Landice 8700 manual Symptom

61

SYMPTOM

Upper display board fails to light when START is pressed.

4.1

Is the AC PWR light on the relay board lit?

YES

	1.Plug a lamp into the wall outlet to confirm
	it is live.
	2.Check line cord condition and connections.
NO	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.

4.2

Is the VDC light on the relay board lit?

YES

	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.
NO
	3.Confirm the solid black wire is plugged into SGND
	terminal on the relay board.
	4.Replace 9VDC power supply. Part # 5302

4.3

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?

4.4

YES

Replace the upper display board. Part# 70191-CL (SPRINT), 70173-CL (SST), 70196-CL (PRG)

NO

Repair upper harness or replace upper harness. Part # 72011