126 Chapter 15 Troubleshooting

4Press OK or to go ahead with the test.

During the test, the display shows solid, dark blocks and all the indicators next to the buttons on the telephone. Any Busy Lamp Field (BLF) or CAP modules connected to the telephone must be completely lit. You lose any information which appeared on the BLF before the test started.

5Press any button to end the test.

Test the telephone buttons

To test the telephone buttons:

1Press ≤°‚fi. The display shows Display test.

2Press NEXT. The display shows Button test.

3Press TEST. Press each button to determine its function. If the button you pressed uses an indicator, it must light when you test the button.

4When you press the ® button, Rls button appears on the display. Press ® again to end this test.

Test the speaker in the telephone handset

The handset test is not available when a headset is plugged into the telephone.

1Press ≤°‚fi and NEXT twice. The display shows Handset test.

2Press TEST.

3Pick up the handset and listen. You can hear dial tone through the handset at a maximum volume. The volume is reset to maximum only while the test is in progress.

4Press any button to end the test.

Test the telephone headset

The headset test is only available to telephones with a headset.

1Press ≤°‚fi and NEXT until the display shows Headset test.

2Press TEST. You hear dial tone through the headset. The volume resets to the default level during this test.

3Press any button to end the test.

Test the telephone speaker

To test the telephone speaker:

1Press ≤°‚fi and NEXT until the display shows Speaker test.

P0937240 02

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Nortel Networks PO937240 02 manual Test the telephone buttons, Test the speaker in the telephone handset