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 TM 55-1905-220-14-3
Table 3-90. Steering Control Panel Troubleshooting (Cont).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5.
Automatic steering controls inoperative or erratic.
Step 1.
Check for defective switch.
Replace. Refer to paragraph 3-214.
Step 2.
Check for defective variable resistors.
Replace. Refer to paragraph 3-214.
Table 3-91. Remote Magnetic Heading System Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
Inoperative (D.C. Distribution Box CP24-1)
Step 1.
Inspect for switch turned off.
Turn switch on.
Step 2.
Check for blown fuse(s).
Replace fuse(s).
Step 3.
Check for defective wiring.
Refer to Direct Support Maintenance.
Step 4.
Check for defective indicator or transmitter.
Refer to Direct Support Maintenance.
2.
Incorrect heading.
Step 1.
Check calibration adjustment.
Refer to Direct Support Maintenance.
Step 2.
Check for defective indicator, wiring or transmitter.
Refer to General Support Maintenance.
3-242
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