Dell Force10 E600i E600 TeraScale Installation Guide - Page 46
Removing and Replacing RPMs, Line Cards, or SFMs
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www.dell.com | support.dell.com Figure 10-3. DC PEM Label Voltage 'good' LED Status LED Handle Studs 48V in Status Over Current Protector CC-E600-PWR-DC Finger Barrier FN00095a CAUTION - Use copper conductors only -48/-60Vdc 75A Locking Screws NOTE: If there is a PEM failure (the PEM status LED is not lit or amber, major alarm LED is lit, and audible alarm sounds), the entire PEM must be replaced. There are no field serviceable parts inside the PEM unit. WARNING: Do not remove the PEM safety cover until the power supplied by the remote power source is OFF. WARNING: To be completely sure that power has been turned off, use a voltmeter to measure the voltage across the negative (-) and positive (+) source DC leads. The measurement across the positive and negative leads should be zero (0) volts before you proceed with the replacement. To remove a PEM: Step Task 1 Ensure that the remote power source is in the OFF position and that the PEM status LED and Voltage LED are off. 2 Switch the Over Current Protector (located on the PEM front panel) to the OFF position. 3 Loosen the retaining screw and remove PEM safety cover. 4 Disconnect power cables attached to the PEM. 5 Slide the PEM out of the slot. 6 If you are replacing a PEM, go to Power Supply. If you are not replacing the PEM, replace the empty slot with a PEM blank. Removing and Replacing RPMs, Line Cards, or SFMs WARNING: Do not remove a panel blank unless you are ready to install a line card, RPM, or SFM into that slot. If you remove a card, immediately replace the empty slot with a panel blank. Blanks are required to control airflow and electromagnetic interference. WARNING: Electrostatic discharge (ESD) damage can occur when components are mishandled. Always wear an ESD-preventive wrist or foot-heel ground strap when handling RPMs, SFMs, or line cards. After you remove the original packaging, place RPMs, SFMs, and line cards on an antistatic surface. 46 | Removing and Replacing Parts