Pioneer SX-535 User manual

<ART-053-0>
SERVICE MANIIAL
AM IFM STEREO RECEIVER
sixr535
KCU. FV, GN
'r--t NOTE:
MODEL SX-535 COMF,S IN THREE VERSIONS DISTINGUISHED AS FOLLOWS:
iI
iI
Round label on
rear panel Voltage Type
KCU
FV
GN
120V only
110v, r20v,130v,
22OV and 240V
(Switchable)
220V only
CSA (Canada) and UL (U,S.A.)
approved
General export model with
de-emphasis selector switch
SEMCO (Sweden), NEMCO
(Norway) and DEMCO (Denmark)
approved
<74E02Y61H> (v)rqoNEER=

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CONTENTS
1. SPEC|F|CAT|ONS... .....3
2. FRONTPANELFACTLTTTES .... 5
3. CONNECTION DIAGRAM
4. DTSASSEMBLY. .....8
5. BLOCK DIAGRAM AND LEVEL DIAGRAM 9 ,
6. PARTS LOCATION . . .11
7. ADJUSTMENTS
8. DIAL CORD STRINGING . . .22
9. PACKING METHOD AND PARTS NUMBERS . . . . .23
10. EXPLODED VIEW AND PARTS LIST . . .24
11. SCHEMATIC DIAGRAM, P.C. BOARD PATTERNS AND PARTS LIST
11.1 Schematic Diagram . .Zg
1'1.2 Electro-parts List . . .31
11.3 TunerAssembly(AwE-046)... .....33
11.4 EqualizerAmplifierAssembly(AWF-014) ... ....40
lll il'J::'""."'J,fi:il:';llilil*'J:: : ::::::: :::: : n
11.7 PowerAmplifierAssembly(AWH-0351 ... ..rtg
11.8 Power Supply Circuit Assembly (AWR-06S, AWR-0671 . .Sz

sX-535
3. CONNffi#Kffiffiru DIAGRAM
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t
SPEAKER SYSTEMS
(A) (B)
OUTDOOR
FM ANTENNA T.TVF€ ATUTENNA AM ANTENNA
{indoor or outdoorl R IGHT [.EFT
CHANNEL CHANNEL
GROUruD
Connect to
lfround tgrminal
of turntable,
tapc dock" otc.
For 75f2
coaxial cable
TURNTABLE
R DIN TYPE
F ffi:ffi:'#!x.,o'r
@
t@t m
@l @l
FM DE.EMPHASIS SWITCH
ln some countries, the receiver
is dslivered with a selector switch
for adjusting the FM deemphasis
from 5O to 7Spsec. lf your unit
is eguipped with such a siwtch
on the rear pane!, and. if the high
sound rangp gives an inrpression
of rnnakness move the deem.
phasis switch to its other posi-
tion. {5 line voltage rnodel only}
LINE OUTPUT
LINE INPUT
LINE
I
CARTRIDGE TAPE DECK
TAPE PLAYER (open-reel, cassettel
OTECTION FUSE
TAPE DECK
(opcn-recl, cascttel
LEFT RIGHT
CHANNEL CHANNEL
t-ol
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@

T-
4.DISAS$EMBLY
To remove the wooden cabinet, remove 2 screws each fastening either
side and lift the cabinet while sliding it backwards.
Pull off all the knobs"
To remove the front panel, remove 2 screws fastening its top and nuts
and washers holding each of BASS and FUNCTION control shafts.
To remove the bot,tom plate, remove a total of 15 screws.
1.
q
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o.
4.
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Wooden
Cabi net
[s".\ffiq
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IP
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Bottom Plate

