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Model:
Taurus-C1/P1 (D074/D075/M044)
D
Subject:
Troubleshooting Vertical Dark Lines
From:
1st PP Tech Service Sec., PP Tech Service Dept.,
Classification:
Symptom
Vertical dark lines [A] appear on the output when printing solid images in single color mode.
Dark lines appear along the feed direction.
Cause
A foreign substance stuck in the doctor gap of the development unit causes inconsistency
in developer supply.
Action
Clean the doctor gap of the affected development unit, using the following procedure.
1. Print 3 each of full dot pattern (SP2-109-003: "26") and 1-dot halftone pattern (SP2-109-
003: "11") on either A3 or DLT in black, cyan, magenta, and green.
To make a full-green coverage page
Enter SP2-109-003 and select No.26 (Full Dot Pattern).
Enter SP2-109-005 and select "1" (Full Color).
Enter SP2-109-6 and change Density K from "15" to "0".
Enter SP2-109-8 and change Density M from "15" to "0".
Enter SP2-109-7 and -9 and make sure that Density C and Density Y are both
set to "15" (default settings).
T
echnical
Troubleshooting
Mechanical
Paper path
Product Safety
B
ulletin
Date:
13-Feb-12
Prepared by:
Part information
Electrical
Transmit/receive
Other (
)
PAGE: 1/2
No.:
RD074044
S. Sasaki
Action required
Service manual revision
Retrofit information
Tier 2
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