BIC 940 Manuel utilisateur

@OO Muftiple Ptay Manuat rurntabtes

Bert Drive O Moder r-rlffi'i; Xl3ll

Features of B'l'C Model 940 Multiple Play Manual Turntable

1 Cycie button-feather touch

conirol activates all turntable

:lurrCtiOns

2" Tcnearm f inger lift-human-

engineered f or positive, secure

rnanual handling of tonearm.

3. Program-selects manual or

automatic operation, shut-off

and number of plays.

4 Cartridge shell retaining screw-

locks shellfirmly in place.

5, Tonearm rest-extended for

stylus and cartridge protection.

6. Tonearm lock-prevents damage

during transport or accidental

jarring.

7. Speed selector-shifts drive belt

f or 331/z rpm or 45 rpm rotation.

B. Tonearm set-down adjustment-

adjusts set-down position of stylus

at edge of record.

9. Cueing lever-initiates safe,

damped lowering or raising of

tonearm or can be used as

pause co ntrol.

1 0. Anti-skate f orce ad justment knob

-sets correspond ing a nti-skate

f o rce.

11. Tracking force indicatol-sslg

desired tracking force f rom 0 to

4 grams.

12. lsolated tonearm counterweight

permits dynamic zero balancing ot

entire tonearm, while insuring

maximum damping

13 Precision gimbal bearings-for

minimal ho rizontal and vertical

pivotal f rictio n.

14. 12" diecast platter-solid, one-

piece precision casting has

computer optirnized mass.

15. Removable manual spindle,

1 6. Automatic spind le-su pports

records duri ng automatic

record play

17 . Record support-platform

stabilizes records placed on

spindle for safe two-point

support during automatic play.

18. Elastomer suspension mounts

-correlated to the mass of the

turntable assembly for maximum

isolation from external shock

in all planes.

19. Synchronous 24 pole motor-oper-

ates at slow, vibration-free 300 rpm.

(18 and 19 pertain to underside of unit not shown)

The B.l.C Multiple Piay Manual Turntable

represents the culmination of many years

of engineering design effort directed

towards the development of a superior

rnanual turntable equipped with auto-

matic, multiple record playing facilities.

Its drive system utilizes a slow speed

(300 rpm) 24 pole synchronous motor,

and belt drive, previously found only in

fine manual turntables.This results in

significantly reduced rumble, wow, and

flutter since idler-pulleys are totally

eliminated The Model 940 maintains

precise speed over a wide ran ge of power

line voltages, since its motor's rotational

rate is determined solely by power line

f requency (50 Hz or 60 Hz).

The tonearm system features minimal

friction bearings, low mass and

resonance, stylus force, and tonearm

balancing and an isolated counterweight

to maintain optimal tracking force from

the first to last record played. Another

exclusive feature, a pivotable cartridge

shell, permits easy cartridge installation.

The programmer system eliminates the

i n herent shortcomings of conventional

turntables because its action is inde-

pendent of erratic spindle-sensing

mechanisms or di mensional variations

of records. The programmer allows for

totally manual play or automatic play of

single records, repeat playing of single

records, programmed pl?y of up to six

records, or automatic play of multiple

records with programmed repeatability of

the last record, all by means of a single

touch button.

The suspension system has been

designed to prevent mechanical or

acoustic vi bration coupli ng, thereby

permitting you to take f ull advantage of

the wide dynamic musical range now

available in modern disc recordings.

lndex

Set-Up How to properly unpack the unit

Procedures Note the accessories supplied

lnstalling the turntable on the base

Proper mounting of the cartridge in the tonea'n'^ s^eil

lnstalling the counterwei ght

Adjusting proper tracking and anti-skate fcrces

lnstallation of audio cable and ground ccn"ec:to'r

Connecting to AC power

Operating Man ual play of a single record

Procedures

There are many playing and

operating options built into

your B.l.C Multiple Play

Manual Turntable, plus a

number of unique control

features. These are sum-

mari zed on th is page - and

specific operati n g instruc-

tions for the various playing

options are detailed on the

pages indicated. Normal

mai ntenance proced ures

are also described and

listed, along with a set of

specifications which will be

of interest to the audio

enth us iast.

Programmed repeat play of a single recoi'C

Automatic play of a single record

Autonnatic play of multiple records

Multiple play of records plus repeat of last recorC

Use of cueing and pause control

Adjustnnent of stylus set-down point and tonearrr height

Tips on record care

Spare parts list

G en eral specifications

PAGE

Turntable removal 12

Drive belt installation 12

Lu brication i nstructions 13

Accessories 13

Trou ble-shootin g hints 15

Set-LJp Procedures

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Unpacking the Unit

Remove the unit from the bottom styrofoam filler by grasping the

unit plate at the points indicated on the top cardboard packing

piece. DO NOT lift the unit by grasping the tonearm. Whenever

possible, the packing material should be retained in the event re-

shipment is necessary. ln any event, do not discard the packing

material until all of the accessories described below are accounted

fo r.

