Sanyo F-8501 User manual

SANYO
11-Transistor, FM/AM-band Car Radio
MODEL F-85071
SERVICE MANUAL
SANYO ELECTRIC CO., LTD.
INTERNATIONAL DIVISION : SANYO ELECTRIC TRADING CO., LTD.
OSAKA, JAPAN.
SPECIFICATIONS
CIRCUIT SYSTEM .-..---. 11 transistors plus 8 diodes superhetero-
dyne with RF amplification, manual
tuning and push-button tuning.
FM SECTION
FREQUEN RIANGE <qcticcsoasssorncncseiennenesnesrtanrensinad
INTERMEDIATE FREQUENCY -++-+s-sessesesseeseeseeesseseeses
OUTPUT POWER -.----- Undistorted 4.0W (12V) 2.0W (6V)
SENSITIVITY -++--++e++++ 10 #V/m (for 500mW output with S/N
30dB)
SIGNAL TO NOISE RATIO.-----40dB (at 25 »V/m signal input)
PIDELT TY xssssiesisinasinionenisioniaisiew neni swiiesamaainer/seass nemslereeu x 100c/s -2dB
400c/s OdB .
6000c/s -13dB
AM SECTION
FREQUENCY RANGE) \s0.tincisscsanestssdsnneyananes 530-1,605 Ke
INTERMEDIATE FREQUENCY dasedenescsccnersceerccecesccceccoes 455 Ke
OUTPUT. POWER --------- Undistorted 4.0W (12V) 2.0W (6V)
Maximum — 6.0W (12V) 3.0W (6V)
SENSITIVITY -seeeesereeeeeeeeeeeees 13 »V/m (for 500mW output)
SIGNAL TO NOISE RATIO.---23dB (at 10Kc off tuning from 1000Kc)
FIDELITY) wcesercnss consi cssypenaricedencnnieesepensneccenracess 100c/s -2dB
400c/s OdB
4000c/s -12dB
POWER SUPPLY -+++seeeeeeeeeeees 12V and 6V (Reversatbe polarity)
CONSTRUCTIONS
STANDAPD ACCESSORIES
yoeeeng Items Ratings Q'ty
“y Noise suppressor resistor R-R7006 5
2 Noise suppressor capacitor R-C4005 2
3 Spare fuse R-S1246 1
4 Mounting metal (Perforated) R-111685 1
5 Oval speaker with box Optional 1
CURRENT DRAIN ------++ Nosignal 350mA(12V) 350mA(6V)
Maximum 1300mA (12V) 1500mA(6V)
LOUDSPEAKER. «-v-eeeesccescecessececeeeees 5Y <7" permanent dynamic
Voice coil impedance 4 ohms
TRANSISTORS -----eeee++- 2SA440 FM RF Amp.
2SA440 FM Converter
2SA322 AM RF Amp.
2SA324 FM IF Amp. & AM Converter
28A324 FM IF Amp. & AM IF Amp.
2SA324 FM IF Amp.
2SA324 FM IF Amp.
2SB186 Audio Amp.
2SB186 Audio Driver
2SB217 x2 Power Amp. (pushpull)
DIODES. «:s+0ceccssrccccccssrees 1S994Y FM Regulatcr
181882 FM AM AGC
181882 FM Discriminator
18188 x2 FM Limiter
1$188 AM. Detector
THERMISTORS «eeeeeeeeees SDT-02 Temperature compensator
DIMENSIONS. -cvcccccscccscsscccccsccceesseescensens Width ‘178 mm 7")
Height 51 mm (2”)
Depth 157 mm (614”)
SHAFT SPACING::------- 130mm (Distance between control shafts)
WEIGHT.
scessesncensscvisevecciveiescssnescence
Radio
unit
2.0k8
(4.4
Ibs.)
Speaker unit 0.8k8 (1.8 lbs.)

POLARITY REVERSE
The polarity reversing plug must be positioned correctly before
installing your radio or making any electrical connections to the
radio.
