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Communication Manager Maintenance-Object Repair Procedures
758 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
CABINET (Cabinet Sensors)
S8700 | 8710 / S8500
This maintenance object covers environmental maintenance for S8700, and S8500 media
servers equipped with multicarrier cabinets (MCCs), and for media servers equipped with
CMC1 or G600 carriers.
S8700 | 8710 / S8500
Note:
Note: The CABINET MO for S8700 and S8500 media servers is valid only for
multicarrier cabinets (MCCs). For information about environmental maintenance
on single-carrier cabinets (SCCs), see DC-POWER (Single-Carrier Cabinet
Environment) on page 880.
The cabinet sensors monitor cabinet temperature and fan rotation. Variable-speed fans are
used extensively in S8700 systems.
The Maintenance circuit pack in an MCC PN monitors a temperature sensor (S1) at the top of
the cabinet and generates a major alarm if the exit air temperature exceeds 65 degrees Celsius
(149 degrees Fahrenheit). Another temperature sensor in the top of the cabinet (S2) also
monitors exit air temperature. If it exceeds 70 degrees Celsius (158
degrees Fahrenheit), the
power-distribution unit turns off all cabinet power and invokes emergency transfer. Other
sensors monitor fan performance.
The repair procedures that follow rely on your ability to distinguish between high and low fan
speeds by the sound of the fans. Experience will allow you to distinguish between the high and
low pitches generated by high and low speeds. A thermometer is also required for some of the
procedures that follow.
In making replacements, observe the following rules:
● New fan assemblies accept only variable-speed fans.
● Old fan assemblies accept either variable- or constant-speed fans.
● Replace a fan assembly (carrier) only with a fan assembly of the same type (new for new,
old for old).
MO Name in Alarm Log Alarm
Level
Initial Command to Run Full Name of MO
CABINET MAJ test environment location Cabinet Sensors
CABINET MIN test environment location Cabinet Sensors