Canon NP6012 Service Manual page 132

—————_—_—_——__LSEE_L__ SOP ATIONS ANC TIMING
5. Image Leading Edge Margin (registra- 6. Primary Corona Output Voltage
tion on timing) Correction (model without automatic
Make this adjustment whenever you indication of drum unit replacement
have replaced the following: time only)
¢ DC controller PCB Execute this adjustment whenever you
have replaced the following:
Make sure that the leading edge margin * DC controller PCB
is 1.0 and 4.0 mm when the Test Chart is © drum unit
copied.
Making Adjustments
+ After Replacing the DC Controller PCB
1) Select '32' in service mode; then, using
You must make sure that the image the +/- key, enter the setting 'PRIMARY'
leading edge non-image width is within recorded on the service label attached
the standard before making this adjust- behind the control panel in the
ment. : count/ratio indicator, and press the AE
key.
¢ The setting may be between 0 and 30.
v 2) Turn off and then on the copier.
== = 4 ° After Replacing the Drum Unit
1.0 to 4.0 [mm] 1) Select '32' in service mode; then, using
the +/- key, enter the setting 'PRIMARY'
Figure 3-809 recorded on the service label attached
behind the control panel in the
count/ratio indicator, and press the AE
key.
* The setting may be between 0 and 30.
Making Adjustments
1) Select '30' in service mode; then, using
the +/- key, change the setting in the
count/ratio indicator, and press the AE 2) Tum off and then on the copier.
key.
oe seuing ey De benveen 0 and ae: 3) After making the adjustment, record the
* The default is 14. ; :
new setting on the service label attached
Relationship between the Setting and the Image behind the control panel.
Leading Edge Non-Image Width
Increases
Decreases
Table 3-804
2) After making the adjustment, record the
new setting on the service labe}! attached
behind the control panel.
Figure 3-810
COPYRIGHT © 1995 CANON INC. CANON NP6012/NPSO12F/NP6212 REV.1 SEPT. 1985 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-87