Ricoh B286 Service Manual page 337

3 Used Toner Bottle Full Detect
Limits the length of paper that can be printed after the machine detects that the
used toner collection bottle is full.
[1 to 50/15/1 m]
2927 Toner (Near) End Detection DFU
These SP's set the levels for the toner near-end and toner end levels.
1 Near End Level
3 End Level
2928 Toner End Recovery
Recovery starts after the toner cartridge is replaced when a toner-end condition
exists.
[0.130 to 0.215/0.145/0.005 V]
In the toner-end recovery process:
! The machine writes an ID sensor pattern on the surface of the drum.
! The ID sensor reads the density of the ID sensor pattern and converts it to an
electrical signal (Vsp).
! The machine compares the Vsp value with Vsg, which is read from the bare
sursection of the drum (Vsg/Vsg=Vref)
! If Vsp/Vsg < Vref (the value of this SP setting), recovery is completed and
the machine goes back to normal operation.
SM
Sets the level for toner near end detection. (Vsp/Vsg =
Vend).
[0.140 to 0.275/0.145/0.005 V]
Sets the Vsp/Vsg level for toner end detection. The ID
sensor must detect this value three times in succession to
detect toner end. The machine stops when toner end is
detected.
[0.150 to 300/0.165/0.005 V]
5-67
SP2-xxx Drum
B286/B289