Sansui 771 User manual

771
This service manual is designed for service engineers to repair,
adjust, maintain and order the replacement parts of the 771 correctly.
When ordering the parts, use the stock number and parts name speci-
fically referring to the Parts Locations & Parts List.
For
general
usage
and
maintenance
of
the
unit,
please
refer
to
the
Operating
Instructions
attached
with
the
unit.
TABLE OF CONTENTS
Section
Title
Page
1,
:
SPECIFICATIONS
«605053.
5cen
se
ean
eee
sine
cageweeet
een
Peet
2
2.
BLOCK
DIAGRAM
AND
LEVEL
DIAGRAM
..............--------
3
94.-
“Block:
Diagram:
.csnwresduee
outages
vasasen
er
er
eeeeae
Oy
2-3;
.
‘Vevel
Didgtam:-
246
cfas0es
Motes
Meade
dee
esas
eG
esas
wel
ne
4
3.
THREADING
OF
DIAL
CORD
..................-2
2.
cece
eee eee
ees
5
4.
ALIGNMENTS
AND
ADJUSTMENTS
.............----.-0
0s
sees:
6
4-1,
Driver
Circuit
Board
Adjustment
...........--..2
ee
eee
ee
eens
6
4-2.
FMIF
Alignment..........
0...
eee
eee
ee
ete
eee
eee
ene
es
7
4-3,
FM
Dial
Calibration
and
RF
Alignment
...........--+++++--
7,8
4-4,
FM
Signal
Meter,
Mono
Distortion
and
Muting
Adjustment
....
8
4-5.
MPX
Alignment
.........ccce
cece
erence
eee
e
rene
een
eter
enee
9
4-6.
AM
IF,
Dial
Calibration,
RF
and
Signal
Meter
Alignment....
9,
10
5.
TROUBLESHOOTING
CHART
..............-.
6.
eee
e
eee
eee
ees
11
5-1.
Troubleshooting
on
Power
Supply
Section
..........-..+++-.
11
5-2.
Troubleshooting
on
Audio
Section
..........
6...
eee
e
eee
eeee
11
5-3.
Troubleshooting
on
Tuner
Section
..........--++
+++
eee
ee
11,12
6.
PARTS
LOCATIONS
AND
PARTS
LIST
............--.----+5--
13
6-1.
F-1479D
Tuner
Circuit
Board............
00
eee
eee eee
13,14,
15
6-2.‘
F-1504
Mic
&
Tone
Control
Circuit
Board............-...555.
15
6-3.
F-1503
Equalizer
Circuit
Board.........-.
2.
seers
eee
ee
eee
ee
16
6-4.
F-1505
Filter
Circuit
Board.
.......
0...
ccc
ccc
c
ener
eer
e
ee
eeee
17
6-5.
F-1490
De-emphasis
Circuit
Board
........--..
ss
eee
e
eee
17
6-6.
F-1499A
Driver
Circuit
Board
...........
0c
eee
eee
ee
eee
17,18
6-7.
F-1500C
Power
Circuit
Board
...........0
eee
eee
eee
eee
19,
20
6-8.
Other
Parts
(Front
Side)....
6.0.6...
cece
eee
eee
eee
eee
21,22
6-9.
Other
Parts
(Top
Side)
..........
sce
e
ere
e
cence
eee
eee
n
eee
23
6-10.
Other
Parts
(Bottom
Side)........
ec
cece
cece
eee
ete
eee
eee
ee
23
7.
SCHEMATIC
DIAGRAM
OF
TUNER
SECTION
..............-...
24
8.
SCHEMATIC
DIAGRAM
OF
AUDIO
SECTION
..............-..-
25
Q:
PACKING
LIST
cciscicc5
6k
he
dcs
ari
iceeie
dienes
ea
eae
26
10.
ACCESSORY
PARTS
LIST
...............
20:
cece
eee
teen
ees
26
11.
MAINTENANCE
..............0-..
000
eee
e
ee
eee
een
eens
26
11-1.
Voltage
Adjustment......
6.60.6...
c
eee
eee
eee
eens
26

1. SPECIFICATIONS
AUDIO SECTION
POWER OUTPUT (at rated distortion)
MUSIC POWER (IHF)....-- 140W (420 1,000Hz)
110W (8Q, 1,000Hz)
CONTINUOUS POWER
(Each Channel Driven). .55/55W (4 1,000Hz)
45/45W (8Q 1,000Hz)
(Both Channels Driven). .40-+-40W (8Q 1,000Hz)
32+ 32W
(8Q, 20 to 20,000Hz)
TOTAL HARMONIC DISTORTION
(at rated power output)
OVERALL (from AUX) ....less than 0.5%
INTERMODULATION DISTORTION
(at rated power output, 70Hz : 7,000Hz=4 : 1
SMPTE method)
OVERALL (from AUX) ....less than 0.5%
POWER BANDWIDTH (IHF) 15 to 40,000Hz
FREQUENCY RESPONSE (at 1 Watt power output)
OVERALL (from AUX) ....15 to 30,000Hz *7°5dB
EQUALIZATION (at TAPE REC output)
Piette aimee aes RIAA Curve
| (30 to 15,000Hz +1.0dB)
LOAD IMPEDANCE .......- 4to 160
DAMPING FACTOR ........ 60 (8Q)
CHANNEL SEPARATION (1,000Hz, at rated power output)
PHONO --4506.20/26e ¥esGe ds better than 45dB
AUN); 2 bas adacev ae better than 45dB
HUM AND NOISE (IHF)
PHONO sdexuicsGexaauns better than 70dB
ALC, Unis cracied es fies better than 80dB
INPUT SENSITIVITY AND IMPEDANCE
(1,000Hz, for rated power output)
PHONO: sa:cudeeeeneiks 2.5mV 50kQ,
(Max. input capability: 200mV at rated distortion)
MIC (monophonic) ...... 2.5mV 50kQ
POTD. coqtiatniaiiced auess 100mV 50kQ
TAPE-1
PLAY Pin Jacks ........ 100mV 50k,
REC/PLAY DIN Socket ..100mV 50kQ
TAPE-2 (4-CH ADAPTOR)
PLAY Pin Jacks ........ 100mV 50k
RECORDING OUTPUT
TAPE-1
REC Pitt: JaCKS: #.ccs50c0u 100mV
REC/PLAY DIN Socket ..30mV
TAPE-2 (4-CH ADAPTOR)
REC Pin Jacks .......... 100mV
SWITCHES AND CONTROLS
BASS sid tad ete thew Rae es +12dB at 50Hz
TREBLE ssatusns-en tere sees +12dB at 10,000Hz
LOUDNESS: sues 55464406 +10dB at 50Hz
+8dB at 10,000Hz
LOW FILTER ......-...... —10dB at 50Hz (6dB/oct.)
PLIGHAFILTER: onder ohwskas —10dB at 10,000Hz
(6dB/oct.)
TUNER SECTION
<FM>
TUNING RANGE .......... 88 to 108MHz
SENSITIVITY (IHF) .....-.-5. 2.0uV
TOTAL HARMONIC DISTORTION
MONO ak eee beens es 0.4%
STEREO wore edie ounet 0.6%
SIGNAL TO NOISE RATIO ..better than 60dB
SELECTIVITY: sonseSs: c3500% better than 60dB
CAPTURE RATIO .......... 2.0dB
IMAGE REJECTION ........ better than 75dB at 93MHz
IF REJECTION ..........45- better than 90dB at 98MHz
SUPURIOUS RESPONSE REJECTION
pals eee Lena aa better than 80dB at 983MHz
SPURIOUS RADIATION ....less than 34dB
STEREO
SEPARATION
......
better
than
35dB
at
400Hz
FREQUENCY RESPONSE ....30 to 12,000Hz *3:9d8
ANTENNA INPUT IMPEDANCE
Bape a auihyueds 3002 balanced, 75 unbalanced
<AM>
TUNING RANGE .......-.- 535 to 1,605kHz
SENSITIVITY
(Bar
Antenna)
..50dB/m
at
1,000kHz
SELECTIVITY
s2c4%
err
better
than
28dB
at
1,000kHz
IMAGE FREQUENCY REJECTION
uber Sule ape isatee better than 80dB/m at 1,000kHz
IF
REJECTION
.........-
better
than
80dB/m
at
1,000kHz
OTHERS
SEMICONDUCTORS
TRANSISTORS
.........---
49
DIODES.
susie
deca
biiae
sees
25
FETS:
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a
earn
ee
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cae
bata
Gem
panes
3
ZENER:
DIODES:
244.0
6%2No
es
4
POWER
REQUIREMENTS
VOLTAGE.
4auscoehaaades
100,
117,
220,
240V,
50/60Hz
CONSUMPTION
......-.-
100W
(rated),
310VA
(max.)
DIMENSIONS
..........065-
480mm
(18-74”)
W
135mm (5-34”) H
300mm (11-%6”) D
WEG
onctcine
vee
se
ties
12.0kg
(26.4
Ibs.)
net,
14.6kg (32.7 Ibs.) packed
*
Design
and
specifications
subject
to
change
without
notice
for
improvements.

