Hardware Installation Manual 58 Document #: LTRT-28030
6.6 Replacing the CPU Module
The following procedure describes how to replace the CPU module.
Warning: Power off the device before replacing the CPU module.
To replace the CPU module:
1. Remove the faulty CPU module:
a. Power down the device by disconnecting the power cord from the power source,
and then unplugging the power cord from the power inlet on the power supply
module. If your device is installed with two power Supply modules, disconnect
both of them from the power source.
b. Remove all cables connected to the ports on the CPU module.
c. Remove the two Philips screws on both sides of the module that secure the
module to the chassis, using a Philips screwdriver.
d. Hold the front part of the module with one hand and place your other hand under
the module to support it. Gently pull the module out of the slot, keeping it at a 90-
degree angle to the backplane.
Figure 6-17: Removing CPU Module on Rear Panel
2. Install the new CPU module:
a. Hold the front part of the module with one hand and place your other hand under
the module to support it.
b. Orientate the module as shown above and align the module with the guiding rails
in the chassis slot.
c. Gently slide the module into the slot until it has engaged with the chassis
backplane.
d. Secure the module to the chassis, by tightening the two Philips screws on the
module. You can use a Phillips or flathead screwdriver.
e. Attach the network cables to the module.
f. Power up the device.
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