Epson DFX-8500 service manual

DFX-8500

3. Carriage operation is normal, but the self-test is printed incorrectly (2/3).

A

Check the print head coil resistance.

Is the

printhead resistance

correct?

Replace the C204 MAIN and./or C204 DRV-B board.

No

Yes

Check the printhead drivers.

Check the printhead drivers.
					Are the		No	If the printhead drivers
								are OK, replace the
					drivers OK?
		No	If the printhead drivers					printhead.
Are the
			are OK, replace the			Yes
drivers OK?
			printhead.
	Yes			Replace the C204 MAIN and./or
				C204 DRV-B board.
Replace the C204 MAIN and./or
C204 DRV-B board.			.

		Is	No
	Yes	the print OK?
Print OK?
		Yes
No		END

Refer to Section 5.3, Repair of the Printer Mechanism.

Refer to Section 5.3 Repair of the Printer Mechanism.

B

B

5-8 Rev. B