On-Line/Off-Line Mode Malfunction; Incorrect Operation With Host Computer - Epson FX Series Product Support

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EPSON PRINTER
2.12 ON-LINE / OFF-LINE MODE MALFUNCTION
Disconnectpower. Removetop cover (Procedure 4.1). Reconnectcontrol panel
(Procedure 4.2). UsingTABLE 2.4 for the values and the test points, check the
resistance of the switches on the control panel. Press and release the switches to
insure that the readinqs change.
Switch readings are all correct.
YES NO
Replace control panel (Procedure 4.2).
Problem is solved.
YES NO
Return to
the initial
checks and
continue.
2. Replace main board (Procedure 4.6)
Problem is solved.
YES NO
i
Replace control panel (Procedure 4.2).
3. Return to the initial checks and continue.
2-13
REPAIR ANALYSIS PROCEDURES
2.13 INCORRECT OPERATION WITH HOST COMPUTER
1. Remove top cover(Procedure4.1). Reconnect control panel
(Procedure 4.2). Insure that all the switch settings on the main board
are correct. Adjust if necessary.
Problem issolv^.
YES NO
Replace the interface cable.
Problem is solved.
YES NO
Replace the main board (Procedure 4.6).
Problem is solved.
YES NO
Have the customer check the host computer print
commands.
2. Return to the initial checks and continue.