OKIFAX 610, Service Handbook

Page: 21 / 147

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2.2 RELIABILITY
Table 2.2.1 shows reliability items.
Table 2.2.1 Reliability
NO. Item Specifications
1
2
3
4
5
6
7
Feeder reliability
A.D.F.
Feeder reliability
A.P.F.
Feeder separation rubber
useful time
Thermal printing head life
cycle
Battery
MTBF
Contact Image Sensor life
cycle
Jam occurrence and misfeeds in the automatic document
feeding will be less than one in 500 operations for all specificied
documents.
Multi-feed error will be less than one of 300 papers fed.
Jam occurrence and misfeeds in the automatic document
feeding will be less than one in 500 operations for all specificied
documents.
Multi-feed error will be less than one of 300 papers fed.
The separation rubber will not require replacement
for at least 15,000 documents fed.
The life of any single element on the printing head
will be greater than 3 10
5
cycles.
One cycle is defined as the sequence required to print
one black picture element ( PEL ).
The abrasion run length of the thermal printing head
will be greater than 25 km of recording paper.
“ Abrasion run ” is defined as all specified paper
running pressed against the thermal printing head.
The life of the battery is three years.
Ni-CD battery rechargeable.
The MTBF for the overall machine will exceed 30,000
hours of actual operation.
The MTBF will be measurable at a confidence level of
85% under controlled laboratory conditions.
The MTBF will be based on 40% reception 20% copy.
Exceed 1,000 hours in continuous running. under the
normal environment.