Troubleshooting; General 101; References - Boeing 737-300 Series Maintenance Manual

1. General
A. The troubleshooting procedures make use of the self-test features of the ATC transponder and ATC system
tests to isolate problems. These procedures are in a tree-type format.
B. If the procedure does not correct the problem examine and repair if necessary, the circuit between the
equipment.
C. The troubleshooting procedures are applicable to ATC system No.1 (Figure 101) and ATC system No.2
(Figure 102).
2.

References

A. 24-22-00/201, Manual Control
B. 34-53-02/501, ATC System - Adjustment/Test
C. 34-53-11/201, ATC Antenna - Removal/Installation
D. 34-53-21/201, ATC Transponder - Removal/Installation
E. 34-53-31/201, ATC Control Panel - Removal/Installation
3. Prepare for Troubleshooting
A. Supply the electrical power (Ref 24-22-00).
B. Make sure the ATC, interphone and air data system circuit breakers on P18 and P6 panels are closed.
C. On the ATC Control Panel, set the ATC select switch to the transponder to be tested (No.1 or No.2).
NOTE: Let the transponder warm-up for at least one minute.
D. Do the operational or system test (Ref. 34-53-00/501).
EFFECTIVITY
PW245
Use and disclosure shall be in accordance with the proprietary legend located on the cover of this document
GENERAL AEROSPACE
Boeing 737-300
MAINTENANCE MANUAL
ATC SYSTEM - TROUBLE SHOOTING
34-53-00GA
DRAWING # GA-BC17-ATC-MM
Page 101
AUG 15/10