECB (3) in position on the tray (1).

 (4)
 Carefully push the ECB (3) to engage the electrical connection (4).

 (5)
 Make sure that the ECB (3) and the electrical connection (4) are fully engaged.

 (6)
 Move the fluted knobs (2) upwards to engage the feet (5) on the front face of the ECB (3).

 (7)
 Turn the fluted knobs (2) clockwise to tighten the ECB (3) in position on the rack (1). When the fluted knobs (2) are correctly tightened, the red marks on the threads are no longer seen.

R  EFF : 001-049, 101-105, 107-107, 151-199, 49-61-34Page 411 201-210, Config-2 Aug 01/05
 CES  Subtask 49-61-34-865-063

 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD.
 Subtask 49-61-34-740-076
 C. Do the APU SYSTEM SELF-TEST to make sure that the ECB and the APU LRU's are serviceable.
 (1)
 Set the CFDS to get the SYSTEM REPORT/TEST page for the APU. (Ref. TASK 31-32-00-860-001)

 (2)
 Do this test.

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the MCDU:  On the MCDU:
 - push the pushbutton adjacent to the SYSTEM SELF-TEST indication.  - the APU SYSTEM SELF-TEST page showsand the messageIN PROGRESS
 comes on.
 - if the test is satisfactory, the message TEST OK
 comes on.
 This indicates that all LRU's are
 serviceable.
 - if the test is not satisfactory, the name and the ATA reference number of
 the unserviceable LRU shows.
 - push the pushbutton adjacent to the RETURN display. - the APU menu page comes on.
 - push the pushbutton adjacent to the RETURN display. - the SYSTEM REPORT/TEST page comes on.
 - push the pushbutton adjacent to the RETURN display.  - the CFDS page comes on.
　
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