April, 2007 ADDITIONAL INFORMATIONS
4-91
4.4.7 SYSTEM STOP CONTROL DUE TO THE TEMPERATURE LIMITATION

OVERVIEW:

1. The “System Stop Control” feature stops the machine during a copy or print job,
and “Self-checking…” is displayed on the LCD.
Conditions:
• Engine firmware v1.15.0 (B1325402L) or newer
• The temperature/humidity sensor output is 41°C (105.8F) or higher.
Other notes:
• This feature keeps the temperature of the toner in the development unit
below 50°C (122F). If this toner is at 50C or higher, the toner starts to
clump. This can cause white lines in solid image areas, or a machine
failure from toner clumps in the toner supply tube and waste toner
transport coil.
• The temperature/humidity sensor is on the K-PCU.
2. The following factors make it easy for the temperature/humidity sensor output
to reach 41°C (105.8F) or higher:
• "The temperature of the installation environment is 30°C (86F) or higher"
AND "The machine prints for 2 hours non-stop in full-color mode".
3. If the user makes 100% black and white copies/prints ONLY, this feature can
be turned OFF in SP9405-001.

ACTION:

1. Please explain the following points to end users:
• The basic meaning of the System Stop Control feature.
• T he machine will start up again after it cools down and the
temperature/humidity sensor output is 40°C (104F) or lower. This will take
about one hour.
• After the machine finishes a non-stop, full-color print job, do not turns off
the machine main power switch. Wait until the cooling fan turns off.
Note: If the user turns off the main power just after the job, the
temperature/humidity sensor output increases quickly. The next time the
main switch is turned on, System Stop Control will stop the machine.
2. If the user only makes 100% black and white copies/prints, this feature can be
turned OFF in SP9405-001.