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13.
R-S77
Schematic
Diagram
FUSE-| AN
AC
IIOV,!120V T5A
AC
220V,240V
T2.5A
FTUNER "&
Hoe 2
PLL LOGIC
SECTION
TFM-924
PIO4
—
<=
2
C
2
eid
oa
tz
5] =
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a
3/5121 383]
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O-O0-2-O
3)
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77)
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use |
ISFORMER
POWER TRAN:
fp----
220u/10V
Sw408e
Sw409c
Sw404c
'C803
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2
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FREQUENCY
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REC-2
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250H;
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VR5029]
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VR502b
VR503b
VRS5O04b_
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TXX-267
TXxX-268
Swool
MAIN
POWER
Sw405
LOUDNESS
sws0l
POWER
X70I
~ 704
2SCI7
-| SuperA AMP C.B. Assy
-1
Switch EQ. AMP C.B. Assy
SW406
AUX
D80! ~804
30D2FA-S
X705, 706
2sci7
-2
Fuse,Power Supply C.B. Assy
-2
Pin Jack C.B. Assy
Ssw4ol
SEA REC
Sw407
PHONO
sws02
SPK-I
D805, 806
RD3O0EB3
X707 ~710
2SA9¢
-3 SPK. Stand by Switch CB Assy
-3
SEA
AMP C.B. Assy
sw402
TAPE-!
sw408
FM
Ssw903
SPK-2
D807, 808
ROISEBS
x7,
712
2SAI0;
-4 Power Indicator Driver C. B.Ass'y
-4
Volume
Balance
C.B. Assy
Sw403
TAPE -2
sw409
AM
OBI!
ROIZEB3
X713, 714
2SC2%
-5 Power Indicator LED
C.B.Assy
-5
LED Indicator C.8. Assy
SW404
MONO,FM
MUTE
OFF
SW4I0
HIGH FILTER
J90I
HEAD
PHONES
D8I2 ~ B15
ERBI2-O2RKLI
X715, 716
2s8c2§
-6 SPK. Terminal
C.B. Assy
TAP-283
D8I6
RDG, 2EB3
x7I7, 718
2SCI7
-7 Head Phones
C.B. Assy
SEA Unit C.B.Assy
D851 ~ 866
SLB-266G
x719,720
2SA87
-8 AC
Outlet
C,B. Assy
TFM-924
D867~
870
IS 2076 -31
x721,722
2SD6E
TXX- 269
TUNER
C.B. Assy
X723, 724
2SB64
LOGIC
C,B.Ass'y
9901, 902
IS2076-31
X725,726
2SD8¢
Printed Circuit Board Ass'y Locations
P.C. Board Ass'y
Description
Notes:
TXX-267
Main Amp., Power Supply and Other Functions
_ =
ea
signal sl
.
;
Indicates
positive
ower
su
:
Split P.C. Board Ass'y
Bid
P
es Ae
pani i
:
:
:
:
indicates negative
ower su
TXX-268
Equalizer, S.E.A. and Other Functions Split
:
mS
:
ee
PC. Board Ass'
4, Parts in red indicate transistors or ICs.
iC.
r
,
er
0a
SOLY.
5. Voltage values in
are positive.
HI
,
[| _TXX-269
_| Logic and Counter P.C. Board Ass'y
G. Valeage values ieee
are negative.
id
.
.
.
.
.
TAP-283
S.E.A. Control P.C. Board Ass'y
7. This is the standard circuit diagram.
TFM-924
FM/AM Tuner P.C. Board Ass'y
ce 1? eee
The
design
and contents
are subject to change without
notice.
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