Epson DFX-8500 service manual Start

TROUBLESHOOTING

3. Carriage operation is normal, but the self-test is printed incorrectly (1/3).

START

Perform the self-test.

Does the			No
printer perform
self-test ?
	Yes			Are the connectors
				listed in NOTE 1
Is there				inserted securely?
		Yes
any dot missing
or dragging ?					Yes

No

Reinsert correctly.

No

No

Is the

fault corrected?

Check printhead cable continuity. Visually check printhead pins. Replace any bad part.

Yes	Is the
	fault corrected?
	No

Perform the bidirectional printing adjustment.

A

Yes

END

END

NOTE 1: Check the following connectors:

Three head junction board connectors to printhead CN1 of C204 MAIN board to head junction board CN2 of C204 MAIN board to C204 DRV-B board CN1 of C204 DRV-B board to printer mechanism

Rev. B 5-7