Contents
Purpose/kind
Section
Main
code
Sub
code
Description
Ref. page
Adjustment
Developer unit
25
2
(Operation/procedure)
After 3 minutes from start of stirring of the DV unit after the main motor
rotation, toner density is sampled 16 times during 8 sec, and the average
value is stored as the toner density reference value in the RAM.
With this reference value as the threshold value, the toner density is control-
led.
4-5
(Note) Do not perform this simulation except for when replacing the developer
with a new one.
If this simulation is performed in the other case, overtoning or undertoning
may occur, resulting in a poor copy quality.
Process
8
2
Used to check the voltage of the main charger and the transfer charger in the
manual and auto copy mode.
Grid voltage
–750
±
10V
The main charger and the transfer charger unit are turned on for 30 sec in the
manual and auto copy mode.
3
Used to check the voltage of the main charger and the transfer charger in the
photo copy mode.
Grid voltage
–459.9
±
10V
The main charger and the transfer charger unit are turned on for 30 sec in the
photo copy mode.
4
Used to check the voltage of the main charger and the transfer charger in the
manual and auto copy mode..
Grid voltage
–634.4
±
10V
The main charger and the transfer charger unit are turned on for 30 sec in the
toner save mode. (manual and auto copy mode)
7
Used to check the separation charger voltage.
7-30
The separation charger unit is turned on for 30 sec.
9
Used to check the voltage of the main charger, the transfer charger, and the
separation charger.
The main charger unit, the transfer charger unit, and the separation charger
unit are turned ON for 30 sec.
SPF unit
48
3
Used to adjust the horizontal magnification ratio. (When the SPF is used.)
The adjustment is performed by changing the SPF scan speed (SPF motor).
7-18
(Operation/procedure)
When the simulation key operation is performed, the currently set value is
displayed on the COPIES SELECTED display.
Enter the adjustment value with the numeric key and press the print button,
and the value will be stored in the main PWB RAM.
It is required to make a copy and adjust. However, the rough input value can
be obtained from the following formula:
Input value = Currently set value + Copy magnification ratio x 10
Copy magnification correction rate = (Document length – Copy image length)
÷
Document length x 100 [%]
Setting
Specifications
26
1
Used to set options.
(Operation/procedure)
When the simulation key operation is performed, the currently set machine
number is displayed on the COPIES SELECTED display.
Enter the code number corresponding to the machine conditions and press
the print button, and the value will be set.
Code No.
Machine installed
01
SPF
04
Zooming machine
20
Personal counter
Add each code of an installed machine and enter the total number.
3mi n
8sec
DV.Bias
M.M
500msec
8 – 7