E. Put the Airplane Back to Its Usual Condition
S 864-028
(1)
Set the two mode select switches on the IRS MSU to the OFF position.
S 414-026
(2)
Close the 1201L electronic equipment access door if access is not necessary (AMM 12-31-11/201).
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S 864-022
(3) Remove electrical power if it is not necessary (AMM 24-22-00/201).
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DIGITAL/ANALOG ADAPTER - REMOVAL/INSTALLATION
_____________________________________________
1. General_______
A. This procedure contains two tasks. The first task is for the removal of a digital/analog adapter (DAA). The second task is for the installation of a DAA.
B. Two DAAs are installed in the main equipment center. DAA-1 and DAA-2 are installed on shelf No. 2 in the electronic equipment rack E1.
C. See 20-40-12/201, Electrostatic Discharge Sensitive Devices for the correct procedure to remove/install the DAA.
TASK 34-28-41-004-001
2. Digital/Analog Adapter Removal______________________________
A. References
(1)
AMM 12-31-11/201, Body Section 41 Access Doors and Panels
(2)
AMM 20-10-07/201, E/E Rack-Mounted Components
B. Access
(1)
Location Zones
205 Electronic Compartment
(2)
Access Panels
1201L Electronic Equipment Access Door
C. Procedure
S 864-003
(1) AIRPLANES WITHOUT EFIS; Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6-1 Circuit Breaker Panel
1) F/O ADI
2) CAPT ADI (ALT)
3) CAPT COMPASS XFMR (ALTN)
4) DAA NO. 2 DC
5) DAA/FMC NO. 2 AC
6) DAA/FMC NO. 2 DC
7) DAA/IRS NO. 2 AC
8) F/O HSI
9) F/O VSI
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10) F/O RDDMI
11) INSTR XFMR-2
12) IRS NO. 2 AC
13) IRS NO. 2 DC
14) VHF NAV-2 VOR/LOC
15) VHF NAV-2 G/S
16) AUTO FLIGHT CONT SYS B ENGAGE INTLK A
17) AUTO FLIGHT CONT SYS B MAC TRIM AC
18) AUTO FLIGHT CONT SYS B MACH TRIM DC
19) AUTO FLIGHT CONT SYS A SNSR EXC AC
20) AUTO FLIGHT CONT SYS B WARN LIGHT (BAT)
21) 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 G/S
13) VHF NAV-1 VOR/LOC
(d) P18-2 Circuit Breaker Panel 1) ADI 2) CAPT HSI 3) CAPT RDDMI 4) CAPT RDDMI ALT 5) CAPT VSI 6) FMCS CDU NO. 1 7) DAA 1 - DC 8) DAA/FMC 1 - AC 9) DAA/FMC 1 - DC 10) DAA/IRS 1 - AC 11) FMCS CDU NO. 2 (if installed)
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