KIP 7170K, Service Manual

Page: 143 / 865

K134sm4e3 4-39
2. Make a Test Print making reference to [8. 3 Pattern Print].
As the Negative Developer Bias is supplied to the Developer Roller during the Test Print, check
the voltage with the multi-meter.
The standard value of the Negative Developer Bias for each type of media is:
Plain paper -180 +/-5V against the ground (-200 +/-5V : CND Model)
Tracing paper -180 +/-5V against the ground (-200 +/-5V : CND Model)
Film
-180 +/-5V against the ground (-200 +/-5V : CND Model)
If the above values are not satisfied, go to the next step.
3. If the value (voltage) is -230 +/- 5V, Developer Bias may be automatically adjusted by Density
Compensation Process.
(As the CND model machine does not use “Density Compensation Process”, it is set as “OFF”.)
Enter [Clear/Reset]
Æ
“0006 Bias3 Count”
.
The voltage “-230V +/- 5V” is correct when the value shows
“1” / “2” / “3”
.
current Auto Adjustment Level
Supposed
Developer Bias
0 -180 +/-5V
1 / 2 / 3 -230 +/-5V
Refer to [8.11.3 Reset of Bias Adjustment by Density Compensation Process] for checking the
current Auto Adjustment Level.
If not satisfied, go to the next step for manual Developer Bias adjustment.
4. Select the Adjustment Mode, select each of following Sub Mode Numbers, and
change the setting value so that the output voltage satisfies -180 +/-5V (CND Model : -200V)
against the ground .
Refer to [8.4.3.11 Developer Bias (No.022 to 027)] for the detail.
Sub Mode No. Contents
022 Developer Bias (Plain paper)
023 Developer Bias (Tracing paper)
024 Developer Bias (Film)
025 Developer Bias (Plain paper : Special)
026 Developer Bias (Tracing paper : Special)
027 Developer Bias (Film : Special)