S 014-053
 (2)  Do the tasks in the steps that follow, as necessary, to get access to the relays.
 (a) Airbore Vibration Monitor Signal Conditioner Removal
 (AMM 77-31-03/401). ú (b) Selcal Decoder Unit Removal (AMM 23-28-11/401).
 (c) IRS Transfer Relay Removal (AMM 34-28-92/401)
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737-300/400/500MAINTENANCE MANUAL
 S 024-007
 (3)  Do these steps to remove the FMCS transfer relay:
 (a)  
Disconnect the electrical connector from the applicable FMCS transfer relay.

 (b)  
Remove the screws from the bracket.

 (c)  
Remove the FMCS transfer relay.

 TASK 34-62-51-404-008
 3.  FMCS Transfer Relay Installation________________________________
 A. References
 (1)  
AMM 23-28-11/401, Selcal Decoder Unit

 (2)  
AMM 24-22-00/201, Electrical Power - Control

 (3)  
AMM 34-28-92/401, IRS Transfer Relay

 (4)  
AMM 77-31-03/401, Airborne Vibration Monitor Signal Conditioner

 B. Access
 (1)  
Location Zone
 205 Electronic Compartment

 (2)  
Access Panel
 1201 Electronic Equipment Access Door

 C. Procedure
 S 864-009
 (1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  
P18-2 Circuit Breaker Panel
 1) FMCS CMPTR No. 1

 (b)  
P6-1 Circuit Breaker Panel
 1) FMCS CMPTR No. 2
 2) FMCS XFER

 S 014-010
 (2)  Do these tasks as necessary:
 (a)  
Airborne Vibration Monitor Signal Coditioner Removal (AMM 77-31-03/401)

 (b)  
Selcal Decoder Unit Removal (AMM 23-28-11/401)

 (c)  
IRS Transfer Relays Removal (AMM 34-28-92/401)

 S 424-014
 (3)  Install the FMCS transfer relay:
 (a)  
Put the FMCS transfer relay in the applicable bracket.

 (b)  
Install the screws.

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737-300/400/500MAINTENANCE MANUAL
 (c)  Connect the applicable electrical connectors to the FMCS transfer relay.
 S 414-054
 (4)  Do these tasks as necessary:
 (a)  
Airborne Vibration Monitor Signal Coditioner Installation (AMM 77-31-03/401)

 (b)  
Selcal Decoder Unit Installation (AMM 23-28-11/401)

 (c)  
IRS Transfer Relays Installation (AMM 34-28-92/401)

 D. Prepare for the FMCS Transfer Relay Test
 S 864-015
 (1)  
Supply the electrical power (AMM 24-22-00/201).

 S 864-016

 (2)  
Make sure the BAT switch on the pilots' forward overhead panel is in the ON position.

 S 864-017

 (3)  
Make sure the STANDBY POWER switch on the pilots' forward overhead panel is in the AUTO position.

 S 864-018

 (4)  
Make sure the FMCS Source Select Switch on the pilots' forward overhead panel is in the NORMAL position.

 S 864-020

 (5)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P18-2 Circuit Breaker Panel
 1) FMCS CMPTR No. 1

 (b)  
P6-1 Circuit Breaker Panel
 1) FMCS CMPTR No. 2
 2) FMCS XFER

 E. FMCS Transfer Relay Test
 S 864-034
 (1)  Open this circuit breaker:
 NOTE: Make sure this cicuit breaker has been closed for at least 15
____
 seconds.

 (a)  Panel P18
 1) FMCS CMPTR No. 1

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH DUAL FMC ú
　
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