Ricoh K-C3.5L Service Training page 69

Toner Near-end/End Detection - Details
If Vt level 6 is detected 5 consecutive times, near-end
is detected.
Toner is added after the copy job:
Recovery after adding new toner
Slide 69
No additional notes.
If supply recovers to Vt level 5, near-end is cancelled.
Otherwise, toner end occurs after 50 copies
If Vt level 7 is detected 3 consecutive times, toner end
is detected immediately.
The machine must recover to Vt level 5 after a new
bottle has been added
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Model K-C3.5L