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2. BLOCK DIAGRAM AND LEVEL DIAGRAM
2-1. Block Diagram
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POWER CIRCUIT
POWER
SIT.
$10: SP SELECTOR
$07; AUDIO MUTING S09: SELECTOR
S05: HIGH FILTER
$03: MONO
TAPE MONITOR-1
S01:
OFF
1.
OFF
ie
PHONO
2. FM
1.
OFF
1.
OFF
l.
STEREO
2. MONO
$04; LOUDNESS
1.
OFF
1.
ON
$12: DE-EMPHASIS
ON
$08: FM MUTING
ON
$06: LOW FILTER
ON
$02: TAPE MONITOR-2
AM
4. AUX-]
§. AUX-2
50uS
2. 75pS
1.
OFF
1.
ON
2. OFF
OFF
1.
OFF
2. ON
1
5. A+B 6. A+C
ON
ON
2-2. Level Diagram
* Each number (@, @, @...-) indicated in Level Dia-
gram
undermentioned
corresponds
to
the
number
in
Block Diagram.
1. MASTER VOLUME control ...........--: Maximum
2. BASS, TREBLE, BALANCE volume control ....Center
Se INPUE Sos cot encase PHONO 2.5mV 1kHz Sine Wave
AUX-1 100mV 1kHz Sine Wave
(output impedance of 600Q, at an
audio oscillator)
A QUtpUt. acca cadven 19V (45W) 80
Note: Each voltage value is for reference and measured
by a VIVM. In some recorders, the actual volt-
age value is in minor difference from the refer-
ence value.

3. THREADING OF DIAL CORD
* Length of dial cord...... approx. 150cm (59 inch)
If dial cord is cut or slips, replace cord by following
procedures. As 771 is used 0.6mm¢ cord, please replace
it with same type certainly.
3 turns
(Counterclockwise)
1. Threading of Dial Cord
Thread dial cord in numerical order from 1 to 16 as
shown in Fig. 3-1.
1)
Close the variable capacitor completely (Max. ca-
pacitance) and tie cord to number screw of the
dial pulley.
2) Thread cord in the direction of arrow from 1 to 3,
3)
4)
5)
then wind cord three turns around the tuning shaft
counterclockwise.
Thread cord in the direction of arrow from 4 to 12,
then wind it two turns on the dial pulley from 13
to 16.
After 16, tie cord to number @ screw of the dial
pulley.
* When you perform procedure 4) successfully,
please refer to the followings.
@To strengthen the dial cord tension, hold around
the end of cord and pull it toward the Front
Panel.
@Then, turn tuning shaft counterclockwise, as the
cord tension will be more constantly obtained.
@®Tie the cord to number @ screw of the dial pulley
(same as procedure 4) ).
After procedures, lock the knots of cord with paint.
2. Attachment of Dial Pointer
1) Close the variable capacitor completely.
2) Set the dial pointer to “0” on dial scale and insall
the dial pointer ass’y (See Fig. 3-2).
Fig. 3-2
Stock No. Description
6036050 Dial Cord (0.6mm¢)

4. ALIGNMENTS AND ADJUSTMENTS
Abbreviation
Equipment Others
AM FM Generator Oscilloscope...........- Genescope ClOCKWISE bcceeedcoudscrewatersareus sees CW.
AM Standard Signal Generator ............ AM SSG Counterclockwise...... ede Brenda ta nceier grate CCW.
FM Standard Signal Generator ............ FM SSG AMMA? ere Pow eed awe ncttale ch Ree aha ks ANT.
FM Stereo Generator...........eec cence eee Stereo SG MOO NATO es sa eticxTas os pends knedae de Xs MOD.
OstillOscOpe: sextet sess ee hdaee veankeyess Scope
Audio Oscillator >< svscxyndoxsetiswees eats Audio Osci.
Distortions Meter wiiecsusateseawe Sean ies Dist. Meter
4-1. Driver Circuit Board Adjustment (See Figs. 4-1, 4-2 and 4-3)
Note: 1. Master Volume......... eee eeeeee Minimum
2. Speaker Selector ..........eeeees SYSTEM (A)
3. Make the SP terminals free (no load).
4. Confirm the AC Power Supply voltage.
5. After adjustment, run the unit for more than 5 minutes, then check and readjust necessary.
6
. Room temperature should be 18~28° (65~83°F) for bias current adjustment.
STEP SUBJECT EQUIPMENT MEASURE OUTPUT | ADJUST | ADJUST FOR CONDITION
1
DC
OV
L-ch
DC
volt
meter
Speaker
terminal
F-1499
|
OV
+10mV
oStep
down
meter’s
range
L-ch VRO1 accordingly
(Fig. 4-7) o Change lead’s polarity if
meter swings backward
2 DC OV R-ch Same as above Speaker terminal F-41499 Same as above Same as above
R-c VRO2
(Fig. 4-1)
3
Bias
current
DC
milliammeter
F-1500
F-1499
19+1mMA
oStep
down
meter’s
range
L-ch FO1 VRO3 accordingly
(Fig. 4-2)
4 | Bias current Same as above F-1500 F-1499 Same as above Same as above
i R-ch FO2 VRO4
(Fig. 4-2)
Fig. 4-1 Fig. 4-2
milliam-
volt meter meter ©
mitliam-
meter
TLLLD PDO PLL
yf
ON LO
VRo2 VRo4
bias current DC OV DC OV bias current
volume volume volume volume

4-2. FM IF Alignment (See Figs. 4-8 and 4-9 on page 10)
Note: 1, Selectofs ..s%desede ss uve vevaswes FM AUTO
2. Master Volume ........eeee eee Minimum
3. Output level of genescope ...... After attenuator
4. Sweepwidth.........sceeeeeeene 1.5~2cm/150kHz
5. Frequency band .......s+sesee 9.5~11.5MHz
GENE SCOPE
6. Connection
eoaeneeernaeeaeese se aase
Connect the output of
genescope to TP.A through 100p ceramic capacitor.
7. Before adjustment, turn both VRO1 and VRO2 CCW (Max.),
VRO3 CW (Max.) and VRO4 to center.
IN
4.7kQ 10pF
DETECTOR PROBE BLOCK
FEED SIGNAL MEASURE
STEP SUB ADJUST ADJUST FOR CONDITION
| ESE | FROM | TO OUTPUT
1 IF coil Output 55dB Base of TRO1| Connected TO1,T02 | Max. IF wave- | oTurn core of T06
Genescope on F-1479 Point between form 1 as CC
(Fig. 4-9 R48 & R50 on Fig. 4-8
TP.A) F-1479
(Fig. 4-9 TP.B)
Use Detector
Probe ~°
2 Meter coil Same as above Same as Connected T06, TO7 Max. IF wave-
above point between from 2
R62 & VRO2 on Set the center
F-1479 of wavefrom 2
(Fig. 4-9 TP.D) with wavefrom
Direct from 1 as Fig. 4-8
Genescope
3 Descrimina- | Same as above Same as Connected T04 Max. linearity
tor coil above point between of S curve
R67 & R68 on TO5 Set the center
F-1479 of S curve
(Fig. 4-9 TP.C) wavefrom 1 &
Direct from 2 as Fig. 4-8
Genescope
4 IF coil Same as above Same as above } 103 Max. noise
4-3. FM Dial Calibration and RF Alignment (See Fig. 4-9 on page 10)
Note: Selector FM AUTO
. Master Volume Minimum
er ee meee e sears nee erase wreesewa
ee ere nese eeowre enn eone
vere em eee ne seers e sevens
. Confirm start point of dial pointer before alignment.
1.
2
3. FM Muting switch OFF (pushed in)
4
5. In Step 3, 4 and 5, 1 and 2 are readjusted, repeat 3, 4 and 5 again.
FM SSG
FEED SIGNAL MEASURE
STEP UBJECT ADJUST ADJUST FOR CONDITION
| aun | FROM | TO | OUTPUT )
1 | 88MHz 88MHz ANT REC OUTLor | L04 Max. output oSet Dial on 88MHz
Dial Calibration | ANT input 60dB terminal | R-ch
1kHz (100% MOD) | 3009 VTVM & Scope FM
FM
SSG
i
cocbyoabreabessboegt
2 | 108MHz 108MHz Same as | Same as Trimmer Same as eSet Dial on 108MHz
Dial Calibration | ANT input 60dB above above TC04 above
1kHz (100% MOD)
FM SSG is
104 = 106
Veaufoordianteno

