Unable To Change Audio; No Audio To Headphone; Unable To Receive Any Stations When Using Cable; Lcd Screen Illuminates But Is Blank - Life Fitness SC95 Service Manual

Independent Stairclimbers SC95, SC91, SC85, S9i, 95Si, 93Si, 90S, and 95Se
TROUBLESHOOTING GUIDE
SYMPTOM
Load resistance varies
during operation

Unable to change audio

level
No audio to headphones
Unable to receive any
stations when using cable
TV picture has "snow like"
appearance
LCD screen illuminated but
blank

LCD screen is dark

Screen doesn't respond to
touch
Erratic touch screen
operation
PROBABLE CAUSE
Faulty alternator control board
Faulty display console
Faulty Keypad
Faulty interface board
Faulty headphone
Faulty headphone jack
Faulty headphone jack cable
Faulty computer board
Faulty interface board
Air/cable setting may be incorrect
Faulty coaxial cable
Air/cable setting may be incorrect
Faulty coaxial cable
Faulty LCD backlight
Faulty backlight power inverter
Faulty LCD screen
Faulty computer board
Faulty LCD backlight
Faulty backlight power inverter
Faulty touch screen
Faulty computer board
Touch screen not properly calibrated
8
CORRECTIVE ACTION
Verify connections between display
console and alternator control board.
Substitute a working alternator control
board. If necessary, replace alternator
control board.
Verify voltages at display console
connections. Substitute a working
display console. If necessary, replace
display console.
Perform keypad diagnostic.
If necessary, replace Interface board.
If necessary, replace headphone
assembly.
If necessary, replace headphone jack
assembly.
If necessary, replace headphone cable
assembly.
If necessary, replace computer board.
If necessary, replace Interface board.
Refer to TV configuration.
If necessary, replace coaxial cable.
Refer to TV configuration.
If necessary, replace coaxial cable.
If necessary, replace touch screen.
If necessary, replace inverter board.
If necessary, replace touch screen.
If necessary, replace computer board.
If necessary, replace touch screen.
If necessary, replace inverter board.
If necessary, replace touch screen.
If necessary, replace computer board.
Calibrate touch screen.