JVC QL-Y5SF User manual
MODEL
QL-Y5SF
QUARTZ
FULLY
AUTOMATIC
TURNTABLE
No,
2522
MAR.
1980
Contents
1.
Specifications
.
0...
1.
cc
cece
cece
eens
2.
Service
Precautions
...........00e
eee
veces
3.
Names
and
Their
Functions
..............+.
4.
New
Technology
4-(1)
Electro-dynamic
Servo
Control
Tonearm..
.
.
4-(2)
“OQ”
Damping
in
Electro-dynamic
Servo
Control
1.0...
2c
ee
ee
eee
ee
eee
4-(3)
Detecting
Record-end
..............-.
4-(4)
Applied
Tracking
Force
by
Electro-dynamic
Servo
Control
..........
4-5)
Anti-skating
Control
...........22000%
4({6)
Cueing
Control.
.........-2---2-----
4-(7)
Lead-in
Positioning
...........--..---
5.
Adjustment
Procedures
5-(1)
Tonearm
Height
..................-.
5-(2)
Cueing
(Up/Down)
Height
.............
5-(3)
Tracking
Force.
...........2200e0
aes
5-(4)
“OQ”
Damping
...........
02002
e
eee
SAG)
eatin.
s.
sco
oia(Si
tne
ced
tece
a
hese
Slate
reiee
oie
cs
5-(6)
Lead-out....
2.2.2...
2.0.0.2
eee
eee
5-(7)
Motor’s
Rotation
...........-2.00008-
5-(8)
Tonearm
Off-set
Position
..............
6.
Troubleshooting
Charts
6-(1)
Turntable
does
not
rotate..............
6-(2)
Turntable
rotates
at
high
speed
..........
1.
Specifications
MOTOR
SECTION
Motor
:
Coreless,
DC
type,
FG
servo-
motor
Drive
system
:
Direct
drive
Speeds
:
33-1/3,
45
rpm
:
0.025
%
(WRMS)
0.011
%
(by
K
&
K
measuring
method)
Signal-to-noise
ratio
:
More
than
78
dB
(DIN-B)
Speed
detection
:
Frequency
generator
Starting
torque
:
1kg-cm
Speed
deviation
:
Within
0.002
%
Load
characteristics
:
0%
{with
130
g
total
tracking
Wow
and
flutter
force)
Drift
:
0.0001
%/H
Power
characteristics
:0%
(+10
V)
Temperature
characteristics
:
0.00005
%/°C
Platter
:
31cm
TONEARM
SECTION
Type
:
Dynamically-balanced
electronic
servo
controlled
arm
Effective
length
:
245
mm
Overhang
:
15mm
Weight
range
:
14.5
—
24g
(including
headshell
weight)
Variable
tonearm
height
range
:
42
—
48
mm
(preset
to
45
mm)
either
direction.
QOL-Y5F
No.
2522
CHECKING
YOUR
LINE
VOLTAGE
(For
U.S.
Military
Market
and
Other
Countries)
Before
inserting
the
power
plug,
please
check
this
setting
to
see
that
it
corresponds
with
the
line
voltage
in
your
area.
If
it
doesn’t,
be
sure
to
adjust
the
voltage
selector
switch
to
the
proper
setting
before
operating
this
equipment.
The
voltage
selector
switch
is
located
either
on
the
set's
or
the
chassis,
Simply
insert
a
screw
driver
into
the
voltage
selector
switch
and
turn
it
in
either
direction
while
pressing
slightly
and
in
such
a
way
that
desired
voltage
marked
on
the
switch
is
positioned
at
the
arrow
marked
on
the
rear
panel
or
the
chassis.
The
voltage
selector
switch
accommodates
up
to
three
turns
in
6-(3)
No
tracking
forceon
play..............
6-(4)
Tonearm
does
not
move
to
right
direction
.
. .
6-(5)
Tonearm
does
not
move
to
left
direction.
.
.
.
6-(6)
Tonearm
does
not
return
automatically
6-(7)
No
“OQ”
damping
effects
..............
10
6-(8)
Cueing
does
not
operate
upwards.........
10
6-(9)
No
anti-skating
effects..............4.
11
6-(10)
Lead-in
is
not
performed
..............
12
6-(11)
On
the
tonearm
Up
Sensor
.............
13
7.
Connections
Diagram
............0
00
ee
eee
14
8.
Exploded
Views
and
Parts
List
8-(1)
Platter
and
Cabinet
..........-.-.....
15
8-(2)
Front
Panel
Ass‘'y
...............0004.
16
8-(3)
Tonearm
Ass’y
..
0.2.0.0.
eee
eee
17
9.
TXX-270
Printed
Circuit
Board
Ass’y
and
Parts
List
..........-.2.--65
18
10.
Packing
Materials
and
Part
Numbers
...........
21
11.
QL-Y5F
Schematic
Diagram
.............-..
22
12.
Accessories
List
.........2..--.----+-05-
24
13.
Parts
List
with
Specified
Numbers
for
Designated
Areas
...........2..2-
020s
eee
24
Power
Specifications
.............000
eee
ee
24
Warning:
When
replacing
the
parts
marked
with
/\
,
be
sure
to
use
the
designated
parts
to
ensure
safety.
CARTRIDGE
SECTION
(Except
for
U.S.A.,
Canada
and
the
U.K.)
