Cisco Systems Cisco uBR10012 manual Replacing a Redundant AC PEM, Turning an AC PEM Off

Chapter 5 Maintaining the Cisco uBR10012 Router

Removing and Replacing AC PEM Modules

Replacing a Redundant AC PEM

Follow this procedure to replace a redundant AC PEM, which is typically needed when the FAULT LED is on and the troubleshooting steps in the “Troubleshooting the Power Subsystem” section on page 4-7do not correct the problem.

Tip If you want to replace both AC PEMs without shutting down the router, repeat this procedure for each AC PEM, one at a time. Do not use this procedure if both AC PEMs have failed; instead, use the procedure in the “Replacing Both DC PEMs” section on page 5-13.

Step 1 Remove the front cover by lifting it up slightly and then pulling it toward you.

Step 2 Turn off the AC PEM you are replacing by pushing down the power switch to the standby position (see Figure 5-18).

Figure 5-18 Turning an AC PEM Off

ALARMS

ACO

CRITICAL MAJOR

MINOR

STATUS

FAIL

PERFORMANCE ROUTING ENGINE

ALARMS

ACO

CRITICAL MAJOR

MINOR

STATUS

FAIL

PERFORMANCE ROUTING ENGINE

	AC
	SWITCH
	AC
ACINPUT	SWITCH
200-240V
13A 50/60Hz
	ACINPUT
	200-240V
	13A 50/60Hz

AC

SWITCH

ACINPUT
200-
13A	240V
	50/60Hz

77142

Caution Do not power off both AC PEMs, or the system shuts down and all data traffic stops. Power off only the AC PEM you are replacing.

Step 3 Unplug the AC-input power cable from the power plug on the front panel of the AC PEM. For safety, also unplug the other end of the power cable from the AC-input power source.

Tip For true redundant power protection, ensure that you are using a separate AC-input power source for each AC PEM.

Step 4 Use the screwdriver to loosen the captive screws on the AC PEM you are removing. Then pull the PEM from the chassis by using the handle on the faceplate (see Figure 5-19). Set the AC PEM aside.

	Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
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