Xerox DocuColor 12/DCCS50, Руководство по обслуживанию

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3-41
DocuColor 12/DCCS50
IQ 44 Registration Checkout Procedure, IQ 45 Wrin-
Image Quality
Reissue
IQ 44 Registration Checkout Procedure
This procedure is used to isolate the cause of Registration problems for which no faults are
declared.
Initial Actions
• Check for bent or damaged baffles and guides in the Registration area.
• Check for loose, missing or stretched springs in the Registration area.
Procedure
For Trays 1-5, check the following parts for wear, slipping, damage, or contamination. Replace
any parts that are questionable in the order listed until the problem is resolved.
•
Registration Roll ( PL 2.15 )
• Pinch Roll ( PL 2.15 )
• Pinch Roll( PL 2.16 )
• Pre Registration Roll ( PL 2.16 )
• Pre Registration Chute ( PL 2.16 )
IQ 45 Wrinkle RAP
This procedure is used when the copy/print contains wrinkles or closely spaced ‘waves’.
Initial Actions
NOTE: Wrinkles (or waves) occur when there is non-uniform stress in the paper while it passes
though the Fuser Assembly. These stresses can be caused by the following: paper type or con-
dition (old light-weight paper is worse), uneven oil distribution front to rear (OB to IB), differ-
ences in contact arc front to rear (OB to IB), and the type of image density (dark solid area
images, especially 2-sided copies/prints are worse).
• Ensure that the customer is using a fresh supply of copy paper.
• If oil streaks are present, go to the IQ 31 Fuser Oil Streak RAP .
• If the problem occurs only when printing, ensure that the image density is being controlled
at a maximum of 70% for each color.
• Rotate the original 180 degrees.
Procedure
NOTE: When performing the Fuser Nip adjustment, attempt to make both rear (IB) and front
(OB) values equal to each other.
Perform the Fuser Nip Adjustment
ADJ 8.1.1 . If the problem remains, perform this adjustment
again and reset the nip to the low end of the specification at both ends. If the problem still
remains, perform the following actions until the problem is resolved:
• Check the HFSI status of the following fuser components: Heat Roll, Pressure Roll, Exter-
nal Heat Roll, and the Oil System (Donor Roll Assembly). Replace any item that is over
threshold.
• Ensure that the Color Gradation Check located in the Image Quality Specification section
of the Image Quality Supplement is within specification. If it is not, perform
ADJ 9.1.1 Max
Setup.
• If the problem occurs when the copy paper is being fed LEF, try feeding the paper SEF.
• Try using fresh 24 lb Xerox COLOR Xpressions paper (NASG) or 90 gsm Colortech +
paper (ESG). If the problem is resolved, recommend it to the customer.
• If the problem occurs only when making 2-sided copies with high solid area density
images on both sides, it may be necessary to make single-sided copies to minimize or
eliminate the problem.
• If the problem occurs only when using plain or coated light-weight paper, it is recom-
mended that a heavier weight paper be used to minimize the problem.