+5R Interrupted when the front or right door is opened
+3.3V Supplied constantly
+12V Supplied constantly
Power-outage recovery circuit
The product features a power-outage recovery circuit that helps the product recover after an unexpected
power outage.
The power-outage recovery circuit applies +3.3V to the DC controller when the product is in the on
condition, but records a power-outage condition if ac power is unexpectedly lost. The DC controller
confirms whether the last time the product power was turned off was a normal power off event or was
because of a power outage. The DC controller then determines if it should turn off the power or start a
power on operation when power is restored.
Sleep mode operation
When the product is in Sleep Mode, the sub power supply is off and the low-voltage power supply is
on. The scanner can not be used when the product is in Sleep Mode.
Automatic damp paper detection
The product automatically detects damp paper. This helps to avoid jams caused by curling damp
paper.
The DC controller detects damp paper by measuring the resistance value of the transfer roller during a
transfer operation. Also, the DC controller records the damp condition of paper loaded in the input
devices.
The DC controller optimizes the fuser temperature control and prevents an occurrence of paper curl
when the damp paper is fed through the product.
ENWW
Engine-control system
19
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