Nortel Meridian 1 Manual page 24

7 Tag and disconnect the cables from the front of all cards on the QSD18
CE shelf, the QSD19 CE shelf, and the QSD2 CE shelf, if equipped.
8 Remove cards from the QSD18, QSD19, or QSD2 CE shelves and store
them in a safe place.
9 Tag and disconnect the tape unit alarm connector. To do this, you must
first remove the tape unit and then disconnect the alarm connector.
10 The CE shelf will not be used after the upgrade is completed. You may
remove it now if you wish:
• Tag and disconnect power connectors and alarm connectors from
the QSD18, QSD19, or QSD2 shelf, if equipped. Tape all exposed
power leads with electrical insulation tape.
Note: If the cabinet is equipped with an expansion CE shelf (a second
CE shelf), disconnect and remove the wiring between the +5V, +12V,
–12V, and LGND connections on the CE shelf.
• Tag and disconnect all CE alarm connectors.
• Remove the QPC84 Power Monitor and set switches to disable
power monitoring in the CE shelf. A QPC84 Power Monitor vintage
S or later is required. Refer to Circuit card installation and testing
(553-3001-211) for switch setting information.
• Install the QPC84S Power Monitor.
Upgrade system installation Upgrading to Meridian 1 system options
SL-1 A, M, S, and MS system upgrades 2-11