Magnadyne M4-LCD - Manual (Page 55)

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The LCD display may fail to function normally
due to the vehicle’s battery condition, and could
require restarting the radio’s microprocessor if:
• The vehicle has been “jump started” from a
dead battery condition.
• The vehicle battery becomes very low and is
quick-charged.
• The vehicle battery is removed and replaced.
Should any of these conditions occur, simply
press and release the restart button on the radio
front panel using the tip of a ball point pen. This
will restart the radio’s microprocessor. After
pressing the restart button, you should recheck
to see if the radio functions normally.
Restart Button
If the fuse should blow, check that the wiring is
correct. If the wiring is correct, replace the fuse
with the same amperage rating as the original
(15 amp).
Replaceable Fuse
MIC
NAV
15 Amp
Replaceable Fuse
1. Open cover.
2. Lightly press the SD card into the holder to
release the card.
3. Reinsert the SD card until it clicks into place.
4. Close the cover.
5. Select the file from the SD card from the fea-
ture’s setup screen.
Rear SD Card Holder
SD Card