7. ADJUSTMENTS
FM Section
1. Switch positions on the SX-535:
FUNCTION
FM MUTING
POWER .. ..,c
2. Connection of instruments:
FM Signal Generator (FM SG)
AC Voltmeter
Distortion rneter
Oscilloseope
3. Set FM SG to
1-00d8 output.
4. T\rne FM SG and SX-535 to dial readings of 87.4MHz (left scale end) and
adjust T3 so that signal meter makes maximum deflection
LUOVo modulation
FM
OFF (pressed in)
ON
Connect to FM ANTENNA termi-
nals through 300Q dummy anten-
na.
Connect in parallel to TAPE REC
jack.
(17 SkHz deviation) at 400H2 and
EiX-Ei35
D.
6.
7.
8.
9.
10.
o
11
L2.
13.
L4.
15.
16.
Adjust T5 (lower core) so that tuning meter points to the center.
Set FM SG output to 8-10d8 and adjust T1, T2 and T3 to maximize
audio frequency output level.
Tune FM SG and SX-535 to dial readings of 106MHz and adjust TC3 so
FM SG output is
that signal meter makes maximum deflection when
100d8.
Set FM SG output to 8-10d8 and
maximize audio frequeney output level. adjust TCl , TCz and TCB to
Tune FM SG and SX-535 to dial readings of 87. 4MHz and adjust T4 so
that signal meter makes manimum deflection when FM SG output is
1 00d8.
Set FM SG output to 8-10d8 and adjust T1, T2 and T3 to maximize
audio frequency output level.
Repeat steps 7 through 10 so that output is maximized when the dial
indieates the given frequeneies.
Tune FM SG and SX-535 to dial readings of 87.4MHz andadjust T4 to
maximize audio frequency out'put level when FM SG output is 8-10d8.
Detune SX-535 so that only noise is received.
Adjust Tb (lower core) so that tuning meter points to the center.
Tune FM SG and SX-535 to dial readings of 98MHz. Fine tune SX-535,
observing tuning meter.
Set FM SG output to 60dB and adjust T5 (upper core) to minimize
distortion;
Set FM SG output to 100dB and adjust VR4 so that signal meter
readings
O ., ., E l" Too C "/ ,, o o @
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13

FM MPX Section
o The SX-535 incorporates a PLL demodulator circuit. This adjustment
should only be made when MPX IC has been replaced.
o This adjustment should be made after completion of FM section
adjustment.
1. Switch positions on the SX-535:
FUNCTION
FM MUTING FM
OFF (pressed in)
ON
Conneet to FM ANTENNA termi-
nals through 300O dummy anten-
na.
Connect to FM SG's external mod-
ulator terminals.
Connect horizontal input to MPX
SG's PILOT OUT termianls and
vertical input to No. 18 terminal of
tuner assembly.
Distortion meter Connect to TAPE REC jack.
3. Tune FM SG and SX-535 to dial readings of 98MHz.
4. Set MPX SG to +67.5kH2 deviation at lkHz for left and right ehannels
and FM SG output to 60d8.
5. Produce a Lissajous pattern on oseilloscope and adjust VR1 to make the
pattern still.
POWER
2. Connection of instruments:
FM Signal Generator (FM SG)
MPX Signal Generator (MPX SG) .
Oscilloscope
6. Set MPX SG to !67.5kH2
and to t7.5kHz deviation
60d8.
7 " Adjust T4 to
channel.
Nci. 18
deviation at lkHz for left and right ehannels
for 19kHz pilot signal. Set FM SG output to
minimize distortion of audio frequencies for left or right
Tuner Assembly (AWE-0461
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AM Section
1. Switch positions on the SX-535:
FUNCTION...O
POWER ....
2. Conneetion of instruments:
AM Signal Generator (AM SG) ;"
AM
ON
Conneet to AM ANTENNA termi-
nals in series with dummy antenna
( lkf,} resistor).
AC Voltmeter Connect to TAPE REC iack.
Set AM SG to SOVI modulation at 400H2 aEd 30dB output.
Tune AM SG and SX-535 to dial readings of 600kHz and adjust T6 to
maximize audio frequency output level. (Adjust core of ferrite loopstick
antenn a at the same time. )
Tune AM SG and SX-535 to dial readings of 1,400kH2 and adjust TC4
and TCb to maximize audio frequency output level"
Repeat steps 4 and 5 so that output is marimized when the dial indicates
these frequencies.
S)(-535
3.
4.
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d
Tuner Assembly (RWE-046)
{I/
15

Power Amplifer
o Do this adjustment when any of the transistors in the power amplifier
has been replaced.
o Terminal and VR numbers given first are for the left channel and those in
brackets are for the right ehannel.
1. Switch positions on the SX-535:
FUNCTION .... Aux(keepjacksfree.)
POWER .. .. ON
,SPEAKER . . OFF
2. Connect DC voltmeter between TP.1(2)() and No,-l(7) (*)terminals.
3. Adjust VRl(VR2) so that voltmeter reads 15mV at 10 minutes after
power is switched on.oIl.
oo
7
TP.2
o
o" ?o
Lertch"X:'l @
\
u
a
0
o
vR2
Right Channel TP.1
tl
@o
o
o
@
@@
Pswer Amplifier Assembly (AWH-0351
16

