Sony C9000 service manual 113

3Paper Size Error

•Is paper in the specified size used?

	No	Use paper that complies with the specification.
		Yes Is the paper jammed at the entrance MT sensor or at the paper width sensor?
		Yes Remove the jammed paper.
▼	Yes	Does the lever of the entrance MT sensor operate normally?
•
	No	Replace the defective sensor lever.
▼	Yes	Does the entrance MT sensor work properly?
•
		(Operate the sensor lever and verify the signal on the FSENS connector pin on the engine
		board (K73 PWB).)
		Pin 4: Entrance MT sensor
	No	Check cable connection, or replace the sensor board (R71 PWB).
▼	Yes	Does the lever of the entrance belt sensor operate normally?
•
	No	Replace the defective sensor lever.
▼	Yes	Does the entrance belt sensor work properly?
•
		(Operate the sensor lever and confirm that the sensor works properly, verify the signal on
		the FSENS connector pin on the engine board (K73 PWB).)
		Pin 6: Entrance belt sensor
	No	Check cable connection or replace the sensor board (R71 PWB).
▼	Yes	Do all the paper-size detecting switches on the size detecting board (B73 PWB) work right?
•
		(Press the paper-size detecting switches and verify the signal on the engine board PSIZE
		connector pins.)
		Pin 3: Paper size detector 1
		Pin 4: Paper size detector 2
		Pin 5: Paper size detector 3
		Pin 6: Paper size detector 4
	No	Check cable connection, or replace the size detecting board (B73 PWB).
▼	Yes	Check cable connection, or replace the engine board.
•

41388601TH Rev.2 113 /