Matsushita Electric Panasonic RX-SA77 User manual
ORDER
NO.
GAD8606045A2
Service
Manual
Radio
Cassette
Stereo
Radio
Cassette
Player
RX-
S
A//
(Black)
ees
|
This
is
the
Service
Manual
for
the
following
areas.
[Z]...For
all
European
areas
except
United
Kingdom
and
F.R.
Germany
t
SE
..For
United
Kingdom
[G]...For
F.R.
Germany
|
AUTO
REVER
[rm]
Please
use
this
manual
together
with
the
service
manual
for
model
No.
RX-SA77
order
No.
GAD8604027C1.
@This
service
manual
indicates
the
main
differences
between;
Original
RX-SA77
(for
[M]
areas)
and
RX-SA77
[Z]
[Ej
(GI.
@
SPECIFICATIONS
Power
Requirement:
Power
Requirement:
AC;
120
V,
60
Hz
with
optional
Panasonic
AC
adaptor
RD-9443HA
AC;
220
V,
50
Hz
with
optional
AC
adaptor
RD-9443HS
Battery;
3
V
(Two
UN-3,
‘‘AA”
size
Penlight
Batteries)
(For
U.K.,
240
V,
50
Hz
with
optional
AC
adaptor
(Panasonic
UM-3
or
equivalent)
RD-9443HE)
Car
Battery;
with
optional
Panasonic
car
adaptor
RP-993
and
Radio
Frequency
Range:
FM;
87.5~108
MHz
Panasonic
DC
plug
adaptor
RP-007
wa
AM;
520~1,610
kHz
Radio
Frequency
Range:
FM;
88~108
MHz
Intermediate
Frequency:
FM;
10.7
MHz
AM;
525~1610
kHz
AM;
455
kHz[z][G]
Intermediate
Frequency:
FM;
10.7
MHz
470
kHz[E]
AM;
455
kHz
RX-SA77
[Z][E][G]
RX-SA77
[M]
(Original)
Panasonic
Matsushita
Electric
Trading
Co.,
Ltd.
P.O.
Box
288,
Central
Osaka
Japan
RX-SA77
m@
PARTS
COMPARISON
TABLE
NOTES:
1.
The
letter
in
the
circle
after
the
part
name
indicates
the
color
of
the
part.
2.
(E)...For
United
Kingdom
®...Black
(G)...For
F.R.
Germany
Part
Number
Part
Name
and
Description
oes
Remarks
RX-SA77
[N]
RX-SA77
[Z][E][G]
Oscillator
Coil,
FM
RLO4Y19
RLO4N225
[GJ
only
Trimmer
Capacitor
ECRLA010A12
RCVCTZ3210
[G]
only
CF2
(E)
Ceramic
Filter
470
kHz
RVFPFA470A
E]only
Capacitor,
50
V
27
P
RCUV1H270JP
GJonly
Resistors,
4.7
kQ
RRD10XJ223
RRD10XJ472
K12
(G)
Rear
Cabinet
Ass'y
®)
RYFXSA77M
RYFXSA77ZG
[G]
only
K24
(G)
Cassette
Lid
Ass’y
©
RYQXSA77ZG
G]
only
n3
Operating
instructions
[Pt
Gift
Box
RPKA0015Z
RPKA0025ZA
MEASUREMENTS
AND
ADJUSTMENTS
{z]...For
all
European
areas
except
United
Kingdom
and
F.R.
Germany
(E}...For
United
Kingdom
(G]...For
F.R.
Germany
@
AM
ALIGNMENT
AM-IF
ALIGNMENT
Fashion
loop
of
455 kHz
:
several
turns
of
Point
of
non-
Output
meter
F :
(1}}
AM
|
wire
and
radiate
|
300,
sfog
interference.
(on/
|
across
voice
T3
(AM
IFT)
be
eta
for
maximum
signal
into
loop
of
at
400
Hz.
about
600
kHz)
coil.
put.
receiver.
RX-SA77
[M]
(Original)
v
Output
meter
across
voice
coil.
Fashion
loop
of
several
turns
of
wire
and
radiate
signal
into
loop
of
receiver.
455
kHz..
470
Mie
aS
30%
Mod.
at
400
Hz
Point
of
non-
interference.
(on/
about
600
kHz)
T3
(AM
IFT)
Adjust
for
maximum
output.
RX-SA77
[Z][E]
[6]
FM-RF
ALIGNMENT
Variable
Output
meter
@
FM
ALIGNMENT
Trimmer)
f
L2
(FM
OSC
(#2)
Adjust
for
maxi-
(3)
86.2
MHz
|
capacitor
across
’
fully
closed.
voice
coil.
Coil)
mum
output.
Variable
wo]
em
|
Soneepiettt,
|
sovzmic
|
sateen
eas
FM
dummy
fully
open.
antenna.
Negative
F
L1
(FM
ANT
(5)
ace
to
test
point
90
MHz
Tune
to
signal.
Coil)
(*2)
Adjust
for
maxi-
(6)
106
MHz
CT1
(FM
ANT
mum
output.
Repeat
steps
(3)~(6).
[|
_(*2)
Three
output
responses
will
be
present;
proper
tuning
is
the
center
frequency.
RX-SA77
[M]
(Original)
Output
meter
across
_
voice
coil.
Variable
Capacitor
fully
closed.
L2(FMOSC
(3)
87.5
MHz
|
Coil)
(*2)
Adjust
for
maxi-
mum
output.
Variable
(4)
Connect
to
test
point
W
through
FM
dummy
108.0
MHz
|
capacitor
fully
open.
CT2
(FM
OSC
Trimmer)
antenna.
Negative
(5)
side
to
test
point
90MHz
Tune
to
signal.
L1
(FM
ANT
Coil)
(6)
106
MHz
CT1
(FM
ANT
Trimmer)
(*
2)
Adjust
for
maxi-
mum
output.
Repeat
steps
(3)~(6).
(*2)
Three
output
responses
will
be
present;
proper
tuning
is
the
center
frequency.
