user manual

ND-20292

CHAPTER 5

APRIL, 1990

No LED or Display Indications On Any Multiline Terminal

Bad

Check AC Power

* and the fuse.

Terminal from Module 1, first

ESI (programming station)

Correct AC Power

Problem

Pull out all ribbon connectorsand

printed circuit boards except the

CPU-E( ), TSW-E( ) and the first

installed ESI-E( ) in Module 1,

associated with the programming

station.

No / Retest for\ Correct

, Indication w Indication ,

1 ReplaPc;;i;;r;;;ding 1

card at a time. If

problem reappears,

replace defective

Good

Perform 2nd initialization. Replace TSW-E( ) and test.

If problem is not solved, perform 1 st initialization,

replace CPU-E ( ). Test system using default program.

500 -7