Service manual

5. MAINTENANCE
Service Manual CNS-9701 5.1
We recommend the periodic replacement of the following components according
to the expected life span.
To Be Replaced Periodically
Maintenance Check Items and Schedule
Perform this maintenance check once every six months.
A maintenance check sheet is provided at the end of this section. Make a copy of
this check sheet before using it.
The check items are grouped as follows:
- External and Connection
- Display
- Sound
- Operation
- Data Storage
- Network Communication
- Recorder
- Laser Printer
- UPS
- Safety
NK Code No. Description Expected Life Span
677402*
636509**
Hard disk Every 2 years (or 20,000 working
hours if the working time is
managed). If a defective sector is
found on the hard disk within the
one year, immediately replace it
with a new hard disk.
636545
Fan for chassis Every 2 years (or 20,000 working
hours if the working time is
managed).
* Only for MU-971RA main unit of Vorax5001
** For others