Troubleshooting guide

MX2820 System Manual
1-16 61186003L1-1D
Bay Configurations
Passive and Forced Air
MX2820 bay configurations are detailed in “Section 2, Engineering Guidelines”. Detailed
drawings for both passive cooling with heat baffles and forced air cooling with fans are shown
in “Section 2”. The heat baffles are available to direct heat away from the equipment shelves.
Fan modules and filters may be fitted to the heat baffles for improved cooling and density. The
heat baffles and fan modules are available for both the 19-inch and 23-inch MX2820 shelves.
Accessory Equipment
Common Accessories for either shelf
Table 1-5 lists the accessories common for either shelf.
LED Status for Standby MUX
ACT
Flashing Green
Amber
Flashing Red
Normal (all OK)
Software update in progress
Self-test failure
ALM
Off Permanent state during standby
NET STAT
Off
Flashing Red
Normal (STS-1 OK)
STS-1 failure
NET TEST
Off Permanent state during standby
DS1 STAT
Off
Flashing Red
Normal (DS1s OK)
DS1 failure
DS1 TEST
Off Permanent state during standby
Table 1-5. MX2820 Common Accessories
Description Part Number
Mux Blank Card 1186010L1
Clock Blank Card 1186011L1
Table 1-4. MX2820 STS-1 MUX Front Panel LEDs (Continued)
LED State Description