Model
:
MD-1025EB
Type
:
Moving
Magnet
(MM)
Frequency
response
:
10
Hz
—
25,000
Hz
Output
:
3
mV
(1,000
Hz)
Channel
separation
:
25
dB
{1,000
Hz)
(test
record
TRS-1)
Load
resistance
247
kQ
—
100
k2
Compliance
:
10
x
10°
cm/dyne
(Dynamic)
30
x
10°°cm/dyne
(Static)
Stylus
tip
:
0.3
x
0.7
mil
diamond
Stylus
:
DT-Z1EB
Optimum
tracking
force
:
1.75
+0.25g
GENERAL
Power
source
Power
consumption
Dimensions
:
Refer
to
Table
at
page
24
:
Refer
to
Table
at
page
24
:
16.9(H)
x
48(W)
x
43(D)
cm
(6-5/8"
x
1-15/16"
x
1-3/4’)
(Since
the
dimensions
show
only
the
design
measurements,
consideration
is
required
when
installing
the
unit
in
a
limited
space
such
as
a
rack,
etc.)
Weight
:
10.5
kg
(23,1
Ibs)
(without
corrugated
card
board
case)
:
EP
adaptor........
1
Design
and
specifications
subject
to
change
without
notice.
Accessory
Fig.
1
2.
Service
Precautions
1;
For
repair
of
the
tonearm,
only
the
parts
whose
names
and
numbers
are
listed
on
page
17
are
replaceable.
So
be
careful
not
to
remove
any
other
part.
.
For
repair
of
any
component
other
than
the
tonearm,
be
sure
to
perform
part
replacement
in
accordance
with
the
appropriate
unit
of
the
block
shown
in
the
dis-
assembly
diagram.
.
When
remounting
the
motor
base
or
tonearm
ensure
positive
contact
with
the
base
of
the.tonearm
(as
shown
in
Fig.
14B)
and
then
secure.
.
Ensure
that
the
turntable
is
level
when
servicing
motor
rotation
or
arm
action.
3.
Names
and
Their
Functions
(2)
0
°@o
SIZE
indicator
(30)
SIZE
indicator
(17)
QUARTZ
LOCK
indicator
SPEED
indicator
(33)
SPEED
indicator
(45)
Fig.
2
.
Tonearm
This
tonearm
is
called‘an
Electro-Dynamic
Servo
Tone-
arm.
All
the
functions,
the
tracking
force,
anti-skaing,
Q-damping,
etc.
are
done
electrically.
.
SPEED
switch
Select
the
speed
depending
on
record
rpm.
The
platter
rpm
is
indicated
by
the
SPEED
indicators.
.
SIZE
switch
Select
the
size
depending
on
record
size.
Selected
size
is
indicated
by
the
SIZE
indicators.
.
START/STOP
switch
Press
this
switch
to
rotate
the
platter.
When
the
speed
reaches
normal,
QUARTZ
LOCK
indicator
(green)
lights.
Then
the
tonearm
automatically
lifts
up
and
moves
to
lead-in.
.
READY
switch
ON:
Depress
this
switch
to
power
the
turntable
system
on.
SPEED
and
SIZE
indicators
light.
Stylus
force,
anti-skating
and
Q-damping
are
automati-
cally
applied,
as
already
set.
OFF-ARM
BALANCE:
Re-depress
the
switch
to
cut
the
power
off.
The
SPEED,
SIZE
and
QUARTZ
LOCK
indicators
go
out,
and
the
stylus force,
anti-skating
and
Q-damping
become
“‘zero”.
10.
11.
.
If
power
is
applied
when
the
motor
connector
is
discon-
nected
the
drive
transistor
will
be
damaged.
Therefore,
never
disconnect
the
motor
connector
if
the
power
is
or
will
be
applied.
.
Note
that
when
repairing
the
printed
board,
if
the
heat-
sink
is
removed,
transistor
temperature
will
rise.
.
Upon
completion
of
repair
or
replacement
of
the
tone-
arm,
motor
or
any
other
component,
be
sure
to
perform
Lead-in
and
Lead-out
adjustments.
.
Locating
the
tuner
antenna
and
the
turntable
output
lead
closely
may
cause
noise
due
to
disturbance
from
the
tuner;
therefore,
place
them
as
far
from
one
another
as
possible.
Note:
When
you
re-depress
the
READY
switch,
make
sure
the
tonearm
is
clamped
on
the
arm
rest,
otherwise
you
may
damage
a
record
or
the
stylus.
Even
when
the
READY
switch
is
set
to
OFF,
about
1
watt
power
is
consumed.
Accordingly,
disconnect
the
power
cord
from
wall
outlet
to
cut
the
power
completely
off.
.
Q-DAMPING
knob
This
knob
is
provided
to
smoothen
stylus
tracing
hori-
zontally
and
vertically
along
with
the
record
disc
grooves
and
to
effectively
lower
the
resonance
peak
levels
of
the
tonearm.
When
Q-DAMPING
is
in
opera-
tion:
1.
Trackability
and
sound
quality
are
improved,
2.
Resistance
against
howling
is
much
increased,
3.
S/N
ratio
and
wow-and-flutter
are
improved,
etc.
.
ANTI-SKATING
TRACKING
FORCE
knob
This
knob
is
provided
to
cancell
the
centripetal
force
(sliding
of
the
tonearm
to
the
center
of
the
record)
and
to
prevent
the
stylus
tip
from
sliding
or
exerting
unwanted
force
to
the
inner
side
of
the
record
groove.
