Table 20: Troubleshooting Jcs 1200 Fan Module Problems; Table 21: Troubleshooting Jcs 1200 Management Module Problems - Juniper JCS 1200 Hardware Manual

Table 20: Troubleshooting JCS 1200 Fan Module Problems

Symptom
A fan module is always operating
at full speed.
A fan module is not working.
Related Topics
Troubleshooting JCS 1200 Management Module Problems
Table 21 on page 87 shows common symptoms and corrective actions for
troubleshooting management module problems.

Table 21: Troubleshooting JCS 1200 Management Module Problems

Symptom
Cannot connect to the JCS 1200
platform using Telnet
Action
1. Make sure that:
The other fans are installed and working.
At least one management module is installed, and it is active and working.
2. Reseat the fan module.
3. Contact your Juniper Networks representative.
1. Make sure that all power cords are connected to a compatible power source and that
the power source is working (see "Connecting the JCS 1200 AC Platform to AC
Power" on page 62 or "Connecting the JCS 1200 DC Platform to DC
Power" on page 63
2. Reseat the fan module.
3. Contact your Juniper Networks representative.
Overview of JCS 1200 Troubleshooting Tables on page 86
Overview of JCS 1200 Diagnostic Tools on page 85
Using Diagnostic LEDs to Diagnose Problems on the JCS 1200
Platform on page 89
Diagnostic LEDs on the JCS 1200 Platform on page 90
Replacing a JCS 1200 Fan Module on page 116
Action
1. Make sure that:
The network cable is connected to the Ethernet port on the primary management
module.
The network cable is not connected to the serial port on the management module.
The IP address or hostname is correct. The default IP address is 192.168.70.125.
2. Reseat the management module.
NOTE: Removing the primary management module will cause an automatic failover to the
redundant management module, if one is installed.
3. Reset and reconfigure the management module (for more information, see JUNOS
Protected System Domain Configuration Guide).
4. Contact your Juniper Networks representative.
Troubleshooting JCS 1200 Management Module Problems
Chapter 9: Troubleshooting Common JCS 1200 Platform Problems
87