Set the polarity plug to the positive noneen if the positive
terminal of the battery is grounded to the car.
Set the polarity plug to the negative position if the negative
terminal is grounded to the car.
Damage to the radio may result if polarity plug is not posi-
tioned correctly before operating.
ALIGNMENT PROCEDURES
A) AM SECTION
@) ANTENNA TRIMMER ADJUSTMENT
With radio installed in car and auto antenna fully extended,
tune in a weak station near 1400Kc and adjust CT-3 for maxi-
mum output. (Fig. 1)
While this adjustment, one of AM push-buttons must be push-
ed in for AM operation.
© @
q QL
Trimmer CT3 Antenna lead
Fig. 1
6b) ALIGNMENT PREPARATIONS
Check power supply voltage (13.2V) and ground polarity.
Signal generator output: Modulation frequency 400cps Per-
centage modulation 30%
Signal level just high enough to
provide meter deflection.
Signal supply inlet: Antenna receptacle through the
dummy.
Output meter connection: Across the speaker or dummy load
(4 ohms).
SIGNAL
GENERATOR
COUPLING
IF ALIGNMENT
SIGNAL RADIO
GENERATOR DIAL
FREQUENCY SETTING
ADJUST FOR
MAXIMUM
OUTPUT
Low frequ-| IF transformer
ency end Ti, L12, FIs;
stop T14
Thru dummy
1. to antenna
receptacle.
RF ALIGNMENT
Oscillator coil
T10
Oscillator tri-
mmer CT5
Antenna trimmer
1400Kc |CT3
RF trimmer CT4
Thru dummy 600Kc 600Kc
to antenna
receptacle.
1400Kc 1400Kc
1400Kc
2,3 and 4.
*Repeat steps 1,
NOTE: Alignment is usually to be taken at points of 600Kc
and 1400Kc, but it may be possible to obtain 530Kc
to 1605Kc tuning range by adjusting at both lower
and upper end of receiving band.
ALIGNMENT CONNECTION
ee
STANDARD Het auto FN
SIGNAL 60pF V
GENERATOR] pam Se as
Dummy
.B) FM SECTION
@) CURRENT ADJUSTING OF RF STAGE
- Adjust the VRI1 (100k) for the collector current of Trl
(28A440) to be 750pA.
6) FM IF ALIGNMENT oS vsing a sweep marker
generator)
HOW TO | Elements
step | Generator) DIAL | CONNECT | to be ELEMENTS
eee S. M. G.__| Adjusted
Point Output ter- Tl Adjust for maxi-
of ne minal to hn mum gain and sym-
1 10.7Mc inter antenna. Ts. metric response
_,| Input ter- curve as shown in
ference | —. : .
minal to Fig. 3 with marker
points Tpl on the top center.
and Tp2.
3 Output ter-| 9 Adjust T9 to get.
minal to crossover curves
2 10.7Mc antenna., having striaghtness
Input ter- and to orient the
minal to marker at crossing
points of Point (Fi8. 4)
Tpl and R29
c) #M RF ALIGNMENT
Connect FM signal generator thru the dummy (Fig. 5) to
antenna receptacle.
GENERATOR | . DIAL
FREQUENCY
SETTING
REMARKS
STEP
Adjust CT2 for maximum
gain.
Lowest
Adjust CT1 for maximmm
gain.
‘5 Confirm overall tuning range to be
from 87Mc to 108Mc.
Repeat steps 1 thru 5 until no further improvement
can be made.

INNER PARTS LOCATION
Ant.
)
CT-3
Trl 2SA440
Tr-2 2SA440
Tr-3 2SA324
Tr-4s 25A324
Tr-5 2SA324 Tr-6 2SA322
Tr7 2SA324
Tr8 2SB186
Tr-9 2SB186
Tr-lOl)
50 (499)
3 +
“100° 892 0
Us
2SB217
DI 18994 D2 3,4,6,7,5
45188
PARTS LOCATION
FM __RF_ trimmer
FM_ISt_ IFT
FM OSC: trimmer
cm
«lt
kote
of}
Ke
7
AM
RFE
a
ay
Fs
trimmer
CD,
aug, Sania “ te) a] |.
