Ricoh JP5000 Service Manual page 73

1 July, 1998
Auto Quality Start Mode
Auto Quality Start is done if the user does not select Quality Start mode. (It can be
disabled with a user tool.)
In Auto Quality Start mode, the idling
motion depends on how long the
machine was not in use and on the
temperature detected by the
thermistor [A] in the drum.
The CPU detects a low temperature
condition if the thermistor [A] reports
approximately 15 °C or lower. If the
detected temperature is 28 °C or
higher, it is a high temperature
condition.
The number of drum idling rotations
depends on temperature and period of
machine inactivity, as shown in the
following table.
NOTE: SP3-91 to 3-93 can change
the number of rotations for each of these conditions.
Period/
Temperature
High (28 °C
or higher)
Normal (15 to
28 °C)
Low (15 °C or
lower)
NOTE: The drum rotation speed during idling is fixed at 90 rpm.
Less than 4 4 to 24 hours
hours
0
0
0
2-45
24 to 72 hours
0 0
0 15
15 45
DRUM
[A]
C229D111.WMF
Over 72 hours
15
15
45