Pioneer SX-82 User manual

I
SERVICE TVIANUAL
AM IFM MULTIPIEX RECEIVER
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pINNEER ELEGTRNNIG GNRFNRAjTINil
TOKYO JAPAN
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CONTENTS
I SCHEMATIC DIAGRAM
2 LAYOUT
3 BLOCK DIAGRAM
4, ALIGNMENT INSTRUCTIONS
5. DIAL CORD STRINGING
6 PARTS LIST
, 7, TROUBLE SHOOTING

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RATIO DISCRI
FM
ANTENNA
3000
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ANTENNA
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l15/23OV 50^60cps

ATIGNMENT INSTRUCTION
Please read these Instructions with extreme care before
attempting alignment.
+ Test Equipment
1) Stand-ard- Signal Generator 2) VTVI,{" DC, AC 1) Aud-io Oscillator
4) Oscilloscope 5) fl,[ Multiplex Generator
+ Attention on Alignment
1 ) Signal Generator Input: 1n every case , use the minimum
generator input that will- obtain a satisfactory output ind-ication.
2) \Mhen connectlng the test equipment to the input, use the shield-ed
wire as short as possible"
+ VTVI\/I and Oscilloscope should- be connected. in parallel at the output.
+ Alignrnent of 4lll Secti_on
+ Note: Posi-tion of Switch; SEIECTOR AIVI
MODE STEREO NOR]VTAL
Position of Volume Control; I\II1IIIMUM
p
-B)
I Signal Generat
cmutoc I
LJ rl:tr *.1 I ------ C oupl lng
Pin 1 of V-
L2
( 6ra6 )
a ',
,l;
\ -.
W
then ad-just to €
to BROAD, ad-just
SHARP position.
Pin 7
(5m6)
of Vrn
:1
;or fnpu
Freq.
455kc
rst set
;et a cu:
to fig
455 kc
L
tJ
;---'
Mod-u
l_
I
| 1kc
I tV"
the t
rve si
" 1-B"
lkc
1q"
Dial
setting
Point of
no inter-
ference as
near as
515 kc
*"d *idth =
milar to f1
From step 4
il
Connect
VTVM
-
Audr-o
output
12'
elector F
9,1-A , el
, (sl-e)
il
T,-, r-
a" tJ
top and-
bottom
Al ignment
-
Ad-just lRemarks
Ad-just to
ge t IIT"AX "
Ceflection
witch (sl-e) to SHARF,
ter that set the (Si,-A
should be set at
Tt-l
top and
bottom
lAntenna termina
, I through dummy
+ I (o.t uF)
,4
b,OU .[cc il 500 kc nL1l'L12
and T-
)
??
n
51400 kc
5 ,-r-
" I1400kc I "
rl
!l
:l
il
i1
L no further irnlrovement i
CT- , CT,
)+
iand CT-
t)
-s -possib Le

\
Noter 1) Posltion of Switchr SELECTOR FM
AFC OFF
2) Position of Volume Controlc IVIINI1vIUM
1) Connect VTVIVi and. Oscil-loscope in parallel at STEpS 9, 10"
I
I
STEPS SLgRal. Generator Input _
Coupl ing I Frequency ii\,lod_u. Dial
Setting Connect
VTVl\{ ". . Alignment
Adjum
IPin I
1/
'l'4
( 5ra6 )
of
:5':
10"7 mc
100 d.b None Point of
no inter-
ference as
near as
BB mc
DC VTV]!,T
to Pin 5
of TA
-T ',5'.
Top of
T
-4 Ad-just to get
zero volts
(between pos"
and- neg"
read.ing)
2il 10,{ mc
100 d.b il il il Bottom
of T.
/t
-f
Ad-just to get
Maximu:n
def lection
1
4
ll
*t""t t
I 11mc
I roo d-b
I
I
IEPS 1, 2
l"
I
r,nd- 1
il
everal tim
It
Uto get
Lil
I
a st_mt-Ia
Ad-just to get
Maximu-m
d.efl-ection
(Neg. read-ing) _
curve as Fig.2
5
Pin I
v__
L)
(eru5)
of
tri:
10" 7
100 mc
mc il il
DC VTVI\I
to Pin 2
of T-
tibl
Top and-
bottom
of T-
)
Ad.just to get
Maximum
d.ef lection
(N"g, read.ing)
6Pin 1 of
oLz
( 5ra5 ),1
10.7 mc
70 db il il il Top and
bottom
of T^
')
L-CL
t?
t-7
IFin 7
vtt
( 5nqe )
of
''.9
10"7 mc
60 d.b
il il lt Top and-
bottom
of T-
L-a
ll
BRepeat STIEPS 5, 5 and- 7 several time to get ?" simil ar crrr\ro 2s ficn 4
9FM antenna
terrninal 90 mc
20 db lkc
toTi 90 mc AC VTWI
to aud.io
output - .
/ nt
tl)
Lr' "j
&L,
o
Ad-just to get
Maximirm
d.ef lection
10 il 105 mc
20 d_b It f05 mc il
nm
ttr'
cr^ &
I
nm ll
11 Repeat STEPS 9 and_ 10 mtil no furth l-mprovemen
er provement 1s possible

