Oki 4M - Manual (Page 81)

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[JAM error]
2 -2 Paper feed jam
• Does a paper feed jam occur when the power supply is turned on?
• Yes Is the jammed paper on paper sensor E (paper/exit)?
• Yes Remove the jammed paper.
• No Is paper sensor E (exit/paper) operating normally?
• No Replace paper sensor E (exit or paper).
• Yes Replace the high-voltage power supply board.
• No Has the paper arrived at paper sensor E (paper)?
• No Is the feed roller rotating?
• No Check the gear block.
• Yes Is the EP unit set correctly?
• No Set the EP unit correctly.
• Yes Check the gear block.
• Yes Has the paper arrived at the paper sensor (exit)?
• Yes Is the paper sensor (exit) operating normally?
• No Replace the paper sensor (exit).
• Yes Replace the high-voltage power supply board.
• No Check the gear block.
2 -3 Paper exit jam
• Does a paper exit jam occur when the power supply is turned on?
• Yes Is the jammed paper on the paper sensor (exit)?
• Yes Remove the jammed paper.
• No Is the paper sensor (exit) operating normally?
• No Replace the paper sensor (exit).
• Yes Replace the high-voltage power supply board.
• No Check the gear block or replace the eject roller.