Technics SU-610Amplifier - Page 2

= CONTENTS |
BEFORE
REPAIR
oo
ee
Sie
Aa
ete
a
ae
-SCHEMATIC
DIAGRAM
|
.......
0000
cece
ee
ee
ee
10~12-
PROTECTION
CIRCUITRY
ee
ere
re
PRINTED
CIRCUIT
BOARDS
.....
Giepoais
wae
LOSI...
ACCESSORIES
.......
saws
Ce
ee
eee
poe
2
TERMINALGUIDEOFIC’'S,
LOCATION
OF
CONTROLS
ae
rb
eeapans’
pete
aecaaiade
3
TRANSISTORS
AND
DIODES
.............0.s0085
16
CONNECTIONS
cance
csecedoeseuenstareehesuaean’
4,5
WIRING
CONNECTION
DIAGRAM........
Sata
beans
ex.
17
DISASSEMBLY
INSTRUCTIONS
Sinica
nei
enti
aaa
6~8
REPLACEMENT
PARTSLIST
................
18,
21,22
BLOCK
DIAGRAM
teens
Eis
abetted
awteletdny
sees
9
EXPLODED
VIEW
.......-
eee
eee
eee
eee.
ate
ea
19,20
a BEFORE REPAIR
-
(1)
Turn
off
the
power
supply.
Using
a
10Q,
5
W
resistor
connect
both
ends
of
power
supply
capacitors
$
(C708,
C706,
4700
ray
in
|
order
to
discharge
the
voltage:
—
(2)
Before
turning
the
power
supply
on,
after
completion
of
repair,
slowly
apply
the
primary
voltage
by:
using
a
power
dipply.
:
|
voltage
controller
to
make
sure
that
the
consumed
current
at
50
Hz/60
Hz
in
NO
SIGNAL
mode
should
be
shown
below
with
respect
to
ee
Mee
110
V/127
V/220
V/240
V.
al
ae
AC
120
V
‘AC.220V
Ac240v
|
100~330mA | 90~310mA | 50~165mA | 45~150mA
| go~182mA | 72~166mA | 40~132mA | 36~120mA
m@ PROTECTION CIRCUITRY
:
The
protection
circuitry
may
have
operated
if
either
of
the
following
conditions
is
noticed:
| ‘No sound is heard when the power is switched ON. :
z
‘Sound
stops:
during
a
performance.
.
The
function
of
this
circuitry
is
to
prevent
circuitry
damage
if,
for
example,
the
positive
an
negative
csaaksrconmeciion
wires
are
“shorted”, or if speaker systems with an impedance less than the indicated rated npeenee oF this unit are used.
If
this
occurs,
follow
the
procedure
outlined
below:
1. Switch OFF the power.
2. Determine the cause of the ‘problem and correct it.
3. Switch ON the power once again. |
Note: |
When the protection al functions, the. unit will not poperns unless ine power is first switched OFF and then ON again.
ea supply voltage
Consumed current50 Hz
Consumed current 60 Hz |
mm ACCESSORIES
@AC
power
supply
cord
..............05.
ee
Chess
A
©
Attachment
AC
plug
......
erreree
Sid
cea
cane
een
1
RJAO004
......
....For
(GC)
area
oly.
ae
as
SIP9215
«oe
ee
eee
For
(GC)
area
only.
“SIAIT(S)s.ccnabves ..For(GN)areaonly; = % |
SJA193 ...... ......For (EB) areaonly. ~
SFDACOSEOS ......For others.