Pioneer SX-1010 Service manual

O43-

(ART-

SERVICE MANUAL

STEREO RECEIVER

ex -1010

KCU,

F, GN

NOTE:

MODEL SX-

Round label on

rear panel

KCU

COMES IN THREE VERSIONS

I0I0

Voltage

120V only

, 130V

, 120V

llOV

220V and 240V

(Switchable)

220V only

DISTINGUISHED AS FOLLOWS:

Type

UL (U.

General export model.

SEMCO (Sweden), NEMCO (Norway),

DEMCO (Denmark) approved.

) and CSA (Canada) approved.

(74BO2M61 D)

C,D

PIONEER~

. . . . . . . . . . . . ..

. . . . . . . . . . . . . . . ..

CONTENTS

About 220V only model labeled "

This model whose rear

substantially in its circuit design

please see the manual on page 75 and the

connection diagram

assembly, P.

Before servicing, also please do not fail to check

rear panel.

C. board pattern and its parts list.

panel is

, Miscellaneous parts list

GNu

labeled "GNu circular mark operates only on 220V

from two other

models. When repairing this model

followings which include such items as Circuit

, Schematic diagram of power supply circuit

to see if the "

GN" mark is labeled on the

SPECIFICATIONS...............................................

FRONT PANEL FACILITIES

CONNECTION DIAGRAM

BLOCK DIAGRAM.......................................... ....

CIRCUIT DESCRIPTION .........................................

DIAL CORD STRINGING..................................... ....

DISASSEMBLY .................................................

PARTSANDP. BOARDLOCATIONS............................. 14

LEVEL DIAGRAM..................... .........................

ALIGNMENT PROCEDURE

10.

10. 1 English...................................................

Abgleichverfahren ..........................................

10.

EXPLODEDVIEWANDPARTSUST............................... 20

11.

SCHEMATIC DIAGRAMS

12.

PARTS LIST

12. Circuit Connection Diagram and

12.2 FM

12.3 Tuner Assembly (AWE-

12.4 Muting Circuit

12.

12.6 Control AmplifierAssembly(AWG-

12.7 Power

12.

12.9 Power Supply

10 Power Supply

12.

12. 11 Switch Circuit

12. 12 Switch Circuit

12. 13 Switch Circuit

12.14 Switch Circuit

12.15 Switch Circuit

12. 16 Switch Circuit

12. 17 5PConnectorAssembly(AWX-

PACKiNG METHOD AND PART NUMBERS

13.

SCHEMATIC DiAGRAMS

14.

PARTS LIST FOR 220V ONLY MODEL

14. 1 Circuit

14.2 Power Supply

Front End (AWB-017).................................... 32

Assembly (AWM-O39)........................ ....

Equalizer Amplifier Assembly (AWF-

Amplifier Assembly (AWH-

Protection Circuit Assembly (AWM-

Circuit Assembly (AWR-

Assembly (AWSAssembly (AWS-

Assembly (AWS-069) ............................

Assembly (AWS-

Assembly (AWS-O72) ............................

Connection Diagram and Miscellaneous Parts. . . . . . . . . . . . . . . .. 75

Circuit Assembly (AWR-

.................,.................... 5

..........................,............. 7

, P. C. BOARD PATTERNS AND

Miscellaneous Parts.

040)................................... 33

013) . . . . . . . . . . . . . . . . . . . . . . ..

O27)..................... ....

O32) .. . . . . . . . . . . . . . . . . . . . . . . ..

062) . . . . . . . . . . . . . . . . . . . . . . . ..

053) .. . . .

O54) . . . . . . . . . . . . . . . . . . . . ..

064) ............................

068) ............................

070) ............................

071) ............................

062) ............................

.......................... 71

, P.C. BOARD PATTERNS AND

063) . . . . . . . . . . . . . . . . . . . . . ..

8X-1C10

....................................

p) .................................."...

................................................

.................................

..............................

.......................................

.........

1 " SPECI

SEM!CONDUCTORS

...................................................... 3

EETs

......................................................... 5

ICs

Transistors

Diodes

................................................... 41

CATIONS

............................................. 73

AMPLIFIER SECTION

Continuous Power Output

20Hz~20kHz

(Both channels driven) .................. WOW + 100W

(8,Q), W5W + 105W (4,Q)

1kHz (Both channels driven) ......... 110W + 110W (S,Q), 110W + 110W

Harmonic Distortion

(20Hz~20kHz Continuous

Power Output)

(IW + 1W, Power Output) ............ Less than 0.05%

I ntermodulation Distortion

(Continuous Power Output) ......... Less than 0.

(IW + 1W

Power Bandwidth

(I H F

Frequency Response ........................... 7Hz~100kHz

I nput Sensitivity/I mpedance

POVlfER AMP IN ........................... 1V/50k,Q

, Power Output) ............ Less than 0.05%

, Both channels driven) ......... 5Hz~40kHz (T. D. 0.

.............................. Less than 0.

Output

Speaker ............................................. A

Headphone

Damping Factor

(1 kHz 8,Q)

Hum & Noise

(IHF

, short-circuited

.................................... More than 50

, B, C, A + B, A + C, B + C (4,Q~16,Q)

4,Q~16,Q

A Network) .................................... More than 100dB

Residual Hum & Noise

(S,Q, Pre & Power amplifier) ......... Less than 1 mV

PR IEAMPLI FI E R SECTION

Input Sensitivity/I mpedance

PHONO 1 ....................................... 2.