These
are
automatically
and
electrically
set
to
the
optimum
value
by
selecting
the
designated
stylus
force.
.
UP/DOWN
switch
When
this
button
is
pressed
the
tonearm
will
lower
to
the
record
surface,
then
the
UP/DOWN
indicator
goes
out,
Pressing
this
button
again
will
cause
the
tonearm
to
lift
up
from
the
record
and
the
UP/DOWN
indicator
will
come
on.
.
UP/DOWN
indicator
This
indicator
lights
when
the
tonearm
lifts
up
and
goes
out
when
it
is
lowered.
This
does
not
light
during
lead-in,
reject
or
auto-return.
Tonearm
transport
switch
The
tonearm
can
be
moved
manually
or
can
be
moved
to
any
position
of
the
record
surface
by
pressing
the
following
buttons.
<:
depressing
this
button
will
move
the
tonearm
to
the
left,
releasing
it
stops
travel.
>:
depressing
this
button
moves
the
tonearm
to
the
right,
releasing
it
stops
travel.
REPEAT
switch
Depress
this
button
for
repeated
play.
The
REPEAT
indicator
lights
to
show
that
the
REPEAT
setting
has
been
made.
Press
again
to
release
the
REPEAT
function.
The
indicator
will
go
out.
QL-Y5F
No.
2522
4.
New
Technology
4-(1)
Electro-dynamic
Servo
Control
Tonearm
Detecting
Coil
Detected
Voltage
—>
Electric
Current
*
for
Electric
Damping
Tracking
Magnet
Orive
Circuit
“UP
Position
3
2!
3
Drive
Coils
me
Anti-Skating
Force
Constant
Tracking
Force
1.
The
tonearm
is
moved
by:
(1)
the
effective
mass
and
compliance
of
the
tonearm,
(2)
warp
and/or
eccentricity
of
the
record,
(3)
external
vibration,
(4)
sound
pressure,
etc.
A.
When
the
tonearm
has
been
vertically
moved
in
the
upward
direction
of
arrow
1
(see
above
diagram).
The
magnet
rotates
as
the
tonearm
moves.
Voltage
occurs
in
the
detection
coil.
The
detected
voltage
is
converted
into
a
current
and
amplified
in
the
vertical
drive
circuit.
The
driver
current
for
damping
is
transferred
to
the
drive
coil.
Magnetic
field
is
generated
by
the
drive
coil.
This
magnetic
field
forces
the
magnet
to
move
in
the
downward
direction
of
arrow
(3).
Thus,
the
tonearm
is
controlled
and
is
subject
to
damping.
B.
When
the
tonearm
has
been
horizontally
moved
in
the
direction
of
arrow
(4)
(see
foregoing
diagram)
the
<@
Constant
Electric
Current
Drive
Coil
10°
Tracking-Force
Application
Electric
Current
*
for
Electric
Damping
@
Electric
Current
for
Anti-Skating
Disc
Surface
Detection
UP/DOWN
Control
Logic
Circuitry
Horizontal
Aum
Reet
|
osition
<
>
Magnet
|
~Auto
Return
STARY/STOP
Circuitry
Detection
Fig.
3
tonearm
is
controlled
by
the
force
in
the
direction
of
arrow
(2)
(see
foregoing
diagram)
and
is
subject
to
damping
the
same
as
in
Item
A.
C.
When
the
tonearm
has
been
moved
in
an
oblique
direction
the
movement
is
divided
into
those
in
the
vertical
and
horizontal
directions
and
the
tonearm
is
subject
to
damping
in
the
same
manner
as
in
Items
A
and
B.
D.
When
the
tonearm
has
been
moved
in
the
opposite
direction
to
that
in
Item
A
or
B,
the
polarity
of
the
detected
voltage
is
reverse
and
the
tonearm
is
subject
to
damping
in
the
same
manner
as
in
Item
A
or
B.
.
With
exception
of
the
damping
signal,
the
current
for
tracking
force
and
the
current
for
anti-skating
are
al-
ways
applied
while
playing.
.
When
the
tonearm
is
‘‘free
travelling’
current
is
supplied
to
neither
tracking
force
nor
anti-skating
but
to
the
vertical
and
horizontal
drive
coils.
Besides,
the
tonearm
smoothly
moves
at
a
constant
speed,
and
is
subject
to
an
adequate
damping
force
which
allows
motion
to
be
halted
at
exactly
that
point
that
the
switch
is
released.
4-(2)
‘‘Q’’
Damping
in
Electro-dynamic
Servo
Control
Tonearm
resonance
Warped
and/or
off-center
record,
and/or
its
external
vibration
a8
aS
"
Frequency
When
Q
damped
>
Fig.
4
QL-Y5F
No.
2522
Any
vibrating
system
utilizing
mass
and
compliance
has
a
resonance
point,
Therefore,
the
same
applies
to
the
tone-
arm
used
in
a
turntable.
Tonearms
now
sold
on
the
market
possess
a
resonance
fre-
quency
at
around
5
—
10
Hz,
This
resonance
frequency
has
a
great
effect
on
the
reproduction
of
middle
and
low
fre-
quency
ranges,
(Refer
to
Fig.
4.)
In
addition,
warped
and/
or
off-center
records,
and/or
the
external
vibrations
of
it
make
the
tonearm
vibrate,
thus
resulting
in
a
modulation
of
the
sound
groove
signals
when
the
sound
groove
is
being
reproduced.
(Refer
to
Fig.