AM
Osc,
5
i
h
Seek
trimmer ©. SoG R36
R42
(a
R.
AM
OSC.
Ic54}C53
coil
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NY
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Rid
R
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BS
PS
C35
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FM_5th
IFT
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39
12
13
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ra
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R24
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cal
ot
o
C34
Si
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on
FM
_2nd_
IFT
FM_
3rd
IFT
EM
ath
IFT
ea
C24
0
Ti2
Ori2
AM
_Ist_
IFT
AM_2nd_IFT
.
D8
15188
Trl
28A440
Tr-2
2SA440
Tre3
28A324
Tre
08A304
A
eee
ae
R58
Q
DS 18188 pas he C3216
Tr6 2SA322 i
7 R35
Trl0,11 2SB217
MEASUREMENT DATA OF VOLTAGE AND CURRENT
Supply voltage: 1.2
Tit %SAS40 Ve OV Ted 2SA374 Ve OV Td WAM24 Ve OW | Ve Ov |
Vb 3.2V Vb 4.4v vb 42 ley Vb SIV Lan
Ve 3.6V Ve 4.7¥ Ve 46v | Ve 5.4V |
le
BOOKA
Ie
Tela
te
mal
Je
4504,
@
12
WAKO
Ve
0.2V
TiS
WAI
Ve
UV
Tr 258186
Ve
ZV
Vb 2.4v Vb 4.4v Vb 45V
Ve 2.6V Ve 4.8V Me 5.2v
te 640,04 fe, lin 500A
Ted 258324 Ve OV W6 %a322 Ve 0.7 TP 258186 Ve Ov
Vb
av
Vb
4.2v
Vb av
0009
Ve
SV
Ve
5.5¥
Ve
5.2V
le
750p8
le
G5
0yta
le
6.5mA
Tel[phone] Ve Ov
Tell 288217 Vb 12.9V
Ve IV
le 20mA,
iS)
© Earth ® Eadh

PARTS LIST.
SYMBOL No. | STOCK No. DESCRIPTION Qty
Mechanical Parts
R-261123 | Heat sink -for power transistor 1
R-28096 | Nose panel 1
R-38084 | Dial plate 1
R-261124 | Dial press 1
R-S81035 | Trim plate Hi
R-112346 | Back screen 1
R-112341 | pointer 1
R-39139a | Knob 2
R-39140 | Knob 2
R-47968 | Spec. sheet 1
R-12277 | Spring -Electro cap-holder 3
Insulating sheet —-fiber 3
R-24949 | Sleeve -tuner shaft spacer 1
R-112347| Angle -trimmer mtg. 1
R-112348] Angle -printed board mtg. 2
R-112239 | Lead clamp —antenna lead 1
Electrical Parts
L7, L12
L4, L5
T10
Til
TAZ
T13
714
Tl
T2
Tr.
T4, T6
TS), TZ
T8
T9
Leh, Ee
cTi, CT2
CT4
CT5
VR2,VR3
T15
T16
L13
C65.66.68,
VRI
CT3
R-S6324
R-S81106
R-W1015a
R-w9002
R-W8145
R-W5T151
R-W5T152
R-W5T153
R-W5T154
R-W5T076
R-W5T126
R-W5T198
R-W5T195
R-W5T196
R-W5T197
R-W5T087
R-W2228
R-C0049
R-CO0029d
R-CO028d
R-R124137
R-W6268
R-W6266
R-W6264
R-C7003
R-R11011
R-CO038a
R-S4290
R-S3006
R-S3138a
R-S3139a
R-S2116a
R-S1207
R-S2140
R-S1102
R-S2098
R-S1204
Speaker -5”x 7” 4 ohm P.D.S.
Tuner assembly
Choke coil 64H
VHF Choke coil 1#H
Oscillator coil -AM
AM IF transformer Ist stageprim.
