H3C CR19000-20, Installation Manual

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8
Replacement procedures
WARNING!
•
When replacing removable components while the router is operating, ensure electricity safety.
•
To avoid bodily injury and device damage, follow the replacement procedure strictly to replace a
component.
•
Long-time exposure to strong air flow might cause discomfort. To avoid this hazard, do not stand
close to the air outlet vents while the router is operating. If you must be next to the router on the
air outlet vent side for an extended period, avoid the air flow or take other protective measures.
CAUTION:
Before discarding a component, delete data from the storage media such as CF cards, SSDs,
drives, and flash memories if the component has such media. To delete data from a medium, you
can format or physically destroy the storage medium.
The router uses a modular architecture, and supports removable components. You can replace a
removable component when the router is operating.
Replacing a module
CAUTION:
If you are not to install a new module in a slot after removing the old one, install a filler panel in the
slot for adequate heat dissipation and dust prevention.
Unless otherwise stated, MPUs, interface modules, interface subcards, and fabric modules are
collectively referred to as "modules" in this document.
Replacing an MPU or a fabric module
CAUTION:
Before replacing a fabric module, press the OFL button on the module. The RUN LED will flash red
at 8 Hz for 3 seconds. After the RUN LED is off, you can remove the module.
The replacement procedure is similar for MPUs and fabric modules.
To replace an MPU or a fabric module:
1. Remove the cables from the MPU or fabric module.
2. Prepare an antistatic mat to place the removed MPU or fabric module.
3. Wear an ESD wrist strap. Make sure the wrist strap makes good skin contact and is reliably
grounded.
4. Use a Phillips screwdriver to loosen the captive screws on the MPU or fabric module.
5. Open the ejector levers on the module and then pull the module part way out of the slot.
6. Supporting the module bottom with the left hand, slowly pull the module out of the slot along the
guide rails with the right hand.
7. Place the removed module on the antistatic mat.