FEED SIGNAL MEASURE
STEP ——— ADJUST ADJUST FOR CONDITION
3 | Confirm 88MHz | Same as Step 1 Same as | Same as Confirm olf not, repeat from
Dial Calibration above above 88MHz Dial Step 1
. Calibration
4 | Confirm 98MHz | 98MHz Same as | Same as Confirm
Dial Calibration | ANT input 60dB above above 98MHz Dial
1kHz (100% MOD) Calibration
FM SSG .
5 | Confirm Same as Step 2 Same as | Same as Confirm olf not, repeat from
108MHz above above 108MHz Dial Step 2
Dial Calibration Calibration
6 | 88MHz RF Adj. | 88MHz Same as | Same as LO1, LO2, L03 | Max. output eTune FM SSG (Max.
ANT
input
10dB
above
above
indication
of
Signal
1kHz (100% MOD) Meter)
FM SSG
7 | 108MHz RF Adj. | 108MHz Same as | Same as Trimmer Same as Same as above
ANT input 10dB above above TCO1, TCO2, | above
1kHz (100% MOD) TCO3
FM SSG
4-4. FM Signal Meter, Mono Distortion and Muting Adjustment
(See Fig. 4-9 on page 10)
Note: 1. Selector. ..........-ccc cece cececes FM AUTO
2. Master Volume ..............000. Minimum
FEED SIGNAL MEASURE
STE
BEC.
jo
————.
ADJUST
|
ADJUST
FOR
CONDITION
| sab | FROM [To | OUTPUT J
1 | Signal Meter | 98MHz ANT termi- | Signal Meter | VRO2 4.3 on meter oTune FM SSG (Max.
ANT
input
66dB
nal
indication
of
Signal
1kHz (100% MOD)}| 3000 Meter) : ;
FM SSG ; 5 oBefore adjustment, if
ens
meter
swings
out
or
not
enough,
preadjust
VRO2
until
the
reason-
able point
2 | Distortion Same as above Same as REC OUTL | TOS Min. distortion] oTune FM SSG (Nax.
above
or
R-ch
indication
of
signal
Dist. meter meter)
& Scope
3
|
Muting
Level]
98MHz
Same
as
REC
OUTL
|
VRO3
Audio
signal
oSet
FM
MUTING
sw
itch
ANT
input
24dB
above
or
R-ch
just
muted
to
OFF
(pushed
in)
1kHz (100% MOD) VTVM &
FM SSG Scope
Tielman iit i a Eg Tk ee OP ee ale FU ely Lig Mos

4-5. MPX Alignment (See Fig. 4-9 on page 10)
Note: 1. Selector ......ccccscccccccecceeens FM AUTO 4. Before adjustment, turn VRO1 CW (Max.) and VRO5 to
2. Master Volume..........0.cececeee Minimum center.
3. FM MUTING switch ............. OFF (pushed in)
STEREO SG
AUDIO OSC!
FEED SIGNAL MEASURE
STEP SUBJECT | FROM TO OUTPUT ADJUST ADJUST FOR CONDITION
1 19kHz 98MHz ANT REC OUT || LO08 Max. output oTune FM SSG (Max.
coil ANT input 60dB terminnal L-ch indication of signal _
FM SSG 3002 VTVM & meter) .
Pilot 19kHz Scope
(10% MOD)
L-ch 1kHz
(45% MOD)
R-ch (0% MOD)
Stereo SG
2 Separation Same as above Same as REC OUT VROS Min. output
above R-ch
VTVM &
Scope
3 Cofirm 98MHz Same as REC OUT Min. output olf less the 37dB adjust
Separation ANT input 60dB above L-ch VRO5
| FM SSG VIVM &
Pilot 19kHz Scope
(10% MOD)
L-ch (0% MOD)
R-ch 1kHz
(45% MOD)
Stereo SG
4 Indicator 98MHz Same as Stereo indi- | VRO1 Lighting Point |} oTune FM SSG (Max.
(Lighting ANT input 39dB above cator lamp indication of signal
level) FM SSG meter)
Pilot 19kHz
(10% MOD)
Stereo SG
4-6.
AM
IF,
Dial
Calibration,
RF
and
Signal
Meter
Alignment
(See
Figs.
4-5,
4-6,
4-7
and
4-9
on
page
10)
Note:
1.
SéleClOfviiicctciiewas
cceyetnue
ks
AM
2.
Master
Volume
............
eee
eee
Minimum
3.
Confirm
start
point
of
dial
pointer
before
alignment.
4. In
case
of
using
loop
antenna,
increase
output
of
AM
SSG
for
26dB than
bar
antenna’s
direct
input
as
it
attenuates
input
sensitivity
for
26dB
(See
Fig.
4-4).
3. After adjustment of signal meter, confirm the meter’s swing on FM. (If meter swings out or not enough, readjust VRO2.)
(See Page 8)
Fig. 4-4
Ci} BAR ANT
LOOP ANT
60cm

STEP|
SUBJECT
=
MEASURE
|
anjyust
|
ADJUST
FOR
CONDITION
FROM
|
TO
OUTPUT
1
|
IF
coil
Output
70dB
OSC
trimmer
|
Connected
TO8
Max.
IF
wave-
oTurn
core
T09
&
T10
Genescope
cap.
(TC06)
Point
bet-
form 1
Fig.
4-5
CCW.
Fig.
4-9
ween
R130
&
R136
on
F-1479
‘
(Fig.
4-9
TP.E)
2 |
IF
coil
Output
55dB
Same
as
TO9
Max.
IF
wave-
Genescope
above
form
2
Fig.
4-6
3
|
IF
coil
Output
45dB
Same
as
T10
Max.
IF
wave-
|
olf
not,
readjust
T08
&
Genescope
above
form
3
Fig.
4-7
TO9
slightly
4
|
535kHz
535kHz
Bar
ANT
REC
OUTL
T11
Max.
output
olf
broadcasting
station
Dial
calibra-
|}
ANT
input
60dB
or
R-ch
is
near,
it
might
be
used
tion
400Hz
(30%
MOD)
VTVM
&
‘es
aot
[de
Use
loop
ANT
aus
06
5
|
1400kHz
1400kHz
Same
as
Same
as
Trimmer
Same
as
above
Same
as
above
Dial
Calibra-
ANT
input
60dB
above
above
TC06
tion
400Hz
(30% MOD)
clrvcbarsteitreadaurl
AM
SSG
200
i
1605
Use loop
ANT
6
|
Confirm
600kHz
Same
as
Same
as
Confirm
olf
dle
repeat
from
600kHz
ANT
input
60dB
above
above
600kHz
Dial
Step
4
Dial
Calibra-
|
400Hz
oe
MOD)
Calibration
tion
AM
§
Use
ae
ANT
7
|
Confirm
1000kHz
Same
as
Same
as
Confirm
1000kHz
ANT
input
60dB
above
above
1000kHz
Dial
Dial
Calibra-
|
400Hz
(30% MOD)
Calibration
tion
AM
SSG
Use loop
ANT
8
|
Confirm
Same
as
Step
5
Same
as
Same
as
Confirm
olf
not,
repeat from
Step
5
1400kHz
above
above
1400kHz
Dial
Dial
Calibra-
Calibration
tion
9
|
600kHz
600kHz
Same
as
Same
as
Bar
ANT
Max.
output
RF
Adj.
ANT
input
50dB
above
above
L701
400Hz
(30%
MOD)
AM
SSG
Use
loop
ANT
10
|
1400kHz
1400kHz
Same
as
Same
as
Trimmer
Same
as
above
RF
Adj.
ANT
input
50dB
above
above
TCO5
400Hz
oe
MOD)
AM
S
Use oon
ANT
11.
|
Signal
Meter
|
1000kHz
Same
as
Same
as
F-1479
4
on
meter
oTune
AM
SSG
(Max.
ANT
input
100dB_
|
above
above
VRO6
indication
of
signal
400Hz (30% MOD)
AM SSG
Use loop ANT
meter)
o Before adjustment, if
meter swang out or
not enough, preadjust
VRO6 until the reason-
able point
Fig. 4-5 Fig. 4-9
VRO5 cM st
stereo
@ separation
volume
VRo1
FM ator (@)
indicator ((AY
volume (S
Fig.
4-6
FM
muting
volume
@
Gy
"
D
f
i
“o
VRo2
R67
OG
AO!
S
signal
FM
ion
ae
meter
meter
volume
volume
To3
discriminator transformer
Lie
YO
FM
IF
coil
au
IF
Fig.
4-7
ae
ae
(15kQ)
Qs”
F-1479
Tos
R48
aah
IF
e
coi
AM
OSC
.
coil(535kHz)
(OSM
Fananes
Fig.
4-8
=
—
FM
AO
(res coil
| AMOSC <4 L. Loa, FMosc
waveform 1 Sopot 06 of Kd (SEM Hz)
FM Ae <i {03 Or
trim
trnren 7 ‘02 =i
AM RF 1 0510,
(aOR)
> tout
FM RF-———-TC01}Q,))
trimmer C——
(108MHz) ae
waveform
3
i
10

