Simple Method - Ricoh C231 Service Manual

DRUM

Simple Method

Purpose: To ensure that the CPU detects a no ink condition.
NOTE: 1) Before attempting this procedure, wipe off the ink around the ink roller.
To do this, set SP2-10 (Ink Detection) to OFF, and feed paper until ink
ends.
2) This adjustment is required every time the MPU has been replaced.
3) Normally, the simple method is sufficient. But, the oscilloscope method
is more accurate. Use the oscilloscope method if you cannot adjust the
sensor to the required value with the simple method, or if ink flooding
problems occur after adjustment with the simple method.
Standard: 4.0 ± 0.2 μsec
• Rear cover (
3.2.3)
1. Access SP6-40.
2. Turn VR1 [A] on the MPU board until the display is "4.0 ± 0.2 μsec".
NOTE: When the drum has ink inside, the machine displays "----". Do SP 2-10
again, then go back to step 1.
NOTE: If the simple method gives an inaccurate result (causing ink flooding, for
example) , it is possible that too much ink will come out into the drum
during printing. If this happens, repeat the adjustment, but use the
oscilloscope method, because this is more accurate.
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C267R015.WMF
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[A]
SM