PHONO 2

PHONO Overload Level

(rms/p-

....................................... 2.5mV/50k,Q

MIC

AUX

TAPEPB1

TAPE PB 2 (D I N connector)

Output Level/I mpedance

TAPEREC1

TAPE REC 2 (DIN connector) ......

PRE OUT

Harmonic Distortion

(20Hz~20kHz)

.............................. Less than 0.

5mV /50k,Q

250mV!700mV

0mV /50k,Q

150mV/70kD

150m V /70k,Q

150mV!70k,Q

150mV

30m V /80k,Q

1V/1k,Q

(4,Q)

1%)

...............

...........

.....

...

Frequency Response

PHONO (RIAA equalization).........

AUX, TAPE PB

Tone Control

BASS:

MAIN

SUB

TREBLE:

MAIN

SUB

Filter

LOW CUT

HIGH CUT

Loudness Contour

(Volume control set at

40dB position)

Hum & Noise

(IHF, short-circuited

A Network)

PHONO

MIC .....

AUX, TAPE PB

Muting

FM SECTION

Usable Sensitivity (I

Capture Ratio (IHF)

Selectivity (IHF)

to-Noise Ratio

Signal-

Image Rejection (98MHz)

I F Rejection (98MHz)

Spurious Rejection

AM Suppression ......

Harmonic Distortion:

MONO

STEREO

Frequency Response

Stereo Separation

1kHz

50Hz~10kHz

Sub Carrier Suppression

Antenna Input

Muting

H F)

30Hz~15kHz :!:O.

10Hz~40kH(~ dB

:!:10dB (100Hz)

:!:5dB (50Hz)

:!:10dB (10kHz)

:!:5dB (20kHz)

3dB

8dB (50Hz) 6dB/oct.

9dB (10kHz) 6dB/oct.

+8dB (100Hz), +4dB (10kHz)

More than 70dB

More than 65dB More than 95dB

20dB

1.711V

0dB

90dB

72dB

110dB 110dB

11 Od B

55dB

Less than 0.

20Hz~15kHz~g:6 dB 50Hz~10kHz~g:g dB

More than 40dB

More than 30dB

65dB

300,Q

ON-

Balanced

OFF

75,Q Unbalanced

SX-

1 01 0

AM SECTION

Sensitivity

(I H F, Ferrite antena)

(IHF, Ext. antenna)

Selectivity................

Noise Ratio

to-

Signal-

I mage Rejection

I F Rejection

300l1V /m

1511V

40dB

50dB

65dB 85dB

MISCELLANEOUS

Power Requirements

AC 120V 60Hz or 110

, 120, 130

220 and 240V

(switchable) 50/60Hz

Power Consumption

400W (UL approved model only)

640W (5 line Voltage model only)

Dimensions

Weight:

Without Package

With Package

520 (W) x 175 (H) x 440 (D) mm

1/2 x 6-7/8 x 17-

20-

5/16 in.

22.2 kg (48 Ib 13 oz)

26.

6 kg (58 Ib 8 oz)

FURNISHED PARTS

FM T-type Antenna

Operating Instructions

Fuse 6A

Fuse 3A

line voltage model only)

~ (5-

NOTE:

Specifications and the design subject to possible modification without notice due to improvements.

FRONT PANEL FACiliTIES

.,~..

. . . ..

. . ..

FRONT PANEL FACILITIES

SPEAKER BUTTONS

Each of speaker systems A

of output terminals A

By pushing the following:

SPKR-

NOTES:

Whenanytwopairsofthebuttons(A+B

depressed

come into operation. However

even though depressed at the same time

2. Only when listening through headphones

SPKR button(s) in us" to OFF

position (pressed).

Speaker systems A into operation

A ....

Speaker systems B into operation

B ....

Speaker systems C into operation

C ....

, the corresponding

POWER SWITCH

Turn this switch ON but wait for

during the silence of which the protection circuit elimi-

nates the unpleasant noise not imputed to a receiver fault.

PHONES (1

, 2) OUTPUT

Accept two pairs of headphones.

BASS CONTROLS

Adjust bass tone quality.

100Hz. . .. For

50Hz. . . . . . After

Possible up to

reducing at 100Hz in 2dB steps.

further adjust frequencies below 80Hz by

this control

5dB of

response at 50Hz in 2.

LOW CUT

LOW.

HIGH

TONE SWITCH

When in the ON (up) position

amplifier section to operate with a flat frequency

less of the tone control settings. Use this switch to check

the audio characteristics of your listening room such as

when it is

cartridges and speakers and also to particularly set the

tone controls to be assessed.

, HIGH CUT

When the low-

motor or other

press the LOW CUT button to ON. In no

interference

When the high

(records or other source) is much

this button to ON. In no interference

leave it undepressed (OFF).

necessary to check the tone quality of phono

, and C is connected to each

, B

, B, and C.

pairs of speaker systems ;"iIl

, operating all three button"

B+C C+A)are

is not possible.

, press again the

(undepressed) from the ON

some 3 to 6 seconds

JACKS

frequencies below 400Hz.

the low

lOdB of

adjustment by the 100Hz control

necessary. Possible up to

, if

increasing or reducing in bass

increasing or

5dB steps.