5.
TROUBLESHOOTING
CHART
5-1.
Troubleshooting
on
Power
Supply
Section
Symptom
Check
Point
1.
No
power
supplied
to
each
section
1-1.
Each
lamp
not
lighted
1.
2
3
4.
5
6.
1-2.
Each
lamp
lighted
1)
+33V
not
supplied
to
emitter
of
TROS
and
+-13.6V
not
supplied
to
emitter
of
TRO6
on
F-14500
Zi
8.
9.
10.
2) +35V not supplied to terminal ((04]) on
F-1499--__— 1,
=
| 13
. Defective TROT, TRO2 on F-1500
3) —35V not supplied to terminal ({12]) on
F-1499 14.
s
16. Defective TRO3, TRO4 on F-1500
4) Normal voltages supplied to each terminal on F-1500 17,
18.
‘19.
20.
5-2. Troubleshooting on Audio Section
1. Quick acting fuse open
1-1. After replacement, fuse open mE
Zz
3. Defective TRO7 (TRO8) on F-1499
1-2. After replacement, fuse not open
1) DC Bias current adjustable ———————————————4.
2) DC Bias current not i ———
6
. Defective TRO5 (TRO6) on F-1499
3) Center voltage adjustable-———-——__—_—_—_—_—__7
4) Center voltage not adjustable
1
11
Cause & What to Do
Imperfect contact of power supply plug
Defective power switch $11
. Imperfect contact of voltage selector
Powet fuse F701 open
. FO5 on F-71500 open
Defective power transformer
FO7, FO8 on F-1500 open
Defective D0O5, DO6 on F-1500
Defective TRO5, TRO6 on F-1500
Defective ZD01, ZD02 on F-1500
FOT, FO2 on F-1500 open
Defective D01, DO4 on F-1500
FO3, FO4 on F-1500 open
Defective D02, DO3 on F-1500
FO6 on F-1500 open
Defective D07, D08 on F-1500
Defective TRO7, TRO8 on F-1500
Defective Relay RY101 on F-1500
Defective TRO1, TRO3 (TRO2, TRO4) on F-1500
Defective TROY, TR11 (TR10, TR12) on F-1499
Set the current to +-19mA by VRO3 (VRO4)
Defective VRO3 (VRO04) on F-1499
Set the center voltage to OV by VRO1(VRO2)
on F-1499
8. Defective TRO1, TRO3 (TRO2, TRO4) on F-1499
9. Defective TRO5 (TRO6) on F-1499
. Defective DO1, DO3 (DO02, DO4) on F-1499
11.
Defective VRO1 (VRO2) on F-1499
2. AUX inoperative |
Symptom Check Point
2-1. Both channels inoperative —_—_—__—____12.
2-2. One channel inoperative
1) Land R-ch will be operative when
MONDO switch is pushed in (It’s MONO position)
2) One channel will be inoperative when MONO
switch is push in 14.
1):
‘6,
7.
18.
1D:
3. MIC — —
2.
22
4. PHONO inoperative
4-1. Both channels inoperative 23:
4-2. One channel! inoperative
1) Reverse the output cords of L and R-ch from
turntable
1-1) Inoperative channel pe te
25
1-2) Inoperative channel not ae Bia
27,
5-3. Troubleshooting on Tuner Section
1. Both FM and AM inoperative (PHONO operative)
1-1. Both channels inoperative
1) 13.6V not supplied to terminal [03], [06], on F-1479-——1.
2) 13.6V not supplied to terminal [03], [06], on F-14792.
1-2. One channel inoperative
1) AM section inoperative
2) FM section ee
2. FM Section
*Before check, set MUTING switch to OFF (Pushed in)
2-1. FM inoperative only
1) Tune FM signal or FM broadcasting station
1-1) Signal meter operative
(Interstation noise too low compared
with proper unit)
CO wo Om 10.
to page 12
LS:
Du Rw
Cause & What to Do
Defective power supply section (F-1500)
Imperfect contact of SELECTOR switch
S9a (S9b)
Defective TRO1, FETO1 (TRO2, FETO2) on
F-1504
Imperfect contact of TAPE MONITOR
switch $1, 52, MONO switch $3
Defective BALANCE volume VRO1
Imperfect contact of SELECTOR switch
$9a (S9b)
Imperfect contact of SP SELECTOR switch
$10a, $10b
Defective F-1499
Defective power supply section (F-1500)
Defective TR601, TR602 on F-1504
. Imperfect contact of MIC jack
Defective power supply section (F-1500)
Imperfect contact of the output cord
. Defective turntable
Defective
TRO1,
TRO3
(TRO2,
TRO4)
on
F-1503
Imperfect
contact
of
SELECTOR
switch
$9a
(S9b)
Defective power supply section (F-1500)
Imperfect contact of SELECTOR switch S9c
Defective SELECTOR switch $9a (S9b)
Defective SELECTOR switch $9a (S9b)
Defective TR17 (TR18) on F-1479
Defective Low Pass Filter L.P.F. 11
. Defective ICO1, [C02 on F-1479
. Defective TO1~TO5 on F-1479
. Defective DO1, DO2 on F-1479
Defective IC03 on F-1479
itil a eS

Symptom Check Point
* from page 11
E24) Signal meter inoperative 1%,
IZ,
13.
1
Cause & What to Do
Defective CFO1~ CFO3 on F-1479
Defective FETO1, TRO1, TRO2 on F-1479
Defective TRO5~TR10 on F-1479
. Defective LO1~LO3 on F-1479
15. Defective TO1~TO5 on F-1479
IF, RF out of adjustment on F-479
Defective TR11, TR12 on F-1479
Defective T06, TO7 on F-1479
Defective D03, DO4 on F-1479
Defective VRO2 on F-1479
21. Defective signal meter
. Muting circuit inoperative
(Signal meter operative) 7)
2
2
No channel! separation on FM stereo broadcasting
*Confirm that SELECTOR switch is set to FM AUTO
*Confirm signal meter operates
1) Indicator lamp not lighted
2) Indicator lamp lighted
3. AM Section
3-1. AM inoperative
1) Interstation noise changes by touching the terminal
[04] [04] on F-1479
- -1) 4
1-
-2) No change ———-—____
3-3. Signal meter inoperative 44,
(AM broadcasting sound can be heard) 45
| 46
47
48
1
2
3
4
5
. Signal meter inoperative 16.
(FM broadcasting sound can be heard) 47.
18.
19.
20,
1
2
3
4
5
6
22. Defective TR13~TR15 on F-1479
. Defective TR19, TR20 on F-1479
. Defective DO5 on F-1479
. Defective VRO3 on F-1479
26. Imperfect contact of MUTING switch S8
Defective the indicator lamp PL726
. Defective TR16 on F-1479
. Defective LO8 on F-1479
. Defective 1CO3 on F-1479
. Defective VRO1 for indicator lamp on
F-1479
. Defective VRO5 for FM stereo separation
on F-1479
. Defective F-1500
Defective TR16 on F-1479
Defective bar antenna
. Defective TR24 on F-1479
7. Defective T11 on F-1479
8. Variable capacitor shorted
. Defective DO7 on F-1479
. Defective TR21~TR23 on F-1479
. Defective TO8~T10 on F-1479
3-2. om
43
. IF out of adjustment on F-1479
Defective D06, DO7 on F-1479
IF, RF out of adjustment on F-1479
. Defective TR25 on F-1479
. Defective D08, DOI on F-1479
. Imperfect contact of VRO6 on F-1479
. Defective signal meter

