Cabletron Systems 6H258-17 - Manual (Page 42)

Troubleshooting Checklist
4-6 Troubleshooting
Table 4-3 Power System Troubleshooting
Possible Causes Instruction
Loss of Power to the
6C105 chassis. Perform the following steps:
1. Check ON/OFF switches of 6C105 power supplies. All switches
must be in the ON ( | ) position.
2. Check all power cords and cables for proper connection. Examine
power cords for fraying or other damage. Replace if necessary.
3. Examine 6C105 chassis power supplies. If power supply LEDs or
audible warning tone indicate power supply problems,
troubleshoot or replace any faulty power supplies.
Fault in 6C105 power
bus. 1. Remove the SmartSwitch from the current slot and re-install in
another free slot in the chassis.
2. If the SmartSwitch functions in the selected slot, the SmartSwitch
onboard power converter is operational. The 6C105 chassis power
bus may have a localized fault. Install the SmartSwitch in the
working slot and contact Cabletron Systems.
3. If the SmartSwitch does not function in the selected slot, continue
the process with all module slots in the chassis. If the module
does not function in any slot, the chassis power bus may have a
system-wide fault or the module onboard power converter may be
inoperable. Diagnose the module power converter as described
below to isolate the fault.
Fault in SmartSwitch
module power
converter. 1. Remove a working module from a known good chassis.
2. Install the SmartSwitch in the known good slot.
3. If the SmartSwitch does not function, there may be a fault in the
onboard power converter. Contact Cabletron Systems
immediately.