44 | Powering Up
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To turn the power off on the power modules, use one of the following methods:
• On the DC PEMs, flip the switch to the OFF position. Make sure the AC power supplies Status LEDs
are not lit.
• On the AC Power Supplies, flip the switch to the OFF position and unplug the power cord from the
socket on the front of the Power Supply. Make sure the Input AC and Output DC LEDs are not lit (they
may flash as they power down.)
Booting to the CLI Prompt
After you supply power to the system, the following should occur:
• The fans should be operating.
• The green (online) fan tray, power module, RPM, SFM, and line card LEDs should be lit and remain lit
as long as the system is receiving power and is operational.
When you supply power to the E300 system, the system performs a series of power-on self tests. RPM,
line card, and SFM LEDs blink as the diagnostic programs run. No user interaction is required at this
point. Observe the process on your console monitor. When the boot process is complete, the card LEDs
remain online (green) and the console monitor displays the Command Line Interface (CLI) prompt.
NOTE: Do not press any keys or control sequences at any time during the boot process. Doing so may cause
the boot process to terminate.
Booting from the BOOT_USER Prompt
The initial boot operation automatically brings up the system to the runtime CLI. To interrupt the
automatic boot process, issue a break key sequence (CNTL-SHIFT 6). The console monitor will display
the default
BOOT_USER # prompt. Refer to
Appendix A, System Boot, on page 51
for instructions to
continue the boot process.
4 The fan tray LED should be green (online). Verify that air is flowing through the chassis.
If the fans are not operating properly or air is not flowing through the chassis, power off the chassis at the power
module. Ensure that the fan is properly installed. Verify the power source. If the fan impeller LED remains unlit,
replace the fan impeller.
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