Internal Temperature Sensor; Power Supply Cooling; Lanview Leds - Cabletron Systems 9C214-1 Installation Manual

9C214-1 Power Supply Operation
LANVIEW diagnostic LEDs. The information gathered by the System Diagnostic
Controller is available to the network manager via the LCD, as well as via local
and remote management. If the System Diagnostic Controller fails, the 9C214-1
power supply has been designed to continue to function and supply power to the
system.

Internal Temperature Sensor

Each 9C214-1 power supply has a built-in temperature sensor for monitoring its
own internal temperature. The results of the monitoring are available to the
network manager via LCD, as well as local and remote management.

Power Supply Cooling

Each 9C214-1 power supply includes an internal cooling fan. The System
Diagnostic Controller monitors the internal temperature of the power supply and
increases or decreases the fan speed based on that temperature. If the System
Diagnostic Controller fails, fan speed defaults to 100% to ensure protection of the
power supply.

LANVIEW LEDs

The LANVIEW LEDs on the back of the 9C214-1 power supply may be used as an
aid for troubleshooting.
There are three LANVIEW LEDs visible to the user (Figure 3-1): the PWR Status
LED, the SMB Status LED, and the Power Supply Level Indicator LED.
POWER SUPPLY MODULE
3-2
9C214-1
Power Supply Level Indicator LED
Figure 3-1. 9C214-1 Power Supply LANVIEW LEDs
PWR STATUS LED
P
W
R
STATUS
100%
Load
50%
0%
S
N
B
SMB STATUS LED