RX-SA77
[Z][E]
[6]
—~2-
@
ALIGNMENT
POINTS
FMOSC
AMOSC
AMOSC
VCO
TAPE
SPEED
109.2MHz
I65OkHz
Sil
kHz
ISkHz
30IOH2
o
Ss
~_
of
Ist
AMIFT
.7MHz
455kHz
5
T3]
Q9OMHz
\
|5O0kHz
aan
BACK
72mv
AM
ANT
Seat
®
(Back
Sige
ofthe)
550kHz
Loch
\Circuit
Board
Fig.
1
RX-SA77
[M]
(Original)
4
FMOSC
amosc
AMOSC
VCO
‘TAPE
SPEED
108.0
MHz
I650kKHz
511
kHz
I9kH2
-«
SOIOHz
—
AMIFT
455
kHz
470
kHz
E
2
FM
2nd
10.7MHz
(ey
Side
of
re)
Lh
\Circuit
Board
RX-SA77
[Z][E}[G]
RX-SA77
a
T.H
Printed
in
Japan
©
ORDER
NO.
GAD8604027C1
Service
Manual
Radio
Cassette
RX-SA77
(Black)
Stereo
Radio
Cassette
Player
This
is
the
Service
Manual
for
the
following
areas.
[MI...For
U.S.A.
[C].
..For
Canada.
Ww
vg)
oy
iu
if
oe
iS}
a
RX-SA77
Mechanism
Series
@
SPECIFICATIONS
General:
Power
Requirement:
AC;
120
V,
60
Hz
with
optional
Panasonic
AC
adaptor
RD-9443HA
Battery;
3
V
(Two
UM-3,
‘‘AA”
size
Penlight
Batteries)
(Panasonic
UM-3
or
equivalent)
Car
Battery;
with
optional
Panasonic
car
adaptor
RP-993
and
Panasonic
DC
plug
adaptor
RP-007
Power
Output:
40
mW
(20
mW
x2)...RMS
(max.)
Input:
DC
IN;
3
V
(mini
jack)
Output:
Headphones;
320
23.5
Dimensions:
3/4"
(W)
x
45%"
(H)
x
19%”
(D)
[82
(W)
x
117.5
(H)
X35
(D)
mm]
Weight:
9.2
02.
(260
g)
without
batteries
Radio
Section:
Radio
Frequency
Range:
FM;
88~108
MHz
AM;
525~1610
kHz
Intermediate
Frequency:
FM;
10.7
MHz
AM;
455
kHz
Sensitivity:
FM;
2.5
uV/1
mW
output
(—3
dB
Limit
sens)
AM;
56
pV/m/1
mW
output
Tape
Deck
Section:
Frequency
Response:
Normal;
50~12000
Hz
CrOz;
50~12000
Hz
Metal;
50~12000
Hz
Motor:
Electrical
governor
motor
Track
System:
4-track
2-channel
stereo
playback
Tape
Speed:
1%
ips
(4.8
cm/s)
Weights
and
dimensions
shown
are
approximate.
(Les
poids
et
dimensions
mentionnes
sont
approximatifs.)
Design
and
specifications
are
subject
to
change
without
notice.
Panasonic.
Matsushita
Services
Company
50
Meadowland
Parkway,
Secaucus,
New
Jersey
07094
Panasonic
Hawaii
Inc.
91-238
Kauhi
St.
Ewa
Beach
P.O.
Box
774
Honolulu,
Hawaii
96808-0774
Matsushita
Electric
of
Canada
Limited
5770
Ambler
Drive,
Mississauga,
Ontario,
L4W
2T3
Panasonic
Sales
Company,
Division
of
Matsushita
Electric
of
Puerto
Rico,
Inc.
Ave.
65
De
infanteria,
KM
9.7
Victoria
Industrial
Park
Carolina,
Puerto
Rico
00630
LOCATION
OF
CONTROLS
AND
COMPONENTS
@
FM
Stereo
Indicator
(FM
ST)
@
Tape
Selector
(TAPE)
©
Headphones
Jack
(PHONES)
23.5,
32Q
©
Band
Selector
(BAND)
@
“Dolby
Noise
Reduction
Switch
(DOLBY
NR)
@
Tuning
Control
(TUNING)
@
Volume
Control
(VOLUME)
©
Cassette
Compartment
©
Graphic
Equalizer
Controls
(5
BAND
GRAPHIC
EQUALIZER)
@®
Function
Selector
(SELECTOR)
@®
FM
Sensitivity
Selector
(FM
SENSITIVITY)
@
Stop
Button
(=
STOP)
®
Fast
Buttons
(4
-
¥
FAST)
@®
Playback
Button
(2
PLAY)
@®
Tape
Direction
Selector
(DIRECTION)
@®
DC
input
Jack
(DC
IN
3
VO-©-@)
[Bottom]
@®
Clip
Receptacle
®
Battery
Compartment
AUTO
REVERSE
Stet.
*“Dolby”
and
the
double-D
symbol
are
trademarks
of
Dolby
Laboratories
Licensing
Corporation.
Noise
reduction
system
manufactured
under
license
from
Dolby
Laboratories
Licensing
Corporation.
BATTERY
SERVICE
LIFE
UM-3
(AA
size)
Batteries
Approx.
4
hours
of
playback
(EIAJ)
with
volume
set
at
8.5
position
The
above
battery
service
life
is
measured
according
to
the
conditions
set
forth
by
EIAJ
(Electronic
Industries
Association
of
Japan).
As
the
battery
service
life
varies
with
the
method
of
operation
and
environmental
conditions,
use
these
values
as
reference.
DISASSEMBLY
INSTRUCTIONS
@
Removing
the
Rear
Cabinet
1.
Disconnect
the
two
soldered
connections
of
the
lead
wires.
2.
Remove
the
screw
(B)
(1.6x4)
mmx1.
3.
The
selector
knob
will
come
off
at
the
same
time
the
PC
board
is
removed,
so
be
careful.
@
Caution
upon
removing
the
Circuit
Board
1.
