Cut Console Cable Voltage Chart - Horizon Fitness RST 5.6 Service Manual

Ref# Wire Color
1 Black
2 Brown
3 Red
4 Orange
5 Yellow
6 Green
7 Blue
8 Purple
9 Grey
10 White
11 Pink
12 Light Blue
Note: All voltages taken after individual wire cut
24 | rst 5.6 & rct 7.6 service manual 2007_rev1.0
R S T5. 6 & R CT 7 . 6 S e a r s S e r v i c e M a n u a l 2 0 0 7
C u t C o n s o le C a b le V o l t a ge C h ar t ( D C V o l t s )
Function Voltage at UCB Voltage at MCB Physical Symptoms
Incline VCC 0.0 vdc
Incline Pot 2.5 vdc
Incline GND 2.5 vdc, grounded at
MCB not UCB.
Digital GND 0.0 vdc
Digital GND 0.0 vdc
RPM 5.0 vdc
Power Voltage(to UCB) 0.0 vdc
Power Voltage(to UCB) 0.0 vdc
Speed Command "0.0 vdc b/f start
(PWM) 0.36vdc aft start
increases as console
speed increased"
Drive Motor Relay "5.0 vdc b/f start
0.0 vdc aft start"
Incline Down "0.0 vdc b/f start
5.0 vdc if press incline
down"
Incline Up "0.0 vdc if at 0%
5.0 vdc if not at 0% or
at console height"
B1: Incline VCC
B2: Incline Pot
B3: Incline GND
B4: Digital GND
B5: Digital GND
B6: RPM
B7: Power Voltage (to UCB)
B8: Power Voltage (to UCB)
B9: Speed Command (PWM)
B10: Drive Motor Relay
B11: Incline Down
B12: Incline Up
2.5 vdc After Start pressed constant down incline.
0.0 vdc After Start pressed constant down incline.
0.0 vdc, grounded at Constant up incline. In Hardware Test, motor moves up and down.
MCB not UCB. Incline value started low and went down to 0 but not up past 10.
Value changes very slowly.
0.0 vdc If one removed, no issues. If both removed: UCB does not turn on.
0.0 vdc
0.0 vdc Everything works in normal mode but the console does not register a
speed in Hardware Test or Auto Calibration
17 vdc If one removed, no issues. If both removed: UCB does not turn on.
At UCB green measures 0.46 vdc, white 1.4 vdc, all others 0.0 vdc.
17 vdc
"0.8 vdc b/f start No belt movement, MCB relay clicks. When measuring MCB voltage,
0.7 vdc aft start no there is a slight belt movement, then stops
change as console
speed increased"
"1.4 vdc b/f start No belt movement, no click from MCB relay.
1.4 vdc aft start"
0.0 vdc Up incline functions, no down incline. If incline then decline, motor
does not move again until past incline point. Ex. If incline to 2.0
% then back down to 0%, the motor will not move until 2.5 %. In
Hardware Test, on;ly up incline, value increases, does not decrease.
0.0 vdc Down incline functions, no up incline. In Hardware Test, down incline
functions until value at 0, no up incline. Similar phenomenon to
cut Pink wire if incline stopped not at 0%.