Technics SLBD 2 Service Manual

Page 1

ORDER NO. HA08503243609

Service Manual

Automatic Turntable System

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

(E is the standard mark for the "P-m0unt plug-in-connector
system. Products carrying this mark are interchangeable and compatible

with each other.

SPECIFICATIONS

I Turntable section

Type:
Features:

Drive method:

Motor:

Drive control method:
Turntable platter:
Turntable speeds:

Wow and flutter:

Rumble:

I Tonearm section
Type:

Ellectlve length:
Overhang:

Technics

Semi-automatic turntable
Auto return

Auto stop

Belt drive

DC motor

Frequency generator
servo control

Aluminum die-cast
Diameter 31.2 cm

33-1/3 rpm and 45 rpm
0.045% WRMS (JlS C5521)
t0.06% peak

(IEC 98A Weighted)

-70 as (IE0 98A Weighted)

Statically balanced straight
tonearm

Plug-in connector cartridge
System

230 mm

15 mm

Turntable System

SL-BD2

Color Area
(8). (K) [E] ....... Switzerland and
Scandinavia
(S). (K) [EK] ..... United Kingdom
(S), (K) [XL] ..... Australia

(8). (K) [EG] .....F.Ft. Germany
(8). (K) [EB] ..... Belgium
(8). (K) [EH] ..... Holland

(S). (K) [EF] ..... France

(8). (K) [Ei] ...... italy

(8). (K) [EC] ..... Czechoslovakia

(S). (K) [XA] ..... Southeast Asia. Oceania.

Africa, Middle Near East
and Central South America

(S). (K) [PA] ..... Far East PX
(S), (K) [PE] ..... European Military
(S). (K) [PC] ..... European Audio Club

Panasonic Tokyo Ottice
MatSushita Electric Trading Co., Ltd.

Tracking error angle:

Ettecttve mass:
Stylus pressure:
Applicable cartridge

Within 2°32' at the outer groove
of 30 cm record

Within 0° 32' at the inner gr00ve
of 30 cm record

13.5 9 (including cartridge)

1.25 9 (Fixed)

weight: 6 g
Phono cable
capacitance: 90 pF

a Cartridge section

Type:

Magnetic circuit:
Frequency response:
Output voltage:

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

1-2. 1-chome. Shlbakoen, Minatoku. Tokyo 105 Japan

Moving magnet stereo cartridge
All laminated core

10 Hz ~ 35 kHz

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 kQ~100 kn
12X10'6cm/dyne at 100 Hz
12510.25 9 (125:2.5 mN)
6 g (cartridge only)
EPS-3OCS

Matsushita Electric Trading Co., Ltd.

P O. Box 288. Central Osaka Japan

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Dimensions: 43 X 9.3 X 37.5 cm

I General . . (WXHXD) Maximum height when
Power supply: For United kingdom dust cover is open.
and Australia: 240V. AC 50 Hz 43 x 36 x 41 cm
Figg'gflima' E'°pe' 22 Weight: 3.6 kg (7.9 lb.)
For others: ~110-127/220-240V.
AC 50/60 Hz
Power consumption: 3 w Specifications are subject to change without notice for further
improvement.
Weight and dimensions shown are approximate.
I CO NTENTS

Page

SAFETY PRECAUTION .......................................................................................... 2

LOCATION OF CONTROLS ................................................................................... 3

DISASSEMBLY INSTRUCTIONS .......................................................................... 3 ~ 5
MEASUREMENTS AND ADJUSTMENTS .................................................................... 6

SCHEMATIC DIAGRAM ....................................................................................... 7, 8

BLOCK DIAGRAM ...................... . ........... . ............................................................. 7

CIRCUIT BOARD AND WIRING CONNECTION DIAGRAM ............................................. 9
TROUBLESHOOTING ............................................. . .......................................... 9, 10

OPERATIONAL DESCRIPTION OF MECHANISM ......................................................... 11

EXPLODED VIEW ........................................................................................... 12 ~ 14

REPLACEMENT PARTS LIST .............................................................................. 15. 16

I SAFETY PRECAUTION (This "safety precaution is applied only in USA.)

Before servicing, unplug the power cord to prevent an electric shock.

When replacing parts, use only manufacturers recommended components for safety.

Check the condition of the power cord. Replace if wear or damage is evident.

After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to
prevent the customer from being exposed to a shock hazard.

@PPNT

e INSULATION RESISTANCE TEST

1. Unplug the power cord ,and short the two prongs of the plug with a jumper wire.

2. Turn on the power switch.

3. Measure the resistance value with ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such as
screwheads antenna, control shafts. handle brackets, etc. Equipment with antenna terminals should read between 3M9
and 5.2MQ to all exposed parts. (Fig. A) Equipment without antenna terminals should read approximately infinity to
all exposed parts. (Fig. 8)

Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.

Antenna
terminal

Exposed Exposed
metal metal
98" part
Resistance = SMQ-5.2MQ Resustance 2 Approx 00

4. If the measurement is outside the specified limits. there is a possibility of a shock hazard. The equipment should be
repaired and rechecked before it is returned to the customer.

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