PRINTING QUALITY PROBLEMS
SM 4-21 B273
Trouble-
shooting
4.5.3 HORIZONTAL BLACK BANDS
Description: Dark or blurry horizontal stripes appear
periodically on the output print.
Cause Solution
1. Bad contacts on the toner cartridge high-
voltage terminals.
2. The following rollers may be damaged:
• Charge roller in the toner cartridge.
• Supply roller in the toner cartridge.
• Development roller in the toner
cartridge.
• Transfer roller.
1. Clean all high-voltage terminals on the
toner cartridge and set frame. Remove
toner and dust particles.
2. Clean the gear on the OPC. Replace
the toner cartridge if the problem
persists.
3. Clean the transfer roller gear. Replace
the transfer roller if the problem
persists.
4.5.4 BLACK/WHITE SPOTS
Description: Dark, white, or blurry spots appear periodically
throughout the output print.
Cause Solution
1. Developer is coated with paper dust or
other matter.
2. The OPC drum surface is damaged.
3. Transfer roller has reached end of life.
1. Print several OPC cleaning mode prints.
Run the self-test 2-3 times.
2. Examine the OPC drum surface and
remove any particles with a soft lint free
cloth. Replace the toner cartridge if the
problem persists.
3. Replace the transfer roller if use has
exceeded the 60 K PM replacement
interval.
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
B273T915.WMF
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
B273T916.WMF
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