\*:-
ABG LEICHEN DE R ENDVERSTARKERSTU FE
r' Dieser Abgleich sollte durchgefiihrt werden, wenn einer der Transistoren in der
E nverstiirkerst ufe ausgewechselt wu rde.
* Die zuerst angegebenen Anschli.isse und VR-Nummern gelten ftir den linken Kanal
und diejenigen in Klammern fiir den rechten Kanal
1. Regeleinstellungen am SX-535:
FUNCTI ON (Programmquellen-Wdhlschalterl :
SX-E|35
POWE R (stromschalterl: ." '
SPEAKE R (Lautsprecher) :
2. Der Gleichspannungsmesser ist zwischen den
anzuschlieBen.
AUX (Reserveeingangl
ON (Einl
OFF (Niedergedriickt)
Anschliissen TP.l (2le und Nr.l (7)e
3. VRl (VR2l ist so zu justieren, daB der Gleichspannungsmesser 10 Minuten nach
dem Einschalten des Stromes 15 mV anzeigt.
t/
VR2 VRl \
Rechter Linker
TP '2 t\ Kanat Kanat
ENDVE RSTAR K E RSTU F E-Schaltung (AWH-0351
\_-
2L

8. DIAL CORD STRINGING
1. Turn the tuning knob until the plates of the tuning capacitor are as far
out as possible.
2. Fasten one end of the cord to the spring on the tuning pulley and lead it
round pulley A.
3. Wind the cord 3 turns round the tuning shaft and run it round pulleys B,
C and D.
4. Wind the cord L-Ll2 turns round the dial pulley and tie the end to the
spring while tensioning the spring slightly. Trim off e5cess cord.
5. Turn the tuning knob fully clockwise and fix the dial pointer to the cord
at the point where it indicates "10" on the dial scale.
T
Pointer
Tuning Pully
Tuning Shaft
22

f/
six_s35
9. PACKING METHOD AND PARTS NUMBERS
SIDE PAD
AHA-069-0
OPE RATI NG I NSTRUCTIONS
ARB .114.0 (ENGLISH' -KCU
ARB.106-4 (ENGLISH) -FV, GN
ARD-O7O.O (F RENCH/GE RMAN } _FV,GN
SIDE PAD
AH 4-069-0
PACKING CASE
AHD-227-O
i
\IV
CLOTH COVE R
H14-023-0 I
23

10. EXPLODED VIEW AND PARTS LIST
NOTE:
Parts number is subject to change for the purpose of improvement
with notice of a service bulletin.
Service bulletin will be furnished whenever necessary and you are
requested to amend parts number in this manual according to the
i nstructi ons.
NOTICE: Any parts asterisked (*) are subject to being not supplied.
Parts List of Exploded View
Key No. Description Part No.
6
7*
8*
9
10
11*
12
13*
14
15*
16
17
18
1g*
20
21
22*
23
24
25
26
27*
2A
29
1*
2*
3
4
5*
Mask
Lamp holder ,
Pilot lamp socket
Pilot lamp 8V, 0.3A (meter)
Lamp box
Meter (Signal & Tuning)
Wire clip
P.C. board cover
Lamp board assembly
Pilot lamp 8V, 0.3A (dial scale)
Lamp box
Pilot lamp 8V, 50mA (Stereo indicator)
Rubber bracket
Spacer
Dial scale-held metal
Dial pointer assembly
Nylon sheet
Dial scale
Sponge gum
Power ampl if ier assembly
Power transformer
Sub-chassis
Fuse 44 (F7, F8)
Fuse 3A lF2, F3, F4l
3.15A (F2, F3, F4l
Fuse 0.5A (F5, F6)
Power supply circuit assembly
P.C. board holder
Electrolytic capacitor 4,7O0pF 35V
Tuner assembly
AED.036-A
ANF.262-B
AKK-002-0
E22-O32-O
ANH.219-B
AAW-033-0
AEC-007-0
ANK-072-O
AWX-072-O
E22-O32-O
ANH-221-0
AEL-025-0
AE8-062-0
AEF-004-0
ANG-105-O
AAF€ZS$
AEC-031-0
AAG-083-A
AEC-I19:0
AWH-035-0
ATT-188-0
ATT-190-0
ATT.189-A
ANF-266-A
AEK-loO-0
AEK-400-0
AEK-101-O
AEK-042-O
AEK-l07-0
AEK-014-0
AWR-065-0
AWR-067-0
AEB-019-0
ACH-042-0
AWE-046-0
[?i t
Apply to KCU
Apply to FV
Apply to GN
Apply to KCU and FV
Apply to GN
Apply to KCU and FV
Apply to GN
Apply to KCU and FV
Apply to GN
Apply to KCU and FV
Apply to GN
24

