ND-20292

CHAPTER 5

APRIL, 1990

A2

No LED or Display Indications On Any Multiline Terminal

Bad

Check

AC

Power

 

 

 

*

and

the

fuse.

Terminal

from

Module

1, first

Correct

AC Power

ESI (programming

 

station)

 

 

Problem

 

 

 

 

 

Pull out

all ribbon

connectorsand

1

ReplaPc;;i;;r;;;ding

1

 

 

 

printed

circuit

boards

except

the

 

 

 

CPU-E(

), TSW-E(

)

and

the

first

 

 

 

installed

ESI-E(

) in

Module

1,

 

 

 

associated

with

the

programming

 

 

 

station.

 

 

 

 

 

 

 

 

 

No

/

A

Correct

 

Good

 

Retest for\

 

1

,

Indication

w

 

Indication

,

card at a time. If

problem reappears, replace defective

Perform

2nd

initialization.

 

Replace

TSW-E(

) and test.

If problem

is

not

solved,

perform

1st initialization,

replace

CPU-E

(

). Test

system

using

default

program.

500 -7

Page 592
Image 592
NEC nd-20292 manual 500