Canon CLBR 460ps Service Manual page 94

CHAPTER 2
for the specified period of time, it stops the printer and notifies the video controller of the fan
motor failure. The fan lock detection of the 40-fan is not performed when the drum cartridge
drawer is open.
The followings are the conditions under which the D-CPU stops the fans.
• Sleep command is sent from the video controller.
• Fan lock is detected.
• Power-OFF is detected.
• Fixing temperature control is OFF for the specified period of time due to the door open, paper
jam, or failure.
The D-CPU checks the fixing roller temperature before turning OFF the fans. The fans are
turned OFF immediately if the temperature is lower than the specified value. The fans are dri-
ven for the specified period of time if the temperature exceeds the specified value.
Notes: 1. After the completion of print operation, the 90-fan keeps rotating at the full speed for
the specified period of time in order to exhaust heat in the printer and then starts
rotating at the half speed.
2. When the D-CPU detects the "drum cartridge drawer open", the "40- fan no contact"
error is not valid.
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