(Ref. Fig. 401A/TASK 23-73-46-991-001-C)
 **ON A/C 151-199,

 (Ref. Fig. 401B/TASK 23-73-46-991-001-A)
 **ON A/C 301-399,

 (Ref. Fig. 401C/TASK 23-73-46-991-001-B) R **ON A/C 401-499,
R (Ref. Fig. 401D/TASK 23-73-46-991-001-D) **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 Subtask 23-73-46-020-051
 A. Removal of the DEU-A
 (1)
 Remove the locking springs (7) and disconnect the electrical connectors (2) and (3).

 (2)
 Push the locking catch (5) and carefully remove the DEU A (1) from the mounting bracket (6).

 (3)
 Put blanking caps on the disconnected electrical connectors.

R 1EFF : ALL 1 23-73-46Page 410 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 106-149, 301-399, 401-499,

 Subtask 23-73-46-020-051-A
 A. Removal of the Decoder/Encoder Unit (DEU) A
 (1)
 Do not disconnect the electrical connector (7) from the connection/termination box (4).

 (2)
 Release the spring latches (1) and disconnect the electrical connectors (2).

 (3)
 Release the nylatches (3) and remove the connection/termination box (4).

 (4)
 Make sure that you do not change the position of the coding switches and record them.

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

 (6)
 Release the nylatches (5) and remove the DEU A (6).

R 1EFF : 106-149, 301-399, 401-499, 1 23-73-46Page 411 1 1 Aug 01/05 1 1 1CES 1

 Decoder/Encoder Unit A Figure 401/TASK 23-73-46-991-001- 12 (SHEET 1)
R 1EFF : 001-049, 051-099, 101-105, 201-299, 1 23-73-46Page 412 1 1 Aug 01/05 1 1 1CES 1

 Decoder/Encoder Unit A Figure 401/TASK 23-73-46-991-001- 22 (SHEET 2)
R 1EFF : 001-049, 051-099, 101-105, 201-299, 1 23-73-46Page 413 1 1 Aug 01/05 1 1 1CES 1

 Decoder/Endcoder Unit A
 Figure 401A/TASK 23-73-46-991-001-C 
R 1EFF :  106-149,  1  23-73-46 Page 414 
1  1  Aug 01/05
 1  1
 1CES  1

 INTENTIONALLY BLANK

R 1 1

23-73-46Page 415
1 1 Aug 01/05 1 1 1CES 1

 Decoder/Encoder Unit A
 Figure 401B/TASK 23-73-46-991-001-A12 (SHEET 1)

R 1EFF : 151-199, 1 23-73-46Page 416 1 1 Aug 01/05 1 1 1CES 1

 Decoder/Encoder Unit A
 Figure 401B/TASK 23-73-46-991-001-A22 (SHEET 2)

R 1EFF : 151-199, 1 23-73-46Page 417 1 1 Aug 01/05 1 1 1CES 1

 Decoder/Endcoder Unit A
 Figure 401C/TASK 23-73-46-991-001-B 
R 1EFF :  301-399,  1  23-73-46 Page 418 
1  1  Aug 01/05
 1  1
 1CES  1

R  Decoder/Endcoder Unit A 
R  Figure 401D/TASK 23-73-46-991-001-D 
R 1EFF :  401-499,  1  23-73-46 Page 419 
1  1  Aug 01/05
 1  1
 1CES  1

 **ON A/C ALL
 TASK 23-73-46-400-001 Installation of the Decoder/Encoder Unit (DEU) A 200RH
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific stepladder 0.5 m (1 ft. 8 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
23-73-00-861-001 Energize the Cabin Intercommunication Data System (CIDS) 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
 **ON A/C 001-049, 051-099, 101-105, 201-299,
 23-73-46-991-001 Fig. 401 **ON A/C 106-149,
 23-73-46-991-001-C Fig. 401A
 1EFF : ALL 1 23-73-46Page 420 1 1 Aug 01/05R 1 1 1CES 1

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
**ON A/C 151-199,
 23-73-46-991-001-A
**ON A/C 301-399,
 23-73-46-991-001-B
R  **ON A/C 401-499,
R  23-73-46-991-001-D FOR FIN 200RH1, 200RH2 25-23-42-000-001 25-23-42-400-001
　
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