Image Quality
3-10 11/06 FaxCentre 2121/2121L
IQ 7 Black Lines and Black Streaks RAP
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer supply
while performing tasks that do not need electricity. Electricity can cause death or injury. Moving
parts can cause injury.
Description
• Straight thin black vertical lines occur in the printing.
• Straight black vertical bands occur in the printing.
Table 7: Black Lines and Black Streaks
Checks and Causes Solutions
1. Is BTR damaged, scratched or dirty? 1. Install a new BTR (PL 12).
2. Is drum scratched or dirty? 2. Install a new Drum Cartridge (PL 13).
3. Is fuser roll scratched or dirty? 3. Install a new Fuser Assembly (PL 10).
4. Is the CIS window dirty? 4. Clean the CIS window.
5. Is the problem eliminated after checks have
been made up to step 4?
5. Install a new Main PBA (PL 5).
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