Horizontal Band Deletions - Olivetti DR N17 Service Manual

7.5.6 Horizontal Band Deletions

Sample Image
PRINTER
PRINTER
PRINTER
Procedure
1 Replace paper in paper tray. Problem solved.
Y: Use new paper (and ask the customer to keep paper stock in a dry place).
N: Go to step 2.
2 The HVPS has faulty output voltage. Refer to 5.2.1.22 HVPS (Developer Bias DC) Operation .
Y: Go to RAP 7.4.24 HVPS Failure.
N: Go to step 3.
3 Use Diagnostic Mode 1, Main Motor, to check the Drive Assembly. The transmission gears turn
the EP Cartridge gear.
Y: Go to step 4.
N: Go to 7.3.4 "Motor Failure" Power Off/On (U1).
4 The Bias Transfer Roll (BTR) Assembly is contaminated.
Y: Replace the BTR Assembly.
N: Go to step 5
5 Generate a test print and switch OFF the printer in the middle of the print cycle. Inspect the toner
image on the Drum surface. There is a complete toner image on the Drum surface.
Y: Go to RAP 7.4.24 HVPS Failure, and ensure the BTR output is normal.
N: Go to step 6.
6 Install a new EP Cartridge.The problem is solved.
Y: Go to Final Actions.
N: Go to step 7.
7 The band deletions occur at approximately 62.0mm intervals. There are scratches or
contamination on the Heat Roll or Pressure Roll surface.
Y: Clean the Heat Roll/Pressure Roll or replace the Fuser Assembly.
N: Replace the Fuser Assembly.
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Definition
Deletion is an area of the print where the image is missing or extremely light.
Horizontal band deletions are missing bands which extend across the short
dimension of the page (at the right angle to the direction of paper travel).
687200Q