Version 7.0 75 Mediant 3000
Hardware Installation Manual 6. Hardware Maintenance and Repair
6 Hardware Maintenance and Repair
This section describes the following hardware maintenance and repair operations:
Electrostatic discharge protection – see Section 6.1 on page 75
Replacing blades and RTMs – see Section 6.2 on page 76
Replacing the Power Supply modules – see Section 6.3 on page 79
Replacing the Power Entry modules – see Section 6.4 on page 81
Replacing the Fan Tray module – see Section 6.5 on page 82
Replacing the Air Filter – see Section 6.6 on page 83
Replacing 155-Mbps Optical SFP Transceiver Modules – see Section 6.7 on page 85
Before performing any maintenance procedures, read the following warning bulletin:
Electrical Component Sensitivity
Electronic components on printed circuit boards are extremely sensitive to static
electricity. Normal amounts of static electricity generated by clothing can damage
electronic equipment. To reduce the risk of damage due to electrostatic discharge
when installing or servicing electronic equipment, it is recommended that anti-
static earthing straps and mats be used. For ESD protection procedure, see
Section 6.1 on page 75.
6.1 Ensuring ESD Protection before Maintenance
Procedures
The procedure below describes how to protect the device from electrostatic discharge
(ESD). This must be done before removing or installing chassis modules.
Note:
Place all removed components in an anti-static bag.
To protect the device from ESD:
1. Locate the two ESD connectors on the chassis. One is located on the right rack-
mounting flange; the other is located on the rear panel of the Fan Tray module.
2. Attach yourself to an ESD wrist strap and then connect the other end to one of the
ESD connectors (mentioned in Step 1), using a banana plug or an alligator clip.
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