Tado Self Test - Northern Telecom Meridian M3000 Reference Manual

Procedure 8-3
Trouble locating for data communications failure
1
2
3
Procedure 8-4
Trouble locating for EDPC failure
1
2
Procedure 8-5
Trouble locating for telephone (voice or dialing) failure
1
2
3
4

TADO self test

The TADO Self Test enables a user to test the TADO circuit board, even if
there is no DTE present.
This test can be run in response to problems with keyboard functions.
Meridian 1 Options 201, 211 Meridian SL-100 M3000 Touchphone Reference Manual MSL03
If the Touchphone screen shows the prompt: CHECK TERMINAL AND TRY
AGAIN, check for a disconnected RS-232 plug or power source.
Response: Touchphone screen changes to Data Call Initiation state. Attempt
data call from DTE keyboard. If unsuccessful, proceed with Step 2.
If Touchphone screen shows the prompt: REPORT DATA CHANNEL
PROBLEM, check if TADO is faulty. Perform the TADO Self-T est.
Response: Attempt to make a data call from the DTE keyboard If not
successful, proceed with Step 3.
Contact service personnel to replace TADO circuit board. Reconnect TADO
power supply/converter.
Check the Meridian SL-100 MAP workstation for displayed error code.
Replace faulty components.
Response: Try to establish a call. If unsuccessful, proceed to check the
M3000 Touchphone.
Check line cord and handset cord to determine if all TELADAPT connectors are
firmly in place and resecure if loose.
Lift handset and listen for dial tone and/or dial a directory number. If
unsuccessful, proceed with Step 2.
Wiggle line cord and/or handset cord while listening for sounds from handset. If
crackling or ticking sounds result, replace cord.
Response: Try to establish a call. If unsuccessful, proceed with Step 3.
Replace M3000 Touchphone.
Response: Try to establish a call. If unsuccessful, proceed with Step 4.
Check wiring between EDPC, distribution panel, and telephone for breaks or
loose connections. If necessary, rerun wiring.
Testing and maintenance 8-3