Canon PC920 Service Manual - Page 112
AE Adjustment VR102, VR103
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CHAPTER 4 IMAGE FORMATION SYSTEM 3. AE Adjustment (VR102, VR103) If you have replaced the scanning lamp or the AE sensor PCB, make adjustments as follows: Operating Procedure Before Starting the Work • Obtain a newspaper showing more or less even print. (Do not use one with many photos or large headings.) • Obtain five sheets of white sheets of paper. • Check to make sure that the intensity of the scanning lamp has been adjusted when you have replaced the scanning lamp. • Set the density correction switch (SW101) to the middle setting. If the machine is not equipped with a density correction switch, set the density adjusting lever to the middle setting. 1) Short JP103 and JP104 on the DC controller PCB with a screwdriver or the like. J104 J103 Figure 4-116 4-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)