Technics SH-EH50 - Page 10

SH-EH50 |
m@ To Supply Power Source
This
unit
SH-EH50
is
designed
to
operate
on
power
supplied
from
the
Tuner/Amplifier
SA-EH50.
When
operating
the
unit
SH-EH50
alone
for
testing
and
servicing,
without
having
power
supplied
from
the
Tuner/Amplifier
SA-EH50,
use
the following
method.
Power Supply to Video Selector Circuit
1. Short the section between J124 and R753:
2. Short the section J306, J307, J305 and J302 with each other. (Point EY)
3.
Short
the
section
between
J126
and
17
pin
of
the
connector
JK101.
(Point
[)
4. Short the section between J125 and J101. (Point [@)
5.
Apply
+5
V
DC
power
to
the
section
between
J125
and
(+)
foil
side
of
C104.
6. Connect the DC power supply as shown below.
© +12 V terminal of the DC Power Supply connect to Point fq.
© GND terminal of the DC Power Supply connect to Point EN.
®@—12 V terminal of the DC Power Supply connect to Point EJ.
To Check Signal
1. Input the audio signal and confirm in to be outputted from
the terminal.
az INPUT OUTPUT
VCR-Lch terminal
. _VCR-Rch terminal
DC Power Supply
Short Point E} Short EN
Short Point EY
Short Point
Short EJ
JK101-17 pin
DC Power Supply
——J302 “>
J307 seine |
= J305 C104+
J125
Short
ka
D101
J125
J124 +5V
a |
Short
=40=