Ricoh A250 Service Manual page 682

5. ROM HISTORY
5-1. FIRMWARE MODIFICATION HISTORY
Initial Production
Corrects the following:
• A German text character was incorrectly being
displayed in the User Tools Menu.
⇒
Corrects the following:
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.
It was necessary to enter SP Mode to clear SC547.
•
It is now possible to clear the code by turning the
main power switch off then on.
Corrects the following:
The detection conditions for SC546 have been
•
changed as follows:
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°C
within 22 seconds of the start of main power
warm-up or recovery from Energy Saver / low
Power Mode.
The machine did not clear Timer Condition 2 when
•
the Fusing lamp was heated up to 100%.
SM
Description (P/N B00 5532) Version
1.01 B
1.03 C
1.04 D
1.05 E
5-1
Rev. 07/2000
Production
1st Production
Dec. 99
Production
May '00
Production
May '00
Production
B001