Remove
the
screws
(A)
(2x8)
mmx5.
2.
Push
the
inside
of
the
Front
Cabinet
in
the
direction
of
arrow.
@
Removing
the
Main
Circuit
Board
Function
Selector
Knob
FM
Sensitivity
Switch
Lever
Fig.
3
1.
When
removing
the
circuit
board
from
the
main
unit,
the
FM
Sensitivity
switch
lever
may
disengage.
2.
When
resetting
the
FM
Sensitivity
switch
lever,
the
tooled
face
of
the
lever
should
face
the
S2
side.
(Refer
to
Fig.
3.)
RX-SA77
RX-SA77
FM
Sensitivity
Switch
Lever
@
Removing
the
Cassette
Lid
and
the
Graphic
Equalizer
Circuit
Board
Plastic
Boss
(RHR3097Z)
Note
the
direction
of
attachment.
(The
side
with
the
boss
face
down)
al
,
Drum
Gear
Fig.
10
i
©
a6
g
Fig.
13
{==
.
;
.
'
Fig.
4
2.
Turn
the
drum
gear
fully
in
the
direction
of
the
2.
Attach
the
plastic
boss
(RHR3097Z)
located
on
the
back
of
g.
1.
Remove
the
screw
(C)
(1.61.4)
mmx2.
arrow.
Re-fix
the
chassis
of
the
dial
in
the
the
mechanism.
3.
Align
the
Knob
and
the
FM
Sensitivity
2.
Remove
the
screw
(D)
(1.6x2)
mmx1.
manner
shown
in
the
diagram.
(The
boss
is
not
attached
to
the
base
plate,
so
be
careful
switch
lever
with
the
direction
of
the
not
to
lose
it
until
the
front
cabinet
is
assembled.)
arrow
upon
resetting.
Cassette
Lid
@
How
to
Replace
the
Cassette
Lid
Spring
a
Removing
the
Mechanism
Cassette
Lid
Spring
(Front
of
mechanism)
Graphic
Equalizer
Fig.
7
Circuit
Board
Cassette
Lid
Front
Cabinet
3.
Push
the
cassette
lid
in
the
direction
of
arrow
©,
and
:
disconnect
the
inside
boss.
Fig.
11
1.
Fit
part
©
on
the
shaft
of
the
front
cabinet.
2.
insert
part
®
in
the
hole
in
the
cassette
lid.
3.
Fit
the
boss
©
in
the
cassette
lid
(same
on
right
side).
@
Replacement
of
a
Plastic
Boss
\f
a
plastic
boss
for
attachment
of
the
mechanism
should
become
broken,
replace
it
by
following
the
procedure
below.
rronteaningt
Solder
iron
Fig.
14
3.
Position
plastic
bosses
vertically
and
insert
them
in
the
holes
in
the
front
cabinet.
(Make
sure
they
are
firmly
in
4.
Remove
the
spring
(A).
place.)
/
7
Themechanism
can
now
be
removed.
@
Dial
Setting
Point
Marker
Before
attachment
Base
plate
4
7c
=
a
—
.
Fig.
5
aa
i
ee
ce!
Fig.
12
ate
f=
yt
~——
The
mechanims
can
tt
=
4.
Use
a
soldering
iron
to
meit
and
remove
the
damaged
boss.
now
be
removed.
Sei
ar
|
‘Siecle
{oe
HOU
kel
! ;
a
(—)
Screwdriver
After
1.
Remove
the
lugs
of
the
plastic
bosses.
Turn
each
boss
90°
in
the
:
‘
attachment
‘ay
direction
of
arrows
©
and
@,
and
remove
the
mechanism
from
Dial
Poniter
the
cabinet.
Fig.
9
ig.
Fig.
15
1.
Align
the
needle
of
the
meter
with
the
mark.
4.
Use
a
flat-head
screwdriver
to
turn
the
bosses
90°
in
the
. :
eer
direction
of
the
arrows.
(There
are
lugs
in
the
front
cabinet,
(
v0
roeauha
bes
Powter
D
sieigh
piisabirielacas
ennai
=
)
so
the
bosses
will
not
turn
in
the
opposite
direction.)
location
shown
in
the
figure
and
gently
pry
the
Pointer
holder
off.
5.
Make
sure
the
mechanism
Is
secure
in
the
cabinet.
Pa
ae
V
Be
sure
to
fold
at
the
(W)
mark
so
that
mark
is
on
the
outside.
ay oe
')
RX-SA77
RX-SA77
SCHEMATIC
DIAGRAM
1
2
3
4
5
6
7
8 9
10
11
12
ve
(RXRAL
1AC)
les
D1
Q2
1c4
a3
(2SKI60K5)
Vy
eM
yAM
IF
AMP
DET
(AN7415S)
(SLC22UR4F)
(2SA88ISERF)
(AN66I2S
)
(DTCI43T)
AM
RF
AMP
Tl
y
am
OSes
Wek
S
MPX
FM
ST
IND
MOTOR
DRIVE
MOTOR
MOTOR
DRIVE
1cl
3ro
:
Ne
GOVERNOR
t
(RVITA7358F
)
iT
14
a
,
FM
FRONT
END
iTe
R2100
CFI
~o
VRI
5
5
RU
22K
10KB
jles—
1g
it
i
je
{RDC
IN
3V
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C19
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mR
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:
©
—
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028
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ye
prt2_
Arle
het
ROB
18K
Y
CDPD
ars
:
wo
_
|||
Loesl
[oF
[LaF
Le
i
a6
Thy
as
FWD
e-f
as
HK
He
a
S
S|).
oo)
ta
ta
PLAY
HEAD
A
>
07
O—-O-—O--O-O-0--O—O—--
=
On
IC7
|
'°
8
13
J12
Tod
72
Tog
T12
Tos
Jo
REV
~=
S
32
g
R36
12K
RAL
4
ro)
a
3
s
,
AW
|
a
SL
18
=
L—
aoa
es
.
