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Technics SL-BD22D

Technics SL-BD22D
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ORDER
NO.
AD9507191C2
Service
Manual
FSG
servo
Automtic
Turntable
System
is
the
standard
mark
for
plug-in-connector
system,
Products
Automatic
Turntable
System
[™P
SL-BD22D
Colour
(K)--++
Black
Type
Area
Suffix
for
Area
Colour
Model
No.
(E)
Eurpoe.
(EB)
Geart
Britain.
(K)
(EG)
Germany
and
Italy.
Carrying
this
mark
are
interchangeable
and
compatible
with
each
other
SPECIFICATIONS
@
TURNTABLE
SECTION
Automatic
turntable
Auto-return
Auto-stop
Drive
method:
Belt
drive
Motor:
OC
motor
Drive
control
method:
FG
servo
control
Turntable
platter:
Aluminum
die-cast
Diameter
312mm
Turntable
speeds:
33-1/3
rimin
and
45
r/min
Wow
and
flutter:
0.045%
WRMS
(JIS
C5521)
+0.06%
Weight
zero
to
peak
(IEC
98A
weighted)
Rumble:
—70
dB
DIN-B
(IEC
98A
weighted)
@
TONEARM
SECTION
Type:
Static-balanced
straight
tonearm
Plug-in-connector
cartridge
system
Overhang:
15mm
Effective
length:
230
mm
Tracking
error
angle:
Within
2°32’
at
outer
groove
of
30
cm
disc
Within
0°32"
at
inner
groove
of
30
cm
disc
Applicable
cartridge
weight:
69
@
CARTRIDGE
SECTION
Type:
Moving
magnet
stereo
cartridge
Frequer~,;
response:
20
Hz
~
20
kHz
Output
voltage:
2.5
mV
at
1
kHz,
5
cm/s.
zero
to
peak
lateral
velocity
Channel
separation:
22
dB
at
1
kHz
Channel
balance:
Within
2
dB
at
1
kHz
Recommended
load
impedance:
47
kQ~
100
kQ
Compliance
(dynamic):
8
x
10°
*cm/dyne
at
100
Hz
Stylus
pressure
range:
1.25+0.25g
Weight:
6 g
(cartridge
only)
Replacement
stylus:
EPS-34CS
@
GENERAL
Power
supply:
For
(EB)
area’
AC
230V
~
240V,
50/60
Hz
For
(E,
EG)
area:
AC
230V,
50/60
Hz
w
Power
consumption:
3
Dimensions:
(WxHxD)
430x93X375
mm
Maximum
height
when
dust
cover
is
open
430360410
mm
Weight:
3.6
kg
(7.9
Ib.)
Specifications
are
subject
to
change
without
notice.
Weight
and
dimensions
are
approximate.
AX\WARNING
This
service
information
is
designed
for
experienced
repair
technicians
only
and
is
not
designed
for
use
by
the
general
public.
It
does
not
contain
warnings
or
cautions
to
advise
non-technical
individuals
of
potential
dangers
in
attempting
to
service
a
product.
Products
powered
by
electricity
should
be
serviced
or
repaired
only
by
experienced
professional
technicians.
Any
altempt
to
service
or
repair
the
product
or
products
dealt
with
in
this
service
information
by
anyone
else
could
result
in
serious
injury
or
death
Technics
Question and Answer IconNeed help?

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Technics SL-BD22D Specifications

General IconGeneral
Drive SystemBelt Drive
MotorDC Motor
Turntable PlatterAluminum Die-Cast
Effective Arm Length230 mm
Overhang15 mm
Signal-to-Noise Ratio50dB
Power SupplyAC 120V, 60Hz
Speeds33 1/3, 45 RPM
Tonearm TypeStatic Balance Type
TypeBelt-drive turntable
CartridgeTechnics P-mount cartridge

Summary

SPECIFICATIONS

TURNTABLE SECTION

Detailed turntable specifications including type, drive method, motor, and platter.

TONEARM SECTION

Specifications for the tonearm, including type, length, and tracking error.

CARTRIDGE SECTION

Specifications for the moving magnet stereo cartridge.

GENERAL PRODUCT SPECIFICATIONS

Power Supply and Consumption

Details on voltage requirements, power usage, and dimensions.

Physical Dimensions and Weight

Overall product dimensions and weight specifications.

