(3)
Remove the relay from the rack.
S 034-003
S 024-004
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A 737-300/400/500MAINTENANCE MANUAL
Compass Transfer Relay Installation
Figure 401
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A05812
A 737-300/400/500MAINTENANCE MANUAL
TASK 34-28-94-404-005
3. Compass Transfer Relay Installation
___________________________________
A. References
(1)
AMM 21-58-00/501, Equipment Cooling System
(2)
AMM 24-22-00/201, Manual Control
B. Access
(1)
Location Zone
205 Electronic Compartment
(2)
Access Panel
1201L Electronic Equipment Access Door
C. Procedure
S 864-006
(1) Make sure that these circuit breakers are open:
(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
S 424-007
(2)
Connect the relay to the rack.
(3)
Install the screws into the face of the relay.
S 864-009
(4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
S 434-008
(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
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A
737-300/400/500MAINTENANCE MANUAL
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) CAPT 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
D. Compass Transfer Relay Test
S 864-010
(1)
Make sure that these circuit breakers are closed:
(a)
P6 Circuit Breaker Panel 1) INSTR XFMR 2 2) CAPT COMPASS XFMR (ALTN) AC 3) DAA NO. 2 FMC 4) DAA NO. 2 FMC AC 5) DAA NO. 2 IRS AC 6) DAA NO. 2 IRS DC 7) DIM AND TEST 8) INSTR XFMR-2 9) IRS NO. 1 AC 10) IRS NO. 1 DC 11) MASTER DIM BUS BAT 12) MASTER DIM BUS NO. 1 DC 13) MASTER DIM BUS NO. 2 DC 14) MASTER DIM BUS SECT 2
(b)
P18 Circuit Breaker Panel 1) INSTR XFMR 1 2) CAPT CMPS XFMR (ALT) 3) DAA NO. 1 FMC 4) DAA NO. 1 FMC AC 5) DAA NO. 1 IRS AC 6) DAA NO. 1 IRS DC 7) EQUIPMENT COOLING BLOWER ALTN AC 8) EQUIPMENT COOLING BLOWER NORMAL AC 9) EQUIPMENT COOLING CONTROL 10) F/O COMPASS XFMR (ALTN) AC 11) INSTR XFMR-1 12) IRS NO. 2 AC
(2)
Supply the electrical power (AMM 24-22-00/201).
S 864-011
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