Epson Scan 2500 service manual Repair of the Printer Mechanism

EPSON Stylus Scan 2500						Revision A
			Table 3-4. Repair of the Printer Mechanism (cont.)
	Symptom	Condition		Cause	Check Point	Solution
				Head FFC is out of	Check if the head FFC on the board or	Connect the FFC properly.
				connection.	carriage is connected surely.
				The FFC is disconnected	Check the FFC by using a tester.	Replace the FFC.
				inside.
		The carriage moves,
	Printing is not
					Install a new I/C and perform the self-
		but no printing is		I/C is defective.		Replace I/C.
	performed.
					test.
		performed.
					If the condition does not improve even
				Head unit is defective.	after 2or 3 times cleaning operation,	Replace the head unit.
					replace the head unit and perform the
					self-test.
				Print head surface is not	Perform the cleaning operation several
				clean.		Perform the cleaning.
					times and check printing.
				(dot missing)
		Only a particular dot
					Perform the cleaning operation several	If condition does not improve
		causes abnormal		The head unit is defective.		even after the cleaning, replace
		printing.			times and check printing.	the head.
				Capping absorber is		Replace the head absorber if it is
				touching the head	Check the head absorber visually.
						deformed.
				surface.
				Print head surface is not	Perform the cleaning operation several	Perform the cleaning.
				clean. (dot-missing)	times and check printing.
	Abnormal printing			The head FFC is	Check the FFC by using a tester.	Replace the head FFC.
				disconnected inside.
		A dot is not printed		The head FFC is out of	Check if the head FFC on the board or	Connect the FFC properly.
		occasionally.		connection.	carriage is connected surely.
					Perform the cleaning operation several	If condition does not improve
				The head unit is detective.		even after the cleaning, replace
					times and check printing.
						the head.
				I/C is defective.	Install the new I/C and perform self-test.	Replace I/C.
				The head FFC is out of	Check if the head FFC on the board or	Connect the FFC properly.
				connection.	carriage is connected surely.
		Black specks or dots.
				The head unit is detective.	Check connection with the head FFC.	Replace the head if there is no
						connection problem with the FFC.

Troubleshooting Printer Related Troubleshooting 67