_
a
ag
Sam
i
@
5
S
S
S
IC7
fs
2
Z
=
(TKIO581M)
=
IC
6
Q6,7
=
|
ceAPHle
EQ
HEADPHONES
(RXRABAC
)
(2SD6OIR)
'
CJ
(32
2)
DOLBY
GRAPHIC
EQ
AMP
_|
|
t
Notes:
5.
S65:
FM
Sensitivity
Switch
in
“DX”
position.
13.
The
mark
(¥)
shows
test
point
e.g.
W
=test
point
1.
16.
Described
in
schematic
diagram
are
two
types
of
numbers;
the
1.
$1:
Motor
Switch
in
“OFF”
position.
(D...DX,
L...Local)
14.
DC
voltage
measurement
are
taken
with
electronics
voltmeter
supply
parts
number
and
production
parts
number
for
transistors
2.
$2-1,$2-2:
Function
Selector
Switch
in
“TAPE”
position.
6.
S6-1,
S6-2:
Direction
Switch
in
“FWD”
position.
from
negative
terminal
of
battery.
and
diodes.
One
type
number
is
used
for
supply
parts
number
(R...Radio,
T...
Tape)
(F...FWD,
R...REV)
(
)...AM
Position,
<
>...FM
Position,
and
production
parts
number
which
they
are
identical.
3.
$3-1,$3-2:
Band
Selector
Switch
in
“FM
STEREO”
position.
7.
$7:
Dolby
Switch
in
OFF”
position.
No
mark...Playback
position
e.g.
Q1
(F.S...FM
STEREO,
F...FM
MONO,
8.
VR1:
FM
VCO
Frequency
adjust
VR.
15.
Battery
current:
Nosignal
.............00..00
eee
eee
23
mA
2$C2412NATB,
LNSTB-—--—
Production
parts
number
A...AM)
9.
VR2:
Tape
speed
adjustment
VR.
Maximum
output
(radio)
.............
29mA
(2SC2412]~___—___-—-
Supply
parts
number
4.
$4-1,S4-2:
Tape
Selector
Switch
in
“METAL”
position.
10.
VR3,
4:
Playback
gain
adjustment
VR.
Maximum
output
(tape)
.............
164
mA
17.
The
supply
parts
number
is
described
alone
in
the
replacement
(M...Metal,
N...Normal)
11.
VR5-1,
5-2:
Volume
control
VR.
parts
list.
12.
VR101~107,
yee
VR201~207:
Graphic
equalizer
VR.
op
RX-SA77
RX-SA77
CIRCUIT
BOARD
AND
WIRING
CONNECTION
DIAGRAM
8 9
1
2
3
4
5
6
7
Si
MOTOR
SWITCH
2)
eg
RY
Soy"
SELECTOR
FU
r
in
SENSITIV!
te
—
sy
BATTERY
3V
(UM-
3x2)
i
A
10
11
12
GRAPHIC
EQUALIZER
CIRCUIT
BOARD
<
....Light
Blue
No
Color
Mark
....
Orange
«+.
Pink
+.
Red
Shield
Wire
Violet
tl
si
Notes:
_
Le
wo
.
The
circuit
shown
in
(#2)
on
the
conductor
indicates
printed
circuit
on
the
back
side
of
the
printed
circuit
board.
.
The
circuit
shown
in
(a)
on
the
conductor
indicates
printed
circuit
on
the
front
side
of
the
printed
circuit
board.
.
The
symbois
(@)
shown
in
the
circuit
board
indicate
connection
points
between
conductors
on
the
front
side
and
back
side
of
the
circuit
board.
This
circuit
board
diagram
may
be
modified
at
any
time
with
the
development
of
new
technol-
ogy.
rs
Lin
i
RX-SA77
RX-SA77
MEASUREMENTS
AND
ADJUSTMENTS
@
ALIGNMENT
INSTRUCTION
READ
CAREFULLY
BEFORE
ATTEMPTING
ALIGNMENT
1.
Set
volume
control
to
maximum.
6.
Set
power
source
voltage
to
3
V
DC.
2.
Set
equalizer
control
to
center.
7.
Set
Dolby
NR
Switch
to
OUT.
3.
Set
ultra
phonic
mode
switch
to
OFF.
8.
Set
Tape
Selector
Switch
to
normal.
4.
Set
band
switch
to
AM
or
FM
ST.
9.
Output
of
signal
generator
should
be
no
higher
than
necessary
to
5.
Set
selector
switch
to
radio.
obtain
an
output
reading.
m@
AM
ALIGNMENT
SS
WEE
GENERATOR
RADIO
DIAL
(ELECTRONICS
SWEEP
GENERAT'!
BAND
SETTING
VOLTMETER
ADJUSTMENT
REMARKS
CONNECTIONS
|FREQUENCY
or.SCOPE)
(1)
(2)
(3)
(4)
(5)
Fashion
loop
of
receiver.
455
kHz
it
chanted
of
wire
and
radiate
: :
30%
Mod.
signal
into
loop
of
at
400
Hz
AM-IF
ALIGNMENT
Point
of
non
511kHz
1,650
kHz
fully
closed.
interference.
about
600
kHz)
Output
meter
‘
:
(on!
|
across
voice
T3
(AM
IFT)
el
ea
for
maximum
coil.
put.
AM-RF
ALIGNMEN
Tuning
capacitor
L3
(AM
OSC
Coil)
Adjust
for
maximum
output.
fully
open.
550
kHz
m@
FM
ALIGNMENT
SIGNAL
GENERATOR
or
SWEEP
GENERATOR
(1)
(2)
(3)
(4)
(5)
(6)
CONNECTIONS
1,500
kHz
FREQUENCY
(*1)
Cement
antenna
bobbin
with
wax
after
completing
alignment.
RADIO
DIAL
SETTING
Tuning
capacitor
Tune
to
signal.
CT3
(AM
OSC
Trimmer)
Adjust
for
maximum
output.
Adjust
L5
by
moving
coil
bobbin
along
ferrite
core.
Adjust
for
maximum
output.
Repeat
steps
(2)~(5).
