Oki 3321, 3320 specifications

0Data receiving failure

Is the SEL LED blinking?

No Yes

Printer went into the print suppress mode.

Wait until printer to receives DC1 code, or change the menu item “Print suppress-Ineffective” when the function is not required.

Is the I/F RS232C?

No Yes

To step 10-2

Does the SEL LED light up?

Yes No

Press SEL key.

Remedied?

No Yes

Does the printer receive data properly?

NoYes

10-1

To step 10-1 End

Disconnect I/F cable.

Does the SEL LED light up?

No Yes

Change menu item I-prime to invalid, or check for defective cable.

Replace Driver board.

Remedied?

No Yes

End

Replace I/F cable.

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