Ricoh A-P4, Service Manual

Page: 196 / 381

2210 ID Sensor
001
Pattern Interval
Sets the interval between ID sensor pattern prints for toner control. This setting allows adjustment
for customers who do not make many prints daily. Selecting zero cancels creation of the ID
sensor pattern.
[0 ~ 200 / 10 / 1 print step]
The ID sensor reads the sensor pattern and outputs this reading as Vsp and sends it to the CPU
where it is used to calculate Vref (Vsp/Vsg = Vref).
If the total count exceeds 10 during a print job, for example “15”, the pattern is created and
read at completion of the print job.
002
Large Job
Sets the interval between ID sensor pattern prints with the halftone pattern added. The ID sensor
reads the halftone pattern and outputs it as Vsm to the CPU. The Vsm value is used in the
calculation Vsm/Vsg to adjust the power to the LD.
[2 ~ 999 / 200 / 1 print step]
This SP executes at 200 prints (or at the adjusted count) regardless of whether the print job has
completed. This method of adjusting the power output and the amount of light emitted by the
LD ensures standard quality images by ensuring that prints do not become faint, slows the
deterioration of the OPC drum over time, and reduces scatter.
2213 Toner End Count
Selects the number of prints that can be printed once the machine has detected the toner near-
end condition.
[0 ~ 2 / 0 / 1 step]
0: 90 prints
1: No prints
2: 10 prints
Select 1 or 2 if the customer normally makes prints of high density.
2220
Vref Manual Set Vref Manual Setting
Adjusts the TD sensor reference voltage (Vref). Change this value after replacing the develop-
ment unit with another development unit that contains toner.
[1.00 ~ 5.00 V / 4.00V / 0.01 step]
Service Program Mode Tables
195
5