RUN MED: Service & Maintenance Manual - rev. 1.0
Page 3.2
3.1.1. DISPLAY BOARD
This is the heart of the display: this is the circuit board which comprises the CPU, an ARM
microprocessor, its logic circuits and a FLASH EPROM containing the operating program for the
machine moreover, acts as the interconnection hub for all the components of the display and serves
as the point of connection with the electrical box. In fact it receives and process signals from:
- Keyboard;
- Cardio receiver;
- TGS board;
- CSafe Board;
>
distributes the voltages received from the Brake board to the display;
> exchanges, via the RS-485 serial link to the Brake board, the commands for controlling the
brake;
> controls the LEDs and the 7-segment displays which provide feedback about the exercise
session.
The board includes the following indicator LEDs:
LED name Color Description
LED1 yellow
if ON the +5 Vdc power supply from the
Brake board correctly reaches the board.
LED2 green
if ON the +12 Vdc power supply from the
Brake board correctly reaches the board.
and 1 jumpers:
Jumper Name Setting Description
JP1 open HW setting, do not change.
3.1.2. CSAFE BOARD
This board makes available a communication port, on 2 externally accessible connectors, which can
be used for connecting compatible CSafe devices such as the CardioTheater readers. This connector
is situated on the back of the display. Another free connector is available on the board.
These connectors can also be interfaced, using a special cable, to an external PC for programming
the FLASH EEPROM.
3.1.3. TGS READER
This board enables the machine to read the TGS key inserted by the user for performing workouts
programmed with the Wellness System.
3.1.4. HAND SENSOR BOARD
This is the board which manages the hand sensors, interfacing them with the display board. It
processes the analogue signal received from the sensors and outputs one positive logic pulse for
each heart beat that is detected. The signal level is normally 5 Vdc; it goes to 0 Vdc when the user’s
hands are placed on the contacts, and a 5 Vdc pulse (having a width of approximately 30 msec) is
output at each detected heart beat.