” 1st stage second.
un 2nd stage prim.
u" 2nd stage second.
FM IF transformer Ist stage
77 2nd 7 prim.
“a 2nd +7 second.
7 3rd & 4th stage prim.
u 3rd & 4th stage second.
FM IF transformer Discrim prim.
u Discrim second.
FM antenna coil
Trimmer 1OpF -FM RF. Conv.
Trimmer 65pF -AM RF
Trimmer 50pF —AM Conv.
Volume & tone control with switch
Input transformer 300:130 ohm
Output transformer 15/50:4 ohm
Choke coil 2 mH
Spark capacitor
Semifixed resistor 100K ohm
Trimmer 5O0pF -AM antenna
Slide switch-source voltageselect
Lug plate
Speaker lead -for radio
a” -for speaker
Antenna receptacle
Pilot lamp
Pilot socket _
Polarity reverse plug
Polarity reverse socket
Fuse holder
RPP rP RP RP RP BPP RP PRP RP WRF PRP RP RP PEP NORFPRPYPNONRPRP PRP RP RP RP HYNON EF FB
SYMBOL No.| STCCK No. DESCRIPTION Q’ty
Electrolytic capacitors
Ci he *| Recsaeo 10pF 10WV 5
C55 R-C9116 0.5 uF 10WV 1
C58,C60 | R-C9145 100puF 10WV 2
C77 R-C9146 200yF 10WV r
C13.61.62| R-C9127a 500 uF 15WV 3
Fixed resistor
R1 Carbon film 2700hm +10% %W
R2 a” 1.2K 7 ” a”
R3 Solid 360» + 5% %w
R4 ” 120 » +10% v
R5 Carbon film 18K ~ + 5% %W
R6 4 2.7K 7 a” a
R7 uw A7K « ” ”
R8 ” 5.6K ~ +10% 4
RQ u” 100 ~ u” uw
R10 au 18K 7 a” ”
R11 ” 220 » Z “a
R12 ” 150K 4 a
R1i3 77 15K Za uw
R14 ” 15K »~ u 7
R15 7 1K » uw” 7
R16 7 100 »~ ” ”
R17 ” 10K » uw u”
R18 u 330 v a u
R19 ” 18K » ” u”
R20 ” 47K v nw uv
R21 ” 1K v uw uw
R22 yp A7OK »v ” 7
R23 u 100 »~ u” uw"
R24 u” 18K 7 u” 7
R25 uw ATK ” u
R26 ” lK v~ uw u
R27 y 270 « uw ”
R28 au 270 » “a a”
R29 a 180 ” ”
R30 un 1K v a 7
R31 7 IK »# uw uv
R32 ” 5.6K v7 uw ”
R33’ Pe 5.6K 7 ” ”
R34 uw 5.6K 7 Ww aw
R35 ” 10K » a” u”
R36 a” 560 » n 7
R37 ” 150K » “uo "
R38 u" 1K v ” 7
R39 ” 39K ~ ” ”
R40 ” 3.9K 7 77 ”
R41 uw 1K v a” a"
R42 Ws 15K a” a”
R43 ” 180K ~ uv a
R44 ” 22K 7 7 ”
R45 u” LK » uw a
R46 u 47K « uw “a
SYMBOL No.| STOCK No. DESCRIPTION
R47 Carbon film 15Kohm +10% %W
R48 u 47 4 y a
R49 a 200 » u a
R50 Solid 1K u YW
R51 ” 820 » ” ne
R52 7 22 7 u uw
R53 R-R7028 Wire Wound 0.7 ~ uw 1W
R54 Carbon film 560 ~ a YW
R55 u 68 4 u uw
R56. u 100K ~ ” uw
R57 R-R7030 Flexible 28 7 u AW
R58 Carbon film 3.3K~ " YAW
R59 7 56 7 ” ”
R60 u 1K » ” un
R61 ” 220 ” ”
R62 7 33 7 uw uw
