Ricoh A-P3 Service Manual page 142

PRINTER ENGINE SERVICE MODE
SP2 Mode Number
2210* 02 Large Job
2213* 01 Toner End Count
2220* 01 Vref Manual Set
Change this value after replacing the development unit with another unit that
contains toner.
1. Check the value of SP2220 in 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 V
SP2220.
3. After the test, put back the old development unit, and change SP2220 back to the
original value.
2223* 01 Vt Previous Copy
02 Vt Previous 10 Averaged
03 Vt Change Rate
04 Vt Gain
05 Image Pixel Count
2301* Transfer Current Adjustment
01 Image Face
(1st Side of Paper)
Function and [Setting]
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.
Selects the number of prints that can be printed
once the copier 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.
Allows manual adjustment of Vref, the targeted
voltage for the TD sensor.
[1.0 ~ 5.0 V / 4.0 V / 0.01 V step]
Displays the TD sensor output voltage for the
immediately previous print.
Displays the average of the most recent TD
sensor outputs (from the previous 10 prints).
Displays the rate of change in the TD sensor
output.
Displays the GAIN value used to calculate the
on time for the toner supply motor.
Displays the image pixel count.
Adjusts the current applied to the transfer belt
during printing the 5 phases listed below.
Printing the first side of the paper (image area).
If the user uses thicker paper, the current may
have to be increased to ensure sufficient transfer
of toner.
[20 ~ 100 µA / 45 / 1 µA step]
5-14
6 November, 2001
for this unit into
REF