6.
PARTS
LOCATIONS
AND
PARTS
LIST
6-1. F-1479D Tuner Circuit Board (stock No. 7520710 Complete Circuit Board F-1479D)
Parts List |
Parts
No.
Stock
No.
Description
Position
Parts
No.
Stock
No.
Description
Position
TRo1
0305801
25C1047(B)
1A
Loa
4220530
OSC
Coil
1A,
B
TRoz
0305802
2$C1047(C)
1A
Los
4290110
Choke
Coil
.
1A
TRo3
0305790,
1
25C930(C,D)
1B
Los
4290011
3.54H
Chock
Coil
TRo6
0306113
2S8C738(D)
1B
Loz
4290011
3.5uH
Choke
Coil
1D
TRo7
0306113
2SC738(D)
1B,C
Los
4240720
19kHz
Coil
1E
TRos
0306113
28C738(D)
(as
TRos
0306112
28C738(C)
ne
LCo1
4240710
MPX Coil
Le
TRio
0306112
28C738(C)
1c
LPFo1
0910210
Low
Pass
Filter
2E
TR
0305791
258C930(D)
Tc
TRi2
0305791
25C930
(D)
1,2C
VCo1~04
1220130
Variable
Capacitor
2A...
6
TRi3
0305733
2SC711(G)
2D
Col
0669368
6.8pF
+0.25pF
50V
C.C.
2A
TRi4
0305733
28C711(G)
Transistor
2D
Co2
0657102
0.001
wF
50V
C.C.
1A
TRis5
0300291,2
25A678(6,
7)
2D
Co3
0659015
2200pF
1A
TRié
0300221
25A562(Y)
2D
Co
0659015
2200pF
1A
TRi7—s-:
0306141.
~—-28C1362@)(7)
1E
Cos
0659015
2200pf
SoV
CC.
1A
TRi8
0306141
28C1362©
(7)
2E
Cos
0659015
2200pF
1A
TRig
«0306131,
2
28C1364
(6,
7)
2E
Coz
0669370
10pF
+5pF
S50V
C.C.
1,2A
TR2o
0306131,2
25C1364
(6,
7)
2E
Cos
0679023
0.39pF
+5%
S5OV
CLC.
TRa21
0305992
2S5C403C
(4)
2B
Cos
0669370
10pF
+5pF
50V
C.C.
2A
TR22
0305992
2SC403C
(4)
2C
Cio
=
=
0669212
12pF
+5%
S50V
C.C.
1A
TR23
0305992
2SC403C
(4)
oG
Ci
0656223
0.022
uF
50V
C.C.
IA
TR24
0305991
25C403C
(3)
28
C12
0660221
220pF
+10%
SOV
C.C.
IA
TR25
0305991
25C403(3)C
2C
C13
0669210
10pF
+5%
SOV
C.C.
IA
C14
0669218
18pF
+5%
SOV
CC.
IA
1Co1
0360070
pcS55A
1c
Cis
0657223
0.022
uF
:
1A
I1Co2
0360070
ppcS55A
IC
ID
C16
0657223
0.022
uF
hs
5%
50V
CC.
1B
1Co3
0360080
HA1120
1E
sai
amc
ae
He
Cis
0669210
10pF
+
5%
at
a
1A,
8B
FETio1
0370132
3SK41K(1)
FET
1A
ie
ee
re
arg
ra
:
:
C21
0669369
8.2pF
+0.25pF
50V
1B
Dol
0311060
1N60P
1D,
E
C22
0657223
0.022
sov(
oC
1B
Doz
0311060
1N60P
1D,_E
C23
0669375
15pF
&+5%
50V
1B
Dos
0310331
1N60
26
C26
0657223
0.022
uF
1B
Dos
0340090
DS430
-
2D
C27
0657223
0.022
uF
18
Dos
0340090
D$430
Diode
2D
C28
0657223
0.022
uF
Ke
Dos
aai0581
INGO
2B
C29
0657223
0.022
4F
iG
ae
pe
ots
eee
rene
C30
0657223
0.022
uF
1
C31
0669218
18pF
1c
Dos
0310331
1N60
2c
C32
0669224
.
33pF
1c
Dos
0310331
1N60
2c
C33
0657223
0.022
uF
1c
Tor
4235890
—-10.7MHz(WHITE)
1A,8
=e
0657223
0.0224
ss
To2
4235900:
10.7MHz
(BLACK)
FM
IFT
1B
e
0657228.
0.022ut
36
0657223
0.022
uF
2G
Tos
4235860
10.7MHz
(BLACK)
1D
C37
0857223
0.022
uf
gov
cc.
1D
Tos
4235750
10.7MHz
(PINK)
OW
tac
tee:
ID
C38
0657223
0.022
nF
2D
Tos
4235760
10.7MHz
(BLUE)
Coil
1D
C39
0657223
0.022
uF
1D
Tos
4235840
10.7MHz
(BLUE)
side
1,2D
C40
0657223
0.022
uF
1D
To7
4235920
10.7MHz
(BLACK)
,
1,2D
Cal
0657223
0.022
uF
1D
Tos
0910180
YEL-455E2
one
er
1,28
Cae
0669226
47
pF
2D
eramic
Filter
Tos
4230610
455kHz
(BLACK)
ye
ce
Oesizee
eee
re
Tio
4230580
455kHz
(BLUE)
ONE
IET
26
=
olen
nee
a
i
A220800"
RM
Oe
Sol
a7
Caz
0657223
«0.022
/F
2D
CFo1
0910150
—
SFE-10.7MA-M
1B
Cas
0657223
(0.022uF
2D
CFo2
0910150
—
SFE-10.7MA-M
Ceramic
Filter
1C
C49
0573108
O.1uF
+20%
25V
T.C.
2D
CFos
101
-10.7MA-
iC
C50
0660101
100pF
1D
pete
einen
Csi
0660101
pea
110%
SOV
CC.
1p
Lot
4200560
FM
ANT
Coil
1A
Cs2
0519001
10
uF
25V
EC.
1D
Loz
4210300
FM
RF
Coil
1,2A
C53
0660101
100pF
+10%
SOV
C.C.
1D
Los
4210300
FM
RF
Coil
1A
C54
0513479
4,7
LF
25V
EC.
2D
13

