Cabletron Systems SEHI100TX- User Manual

The following section details the procedures that must be followed to 
power up and interconnect stacked hubs. Failure to follow this procedure 
may result in damage to the equipment.

1. Power up the SEHI by plugging the power cord into the back panel of 

the SEHI and plugging the other end into a grounded receptacle.

2. Verify that the PWR LED is on, indicating that the SEHI is receiving 

power. After the SEHI runs a self test and completes the boot process 
successfully, the CPU LED blinks green indicating normal operation. 
If the LED remains red, the processor is faulty; contact Cabletron 
Systems Technical Support. Do not proceed with the following steps 
until the CPU LED is a steady blinking green.

3. Power up the SEH above the SEHI in the stack by plugging the power 

cord into the back panel of the SEH and plugging the other end into a 
grounded receptacle.

If you are using an intelligent hub (SEHI) to manage the stack, 
you must locate the SEHI at the bottom of the stack.

The SEHI must be completely powered up and initialized 
before powering up and interconnecting the rest of the stack.

The SEH and the SEHI have universal power supplies that 
allow connection to power sources from 100 Vac to 125 Vac
@ 4.0 A or 200 Vac to 250 Vac @ 2.0 A, 50/60 Hz.

Locate the SEHI at the bottom of the stack.

For management purposes, stacked hubs are always 
numbered from 1 to 5 starting at the bottom.

Do NOT power up or interconnect any other hubs in the stack 
until the SEHI has successfully completed the boot process.

SEHI Book  Page 7  Wednesday, May 15, 1996  10:42 AM