CHAPTER 4: Test Procedures

12.Put the circuit into its normal operating configuration. (Connect all terminals to the S/T interface.)

Comprehensive Troubleshooting Flow Chart

Initially, the Test Set should be in NORMAL mode

START

PUT CIRCUIT IN POINT TO POINT CONFIGURATION

(CONFIG. 1)

CHECK POWER

LINE TEST

INITIATE

GOOD LINE,

 

NO

DOES RED

GRN

 

 

 

 

TEST RESULT?

TERMINAL SHOULD

 

 

 

 

 

 

LIGHT FLASH?

 

 

WORK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PROBLEM

 

 

CHECK LOOP

 

 

 

 

 

 

PUT CIRCUIT

 

 

COULD BE

 

 

 

 

 

 

JITTER IN NT1,

 

 

 

 

 

 

 

 

 

 

BACK TOGETHER

 

 

OR NOISE

 

 

 

 

 

 

 

 

ON LINE

 

 

 

 

 

 

 

 

 

 

 

 

DONE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINAL

YES

GOOD LINE,

 

 

 

 

 

 

 

 

 

 

WORK?

 

 

DONE

 

 

 

 

NO

A

Figure 4-4. Comprehensive troubleshooting flow chart (1 of 2).

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Black Box BRTS-100 manual Comprehensive troubleshooting flow chart 1