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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
Summary of Contents for 8700 Series
Page 17: ...17 8700 COMERCIAL MOTOR PAN COMPONENTS ...
Page 18: ...18 8700 COMMERCIAL LOWER WIRING SCHEMATIC ...
Page 21: ...21 8700 HOME SST VFX PRG VFX SPRINT VFX CLOSED LOOP SPEED SENSOR ...
Page 26: ...26 8700 SPRINT 2 Safety lanyard speed control dial not push button KBWT 110 SCR motor control ...
Page 28: ...28 8700 SPRINT 1 2 UPPER WIRING SCHEMATIC ...
Page 51: ...51 8700 Series Treadmill Diagnostic Troubleshooting Guide 8700 LTD 8700 CLUB ...
Page 69: ...69 8700 Series HOME Treadmill Diagnostic Troubleshooting Guide 8700 SPRINT 1 8700 SPRINT 2 ...