right. 3) The first officer's ADI does not show these values.

 (e)  
Set the ATTITUDE switch to the BOTH ON LEFT position.

 (f)  
Make sure that these occur: 1) The pitch display on the captain's and the first officer's ADIs reads 5 degrees pitch up.

 2)  The roll display on the captain's and the first officer's ADIs reads 45 degrees roll right.

 (g)  
Set the SYS DSPL switch on the ISDU to the R position.

 (h)  
Make sure that this occurs:

 1)  The ADIs do not read 5 degrees pitch up and 45 degrees roll right.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT EFIS ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (i)  
Set the ATTITUDE switch to the NORMAL position.

 (j)  
Make sure that these occur: 1) The pitch display on the first officer's ADI reads 5 degrees pitch up. 2) The roll display on the first officer's ADI reads 45

 degrees roll right. 3) The captain's ADI does not show these values.

 (k)
Set the ATTITUDE switch to the BOTH ON RIGHT position.

 (l)  
Make sure that these occur: 1) The pitch display on the captain's and the first officer's ADIs reads 5 degrees pitch up.

 2)  The roll display on the captain's and the first officer's ADIs reads 45 degrees roll right.

 (m)  
Release the DSPL SEL switch on the ISDU.

 E.  Restore Airplane to Normal
 S 864-032
 CAUTION:_______SOME SWITCHES MUST BE PULLED AND THEN TURNED. IF YOU TRY TO TURN THESE SWITCHES BEFORE YOU PULL THEM, YOU CAN DAMAGE THEM.
 CAUTION: TURN THE TWO SWITCHES ON THE MSU TO THE OFF POSITION.
_______ FAILURE TO TURN THE SWITCHES OFF CAUSES A HORN IN THE NOSE WHEEL WELL TO START.
 (1)  
Turn the two switches on the MSU to the OFF position.

 (2)  
Set the ATTITUDE switch to the NORMAL position.

 (3)
Remove the IRU cooling if it is not necessary (AMM 21-58-00/501).

 S 864-030

 (4)  
Remove the electrical power if it is not necessary
 (AMM 24-22-00/201).

 S 864-025
 S 864-027
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 COMPASS TRANSFER RELAY - REMOVAL/INSTALLATION
_____________________________________________
 1.  General_______
 A.  This procedure contains two tasks. The first task is for the removal of a compass transfer relay. The second task is for the installation of a compass transfer relay.
 B.  The two relays are installed on the E1-2 shelf in the main equipment center. Compass transfer relay No. 2, R14, is installed above compass transfer relay No. 1, R15 (Fig. 401).
 C.  Compass transfer relay No. 1 is the same as compass transfer relay No. 2.
 TASK 34-28-94-004-001
 2.  Compass Transfer Relay Removal______________________________
 A.  Access
 (1)  
Location Zone
 205 Electronic Compartment

 (2)  
Access Panels
 1201L Electronic Equipment Access Door

 B.  Procedure
 S 864-002
 (1)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6 Circuit Breaker Panel
 1) INSTR XFMR 2
 2) CAPT CMPS XFMR (ALT)
 3) DAA NO. 2 FMC
 4) DAA NO. 2 FMC AC
 5) DAA NO. 2 IRS AC
 6) DAA NO. 2 IRS DC

 (b)  
P18 Circuit Breaker Panel
 1) INSTR XFER
 2) INSTR XFMR 1
 3) F/O CMPS XFMR (ALT)
 4) DAA NO. 1 FMC
 5) DAA NO. 1 FMC AC
 6) DAA NO. 1 IRS AC
 7) DAA NO. 1 IRS DC

 (2)  
Remove the screws from the face of the relay.
　
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