Technogym Run Excite 500 Service Maintenance Manual page 43

RUN EXCITE: Service & Maintenance Manual - rev. 1.5
TGS/Smart Card board;
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LVDS board;
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Keyboard;
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Headphone Jack;
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Splitter / amplifier;
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Power supply inverter for LCD.
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The main functions of the board are:
Distributes to the display the voltages received from the Power Supply Board;
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Controls the User Fan;
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Houses the backup battery which maintains the RAM memory on the 386 board;
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Exchanges, over the RS-485 serial link to the inverter, and via the Download Board,
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commands for controlling the belt and elevation motors;
Tuning of audio and video channels;
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Manages the display of images on the LCD.
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The board includes the following 2 jumpers:
Jumper Name
JP1
CN2
and a 3-pin connector (CN18) that can be used for testing the power supplies output by the
board: 0 Vdc (ground), 5Vdc and 3.3 Vdc.
•
S /
PLITTER AMPLIFIER
This device amplifies the signal received from the antenna, separating the audio channel from
the video channel, which it sends to the tuner.
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LVDS
BOARD
It is an RGB buffer board with six bits per color, that interfaces the video signals sent from the
CPU board to the LCD.
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LCD
INVERTER
This device powers the LCD display segments. It receives DC power supplies (12 Vdc and 3.3
Vdc) from the CPU board, and generates the AC voltage (300 Vac) needed to supply the LCD.
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AUX
INPUT CONNECTORS
This board provides 3 RC connectors and one mini DIN connector for interfacing external
audio visual devices to the machine. An input on this board allows the external source to be
displayed on the LCD base band.
Setting Description
open if short-circuited, enables a reset of the microprocessor.
open if short-circuited, enables writing to the flash EPROM.
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