BUTTONS

pitched rumble (turntable

source) is obtrusive

, leave it undepressed (OFF).

frequency scratch noise

, this switch causes the

, depress

, de-

regard-

SIGNAL METER

For AM and FM station tunings

AM tuning: Tune

FM tuning:

AUDIO MUTING BUTTON -

Depress this button to mute the audio input to -

No need to turn down the

occasion for your convenience.

the dial pointer so that the SIGNAL

meter needle comes to the extreme right.

Both the SIGNAL and FM

meters work

together. The

TUNING

optimum

point of the SIGNAL meter needle

same as in AM tuning. Then use the FM

TUNING meter.

"'"'0 """"'" -do. ".

.0'0

20dB

VOLUME control on each

TREBLE CONTROLS

Adjust treble tone quality.

10KHz

20KHz

.. For the high frequencies above 2.

Possible up to

reducing in treble response at 10kHz in

2d B steps.

.. After adjustment by the

10dB of

increasing or

10KHz control

further adjust frequencies above

by this control

to 5dB of increasing or reducing in treble

response at 20kHz in 2.

, if necessary. Possible up

5dB steps.

TAPE DUPLICATE SWITCH

Leave this switch in the ON (down) position to duplicate

or edit a recorded tape using two tape decks. For normal

use, switch over to the OFF (up) position.

is the

20dB.

5kHz.

12KHz

FM TUNING METER

While getting the SIGNAL meter needle going to the right

make fine adjustment with the FM TUNING meter

needle comes to the

center (indicating the optimum

reception).

-FM STEREO INDICATOR

TUNING KNOB

BALANCE CONTROL

Adjusts the balance between the sound volume from the

left and right speaker systems.

DOLBY NR ADAPTOR SWITCH

When employing Dolby Noise Reduction Adaptor

this DOLBY NR ADAPTOR to ON.

4CH ADAPTOR SWITCH

When using the 4-channel rear amplifier connected to the

4CH jacks on the rear panel

to ON.

TAPE MONITOR (1

Monitor the recorded sound while

deck. Also possible to play back tapes as follows:

1 . . .

With a tape deck connected to the TAPE

1 jacks (REC and PB), either monitoring

of recording in progress or playing back is

possible.

. .. With a tape deck connected to the

2 jacks (REC and PB or

, depress this 4CH ADAPTOR

2) SWITCHES

recording with a tape

REC/PB con-

nector), the same as in 1 above

ble.

whose

, depress

TAPE

is possi-

FUNCTION SELECTOR BUTTONS

For selecting the program source

follows:

AM..

For AM broadcast reception.

For FM

STEREO indicator lights up

broadcast is in stereo.

PHONO 1

PHONO 2

MIC

AUX

.. For operating a

the PHONO 1 input jacks.

For operating a turntable connected to

the PHONO 2 input jacks.

For using a microphone. Not possible to

mix with other program source.

For listening to audio equipment

tridge tape player

connected to the ALJX input jacks.

, push each button as

broadcast

reception. The

turntable connected to

, TV sound tuner

when the

, etc.

DIMMER SWITCH

Dims the brightness of the indicator light. Press

restore full brightness.

again to

FM MUTING BUTTON

Leave this button undepressed (in the ON position) while

tuning in FM stations. Inter-station noise may interfere

with FM

suppress this noise

ed (in the ON position). If the low

to distance from the

depress this button

heard with the MUTING "

reception while tuning between stations. To

, leave the MUTING button undepress-

signal strength is due

transmitter or other influences

, at which the weak

station will be

OFF.

MODE BUTTON

Leave this button undepressed (if

to release it when already depressed) for

playback. For MONO playback

stereo signals for left and right channels will be mixed into

mono signal which will be heard from the center of both

speaker systems.

LOUDNESS BUTTON

Depress this button to listen at low volume.

ear s frequency response varies according to the listening

volume. The depressed button compensates for

response with emphasis on the bass and treble.

MIC INPUT JACKS

, R . . .

NOTE:

Use the high impedance (above 20M2) with 6mm diam. phone

plug,.

.. For connecting the

microphones.

necessary, depress this

STEREO

, depress it. In this case

The human

hearing

left and right channel

VOLUME CONTROL

Governs both the volume of sound

speaker systems and from the headphones.

outputs from the

(car-

CONNECTION DIAGRAM

SX-

1 01 0

OUTDOOR

FM ANTENNA

TYPE FM

ANTENNA

75n :

coaxial:

cable

300n feeder

ANTENNA

TURNTABLE

CARTRIDGE

TAPE PLAYER

TAPE DECK

(open-reel, cassette) TAPE DECK

LINE

INPUT

LINE

OUTPUT

Playback/Recording Cord (DIN-

LINE

INPUT

LINE

OUTPUT

type)

GROUND

FM DE-EMPHASIS SWITCH

I n some countries

is delivered with a selector switch

for adjusting the FM de-

from 50 to 75!lsec. If your unit

is equipped with such a switch

on the rear panel

sound range gives an impression

of weakness move the de-em-

phasis switch to its other posi-

tion.

. the receiver

emphasis

, and if the high

PRE/POWER AMP

bridge/connecting plugs

The

between PRE OUT and POWER

I N jacks should always be left in

position in normal use. If they

are disconnected or removed

sound will come from the speak-

ers.

Always be sure to cut the power

supply before attempting to re-

move them.

