Epson RS-353, Service Manual

Page: 43 / 130

2.6 OPERATION PANEL
This panel includes the board on which eight switches and six are installed, and
is connected to the connector CN 504 on the main board.
Figure 15
2.7 RECEPTOR BOARD
There is one detector for detecting the infrared signal mounted on the receptor board.
The receptor board attached to the power supply unit is placed at the front face of the
main unit. Controlling of any signals received by the receptor board is transferred to the
CPU as interrupt signal.
Figure 16
2.8 SPEAKER UNIT
The speaker is equipped inside the upper case. The audio signals from the amplitude
circuit on the video board are output to the speaker.
Also, audio signal is available
from externally connected speakers. In this case, the balance between the internal
speakers and the external speakers is adjustable by the fader function.
Figure 17
2-13