Technics SLBD 21 Service Manual

Page 1

ORDER NO. HAD 8506257208

Service Manual

Automatic Turntable System

Turntable System

SL-BD21

Color

(S) ..... Silver Type
(K) Black Type

Color Areas
(8) (K) [E] ..... Switzerland and i
Scandinavia. 2

(S) (K) [EK].... United Kingdom.
(S) (K) [XL] Australia.

(S) (K) [EG] FR. Germany.
(8) (K) [EB].... Belgium.

(S) (K) [EH].... Holland.

(8) (K) [EF] France.

(8) (K) [Ei] ..... Italy.
(S) (K) . [EC].... Czechoslovakia.
, (S) (K) : [XA] Southeast Asia.

i L12] is the standard mark lor plug-in-connector system. Products
carrying this mark are interchangeable and compatible with each other.

SPECIFICATIONS

I Turntable section

Type: Automatic turntable
Auto return
Auto stop

Drive method: Belt drive

Motor: DC motor

Drive control method: DC servo controll

Aluminum die-cast
Diameter 31.2 cm
(12-9/13")

33-1/3 rpm and 45 rpm
0.045% WFiMS (JlS 05521)
$00696 peak

(IEC 98A Weighted)

» 70 d8 (IEC 98A Weighted)

Turntable platter:

Turntable speeds:
Wow and flutter:

Rumble:

I Tonearm section

. Oceania. Africa.
Middle Near East
and Central South
America.

I Cartridge section

Type:
Magnet circuit:
Frequency response:

Output voltage:

Channel separation:
Channel balance:
Recommended load
impedance:
Compliance (dynamic):
Stylus pressure range:
Weight:
Replacement stylus:

Type: Statically-balanced straight . General
tonearm
Plug-in connector cartridge Power supply:
system

Ettectlve length: 230 mm (9-1/16")

Overhang:
Tracking error angle:

Ettective mass:

Stylus pressure:
Applicable cartridge
weight:

15 mm (19/32")
Within 2°32 at the outer groove
of 30 cm (12") record

Within 0°32' at the inner groove Power consumption:

at 30 cm (12") record Dlxgfli'g)
13.5 9 (including cartridge)

7.5 9 (without cartridge)

1.25 9 (Fixed) Weight'

59

Moving magnet stereo cartridge
All laminated core
10 Hz~30 kHz

20 Hz~10 kHz : 1 dB
2.5 mv at 1 kHz. 5 cm/s. zero to

peak lateral velocity

(7 mV at 1 kHz. 10 cm/s. zero to
peak 45° velocity |DIN 45 500]
22 dB at 1 kHz

Within 2 dB at 1 kHz

47 k0~ 100 k!)

12x106 cm/dyne at 100 Hz
12510.25 9 (12512.5 mN)
6 g (cartridge only)
EPS-24CS

For United Kingdom
and Australia: 240V AC. 50 Hz

For continental Europe: 220V
AC. 50 Hz

For others: 1 10-127/220-240V,
AC 50/60 Hz

2w

43X9.3x37.5 cm

Maximum height when dust

cover IS open.

43X36X41 cm

3.6 kg (7.9 lb)

Specifications are subject to change without notice for

further improvement.

Technics

Matsushita Electric Trading Co., Ltd.

PO. Box 288. Central Osaka Japan