The top styrofoam filler contains the following:

1 A short manual spindle for playing single records

2, A long automatic spindle for playing up to six records automatic-

ally.

3. Tonearm counterbalance weight,

4. A manual 45 rpm adaptor for playing large hole records, one at a

time.

5. Cartridge mounting hardware; this contains the various screws

that are needed for mounting the cartridge in the pickup head.

6, Transit wing nuts (2)

7 . Extra tonearm shell lock screw.

B. Screwdriver

Also, make certain that all rubber bands securing the line cord,

audio cables, the tonearm tie, etc,, are removed along with all other

packing pieces.

Packing pieces are installed between the unit plate and turntable.

They must also be removed and, if possible, should be retained as

they are avery important part of the packing if the unit is ever

shipped

The audio cable is packed in a wedge on the right side of the unit.

lnstalling the Unit on the Base

Both the 820 Base and WB20 Base are supplied with a bottom

safety cover which eliminates any possibility of mechanical hazard.

Comprehensive instructions are included with each base.

PROPER INSTALLATION IS EXTREMELY IMPORTANT DO NOT

INSTALL THIS UNIT ON ANY DEVICE OTHER THAN THE OFFICIAL

B2O OR WB2O BASES

Cartridge Installation and Adiustment

ln order to take advantage of the many

features of the B.l.C tonearm, it is ex-

tremely important that the cartridge be

properly installed and th e various

adjustments pertaining to the cartridge

be made. These are described below.

Rotation of the Cartridge Head

All turntables use some form of cartridge

slide or clip to pre-mount the cartridge

and fasten it to the arm. Electrical contact

for transmission of the minute cartridge

signals depends on four surface-to-

surface contacts, any one of which may

cause intermittent signals or open

circurts. The B.l.C 940 employs a rotating

pickup head which is rigidly iocked in

place by a set screw lccated on the top

of the tonearm, (Fig A) Rer.nove the set

screw and rotate the pickup head counter

clockwise BE SURE NOT TO LOSE CR

MISPLACE THE SET SCREW IN THE

EVENT THIS OCCURS, AN EXTRA

SCREW HAS BEEN SUPPLIED THE

CARTRIDGE HEAD IS NOT REMOVABLE

AND DAMAGE CAN OCCUR IF IT IS

PULLED FORWARD

Mounting Cartridge in Head

The B.l.C 940 is supplied with several

sets of varied length cartridge rnounting

screws. lt is important that the rnounting

screws used are the correct len gth

ln most cases the mounting screws

supplied by the cartridge manufacturer

should be used. However, if you do not

have these screws, proceed as follows:

From the sets of screws supplied with

the B.l.C 940, select the screws that

appear to be the proper length to pass

through the cartridge mounting bracket

Place one screw through the bracket, To

make certain it is not too long, place the

bottonn of the cartridge as shown in the

diagrarn below and note whether the

screw projects below the simulated

pickup head rnounting bracket lf too

long, use the next shorter screw, When

the correct length has been selected, use

a srnall screwdriver to secure both

screws to the pickup head (Fig B)

Pl ace

Cartridge

Botto m

Here

Th ic k ness

Fig. B

Wiring Cartridge

The chart (Fig C) illustrates the

markings at the rear of a typical cartridge.

MAKE CERTAIN that the cartridge is

wired as per the following diagrams,

@-o O

o-@ - Left Grd

Irrir re - Right Grd.

,', '3 _ Left Hot

'. - Right Hot

Fig. C

CAUTION-Never solder directly to the cartridge.

DAMAGE WILL OCCUR.

IMPORTANT WARNING

Tc i:rSUi'e r'ra;<lrr.un iraC<irg capabiIity,

t^e :oi'earm,','' ng ia'ness containing

t^e ca'-.'clg cl-^ec:c's rs nrade of

speciai i.git arge lc',,/ friction wire.

Alt^o-g. t'e cortnections are carefully

mace. special care nnust be taken to

avc;C oreakrr g tre press-on cartridge

ccnnectcis \,viile installing the cartridge

ln stallin g

Grasp the ccn nector in th e cenler with a

pair of tr,veezers or needle nosed pliers.

Caref ully press the connector on to the

pin of the cartridge lf you have difficulty

sliding it on all the way, place a small

screwd river at the point shown in the

diagrarn and gently push the connector

in place

Do not attempt to install the connector

with your fingers, Tweezers or long nosed

pliers must be used. The wire or where

the wire joins to the connector must not

be touched.

Removing

Place a screwdriver between the car-

tridge connector and the rear of the

cartrldge. S/ide the press-on connector

off the cartridge pin Do not use tweezers

or long nosed pliers to remove the

cartridge connector. lf you attempt this,

the removal tool may slip from the

connector and f racture one of the wires.

