Ricoh A-P4, Service Manual

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(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.
2223 Vt Display Vt = Output Voltage of the TD Sensor
001
Vt Prev Copy Vt of Previous Copy
Displays the TD sensor output voltage for the immediately previous print.
002
Vt Prev 10 Ave Vt of Previous 10 Copies (Averaged)
Displays the average of the most recent TD sensor outputs (from the previous 10 prints).
003
Vt Change Rate Vt Rate of Change
Displays the rate of change in the TD sensor output.
004
Vt Gain Vt Gain
Displays the GAIN value used to calculate the on time for the toner supply motor.
005
Image Pixel Cnt Image Pixel Count
Displays the image pixel count.
2301
Trans Curr Adj Transfer Current Adjustment
Adjusts the current applied to the transfer belt during printing the 5 phases listed below.
001
Image Face 1st Side of Paper
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
μ
A / 45 / 1
μ
A step]
002
Image Back 2nd Side of Paper
Printing the second side of the paper (image area) during duplex printing.
[20 ~ 100
μ
A / 40 / 1
μ
A step]
003 Lead Edge Face
Leading Edge. Face
5. Service Tables
196
5