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DocuPrint N24, N32 and N40 Service Manual 7-53 Repair Analysis Procedures (RAP)
Skips/Smears
Inspect the 2 on / 2 off ladder chart test patterns. The patterns should be free from skips and
smears and lines should exist in the lead edge to trail edge (process) direction.
1
The test prints are free from skips and smears.
Y N
|
Go to step 4.
2
Refer to (Figure 7.33c), Test Prints and perform the following in sequence:
• There should be no spots larger than or equal to 0.5 mm visible on the prints.
• There should be no more than 1 spot measuring between 0.4 and 0.5 mm visible on the
print.
• There should be no more than 16 spots measuring between 0.25 and 0.4 mm visible on
the print.
• Any spot measuring less than 0.25 mm is acceptable.
The prints are free of spots or the spots that are visible fall within the acceptable range.
Y N
|
Go to RAP 7.42.
3
Go to
Other Print Defects
checkout on the next page.
4
Perform the following in sequence to resolve a Skips or Smears problem:
• Inspect the Drive Assembly for damaged and worn gears. Replace (REP 4.9), if
necessary.
• Inspect Main Drive Motor for smooth operation and wear of drive gear. Replace (REP
4.9), if necessary.
• Replace EP Cartridge (PL 7.2), if problem still exists.
Figure 7.33i. 2on/2off ladder chart test pattern
Smear-
dark area
Skip-white
area in
Ladder
Chart