(+1)
L5
(AM
ANT
Coil)
CT4
(AM
ANT
Trimmer)
INDICATOR
(ELECTRONICS
VOLIMETER
ADJUSTMENT
REMARKS
or
SCOPE)
FM-IF
ALIGNMENT
|
High
side
thru.
0.001,F
to
test
FM
va
WY
.
Negative
swe)
side
:
FM
to
test
point
FM
FM
Connect
to
test
point
W
through
Connect
vert.
Point
of
non-
amp.
of
scope
to
Adjust
for
maximum
interference.
(on/
|
test
point
Y
.
T1
(FM
tst
IFT)
|
amplitude.
about
90
MHz)
Negative
side
to
(Refer
to
fig.
2.)
test
point
Y
.
Adjust
for
maximum
amplitude.
'
T2
(FM
2nd
IFT)
(Refer
to
fig.
3.)
FM-RF
ALIGNMENT
Variable
86.2
MHz
|
capacitor
fully
closed.
Variable
109.2MHz
|
capacitor
fully
open.
Output
meter
L2
(FM
OSC
(*2)
Adjust
for
maxi-
across
voice
coil.
Coil)
mum
output.
CT2
(FM
OSC
P
Trimmer)
Sten
it
L1
(FM
ANT
antenna.
Negative
P
i
FM
|
side
to
test
point
Tune
to
signal.
Coil)
:
Pe
(*2)
Adjust
for
maxi-
1
(FM
ANT
mum
output.
FM
106
MHz
Trimmer)
Repeat
steps
(3)~(6).
(*
2)
Three
output
responses
will
be
present;
proper
tuning
is
the
center
frequency.
@
SEPARATION
ALIGNMENT
FM
SIGNAL
EQUIPMENT
ITEM
eras
CONNECTION
|
ADJUSTMENT
|
SPECIFICATION
REMARKS
CONNECTION
COUNTER
98
MHz,
60dB
(CW)
:
Connect
to
test
Adjustment
of
|
point
YW
through
VW...
+)
VR
19kHz
Adjust
VR1,
for
19kHz
(+100Hz)
Pilot
signal.
FM
dummy
antenna.
v..(-)
reading
on
electronics
counter.
Negative
side
to
test
point
ne
@
ALIGNMENT
INSTRUCTION
MEASUREMENT
|
ADJUSTMENT
ITEM
INPUT
POINT
POINT
PROCEDURE
Adjust
the
azimuth
adjustment
screw
during
Azimuth
repeated
forward
and
reverse
playback
to
obtain
(A)
Azimuth
(8
ie
once:
eee
nis
eid
the
maximum
head
azimuth
alignment
with
both
channels
equal.
(Refer
to
Fig.
4)
Then
screw-lock
the
adjustment
in
place.
Playback
the
central
part
of
the
tape
and
adjust
VR2
so
that
the
tape
speed
is
as
follows.
3000+90
Hz
(Forward
&
Reverse)
QZZCWAT
(3kHz,
—
10dB)
VR2
(B)
Tape
speed
(Refer
to
Fig.
1)
QZZCFM
(315
Hz,
0
dB)
VR3
(L-CH)
VR4
(R-CH)
Playback
any
part
of
the
tape
and
adjust
VR3
and
VR4
so
that
the
playback
gain
is
72+8
mV.
(C)
Playback
(+)
L-CH
gain
(~)
(4)
R-CH
FMOSC
AMOSC
AMOSC
VCO
TAPE
SPEED
109.2MHz
I65OkHz
SII
kHz
ISkHz
30I0Hz
[VRI]
VR2
Mist
~
AMIFT
-TMHZ
=
4555kHz
on
Fig.
2
NN
ANT
ISOOkHz
@)|VR4
[cT4]
oo
Ee
BACK
T2mvV
FM
ANT
)
(Back
Side
ofthe)
Leh
\Circuit
Board
Fig.
3
Fig.
1
@
ALIGNMENT
POINTS
-
@
Removing
a
Jammed
Tape
(REV)
(FWD)
Azimuth
screw
Flywheel
Flywheel
Fig.
4
Fig.
5
1.
To
perform
the
azimuth
adjustment,
insert
a
test
tape
with
1.
Remove
the
batteries
and/or
disconnect
the
OC
IN
power
the
cassette
lid
removed
according
to
the
disassembly
supply.
instructions
in
Figs.
1
through
3.
2.
Follow
the
disassembly
instructions
in
Figs.
4
and
5
to
2.
Press
the
PLAY
button,
and
turn
the
azimuth
adjustment
remove
the
rear
cabinet.
screw
while
the
tape
is
traveling.
3.
Depending
on
the
direction
of
tape
travel
(FWD,
REV),
turn
the
corresponding
flywheel
in
the
direction
of
arrow
@
for
FWD
and
in
the
direction
of
arrow
@
for
REV.
—10—
RX-SA77
RX-SA/7
The
letter
in
the
circle
after
the
part
name
indicates
MECHANISM
PARTS
LOCATION
the
color
of
the
part.
©...Silver,
®...Blue
MECHANICAL
PARTS
M1
RNG25Z
Gear,
Reel
Table
M2
RNB7Z
Bush,
Reel
Table
M3
RNL24Z
Plate,
Auto
Stop
Detector
M4
RHS732Z
Feit,
Auto
Stop
Detector
¢
Front
View
NOTES:
e
Rear
View
When
changing
mechanism
parts,
apply
the
specified
grease
to
the
area
marked
show
in
the
drawing
‘“‘Mechanism
Parts
Location”.
o"xx"
mark......
Rocol
paste
(Lubricating
grease)
(RZZOL06)
e“OO”
mark......
Dynamic
grease
(Lubricating
grease)
(RZZOLO5)
o'##”
mark......