5.)
The
oil-damped
tonearm
employed
on
the
“QL-F6”
and
the
Electro-Dynamic
Servo
Tonearm
employed
on
the
“QL-Y5F”
have
been
developed
to
solve
these
problems.
The
oil-damped
tonearm
and
Electro-Dynamic
Servo
Tone-
arm
are
the
same
in
theory
but
differ
in
damping
systems.
Oil-damped
tonearm:
Oil
viscosity
resistance
is
utilized.
Electro-Dynamic
Servo
Tonearm:
The
vibration
speed
of
the
tonearm
is
electrically
detected
and
damped
by
the
operation
of
the
servo
loop.
4-(3)
Detecting
Record-end
In
the
Electro-Dynamic
Servo
Tonearm,
since
the
tonearm
speed
is
detected,
the
record
feed
pitch
can
also
be
elec-
trically
detected,
This
tonearm
is
provided
with
a
positional
restriction
de-
vice
that
detects
the
record
end
by
using
a
LED
and
a
phototransistor.
Because
this
device
is
set,
records
falling
within
the
standards
range
can
be
detected
electrically.
4-(4)
Applied
Tracking
Force
by
Electro-dynamic
Servo
Control
Conventional
tracking
force
application
systems
are
classi-
fied
into
two
types:
the
static
type
utilizing
the
mass
of
the
tonearm
and
the
dynamic
type
utilizing
a
spring
inside
the
tonearm.
In
the
static
type,
tracking
force
is
applied
without
me-
chanical
contact,
thus
it
is
possible
to
minimize
tracking
force
error
due
to
record
warps,
etc.
However,
the
tone-
arm
centroid
tends
to
shift
to
the
headshell
side
upon
application
of
tracking
force,
thus
resistance
to
external
vibrations
is
not
good,
In
the
dynamic
type,
tracking
force
is
applied
by
a
spring
or
the
like
after
performing
‘0’
balancing,
thus
the
tone-
arm
centroid
is
always
fixed
and
therefore
resistance
to
external
vibrations
is
high.
However,
the
linearity
of
the
spring
or
the
resistance
at
the
points
of
contact
of
the
spring
produce
extended
tracking
force
error,
Therefore
the
dynamicype
is
generally
unused.
In
pursuit
of
non-resonance
and
non-vibration,
JVC
has
developed
the
electrical
tracking
force
application
system
using
a
coil
and
a
magnet,
without
mechanical
contact,
which
permits
high
resistance
to
external
vibrations
and
low
tracking
force
error.
In
this
way,
the
mechanically
applied
tracking
force
using
a
spring
or
the
like,
has
been
replaced.
QL-Y5F
employs
such
an
electrical
tracking
force
applica-
tion
system.
4-(5)
Anti-skating
Control
Many
conventional
anti-skating
devices
(also
called
skating
force
cancelers)
employ
a
spring
and
are
mechanical.
There-
fore,
this
type
of
anti-skating
device
may
be
likely
to
transmit
frictional
resistances
and/or
external
vibrations
to
the
tonearm,
To
avoid
this
problem,
the
QL-Y5F
employs
an
electrical
anti-skating
system
with
a
coil
and
magnet,
thus
the
centri-
petal
force
of
the
tonearm
is
offset
without
mechanical
contact.
4-(6)
Cueing
Control
In
the
Electro-Dynamic
Servo
Tonearm,
even
those
mecha-
nically
operated
components
have
been
converted
to
be
electrically
operated.
Therefore
the
complex
mechanism
at
the
tonearm
base
has
been
simplified,
thus
enabling
non-
resonance
and
non-vibration.
4-(7)
Lead-in
Positioning
See
page
13.
5.
Adjustment
Procedures
5-(1)
Tonearm
Height
Fig.
6
.
Set
the
READY
switch
to
“OFF-ARM
BALANCE”.
.
Remove
the
clamp.
.
Put
a
disc
record
on
the
platter
and
move
the
tonearm
onto
the
record,
See
if
the
tonearm
is
horizontal
when
a
stylus
tip
is
nearly
touching
to
the
record
surface.
4.
Adjust
the
height
by
hand
by
loosening
the
height/fix
knob
so
that
the
tonearm
is
horizontal
to
the
record
sur-
face
with
the
stylus
tip
being
nearly
touched
to
the
re-
cord.
Then,
fix
the
knob
firmly.
(Fig.
6)
WN
5-(2)
Cueing
(Up/Down)
Height
Fig.
7b
This
adjustment
is
os
I
performed
after
completion
of
the
tonearm
height
adjustment.
1.
Remove
the
two
screws
for
the
coil
cover.
2.
Turn
the
READY
switch
on,
then
put
the
tonearm
in
the
UP
position
by
pressing
the
““UP/DOWN”
switch.
3.
Turning
the
adjusting
screw
clockwise
with
a
Jewellers
screwdriver
(as
shown
in
Fig.
7a)
causes
the
stylus
tip
clearance
to
increase,
The
appropriate
clearance
from
the
record
surface
is
about
6
mm.
NOTES:
1.
If
a
screwdriver
for
removing
of
coil
cover
is
not
available,
consult
your
nearest
JVC
dealer.
(Fig.
7b)
2.
When
mounting
the
coil
cover,
be
careful
not
to
catch
and
disconnect
the
wire
with
the
coil
cover.
OL-Y5F
No.
2522
5-(3)
Tracking
Force
Fig.
8
.
