Micro Seiki BL-111 User manual

MICRO
BL-111

= Names of the parts
Dust cover
Hinge or
Mounting base
Pulley cover
Platter
Controt panels ia
Photo 1

=
Accessories
a
(2)
(3)
(4)
(5)
(6)
a)
(e)
(9)
(10)
(4
(12)
(13)
Dust cover (packed separately)
Platter
(packed
separately)
Mounting
base
(packed
separately)
Handle
Drive thread (spare provided)
Threading ange
Hexagonal wrench
Mounting base screws
MS x 25 (6); flat washers (1)
45 rpm adapter
Strobo mat
ower cord
Ground wires (2)
Polishing cloth

«Assembling
the
platter
Stand
the
platter
vertically,
take
out
the
accessory
drive
thread
‘©
Mounting
the
platter
and
then
attach
it
to
the
bottom
of
the
platter.
Pass
one
end
of
the
Use the accessory handles to take out the platter. Remove one of thread loop over the threading angle. (Photo 4)
the handles, tighten the threading angle together with the butterfly
nut accessory to the handle and mount. (Photo 3)
Threading angle
Photo 3.

When the three screws for anchoring the pulley cover are loosened,
these are not detached completely from the cover but remain in posi
tion with a certain amount of play. Take hold of these screws and
remove the pulley cover. Use the accessory hexagonal wrench to
loosen two of the anchoring screws and then move the pulley slide
knob and check that the pulley is at the innermost position.
(Photo 5)
Bulley slide «knob sees
Next, with the platter as shown in Photo 4, nwunt it onto the shaft
Take care to ensure that the platetr hole is not bumped against the
shaft. Pass the drive thread along the pulley groove, rotate the
pulley slide knob and move the pulley to the outside. The tautness
of
the
thread
should
allow
for
a
small
amount
of
slack,
which
can
be
confirmed with your finger. After adjustment, tighten up the pulley
anchoring screws. (Photos 6 and 7) After adjustment, detach the
Grive thread from the end of the threading angle and remove both
the handle and the angle.

After having attached the thread, rotate the platter two or three
revolutions by hand and check that the pulley and platter rotate
together smoothly.
‘Switch on the power and check that the pulley does not rotate by
itself when the platter starts revolving. Now mount the pulley cover
so that it falls neatly into place on the cabient, taking care not to
mark the cabinet.
Not
Take care to avoid any adherence of oil or other matter on the parts
that come into contact with the thread on the platter and pulley.
‘The platter is made of gunmetal and so crystals may sometimes
appear to be floating on the surface. This is not indicative of a
defect in the finish. The platter has been given a layer of clear paint
to prevent dirt from adhering and so it should never be wiped with
any substance containing alcohol or with a thinner of any kind
since this will cause discoloration and corrosion.
=
Mounting
the
tonearm
‘* Selecting the mounting base (A-1200 series)
Select the mounting base in accordance with the tonearm which you
intend to use. Special work is required to accommodate tonearms
which
are
not
listed
below.
A
mounting
base
is
provided
with
the
BL-111 but a second base is optional
(Special work is required to accommodate tonearms which are
included in the above list.)
= Compatible tonearms
A1201
MICRO/MA-505X, S, 707X
AUDIO CRAFT/AC-300MKII
SAEC/WE-407/23
TECHNICS/EPA-99
A-1202
SAEC/WE-30BN, 308SX
A1203
FR/FR-64, 64S, 14
DENON/DA-303, 305, 307, 399, 401
VICTOR/UA-5045
A-1205
MICRO/MA-5O5Xi1, Sit, 808X
AUDIO CRAFT/AC-3000MC
A-1206
‘SME/3009SII, SII1

=
Setting
the
tonearm
‘*
Mounting
position
of
base
First,
provisionally
anchor
the
tonearm
to
the
mount
base
and
then
Mounting
the
mounting
base
with
the
index
mark
aligned
as
in
Fig.
check
the
designated
overhang.
Now
secure
the
tonearm
properly
to
2
automatically
produces
the
required
effective
length
of
the
tone-
the
mounting
base
and
then
attach
the
base
to
the
cabinet
using
the
arm
(except
in
a
few
cases)
and
the
overhang.
accessory
screws
(M5
x
25)
as
shown
in
Fig.
1
lageaiark
=
Photo 8
Mounting base

