MCB LED Indication
Note:
Use a
110v mode:
95v 140v
220v mode:
210v 250v
Note:
For MCB
Note: For PCB
When we designed the lower control board (MCB) for our treadmills we placed status lights (LEDs) on it to aid in field diagnosis and repair. The following is an overview of what these indicator lights mean and what can be checked with them in the field.
AC Light- When lit, this indicates that the MCB has power applied. If this LED is off, check
connections, power switch position, fuses and circuit breakers. If the AC light is not lit, the MCB will not operate.
+18V Light- When lit, this indicates the presence of the unregulated 18 volt direct
current supply necessary for the operation of the MCB circuitry. If dim the supply voltage may be marginal and if out, not present or inadequate. If this light is not lit, the MCB will not operate even if the PCB is operating properly. If the AC light is lit and the +11V and +18V light are not, check fuse F1. If the +11V light is lit and the +18V light is not lit, return the board to JMI.
+11V Light- When lit, this indicates the presence of the regulated 11 volt direct
current supply necessary for the operation of the PCB. If dim the supply voltage may be marginal and if out not present or inadequate. If the light is not lit, the console will not operate. If the AC and +18V light are lit and the +11V light is not, check for shorted cabling or a defective upper console. If the AC light is lit and the +11V and +18V lights are not, check fuse F1.
