Technics SL-230 Service Manual

ORDER NO, §D7804-1347
Frequency
Generator
Servo
Automatic
Turntable
System
SL-230
wane,
—
/SL-231
©.00,(%A),
(XGE),
(XG),
(XGF)
7
(XG),
(XGF)
*
The
model
SL-230(X)
is
available
in
Asia,
Latin
America,
Middle
East
and
Africa
only.
*
The
model
SL-230(XAL)
is
available
in
Australia
only
,
*
The
model
SL-230(E)
is
available
in
Scandinavian
only
*
The
model
SL-230(XGE)
is
available
in
England
only.
*
The
model
SL-230(XG)
is
available
in
European
only.
*
The
model
SL-230(XGF)
is
available
in
France
only.
*
The
mode!
SL-231(E)
is
available
in
Scandinavian
only.
*
The
model
SL-231(X)
is
available
in
Asia,
Latin
America,
Middle
East
and
Africa
only.
*
The
model
SL-231(XAL)
is
available
in
Australia
only.
*
The
model
SL-231(XG)
is
available
in
European
only.
*
The
model
SL-231(XGF)
is
available
in
France
only.
*
SL-230
is
of.
silver
finish.
*
SL-231
is
of
black
finish.
nee
(Specifications
are
subject
to
change
without
notice
for
further
improvement.)
General
Power
supply:
~110-120/220-240V,
50/60
Hz
Within
0°32’
(at
the
inner
groove
of
Power
consumption:
3W
SO-em
am
record)
Dimensions:
AUC
Oe
a
noi
od
ee
bt
ame
Offset
angle:
og
|
(Ww
x
H
xD)
(16-59/64
x
4-31/3
32
x
14-49/64
inches)
Adjustable
stylus
O
to
3g
(stylus
pressure
direct
reading
Weight:
4.6
kg
(10.1
Ib.)
pressure
range:
type)
Cartridge
weight
range:
5.5
to
8.59
(14.5
~
17.5g
including
Turntable
section
?
ee
i
Ty
pe:
Frequency
Generator
Servo
Automatic
Headshell
weight:
9g
|
Turntable
System(Auto-start,
Auto-
return,
Auto-stop,
Repeat
play
and
Cartridge
section
pena
Oley)
Model
No.:
EPC-270C-X
Drive
method:
Belt
drive
Tyne:
Moving
magnet
Motor:
Frequency
Generator
Servo
DC
motor
—
Frequency
response:
20
Hz
to
25
kHz
—3
dB
|
Turntable
platter:
Aluminum
die-cast,
30.4
cm
(12")
Io,
(oe?
ae
Turntable
speeds:
33-1/3
and
45
rpm
Outsucveltaae:
ey.
Popa.
_
Pitch
controls:
Individual
adjustment
controls,
6%
ieeiieke
ies
ne
ney
agjustment
range
velocity
.
Wow
and
flutter:
0,045%
WRAMS
(JIS
Ca527}
(6.4
mV
at
1
kHz.
10cmisec.
zero
to
Se
oe
peak
lateral
yelocity
[DIN
45500)
)
Eee:
—/0
dB
(TEC
98
Weighted)
Channel
separation:
ZOUD
Br
TREZ
|
Channel
balance:
Within
2
dB
at
1
KHz
Tonearm
section
|
ie
Compllance
(dynamic):
10
x
107°
cm/dyne
at
100
Hz
Ty
pe:
Universal
tubular
arm,
staticbalanced
(CBS
STR-100)
type
75
ey
aaron
a
Effective
length:
230
mm
(9-1/16")
ae
aay
ape
+2.5mN)}
Overang-
1S
ae
19/32")
Weight:
6.0
g
(cartridge
only)
Friction:
Within
7 mg
(horizontally
and
Replacement
stylus:
EPS-270ED
vertically)
Effective
mass:
13
g
(without
cartridge)
Tracking error angle: Within 2°32’ (at the outer groove of
30 cm. (12"") record)
Matsushita
Electric
Trading
Co.,
Ltd.
P.O.
Box
288,
Central
O
saka
7
an

Technics SL-230 Specifications

General

Drive method	Belt drive
Motor	DC servo motor
Effective length	230mm
Overhang	15mm
Speeds	33 1/3 and 45 rpm
Tonearm type	Static balanced
Rumble	-70 dB (DIN-B)

Summary

Specifications

Features

New Type Frequency Generator Servo Control

Details the servo-controlled DC motor for accurate speed and improved IC circuitry for immediate correction.

Fully-Automatic Operation

Details automatic operations, silent mechanical movements, record/stylus protection, and memo-repeat feature.

Highly Sensitive Gimbal Suspension System

Explains high-sensitivity arm with low friction achieved by precision pivot bearings and gimbal suspension.

Electronic Speed Switching & Pitch Controls

Covers electronic speed switching and independent pitch controls for speed variation.

How to Operate

Manual Play Operation

Step-by-step guide for manual playback, including placing the record and starting playback.

Stopping and Suspending Playback

Instructions on how to stop playback, including auto-return and temporary suspension.

Automatic Play Operation

Guide for automatic playback, covering record size selection and auto-start procedures.

45-rpm Record Operation

Specific instructions for playing 45-rpm records, including the use of the adaptor.

Adjustments

Arm-Lift Height Adjustment

Procedure for adjusting the distance between stylus and record surface during cueing.

Speed Adjustment Methods

Covers speed adjustment using pitch controls and PCB potentiometers.

Automatic Start/Return Position Adjustment

Procedure to adjust tonearm auto-start and auto-return positions.

Anti-Skating Control Adjustment

Guide to setting the anti-skating control knob to match stylus pressure.

Check Points

Turntable Not Rotating

Troubleshooting steps for when the turntable does not rotate upon power-on.

Turntable Rotates Abnormally

Diagnostic procedures for abnormal turntable rotation and speed issues.

Schematic Diagram

Exploded Views and Parts List

Cabinet and Chassis Parts

List of replacement parts for the turntable's cabinet and chassis components.

Tone Arm and Arm Base Parts

List of replacement parts specific to the tonearm and its base assembly.

Packings