Place
a
record
on
the
platter.
.
Remove
the
stylus
protector
cover.
.
Release
the
tonearm
clamp.
.
Turn
the
main
weight
so
that
the
tonearm.maintains
a
balance
with
the
stylus
tip
is
almost
touching
to
the
record,
(Fig.
8,
9)
PWN
5-(4)
““Q’’
Damping
ANTI-SKATING
TRACKING
FORCE
Fig.
11
5-(5)
Lead-in
5-(6)
Lead-out
First,
secure
the
tonearm
to
the
tonearm
rest,
and
set
the
RPM
to
33.
Next,
turn
VR806
so
that
the
voltage
between
TP-1
and
TP-8
on
the
board
becomes
-14
mV.
5-(7)
Motor’s
Rotation
Since
this
double
servo
quartz
control
turntable
is
designed
to
have
a
wider
locking
range
than
the
conventional
turn-
table,
it
is
not
required
to
adjust
the
RPM.
QL-Y5F
No,
2522
ANTI-SKATING
TRACKING
FORCE
Fig.
9
Fig.
10
.
Return
the
tonearm
to
its
rest
and
clamp
it.
.
According
to
the
recommended
stylus
force
of
a
cartridge
to
be
used,
turn
the
“ANTI-SKATING
TRACKING
FORCE”
knob,
then
the
anti-skating
and
tracking
force
is
applied
electronically.
(If
stylus
force
is
2
gram,
set
the
knob
to
the
index
‘‘2’".)
(Fig.
10)
an
Turn
the
Q-DAMPING
knob
to
equal
the
stylus
force.
(If
stylus
force
is
2
gram,
set
the
knob
to
the
index
of
‘’2’’.)
(Fig.
11)
=
.
Place
a
30
cm
record
on
the
platter.
.
Set
the
SIZE
switch
to
‘’30”
and
operate
the
turntable
in
automatic
play.
Confirm
if
the
stylus
lead-in
position
is
about
3
to
4mm
inward
from
the
outermost
edge
of
the
record
disc.
If
the
lead-in
position
is
not
in
the
proper
range,
turn
the
adjusting
screw
with
a
screwdriver
and
adjust
the
lead-in
position.
(Fig.
12)
Note:
The
QL-Y5F
for
U.S.A.
and
Canada
has
a
cap
covering
the
hole
for
the
adjusting
screw.
Remove
this
cap
to
make
adjustment.
5-(8)
Tonearm
Off-set
Position
1.
Set
the
VR
for
tracking
force
(VR801)
to
O,
then
turn
Q
damping
VR
(VR802)
fully
to
the
right.
Set
the
voltage
between
TP-4
and
TP-5
to
0
V
by
turning
VR804
(with
the
tonearm
in
the
DOWN
position).
Set
the
voltage
between
TP-2
and
TP-3
to
0
V
by
turning
VR805
(with
the
tonearm
secured
to
the
arm
rest
in
the
“UP”
position).
Note:
Allowable
range
of
‘0
V"
is
+5
~
10
mV.
2:
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“9
6-(2)
Turntable
rotates
at
high
speed
The
turntable
rotates
at
a
high
speed
when
the
START/STOP
switch
is
pressed.
Does
the
waveform
(2
Vp-p)
appear
at
Pin
1
of
1C811?
Does
the
turntable
stop
when
Pin
7
of
IC811
is
grounded?
No
Check
FG
output
and
1C811,
Does
the
waveform
appear
at
Pin
1
of
IC812as
shown
in
the
diagram?
Does
the
turntable
stop
when
the
base
of
X823
is
connected
to
+12
V?
X823
is
Yes
No
defective.
Check
C836
and
R939.
Replace
it,
Does
the
turntable
Does
about
stop
when
the
connecting
point
;
No
Check
IC812
R934
and
of
R898,
R936
and
RBI?
are
ad
Ay
of
R807.
grounded?
:
Yes
X823
is
defective.
Replace
it.
Does
the
F ‘
turntable
stop
when
Yes
1C811
is
defective.
Pin
7
of
1C811
is
Replace
it.
grounded?
NOTE:
While
repairing,
do
not
disconnect
the
motor
from
associat-
ed
circuits.
Disconnection
may
cause
destruction
of
transis-
tors
in
the
drive
circuits.
OL-Y5F
No.
2522
6-(3)
No
tracking
force
on
play
The
tracking
force
is
not
applied
while
playing
Referring
to
the
circuit
diagram,
confirm
that
the
+5
V
and
Refer
to
“NOTE”
on
page
10.
No
Replace
E23340-003
tonearm
ass‘y.
+12
V
of
source
voltage
appear.
Yes
Yes
The
power
source
is
defective.
Check
the
power
source
circuit.
Is
there
abnormality?
No
Does
0.5
to
0.8
V
appear
at
Pins
6
and
7
of
1C804
when
VR801
for
tracking
force
is
fully
turned
to
the
right?
No
Check
1C803,
1C804,
VR803,
R806
and
R828.
Yes
Does
1.5
to
2.4
V
appear
at
Pin
2
of
1C804?
No
1C804
is
defective,
or
the
adjustment
of
VR804
is
incorrect
or
the
wiring,
etc.
is
disconnected.
For
adjusting
VR804,
refer
to
5-(8)-2
on
page
5,
Yes
Does
1,5
to
2.4
V
appear
at
Pin
3
of
1IC804?
No
Check
I1C803
and
R801.
