Ricoh A250 Service Manual page 838

Rev. 06/2002
A250 COPIER FIRMWARE MODIFICATION HISTORY
DESCRIPTION OF MODIFICATION
•
The detection conditions for SC546 have
been changed as follows:
•
Old:
1. Detection during warm-up, standby
and Energy Saver Mode.
2. After the fusing lamp has been on for
8 seconds, the fusing temperature fails
to rise 3°C or more within any of the 5-
second detection intervals.
•
New:
1. Detection during warm-up only.
2. After the fusing lamp has been on for
8 seconds, the fusing temperature fails
°
to rise 3 C or more within any of the 10-
second detection intervals.
•
Previously, it was necessary to enter the
SP Modes to clear SC547. It is now
possible to clear the code by turning the
main power switch "off" then "on".
•
There are two detection's for SC546.
•
1. After the Fusing Lamp has been on for
8 seconds, the fusing temperature fails
to rise 3°C or more within any of the 10-
second detection intervals.
•
2. The fusing temperature does not reach
74 degrees within 22 seconds of the start
of main power warm-up or recovery from
Energy Saver/Low Power Mode.
The machine did not clear the timer for
condition 2 when the Fusing Lamp was
heated up to 100%.
⇒
IMPORTANT: Any BICU that is installed with
firmware level 3.05 or higher may not be
downgraded to firmware level 2.34 or lower.
SM
FIRMWARE SERIAL
LEVEL NUMBER
A2505532 K May 2000
Production
A2505532 L May 2000
Production
A2505532 M Oct. 2001
Production
7-17
FIRMWARE HISTORY
FIRMWARE
VERSION
2.33
2.34
3.05
A250