Technogym RECLINE EXCITE, Руководство по техническому обслуживанию

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RECLINE EXCITE: Service & Maintenance Manual - rev. 1.3
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TTL 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.
The main functions of the board are:
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Distributes to the display the voltages received from the Brake Board;
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Exchanges, over the RS-485 serial link to the Brake board, commands for controlling
the Brake.
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Tuning of audio and video channels;
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Manages the display of images on the LCD.
The board includes the following 2 jumpers:
Jumper Name Setting Description
JP1 open if short-circuited, enables a reset of the microprocessor.
CN2 open if short-circuited, enables writing to the flash EPROM.
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.
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S
PLITTER
/
AMPLIFIER
This device amplifies the signal received from the antenna, separating the FM radio channel
from the TV channel, which it sends to the tuner.
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TTL
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 (380 Vac) needed to supply the LCD.
•
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.
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H
EADPHONE
J
ACK
Two jacks are provided on the machine for connecting headphones. The two jacks are
connected in parallel to a stereo output of the CPU board. In addition to the audio signals, the
connector also includes a sense signal for routing the output to either the headphones or
external speakers, if the latter are installed. The sense contact is NC and opens when the
headphone jack is plugged in.
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