Mcb Led Indication - Vision Fitness Vision Series Service Manual

Note:
Use a multi-meter
to test the power
socket.
110v mode:
95v ～ ～ ～ ～ 140v
220v mode:
210v ～ ～ ～ ～ 250v
Note:
For MCB
(Lower-board)
Note: For PCB
(Upper-board)

MCB LED Indication

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.
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