MFJ MFJ-418 - Troubleshooting Common Issues; Technical Assistance and Support

MFJ-418 Pocket Morse Code Tutor Instruction Manual
16 © 1996-2006 MFJ Enterprises, Inc.
Failure Message Meanings:
•
EEPROM FAIL Non-volatile memory circuitry is improperly connected.
•
MEMORY FAIL Non-volatile memory is bad.
•
NEXT FAIL Next button is shorted or improperly connected.
•
PREVIOUS FAIL Previous button is shorted or improperly connected.
•
SELECT FAIL Select button is shorted or improperly connected.
•
VPP FAIL Logic line Vpp is not pulled low to ground.
Troubleshooting
Q. Why is the display flashing or fading?
A. The battery is weak, replace it with a new one.
Q. Why is nothing shown on the display when the power is on?
A. The battery is probably dead, replace it with a new one.
Q. Why does the overall speed change after playing a session?
A. When playing with the Interactive mode enabled, the overall speed might
have accidentally changed on-the-fly when either the Next or the Previous
button is pressed before
"HALT" appears. If so, the on-the-fly speed feature
can be disabled in the Setup mode.
Q. Why can't I change the speed on-the-fly?
A. This feature is disabled, go to the Setup mode and enable it.
Q. Why can't I enable the Farnsworth mode?
A. The overall speed is at its maximum of 80 WPM.
Technical Assistance
If you have any problem with this unit first check the appropriate section of this
manual. If the manual does not reference your problem or your problem is not
solved by reading the manual you may call MFJ Technical Service at 662-323-
0549 or the MFJ Factory at 662-323-5869. You will be best helped if you have
your unit, manual and all information on your station handy so you can answer
any questions the technicians may ask.
You can also send questions by mail to MFJ Enterprises, Inc., 300 Industrial
Park Road, Starkville, MS 39759; by facsimile (FAX) to 662-323-6551; or by
email to techinfo@mfjenterprises.com. Send a complete description of your
problem, an explanation of exactly how you are using your unit, and a complete
description of your station, and the unit’s firmware version number.