C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 150RH, 154RH, 155RH, 163RH, 167RH, 168RH
 Subtask 23-73-62-869-050
 D. Make sure that the Cabin Intercommunication Data System (CIDS) is
 energized (Ref. TASK 23-73-00-861-001).

 Subtask 23-73-62-710-050
 E. Do this operational test.
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the SIGNS panel 25VU:  In the related lavatory:
 -
set the SEAT BELTS switch to  - the RTS sign comes on.
 the ON position.

 -
set the SEAT BELTS switch to  - the RTS sign goes off.
 the OFF position.

 5. Close-up
________ Subtask 23-73-62-862-050
 A. De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).

R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-62Page 414 1201-299, 1May 01/05 1 1 1CES 1 **ON A/C ALL

 TASK 23-73-62-400-006 Installation of the LED Return To Seat-Sign
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. 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 23-73-62-991-006 Fig. 403
 3. Job Set-up
__________ Subtask 23-73-62-860-052
 A. Aircraft Maintenance Configuration
 (1)
 Make sure that aircraft electrical circuits are energized. (Ref. TASK 24-41-00-861-002).

 (2)
 Make sure that the service cabinet door is open.

 1EFF : ALL 1 23-73-62Page 415 1 1 May 01/05R 1 1 1CES 1

 Subtask 23-73-62-865-066
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
 -------------------------------------------------------------------------------
**ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 49VU COM/CIDS/DEU A ESS/LINE 2 155RH G05
 49VU COM/CIDS/DEU A ESS/LINE 1 154RH G04

R **ON A/C 106-149, 301-399, 401-499,
 49VU COM/CIDS/DEU A ESS/AFT R 172RH HA12 49VU COM/CIDS/DEU A ESS/AFT L 179RH HA11 49VU COM/CIDS/DEU A ESS/FWD R 158RH HA10 49VU COM/CIDS/DEU A ESS/FWD L 159RH HA09
 **ON A/C 001-049, 051-099, 101-105, 201-299,
 121VU COM NAV/CIDS/DEU A NORM/R AFT 168RH M13 121VU COM NAV/CIDS/DEU A NORM/L AFT 167RH M12 121VU COM NAV/CIDS/DEU A NORM/R MID 166RH M11 121VU COM NAV/CIDS/DEU A NORM/L MID 165RH M10 121VU COM NAV/CIDS/DEU A NORM/R FWD 164RH M09 121VU COM NAV/CIDS/DEU A NORM/L FWD 163RH M08

R **ON A/C 106-149, 401-499,
 121VU COM NAV/CIDS/DEU A NORM/R AFT 168RH M12
 121VU COM NAV/CIDS/DEU A NORM/L AFT 167RH M11

R **ON A/C 106-149, 151-199, 401-499,
 121VU COM NAV/CIDS/DEU A NORM/R FWD 164RH M10 121VU COM NAV/CIDS/DEU A NORM/L FWD 163RH M09
 1EFF : ALL 1 23-73-62Page 416 1 1 Aug 01/05 1 1 1CES 1 1EFF : ALL 1 23-73-62Page 417 1 1 May 01/05 1 1 1CES 1

R  -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------**ON A/C 151-199, 
R R R R  121VU COM NAV/CIDS/DEU A NORM/R AFT 121VU COM NAV/CIDS/DEU A NORM/L AFT 121VU COM NAV/CIDS/DEU A NORM/R MID 121VU COM NAV/CIDS/DEU A NORM/L MID  168RH 167RH 166RH 165RH  M14 M13 M12 M11
 **ON A/C 301-399, 
R  121VU COM NAV/CIDS/DEU A NORM/R FWD 121VU COM NAV/CIDS/DEU A NORM/L FWD  164RH 163RH  M11M10
 Subtask 23-73-62-865-072
 C. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------2001VU CIDS/DEU A NORM/ MID/ LH 197RH C04 2001VU CIDS/DEU A NORM/ MID/ RH 198RH C05 2001VU CIDS/DEU A NORM/ AFT/ LH 173RH C06 2001VU CIDS/DEU A NORM/ AFT/ RH 174RH C07
 **ON A/C ALL
 4. Procedure_________
 Subtask 23-73-62-420-057
　
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