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.
5-2 Revision: 1.0 Date: 2001-06-01