Yes
Does
the
same
voltage
as
Pin
6
of
1C802
appar
at
Pin
1
of
IC804
when
VR802
for
Q
damping
is
set
to
minimum?
No
Check
the
connector
for
the
tonearm
and
the
printed
pattern.
Yes
At
the
emitter
of
X801,
does
voltage
appear
at
its
plus
side
as
viewed
from
GND?
zat
Check
X801
and
X802.
No
1C804
is
defective.
Replace
it.
6-(4)
Tonearm
does
not
move
to
right
direction
The
tonearm
does
not
travel
to
the
right
(>).
Refer
to
“NOTE”
on
page
10.
No
Replace
E23340-003
tonearm
ass’y.
Are
the
output
A,
B,C,
and
Din
the
Microcomputer
1C808
as
shown
below?
The
connector
for
the
tonearm
coil
and
the
tonearm
coil
are
discon-
nected,
Does
about
+12
V
appear
at
the
emitter
of
X803?
Does
about
+12
V
appear
at
Pin
1
of
IC805?
Yes
Yes
:
:
1C807
or
IC805
is
, ;
IC808
is
defective.
A
X804
is
defective.
defective.
Replace
it.
Replace
it.
Replace
it.
The
tonearm
does
not
travel
to
the
left
(<).
Refer
to
“NOTE”
on
page
10.
No
Replace
E23340-003
tonearm
ass‘y.
Are
the
outputs
A,
B,
C,
and
D
in
the
Microcomputer
IC808
as
shown
above?
The
connector
for
the
tonearm
coil
and
the
tonearm
coil
are
discon-
nected.
Does
about
~12
V
appear
at
the
emitter
of
X803?
Does
about
Yes
-12
V
appear
at
Pin
1
of
IC805?
Yes
No
No
No
1C805
or
IC807
is
1C808
is
defective.
X803
is
defective.
defective.
Replace
it.
Replace
it.
Replace
it.
QL-Y5F
-—8-—
No.
2522
6-(6)
Tonearm
does
not
return
automatically
Auto-return
does
not
operate.
Does
the
return
function
Operate
when
the
tonearm
is
placed
just
before
normal
record
end
and
left
to
follow
the
groove
freely
to
the
normal
record
end?
Readjust
VR806
for
auto-return,
then
check
with
the
test
record.
For
adjusting
VR806,
refer
to
5-(6)
on
page
5.
This
phenomenon
occurs
when
the
output
at
the
horizontal
tonearm
coil
is
lower
than
normal.
No
Since
the
horizontal
damping
in
this
case
is
also
lower
than
normal,
check
in
advance
the
horizontal
damping.
The
horizontal
damping
becomes
normal
by
repairing
the
damping
circuit.
Does
the
voltage
at
Pin
1
of
1C809
change
from
-5
V
to
+5
V
when
3
mm
pitches
in
the
test
record
are
played
back?
Yes
Check
IC808.
No
Does
around
-10
to
15
mV
(33-1/3
rpm)
appear
between
TP-1
and
Pin
6
of
TP-8?
Yes
Check
IC809,
R848
and
R877.
Check
the
auto-return
Yes
of
the
tonearm
with
the
test
record
after
readjusting.
Does
around
~-10
to
-15
mV
(33-1/3
rpm)
appear
here
by
readjusting
VR806?
No
Readjust
the
offset
by
VR805,
or
IC805
No
or
1C806
is
defective.
For
adjusting
VR805,
refer
to
5-(8)-3
on
page
5.
Does
about
0
V
appear
at
Pin
6
of
1C806
and
at
Pins
6
and
7
of
1C805
when
VR801
for
tracking
force
and
anti-skating
is
set
to
minimum?
Yes
QL-Y5F
No.
2522
-9
—
6-(7)
No
“‘Q”’
damping
effects
Vertical
Q
damping
is
ineffective.
1C804
is
defective,
or
C803
or
VR802
is
short-circuited.
Horizontal
Q
damping
is
ineffective.
1C805
is
defective,
or
C811
or
VR8O02
ig
short-circuited.
6-(8)
Cueing
does
not
operate
upwards
Cueing-up
does
not
operate
So
the
outputs
A,
B,
Cand
D
in
the
Microcomputer
IC808
appear
as
shown
in
the
table
on
page
8?
Yes
Does
-0.16
V
appear
at
Pin
2
of
1C804?
Does
about
-12
V
appear
at
Pin
1
of
1C804?
No
Yes
Does
about
-12
V
appear
at
the
emitter
of
X801?
No
Yes
Vertical
Q
damping
is
not
released.
VR802
is
open,
or
the
connection
of
the
socket
for
VR802
is
defective.
Horizontal
Q
damping
is
not
released.
VR802
is
open,
or
the
connection
of
VR802
is
defective.
Refer
to
“NOTE”
below.
1C808
is
defective.
Replace
it.
The
connector
for
the
tonearm
coil
is
disconnected.
R828
(33
k&)
is
disconnected,
or
R834
(1
k&)
is
short-
circuited
with
the
GND
in
its
Note:
vicinity.
The
resistance
between
each
two
wires
of
the
10-pin
socket
running
out
from
the
tonearm
should
be
as
follows:
Red
and
green
wires:
37
2
+1852
White
and
blue
wires:
1502
+752
Grey
and
purple
wires:
580
9
+299
Orange
and
yellow
wires:
71.25
2
+357
Q
1C804
is
defective.
