Technics RS-CH7 - Page 2

RS-CH7 |
m CONTENTS
Page
LOCATION OF CONTROLS ......... 0c cece cece eens 2,3
DISASSEMBLY INSTRUCTIONS ...............000 0008 4~7
DESCRIPTIONOFFLPANEL ............c..ccc cece eee eee 8
MEASUREMENTS AND ADJUSTMENTS .............. 9~11
BLOCK DIAGRAM ...... cc ccc cece ccc eter e tee eneee 12,13
SCHEMATIC DIAGRAM ..........0:cc cece cece eens 14~19
Note:
Page
PRINTED CIRCUIT BOARDS AND
WIRING CONNECTION DIAGRAM ................ 20~22
FUNCTION OF IC TERMINALS .............0.00 0000 ee 23, 24
REPLACEMENT PARTS LIST ...............0.00008 25~37
MECHANISM PARTS LOCATION (DECK 1) ............ 29, 30
(DECK 2): eos se ae ives 33, 34
CABINET PARTS LOCATION.............0000ce see eees 35, 36
Refer to the service manual for Model No. SU-CH7, Order No. AD9104082C1 for information on
ACCESSORIES, INSTALLATION OF THE SYSTEM, CONNECTIONS and PACKAGING.
m@ LOCATION OF CONTROLS
EQUALIZER
STANDBY
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Amplifier: control section
@ Sound effect level control (SOUND JOG)
This control is used for adjusting the level of the ambience
enhancement effect and the equalization level.
@ Ambience enhancement button (SPACE)
This button is used to activate ambience enhancement mode.
@) Spectrum mode-select/demonstration button
(-SPECTRUM MODE—DEMO)
This button is used to select one of the six spectrum curves. If
you press and hold this button, six types of sound effects
(spectrum curve in combination with ambience enhancement)
will be sequentially changed (Demonstration mode).
Super bass indicator
Iluminates when the super bass mode is activated.
Super bass button (SUPER BASS)
When this button is pressed, the dynamic low frequency
ranges are boosted.
Volume preset button (VOL. PRESET)
This button is used to make a volume presetting.
2 © © ®&
Volume level contro! (VOLUME)
This
control
is
used
to
adjust
the
volume
level
(-82
dB~
0
dB).
Note
that
~82
dB
is
the
lowest
volume
setting
and
0
dB
is
the
highest
level
setting.
Equalization function button (ON/FLAT)
This button is used to switch the equalization correction
function. If no equalization correction is desired, press this
button again to cancel the function.
Headphones jack (PHONES)
Microphone jack (MIC)
@@ ©
Equalization mode-select/recall button
(-MODE—RECALL)
This button is used to retrieve a pre-programmed equalization
curve from the memory. If you press and hold this button, a
curve you programmed can be retrieved.
@® Input selectors and indicators
These selectors are used to select the sound source to be
heard. When the sound source is selected, the indicator
above the selector will illuminate.
(3) Standby indicator (STANDBY)
This
indicator
illuminates
when
the
power
“STANDBY.()/ON”
switch
of
the
unit
or
that
of
the
remote
control
is
switched
“OFF”.
Its
purpose
is
to
alert
the
user
of
the
constant
supply
voltage
to
the
internal
circuitry
even
with
the
power
switch
OFF.
For
this
unit,
even
if
this
switch
is
switched
to
the
“STANDBY”
position,
there
is still
a
slight
power
consumption
of about
17
watts:
this
is
in
order
to
retain
of
the
“most
recent”
memory
and
the
preset-memory
functions.