Technics SL 1400 Mk2 Service Manual

Page 1

ORDER NOA 8077094274

Service Manual

QUARIZ Synthesizer

Direct Drive Automatic Turntable System

SL-14OOM K2 (M.MC)

- The model SL-MOOMKZ (M) is available in America only.
0 The model SL-idOOMK? (MCl is available in Canada only.

i

SPECIFICATIONS

General
Power supply

(Snergrlrmlrrnis are SLIDIQCI to change Without notice i0! lur the! improvement)

Speed drift r."'."iIllin 0 0023

AC 120 V_ 50 m 60 Hz Wow and flutter 0.0251 V'.RI\'lS iJlS Cbell

Power consumption 1 2 W

Dimensions 14 5 x 453 x 38 4 cm
(H x W x D) l5-45r64 x l7-4ir6/l x 15-7564
llthPS)
Weight ll 8 W (26 0 lb}
Turntable section
Type Orrdli/ phase-locked control direct

rir we. dirtor'natrr'. turntable wrth
Irrmrtz Synthesizer pitch control.
Aotonratrr return. and Manual play

Drive method

Motor

Drive control method
Turntable platter

Drier} Drive

Brrrshless DC motor

Qurlrl/ nhawlocked control

Aluminum die-rest, diameter 33 cm

r13"), weight 2 5 kg (5.5 mi

340 in; (Am2 (116 lb rnz)

33133.1nd4br porn.

Adjustable rm to 19 9'15 In 0 lZ-n
adjustment rni rernerits by digital indication

Starting torque l 5 Ha (rn (l 3 lb rnl

Build-up characteristics 90J m 14 rotation to 334/53 rpm

Braking system E lLlHJHIL brdki

Speed fluctuation due 0. within I b kgecm 11.3 H) in)
to load torque

Moment of inertia
Turntable speeds
Turntable speed fine

Rumble

Tonearm section
Type

Effective length
Overhang
Tracking error angle

Offset angle
Friction
Effective mass

Tonearm height adjust-
ment

Adjustable stylus
pressure range

Cartridge weight range

Cartridge mounting
dimensions

Headshell terminal lug

Headshell weight

:0 035m rvurqhtrisd xero to nmk
(DIN ASSON
50 d B If DI \l 4 MFGQA!
473118 rDW 455398:
(3|l?i)(ll sirsrnfnrlvsd rrnrviistrl S
shaped irrhlrrar arrr. Stdlu'brildiucd
WP"
230 'll"l IE) 1'16")
1) r'ni I19 32"i
t3G at the I'JllIPf ririxwe of 30 (Hr
l l?"l rm (mi
+11; at 101llllltt'llifljijJBUf 30 r rn
l 12? in: (mi
21 5
Less Thrrn 7 nurr (lateral, w-rtr: all
22 L} (filth a 1.74: tr irigu mrghrrrg (j g
at 1 Zing SlxrioSlJWSSulrJl
1 HM steps a range at i3 rr m

032;

511 fl

l2 7 n llr Hi 2") niourrtrrrri error I:
32 WW. tor :1 irrn lI-rr'nrriil
9.59

(Weights and dllTlUnSlOllS shown are approximate.)

Panasonic Company Matsushita Electric 01 Hawaii. Inc. Matsushita Electric of Canada Ltd,

Technics

byPanasonic

Division of Matsushita Electric
Corporation of America

One Panasonic Way, Secaucus.

New Jersey 07094

320 Waiakamilo Road, Honolulu.
Hawaii 96817

40 Ronson Drive. Rexdale.
Ontario. Canada M9W 185

Page 2

I FEATURES

Encounter two separate isolation stages. The first stage
effectively damps out harmful external vibrations which
may reach the unit through its resting surface. The all-
important turntable, motor and tonearm assembly are
then supported on a second isolation system. These
isolators are specially designed with material and springs
of calculated, finely-tuned elasticity to absorb external
vibrations.

Isolation from feedback lets you enjoy clear, transparent
sound even at high volume levels.

Technics unique motor construction in which the rotor
of the motor is integrally formed with the turntable.

High torque motor delivering1.5kg-cm makes it possible
to reach 33-1/3 r.p.m. from standstill within 0.7 sec.
(1/4 rotation) and to effect instantaneous speed change.
(Fig. 1).

Superior load characteristic of 0 rotational deviation
even at a stylus pressure of 300 9. (Fig. 2).

High perfOrmance with wow and flutter of only 0.025%
lJIS C5521) and rumble of -73 d8 (DIN 455398).
Since the development of the DD turntable, Technics
has continually strived for further improvement of
player performance and has introduced numerous high
performance models on the market.

The SLv1400MK2 series is brought into being by com-
bination of experience and research.

The characteristic values of rumble -73 dB (DIN
455398) and wow and flutter of 0.025% (W.R.M.S JlS
C5521) by far exceed the standards to which record
albums are made.

Build-up Time
so

dfirpm

E
5 3° 33 lrJr n m
0
i
I
3 20

to

0 05 to 1 I-h

Time lsul J
Fig. 1

Speed anl

some on" ("H

Q) SL-1400MK2

_. .30. . _.
Time lmml

Quartz Controlled Rotation Accuracy

The SL-1400MK2 utilizes the oscillation of a quartz cry-
stal as a reference signal or source, This oscillation is not
affected by temperature change or power fluctuations.
By synchronizing the rotation of the turntable platter
accurately to the reference signal, speed drift of the SL-
1400MK2 is held within :0.002%. This means that for a
rec0rd with a playing time of 30 min, total playing time
variation can amount to no more than 0.036 sec. This
stable and accurate rotation sets a new standard of pre-
cision,

The accuracy under controlled operating conditions as in
a listening room is about 10.000010?» as shown in Fig. 3.

Highly sensitive universal tonearm.

For the finest tracking sensitivity, the tonearm rests in a
gimbal suspension equipped with two pairs of low fric-
tion pivot bearings. Gimbal suspension and low tonearm
mass means that accurate tracking is possible at tracking
forces as low as 0.25 grams. With enhanced rotational
sensitivity of 7 mg. the tonearm is allowed free, gyro-
scopic movement to ensure flawless balance during
tracking. The longer-thansusual effective tonearm length
(9-1/16" or 230 mm, stylus to pivot) contributes to the
arms low tracking error, and this in turn facilitates the
design of the anti-skating control for precise and reliable
tracking. With this design, a single precise anti-skating
scale counteracts side thrust for all types of styli.

Arm height is adjustable within a range of 6 mm to ac-
comodate varying cartridge dimensions.

Resonance dampened headshell with unique overhang
adjuster.

Low capacitance phonocables.

Load Characteristics

0

30 334 :tr 0 m

salad 0 I) I l

20

t0-

65 lo 15

(unit "Nu-l! (ha cml

Fig. 2