Conductor Side
28C1047
2SA678 2S8C1362 28C711
2SA562 2SC403 2S$C1364 28C930 280738
8 ec B BC E
EC
B
£¢
E
c
B
IN60
3SK41 1IN60P 181007-J DS430
1. Drain
2. Gate 2
3. Gate 1
4. Source
ees and Case —
PartsNo.
Stock
No.
Description
Position
Parts
No.
Stock
No.
Description
Position
Parts
No.
Stock
No.
Description
Position
Parts
No.
Stock
No.
Description
Position
.
0657223
0.022
uF
wee
50V
C.C.
2D
Se
0669226
47pF
£5%
SOV
C.C.
1,2C
R30
0106101
1000
+5%
Www
sr
1B
Ro4
0106102
1kO}
+5%
Y%w
ocr
IDLE
56
0519104
1.5uF
+20%
50V
EC.
2D
93
0601476
ee)
tele
Bagh
igee-2
R31
0106151
1502
+5%
WW
CR
IC
R65
0106102
1kO.
(E.LR.)
1D,
E
Cs7
0515339
3.3
uF
50V
EC.
20
C95
0601476
0.0047
uF
OC
(E.L.R.)
Rés
0107100
100
1D
Css
0512221
220
uF
16V
EC.
2E
C6
0600107
O.0l“F
+5%
S50V
MC.
2C
R32
0107182
18k
45%
WwW
CR
1B
R67
0107102
1k}
|
+5%
Ww
Cr
1,2D
C59
0657223
0.022uF
50V
C.C.
IE
C97
0601477
0.047uF
+10%
SOV
MC.
2C
R33
0106472
4.7kO,
1B
Res
0107153
15x02
|
2D
Coo
0515339
3.3
uF
50V
EC.
1€
Ce
0510101
100
uF
b3V
EC.
2D
R34
0106151
150.0
1c
bo, UW Res 0106152 1.5kQ, 2D
Ce
0629001
6800pF
+5%
SOV
P.C.
IE
Cos
0657473
0.047
uF
50V
C.C.
2C€
R3s
0106221
2200)
)
2"
8
(EL
_
1B
R70
0106105
re
+5%
YW
CR.
2D
Ce?
0512100
10
pF
16V
EC.
2€
C103
0620221
220pF
+5%
SOV
P.C.
2D,E
.
Raé
0106153
15kQ,
SS”
A
Base
R71
0106153
15k
/
(ELR.)
2D
Ces
0600187
a
sia
lators
sau
yee
1E
C104
0669215
15pF
+5%
50V
CC.
R37
0106471
4700
1c
R72
0106560
560,
2D
Coa
0600187
0.018
pF
2E
C105
0657223
0.0224
50V.
C.C,
R38
0107479
470
£5%
WwW
CR
IC
R73
0107473
ATKO,
2D
Cos
0519105
2.2
pF
|
ike.
C106
0601687
0.068
uF
50V
MC.
Ra9
0106101
100QX
£5%
MW
SR
IC
R74
0107472
4.7kO,
2D,E
Cos
0519105
ae
ee
Rao
0106151
150
+5%
YW
CR
IC
R75
0107479
4.70,
2D,E£
Cor
0519105
2.2
uF
1E
‘
_
(E.LR.)
R76
0107103
10kQ
1,2
Cos
0519105
2.2
uF
1,2
a
Orenios
+5%
“wer
!A
Rai
0107182
18kQ
+5%
YW
CR
IC
+5%
YW
CR
|’
Ro?
0107181
1800
~
ou
R77
0107100
100
2:D5.°E
Ces
0657223
0.022
pF
1B
Ra2
0106472
A7kKQ
+£5%
YW
CR
IC
a
aaa
MOE
GO
FEE
on
Roa
0106104
100kQ
1A
(E.LR.)
R76
0107104
100k0
2D,E
; R79 0107151 1500, 1
Zs
Mesias
a.anf
20%
SOV
EC,
28
Ros
0106224
220k0
|
coe
iw
1A
R43
0107222
22k
£5%
YW
CR
IC
:
E
Cn
0601107
0.01
uF
50V
MC.
2B
C.R.
(E.L.R.)
R
%
1
ae
onertss
0.047
iF
a
Roe
0106222
2.2kQ
1A
R4s
0106221
2200
IC
81
«0106472
47kQ
+5%
MW
CR
2E
;
50V
C.C.
Ros
0106102
1kO
1A
R46
0106153
kA;*ASS
YW
1c
EER
C74
0669215
1
5pF
2B
4
Reo
0107151
1500
+5%
1}
e.
yeas
ee
Eee
oon
;
Raz
0106471
4700
CR
(ELR)
1C
50
£5%
AW
CR
1,2E
ak,
.
ste
Cc.
Roy
0107220
220
+5%
YW
CR
IA
Ras
0106100
100
iC
R83
0106561
5600
+5%
YW
CR.
ae
Bbaose
Se0e
levee
er?
ee
Rio
0106221
eon
+5%
VW
CR
IA
Rag
0107479
470
+5%
VW
CR
IC
Sou
aees
psi
ee
27pF
£5
%
SOV
CC.
28.C
Ru
0106121
1200
(ELR.)
1A
Rso
0106102
Ka).
eee
Rea
0107822
B.2kQ
+5%
WW
CR
1,2E
C78
ae
|
SOV
C.C.
28
Ri2
0107682
6.8kOQ
+5
%
Yw
CR.
1A
R51
0106473
47kO
+
5
%
Uw
Ic
Ras
0106332
3.3kQ
+54
4
I4w
cr.
IE
C79
0657473
0.047
uF
2B
R13
0106473
47kQ
+5%
YW
CR
1A
Rs
0
15kO,
C.R.
(E.L.R.)
R86
0106332
3.3k
QO
(E.L.R.)
2E
Ca0
0512470
47
pF
16V
EC.
28
(E.L.R.)
R
:
see
aa
hee
OF”
4
ik
Cal
0657473
0.047
uF
2c
Ris
0107102
1k
+5%
YW
CR.
1A,8B
a
rere
P
Q)
=
ie
PS
ae
to
be
continued
Cer
0657473
(0.047
nF
2C
Ris
0106152
1.5k2
1B
£5%
"ww
CR
VC
50V.
C.C.
R55
0106821
8200
(E.L.R.)
2C
C33
0657473
0.047
uF
2C
Rié
0106220
220,
ee
1B
R56
0107103
10kQ
1
Cu
0657473
0.047
j1F
2C
Ri7
o106222
kn
(tS%
AW
CR
15
J
(E.L.R.)
Rs7
0107101
1000,
1,2D
Ces
0512100
100F
16V
EC.
2C
Ris
0107122
1.2k0,
1B
Rss
0107100
100,
1
=—Abbreviations=—
C86
0657473
0.047
uF
50V
C.C.
2C
R23
0107221
22000
+5%
WW
CR.
1B
Rso
0107103
10k,
+5%
YAW
CR.
|
RE
C37
0601108
O.1uF
+10%
SOV
MC.
2C
Roa
0106152
1.5k0,
1B
Ren
ios
6.840,
1,2D
C.R.
:
Carbon
Resistor
BP.E.C.:
Bi-Pola
Electrolytic
Cee
0512470
47
uF
16V
EC.
2C
Res
0106151
sou
1B
R
Be
Ste.
it
“soli
esis
or
Capacitor
0657473
+5%
JAW
CR.
61
0107479
4.70,
1D
Ce.R.
:
Cement
Resistor
C.C.
=:
Ceramic
Capacitor
Cae
0.047
uF
2C
R27
0106183
18kO
(E.L.R.)
1B
Reée
0106392
390
+5%
1
M.R
i
Fi
i
i
i
Coo
0657473
0.047
uF
50V
C.C.
2C
Re
0106471
4700,
“1B
eo
Oe
ny
=e
oa
s
a
oie
_
4
a
oie
eae
oa
‘
LR,
esisto
&.
:
|
Capacitor
C91
0657473
0.047
yF
2C
R29
0107479
470
45%
Www
CR
1B
Ré3
0107683
68kQ
+5%
YW
CR
2D
M.C.
:
Mylar
Capacitor
P.C.
:
Polystyrene
Capacitor
4 :
E.C. +: Electrolytic Capacitor T.C. : Tantalum Capacitor
14

