Dell Force10 E300 Installing and Maintaining the E300 System - Page 24
Removing a DC PEM, Pwr In, Status
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www.dell.com | support.dell.com LED Status Status Pwr In OK fn00118ch4 CC-E300-PWR-DC Status Pwr In OK Green-no fault detected Amber- under voltage Unlit-circuit not energized or circuit breaker open Green-no fault detected Amber- polarity of (+) and (-) are reversed in external cables Unlit-no power or power is under voltage Removing a DC PEM The left chassis PEM slot is labelled "0" and the right chassis PEM slot is labelled "1". For full redundancy, each PEM must be attached to a dedicated circuit breaker. For example, PEM "0" connects to circuit breaker "0" and PEM "1" connects to circuit breaker "1". WARNING: Prevent exposure and contact with hazardous voltages. Do not attempt to operate this system with the safety cover removed. Step Task 1 Switch the Over Current Protector (located on the PEM front panel) to the OFF position. 2 Turn off power to the PEM. Ensure that the remote power source is in the OFF position and that the PEM Status LED and Pwr In OK LED are off. 3 Loosen the retaining screw and remove PEM safety cover (see Figure 5-3). 4 Disconnect power cables attached to the PEM. 5 Slide the PEM out of the slot. 6 If you are not replacing the PEM, replace the empty slot with two blank panels. 24 | Installing Power Modules