WE STRESS THAT IF THE INSTRUC_

TIONS ARE NOT CAREFULLY

FOLLOWED AND THE CARTRIDGE

CONNECTORS ARE BROKEN, THE

REPAIR OF THE UNIT WILL NOT BE

COVERED UNDER WARRANTY

Gartridge G rounding Strap

The tonearm ground of the 940 is carried

up to the metal plate in the tonearm head.

With some cartridges a ground loop can

occur-if this difficulty is encountered,

remove the grounding strap f rom the

cartridge. Consult the cartridgd

manufacturers instructions regarding

removal of the ground strap.

Re-positioning Pickup Head

After the cartridge has been correctly

installed in the head, rotate the shell

clockwise so that the hole which receives

the screw becomes visible. Replace

the set screw and tighten f irmly.

Counterweight I nstallation

The counterweight should be installed

on the tonearm in the following manner.

Place the counterweight at the end of the

tonearm, with the numbers facing forward,

and rotate it in a counter-clockwise

direction (Fig D). The counterweight

must be installed and taken off the

tonearm by a winding action ONLY, not

by directly pushing or pulling. Rotate the

platter in a clockwise direction approx-

imately 5 turns to make certain that the

mechanism is f ree and the unit is not in

cycle. Also, make certain that the cueing

lever is in the play position. With the

tonearm released from its locked position

and anti-skate knob set to "0" (zero),

continue to rotate the counterweight

until the tonearm is perf ectly balanced,

f loating parallel to the turntable. When

this is accomplished, the tonearm will be

approximately level to the extension of

the tonearm pickup rest.

Setting VTF : Vertical Tracking Force

(Stylus Pressure)

The top of the tonearm tube contains a

reference line. Rotate the black VTF Cisc,

(not the entire counterweight) , uttil "0"

lines up with its reference line, Rotate the

entire counterbalance weight by grasp-

ing the knurl at the rear in a counter-

clockwise direction. The VTF disc will

move with the counterbalance weight,

Turn the counterweight until the VTF

recomrnended by the cartridge r"nanu-

facturer corresponds with the reference

line ln order to set the VTF higher than

2 grams, the counterbalance weight will

have to be rotated more than one f ull

turn and the numbers in red indicate

the pressure (Fig. A) .

Setting Anti-Skate Force

Set the anti-skating force knob to the

number of grams recommended by tf^re

manufacturer of your cartridge (Fig. B).

The forces shown on the controt panel are

calibrated for elliptical styli, For conrcal

styli, set the knob approxinrately 2CCo

less than for an elliptical type, Example:

lf VTF is 21/z grams set anti-skate fcr-

2 grarns.

Connecting Your B.l.C Model 940

Turntable to an Audio Amplif ier

Audio Cable

The Model 940 is supplied with a double

ended color coded audio cable This

cable was selected to provide minimui-n

capacitive loading effects on high fre-

quency response of your cartridge. This

is especialiy important if your cartridge is

capable of playing CD-4 discrete four

channel recordings. lf longer cables are

required, rnake certain they are of a lclv

capacity type or check with the man u-

facturer of your cartridge for his reccrn-

mendations regarding cable type and

length limitations.

--'1,a .-g ca: 3 arc insert one of

:-3 : rls -.: .-3 :-iio sccket marked

:^3 :--=- l: :r C -l l-t:'ine SOCket

*?^'/=: ','?<e cgr:a n t^e plugs are

:'3SS3l ? --2:,'.?';'

:c:l .-3 ca: e I "e oord and black

J': -.-t :al .^rt- - .-e base as shown

:^ .^3:as: -s.'_:: l^ s^eet.

ll- :,':.e pi:ig gcing to ((R'i

^s:'-,--ne sarne color at

^11, .-e r jlt channel of the

,', :^e sar. e procedure for

Amplifier Connections

,' ., la a'= -.< ^ j a n'tagnetic phono

ce-.",o t3 ^sert the phono plugs into

.-3 sca:: D'o',,'ided at the rear of the

a-t i ?, r'rarkeC ''phono low level" or

phcnc MAG'' (Fig D)

lf you are using a ceramic cartridge,

insert the audio cable plugs into the

high level input of the amplifier

"phono CER. "

The ground wire supplied with the

tu rntable should be connected to a suit-

able "ground" point on the metal

chassis of you r amplif ier. Most am-

plifiers provide a convenient terminal

on the rear panel for this purpose. Fail-

ure to ground this wire will result in an

inordinately high hum level when

attem pting to play records

Power Cord Connection

Your model 940 is designed to operate

f rom a supply voltage of 1 05 to 130 VAC

60 Hz (50 Hz adapter available). Con-

nection of the power cord to a higher

source of voltage or to a DC power

source willcause immediate damage to

the unit and is not covered by the

warranty. lf you use this product in

areas powered by 220 or 240 volts, con-

sult your dealer for proper instructions

regarding adaptation of the unit for

such use.