Oil
#56
(Lubricating
oil)
(RZZOLO2)
Plate
M5
RNBSZ
Bush,
Auto
Stop
Detector
Plate
M6
RNW290Z
Washer
(Reel
Table
Gear)
M7
RUQ34Z
Spring
(Reel
Table
Gear)
M8
RUAG0038Z
Plate
Ass'y,
Main
Gear
M9
RNLGOO09Z
Lever
Ass'y,
FF
A
M10
RNG22Z
Gear
(A),
Curtai!
of
Speed
M11
RNG23Z
Gear
(B),
Curtail
of
Speed
M12
RNW166Z
Washer
(Gear
(A),
Idler
Gear
etc.
M’tg
Gear)
M13
RFK18Z
Lever
Ass’y,
idler
M14
RNG17Z
Gear,
Idler
M15
RNGG0003Z
Gear
Ass’y,
Main
M16
QXL1723
Pinch
Roller
Ass'y
(REV)
M17
RNL21Z
Lever,
FWD/REV
Relay
M18
RUWS59Z
Spring
(Idler
Lever)
M19
QXL1722
Pinch
Roller
Ass'y
(FWD)
M20
RNLG0O008Z
Lever
Ass'y,
FWO/REV
Select
M21
RANRGOO11Z
Rod,
Ass'y,
FWD/REV
Select
M22
RUA684Z
Head
Base
M23
QMZ1316
Head
Guide
M24
RJHGO009Z
Head
Ass'y
M
24-1
RUP2061Z
FWC,
Head
M25
QBC1496
Spring
(Head
Azimuth)
M26
QHQ1363
Screw
(Head
Azimuth
Adjustment)
M27
XTN2+4
B
Screw
(Head
Ass'y
M'tg)
M28
RFM81Z
Motor
Ass'y
8
M
28-1
RHGA0002Z
Spacer,
Motor
RUL798Z
Motor
Plate
RMC1056Z
Shield
Plate,
Motor
M31
XQN17+A25FZ
Screw
(Motor
Ass‘y
M'tg)
M32
RNRG00012Z
—
Lever
Ass'y,
Stop
©
M33
RNRGOOO13Z
~—_
Lever
Ass'y,
REW©
M34
RNRGOO014Z
—_Lever
Ass'y,
FF
©
M35
RNRGOOO15Z
—_Lever
Ass'y,
Play
©
M36
RUAG0044Z
Sub
Chassis
M37
ANR18Z
FWD/REV
Select
Rod
M38
RNAI7Z
Lock
Rod
M39
RUG83Z
Button,
Base
M40
RUW61Z
Spring
(Power
Cam)
M41
RUD41Z
Spring
(Playback
Rod
Ass'y)
M42
RUW64Z
Spring
(FF/REW
Rod
Ass‘y)
M43
RUW63Z
Spring
(Stop
Rod
Ass’y)
M44
XQN16+CJ35
Screw
(Sub
Chassis
M'tg)
M45
RNG24Z
Gear,
Relay
M
46
XUBQ4
C
Ring,
FWD/REV
Select
Lever
Ass'y,
Intermediate
Gear
M'tg
Hig
M47
RNW123Z
Washer
(Relay
Gear,
Cc
1h
"
Intermediate
Gear
M'tg)
#3,
M48
QBN2061
Spring
(Pinch
Roller
Ass'y
<—.
(FWD))
4
Nw
M49
QBN2062
Spring
(Pinch
Roller
Ass'y
‘
(REV))
iM53
a
es
cea
7
M50
RUW60Z
Spring
(Auto
Stop
Detector
:
Lever)
!
M51
RND1Z
Power
Cam
l
M52
FRING28Z
Gear,
Auto
Stop
|
M53
RNL38Z
Change
Lever
1
M54
RNL25Z
Lever,
Selector
|
M55
RNW122Z
Washer
(Select
Lever
M’tg)
M56
RNG18Z
Gear,
FF
M57
RNL26Z
Lever,
Stop
M58
XUBOQ3VW
C
Ring,
FWD/REV
Relay
2212251617
18
23
Lever,
Stop
Lever
M'tg
12
543
7
1412132
1115129
12
8
1012
M59
XQN16+CF25
Screw
(Motor
Plate,
Main
Gear
Plate
Ass'y
M'tg)
49 26
27
3539
3738
34
444140
32
4647
42
44
50
4331
36 28
30
29
28-1
M60
RUW62z
Spring
(F
WD/REV
Select
Lever)
74
7372
58
64
63616566
53
59
7064
59
755171
525868
5762
6069555471
67
56
77
59 76
Met
RNL37Z
Lever,
Direction
Rod
M62
RUD40Z
Spring
(FF
Lever)
Screw
Dimensions
Quick
Reference
49,5)
mer.”
©
ROMMET
CHR?
Gece
ub
Cnease
SR
¢
Dimensions
Specifications
M65
RUW65Z
Spring
(Direction
Lever)
=
M66
RDRG0002Z
Gear,
Intermediate
XSN
3
+
10=Pan
head
machine
screw,
3mm
in
diameter,
10mm
long.
aa
ee
ADWGOO1AZ
Flywheel
Ase'y
(FEV)
25_59-0om
Pressure
of
$25
M68
RDWG0013Z
—_—-
Flywheel
Ass'y
(FWD)
Type/Diameter/Length
Playback
torque
(FWD
and
REV
|
|
pressure
roller
165-599
“Se
ph
pat
Cuero
*
Types
made}
M71
RNW214z
Washer
(Flywheel
Ass'y
FWD,
RE
70~80g-om
||Wow
and
flutter
|
0.3%
(WRMS)
Ne
comnienr
Naeem
sites
XQC
Flat
head
Binding
head
XTB
Binding
head
(FWD,
REV))
or
XQG
Oval
fillister
head
XSC
Oval
countersunk
head
XTC
Oval
countersunk
head
70~80g
-
cm
M73
pny
tase
ewe
heel
Assy
Mig)
XQH
Fiat
filllster
head
XSH
Flat
fillister
head
XTN
Pan
head
M74
RUAG0038Z
—_—Base
Plate
Ass'y
XQS_
Flat
head
XSN_
Pan
head
XTS
Fiat
head
M75
XQN16+CF4
Screw
(Motor
Switch
M’tg)
Flat
head
M76
RHR3097Z
Plastic
Boss
M77
XUC2FT
E
Ring,
FF
Lever
Ass'y
M'tg
wes 12—
5
RX-SA77
RX-SA77
DISASSEMBLY
OF
MAJOR
MECHANISM
PARTS
@
Head
1.
