4. Procedure
_________
 Subtask 31-36-00-960-050

 A. Replacement of DMU Batteries R (Ref. Fig. 205/TASK 31-36-00-991-002)
 (1)
 Removal of the DMU batteries:

 (a)
 Loosen the 2 captive screws on the battery housing cover on the rear panel of the unit.

 (b)
 Remove the battery housing cover.

 (c)
 Remove the batteries.

 (2)
 Installation of the DMU batteries:

 (a)
 Put the new batteries into the space provided in the rear of the unit. Make sure the polarity (+/-) is correct.

 (b)
 Put the battery housing cover in the location provided on the rear of the unit.

 (c)
 Attach the 2 captive screws on the battery housing cover.

 5. Close-up
________
 Subtask 31-36-00-400-053

 A. Install the DMU (Ref. TASK 31-36-34-400-001).
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 Replacement of the DMU Batteries R Figure 205/TASK 31-36-00-991-002
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 B. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Close the access door 824. (Ref. TASK 52-41-00-410-002)

 (3)
 Remove the access platform(s). Subtask 31-36-00-710-072

 C.
 Operational test of the DMU (Ref. TASK 31-36-00-710-001).

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_____________________________________________________ R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210,
 TASK 31-36-00-710-001
 Test of the DMU (1TV)

 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002  Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 31-32-00-860-008 Procedure to Get Access to the SYSTEM REPORT/TEST/INST Page
 3. Job Set-up
__________
 Subtask 31-36-00-861-050

 A. Aircraft Maintenance Configuration
 (1)
 Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 (2)
 Energize the CFDS (Ref. TASK 31-32-00-860-008).

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 B. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU RCDR/ACCLRM 9TU K18 121VU AIDS/DMU 4TV K15
 4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-105,
 Subtask 31-36-00-710-052
 A. Do the DMU Fault Monitoring test. NOTE : If the PRINT> prompt shows on the MCDU display you can print the
____
 available information.

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the MCDU:
-
Push the line key adjacent to <CFDS indication.

 -
Push the line key adjacent to <SYSTEM REPORT/TEST indication.

-
Push the line key adjacent to INST> indication.

-
Push the line key adjacent to DMU> indication.

 -
Push line key adjacent to TEST> indication.

 -
Push the line key adjacent to <DMU POWER-UP TEST indication.

On the MCDU display:
-
The CFDS page comes into view.

-
The SYSTEM REPORT/TEST page comesinto view.

-
The SYSTEM REPORT/TEST - INST pagecomes into view.

-
The AIDS page comes into view.

-
The AIDS TEST page comes into view.

-
The message IN PROGRESS shows.

-After 4 seconds the message TEST OK shows.
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