![background image](http://html.mh-extra.com/html/canon/np6412/np6412_service-manual_62358328.webp)
CHAPTER 11 TROUBLESHOOTING
COPYRIGHT © 1999 CANON INC. CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
11-42
2.
Adjusting the Intensity of the Scanning Lamp
You must perform this adjustment whenever you have replaced any of the following:
• DC controller PCB
• Composite power supply PCB (See p. 11-41.)
• Scanning lamp
Figure 11-261
2) Turn off the AE mechanism, and set the Copy Density Adjustment lever on the control panel to
the middle.
3) Place the Test Sheet on the copyboard.
4) Select '38' in service mode.
• The display will indicate '38'.
5) Press the Copy Start key.
• The existing setting will flash.
Making Adjustments
• If you have replaced the DC controller PCB or the composite power supply PCB,
1) Select '38' in service mode.
• The display will indicate '38'.
2) Press the Copy Start key.
• The existing setting will flash.
3) Enter the value recorded on the service label using the +/- key.
4) Press the AE key to store the new setting.
• If you have replaced the scanning lamp,
1) Set the Density correction dial (VR107) to the middle.
Caution:
If you have performed this adjustment, be sure to perform AE adjustment.
Summary of Contents for NP6412
Page 6: ......
Page 12: ......
Page 34: ......
Page 46: ......
Page 48: ......
Page 92: ......
Page 144: ......
Page 176: ......
Page 178: ......
Page 192: ......
Page 194: ......
Page 220: ......
Page 222: ......
Page 256: ......
Page 258: ......
Page 282: ......
Page 284: ......
Page 286: ......
Page 384: ......
Page 388: ......
Page 414: ......
Page 424: ......
Page 430: ......
Page 432: ......
Page 434: ......
Page 484: ......
Page 492: ......
Page 502: ......
Page 506: ......
Page 516: ......
Page 599: ...PRINTED IN JAPAN IMPRIME AU JAPON ...