, no

For connecting

4-channel discrete

FM broadcast adaptor

For connecting

- R CH

For connecting

Dolby NR

adaptor

channel adaptor

L CH

(A)

SPEAKER SYSTEMS

FUSE

R CH

(B)

L CH

R CH

,?,,'

BLOCK DIAGRAM

':~~CED

L".-i1CED

~ ~

4 CH MPX OUT

(C?)

~~L

~" --" "

Stabilizer

to Tuner

S18

::rll""

AUX

MIC

or:

:r:

PHONO 2 (0

AUX

SWITCHES'

S 1 FUNCTION

S 2

S 3

S 4

S 5

DUPUCATE

TAPE MONITOR 1

TAPE MONITOR 2

SlO

4 CH ADAPTOR

SI1

DOLBY NR ADAPTOR

S,Z

MODE

PHONO 1 PHONO 2

MIC AUX

S i1 LOUDNESS

S 14 TONE

S15 LOW FILTER

S 16 HIGH fILTER

S 17 AUDIO MUTING

S 18 DIMMER

S 19 FM

S 20 SPEAKER A

S22

S 23 POWER

DEFEAT

MUTING

S19

MUTiNG

SWiTCH

SIQ

CO r-

a:: CL.

a:: - CL.

L w.J

CL.

r "",

CO r-

CL.

a::

i'cl co

a:: N CL.

L w..J

CL.

or:-'

r- co

::0 "" 2

0 -

Sa:: 2

0 ~-

L 8-!

:r:

~6~-'

::00 2

0 -

S'0a

, 0--

r- 2

::0 -

'C ~gj-!

a::a::

iDh:

';)h:

S11 a

' Sl1b

AF section

Stabilizer d:c Regurator

S'40

'-----v----'

to Power amplifier

J~~~""'

-Q-Q-

SX-

1 01 0

CIRCUIT DESCRIPTION

SIGNAL PATH

1. The FM broadcast

antenna is fed to the two dual-

field-effect transistors in the front end

radio frequency amplification. This

converted into an intermediate frequency by

the dual-

bination with the

gate MOS FET mixer stage in com-

lator.

2. The

intermediate frequency signal

verted within the front end

ceramic filters and three ICs

, amplified

tuned

audio frequency (composite) signal.

The composite

fed to the 4 CH MPX terminal jack

multiplex decoder stage.

3. The multiplex decoder stage

three functions: to

posite signal into the left and right

stereo signals

mode switching between stereo/mono

to switch the

priately.

The decoding system uses a phase locked

loop (PLL) circuit

stable operation and excellent

ration with low

noise (such as

ambient temperature changes.

After decoding, the

transistors and one LC filter

residual carrier component (38kHz

and SCA) is rejected

amplifier section.

4. The FM muting circuit consists effectively of

two circuits, designed to reduce the pulse

noise which can so

muting circuit is operative.

The one circuit is an

corporated into the IC

modulated circuit is

the IC

, and the other short-

signal by means of a reed relay.

5. The AM tuner section

lithic IC which functions as radio frequency

amplifier

lator

detector. The output is a pure

6. The signals which are applied to the MIC and

PHONO terminal jacks are selected by the

FUNCTION switch before being fed to the

first stage of the three-

direct-coupled equalizer amplifier by which

the signals are amplified.

In order to reduce the

circuit configuration employed enables the

potential at the input and output terminals

to be set at near zero volts.

, frequency converter

, intermediate frequency amplifier

signal waveform from the

gate MOS

for

signal is

signal from the local oscil-

, con-

, is fed to four

, where it is

, and detected

, becoming a

signal following detection is

and the

uses one IC for

demodulate the com-

channel

, to operate the automatic

, and

stereo indicator lamp appro-

, which assures continuous

stereo sepa-

susceptibility to external

ignition noise) and

car

signal is fed to four

, and then to the audio

easily arise

, where the

, 19kHz

when a

electronic switch in-

, so that the de-

switched off and on in

circuits the audio

employs one mono-

, local oscil-

, and

audio signal.

stage differential

switch noise

, the

It incorporates an independent differential

circuit in the first stage of the

equalizer

amplifier whose DC supply uses twin plus

and minus.

7. The output from the equalizer amplifier

together with that from the

jacks, the audio

and the audio signal from the FM tuner

all selected by the FUNCTION switch

pass through the switch circuits for TAPE

DUPLICATE

ADAPTOR DOLBY NR ADAPTOR

signal from the AM tuner

, TAPE MONITOR, 4 CH

AUX terminal

, are

, and

the circuits for BALANCE and VOLUME

controls, before being fed to the control

amplifier.

8. The control amplifier has an extremely high

input impedance

sistors in a

This greatly reduces the influence of the

performance inherent in equipment

nected externally.

The output from this two-

coupled circuit is

systems.

One goes to the TONE switch via the twin

tone control circuit, and the other goes

directly and unmodified in any way

TONE

between them.

switch. The TONE switch selects

9. The amplifier section of the twin control has

closed loop NFB

main and sub circuits

own transistor

ference.

10. The control amplifier output is fed to the

power amplifier after

LOW FILTER, HIGH FILTER and AUDIO

MUTING circuits.

The first stage of the power amplifier is a

differential amplifier element with constant

current load, and the second stage

a differential amplifier element, so that DC

potential drift is prevented.

On the other hand, the final output stage

uses two power transistors in parallel in both

the upper and lower circuits

collector dissipation is possible.

Again, in order to reduce the

which occurs at low

current has been set at a standard

100mA.

11. The power amplifier output is fed to

three push

SPEAKER switch. This selects A

speaker system terminal connection.

