Electrical Timing - Ricoh C226 Service Manual

DRUM SECTION

7.10 ELECTRICAL TIMING

2nd Drum Position Sensor
No Ink Signal
Ink Supply Sol.
No Ink Indication
T1: After all the ink has been consumed and the No Ink Signal is HIGH,
the ink supply solenoid will energize at the rising edge of the second
drum position sensor signal. The ink supply solenoid turns off when
the No Ink Signal goes HIGH.
T2: If after the ink supply solenoid had energized and the drum had
turned a further 20 rotations and the no ink signal remains LOW, the
No Ink indicator will blink.
When the "0" key and "Reset" key are pressed while the No Ink
indicator is lit, the drum will turn 40 rotations to pump more ink.
When the No Ink Signal goes HIGH during the 40 drum rotations, the
ink supply solenoid is de-energized.
C226 2-64 SM