Canon DR-6080, Service Manual

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COPYRIGHT © 2003 CANON ELECTRONICS INC. CANON DR-6080/9080C FIRST EDITION OCT. 2003
CHAPTER 5 TROUBLESHOOTING
V. IMAGE TROUBLESHOOTING
Note 1: There are times when image trouble is due to the display device or printer. In such cases, the
problem cannot be corrected with the machine.
Note 2: There are times when, depending on the type of image and settings, document reproducibility
becomes poor. In such case, the image may be improved by changing the settings.
1 No image is output (completely white, completely black, completely grey, mottled)
Cause Step Check Item Result Action
'Brightness' setting 1 Is the 'Brightness' setting
appropriate? NO Change the setting.
Also change 'Contrast'
if necessary.
Reading glass 2 Is the reading glass clean? NO Clean it. Also clean the
roller if necessary.
3 Is the shading plate clean? NO Clean it. Shading plate
4 Does the shading plate jumps up to
the platen roller? NO Check the assembly of
the shading plate and
the operation of the
shading solenoid.
Connection of
reading unit 5 Are J131/J132/J135 (front side)
and J136/J137/J139 (back side) of
MAIN_DCON connected properly?
Are J2/J3/J4 (front side) and
J2B/J3B/J4B (back side) of
reading unit connected properly? NO Check all connections.
Reading unit 6 Is the problem solved when the
reading unit is replaced? YES End.
MAIN_DCON 7 Is the problem solved when
MAIN_DCON is replaced? YES End.
Table 5-501