If all three speaker systems were to

connected

speaker impedance might be less than 4il.

To guard

three buttons are

three systems are

amplifier.

12. The power amplifier circuit board includes a

, using PNP and NPN tran-

direct-coupled two-stage circuit.

con-

stage direct-

divided into two circuit

.to the

amplifiers for both the

, each of which has its

, eliminating mutual inter-

passing through the

, too, uses

, so that large

distortion

signal levels, the idle

level of

the

buttons which form

simultaneously, the

, and C

, B

effective

the

against this possibility, when all

depressed together

, all

disconnected from the

power limiter circuit which is independent

of the signal

current exceeds the maximum rated value

the power limiter circuit

signal to protect the power transistors.

The 'sensing ' for this protective

performed by

across the emitter

transistors. There are also protective circuit

which guard

power amplifier output junctions

circuit. If the power transistor

shorts the input

circuit is

detecting the voltage drop

resistors of the

power

against DC potentials at the

, against

speaker complex load impedances less than

, and shorts across the speaker terminals.

Their operation is such that

responding abnormal condition

, under the cor-

, a relay acts

to separate the output junction and the

output

circuits also help to

signal which immediately follows switching

the POWER switch ON

disconnect the output after switched OFF.

circuit. Further

, these

mute the unwanted

, and to immediately

protective

DIAL CORD

STRINGING

1. Turn the tuning capacitor so that its plates

protrude as much as possible.

2. Tie one end of the string to the spring on the

TUNING pulley (attached to

capacitor ).

3. Lead the string around pulley A

it three turns around the TUNING shaft.

4. Lead the string around pulleys B

then wind it 1-

ING pulley.

1/2 turns around the TUN-

5. Now tie the other end of the

spring on the

TUNING pulley. Turn the

the tuning

, then wind

, C and D

string to the

TUNING shaft and check for proper func-

tion. Then trim the ends of the string.

6. Turn the TUNING shaft until the

the variable are all the way in.

pointer to the left-end starting point on the

dial and fasten it to the

position.

PULLEY D

TUNING PULLEY

plates of

Move the

string in that

DIAL POINTER

""' '""~ ~

. g

~~p~~

"""

~%-~"'"

DISASSEMBLY

1. To remove the wooden cabinet

the two screws holding each side

the back of the wooden cabinet upward.

2. Pull off all knobs.

3. Remove the two

the front panel and

washers. Then pull the panel gently forward.

remove the bottom plate

4. To

the ten screws holding it in place.

screws in the upper edge of

remove two nuts and

, first remove

, then lift

, first remove

WOODEN

CABINET

~i'

