Technogym Bike Forma, Service Maintenance Manual

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BIKE FORMA: Service & Maintenance Manual - rev. 1.0
Page 3.2
3.1.1. D
ISPLAY BOARD
The display contains:
•
386
BOARD
This is the circuit board which comprises the CPU, a 386 microprocessor, its logic circuits and
a FLASH EPROM containing the operating program for the machine.
•
CPU B
OARD
This is the heart of the display: this board acts as the interconnection hub for all the components
of the display, and serves as the point of connection with the electrical box. In particular, its
functions are:
>
receives commands of the machine program from the 386 Board;
>
sends to the 386 Board the signals received from:
- Keyboard;
- Cardio
receiver;
- TGS/Smart Card Board;
- CSafe
Board.
>
distributes to the display the voltages received from the Power Supply Board;
>
houses the backup battery which maintains the RAM memory on the 386 board;
>
exchanges, over the RS-485 serial link to the inverter, and via the Download Board,
commands for controlling the belt and elevation motors;
>
illuminates the LEDs and 7-segment displays used for the exercise feedback.
The board includes the following indicator LEDs:
LED name Color Description
DL1 green
if ON the +5 Vdc supply for the digital
circuits, stabilized by the CPU board,
correctly generates.
DL2 green
if ON the +12 Vdc supply for the power
circuits, provided by the Power Supply
Board, correctly reaches the board.
DL3 orange
if ON the +5 Vdc supply for the power
circuits, provided by the Power Supply
Board, correctly reaches the board.
and 2 jumpers:
Jumper Name Setting Description
JP1 close
if short-circuited, keeps the memory powered
when the machine is off
JP2 open if short-circuited, resets the circuit board