Instruction Manual

Preventive maintenance
DN00283717 © Nokia Corporation 7 (26)
Issue 2 DRAFT 1 - en Nokia Proprietary and Confidential
2 Preventive maintenance
The Nokia InLite system requires a minimum of maintenance and supervision.
Should an alarm condition occur, its location can readily be determined, using the
laptop PC, then quickly corrected.
To ensure the continued integrity of the InLite system, certain maintenance tasks
must be performed at regular periods.
2.1 Periodic checks
Visual inspection and cleaning
Check that the following conditions are satisfied:
1. The Main Unit (MU) is firmly secured in position.
2. The MU is not damaged in any way and that the lock performs its function
correctly.
3. The MU is clean and free from dirt. (Clean the surfaces as necessary.)
4. The green LEDs on in all plug-units inside the MU (i.e., there are no alarm
conditions).
5. Each Remote Unit (RU) is properly secured in its position.
6. The installed RUs are not damaged.
7. The red LED (Fault) indicator on the RU is not lit.
8. The RU is clean and free from dust or dirt. (Clean the surfaces as
necessary.)
9. Exposed cables (RF, optical and power) are not damaged or under stress.
2.2 Action plan
It is recommended that an action plan be prepared if a fault occurs in MU or RUs.
The purpose of this plan is to correct the fault and if necessary, replace any faulty
unit minimal traffic disruption.