Oki 4M - Manual (Page 82)

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3 Paper size error
• Is the paper of the specified size being use?
• No Use paper of the specified size.
• Yes Is paper sensor E (paper) operating normally?
• No Replace paper sensor E (paper) or clean the inlet sensor on the high-voltage
power supply board.
• Yes Is the paper sensor (exit) operating normally?
• No Replace the paper sensor (exit) or clean the outlet sensor on the high-voltage
power supply board.
• Yes Replace the high-voltage power supply board.
Exit roller
Paper sensor (exit)
Heat roller
Transfer roller
Feed roller
Toner
sensor
Assy
Paper sensor E (manual feed)
Paper sensor E (paper)
Hopping
roller
Paper feeding direction