Remove
the
solider
of
head
and
remove
the
FWC
circuit
board
(Fig.
1).
2.
Remove
the
screw
M27
(2x
4)mm
and
M26
(Fig.
1).
@
Pinch
Roller
1.
FWD
side...
Remove
the
washer
M12
(Fig.
2).
REV
side
...Remove
the
washer
M12
(Fig.
2).
SPRING
LOCATION
anes
ACCESSARY
AND
1.
Re
th
tor
belt
M70
(Fig.
4).
M71,
72
(FWD)
M71,
72
(REV)
2.
Remove
the
two
sorews
M31
(1°7x28)mm
(Fig.
2).
Fig.
1
PACKING
MATERIALS
@
Fiywheel
is
Paks
M12
(REV)
The
letter
in
the
circle
after
the
part
name
indicates
the
color
of
the
part.
®...Black
1.
Remove
the
flywheel
belt
M69
(Fig.
4).
2.
FWD
side...
Remove
the
two
washers
M71,
M72
(Fig.
1).
REV
side
...Remove
the
two
washers
M71,
M72
(Fig.
1).
ACCESSORIES
@
Reel
Table
Gear
At
RPOS45M
Headphone
®
1.
FWD
side...Remove
the
plate
M3,
feit
M4,
bush
M5
(Fig.
3).
“a
spaces
aN
REV
side
...Bush
M2
(Fig.
3).
Operating
Instructions
Operating
Instructions
yy
Uigy
CH
PACKINGS
P1
(M)
RPKAOO15Z
—
Gift
Box
[For
U.S.A.]
P1
)
RPKA0020Z
—
Gift
Box
[For
Canada}
P2
XZB16X25A02
Polyethylene
Cover
P3
QPCA0001
Packing
Sheet
P4
RPNA0009Z
Pad
(Bottom)
P5
RPHA0004Z
Pad
(Upper)
P6
RPEA00032
Spacer,
Play
Button
M2
(REV)
M3,
4,
5
(FWD)
Fig.
3
SS
:
r
@
DISTINGUISHING
BETWEEN
|
|
+
FLYWHEELS
d
COmmmmmO
The
FWD
flywheel
and
REV
flywheel
are
different,
so
be
sure
to
distinguish
between
them
as
shown
Coil
spring
a,
Be
below
[—w25
135x3«d
Twist
spring
(Left
turn)
mat
|[115x3
[M62
P
Mia
[18x0x5
7
vi
d
[mao
[1ix19x4s
|
[M49
|
15x13x45
[M50__|10x18x35
|
P
M60
|18.5x185x5
|
[mes
[13x135x4
|
(REV)
(FWD)
14.5x14.5x4
14.5x
15x45
D
-13-—
Vv
—14—
The
letter
in
the
circle
after
the
part
name
indicates
the
color
of
the
part.
®...Black,
@...White.
Ki
K2
K3
K4
K5
K6
K7
K8
K9
K10
K11
C1,70
C2,18
03,13
C4
C5,
12,
43,
44,
C6,31,42,45
C7
ca
c9
C11
C14
C15,32,34,38
CABINET
PARTS:
RODGS744Z2—-
DrumGear_
XSHR17+2FZ
Screw
(Drum
Gear
M'tg)
RUAA0003Z
Dial
Chassis
RUAA0004Z
Holder,
Dial
Pointer
RDPA0G01Z
Dial
Pointer
@
RBTA0001Z
Knob,
Volume
®)
RBTA0002Z
Knob,
Tuning
©
RDGA0001Z
Gear,
Middle
RKKA0002Z
Cover,
Battery
®
RJCA0001Z
Terminal,
Battery
+
RJCA0002Z
Spring
(Battery
—)
Part
Name
&
Description
|
Ret.No.
|
Part.
No.
|
Part
Name
&
Description
Part
Name
&
Description
K12
RYFXSA77M
=
Rear
Cabinet
Ass'y
®©
K12-1
RMXA0001Z
Shield
Plate
A
K13
RNLA0001Z
Lever,
FM
Sensitivity
Switch
K14
RBDA0003Z
Knob,
Tape
Selector,
Dolby
©
K15
RBDA0004Z
Knob,
Band
Selector
©
K16
RBDA0005Z
Knob,
SELECTOR
®
K17
RBDA0006Z
Knob,
FM
Sensitivity
®
K19
XQNQCI6A4F
Screw
(Circuit
Board
M'tg)
K20
xXWC2B
Washer
(Circuit
Board
M'tg)
K21
XTN2+8JFZ
Screw
(Rear
Cabinet
M'tg)
©
K22
RKMA0004X_~—s
Main
Cabinet
©
K23
RUSA0005Z
Spring
(Cassette
Lid)
K24
RYQXSA77M
Cassette
Lid
Ass’'y
©
RX-SA77
XQN17B4FZ
Screw
(Volume
Knob
M'tg)
ice
RUSA0001Z
Spring,
Cassette
Holding
K27
QHQ1370K
Screw
(Cassette
Holder
M’tg)
K28
XQN14+A12FN
Screw
(EQ
VR
M'tg)
K29
RUPA0007Z
Flexible
Lead
Wire
K30
RKGA0006Z
Cassette
Holder
K31
RBDA0007Z
Knob,
EQ
VR
XQN16+A14FZ
RMXA0002Z
Screw
(Cassette
Lid
M'tg)
Shield
Plate
B
ELECTRICAL
PARTS
LIST
ELECTRICAL
PARTS
LIST
Numbering
System
of
Resistor
Example
ERD
25
F
Type
Wattage
Shape
ERX
2
AN
Type
Wattage
Shape
Numbering
System
of
Capacitor
Example
J
101
ECKD
1H
Tolerance
Value
Type
Voltage
(100)
J
2R2
ECEA
50
Tolerance
Value
Type
Voltage
(2.20)
Resistor
Type
Wattage
Tolerance)
:
Carbon
:
Metal
Film
:
Metal
Film
:
Fuse
Type
Metal
:
Carbon
(Chip
Type)
Part.
