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123 HP OJ Pro 8730 Printer – Clear the jam from rear printer:

• Turn the power OFF of the printer.
• Disconnect the power cord from the rear of the printer.
• Unplug the power cord from the wall outlet.
• Remove the duplexer by pushing the button on the either side of the two-sided printer.
• Gently remove the jammed paper or the bits of paper from the rollers in the printer.

123 HP OJ Pro 8730 Printer – Check the Duplexer:

• If you dont find any jammed paper in the rear access area push the button on the latch on the rear of the duplexer.
• Remove any jammed paper from the duplexer.
• Close the duplexer door.
• Gently push the duplexer into the printer.
• Connect the power cord back into the wall outlet
• Press the power button to turn the printer ON.

123 HP OJ Pro 8730 Printer – Clear paper tray:

• Remove all the paper from the output tray.
• Raise the output tray.
• Turn OFF the printer.
• Disconnect the power cord from the printer.
• Find the jammed printer in the paper tray.
• Lower the output tray. 

123 HP OJ Pro 8730 Printer – scanner issues:

• The common issue that occurs with the scanner setup,
• Either the document gets misplaced on the scanner glass.
• The lid of the scanner top might not be closed properly.
• The same side of the scanned document may be scanned for the same time.
• The scanned document may not be saved.
• Or the scanning process may be stopped in the middle.

 123 HP OJ Pro 8730 Printer – Resolving scanner issues :

• Make sure you do the following,
• Place the document in the right corner of the scanner glass.
• Close the scanner lid properly before you start to scan.
• Make sure you do not scan the same side of the document.
• Save the document once you scan it.
• Scan the document again if the printer had stopped scanning in the middle.