Notes: If you do not want to install a new module, apply a blank plate over the slot
to avoid dust falling into the chassis.
Replacing an SSM/IOM/SIOM/QSM/Bypass
The following takes IOM as an example to introduce how to install an SSM, IOM, SIOM, QSM or
Bypass. To replace an IOM, take the following steps:
1. Wear an electrostatic discharge (ESD) strap around your bare wrist and connect the strap to
an ESD point on the chassis. See ESD Prevention.
2. Use a cross screwdriver to loosen IOM screws until they pop out.
3. Rotate the lever to outside till the lever head is out of the expansion slot.
4. Hold the module with one hand and pull it straight out of the expansion slot along the guide
rail.
5. Put the removed module into an antistatic bag or on a flat antistatic table.
6. Install a replacement module (see Installing an SSM/IOM/SIOM/QSM/Bypass).
Chapter 5 Hardware Maintenance and
Replacement
134
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