SAFETY PRECAUTIONS

Insulation Resistance Test

Procedure to test insulation resistance for electrical safety, essential before use.

ACCESSORIES INCLUDED

LOCATION OF CONTROLS

Turntable Operation Controls

Description of controls for speed, pitch, and cueing.

Playback and Stop Controls

Explanation of the stop switch, tonearm controls, and playback initiation.

Disc Placement and Playback

Instructions for placing a disc and the automatic return feature.

DISASSEMBLY INSTRUCTIONS - PART 1

Removing Cartridge and Stylus

Step-by-step guide to safely remove the turntable cartridge and stylus.

Removing Turntable Platter Assembly

Instructions for removing the dust cover, mat, belt, and platter.

Removing Bottom Cover and Controls

Procedures for accessing internal components by removing the bottom board and cueing knob.

DISASSEMBLY INSTRUCTIONS - PART 2

Removing Switch and P.C.B. Components

Guide to removing the stop switch knob and the drive P.C.B.

Removing Mechanism Plate

Steps to detach the main mechanism plate from the unit.

Removing Tonearm Assembly

Instructions for disconnecting and removing the tonearm and PU fixing plate.

DISASSEMBLY INSTRUCTIONS - PART 3

Removing Cueing Mechanism and Resistor

Procedures for detaching the cueing cam and magnetic resistor element.

ELECTRICAL CONNECTIONS

Power and Audio Signal Connections

Diagram showing how to connect the AC power cord and stereo cables.

MEASUREMENTS AND ADJUSTMENTS

Arm-Lift Height Adjustment

Procedure to adjust the tonearm lift height for proper cueing.

Automatic Return Adjustment

Steps to adjust the tonearm's automatic return function.

Speed Adjustment (Pitch Control)

Guide to adjusting and setting the correct turntable rotational speed.

Rotating Speed Calibration

Procedure for calibrating the 33-1/3 and 45 rpm speeds.

TROUBLESHOOTING - BASIC CHECKS

No Sound Output Diagnosis

Troubleshooting steps for audio output issues, checking resistance and connections.

Strobe LED and Rotation Issues

Diagnosing problems with the strobe indicator and turntable rotation.

Power Source and Drive Circuit Checks

Verifying voltages in the power source and drive circuits for fault finding.

TROUBLESHOOTING - ADVANCED DIAGNOSTICS

Unstable Rotation Diagnosis

Troubleshooting steps for unstable turntable rotation using waveforms.

Speed Fluctuation Diagnosis

Diagnosing issues causing fast or inconsistent turntable speed.

Static Electricity Precautions

Important safety guidelines for handling electronic components to prevent static damage.

SCHEMATIC DIAGRAM

Circuit Diagram and Voltage Points

Detailed schematic showing circuit layout and reference voltages.

Component Reference and Area Variations

Notes on component identification and area-specific part differences.

Cartridge Output Wiring Diagram

Diagram illustrating the wiring for the phono cartridge output.

CIRCUIT BOARD AND WIRING DIAGRAM

Main and Motor P.C.B. Layout

Wiring and connection layout for the main and motor circuit boards.

BLOCK DIAGRAM

Functional System Overview

Block diagram illustrating the functional units and signal flow.

EXPLODED VIEW OF COMPONENTS

Turntable Assembly Breakdown

Visual representation of the turntable's parts and their assembly order.

REPLACEMENT PARTS LIST - INTEGRATED CIRCUITS AND TRANSISTORS

Integrated Circuits (ICs)

List of integrated circuits used in the unit with part numbers.

Transistors

List of transistors used in the unit with part numbers and applicable areas.

Mechanism Parts Identification

Diagram and identification of key mechanism parts for replacement.

REPLACEMENT PARTS LIST - SEMICONDUCTORS AND PASSIVES

Diodes, Resistors, and Capacitors

List of diodes, resistors, and capacitors with values and part numbers.

Cabinet and Other Components

List of cabinet parts, variable resistors, and connectors.

REPLACEMENT PARTS LIST - MECHANICAL AND ACCESSORIES

Mechanical Components and Hardware

List of springs, knobs, gears, and other mechanical hardware.

Packing Materials and Accessories

Details on packing materials and included accessories.

PACKING AND SHIPPING INSTRUCTIONS

Unit Packing Procedure

Step-by-step guide for packing the turntable for shipping or storage.

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