CHAPTER 4 FAULT ISOLATION PROCEDURES

TM 9-1240-322-34&P

FAULT ISOLATION PROCEDURES

4-1.

SCOPE

This chapter gives step-by-step procedures to troubleshoot the fault symptom found during checkout.

After you correct the fault symptom, do the checkout procedure in Chapter 2 again. This is to make

sure all fault symptoms are repaired.

R E T I C L E IMAGE CANNOT BE SEEN (SHEET 1 OF 8)

TEST EQUIPMENT 0-50 VDC power supply

TOOLS: #2 cross tip screwdriver (Phillips type)

Sealing compound (Item 4, App. A, Vol II)

SUPPLIES:

Solder (item 5, App. A, Vol II)

PERSONNEL: One

REFERENCES: TM 9-2350-215-10 for replacing lamp

JPG 41C for: Using power supply

Cleaning terminals and contacts

Putting on sealing compound

EQUIPMENT CONDITION: Infinity sight on work bench; power disconnected

Vol I

4-1