Page 520 of 536
Chapter 25 — Fault locating and clearing
553-3121-210
Standard 3.0
January 1999
Possible cause
Action
Defective PE circuit
card
Software disable the TN indicated by the OVD message by entering
LD 32
DISU c u
(“c u” represent card and unit number)
Disconnect the wiring between the PE circuit card and the
cross-connect terminal.
Re-enable the TN by entering
ENLU c u
Wait for an OVD message.
If you receive a message indicating a problem with the circuit card
or unit, replace the circuit card.
If you do not receive a message indicating a problem with the circuit
card or unit, reconnect the wiring and go to the next possible cause.
Defective telephone
If the telephone is a Meridian Digital Telephone, enter
LD 32
IDU c u
If there is no response, replace the telephone.
If there is an appropriate response, continue this procedure.
Disable the telephone TN. Disconnect the wiring from the telephone
to the jack.
Re-enable the TN and wait for an OVD message.
If you do not receive an OVD message, replace the telephone.
If you receive an OVD message, reconnect the wiring and go to the
next possible cause.
—continued—
Содержание Meridian Meridian 1
Страница 3: ...553 3121 210 Standard 3 0 January 1999 ...
Страница 17: ...xiv Contents 553 3121 210 Standard 3 0 January 1999 ...
Страница 89: ...Page 70 of 536 Chapter 6 Bracing cabinets against earthquakes 553 3121 210 Standard 3 0 January 1999 ...
Страница 97: ...Page 78 of 536 Chapter 8 Installing a new system 553 3121 210 Standard 3 0 January 1999 ...
Страница 107: ...Page 88 of 536 Chapter 10 Installing the system ground 553 3121 210 Standard 3 0 January 1999 ...
Страница 113: ...Page 94 of 536 Chapter 11 Installing the power supply 553 3121 210 Standard 3 0 January 1999 ...
Страница 125: ...Page 106 of 536 Chapter 12 Adding an expansion cabinet 553 3121 210 Standard 3 0 January 1999 ...
Страница 139: ...Page 120 of 536 Chapter 13 Installing the circuit cards 553 3121 210 Standard 3 0 January 1999 ...
Страница 157: ...Page 138 of 536 Chapter 15 Installing and connecting SDI and Ethernet ports 553 3121 210 Standard 3 0 January 1999 ...
Страница 175: ...Page 156 of 536 Chapter 16 Starting up and testing the system 553 3121 210 Standard 3 0 January 1999 ...
Страница 209: ...Page 190 of 536 Chapter 18 Connecting the trunks 553 3121 210 Standard 3 0 January 1999 ...
Страница 323: ...Page 304 of 536 Chapter 21 Installing Hospitality 553 3121 210 Standard 3 0 January 1999 ...
Страница 419: ...Page 400 of 536 Chapter 23 Pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 455: ...Page 436 of 536 Chapter 24 Changing pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 555: ...Page 536 of 536 Chapter 25 Fault locating and clearing 553 3121 210 Standard 3 0 January 1999 ...