Replace
it.
Check
X802
and
X801.
QL-Y5F
—10-
No.
2522
6-(9)
No
anti-skating
effects
With
the
tracking
force
set
to
around
1.5to
2g
when
the
turntable
is
operating
does
the
tonearm
move
to
the
right,
when
the
tonearm
is
0"
balanced,
by
force
of
shifting
the
tonearm
main
weight?
Yes
The
action
of
tonearm
is
normal.
Does
24
to
40
mV
appear
at
Pins
6
and
7
of
IC805
when
VR801
for
tracking
force
is
set
to
maximum?
=
Check
1C805,
C807,
R829
and
R836.
Yes
Does
0.75
—-1.2V
appear
at
Pin
6
of
1C806?
No
1C806
is
defective,
or
the
adjusted
VR805
is
out
of
position
or
the
wiring,
or
the
like
is
disconnected,
For
adjusting
VR805,
refer
to
5-(8)-3
on
page
5.
Yes
Does
the
same
voltage
as
at
Pin
6
of
IC806
appear
at
Pin
1
of
1C805
when
the
VR
for
Q
damping
is
set
to
minimum?
IC805
is
defective.
Replace
it.
At
the
emitter
of
X803,
does
voltage
appear
at
its
plus
side
as
viewed
from
GND.
Yes
Check
the
connector
for
the
arm,
printed
board,
the
printed
pattern
and
the
tonearm
coil.
No
X803
is
open
or
X804
is
short-circuited,
Replace
it.
No.
2522
-1i-
QL-Y5F
6-(10)
Lead-in
is
not
preformed
The
tonearm
does
not
perform
lead-in
should
the
START/STOP
switch
be
pressed.
Does
the
tonearm
lift
up?
No
Yes
Does
the
tonearm
move
to
the
left?
No
Yes
Does
the
tonearm
stop
at
the
aimed
position?
No
Yes
Refer
to
section
6-(8).
Refer
to
section
6-(8).
Refer
to
section
6-(5).
Do
the
respective
voltages
at
pins
1,5
and
13
of
IC801
vary
by
manually
moving
the
tonearm?
Yes
Do
the
respective
voltages
at
pins
3,
4
and
11
of
IC801
vary
by
manually
moving
the
tonearm?
Yes
1C808
is
defective,
Replace
it.
=
92
—
Replace
the
E23340-003
tonearm
ass‘y.
1C801
is
defective.
Replace
it.
QL-Y5F
No,
2522
No,
2522
6-(11)
On
the
Tonearm
UP
Sensor
When
the
tonearm
remains
at
the
UP
position
and
does
not
move
to
the
left
and
right
{at
the
states
of
lead-in,
lead-out,
ucir
>")
the
continuity
failure
of
the
UP
sensor
(given
below)
other
than
the
IC
failure,
the
coil
disconnection,
etc,
may
cause
this.
When
the
continuity
between
the
black
and
brown
wires
of
the
10-pin
socket
running
out
from
the
tonearm
is
checked
with
a
tester
(ON
at
UP,
OFF
at
DOWN),
when
the
conti-
nuity
fails,
remove
the
coil
cover,
then
clean
the
connecting
section
between
the
sensor
and
pin
with
a
cloth
containing
alcohol,
or
the
like.
Sensor
4-(7)
Lead-in
Positioning
The
lead-in
positioning
is
performed
by
the
microcomputer
(1C808).
The
position
(rotating
angle)
of
the
tonearm
in
motion
is
detected
by
reading
the
address
(001,
010
...
etc.)
in
the
rotating
encoder
in
unity
with
the
tonearm
by
using
the
three
LED/phototransistors.
The
microcomputer
always
compares
the
position
of
the
tonearm
in
motion
and
the
designated
lead-in
position,
stops
the
tonearm
motion,
and
issues
the
command
to
lower
the
stylus
on
the
record
surface.
In
addition,
this
microcomputer
determines
the
operating
position
of
the
tonearm
rest
switch
and
the
starting
position
of
lead-out
as
well.
wt
ar
im
@
About
15
mm
OQ
\t\7
ee.
2
¥
\
hi...
near
the
edge.
Can
~~
5
©)
Metal
sleeve
@®
Tool
for
solderless
securing
()
The
clamped
markes
shall
locate
at
the
near-
ly
equal
central
part
of
the
metal
sleeve.
/
@
These
shall
not
be
easy
to
draw
out.
.
The
respective
conductors
shall
are
out
of
the
|
sl
.
More
than
4
mm
a
aban
QL-Y5F
-13—
How
to
handle
the
solderless
connector
(for
USA
and
Canada
only)
In
this
turntable,
a
solderless
connector
is
used
to
connect
the
power
cord with
the
primary
lead
wire
of
the
power
transformer.
When
it
is
unavoidable
to
replace
this
connector
for
re-
placement
of
the
power
transformer,
or
the
like,
positively
perform
the
replacement
in
accordance
with
the
following
procedure
to
avoid
dangers.
@
Connector
part
number
£03830-001
(Assembly
diagram
No.
43)
@
Tools
Do
not
use
those
(small
cutting
pliers,
etc.)
other
than
regular
tools.
@
Replacement
1.
Cut
both
the
power
cord
and
the
primary
lead
wire
at
near
the
edge
of
the
connector
to
be
replaced.
NOTE:
Do
not
re-use
the
used
connector.
2.
Peel
off
the
coverings
so
that
the
respective
conductor
tops
appear
by
about
15
mm.
