Chapter 5. DIRECT SUPPORT MAINTENANCE INSTRUCTIONS

TM 5-6625-2691-13&P

CHAPTER 5

DIRECT SUPPORT MAINTENANCE INSTRUCTIONS

Section I. REPAIR PARTS, SPECIAL TOOLS AND EQUIPMENT

maintenance personnel to maintain the test set.

5-1. Tools and Equipment

There are no tools or equipment authorized other

5-3. Maintenance Repair Parts

than those listed in Appendix B for direct support

Repair parts and equipment covering direct support

maintenance personnel.

maintenance are listed and illustrated in the repair

parts and special tools list, Appendix B of this manual.

5-2. Special Tools and Equipment

There are no special tools or equipment required by

Section II. TROUBLESHOOTING

5 - 5 . Troubleshooting

5-4. General

Table 5-1 lists a malfunction which may occur in the

This section contains information useful to direct

test set. The malfunction is followed by a test and in-

support maintenance personnel in diagnosing and cor-

spection which will help you to determine the cause and

recting an unsatisfactory condition that may exist in

corrective action to take. You should perform the test

the equipment. Refer to paragraphs 3-6 and 4-13 for ad-

and inspection in the order listed.

ditional troubleshooting information relative to this

equipment.

Table 5-1. Troubleshooting

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

NOTE

Before you use this table, be sure you have performed all normal operational checks. If you have a malfunction which is not listed,

notify your supervisor.

LOAD DROPPAGE

WARNING

Do not breathe fumes of burning selenium rectifier. Fumes are toxic and dangerous.

Inspect the selenium rectifier for bum marks, breaks or other damage. Test the rectifier for continuity using a multimeter (para 7-2).

De-energize test set and allow fumes to dissipate. Replace a damaged rectifier.

a. Removal. Using figure 6-1 as a guide, remove the rectifier as follows:

(1) Tag and remove all wires.

(2) Remove mounting screws (4), flatwashers (8) and lockwashers (4).

(3) Remove rectifier.

5-1