CHAPTER IV – SECTION II TROUBLESHOOTING
4.2 GENERAL
The purpose of troubleshooting is to identify the most frequent equipment
malfunctions, probable causes, and corrective actions required. Table 4-2 lists
the common malfunctions which may be found during the operation or mainte-
nance of the DBAL-I
2
and accessory equipment. Perform the tests, inspections
and corrective actions in the order listed. This manual cannot list all malfunctions
that may occur; or all tests, inspections and corrective actions.
Table 4-1 Preventive Maintenance Checks and Services
Malfunction Test / Inspection Corrective Action Ref. Para.
1. POINT/ILLUM a. Ensure Activation Mode -Properly align switch. 3.2.b
beams fai to come Selector Switch is in proper
on or stay on. position.
b. Verify Exit Port Cover is -Remove Exit Port 4.3.b
removed and that the Exit Port Covers.
Lens is not obscured by -Clean POINT/ILLUM
mud/dirt. Exit Port Lenses.
c. Verify battery installation. -Tighten battery cap. 3.2.a
-Install new battery
d. Inspect battery cap for damage -Notify Unit Maintenance.
or corrosion.
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