OKI C532dn

Check condition of the paper running path

Check item	Checking method	Action in case of NG
Paper running path of the front unit	Check if paper is jammed or not in the paper running path.	Remove the jammed paper.

Check condition of the mechanical parts

Check item	Checking method	Action in case of NG
Hopping sensor and IN sensor lever check	Check the sensor lever shapes and operations for any problem.	Replace the sensor lever(s) with proper one(s).
Check the separator assemblies of the feed roller, the pickup roller and the tray.	Check if any foreign materials such as paper dust on the surface of the feed roller or of the pickup roller or not.	Remove the foreign material.
	Check if the feed roller or the pickup roller has worn out or not.	Replace the separator assemblies of the feed roller, pickup roller and tray.

Motor operation check

Check item	Checking method	Action in case of NG
Paper feed motor	Confirm that the paper feed motor works normally by using the Motor & Clutch Test of the self-diagnostic mode.	Replace the CU/PU board or the paper feed motor.
Paper feed motor driver	Pull out the CU/PU board HOP connector, and check the following at the side of the connector. Between 1pin – FG: Several MΩ Between 2pin – FG: Several MΩ Between 3pin – FG: Several MΩ Between 4pin – FG: Several MΩ	Replace the CU/PU board.

Clutch operation check

Check item	Checking method	Action in case of NG
Feed clutch and regist clutch	Confirm that the feed clutch and regist clutch works normally by using the Motor & Clutch Test of the self-diagnostic mode. Pull out the cassette for the rollers to be seen, and check operation.	Replace the CU/ PU board or the feed clutch or regist clutch.

Check the system connection

Check item	Checking method	Action in case of NG
Paper feed motor drive cable	Check the connection condition of the cable. Check if the connector is connected in the half-way only or not, and check if the connector is inserted in a slanted angle or not. Check also that cables are assembled without any abnormality.	Connection state normally. Replace the cable.
	Pull out the CU/PU board HOP connector, and check the following at the side of the connector Between 1pin – FG: Do not short-circuit Between 2pin – FG: Do not short-circuit Between 3pin – FG: Do not short-circuit Between 4pin – FG: Do not short-circuit	Replace the cable with the good cable that normalizes the connection condition.
Feed clutch cable cable and regist clutch cable	Check the connection condition of the cable. Check if the connector is connected in the half-way only or not, and check if the connector is inserted in a slanted angle or not. Check also that cables are assembled without any abnormality.	Connection state normally. Replace the clutch.
Feed clutch	Pull out the CU/PU board HOC connector, and check the following at the side of the connector. Between 1pin – FG: Do not short-circuit Between 1pin – 2pin: About 240Ω	Replace the clutch and properly assemble appropriate parts.
Regist clutch	Pull out the CU/PU board REC connector, and check the following at the side of the connector. Between 1pin – FG: Do not short-circuit Between 1pin – 2pin: About 240Ω	Replace the clutch and properly assemble appropriate parts.
Paper feed motor	Pull out the CU/PU board HOP connector, and check the following at the side of the connector. Between 1pin – 2pin: 3.4Ω or 5Ω Between 3pin – 4pin: 3.4Ω or 5Ω	Replace the Paper feed motor.