771
F-1479D Parts List
6-2. F-1504 Mic. & Tone Control Circuit Board (Stock No. 7560750 Complete Circuit Board F-1504)
Parts No. Stock No. Description Position Conductor Side
R87 0106184 180kQ, 1E
Rss
0106332
3.3kQ
1E
2801362
Reo 0106273 27kQ, 1E |
Roo
0106184
180kQ,
1E
-
RoI
0106332
3.3k0,
2E
—
=
.
-
R92
0106273
27kQ,
2E
é
——
:
é,
B
R93
0106332
33kA5+5%
YW
CR
IE
:
Sac
;
ae
ve,
:
y
~~
R04
0106391
3900,
.
(E.LR.)
16
ani
;
:
Wie
%
;
.
+
Ros
0106332
3.3k2,
1,2E
pene
<
:
3
s
¢
:
E
R96
0106391
3900,
2E
Galt
R97
0106332
3.3kQ,
2E
k2a)
R98 0106562 5.6kQ 2E
Rog
0106332
3.3kQ,
2E
N
i
i
y
R100 0106562 5.6kQ 2E
R102 0107103 10kQ, 28 321
R103
0107220
220,
28
:
e
1
1.
Drain
Rioa
0107102
1a,
ts%
AW
CR
op
2.
Gate
R105
0107224
220k0)
1,2B
3.
Source
R106 0106561 5602 +5% WW CR. 1,28
R107 0107561 5602 | (E.LR.) 28
R108 0107392 3.9kQ) 45%. YW CR. 2B ;
Rio9
0107123
12kQ,
2B
Parts
List
Rito
0106332
3.3kQ
+£5%
YW
CR
1B.C
a
”s (E.LR.) Parts No. Stock No. Description Position Parts No. Stock No. . Description Position Parts No. Stock No. Description Position
Rin
0107272
2.7kQ,
28
a
Sa
a
Ri12
nto7i00
Gi
£5
%
YW
CR
op
TRo1
0306141
—
28C1362
(7)
|
1B
Ror
=
0107103
py
+5%
¥weer
|8
Réo2
0107103
10kQ
1A
Ring
Bigki
on
1k
£5%
YW
CR
2B
TRo2
0306141
2S$C
1362
(7)
fie
i
1C
Ro2
0107103
HOR
Of:
See
ze
eB
R603
0107104
100kQ
1A
|
a
(E.L.R.)
TRéot
=
0306141
2S
1362
(7)
|
EQNS
1A
Ros
0106183
ee
+5%
YW
CR.
2B
Reoa
0107821
8200
1A
er
0107223
22k
+5%
VW
CR
2B
TRé02
0306141
2$C1362
(7)
1A
Ros
0106183
18kQ
(E.L.R.)
2B
R605
0107224
220k0,
1A
Riis
0106332
3.3k0
2B
ies
pas
4700,
18
Roos
0107562
5.6kQO
1A
Rise
0106102
ko
OC
FETo1
0370060,1
2SK24
(E,
F)
—
ie
Ros
0107471
4700,
1B
R607
0107391
3902,
1A
Ruz
0106124
=
120k
eA
vie
FETo2
—0370060,1
2SK24
(E,
F)
1D
Ror
0107334
330k0
1B
Reog
0107104
MO
Poe
AW
CR
oye
+ eRe
Rig
anesee
6800)
°”
ee
=
1,2C
Ros
0107334
330k.
he
Reos
0107681
6802
1A
Rive
0106562
56kO
CRT
og
Col
0620471
470pF
3
2B
Ros
0107474
470k,
1B
R610
0107333
33k,
1A
Cc £5% SOV PC. Rio 0107474 470kQ,
R120
0106822
8.2kQ
BG
ie
0620471
470pF
28
+5%
Ww
cr
1S
Ren
0107101
1002
TA
Ra
nen
470,
aC
Co3
0600277
0.027uF
+5%
SOV
2B
Rin
0107682
6.8k2,
1B
Ré12
0107101
1000
1B
Rigs
n107470
pera
oC
Cos
ss:
0600277
0.027uF
+£5%
S50V
2B
Ri2
0107682
6.8kO,
1c
R613
0107101
1002
1B
R123
0107101
a
+5%
YW
CR
9¢
Cos
0601228
=
0.22ur_
10%
sov(
MC
18
Ris
0107821
8200
1,2C
R124
0106102
1kO
2C
Cos
0601228
0.22uF
+10%
S50V
1B
Ria
0107621
8200,
é
12
VRo1,
02.
+=-1010940
250kQ.
(MN)
BALANCE
Volume
2C
R125
0106471
4702
of
1
Lac
Co7
0519102
3.3
uF
50V
1B
Ris
0107822
8.2kO
1,2C
VRo3,
04
1010920
250kQ
(B)X
2
VOLUME
DB
KC
+5%
AW
CR.
Cc
EC,
Ris
0107822
8.2k0
R126
0106223
22k,
(E.L.R.)
2C
08
0519102
3.3
uF
'
50V
i
2D
VRos,
06
1010930
100k
(B)x
2
BASS
Volume
2D
R127
0106103
10kD
2C
Cos
0600826
0.0082uF
+5%
50V
2C
Ri7
0106104
eee
Se.
MW
“ER.
2CyiD
VRo7,
08
1010930
100kQ
(B)X2
TREBLE
Volume
2D
Bins
0107101
ae
oC
Cio
0600826
0.0082uF
+
5%
50V
2€
Ris
0106104
100k
(ELR.)
2C
Rize
0107272
27k)
+5%
YW
CR.
2C
oe
0.0056
uF
:
ae
50V
2D
e
see
ee
1,2D
Sol
1130770
2A,
8B
R130
0107153
15kQ,
2C
12
6005
0.0056
uF
+
§
ie
50V
M.C
2D
;
R
mae
1,2D
So2
1130770
2A
Ri3i
0106102
1kQ)
+5%
YW
CR.
2C
Ci3
0600477
0.047uF
+57
50V
2D
al
=
3.3k0,
1,2D
So3
1130770
Push
Switch
(5
Stage)
2B
ec
ee
C
g
R22
0107332
3.3k0,
R132
-
9106472
47kO
(E.LR.)
2C
14
0600477
0.047uF
+5%
50V
2D
.
2D
So4
1130770
2B
R134
0107473
47kQ
2C
Cis
0600337
0.033uF
+5%
50V
2D
R23
0107823
82kQ,
2D
Sos
1130770
2A
R136
0106332
3
nok
+5%
YW
CR
o¢
Cis
0600337
0.033uF
+5%
50V
2D
R24
0107823
82kQ,
2D
R137
0106562
5.6kQ
ps
ole
deed
eeub
SOV}
eG
16.0
es
ee
crepe
1,2D
Joi
2430240
Microphone
Jack
R138
0106562
5.6kO.
+5%
YW
CR.
Ci8
0519105
2.2
UF
50vV]
~~
2D
R26
0107222
2.2k0,
1,2D
Ri39
9106471
ou
(E.L.R.)
Cig
0660101
1
00pF
a
ae.
US
R27
0107123
12kQ,
1,2D
C. 0107123 12kO,
Ri40
0107331
3300
+5%
1
R
C20
0660101
100pF
50V
1D
Rog
ib
Soe. AW GR C21 0510101 100F 63Vi_. 1¢ Rae 0107624 B20kO) (ore AW. GR ac
VRo1
1035190
100k2(B)
1,2D
ea
Stent
100uE
6.3VJ
"1D
edie!
eat
1D
VRo2
1035170
47k.Q(B)
2D
C601
0573159
1.5
pF
25V
T.C.
1A
R31
0107474
470kQ
LCD
10
VRo3
1035190
100k(2(B)
)
Semi-Variable
Resistor
2D
ooze:
-
+0660
1>!
beter
WV
ce.
A
ies
vara
hein
1D
—
shes
a
\
C
0660101
100pF
Cc.
R3
0107222
2.20.
=
—Abbreviations——
VRos
1035070:
1kQ(B)
(Solid
Type)
2E
sa
ane
oy
sa
;
ao:
1c
:
:
VRoé
1035170
47k.
2B)
2D
Coos
0519103
0.47
uF
50V
1A
R34
2
2.2k0,
1D
C.R.
:
Carbon
Resistor
BP.E.C.:
Bi-Pola
Electrolytic
C605
0510101
100
uF
6.3V
1A
R35
0107103
10kQ
ie
S.R.
:
Solid
Resistor
Capacitor
C606 0515101 100 pF 5ov 5 E.C. 1A R36 0107103 10kQ 1D Ce.R. : Cement Resistor C.C. +: Ceramic Capacitor
C607 0515101 100 uF 50V 1A R37 0107104 100kQ 1C,D M.R. : Metallized Film Mi.C. : Mica Capacitor
Coos 0515101 100 uF 50V 1B R3g 0107104 100k2, 1D Resistor 0.C. : Oil Capacitor
C609
0620391
390
pF
50V
P.C.
122
Réo1
0107103
10kO
1A
M.C.
:
Mylar
Capacitor
P.C.
:
Polystyrene
Capacitor
E.c. : Electrolytic Capacitor T.C. : Tantalum Capacitor

6-3.
F-1503
Equalizer
Circuit
Board
(Stock
No.
7550520
Complete
Circuit
Board
F-1503)
Conductor Side
Parts List
Parts
No.
Stock
No.
Description
Position
eee
1
2SC1313B
(F,
G)
or
TRoi
0306011
2$C1222
(E,
F)
28
or
lgeselan
1
25C1000
(GR,
BL)
lie
he
1
25C1313®
(F,
G)
or
:
TRo2
0306011
2$C1222
(E,
F)
2A
or
l actias
1
2SC1000
(GR,BL)
Shei
0306070,
1
25C1313B
(F,
G)
are
or
TRo3
0306011
2$C1222
(E,
F)
28
or
0305880,
1
2SC1000
(GR,
BL)
[ae
1
2SC1313®
(F,
G)
or
TRoa
0306011
2$C1222
(E,
F)
2A
or
ee
1
25C1000
(GR,
BL)
Co
0573159
1.5
pF
seh
1B
Co2
0573159
1.5
pF
25V}
“1A
Co3
0660330
33
pF
50V
1B
Co4
0660330
33
pF
sov|
ae
1A
Co7
0660151
150
pF
|
2B
Cos
0660151
150
pF
50V
2A
Cos
0510101
100
uF
6.3V
28
C10
0510101
100
uF
63V\
06
2A
cu
0519103
0.47
uF
50V(
~~
2B
Ci2
0519103
0.47
pF
50V
2A
es
sce
2SC1000
2801313
28C1222
ee
Parts No. Stock No.
Ci3 0600107
C4 0600107
C15 0600276
C16 0600276
Rol 0107563
Ro2 0107563
Ro3 0107222
Ro4 0107222
Ros 0107104
R06 0107104
Ro7 0107821
Ros 0107821
Rog 0107224
R10 0107224
Ru 0107472
Ri2 0107472
R13 0107271
R14 0107271
R15 0107394
R16 0107394
R17 0107273
R18 0107273
Rig 0107104
R20 0107104
R21 0107681
R22 0107681
0.01 pF
0.01 uF
0.0027 uF
0.0027 uF
Description
ae Ne er ee a ee
§6kQ) |
§6kO,
2.2kO
2.2k0,
100k
100kQ
8200
8200
220k.
220k
4.7kO,
4.7kO
2700,
2700
390kO.
390kO,
27kQD
27k O
100kQ
100kQ
6800
6800.
+5% S5O0V MC.
+5% YwW CR.
Position
1B
1A
1B
1A
1B
1A
1B
1A
2B
2A
1B
1A
2B
2A
28
2A
2B
2A
1B
1A
1B
1A
28
2A
2B
2A
i
16