SX-

1 01

FRONT PANEL

~" '0

I%~"

~~~~~M

4 0

" 0

0 ~

:~o

~ o

1 ~

PARTS AND

TOP VI EW

P. C. BOARD LOCATIONS

KNOB (POWER

MONITOR

AA D-

, 4 CH ADAPTOR

040-

, DUPLICATE

, TONE

FRONT PANEL ASSEMBLY

ANB-255-

, NR ADAPTOR)

TUNER ASSEMBLY

AWE-

040-

C3)

RELAY

ASR-002-

PHONO JACK-

AKB-014-

ELECTROLYTIC CAPACITOR

000 IlF /63V

ACH-037-

POWER SUPPLY

CIRCUIT ASSEMBLY

AWR-

POWER TRANSFORMER

166-

ATTATT-

174-

A (KCU)

0 (F)

PHONO JACK-

AKB-017-

A (4 JACKS)

053-

B (6 JACKS)

KNOB (TUNING)

AAA-

026-

TUNING

PU LLEY

ASSEMBL Y

TUNING SHAFT AXA-

ASSEMBL Y

AXA-056-

FM FRONT END

AWB-017-

015-

POWER AMPLIFIER

ASSEMBL Y

AWH-

032-

EQUALIZER

ANTENNA TERMINAL

AMPLIFIER ASSEMBLY BOARD

AWF-013-0 AKA-

MUTING CIRCUIT ASSEMBLY

AWM-

039-

002-

BOTTOM VIEW

g =

KNOB (BASS-

VOLUME

AAB-

, BALANCE)

068-

MAIN , TREBLE-

MAIN

SWITCH CIRCUIT ASSEMBLY

AWS-072-

SWITCH CIRCUIT ASSEMBLY

AWS-

069-

PROTECTION CIRCUIT ASSEMBLY

AWM-062-

FERRITE LOOPSTICK ANTENNA

ATB-O27-

FERRITE ANTENNA

HOLDER ASSEMBLY

W72-

092-

ill =

0 ~!

0 I~

0 ~~

POWER SUPPLY

CIRCUIT ASSEMBLY

AWR-

054-

CONTROL AMPLIFIER ASSEMBLY

AWG-027-

LEVER SWITCH (POWER)

ASK-080-

ASK-

KNOB (BASS-

AA B-069-

0 (KCU)

081-

0 (F)

SUB, TREBLE-

0 0

SUB)

0 i~

69 0

(g) CJ

FUSE HOLDER

AKR-012- AKR-001-

0 (KCU)

0 (F)

AC POWER CORD

ADG-005-

SPEAKE R OUTPUT TE RM

AKE-O14-

I NAL

:~ ~

" "

10.

10. ENGLISH

ALIGNING THE FM SECTION

ALIGNMENT PROCEDURE

1. SX-1010 Control Settings

Set the controls (knob and switches) of the SX-

1010 as follows:

POWER:

FUNCTION: FM

FM MUTING: OFF

2. Connections between Test Equipment and the SX-1010

. The output

of the SX-1010.

. A distortion meter should be connected to the TAPE REC terminal jacks on the SX-

. An AC millivolt meter should be connected to the TAPE REC terminal jacks on the SX-

in parallel with the distortion meter.

3. Set both the FM signal

4. Turn the FM

5. Turn the lower core and adjust so that the TUNING meter

6. Increase the FM signal generator output to 60dB

from an FM signal generator should be connected to the 300Q antenna terminals

generator and the SX-

signal generator output level down to minimum.

1010 to indicate 98MHz.

needle is centered.---r

, modulated at 400Hz, with a deviation of

kHz.

7. Turn the upper core and adjust so that the distortion is at a

Steps 4 ~ 7 above should be repeated

ment is obtained.

several times in succession, until no significant improve-

" 0"

c Ie

~&J

minimum.

aa""a

(Z)

I010.

1010

:1:75

:~ 8

(1)

8. Set the FM signal generator output level to 10dB

tion of :1:75

9. Adjust for maximum output at 90MHz.

10. Adjust for maximum output at 106MHz.

11. Adjust for maximum output at 90MHz.

12. Adjust for maximum output at

Steps 11 ~ 12 above should be repeated

kHz.

impmvomenti, ob',;ned.

c "

106MHz.

0 0 = 0

" 0)" "

several times in succession

e,f

c c 0 "

, modulated at 400Hz

i 0 0

0 &

r $

1 (

I ~ t

, with a frequency devia-

, until no further significant

ALIGNING THE FM

Note: This

1. SX-

Set the controls (knob and switches) of the SX-

set of adjustments should not be carried out until the alignment of the FM section

(1 ~ 12 above) has been completed. The multiplex signal generator should be connected to the external

of the FM signal generator.

1010 Control Settings

MPX SECTION

modulator terminals

1010 as follows:

POWER:

FUNCTION: FM

FM MUTING:

2. Connections between the Test Equipment and the SX-

. The output

terminals of the SX-

. The oscilloscope X plates (horizontal inputs) should be connected to the PILOT OUT

terminals on the MPX signal generator

24.

. The AC

possible from L to R channels).

3. Multiplex Signal Generator Modulation

L + R (1kHz): 67.

PILOT (19kHz): 7.5kHz deviation

4. Set the FM signal generator output to minimum.

5. Adjust for a stationary Lissajous

6. Reset the FM signal generator to 60dB level output

7. Adjust for the maximum separation.

OFF

1010

from the FM signal generator should be connected to the

1010.

, and the Y plates (vertical inputs) to terminal number

millivolt meter should be connected to the TAPE REC

5kHz deviation

waveform on the oscilloscope.

, and modulate either the L or R channel.

300,Q antenna

terminals (with changeover

:~ 8

aocco 0

~ D

a a

" "

SX-

ALIGNING THE AM SECTION

1010 Control Settings

1. SX-

Set the controls (knob and switch) of the SX-

1010 as follows:

POWER:

FUNCTION: AM

2. Connections between Test Equipment and the SX-

. Connect

dummy resistor).

. Connect the AC millivolt meter to the TAPE REC terminal jacks.

3. Set the AM signal generator to

4. Set the AM signal

Adjust for maximum output (Carry out the ferrite loopstick antenna core adjustment at the

same time).

-5. Adjust for maximum output with the frequency set at 1

Adjustments 4 ~ 5 above should be repeated several times until no further significant

ment is obtained.

. Connect the AM signal

7. With a frequency of 1

frequency output of 70mV.

8. With an AM signal generator output of 80dB

the AM signal generator to the AM antenna terminals (in series with a

30% modulation at 400Hz.

generator output to 30dB at 600kHz.

generator directly to the AM ANT (antenna) terminals.

400kHz and an AM signal generator output

1010

400kHz.

of 36dB

, adjust for a low frequency output of

, adjust for a low

of 310mV.

",,"c" ~

1 01 0

1k,Q

improve-

(0)

" a

ALIGNING THE POWER AMPLIFIER

Note: There are individual circuit boards for the Rand L channels. The following instructions

apply to both channels (boards) and should be carried out for each in turn.

1. Nothing should be connected to the input jacks of the SX-

should be connected across the speaker terminals.

