15) AUTO FLIGHT CONT SYS B ENGAGE INTLK A
 16) AUTO FLIGHT CONT SYS B MAC TRIM AC
 17) AUTO FLIGHT CONT SYS B MACH TRIM DC
 18) AUTO FLIGHT CONT SYS B SNSR EXC AC
 19) AUTO FLIGHT CONT SYS B WARN LIGHT (BAT)
 20) AUTO FLIGHT CONT SYS B FCC DC

 NOTE: Make sure that you close the AFCS B FCC DC circuit
____
 breaker last.

 (b)  
P6-3 Circuit Breaker Panel 1) DIM AND TEST 2) SECONDARY

 (c)  
P18-1 Circuit Breaker Panel 1) AFDS AIL FORCE LIM 2) AFDS MCP DC 3) AUTO FLIGHT CONT SYS A ENGAGE INTLK A 4) AUTO FLIGHT CONT SYS A MAC TRIM AC 5) AUTO FLIGHT CONT SYS A MACH TRIM DC 6) AUTO FLIGHT CONT SYS A SNSR EXC AC 7) AUTO FLIGHT CONT SYS A WARN LIGHT (BAT) 8) AUTO FLIGHT CONT SYS A FCC DC

 NOTE: Make sure that you close the AFCS A FCC DC circuit
____
 breaker last.

 9) AUTOTHROTTLE AC
 10) AUTOTHROTTLE DC
 11) DME-1
 12) VHF NAV-1 VOR/LOC

 (d)  P18-2 Circuit Breaker Panel 1) CAPT RDDMI 2) CAPT RDDMI ALT 3) CAPT VSI 4) FMCS CDU NO. 1 5) DAA 1 - DC 6) DAA/FMC 1 - AC 7) DAA/FMC 1 - DC 8) DAA/IRS 1 - AC 9) EADI-L 10) EFIS CONT PANEL - L 11) EFIS SYM GEN-L 12) EHSI-L 13) FMCS CDU NO. 2 (if installed) 14) FMCS CMPTR 15) FMCS MODE ANN
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 16) F/O COMPASS XFMR (ALTN) 17) INSTRUMENT TRANSFER 18) INSTRUMENT XFMR-1 19) IRS 1 - AC 20) IRS 1 - DC 21) STANDBY HORIZON
 S 864-019
 (6)  Supply electrical power (AMM 24-22-00/201).
 S 864-020
 (7)  Set the two mode select switches on the IRS mode select unit (MSU)
 to the NAV position.
 NOTE:____ The IRS MSU is found on the pilot's P5 overhead panel.

 S 864-022
 (8)  
After approximately 5 seconds, make sure the two ALIGN annunciators on the MSU come on.

 S 864-023

 (9)  
Set the DSPL SEL switch on the inertial system display unit (ISDU) to the PPOS position.

 NOTE: The ISDU is found on the pilot's P5 overhead panel.
____
 S 864-027
 (10)
 Put the present position (latitude and longitude) into the ISDU display.

 S 864-028

 (11)
 If the two ALIGN annunciators on the IRS MSU flash, put the present position into the ISDU display again.

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 S 764-038
 (12)
 Set the DSPL SEL switch on the ISDU to the HDG/STS position.

 S 764-042

 (13)
 After approximately 2 minutes, make sure failure codes 05 and 06 do not come into view on the ISDU display. The failure codes can come into view in the far right piece of the ISDU display.

 NOTE:____ If the CLR switch comes on, then there is more than one
 failure code.  Push and release the CLR switch to see all the
 failure codes.

 S 864-046
 (14)
 Set the two switches on the IRS MSU to the OFF position.

 S 864-047

 (15)
 Close the 1201L electronic equipment access door if access is not necessary (AMM 12-31-11/201).

 S 864-048

 (16)
 Remove electrical power if it is not necessary (AMM 24-22-00/201).

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 IRS MASTER CAUTION UNIT - REMOVAL/INSTALLATION
　
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