Oki 2400 manual Service Checks, Abnormal Noise Service Check

24xx

Service Checks

Abnormal Noise Service Check

Check the entire printer for loose parts.

	FRU	Action
1	Ribbon Cartridge	Remove and reinstall the ribbon cartridge.
2	Printhead	Disconnect the printhead cable(s).
		Run the print test (do not fold or damage the
		cables during the test). Go to “Print Test” on
		page 3-3.
		Replace the printhead, if the noise is gone.
3	Carrier Motor	Disconnect the carrier motor connector CN2
	Ribbon Drive	from the logic board. Turn the printer off and
	Mechanism	then on.
		If the abnormal noise is gone, look for a
		problem with the carrier motor or ribbon drive
		mechanism. Go to “Carrier Service Check”
		on page 2-16.
4	Paper Feed	Disconnect the paper feed motor CN1 from the
	Mechanism	logic board.
		Perform the Print Test. Go to “Print Test” on
		page 3-3.
		If the abnormal noise is gone, look for the
		problem in the paper feed mechanism.

Diagnostic Information 2-13