Noter 1)
2)
1)
4)
5)
Position of Switchc SELECTCR FM IPX
il- AFC OFF
Position of Vohl_nre Controls IviINIl,[Uftl
(main volume control)
couple VTVM and- Osciltoscope in paratlel so as to observe
ripples simrrltaneously "
At Step 5, I megohm is ind"ispensable in coupling VTVTvI to
pin 4 of T.,Cj in series.
5) At steps 6 and- 7 , apply the composite signal to Flli antenna
terminal and- measurerrent must be mad-e on each right and- left
channel separately"
STEPS Clrcuit to
be ad-justed. _ Signal Generatol _lqpgj--_
Input
Signal
C oupling lilod-u" Connect
VT\|M _ . Aflgnment __
Ad-just i Remarks
11B 1- ^
-f! U
Separation
Coil
Aud-io
Oscillator
to Y-.
, "'1,
18 kc
2OO mv
( rros )None
to junc
tion
Ccno &
T_^^
L^( )')
Bottom
OI
't _ __
'ho I
Ad"just to get
l/lax" d-eflectio
Position of
VR-n-r:
)w!.
lVlinimuin
25l kc
Trap Coil il .^r- ..
,l\l ,
'.t'
6l kc
lOO mv
(rms)
ll n
" 5tl .ri.
tA-,
', )'
Bottom
of
" 'o,
Ad-just to get
Min. def lectio
Position of
VR-^. 3
)UI
n/iaximu-m
318 kc
Trap Coil il
-1\ /t
' ..+
1B kc
10v ?t '..rg
Bottom
of
L_^_
,ur
Ad-just to get
l.,{ininiu-rn
d-ef lection
Lil
il
.b,' il il c_ _
L-'-) I
)Lr
Bottom
OI
L-^
ta4
il
)Sub Carrier
Circuit
I\rlultiPlex
Generator
to Fli
Ant enna
terininal
bO db o1'
L9 kc
Pilot
signal ra"k
Pin 4
OI
rtt
'joj fT;r
fllot
- EO2
ry)"-
- 501
Ad.just to get
Max" d-eflectio
fron Tq.,< to 5
)w)
and 501 revers
repeating seve
times
6Pilot
phase It
50 d.b
Composite
Signal
each
channe I
19 kc
Pilot
lO"/" &
Sub &
iviain- ^.';
J-KC )O"/o
ar
" jzL
X-' or
r ".\;
:!
'{r '
' *t,
T
- 501
Ad-just to get
iWax. output an
l'fin, d-istortio
Confirm each
channel
7
B
9
Separation
Control
Repeat STI
"--
LJ UUJ- UU
ind-i-cator
light
t?
6 and 7
9l
Tre
it
several t
1A d.b
I O lrn
pilo t
il
MAO
L9 kc
I ( \u/^
il trp
"'5c1
un5ot
Ad-just -i;o get
I',{in. outpu-t of
reverse channe
Confirn each
channel
Ad-just to glow
1{t501 when 19
Filot signal i
n
a)I
ol rr
ral
d"
Yrt
t,
kc
S
signa,l :appliecl

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o
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trJ
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FREQ. DEVIATION
IN MEGACYCLES
Fis .2
FREQ. IN MEGACYCLES
CHARACTERISTC
Fig,3
A(SHRP)
-l"J I
' KC'FM sELEcrlvlrY
455
FREQ. DEVIATION
IN KILOCYCLES
Fig,l
DIAL CORD STRINGING
I START
9 END
CONNECT ONE END OF DIAL CORD
TO SPRING AS SHOWN
BELOW STRING AS INDICATED
BY ARROW KEEP A MODERATE
AMOUNT OF TENSION ON CORD
THROUGHOUT STRINGING PROCEDURE
TIE END TO SPRING
DR IVE SHAF T
4
3 TURNS
D-5
PO I NTER