Transistor
Tr1-2 2SA440 -FM RF. Conv. 2
Tr3-5 2SA324 -FM IF. AM IF. 3
Tr6 2SA322 -AM RF. 1
Tr7 2SA324 -FM IF AM conv. ui
Tr8-9 2SB186 -AF Amp. Driv. 2
Tr10-11 2SB217A -Power Amp. 2
Thermistor
Thl SDT-02 -temp. comp iL
Diode
D1 1S994Y -FM regulated aL
D2.5.8. 1S188 -FM AGC limiter 3
D3-4 1$188 -AM ACC Det. 2
D6-7 1S188 -FM Discrim. (pair) 2
Fixed capacitors
Cl Ceramic 15 pF +10% 25WV Square
c2 Z 20 ZZ a u Disc
c3 “” 500 ~ +20% 50WV Square‘
c4 ” 0.01 pF +80—20% 25WV Disc
C5 au 10 pF +10% 500WV ”
C6 ” 270 4 +20% 25WV “a
C7 uw 2 > -- 0:5" pF ” Square
cs au 25 a +310% ” Disc
cg n 3 ~” +0.5pF u Square
c10 a 0.001 pF +80—20% » Disc
Cll a 15 pF +10% 500WV
C12 u 50 » u 50WV Square
C15 7 0.01 pF +80—20% 25WV Disc
C16 7 0.01 » 77 7 ”
C17 uw 10 pF +1pF “u Square
C18 uw 7 4 +0.5pF “u “
C19 a” 0.01 »F +80—20% »v Disc
C20 aw 2 F +0.5pF au Square
C21 “a 0.04 pF +80—20% v~ Disc
C22 ” 3) pF =+0.5 pF a Square
SYMBOL No. DESCRIPTION
C23 Ceramic 13 pF +10% 25WV Square
C24 uw 10 4 +10% a ”
C25 ” 0.04 uF +80—20% ~~ Disc
C26 ” 100p pF +10% 50WV Insulated
C27 u 0.04 uF +80—20% 25WV Disc
C28 ” 7 pF +0.5pF a Square
C29 ” 15 « ” ” a
C30 ” 0,04 pF +80—20% 7 Disc
C31 wu 0.01 ” 774 ”
C32 a 16 pF +10% ” Square
C33 » 001 pF +80—-20% ~~ Disc
C34 u 1.5 pF +0.5pF ” Square
C35 » 001 pF +80—20% ~ Disc
C36 a 13. pF +10% ” Square
C37 » 0.01 pF +80-20% +» Disc
C38 yn 25 pF +10% 50WV Square
C39
Mylar
0.01
pF
+30—20%
»
a”
C40 7 0.02 ~~ “” 7 “u”
c42 Ceramic 200 pF +20% ” Disc
C43 77 200 77 77 fhe.
c45 ” 350 4 +5% ” Square
C46 ” 0.01 pF +80—20% 25WV Disc
C47 Mylar .0.01 ~ +30—20% 50WV Square
c48 Ceramic 0.04 » +80—20% 25WV Disc
C49 ” 120 pF +10% 50WV Insulated
C50 Mylar 0.01 pF +30—20% ~~ Square
C51 Ceramic 0.01 7 +80—20% 25WV Disc
C52 Mylar 0.005 ~ +30—20% 50WV Square
C53 u 0.001 » ” a a
C54 Styrol 100 pF +108 125WV Tubular
C56 Ceramic 100 ~ uv ' 5OWV Insulated
C63 Mylar 0.01 pF +30—20% 7 Square
C64
”
0.01
«v
uy
”
u
C67 M.P. 0.5 4 +20% 150WV Tubula
C69 Ceramic 0.04 7 +80—20% 25WV Disc
C70
4
0.01
un
a”
uv
C71
aw
0.01
a
a” uw
uv
C72
u
0.01
a"
” ”
C73 u 0.001 u ” u
C74 Ceramic 0.04 ywF +80—20% 25WV Disc
C75 Mylar 0.01 + +30—20% SOWV Square
C76
Le
0.005
uw
a
aw
Ww
6—20054 Printed in Japan