Nortel Networks P0857846 User Manual

146 / Troubleshooting

Norstar-PLUS Modular ICS 2.0 System Coordinator Guide

P0857846 Issue 02

Use a display test if you suspect that one of the indicators on the 
telephone is not working.

•

Press

 ƒ°‚fi

. 

The display shows 

Display test

.

•

Press 

TEST

 or 

˙

 to go ahead with a display test.

•

Adjust the contrast for the telephone display so you will be able 
to see the test results clearly. Enter a number to change the 
contrast or press 

DOWN

 and 

UP

.

•

Press 

OK 

or 

˙

 to go ahead with the test.

During the test, the display should be filled with solid, dark blocks 
and all the indicators next to the buttons on the telephone should be 
turned on. Any Busy Lamp Field (BLF) or CAP modules that are 
attached to the telephone should also be completely lit. You will lose 
any information that was showing on the BLF before the test started. 

Pressing any button ends the test.

•

Press 

ƒ°‚fi

, then 

£

 or 

NEXT

.

•

Press 

TEST

 or 

˙

 to go ahead with a button test.

•

Press button to see its function. If the button you pressed uses 
an indicator, it should also turn on when you test the button.

•

Pressing the 

®

 button puts 

Rls button

 on the display briefly 

and returns you to the 

Button test

 display.

The handset test is not available if you have a headset plugged into 
the telephone.

•

Press 

ƒ°‚fi

, then 

£

 or 

NEXT

 twice. The display 

shows 

Handset test

.

•

Press 

TEST

 or 

˙

 to go ahead with a handset test.

•

Pick up the handset and listen. You should hear dial tone 
through the handset at a maximum volume. The volume is reset 
to maximum only while the test is going on.