(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 864-002
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6 Circuit Breaker Panel
1) IRS NO. 2 AC
2) IRS NO. 2 DC
(b)
P18 Circuit Breaker Panel
1) IRS 1-AC
2) IRS 1-DC
S 014-024
(2) Open the 1201L electronics equipment access door to get to the IRU (AMM 12-31-11/201).
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S 864-033
(3) When removing IRU #1, disconnect the pitot and static lines in front of ADC #2.
NOTE: It is not necessary to disconnect the pitot or static line
____
when removing IRU #2.
S 244-029
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE IRU.
_______ IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE IRU.
CAREFULLY REMOVE THE IRU. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE IRU OR THE IRU RACK INSTALLATION.
(4) Remove the IRU from the shelf (AMM 20-10-07/201).
TASK 34-28-31-404-013
3. Inertial Reference Unit Installation
____________________________________
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
(3)
AMM 24-22-00/201, Manual Control
(4)
AMM 34-28-00/201, Inertial Reference System
(5)
AMM 34-28-01/201, Inertial Reference System
B. Access
(1)
Location Zones
205 Electronic Compartment
(2)
Access Panels
1201L Electronic Equipment Access Door
C. Procedure
S 864-005
(1) Make sure these circuit breakers are open with DO-NOT-CLOSE tags attached:
(a)
P6 Circuit Breaker Panel
1) IRS NO. 2 AC
2) IRS NO. 2 DC
(b)
P18 Circuit Breaker Panel
1) IRS 1-AC
2) IRS 1-DC
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737-300/400/500MAINTENANCE MANUAL
S 424-027
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE IRU.
_______ IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE IRU.
CAREFULLY INSTALL THE IRU. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE IRU OR THE IRU RACK INSTALLATION.
(2) Install the IRU on the shelf (AMM 20-10-07/201).
S 864-035
WARNING: MAKE SURE THAT THE PITOT AND STATIC LINES FOR ADC #2 ARE
_______ RECONNECTED. LOSS OF AIR DATA WILL OCCUR IF THE PITOT AND STATIC LINES ARE NOT RECONNECTED.
(3)
Reconnect the pitot and static lines in front of ADC #2.
S 864-012
(4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P6 Circuit Breaker Panel
1) IRS NO. 2 AC
2) IRS NO. 2 DC
(b)
P18 Circuit Breaker Panel
1) IRS 1-AC
2) IRS 1-DC
D. Test The IRU
S 714-030
(1)
AIRPLANES WITHOUT EFIS;
Align the IRS (AMM 34-28-00/201).
S 714-031
(2)
AIRPLANES WITH EFIS;
Align the IRS (AMM 34-28-01/201).
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