Technics SLL 3 Service Manual

Page 1

Gum-12 Direct Drive
Fully Automatic Turntable System

ervice Man

ORDER NO. HA08504248901

Turntable System

SL- L3

Color
(8). . .Silver Type
Area
[M] ........ U.S.A.
[MC] ...... Canada

ID 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

I Tonearm section

Type:

Features:

Drive method:
Motor:

Drive control method:

Turntable platter:

Turntable speeds:

Wow and flutter:

Quartz direct drive
Automatic turntable system
Auto start/Auto lead-in.
Auto return/Auto stop.
Repeat play.

Program play.

Direct music select play.
Forward and backward skip play,
Forward and backward search play.
Auto size select.

Record presence detection
Direct drive

Brushiess DC motor
Quartz-phase-iocked control
Aluminum die-cast

Diameter 30 cm (12")

33-1/3 rpm and 45 rpm

Auto speed select

(Manual selection possible)
0.012% WFiMS'

0.025% WRMS (JIS 05521)
i0.035% peak

(iEC 98A Weighted)

Measured by obtaining signal from built-in frequency
generator oi motor assembly

Type:

Eiiective length:
Tracking error angle:
Etiective mass:

Resonance irequency:

Tonearm drive motor:

Applicable cartridge
weight:

Stylus pressure:

Phono cable
capacitance:

General

Power supply:
Power consumption:
Dimensions:

(W X H x D)

Weight:

Linear tracking tonearm

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

Within :0.1°

9 9 (including cartridge)

12 Hz

00 motor

6 9
1.25 9 (Fixed)

150 pF

AC 120 V. 60 Hz

16 W

43 X 9 X 35 cm

(16-15/16" x 3-17/32" 7'
13-25/32")

(Maximum height when dust
cover is open)

39 cm (15-11/32")

5.2 kg (11.5 lb.)

Rumble:

Speciiications are subject to change without notice for further

~56 US ("so 98A Unweighted)
-78 dB (rec 98A Weighted)

improvement.

Technics

Weight and dimensions shown are approximate.

Maiwshlie Engineering

and Service Company

50 Meadowiand Parkway.
Secaucus, New Jersey 07094

Panasonic Hawaii inc.
91-238. Kent" St. Ewa Beach
PO. Box 774

Honolulu. Hawaii 96808-0774

Matsuahita Electric
at Canada Limited

5770 Ambler Drive. Mississauga.

Ontario, L4W 2T3

Panasonic Saiea Company.
Division oi Maiaushita Electric
oi Puerto Rico. inc.

Ave. 65 De inianteria. KM 9.7
Victoria Industrial Park
Carolina. Puerto Rico 00630

Page 2

I CONTENTS

Page
LOCATION OF CONTROLS ............................... 3
DISASSEMBLY INSTRUCTIONS .......................... 4
HOW TO SET THE TONEARM DRIVE ROPE ............... 7
PLAYING NON-STANDARD AND SPECIAL RECORDS
AND MAKING ADJUSTMENTS .......................... 8
MEASUREMENTS AND ADJUSTMENTS .................. 10
TROUBLESHOOTING ................................... 12
EXPLODED VIEW ........................................ 15

Page
REPLACEMENT PARTS LIST ............................ 17
RESISTORS AND CAPACITORS ......................... 19
HOW TO REPLACE CHIPS ............................... 20
CIRCUIT BOARD AND WIRING
CONNECTION DIAGRAM .............................. 21
SCHEMATIC DIAGRAM .................................. 23
BLOCK DIAGRAM ....................................... 27

I SAFETY PRECAUTION (This "safety precaution is applied only in U.S.A.)

.UPWN."

INSULATION RESISTANCE TEST

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

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.
all exposed parts. (Fig. 8)
Note:

Antenna
terminal

Exposed
metal
part
A
VOhmmeter
(Fig. A)

Resustance = 3MQ-5.2 MQ

Exposed
metal

part

(Fig. A) EQuipment without antenna terminals should read approximately infinity to

Some exposed parts may be isolated from the ChaSSIS by design. These will read infinity,

ReSistance : 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.