Ricoh D009 Service Manual page 322

SP2-xxx: Drum-3
Toner End Status
2977*
Indicates the toner near end or end condition.
001 Near End
002 End
Charge Counter
Set the number of pages to print after toner and carrier initialization before
the charge input is increased to compensate for deterioration over time in
2980*
the polarity of the carrier.
The strength in the polarity of the carrier in the toner will eventually
decrease and cause lower charge output. Setting the charge output to
increase after a specified number of copies can compensate for this effect.
D009/D011/D012/D013
[0 to 10 / 0 / 1 ]
0: Not detected
1: Detected by SP2975-001
2: Vt (10) - Vref ≥ 0.2 and Vsp ≥ 0.6
3: Vt (10) - Vref ≥ 0.45
4: 0.45 > Vt (10) - Vref ≥ 0.2 and toner end counter ≥ 300
5 to 10: Not used
[0 to 10 / 0 / 1 ]
0: Not detected
1: Vsp ≥ 2.0
2: Toner end counter ≥ 90 when SP2213-001 is set to "0".
3: Toner end counter < 90 and Vt (10) > (Vref + 0.3) when
SP2213-001 is set to "0".
4: When SP2213-001 is set to "2"
5: Vsp ≥ 0.9 when SP2213-001 is set to "2"
6: Special order
7 to 10: Not used
[0 to 1000000 / 0 / 1 sheets ]
5-36 SM