6-4. F-1505 Filter Circuit Board
(Stock No. 7591910 Complete Circuit Board F-1505)
Conductor Side
Parts List
Parts No. Stock No.
Description
Co1 0600277 0.027 4F
Co2 0600277 0.027 uF -
+ 50V M.C.
Co3 0600187 0.018 uF 5%
Co4 0600187 0.018 uF
Roi 0107332 3.3kQ
Ro2 0107332 3.3kO
Ro3 0107473 47kQ
Ro4 0107473 4ATKO
Ros 0107824 820k
5 7 YVw CR,
Roé 0107824 820k 5%
Ro7 0107104 100kO
Ros 0107104 100k,
Rog 0107472 4.7kQO
Rio 0107472 47k
$05
$06 1130790 Push Switch (3 Stage)
$07
6-5. F-1490 De-emphasis Circuit Board
(Stock No. 7591890 Complete Circuit Board F-1490)
Conductor Side |
Parts List
Parts No. Stock No.
Description
Col 0600826 0.0082 uF
+5% 50V MC.
Co2 0600826 See fe
$12 1110240 Slide Switch
17
6-6. F-1499A Driver Circuit Board
(Stock No. 7570800 Complete Circuit Board F-1499A)
Parts List
Parts No. Stock No. Description Position .
TRo1 0300303,5 2SA640(K,L) 28
TRo2 0300303,5 2SA640 (K, L) 2A
TRo3 0300303,5 2SA640 (K,L) 2B
TRo4 0300303,5 2SA640 (K,L) 2A
TRos 0305901 28C1124(2) 1B
TRos 0305901 2$C1124 (2) Transistor 1A
TRo7 0305121,2 2SC281 (B,C) 1B
TRos 0305121,2 2SC281 (B,C) 1A
TRog 0305901,2 2SC1124 (2, 3) 2B
TRIo- =0305901,2 + 28C1124 (2, 3) 2A
TRi 0300390,1 2S5A706 @ (1, 2) 2B
TRi2 0300390,1 2SA706 @ (1, 2) 2A
Doi
0340090
DS-430
1B
Doz 0340090 DS-430 1A
Diode
Dos 0340090 DS-430 1B
Dos 0340090 DS-430 1A
ZDo1 0316220 RD-8.2E al ; 1B
Diod
7Do2 «0316220 ~—«RD-8.2E (B)f Zener Plos 1A
Con 0519103 seed 2B
50V_ E.C.
Co2 0519103 0.47 uF 2A
Cos 0660150 1 50pF 2B
50V C.C.
Co4 0660150 1 os 2A
Cos 0511221 220uF 28
VEC.
Cos 0511221 220 a 2 2A
Coz 0660100 10pF 1B
+509 VG,
Cos 0660100 peal 50% 50 1A
Cos 0515330 33 uF 1B
E.C.
Cio 0515330 ae aa 1A
Ci 0660100 1 OpF 1B
2G:
C12 0660100 i SO OK
Ci3 0515101 100 uF 2B
C4 0515101 ae SOM: JE ok
Ci7 0757473 0.047 uF 2B
Cig 0757473 soe PE? ah
Roi 0107104 100kQ 2B
Ro2 0107104 100kQ, 2A
Ro3 0107222 2.2k0, 28
Ro4 0107222 2.2k0, 2A
Ros 0107104 100kQ, 1B
Ros 0107104 100kQ, 1A
Ro7 0107223 22k, 1B
Ros 0107223 22k, 1A
Ros 0107683 68kQ, 1B
Rio 0107683 68k, 1A
Ru 0107103 10k 1B
Ri2 0107103 1OkQA/+5% WW CR. IA
Ri3 0107100 100 1B
Ri4 0107100 100 1A
Ris 0107100 102 . 1B
R16 0107100 100 TA
Ri7 0107152 1.5kO, 1B
R18 0107152 1.5kO, 1A
Ris 0107082 6.8kO, 1B
R20 0107082 6.8k2 1A
R21 0107104 100kQ, 1B
R22 0107104 100k 1A

Sansut.
Conductor Side
SANSUI
2SA706
Parts No. Stock No. Description Position 2SA640 _ 2801124 280281
~ R23 0107103 10kQ 1,2B
R24 0107103 10kQ 1,2A
R25 0107471 4700, 2B
R26 0107471 4700 2A
R27 0107182 1.8kO 1B 3
R28 0107182 1.8kQ 1A EC
R29 0107472 4.7kQ 1B
R30 0107472 4.7kQO 1A
R31 _ 0107392 390, 1B
R32 0107392 390, 1A
R33 0107332 3.3k0, 1B perso RDS-2E(B)
R34 0107332 3.3k 0 1A
R35 0107152 1.5kQ 1B
R36 0107152 1.5k QO +5% YW CR. 1A
R37 0107151 1500 2B
R38 0107151 1500 2A
R39 0107100 100 2B
R40 0107100 100 2A
R41 0107479 4.70) 2B
R42 0107479 4.70 2A
R43 0107221 2200, 2B
R44 0107221 2200 2A
R45 0107479 4.70, 2B
R46 0107479 4.70 2A
R49 0107479 4.70 28
R50 0107479 4.70 2A
R51
0107221
2200
2B
=—Abbreviations——
Rs2
cel
cc
a
C.R.
:
Carbon
Resistor
BP.E.C.:
Bi-Pola
Electrolytic
S.R. : Solid Resistor Capacitor ;
V
Rol
1033091
5kQ.
(B)
1B
Ce.R.
:
Cement
Resistor
C.c.
:
Ceramic
Capacior
VRoz
1033091
=
5k.
(B)
|
semi-Variable
Resistor
|
A
M.R.
:
Metallized
Film
Mi.c.
:
Mica
Capacitor
V
Ros
1033051
1kQ,
(B)
18
Resistor
0.C.'
:
Oil
Capacitor
;
VRo
1033051
1kQ,
(B)
1A
M.C.
:
Mylar
Capacitor
P.C.
:
Polystyrene
Cazacitor
pe TT
E.C.
:
Electrolytic
Capacitor
T.C.
Tantalum
Capaé
tor

6-7. F-1500C Power Circuit Board (stock No. 7591950 Complete Circuit Board F-1500C)
Conductor Side
Parts List
Parts No. Stock No. Description Position Parts No. Stock No. Description Position
TRo1 0306150~2 2SC1402 (R, O, Y) Le Co1 0659011 0.01 uF 500V C.C. 2C
TRo2 0306150~2 2SC1402 (R, O, Y) 1A Co2 0549103 1000 uF 50V 2A,8
TRo3 0306150~2 2SC1402 (R, O, Y) 1B Co3 0515221 220 uF 50V 2A
TRo4 0306150~2 25C1402 (R, O, Y) 1B Coa 0515470 47 [UF 50V 2A
TRos 0305981,2 2SC875 (E, F) Transistor 9 4 Cos 0513101 100 uF 25V 2A
TRoé 0303861,2 2SD330 (D, E) 2A Coé 0512101 100 uF 16V5SE.C. 2A
TRo7 0306131,2 25C1364 (6,7) 2A,B Co7 0515470 47 pF 50V 2B
TRos 0306131,2 2S8C1364 (6, 7) 2A, B Cos 0510221 220 uF 6.3V 2B
Cos 0515109 1 UF 50V 2A
Doi 0310680 = 10DC-1 2B C10 0535109 1 uF 50V 2A
Do2 0310680 10DC-1 2B Ci 0530470 47 LF 6.3V BP.E.C. 2A
Dos 0310670 10DC-1R 2c C12 0601108 0.1 uF 2A
Dos 0310670‘ 10DC-IR 2C C3 0601108 0.1 a Se OZ: BOY MES in
Dos 0310340 10D-1 2B Cu 0657473 0.047 uF ae cc. 24
Dos 0310340 10D-1 2B C15 0657473 0.047 uF 50VJ ~ ZA
Doz 0310340 10D-1 Diode 28
Dos 0310340 10D-1 2A Roi 0183221 2200, 3W Ce.R. 2A
Dos 0310400 =1N34A 2A Ro2 0107122 1.2kQ, 2A
Dio 0310400 1N34A 2A Ros 0107332 3.3kQ, 2A
Di 0310400 1N34A 2A Ros . pa 1.2kQ, zh
Ros 3.3kO 2
Di2 0310400 IN34A 2A 0 Rae ON ts % MW CR OF
ZDo1 0315310 RDI3A(N) 2A Ro7 = a 82kQ 2B
ZDo2 0315480 —- RD35A(L) enerDiede 2A Ros 22kQ 2A
Ros 0107473 47kQ, } 2A