Technics SLL 1 Service Manual

Page 1

Service Man

is the standard mark for the "P-mount" plug-in-connector
system. Products carrying this mark are interchangeable and compatible
with eaCh other.

SPECIFICATIONS

I Turntable section

Type: Direct drive
Automatic turntable
Features: Auto start/Auto lead-in.

Auto return.

Auto stop.

Forward search play.
Backward search play.
Repeat play.

Record presence detection
Direct drive

Brushless DC motor
Aluminum die-cast
Diameter 30 cm (12")
33-1/3 rpm and 45 rpm
0.012% WRMS'

0.025% WRMS (JIS 05521)
10.03595 peak

Drive method:
Motor:
Turntable platter:

Turntable speeds:
Wow and flutter:

I Tonearm section

Type:

Ellective length:
Tracking error angle:
Eltectlve mass:
Resonance lroquency:
Tonearm drlve motor.
Stylus pressure:
Applicable cartridge
weight:
Phono cable
capacitance:

I General

Power supply:
Power consumptlon:

ORDER NO. HA085032457C1
A2

Turntable System

SL-L1

Color
(8). . .Silver Type
Area

[M] ........ U.S.A. .
[MC] ...... Canada 3

Specifications are subject to change without notice for further improvement.
Weight and dimensions shown are approximate.

Linear tracking tonearm

4-pivot gimbal suspension m
10.5 cm (4-1/8")

Within t0.l°

9 9 (including cartridge)

12 Hz

DC mot0r

1.25 9 (Fixed)

69

150 pF

AC 120V, 60 Hz

to W

43 x 9 x 35 cm

(16-15/16" x 3-17/32" x
13-25/32")

(Maximum height when the dust
c0ver is open)

39 cm (15-11/32")

4.9 kg (10.8 lb.)

(IEC 98A Weighted) D'w'flznfo
'Measured by obtaining signal from built-in frequency ( )
generator of motor assembly.
Rumble: ~66 dB (IEC 98A Unweignted)
-78 dB (IEC 98A Weighted)
Weight:
Matauahlta Englneerlng and Panasonic "wall lnc.

Technics

Service Company
50 Meadowlano Parkway.
Secaucus New Jersey 07094

91-238 Kauhi St Ewa Beach
P 0 Box 77¢
Honolulu. Hawaii 96808-0774

Matauahlla Electrlc
ol Canada Llinlitad

S770 Ambler Drive. Mississauga

Onlano. UW 2T3

Panasonic Sales Company.
Dlvlalon ol Natauahlta Electric
01 Puerto Rico. Inc.

Ave. 65 De lnlanteria. KM 9 7
Victoria Industiial Park
Carolina. Puerto Rico 00630

Page 2

I CONTENTS

Page Page
SAFETY PRECAUTION ........................................ 2 RESISTORS AND CAPACITORS ............................ 12
LOCATION OF CONTROLS ................................... 3 REPLACEMENT PARTS LIST ............................ 13, 14
CONNECTIONS ................................................ 3 EXPLODED VIEW ....................................... 14 ~ 16
DISASSEMBLY INSTRUCTIONS .......................... 4 ~ 6 CIRCUIT BOARD AND WIRING
HOW TO SET THE TONEARM DRIVE ROPE ................ 7 CONNECTION DIAGRAM .............................. 17. 18
HOW TO REPLACE CHIPS .................................... 7 SCHEMATIC DIAGRAM ................................ 19 ~ 21
MEASUREMENTS AND ADJUSTMENTS ..................... 8 BLOCK DIAGRAM ........................................ 22, 23
TROUBLESHOOTING ................................... 9 - 11

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

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

2. When replacing parts, use only manufacturer's recommended components for safety.

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

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

5. 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.

o INSULATION RESISTANCE TEST

1. Unplug the power oordand 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 5.2M!) to all exposed parts. (Fig. Al 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.

ARIOIIIIR
terminal

Exposed Exposed
metal _ metal
part part
A m
CDOhmmeter ES 7 Ohmmeter
(FIOI A) (Fig.8)
Resistance = 3M9-5.2 M9 ReSistance = ApprOx co

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

Page 20

ORDER NO. HAD85052555A9

Service Manual

Turntable System

Direct Drive 8 L_ L1
Automatic Turntable System

Color

(8) ..... Silver Type
(K) Black Type

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

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

(S) (K) [EG] FR. Germany.
(S) (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.
m is the standard mark for plug-in-connector type. (S) (K) [PA] ' "' Far East PX .
Products carrying this mark are interchangeable and adaptable (S) (K) [PE] -- European Military.
among each other. (8) (K) [PC]. .. . European Audlo
Club. J

Please use this manual together with the service manual for Model No. SL-L1 [M],
Order No. HA085032457C1.

SPECIFICATIONS

I Turntame section Wow and flutter: 0 012% WRMS'
Type: Direct drive 0 025% WRMS (JIS 05521)

Automatic turntable jggfigz ank
Features: Auto start/Auto lead-in. ( eighted)
Auto return 'Measured by obtaining Signal irom built-m trequenCy

Auto stop generator of motor assembly.
Forward Search may Rumble: 56 dB (IEC 98A Unwelghted)
Backward search play. 78 dB (IEC 98A Weighted)

:epeat play. I Tonearm section
ecord presence detection . '
Drive method: Direct drive Type. tigffg 21:22? stfsnpeggon
Motor: Brushless DC motor Ettective length' 10 5 cm
Turntable platter: Aluminum die-cast Tracking error angle Within :0 10

Diameter 30 cm Eflective mass: 9 9 (including cartridge)
Turntable speeds: 33-1/3 rpm and 45 rpm

Resonance trequency: 12 Hz

Matsushita Electric Trading Co., Ltd. Panasonic Tokyo Ottice

O
p 0 Box 288. Central Osaka Japan Matsushlta Electric Trading Co.. Ltd.
1-2. 1-chome. Smbakoen, Mmatodw. Tokyo 105. Japan