2. A DC millivolt meter should be connected across between terminal number 19 and earth.

3. Adjustment should be made to bring the voltage to zero.

4. The DC voltmeter should be connected between terminals number 14 and 16.

5. Adjustment should be made to bring the voltage to 50m

" CD a

SECTION

101O, and an 8.\1 dummy resistor

a 0

11 . EXPLODED VIEW AND PARTS

NOTE:

Parts number is subject to change for the purpose of improvement

with notice of a service bulletin.

Service bulletin will be furnished

requested to amend parts number in this

instructions.

Parts List of Exploded View-

NOTICE: Any parts asterisked(*

LIST

whenever necessary and you are

manual according to the

) are subject to being not supplied.

Key No.

Power transformer ATT-

Power transformer Power transformer ATT- 179-

Sub-chassis AN F-

Shield cover

Tuner assembly

Tuner assembly-held metal

Tuner assembly-

Electrolytic capacitor 18

Power amplifier assembly

Power supply circuit assembly

Power supply circuit assembly AWR-

Muting circuit assembly

Screw M4X15

Washer

Wooden cabinet assembly

14* 15*

16* 17* Shield cover

Heat sink

Heat sink-held metal

Equalizer amplifier assembly

19*

C. board holder

FM front end

Description

held metal

00011F 63V

Part No.

166-

174-

ATT-

242-

ANH-213-

AWE-

O40-

AN F-244-

ACH-037-

AWH-032-

A\llJR-053-

063-

AWM-

039-

ABA-OlO-

B21-011-

AMM-

034-

ANH-205-

AI\! F-231-

AN F-

232-

ANH-212-

AWF-013-

AEB-019-

AWB-017-

KCU

KCU, F

Tuning pulley assembly AXA-

Ground terminal strip (2P)

23*

Wire clip

Ground terminal strip (4P)

25*

Wire supporter AEC-151-

Protection circuit assembly AWM-062-

Power supply circuit assembly

Ground terminal strip (4P)

29* Wire clip 30*

32* Bottom plate

Chassis ANA-

Relay ASR-002-

Foot AEC-

015-

K13-048-

AEC-064-

K13-

047-

AWR-

054-

K13-

047-

AEC-004-

067-

AN E-056-

027-

...

;:::; ~

Ci)'

c..

c::::

c..

, -

Parts List of Exploded View-

Key No.

Dial scale

Dial scale-held metal

Dial pointer

Meter (Signal & tuning)

Lamp Box

Lamp holder

Pilot lamp socket

Pilot lamp 8V

C. board cover

Lamp board assembly

Pilot lamp 8V

12*

Lamp box

Pilot lamp 6V

Rubber bracket

Front panel assembly

Knob (Power

Knob (Bass-sub)

Knob (Bass-main)

Knob (Treble-main

Ornamental ring AAC-

Knob (Tuning)

Knob (Treble-

Knob (Dimmer

Coupler (knob-to-

Spacer

Bush

Knob (SPKR A

Knob (Low cut

Knob (Function)

Knob (Mode

Lever switch (Power! Lever switch (Power)

Phone jack (Headphone)

Shading plate

Nut (insulator)

35* Sub-chassis

Phone jack (Microphone)

Switch circuit assembly

38*

Shield cover

Control amplifier assembly

40*

Pulley shaft

Description

, 0.3A (meter)

, 0.

3A (dial scale) E22-

, 30m A (stereo indicator) AEL-

, Tone, Duplicate, Monitor

4 CH adaptor, NR adaptor)

sub) AAB-

, FM muting)

switch)

, High cut

, Loudness)

NOTE:

Parts number is subject to change for the purpose of improvement

with notice of a service bulletin.

Service bulletin will be furnished whenever

requested to amend parts number in this

instructions.

NOTICE: Any parts asterisked(* ) are subject to being not supplied.

AAG-O72-

AN F-243-

AAF-031-

AAW-

ANH-

ANGAKK-

AEL-015-

ANG-

AWX-069-

ANH-210-

AEB-

AN B-

AAD-

AAB-

, Volume, Balance) AAB-

20dB)

AAB-

AAA-

AAD-

AAE-

AEC-

AADAAD-065- AADAAD-

ASKASK-081-

K72-

AED-018-

AEC-

AN D-

K72-

AWS-

ANH-

AWG-

M49-

Part No.

029-

211-

097002-

100-

032-

014-

031-

255-

040069068068-

034-

026069-

082007-

152-

160-

064-

066-

067-

080-

026-

085-

O72-

024-

072-

206-

027-

025-

necessary and you are

manual according to the

KCU

, GN

Key No.

41 *

Pulley AEC-153-

Rubber bracket AEB-057-

Pilot lamp 8V

44* 45*

Lamp holder

Pulley-held metal ANG-102-

46* Pulley

Rubber bracket Rubber bracket

49*

50*

Sub-panel

Shading metal

Switch circuit assembly (dimmer)

Tuning shaft assembly

Switch circuit assembly (speaker)

Switch circuit assembly (filter

Switch circuit assembly (function)

Switch circuit assembly (mode

57*

Shield cover

Speaker output terminal

66*

Connector (AC power)

70*

Description

, 50 mA (position)

20dB)

, loudness)

Part No.

AEL-O23-

AN G-

AEC-101-

AEB-

AND-

AN F-

AWS-068-

AXA-056-

AWSAWS-071- AWS-069-

AWS-070-

ANH-208-

AKE-O14-

AC socket

5P connector assembly

Fuse holder (AC power) Fuse holder (AC power)

Phono jack-

Phono jack (1 jack)

Phono jack-

A (4 jacks)

B (6 jacks)

Antenna terminal board

Rear panel Rear panel Rear panel

AC cord grommet

AC power cord

AC cord grommet

Model name plate Model name plate

A KP-005-

AWX-062-

AKRc012-

AKR-001-

AKB-014- AKB-019- AKB-O17-

AKA-002-

ANC- 105-

AI\IC-

ANC-

AEC-O79-

ADG-005-

AEC-079- AKP-008-

AAL-200-

AAL-204-

Model name plate AAL-

Binding post for ground AKE-

Ferrite loopstick antenna

ATB-

Ferrite antenna holder assembly W72-

099-

057-

O58-

073-

249-

064-

111-

113-

205-

012-

027-

092-

KCU, F

KCU

KCU KCU

KCU

, F , F

')':1

,)A

Exploded View-

eX-

1 0'1 0

For KCU model

I -

3 J

'----

,."'

""""""",,"" " "" "" " "

~""

, y.- " . .,

".. :' " j

. + .. . :;;:,

~'. ",' " ~ .. .- .. . ~" . ' . '

j ,

=- -

'" '

" '.

-!;';;;

',p.

;~~;;;-, ,~;,:;:~;,..

., ~

-€!

" ,-"

'== ' -.-~..

~~ ~~

12.

SCHEMATIC DIAGRAMS P.

C. BOARD PATTERNS AND PARTS LIST

12. 1 CIRCUIT CONNECTION DIAGRAM AND MISCELLANEOUS

PARTS

I r "~

:tl

"'7' . "".'

A~.

--;;:, ""'A"

I:"

::",~ I

"'l

' J

rT:'b:c:~c-i

:'i

G8~

I '

=r;

"=r.~ 1'1'

-1-

, r

'1 (

~L 01 ~~. i

Jc.

I "'

1 ~

91,

~~I

;::' i

IJc'

h I

."c -

~~. I

'eM

r:-

, o

nL~;

rL I

-.J

2SC1116A

2SA747A

-0 0

II '

0 -0

ED .

' -f9

!2J-

r2-

I ',

t;L j

