Landice 8700 - Manual (Page 61)

61
Upper display board fails to light when START is pressed.
Is the AC PWR light on
the relay board lit?
1.Plug a lamp into the wall outlet to confirm
it is live.
2.Check line cord condition and connections.
3.Unplug treadmill and use a multimeter to
check the fuse. If it is bad, swap with a
spare MDA-20 fuse.
4.Plug in treadmill and use a multimeter to
check for 120VAC across HOT and NEUT
terminals of relay board.
1.Check all connections to black, 9VDC power supply.
2.Confirm the black wire with a dashed white line (or a
ribbed edge) is plugged into +VDC terminal on the
relay board.
3.Confirm the solid black wire is plugged into SGND
terminal on the relay board.
4.Replace 9VDC power supply. Part # 5302
1. Unplug the 12 wire connector from the relay board and inspect all wires for a loose
fit or pushed pin. Be sure harness is routed under the elevation motor and secured
with a plastic wire zip-ty.
2. Unplug the 14 wire connector from the upper dsiplay board and inspect all wires
for a loose fit or pushed pin.Check for 9 to 14VDC from black to green wires.
Are harness wire connections intact?
Replace the upper display board. Part#
70191-CL (SPRINT), 70173-CL (SST),
70196-CL (PRG)
Is the VDC light on
the relay board lit?
4.1
4.2
4.3
Repair upper harness or replace upper
harness. Part # 72011
4.4
YES
NO
YES
NO
SYMPTOM
YES NO