Cabletron Systems 6000 manual Loss of power to the

Troubleshooting Checklist

Table 4-3 Power System Troubleshooting

Possible Causes	Instruction
Loss of power to the	Perform the following steps:
6C105 chassis.	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	1. Remove the 6E233-49 SmartSwitch from the current slot and
bus.		re-install in another free slot in the chassis.
	2.	If the 6E233-49 SmartSwitch functions in the selected slot, the
		6E233-49 SmartSwitch onboard power converter is operational.
		The 6C105 chassis power bus may have a localized fault. Install
		the 6E233-49 SmartSwitch in the working slot and contact
		Cabletron Systems.
	3.	If the 6E233-49 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 6E233-49	1. Remove a working module from a known good chassis.
SmartSwitch module	2.	Install the 6E233-49 SmartSwitch in the known good slot.
power converter.
	3.	If the 6E233-49 SmartSwitch does not function, there may be a
		fault in the onboard power converter. Contact Cabletron Systems
		immediately.

4-6Troubleshooting