Oki OKIOFFICE84 Maintenance Manual page 161

(3) Others
No.
1 Document feeder
2 Recording paper
feeder
3 MTBF
4 Battery (for RTC)
40672201TH Rev. 4
Table 6.1 Reliability
Item
Jam occurrence and misfeeds in the automatic document
feeder will be less than one in 500 operations for all specified
documents.
Jam occurrence in the automatic paper feeder will be less than
one in 1,500 operations and misfeeds will be less than one in
500 operations for all specified recording paper.
The MTBF for the overall machine will exceed 3,000 hours of
actual operation.
The MTBF will be measured at a confidence level of 95% under
controlled laboratory conditions.
The MTBF will be based on 50% transmit and 50% receive
activities.
5 years
Lithium battery : Not rechargeable
Specifications
6 - 2