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DRH
Hardware Maintenance Guide
2
Preventative maintenance improves the reliability of the DRH. You are advised to perform
scheduled maintenance yearly.
When working at heights, the maintenance personnel need to exercise caution to avoid falling
of objects, which may cause injuries or death. In addition, the maintenance personnel must
always wear helmets in the working area and avoid dangerous areas.
The items in the following checklist are not mandatory but strongly recommended.
lists the preventative maintenance items for a DRH.
Table 2-1 Preventative maintenance items for a DRH
No.
1
2
3
4
5
6
7
8
9
10
11
12
Issue 1.0(2013-04-10)
Preventative Maintenance Items for a
Item
All DRHs are properly installed and in good condition.
The cable seals at the entry points of the cabinet are in good condition.
All RF cables are free from wear, cuts, cracks, or other damage.
All RF cable connectors are sealed properly.
All RF cable conduits are in good condition.
All power cables are free from wear, cuts, cracks, or other damage.
All power cable connectors are in good condition.
All power cable conduits are in good condition.
All shield layers of power cables are in good condition.
All power cables are in good condition.
All CPRI optical fibers are free from wear, cuts, cracks, or other damage.
All screws are tightened on the cover plate of the maintenance cavity.
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2 Preventative Maintenance Items for a DRH
DRH
Table 2-1
2
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