Testing and maintenance 11Meridian SL-100 M2000 Digital Telephone Reference ManualProcedure 6 Enhanced digital port card failure1 Check the MAP workstation for displayed error code.Response: MADO Self Test completes. The test is over whenthe handset is replaced, regardless of whether the test has beencompleted.2 Replace faulty components.Response: MADO Self Test completes. The test is over whenthe handset is replaced, regardless of whether the test has beencompleted.3 Try to establish a call.Response: If the call attempt is unsuccessful, go to Procedure1.Procedure 7 Telephone (voice or dialing) failure1 Check the line cord and handset cord to determine if allTELADAPT connectors are firmly in place, and resecure if loose.Response: Lift handset and listen for dial tone, or dial adirectory number, or both. If unsuccessful, proceed with Step 2.2 Lift the handset, listen for dial tone, and dial a directory number.Response: If unsuccessful, proceed with Step 3.3 Wiggle the line cord, handset cord, or both while listening forsounds from the handset. If crackling or ticking sounds occur,replace the cord.4 Try to establish a call.Response: If unsuccessful, proceed with Step 5.5 Replace the M2000 Digital Telephone.6 Try to establish a call.Response: If unsuccessful, proceed with Step 7.7 Perform Procedure 6-8. If the test fails, try another port with thesame phone.8 Try to establish a call.Response: If unsuccessful, proceed with Step 9.