NOTE:
In
the
case
of
stranded
wires,
twist
each
wire.
3.
Adjust
the
tips
of
the
power
cord
and
the
primary
lead
wire
with
each
other,
then
securely
insert
them
into
the
connector.
4.
Secure
the
nearly
equal
central
part
of
the
metal
sleeve
with
the
second
concave
(2.0)
of
the
tool
for
solderless
securing
as
shown
on
the
left.
NOTE:
Perform
a
complete
securing.
5.
After
solderless
securing,
check
the
following
four
points
shown
6).
7.
Connections
Diagram
‘$a142UNOD
1aYyIO
404
WesHeIp
JeWaYIS
aag
QL-Y5F
No,
2522
EL
‘Big
“epeueg
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10}
Ajuo
si
WesBeIp
siy|
=:
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SSA-10
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or
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auvoa‘o
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(1'v3d34)
0°37
z
+
viz
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Meas
as
€
ree
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zd
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SNIALS
£
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9
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ONILVASILNY
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8.
Exploded
Views
and
Parts
List
8-(1)
Platter
and
Cabinet
yf
|
|e
f
ue!
PRONG
Tonearm
base
Motor
base
Caution:
5
When
removing
the
motor
base
or
tone-
arm
ensure
positive
contact
with
the
tonearm
base
as
shown
in
the
right,
Fig.
14B,
and
then
secure,
‘
P
Correct
‘oor
Poor
Fig.
148
OL-Y5F
No,
2522
—15—-
nC
ee
DL-ED92950
E10405-003
SHSA3014N
See
page
24,
Sect.
13
E66810-001
Description
Cabinet
Ass‘y
Base
Screw
Tonearm
Ass’y
Holder
Screw
Screw
Item
No.|Part
Number
|
Rating
Description.
Shield
Cover
Power
Cord
A\
Strain
Relief
Bracket
See
page
24,
Sect.
Lug
Strip
Ass‘y
AV
See
page
24,
Sect.
Voltage
Selector
A\
See
page
24,
Sect.
Fuse
A\
SBSB3008Z
See
page
24,
Sect.
13
P.C.
Board
Add’y
E35263-001
Dust
Cover
Assy
GBSB30082Z
Screw
See
page
24,
Sect.
|
Bottom
Cover
Ass’y
See
page
24,
Sect.
13
Power
Transformer
|A\
See
page
24,
Sect.
Barrier
Plate
£61824-002
E66885-001
E65921-003
M9380
E65922-005
E23112-002
E23326-003
E03724-002G
A27355
QMLO0002-051
Cushion
Transformer
Plate
Screw
Motor
Ass‘y
Screw
Turntable
Turntable
Covering
Signal
Cord
Cord
Stopper
Lug
Strip
Ass’y
MRSP2713M
Screw
See
page
24,
Sect.
Foot
Ass'y
See
page
24,
Sect.
Mask
Cap
E61992-003
Hinge
Ass‘y
|SDSP3008M
Screw
E65588-001
Lock
Plate
SBSA3016M
Screw
See
page
24,
Sect.
Connector
/\,
A\:
Safety
parts
3
E300585-003
/
Window
Le
6}E300650.004
Pushbutton
Ass’y
S
|
S7LN221RP
|
LED
\
A
64
66807-002
Rubber
Sheet
6
£300584-001
LED
Bracket
:
a
004:
59
EWS012
Pushbutton
Socket
Wire
Ass‘y
S
Ass'y
~
52
€66853-001
YS
58
€66805.001]
Stud
ae
Rubber
Spacer
61}E301133-001A
Circuit
Board
§)}E23294-001
Panel
_
65)LN321GP
Sy
LE
E66867-004
Pushbutton
Ass‘y
55
€300651-001
4
Pushbutton
Ass’y
a
EwS016-022
Socket
Wire
Ass’
y|
2
7
LPSP3006ZS
Screw
$9E300588-001
Switch
Holder
6%
€66805-001
46
£300650-002
l
Rubber
oY
~
Ass'y
(68
€301133-0018
Circuit
Board
70
LPSP3006ZS
me
/
6273011
sored
¢
Circuit
Board
SD
4
60
EWSO12-036
Socket
Wire
Ass'y
Screw
62
€66853-001
é
52:E66853-001
Stug
Stud
70
LPsP3006ZS
Screw
Fig.
15
7)E300587-001
Switch
Holder
JOLPSP3006ZS
Screw
QL-Y5F
—16—
No.
2522
8-(3)
Tonearm
Ass’y
£66933-001
Screw
€66910-001
c
€66997-001
Main
Weight
E300673-001
Volume
Knob
£300670-001
|
Knob
Ass’y
E£35991-002
Head
Shell
Ass’y
£300679-001
Coil
Cover
OT-Z1EB
Needle
Ass’y
MD-1025EB
Cartridge
Caution:
Some
part
numbers
and
names
are
not
Fig.
16
on
the
list
this
is
because
it is
difficult
to
take
them
apart
and
repair
them.
The
respective
models
for
U.S.A.,
Canada
and
U.K.
are
not
supplied
with
the
cartridge
(MD-1025EB)
and
needle
ass’y
(DT-Z1EB).
QL-YSF
No.
2522
-17-
9.
TXX-270
Printed
Circuit
Board
Ass’y
and
Parts
List
SL
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QL-Y5F
No.
2522
x
FSi
Table of contents
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