= Attaching the power cord and ground wire
~ Ground terminat
La Power cord Be
Rear Fig. 3
The
power
cord
is
plugged
into
the
rear
panel
of
the
turntable
as
in
Fig. 3. One end of the accessory
ground
wire is attached
to the
ground
terminal
and the other end is attached
to the GND terminal
on
the
amplifier.
A
ground
terminal
is
also
provided
near
the
open-
ing on the rear panel of the turntable
from which
the tonearm
cord
is drawn
out. The ground
circuit
of this terminal
differs
according
to the tonearm
which
is used and so decide
whether
or not to use
the ground
wire in accordance
with the amount
of noise heard.
¢ Mounting the arm rest
When you are using an arm rest which is separate from the tonearm,
the rest can be mounted simply without having to drill any holes in
the base if you provide yourself with the optional RB-5.
RB-5
optional
arm
rest
Photo
10

Speed selection and adjustments
©
Power
switch
When
this
switch
is
set
to
the
ON
position,
the
power
is
supplied
to
the
turntable
and
the
platter
starts
to
rotate.
‘* Speed adjustment knob
To adjust the speed, place the accessory
strobo mat on the platter. It is possible to
‘nake the platter rotate up to 6% (semitone
pitch) slower or faster than the rated rota:
tional speed. The speed is increased in the
“B* direction and reduced in the
tion.
'* Speed selector switch
Every time this switch is depressed, the
speed alternates between 33 and 45 rpm.
Select the position in accordance with the
rated speed of the record being played.
When the power switch is set to ON, the
speed is automatically set to 33-1/3 rpm.

= Mounting and adjusting the dust cover
‘¢
Mounting
the
dust
cover
Fit the projection in the dust cover bracket into the cutout in the
turntable bracket and insert in the direction of the arrow to mount.
(Photo 12)
A free-stopping type of dust cover is used. If the cover does not
close
completely
or
if
it
closes
without
stopping,
adjust
the
screw
shownsin Photo 13.
= Handling precautions and maintenance
© Center shaft wear
The center shaft used in the 8L-111 features 2 construction which
employs an oil bath system to resist loads and aging. This is a semi-
permanent system that is maintenance-free and does not require the
oil or bearings to be replaced. The durability of the center shaft is
guaranteed
and
should
any
trouble
result
under
normal
conditions
of use, it will be replaced by MICRO gratis.
Note: Under no circumstances should the rear cap of the center
shaft be removed. Removal of this cap will result in the sealed
oil spilling out and other trouble, (Photo 14)
‘© Replacement period for thread
Replace
the
thread
from
time
to
time
in
order
to
maintain
its
initial
characteristics.
The
replacement
period
differs
according
to
its
use
but
once
it
becomes
too
dirty
or
appears
to
have
worn
with
friction,
it should
be replaced.
After you have used the spare, obtain the K-5 replacement thread
from your MICRO dealer.

= Looping the drive thread with the K-5 replacement
thread
(1)
Cut
the
thread
into
a
tength
of
1010
mm.
(2)
Tie the
thread
together
and
shape
it
into
the
length
shown
in
Fig.
4.
Knot
487
=
ne
——
|
i<
>|
:
thread
is
taut
|
Fig.
&
ing the motor
The
BL-111
motor
uses
a
special
oil
which
obviated
the
need
for
oiling as such. Usage of any other type of oil may result in a mal-
function
or
trouble.
(If
there
is
anything
wrong
with
the
motor,
contact MICRO’s Servicing Department.)
© Installing the turntable
(1) If the turntable is instatted near an amplifier or near equipment
using
a
transformer,
it
will
be
affected
by
flux
and
hum
will
be
generated as a result. In particular, MC cartridges are very sus-
ceptible
to
the
effects
of
flux
and
so
the
turntable
should
be
installed as far away from amplifiers as possible.
(Examples of poor installation)
Flux
Turntable
(2) The reproduced sound will deteriorate if the turntable is exposed
to vibration. Where possible, install it on a sturdy stand. The
sound quality is enahnced if a glass panel or marble slab is used.
Avoid installing the turntable directly infront of the speakers
(where it will be exposed to the sound waves) or on top of the
speakers. Leave as large a clearance with the wall as possible
when installing against a wall. Failure to comply with these in-
structions may result in howl (acoustic feedback}.
{3) Do not install the turntable at an angle but select a location
which is completely horizontal.
= Specifications
BL-111
Drive system Thread drive
Rotational speeds 33-1/3 and 45 rom
Speed adjustment range +6%
Platter 31 cm diameter, 10 kg (gunmetal)
Moment of inertia 1,500 kg.cm?
Dimensions 532(W) x 440(D) x 230(0) mm
Weight 36 kg
Turntable
Amplifier
ese Power
Bd transtormer
Fig. 5

@MICRO SEIKI CO.,LTD. ron saran