Dell PS4100, Hardware Maintenance Manual

Page: 29 / 47

PS4100 Hardware Maintenance Guide Maintaining Control Modules
23
2. Holding the orange button down, swing the black release latch towards you. This starts to eject the
control module from the array.
Figure 16 Removing a Control Module
3. Place the control module on a flat surface where it will be protected from electrostatic charge. To avoid
damage, do not place anything on top of the control module.
4. If you are replacing a failed control module, remove the microSD card from the failed control module
and install it in the replacement control module. This will make sure that the new control module is
running the correct firmware. See Replacing the MicroSD Card on page 24 .
Caution: Do not operate an array with an empty control module slot.
Return the failed control module in the packaging in which the replacement module was shipped. Contact
your PS Series support provider for information about returning hardware.
Installing a Control Module
You can install a control module without shutting down the array.
Caution: Do not mix control module types in an array.
Control modules are installed horizontally in the array, with the Ethernet ports on the left and the serial port
on the right. See Figure 17 .
Figure 17 Correct Control Module Orientation
Facing the rear of the array, the upper control module is CM0 and the lower control module is CM1.
To install a control module:
1. Attach an electrostatic wrist strap or a similar protective device. See Protecting Hardware on page 1 .