NEC N8, Service Manual

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NEC Confidential & Proprietary
INTRODUCTION TO SERVICE LEVEL 2
The tasks at Service Level 2 will have to :
1. Receive the fault report and faulty equipment from Service Level 1.
2. Verify the faults reported at Level 1 and check the doubtful modular sub-units.
3. Identify the faulty modular sub-unit.
4. Disassemble the equipment. Temporarily replace the faulty modular sub-unit with a
good one to see if this clears the trouble. Specify the faulty modular sub-unit in the
faulty report.
5. Send the fault report and faulty modular sub-unit together to Service Level 3. In
certain cases, replace the faulty modular sub-unit in the equipment with the good one
for quick repair.
6. Receive back the repair report, the repaired modular sub-unit from Service Level 3 and
re-install it in the equipment. Or keep this repaired modular sub-unit for next replacement,
if the faulty modular sub-unit had been replaced with a good one in step 5.
7. Perform the final test with a workable SIM card. Fill out the repair report.
8. Return the equipment to Service Level 1 with the repair report.