Testing The Inverter Board - Life Fitness Lifecycle LC9500 Service Manual

Lifecycle Upright Bikes LC95, LC91, LC85, C9, C7, 95Ce, 95Ci, 93Ci, and 90C
TROUBLESHOOTING GUIDE – TESTING THE INVERTER BOARD
Special Service Tools Required: Multi-meter
CAUTION! HIGH VOLTAGE ON CONNECTORS J2 AND J3
1.
J3
Remove the Integrated System Console from the Unit.
2. Remove Rear Cover from the Console Assembly.
3. Plug in Power Supply and Remote Control to the Console
4. Press the Power On Key on the Remote Control.
5. TEST NO. 1: Place the Red Lead from the multi-meter onto Test Point 1 and the Black Lead onto Test
Point 3. Voltage should be 12 Vdc (+/- .5V).
6. TEST NO. 2: Place the Red Lead from the multi-meter onto Test Point 5 and the Black Lead to Test Point
3. Voltage should be 12 Vdc (+/- .5V)
PROBLEM
No Voltage on TP1
Voltage present on TP1
Voltage on TP1 and TP2 but NO Voltage on TP5
TEST POINT
TP 1 & 2
TP 3 &4
5
5
6
J2
SOLUTION
Replace Cable, Remote, or Main PC Board.
Replace the Inverter Board
Replace Cable between Inverter Board and Main PC Board
VOLTAGE
12 Vdc
0 Vdc
12 Vdc
0 Vdc
Not Used
DESCRIPTION
VIN
Ground
Enable
Disable
Not Used
10
Test Points
6
5
J1
4
3
2
1
PIN NUMBER
1 & 2
3 & 4
5
5
6/7/8