~~~~1f-bfd

')7

SX-

1 01 0

Miscellaneous Parts

CAPACITORS

Symbol

Ceramic Ceramic Ceramic

Ceramic

Mylar

Ceramic Ceramic

Ceramic

Electrolytic

C10

C11

RESISTORS

Symbol I

Electrolytic

Ceramic

Carbon film

Metal oxide Metal oxide

. CAPACITORS:

Description

0047

18,000 18,000

Description

RESISTORS: IN

50V 50V 50V 50V 50V

50V

250V 250V

250V

63V

250V

'hW

IN J.1F UNLESS OTHERWISE NOTED p:pF

UNLESS OTHERWISE NOTED k:k

, y.W

Part No.

CKDYF 103Z 50 CKDYF 103Z 50

CKDYF 103Z 50

COMA 472J 50

ACG-001-

ACG-003-

ACG-001- ACH-037-

ACH-037-

ACH-001-

Part No.

RD'hPS 225J

PS2P 332J

RS2P 332J

KCU

M:M

SEMICONDUCTORS

Symbol

Transistor

Description

2SC1116A-

2SC1079S-

2SD287P-

2SC1116A-

2SC1079S-

2SD287P-

2SC1116A-

2SC1079S-

2SD287P-

2SC1116A-

2SC1079S-

2SD287P-

2SA747A-

2SA679S-

2SB539P-

2SA747A-

2SA679S-

2SB539P-

2SA747A-

2SA679S-

2SB539P-

2SA747A-

2SA679S-

2SB539P-

Part No.

, 0 or Y

R or Y

, Lor M

OorY

R or Y

K, Lor M

, 0 or Y

R or Y

, L or M

, 0 or Y

R or Y

, L or M

, 0 or Y

R or Y

, Lor M

, 0 or Y

R or Y

, Lor M

, 0 or Y

R or Y

, Lor M

, 0 or Y

R or Y

, L or M

Continued on the Next Page

SWITCHES

Symbol

S23 Relay

S24

S25

S26

OTHERS

Symbol

Description

Fuse holder (AC power)

Lever switch (Power)

Slide switch (de-emphasis)

Description

, -

Part No.

ASR-

002-

AKR- 12-

AKR-

001-

ASK-

080-

ASK-O81-

ASH-

008-

Part No.

KCU

FM front end

Tuner assembly

Equalizer amplifier assembly

Control amplifier assembly

Power amplifier assembly

Protection circuit assembly

Power supply circuit assembly Power supply circuit assembly

Switch circuit assembly (function)

Switch circuit assembly (mode

Switch circuit assembly (filter

, loudness)

20dB)

Switch circuit assembly (speaker)

Switch circuit assembly (tape monitor)

Switch circuit assembly (dimmer)

Lamp board assembly

5P connector assembly

Muting circuit assembly

Wooden cabinet assembly

Foot

Tuning shaft assembly

Tuning pulley assembly

Ferrite antenna holder assembly

Front panel assembly

Dial pointer assembly

Dial scale

AWB-

017-

AWE-

040-

AWF-

013-

AWG-

027-

AWH-

032-

AWM-

062-

AWR-

053-

AWR-

054-

AWS-

069-

AWS-

070-

AWS-

071-

AWS-

064-

AWS-

072-

AWS-

068-

AWX-

069-

AWX-

062-

AWM-

039-

AMM-

O34-

AEC-

027-

AXA-

056-

AXA-

015-

W72-

092-

ANB-255-

AAF-

031-

AAG-

O72-

Meter (Signal & tuning)

Knob (Bass-main

Balance)

Knob (Bass-sub

Knob (Tuning)

Knob (Power

4 CH adaptor

Knob (SPKR A

Knob (Low cut

, Treble-main

, Treble-

, Tone

, Duplicate Monitor

, NR adaptor)

, High cut

Knob (Function)

Knob (Mode

, Loudness)

sub)

, Volume

20dB)

AAG-029-

AAB-068-

AAB-

069-

AAA-

026-

AAD-

040-

AAD-

O64-

AAD-

065-

AAD-

O66-

AAD-067-

+ 49 hidden pages