TM 5-6665-202-13
Table 4-1. Preventive Maintenance Checks and Services
OrganizationalMaintenance Category
Monthly Schedule (or quarterly)
Sequence
Paragraph References
Procedures
number
Item to be Inspected
Clean corroded battery. Test battery voltage.
Battery
Replace a weak, damaged, or defective battery.
para 4-8
Check headset for damage, defects, and proper
Headset
2
tone response.
Replace damaged or defective battery adapter
Battery adapter
3
and cable. Test battery adapter for continuity.
Tighten loose mounting.
Detector head and
4
balance coil assembly
Tighten loose mounting. Replace worn, damaged
Case
5
or defective case, lining seal, handle latches,
or vent.
Replace damaged or defective modules.
Modules
6
Checks and
4-6. Preventive Maintenance
maintenance checks and services. If equipment is not in
Services
use, perform maintenance checks and services on a
quarterly basis.
Refer to table 4-1 and perform the monthly preventive
Section VI. TROUBLESHOOTING
4-7. General
Chart 4-1. 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 system
CORRECTIVE ACTION
is followed by a list of tests or inspections which will help
you to determine probable causes and corrective actions to
MINE DETECTOR SET-Continued
take. You should perform the tests/inspections and
2. NO INCREASED HEADSET TONE WHEN METAL
corrective action in order listed.
OBJECT IS POSITIONED NEAR THE DETECTOR
b. This manual cannot list all malfunctions that may
HEAD.
occur, nor all tests or inspections and corrective actions. If
Step 1. Test battery.
a malfunction is not listed or is not corrected by listed
If battery voltage is below 8.5 volts, replace
corrective actions, notify direct support maintenance
battery.
personnel.
Step 2. Replace modules.
Troubleshooting
Refer suspect module(s) to direct support
Refer to chart 4-1 and troubleshoot a malfunctioning mine
maintenance personnel for testing, repair, or
detector set.
replacement.
Chart 4-1. Troubleshooting
3. NO OUTPUT FROM DETECTOR HEAD.
Step 1. Test battery.
MALFUNCTION
If battery voltage is below 8.5 volts, replace
TEST OR INSPECTION
battery.
CORRECTIVE ACTION
Step 2. Replace oscillator module.
Refer suspect module to direct support
MINE DETECTOR SET
maintenance personnel for testing, repair, or
1. MINE DETECTOR SET INOPERATIVE WITH
replacement.
POWER ON.
HEADSET
Step 1. Test battery.
1. HEADSET SIGNAL ABSENT OR INTERMITTENT
If battery voltage is below 8.5 volts, replace
WHEN DETECTOR SET IS TURNED ON.
battery.
Step 1. Test battery.
Step 2. Replace modules.
If battery voltage is below 8.5 volts, replace
Refer suspect module(s) to direct support
battery.
maintenance personnel for testing, repair, or
Step 2. Check to see if battery cap is tight and clean.
replacement.
