TM 5-6665-202-13
DIRECT SUPPORT MAINTENANCE INSTRUCTIONS
Section I.
REPAIR PARTS AND SPECIAL TOOLS AND EQUIPMENT
5-1. Tools and Equipment
maintenance on the mine detecting set are listed in
section III of appendix B.
Tools, equipment, and repair parts issued with or
authorized for the mine detecting set are listed and
5-3. Maintenance Repair Parts
illustrated in TM 5-6665-202-23P. An electronic AC
Repair parts and equipment are listed and illustrated
RMS voltmeter replaces the vacuum tube voltmeter.
in the repair parta and special tools list covering direct
support maintenance for this equipment in TM
5-2. Special Tools and Equipment
The special tools required to perform direct support 5-6665-202-23P
Section II.
TROUBLESHOOTING
5-4. General
Chart 5-1. Troubleshooting-Continued
a. This section contains troubleshooting information
for locating and correcting most of the operating trouble MALFUNCTION
which may develop in the mine detecting set. Each
TEST OR INSPECTION
malfunction for an individual component, unit, or sys-
CORRECTIVE ACTION
tem is followed by a list of tests or inspections which
Step 2. Check for defective switch.
will help you to determine probable causes and correc-
Test switch for continuity while in the ON
tive actions to take. You should perform the tests/
position. Replace switch if test indicates
inspections and corrective action in the order listed.
an "open" circuit.
b. This manual cannot list all malfunctions that may
Step 3. Check for defective terminal board.
occur, nor all tests or inspections and corrective
Remove modules end test terminal board.
actions. If a malfunction is not lieted or is not corrected
Replace a defective terminal board.
by listed corrective actions, notify depot maintenance 2. HEADSET DOES NOT GIVE SATISFACTORY
personnel.
SIGNAL
Step 1. Check for defective headset.
5-5. Troubleshooting
Teat headset and replace if either or both
Refer to chart 5-1 and troubleshoot a malfunctioning
earphones are defective.
Step 2. Check for defective detector head.
mine detector set.
Test transmitter coil and receiver coil located
in detector head and replace coils if defective.
Chart 5-1. Troubleshooting
Step 3. Check for defective terminal board.
Remove modules end test terminal board.
MALFUNCTION
Replace a defective terminal board.
TEST OR INSPECTION
3. SET CUTS OFF AND ON DURING OPERATION
CORRECTIVE ACTION
Step 1. Check for loose connection at detector head.
Tighten loose or repair broken connection
1. MINE DETECTOR FAILS TO START WHEN
at detector head.
SWITCH IS TURNED ON.
Step 2. Check for defective detector head.
Step 1. Inspect for loose, corroded, broken or defective
Test transmitter coil and receiver coil located
battery connections.
in detector head and replace coils if defective.
Clean corroded battery connections, tighten
Step 3. Check for defective terminal board.
loose, or replace broken battery connections.
Remove modules and test terminal board.
Replace a defective terminal board.