TroubleshootingDiagnosticsTroubleshooting
Dust Particles on the Print Drum
Oval or round spots that repeat at a fixed spacing down the film are a signature fault, not a guess: measure the distance between them, and if it matches the print drum's diameter (110 mm), the cause is dust on the drum itself.
Applies to
DryStar 5300 (Type 5365/100)
Personnel
1 technician · Basic — visual pattern match (measure the spacing between repeated spots) against the STI1 test image, then a reprint-and-clean check on the print drum; no disassembly required for this entry itself.
Steps
3 steps
Source
DD+DIS346.05E — Drystar 5300 Repair and Service, Troubleshooting, Chapter 3.3 (item 11.4.3), p.31, Edition 1 Rev.7
Full step-by-step for Dust Particles on the Print Drum
All 3 steps are documented in the FSELIB DryStar 5300 service manual — re-authored, web-first, with the real figures from the source.
Open the full procedureRelated Diagnostics guides
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View all DryStar 5300 guidesSource: DD+DIS346.05E — Drystar 5300 Repair and Service, Troubleshooting, Chapter 3.3 (item 11.4.3), p.31, Edition 1 Rev.7. Preview re-authored by FSELIB — the full procedure with figures and steps is in the paid service manual.