Lucent Technologies MERLIN LEGEND Release 6.0 Maintenance And Troubleshooting Manual page 89

MERLIN LEGEND Communications System Release 6.0
Maintenance and Troubleshooting 555-660-140
Telephone Problems
MLX Telephone Tests
Press each fixed-feature button that does not have an LED
! 
(Transfer, Conf, Drop, and Hold) and each dialpad button.
When you press each one of these buttons, the Message LED should
toggle on and off.
Press the fixed-feature buttons and the dialpad buttons in the order
! 
shown below to turn on all the LEDs.
a Volume down
b Volume up
c Transfer
d Conf
e Drop
f Hold
g Dial
The LEDs should toggle on and off.
If the MLX telephone does not have a display, hang up and go to
! 
Step 9; if it does, continue with the next step.
To test an MLX display, press each display button.
! 
Each button name should display in the upper-left corner as described in
Table 3–2.
If any of these tests fail, replace the MLX telephone.
! 
Test the Multi-Function Module (MFM) if present.
! 
a Connect a single-line telephone to the MFM.
b Pick up the handset on the single-line telephone.
c When you hear the system access or intercom dial tone, dial
from the single-line telephone.
This connects the diagnostic test tone to the B-channel.
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Issue 1
February 1998
Page 3-7
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