Reliability - Casio DT-930 Hardware Manual

4.7.

Reliability

Table 4.6
MTBF of electronic parts
Backlight
Laser scanner
Key
Power switch
Trigger key
Other keys
Battery compartment lid
Power supply section
Installing and removing the
operating battery pack (or
AA-size alkaline batteries)
Mounting and removing the terminal
on/from cradle
Item
20,000 hours
5,000 hours
10,000 hours
300,000 times
1,000,000 times
300,000 times
5,000 times
5,000 times
5,000 times
Specification
14
Remark
Until the brightness of the
backlight becomes half-value of
the full brightness.
Right and Left sides
Including the lock button