With the programming lever set to the

OFF position, plug the power cord

into a suitable outlet Many amplifiers

provide convenient receptacles on their

rear panels, to which the tu rntable

power cord may be connected (Fig. A)

Often, these receptacles are labelled

"SWITCHED" and "UNSWITCHED".

Choose an "UNSWITCHED" receptacle

for powering the turntable. By so

doing, rf you shut off the amplifier, the

tu rntab le wil I co ntin u e to rotate u nti I its

selected programming sequence is

com pleteci

Operating Procedures

Before attempting to play records, make

certain that the tonearm retaining lock

(Fig B) on the tonearnr rest is loosened

by moving it to the right with forefinger.

Most cartridges are f itted with a stylus

guard or protective cover. Make certain

this cover is removeC or pivoted so as to

expose the stylus tip

Set the speed selector lever (Fig C)

for the type of record you wish to play

The Model 940 plays 1 ztt 33 rpm records

when the s peed selector lever is set for

33', 7't 45 rpm reco rds when set to 45.

When playing a 45 rpm record, install the

man ual 45 rpm adaptor over the manual

spindle, which should be placed in the

center hole of the turntable. An optional

multiple play 45 rpnr adaptor is available.

Place this adaptor over the autornatic

spindle to play up to six records. (See

page 1 0)

Manual Play of a Single Record

lnsert the manual spindle (Fig D) and

move the prog ram rner control knob

(Fig. E) to the man ual position. The

turntable should begin to rotate at the

selected speed. Carefully lift the tone-

arm by means of the tonearm f inger

lift, and place it on the record After

the record has been played, the tone-

arm will return to the tonearm rest and

the unit will shut off You may also

use the cueing lever while playing

single records manually. For use of

this feature, refer to page 1 1 . lf you

wish to discontinue playing in the mid-

dle of a record, depress the cycle button.

The tonearm will return to its rest,

and the unit will shut off . Alternatively,

you rnay lift the tonearm from the record

and manually return it to the rest The

turntable should then be turned off by

moving the programming lever to the

OFF position.

DC NOT MOVE THE PROGRAMMER

WITH THE TONEARM ON A RECORD

Repeat PIay of a Single Record

Here is another B.l.C f eatu re: lf you

would like to hear one twelve-inch record

played three times (Fig A), simply

advance the programmer to the number

3. With the tonearm on the picku p rest,

depress the cycle button and the unit will

play the record three times and shut off

Automatic Play of a Single Record

To play a single record automattcail','

advance the programmer to the nu--be'

1 setting and depress the cycle buticr

(Fig B) This cycle button initiates tctally

autonratic operation. The arrn rises.

comes to the edge of the record anC is

gently lowered.

At the end of record play, the ic,reai'i:r

returns to the rest and the rnachine

automatically shuts off . lf you rnove

the prograrnmer to the nurnber 1

setting and place the tonearnn on the

record, the unit will not shut off at the

end of the record, but will continue to

play the record one more tir"ne

Turning Off the Unit

The u nit can be tu rned of f at any time

in one of two ways:

The cycle button can be depressed to

advance the programming cycle to

the next lower program number until

the " MAN " position is reached,

Depressing the cycle button once again

willcause the tonearm to return to the

tonearrn rest and complete shut off of

the turntable.

Alternatively, the tonearm can be

lifted manually by means of the tonearm

finger lift and returned to the tonearm

rest. The programming lever should

then be moved to the OFF position to

turn off the unit (Fig C)

Automatic Multiple Record Play

Yo;'l',.,1lcel 91C cair oe used to play

. _l: p'e "eCOros auio.natically, but with

i'r Qor,ari cl"erences \,vi1en cornpared

','/l:' ur,;ts t,,lrich are cornrnonly

categcrized as "automatic turntables".

T"re ts'l'C mechanism is exceptionally

sirnple.','litlr a rninimurn number of

moving paris.

Reccrds are handled with two-point

support as opposed to the umbrella

type si n gl e-support system commonly

used. The B'l'C system stabilizes the

records and insures reliable dropping.

There are other automatic turntables

that use a two-point record support

system, but the 940 differs in that

automatic shut-off is cornpletely inde-

pendent of the center automatic spindle.

This eliminates the critical sensing

nature of the spindle and is one of the

reasons for the reliable changing

capabilities of the B'l'C unit.

This design also makes it much

simpler to accommodate records with

variations in the center hole diameter

or thickness,

lnstalling Multiple Play Spindle

To play u p to six records in seq uence,

remove the short manual spindle from

the turntable.

Place the multiple play spindle

in the center of the turntable. Rotate

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