Landice L Series, Diagnostic And Service Manual

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100
Plug Treadmill into wall outlet.
1. No power from outlet.
2. Loose wire from line cord to SCR.
3. Blown SLOW-BLOW fuse on SCR.
P/N MDA-20 (110V)
4. Failed SCR.
Is green +12V lamp on
the SCR lit?
1. Check connections to wire harness.
P/N 70251
2. Check mounting between Faceplate and
Display Board. Reseat if necessary. If
buttons are concave or Display Board will
not stay mounted replace Faceplate. (ST’s
& PST’s ONLY)
3. Conduct Membrane bypass test
(see pages 62-64) If treadmill starts up
Replace Membrane Panel. (PT’s, CT’s &
ET’s)
4. Replace SCR.
P/N 70080 (110V) P/N 70081 (220V)
Upper display fails to light when START is pressed.
Press START button on membrane
Is green +5V lamp on the SCR lit?
Is red SERIAL lamp on the SCR lit?
Replace SCR.
P/N 70080 (110V) P/N 70081 (220V)
Replace display board
P/N 70252 Executive
P/N 70308 Cardio
P/N 70281 Pro
P/N 70424 Pro Sports
P/N 70329 Sport
NO
YES
NO
YES
NO
YES
4.1
4.2
4.3
4.4
4.5