Transfer Unit Detection and New Unit Detection
Transfer belt unit detection:
The transfer belt unit is detected when the connector [A] is connected.
The transfer belt rotation sensor [B] detects when the transfer belt entrance roller turns. It also detects the
belt speed. To do this, it monitors the black and white stripes on the shaft. If the sensor detects that the
rotation speed is out of specification, the machine shows SC443.
Changes in temperature have an effect on the transfer belt drive roller. This can cause changes in belt
speed. Color registration errors occur if belt speed is not constant. The rotation sensor detects the speed
change and the machine keeps the transfer belt speed constant. You can enable or disable this belt speed
correction with SP 2153 8.
New transfer belt unit detection:
The transfer belt rotation sensor has a fuse when the transfer belt unit is new. The fuse is blown when the
machine is turned on. At this time, it is detected as a new unit.
6. Detailed Function Descriptions
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