Ham MFJ-413 - Self Test

To Next Page

To Previous Page

MFJ-413/417 Instruction Manual Pocket Morse Code Tutor

code speed and the group length can be increased starting with the previous

settings.

Self Test

A Self Test is included to perform testing of the buttons, the non-volatile

memory circuitry and integrity, and the audio circuitry. At any time, turn off the

power to stop the Self Test; however, power should NOT be turned off during

steps involving the non-volatile memory as it could corrupt the memory.

For MFJ-413

. This test is initialized by:

1. Turn off the power to the Tutor.

2. Press and hold both the Speed and the Set/Play buttons while turning the

power on. The Self Test starts by sending the copyright message

"COPYRIGHT 199X MFJ ENTERPRISES, INC. VERSION X.XX"

at 13 WPM

confirming the audio circuitry is working properly. Release the buttons

before the message is finished.

3. Each button is automatically tested for shorts to ground.

4. Press the Speed button to test it for proper connection. The Tutor responds

with a beep. Release the button.

5. Press the Group button to test it for proper connection. The Tutor responds

with a beep. Release the button.

6. Press the Set/Play button to test it for proper connection. The Tutor

responds with a beep. Release the button within one second.

7. When all is okay, a repetitive message

"PASS"

is sent at 13 WPM. However,

if something is wrong a repetitive message such as

"GROUP FAIL"

is sent at a

slower speed of 5 WPM.

8. Turn off the power after confirming the audio has good quality.

Failure Message Meanings:

•

SPEED FAIL

Speed button is shorted or improperly connected.

•

GROUP FAIL

Group button is shorted or improperly connected.

•

SET FAIL

Set/Play button is shorted or improperly connected.

For MFJ-417