Replace A 2U Power Cooling Module - Seagate Exos X 4006 Series Hardware Installation And Maintenance Manual

a. Examine the tested good CM to make sure it is undamaged with pins that are straight, not bent.
b. Facing the rear of the storage enclosure, orient the CM with the open latch identically to the one you just removed.
c. Use one hand to support the weight of the CM and the other to guide it into the empty CM slot.
d. Exerting even pressure to the center, gently press it against the midplane until the latch closes and it locks in place.
3. After verifying the connectors are all undamaged, reconnect all cables as they were connected before.
4. Verify that the Hardware normal LED is lit green on the replaced CM after properly inserting and seating it in the empty
slot.
5. Facing the front of the storage enclosure, verify that the Power On LED is green and there are no fault conditions.

Replace a 2U power cooling module

The 2 auto-ranging power cooling modules (PCMs) provide power and cooling to storage enclosure modules and components.
The power supply portion of the PCM provides power to the storage enclosure within 100-240VAC at 50-60Hz. The PCM uses
standard industrial wiring with line-to-neutral or line-to-line power connections.
The 764W DC PCM input range is -40V to -72V DC with 25 to 14A current. Each PCM has 6 LEDs to identify various states: 4 as
primary thermal and power status indicators and another 2 that used to indicate battery status but are no longer in use. When
no LEDs are on, there is no AC power to the PCM. The asterisk (*) indicates a fault condition.
99 Chapter 10 In-service field maintenance for 2U enclosures
Figure 68 Controller module (SAS 4-port version)