Ricoh D009 Service Manual page 311

[0: 90 copies, 1: No copies, 2: 10 copies]
90 copies: Toner end is determined if a low density image (Vref <
Vt(10)) is detected 90 times after toner near end.
If "1" is selected, the machine stops printing when the TD sensor
output drops below the prescribed level.
Select 1 or 2 if the customer normally makes copies of very high
density.
Vref Manual Setting
Adjusts the TD sensor reference voltage (Vref). Change this value after
replacing the development unit with another development unit that contains
toner.
[1 to 5 / 4 / 0.01 ]
2220*
1. Check the value of SP2-220 in both the machine containing the test unit
and the machine that you are going to move it to.
2. Install the test development unit, and then input the VREF for this unit
into SP2-220.
3. After the test, put back the old development unit, and change SP2-220
back to the original value.
Reverse Interval Drum,Transfer
Adjusts the threshold for the reverse rotation of the drum and
2221*
development/transfer motors. This helps the drum and transfer belt cleaning
operations. This reverse rotation will interrupt a multiple printing job.
Vt Display
2223*
Current
001
Displays the TD sensor output voltage for the immediately previous copy.
Average 10 copies
002
Displays the average of the most recent TD sensor outputs (from the
SM
[0 to 2000 / 0 / 100 sheets]
[0 to 5 / 4 / 0.01]
[0 to 5 / 4 / 0.01]
5-25
SP2-xxx: Drum-1
D009/D011/D012/D013