B710 B720 B730 User’s Guide > 123
Important!
• Do not touch any parts inside the printer.
• Ensure that the drum/toner cartridge is firmly set.
• After opening cover A, remove any dust or stains inside
the printer with a dry clean cloth.
8. Close cover A securely.
9. If installed, lower the offset catch tray to its original
position.
Caution
If you continue to print with the offset catch tray up, this may
cause a paper jam. Always use the printer with the tray down.
10. Turn the printer back on.
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