Avaya 03-300430 User Manual

Page of 2574
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 
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