Section I. TROUBLESHOOTING

TM 11-7021-202-12

Section I. TROUBLESHOOTING

INTRODUCTION

4-6.

The processor is a complex piece of electronic equipment. Organizational maintenance

personnel perform only those troubleshooting procedures contained within this manual. If a

malfunction occurs that is not covered in this manual, or if the listed maintenance action

does not correct the trouble, the processor is removed from its mounting and replaced with

a functioning spare processor. The defective processor is then referred to higher levels of

maintenance for repair.

NOTE

This manual cannot list all malfunctions that

might occur, or all tests, inspections, and

corrective actions required. If a malfunction is

not listed, or is not resolved by the listed

corrective actions, notify the shift supervisor.

4-7.

USE OF TROUBLESHOOTING FLOWCHARTS

Locate the malfunction in the Symptom Index.

Note that the troubleshooting flowcharts and procedures are indexed by

malfunction/symptom.

Review the sample flowchart (fig. 4-1) to become familiar with the proper use

of troubleshooting flowcharts.

4-8.

SYMPTOM INDEX

Table 4-1 provides an index of probable equipment malfunction symptoms. Use the index to

quickly locate applicable troubleshooting flowchart and/or procedures to determine the

required corrective action(s).

4-9.

TROUBLESHOOTING

a. The first step in troubleshooting the processor is to locate the symptom in the

troubleshooting Symptom Index (table 4-1).

Next, go to the applicable flowchart or procedure for that symptom.

c. After performing the required troubleshooting and making repairs, observe that

upon--application of power to the processor that the BITE self-test is completed successfully,

ensuring that repairs have been accomplished properly.

4-3