SCIFIT ISO7000R, Service Manual

Page: 11 / 82

11
IV. Electrical Troubleshooting
A.
Electrical Troubleshooting Table
Problem Possible Reasons Solutions
No lights are showing
on display at idle. Unit is not in use. Start rotating cranks (at least 13
RPMs). Unit will stay lit for 15
seconds after use unless a wall
pack is in use.
No lights on display
when unit is pedaled. Faulty lower PCB.
Faulty upper PCB.
Bad Telco or ribbon cable
connection.
Brake shorted to frame. See flowchart. (P. 15-16)
See flowchart. (P. 15-16)
See flowchart. (P. 15-16)
See flowchart. (P. 15-16)
Lights on display are
dim. Faulty lower PCB. Replace lower PCB. (P. 32-35)
Lights on display are
frozen.
Faulty upper PCB. Replace upper PCB. (P. 24-31)
Lights on display
flicker and / or go dead. Bad Telco or ribbon cable
connection.
Faulty lower PCB.
Faulty upper PCB. Fix connection or replace cable.
Replace lower PCB. (P. 32-35)
Replace upper PCB. (P. 24-31)
Lights on display go
out as soon as you
stop pedaling or go to
change direction. Battery is weak.
Bad brake to lower PCB
connection. Charge battery w/ wall pack. If
problem persists, replace
battery. (P. 32)
Fix connection.
Display resets after
starting a program. Bad Telco or ribbon cable
connection.
13 RPMs not maintained.
Faulty upper PCB. Fix connection or replace cable.
Maintain 13+ RPMs to keep
display lit.
Replace upper PCB. (P. 24-31)