151
m Drum Section
chap.2
2Timing of the LED and the ink motor operation is
as follows. The ink motor works during printing
(driving output signal).
Ink detection PCB unit
LED CN1-2
No ink Light out +5V
Ink Light up 0V
1. LED Display and Output Signal on the
Ink Detection PCB Unit
2When the electric capacity variation between the
detection needles on the ink detection PCB Unit
and GND is over the threshold value, the LED on
the ink detection PCB Unit lights up and the ink
signal (0V) is output.
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