No.
CAPACITORS
RCUX1H102ZF
RCUX1H101K
RCUX1H223MD
RCUX1H150KC
22, 35, 39,
54
RCUX1H103MD
RCUX1H102MD
RCUX1H120KC
RCUX1H200KC
RCUX1HO40CC
RCUV1HO70CC
RCUX1H222MD
ECEA0GKS330
ECEA0GKS221
ECUX1E333MD
RCUX1H471KC
INTEGRATED
CIRCUITS
RVITA7358F
IC
(FM
FRONT
END)
RXRA11AC
MIX)
IC
(MPX)
IC
(MOTOR
GOVERNOR)
IC
(PRE
AMP)
IC
(DOLBY)
iC
(GRAPHIC
EQ
AMP)
TRANSISTORS
Transistior
(AM
RF
AMP)
Transistor
(MOTOR
DRIVE)
Transistor
(MOTOR
DRIVE,
SWITCHING)
2SD601R
Transistor
(GRAPHIC
EQ
AMP)
DIODE
&
RECTIFIER
SLC22UR4F
LED
(FM
ST
IND)
COILS
Antenna
Coil,
FM
Oscillator
Coil,
FM
AN7415S
AN6612S
BA3503F
RXRABAC
TK10581M
2SK160K5
2SA881SERF
DTC143T
RLOSY125
RLO4Y19
C20,23,25,71,72
ECUX1E104MD
ECSE1CY105R
RCUX1H153MD
ECEA1HKS010
ECEA1HKS2R2
RCUX1H681KC
RCUV1H331KC
ECSE1CY474L
ECSE0GT4750R
ECUX1E224ZF
ECSEOGT4750L
ECEA0GKS101
ECSE1EY334L
ECSE1CY474R
ECSE1EY334R
ECEA0GKS470
ECEA1HK3R3
IC
(FM/AM
IF
AMP,
DET
AM
OSC,
Capacitor
Type
ECEA:
Electrolytic
ECCD:
Ceramic
ECKD:
Ceramic
ECQM:
Polyester
ECQP:
Polypropylene
ECET:
Electrolytic
ECEAQCON:
Non
Polar
Electrolytic
QCU
QO:
Ceramic
(Chip
Type)
ECUX:
Ceramic
(Chip
Type)
Ref.
No.
C115
C116,216
C117,217
C118,218
C119,219
C120,220
C121,221
C122,222
C123,223
C124,125,
224,225
C215
RCSE1CT105LU
RCUX1H102MD
ECSE1DT684RU
ECUV1E393MD
RCSE1VT224RU
ECUX1H123MD
ECUX1E683MD
RCUX1H392MD
RCUX1H122MD
R6,18,47
R7,17,20
R8
Re
R11,13,14
Ri2
R15
R16
R22
R23
R24,25
R31,32,33,36
R34,35
R37,38
ECUX1H223MD
RCSE1CT105RU
RESISTORS
RRD10XJ220
RRD10XJ101
RRD10XJ151
RAD1I0XJ102
R1,10,19
R2
R3
R4
Part.
No.
RLO2A17
RLQUR63K
RLF2NS
Part
Name
&
Description
Oscillator
Coil,
AM
Oscillator
Coil,
AM
Antenna
Coil,
AM
TRANSFORMERS
IFT,
FM
1st
RLI4A27
IFT,
FM
2nd
RLI2A27
IFT,
AM
VARIABLE
CAPACITORS
RCV4LC3RQ
__—ss
Variable
Capacitor
TRIMMER
CONDENSER
ECRLAO10A12_
Trimmer
Capacitor
ECRLAOO6A12
Trimmer
Capacitor
VARIABLE
RESISTORS
RVNCA14B4
FM
VCO
Control
10
kQ,
(B)
EVND4AA00B32
Tape
Speed
Control
3002,
(B)
EVM14GA00813
Dolby
Control
1
kQ,
(B)
EVUBAATS50A54
Volume
Control
50
kQ,
(A)
VR103,104,
105,106,107,
203,204,205,
206,207
RLI4A31
EVBJSOPA1201
Graphic
EQ
Control
—15—
102
Zz
F
Value
Tolerance
Pecuiiarity
(1000
pF)
M
R47
Peculiarity
Value
(0.47
uF)
1:
IDKC
:
400
VAC
K
:
RRD10XJ681
RRD10XJ470
RRD10XJ103
RRO10XJ822
RRD10XJ680
RAD10XJ223
RRD10XJ562
RRD10XJ222
RRD10XJ331
RRD18XJ820
RRD10XJ100
RRD10XJ183
RRD10XJ123
RRD10XJ224
RARD10XJ332
RRO10XJ472
ERSB39JR40
RAD10XJ751
ERSB15J103
ERs6GCJ101
ERS6GCJ683
ER®GCJ183
enpaclt
22
R112,212
ERBGCJ222
CHIP.
cine
RJ1,2,3,4,5,6,7
RRVTOXJOOO
RJ8,9,10,11,12,
13,14
RJ101,102
RAD18XJ000
ARD18XKO00
Part
Name
&
Description
CERAMIC
FILTERS
RVF107WAR
RVFPFA4S5SA
Ceramic
Filter
10.7
MHz
Ceramic
Filter
455
kHz
FILTER
RXABPMB6A
Component
Combination
SWITCHES
Switch,
Motor
Switch,
Function
Selector
Switch,
Band
Switch,
Tape
Selector,
Dolby
Switch,
Ultra
Phonic
Switch,
Reverse
JACKS
Headphones
DC
IN
RSH1A59Z
QSS2233
RSS3B32Z
RSS2B40Z
RSS2856Y
QSS82238
RJJD3S5Z
RJJB2Z
-
Mi
H.M
(T.K)
Printed
in
Japan
Oo
©
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