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A 737-300/400/500MAINTENANCE MANUAL
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A 737-300/400/500MAINTENANCE MANUAL
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A
737-300/400/500MAINTENANCE MANUAL
ATC SYSTEM - ADJUSTMENT/TEST
____________________________
1. General_______
A. This procedure contains two tasks. One is an operational test; the other is a system test. The operational test is a fast check of the ATC system. The system test first does the operational test. Then it uses test equipment to examine th e ATC code reception altitude reporting, transponder sensitivity, side to be suppression, and transmitter frequency.
B. These ramp test set can be used to do the system test:
Collins 476X-3 test set
Tel-Instrument Electronics Corp. T-33B test set
Instrument Flight Research ATC-600A test set.
Instrument Flight Research ATC 601 ramp test set.
TASK 34-53-00-715-001
2. Operational Test - ATC System_____________________________
A. General
(1) This test examines the ATC system for proper operation. It uses only the system's BITE function. No special test or ground equipment is necessary.
B. References
(1) 24-22-00/201, Maintenance Practices
C. Access
(1)
Location Zones
101/102 Flight Compartment
205 Electronic Compartment
(2)
Access Panels
1201 Electronics Equipment Access Door
D. Procedure
S 865-002
(1)
Supply electrical power (Ref 24-22-00/201).
S 865-003
(2)
Make sure these circuit breakers are closed:
(a) P18 Load Control Center - Left
1) ATC 1
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A 737-300/400/500MAINTENANCE MANUAL
2) DADC LEFT
3) ALTM CAPTAIN
(b) P6 Load Control Center - Right
1) ATC 2
2) DADC RIGHT
3) ALTM FIRST OFFICER
S 865-004
(3)
Set the transponder select switch on the ATC control panel to STBY.
S 865-005
(4)
Let the ATC system warmup for one minute.
S 865-006
(5)
Set the transponder select switch on the ATC control panel to the L or 1 position.
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