Canon GP335 Service Manual page 467

15 The copy has leading edge displacement.
16 Leading edge displacement (large margin)
17 Leading edge displacement (no margin)
Cause
Original
Pick-up roller,
Feeding roller,
Separation roller
REGIST
Registration
roller, Pick-up/
feeding guide
Note: Make adjustments as follows:
• Generate a PG test pattern (6; solid black).
• Make adjustments so that the leading edge margin is 2.5 ±1.5 mm.
• Keep in mind that a higher setting increases the margin.
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Step Check
1 Is the feeder used?
2 Is the original placed correctly?
3 Has the pick-up, feeding, or
separation roller of the cassette
holder in question reached the end
of its average life?
4 Execute ADJUST>FEED-ADJ
>REGIST in service mode. Is the
problem corrected? (See Note.)
5 Is the problem noted only when
pick-up is from the lower feeding
assembly?
CHAPTER 14 TROUBLESHOOTING
Yes/No
YES Correct the leading edge
displacement according
to the Service Manual of
the feeder.
NO Place it correctly.
YES • Check each roller,
and replace if worn.
YES End.
YES Check the rollers of the
lower feeding assembly.
NO Check and clean the
following:
• Registration rollers
• Pick-up/feeding
guide
Action
14-49