PAETS LIST OF SX-82
CAPAC ]TORS
fn uF , IV" tolerance for all f ixed- capaci-tors,
unless otherwise noted." p = lluF
Synbol
cL e2
C1 ,4
C5 ,5
C7,B
C9,10
c1l,12
cl1,r4
c15,18
c15 r 77 ,79 ,2O ,
2I,22
c21 ,24
c25 ,26
c27 ,28
c29
c50
ClL
c52
c11 ,54
c15 ,16
C37 ,18
c19 ,40
C4I ,42
c41 ,44 ,45 ,45
c47
C4B
c49
c50
c51
c52
c51 ,54
c55
c55
c57
c5e,59
c50
c51
c52
c61 ,64
c65
c56
c57
C5B
c6g
c70
c7t
c72
c75 ,7 4,75
c76
c77
C7B
c7g
CBO
CBl
Description
Mica
Mica
0i1 paper
Mica
Electrolytic
Mylar
0i1 paper
Cerami-c
Vacant
0i1 paper
lVlica
0i1 paper
Mica
0i1 paper
Mlca
0i1 paper
0i1 paper
0i1 paper
Electrolytic
Electrolytic
Ceramic
lVlylar
Ceramic
Cerami-c
Ceramic
0i1 paper
Ceramio
Cerami-c
Ceramic
Cerami-c
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Mica
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Mi-ca
Cerami-c
Vacant
0i1 paper
Ceramic
Ceramic
Ceramic
Cerami-c
0i1 paper
Ceramic
5oop
]OOp
0. 02
llOOp
20
0.1
0. 02
5op
0. 05
2OOp
0,05
lOOp
0"01
lOOp
0"01
o.o2
0"005
10
7
)
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ruup
1op
0"005
0. 05
0"0c5
0"001
0"005
lop
2p
1op
0. 002
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0.01
5op
1OOp
0"01_
5op
0. 01
0. 005
2OOp
ICOOp
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1op
45op
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0" 05
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Part No "
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2q"
2q"
2q,
2q'
2q,
:_q"
2q"
2q"
2q,
zd^
2q"
i
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\
CB2
CBl
C84
NQtr
cB5, 87
CBB
CB9,9O
c9I r92 rgl
cg4
c95
cg5,g7
C98,99
c100
c101
c102
Crc1
cl04
c105 ,to5
Lq" t olerance
k = kilohm,
Syrnbol
R1
R2 rJ
R4
R5 '5
R7, B
R9,10
Rl1
Rl2
R}'
CT4
R15 ,15
R17 e 18
R]-g,2C
T?'I CD
ILLL, LL
R23,24
R?_5 ,26 127 ' tO
pra )a
rLLvgL/
RlI,12
R11 ,14
R55,15
Rt7 ,38
R1g u 40
R4L ,42
R43
R44
R45
R46
R47 ,48
R49,50
Rrl-,52
R55,54,55 ,56
P,57 ,58 '59 ,50
R51
R52
Ceramic
Ceramic
C eramic
Ceramlc
Ceramic
Ceramic
Cerami-c
0i1 paper
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytlc
Cerami-c
Mi-ca
Ceramic
RES ISTORS
L,
j watts, r-rnless
m = Megohm.
lescriptlon
Composition
Composi-tion
Composition
Composition
Composition
Carbon
Comp 'sition
Carbon
Composition
Carb on
Carb on
Composition
Carb on
Composition
Composltion
C-R network
Composition
Composition
Composition
Conposition
Composition
Composition
Composition
Conposition
Carbon
Composition
Carbon
Composition
Composition
Composition
Composi-tion
Composition
Carbon
Composition
0" c02
5op
lop
0,01
0,002
c.01
0. 002
0,002
40-20-20
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100
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2OOp
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2q"
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15ov
2JOv
25v
25v
lOOv
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{OOv
otherwise marked_ or not ed_,
Part No.
47 0k
220k
/'7 ^l1-
+/wr
100k
1Ock
4k
I tr/1]-
-L -, Vlr
100k
150k
100k
200k
ca^
a- o CIIL
100k
L7k
I I --
11ak
100k
2,2m
^ .)t-
aoLr,
100k
5tk
220k
1m
47 C ohm
100 ohm
47C ohm
100 ohm
1m
220k
47k
47k
100k
5k
o D1.
C- c Lts
5/"
2C4"