SX-535
NOTICE: Any parts asterisked (*) are subject to being not supplied.
Key No. Description Part No.
34
35
36*
37
38
39
40
41
42
43
44
45*
46
47
48
49
50
51
52*
53*
54
55
56*
57*
59.
59
60*
61*
62
63
M
65*
66*
67*
30
31
32
33
Tuning pulley assembly
Screw M4 x 15
Claw washer
Wooden cabinet
AC power cord
Cord grommet
Model name plate
Plastic cover
Fuse holder (F2, F3 - protection)
Antenna clamper
Ferrite loopstick antenna
Antenna holder assembly
5P connector assembly
Binging post for ground
Washer
Rear panel
Speaker output terminal
AC socket
Antenna terminal board
Phono lack A (4jacks)
Phono jack B (4-jacks)
Ground terminal strip (2Pl
Chassis
Wire supporter
Terminal strip (4P)
Ground terminal strip (4P)
Pulley shaft
Pulley
Pulley
Phone jack (Headphone)
Pulley-held metal
Pulley-held metal
Line rcltage selector (fuse holder)
Connector socket (AC power)
Push switch (FM MUTING)
Tuning shaft assembly
Sub-panel
Reinforcement plate
Switch mount plate
AXA.OI5.A
ABA.O1O.A
821-01 1-O
AMM.O41-A
ADG-OOs.A
ADG-004-0
AEC-079-0
AAL-218-0
AAL-219-0
AAL-220-0
AEC-058-0
AKR-011-0
AKR-017-O
AEC-154-A
arc-96--p 7f',
AX8-001-0
AWX-062-0
AKE-017-0
ABE-005-0
ANC-126-4
ANC-127-A
ANC-124-A
AKA-001-0
AKP-004-O
AKA-002-0
AKB-014-0
AKB-015-0
K13-048-0
ANA-070-C
M45-105-C
AKC-I' li'{-O j,/
K13-047-0
M49-025-E
AEC-153-0
AEC-101-0
K72-026-0
ANG.1O7-A
ANG-106-4
AKR-001-O
AKP.OG-O
ASG-040-0
AX4-025-0
AND-076.8
ANF.267.A
ANF.264-A
Apply to KCU
Apply to FV
Apply to KCU and FV
Apply to KCU
Apply to FV
Apply to GN
Apply to KCU and FV
Apply to GN
Aprply to KCU
Apply to FV
Apply to GN
Apply to KCU and FV
Apply to KCU and GN
Apply to FV
Apply to GN
Continued on the Next Page
Farts'List of Exploded View 25

Key No. Description Part No.
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92*
93
94*
95*
96
97
98
Push switch (POWER)
Spacer
Spacer
Front panel assembly
Washer
Nut (90)
Bush
Stud nut
lnsulator bush
lnsulator washer
lnsulator nut
Spacer
Sub-knob
Sub-knob
Knob (POWER)
Knob (SPEAKERS, MONO, TAPE
MONITOR, LOUDNESS)
Knob (BASS, TREBLE, BALANCE,
VOLUME, FUNCTION}
Knob (TUNING)
Knob (FM MUTING)
Sl ide switch (Deemphasis)
Rotary switch (FUNCTI ON)
Phone jack (MlC)
SW & control assembly
Equal izer ampl if ier assembly
Bottom plate
Foot assembly
Wire clip
Wire clip
Washer (0.5t)
Claw washer
ASG-043-0
ASG-070-0
AEC-1@-0
AEC-I16-0
ANB.283.A
M45-086-0
871-004-0
AEC-160-0
ALA-008-0
E32-045-A
E34-004-0
AEC-085-0
AEC-152-A
AAE-007-0
AAE-008-0
AAD.O84-A
AAD.O54.B
AA8.068-A
AAA-024-0
AAD-O82.8
ASH-008-0
ASC-061-0
K72-O20-O
AWM-068-0
AWF-o14-0
ANE.O59-B
AEC-061-A
AEC-004-0
AEC-005-0
822-016-0
ABE-001-0
Apply to KCU
Apply to FV and GN
lncluding 69, 70
Apply to FV
NOTICE: Any parts asterisked (*) are subject to being not supplied.
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26 Parts List of Exploded View