LEDs and Optics
7450 ESS-7 Page 113
3
(cont)
Fan Status
Fan Stat us LEDs
1,2,3 • Green: Indicates that the fan tray is installed and operational.
• Amber: Indicates a fan tray removal or failure.
• Unlit: Indicates that the fan tray is not installed.
• In the 7450 ESS-7 model, only LED 1 and 2 illuminate.
• In the In the 7450 ESS-7 model, the fan status LEDs on the secondary
SFM will light similarly to the primary SFM. A fault is indicated in one
SFM if the primary fan status LED and the comparable secondary LED
differ. The SFM should be returned for repair.
Compact Flash 1,2,3 • Green: Indicates that the flash card is operational and in a read or write
process.
Note: Do not physically remove or attempt to remove the flash card
when the LED is lit green.
• Amber (blinking): Error condition exists.
• Amber (solid): Indicates that the slot is in an operationally down mode.
This is the only mode to safely remove the flash card.
• Unlit: A flash card is not installed in the slot.
Alarms OT • Red: An overtemperature condition exists.
If there are no OT conditions, this LED should remain off.
Crit • Red: Indicates that a critical condition exists, such as a power supply
over temperature condition, a fan tray failure, or an AC or DC power
supply failure.
If there are no critical conditions, this LED should remain off.
Maj • Red: Indicates that a serious condition exists, such the removal of a
power supply.
If there are no major conditions, this LED should remain off.
Min • Amber: There are no conditions defined for a minor alarm.
This LED should remain off.
4 BITS • The BITS port is provisioned with a RJ-45 jack and used for the
network clock source.
• The link LED on the BITS interface is lit if a clock signal is being
received.
→ If sync-if-timing is configured and no clock signal is received, the
link LED lights amber.
→ If sync-if-timing is configured and a clock signal is received, the link
LED lights green.
5 DTE Flip the switch to DTE when connecting to the serial port of a PC with a
null modem cable. When the switch is flipped to DTE, the console port is
acting as a data terminal equipment (DTE) serial port.
Table 36: SF/CPM Field Descriptions (Continued)
Key Label/Part Sub
category
Description
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