MP3900X Series Router Installation Manual
Router Maintenance
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6-11
affected, which further brings potential dangers for the stable running of the router.
To ensure the long-term stable running of the router, the maintenance personnel should
de-dust all the service boards comprehensively and regularly, once for two years
recommended.
The de-dusting process is as follows:
Step 1: Prepare a standby board card for the board card to be de-dusted when the maintenance
personnel de-dusts the board card.
Step 2: Replace the board card to be de-dusted. For details, refer to
Step 3: Dedust the replaced board card.
⚫
There are many methods to de-dust the board card. However, the overall principle
is that the physical and electrical specifications of the board card cannot be
damaged.
⚫
When using a vacuum cleaner, use a clean and dry anti-static soft brush to gently
remove the dust on the surface of the board card and meanwhile use the suction
nozzle of the vacuum cleaner to aim at the anti-static brush, which achieves the
brushing and absorbing the dust at the same time. De-dusting using a vacuum
cleaner is easy to operate and of low cost conserving. But this method cannot
de-dust thoroughly and cannot effectively remove the noxious gas attached on the
surface of the board card.
⚫
When using the cleaning agent, use anhydrous, non-corrosive, non-conductive, and
high-volatile cleaning agent dedicated for the circuit board to de-dust the board
card, IPA (isopropyl alcohol) for example. The advantage of using cleaning agent is
thorough and can effectively remove the harmful particles attached on the surface
of the board card. This method is characterized with difficult operation and high
cost.
6.3.3
De-dust Optical Interface and Pigtail Connector
To ensure the long-term stable running of the router, de-dusting the optical interface
and pigtail connector of the router is necessary.
The de-dusting process is as follows:
Step 1: Remove the optical fiber connected to the optical interface when cleaning the optical
interface.
