Rap 10 Parallel Interface Problem - OKIDATA ML590 Service Manual

RAP 10 Parallel Interface Problem

START
No parallel port communication.
Is the SEL LED blinking?
Yes The printer is in the Print Suppress mode.
Disable the menu item Print Suppress if the function is not required.
End of procedure.
No Does the SEL LED light ?
Yes
No
Has the problem been resolved?
No Disconnect the cable.
Does the SEL LED light ?
Yes Change the menu item I-prime to invalid.
No Go to A
Yes
Does the SEL LED light?
No Go to A
Yes Change the menu item I-prime to invalid.
End of procedure.
A
Go to A
Press SEL key.
Is data being received properly?
Yes End of procedure.
No Check that the cable is properly connected to the Host PC and
the correct LPT port is selected.
Service Guide ML590/ML591
Chapter 4 Failure & Repair Analysis
Page: 168