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Xerox DocuPrint N17 Service Manual
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Repair Analysis Procedures (RAPs)
7.5.9 Light Prints
Initial Action
Ensure that the print density is set to the default value (3). Execute Diagnostic Mode 3, Print Density.
Procedure
1 Replace the paper in the 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 Inspect the Drum ground path shown below. The printer is grounded all through the ground path.
• Drum > Drum shaft pin > Plate Earth > HVPS > LVPS.
Y: Go to step 3.
N: Complete the Drum ground path.
3 Check the laser beam path from the Drum to the Laser Assembly for contamination or obstacle.
The laser beam path is contaminated or obstructed.
Y: Remove the contamination or obstacles.
N: Go to step 4.
4 The HVPS DB (DC) has faulty output voltage. Refer to
5.2.1.23 HVPS (Developer Bias AC)
Y: Go to
N: Go to step 5.
5 The Bias Transfer Roll (BTR) Assembly is contaminated.
Y: Replace the BTR Assembly.
N: Go to step 6.
6 Generate a test print and switch OFF the printer in the middle of the print cycle. Inspect the toner
image on the Drum surface. A complete toner image shows on the drum surface.
RAP 7.4.24 HVPS Failure, and check if the BTR output is normal.
N: Install a new EP Cartridge.
Definition
The overall image density is lighter than normal, or extremely light.
PRINTER
PRINTER
Sample Image
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Содержание DocuPrint N17
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