JVC QL-5 User manual
JVC
MODEL
QL'5
aie
DIRECT
DRIVE
TURNTABL
No.
2428
NOV.
1977
Contents
1.
Specifications
....
2.
Service
Precautions
.
é
3.
Features
........
z
: :
3
4.
“How
to
Operate”
(Names
&
Functions)
3
5.
Block
Diagrams
BAT)
Servomiotor
Control
Syste
aee:ciciwreiasis
Hops
auseaw
nae
Maisie
waresinseedyae
alt
4
5-(2)
1802
Integrated
Circuits
and
Waveforms
..........-200
cs
eeee cece
eens
5
6.
Troubleshooting
6-(1)
Platter
does
not
rotate
6
6-(2)
Platter
rotates
at
a
high
speed
.......
--
6
6-(3)
Rotation
is
not
locked
to
the
crystal
oscillator
frequency
.............00-0
000
7
7.
Parts
Replacement
TU):
:
Stylus
Rap
lacehieNnt
«aa
setviecestwoeanciidvisn
vk
ids
thea
mews
SOLAR
¥
8
FA)
Cartridge
Replacdenent’S<.075,5.5:5-a0«,aysip-ee
65
Sate,
Sie
Melee
HE
Se
OF
Qaeda
oar
aaeoa
s
8
8.
Adjustment
Procedures
Servomotor
Control
Section
8-(1)
Power
Supply
Voltage
Check
2
9
8-(2)
Lock
Adjustment
F
og:
8-(3)
Brake
Mechanism
Adjustment
.............00-
00
ccc
eee
ceecceecceuceas
10
Tonearm
Section
8:(4))
Tonsatin:
Height
Adpistnetitecc.
via
catia
Loa
5G
Pisww
US
Fa
Sk
NOES
ad
Mees
8-(5)
Arm
Lifter
Height
Adjustment..............
8-(6)
Overhang
Adjustment
8-(7)
Headshell
Angle
Adjustment
8-8)
Tracking
Force
Adjustment
a
8-(9)
Anti-skating
Adjustment
.................
8-(10)
Arm-rest
Height
Ajustment
9.
Lubrication
cccncawes
cis
ve
esevee
10.
Exploded
Views
and
Parts
List
10-(1)
Servomotor
Control
and
Cabinet
Ass'y
............
10-(2)
Parts
List
with
Specified
Numbers
for
Designated
Areas
.
IONS),
TONDSNTAR’Y
o.2.5:5.
sraieiciain
srecarcaie
aaavare
wie
eitelab
alieaels
du
reus
ate
ECW
os
DEB
11.
Printed
Circuit
Board
Ass’y
and
Parts
List
11-(1)
TXX-101
Servomotor
Control
P.C.
Board
Ass’y..
2.0...
eee
ee
eee
eee
11-(2)
TSC-80F
(GBS)
Power
Supply
P.C.
Board
Ass’y
. .
12.
Schematic
Diagram
....
2.2...
2000
eee
e
cece
eeeeee
13.
Packing
Materials
and
Part
Numbers
.
14.
Accessories
List
. .
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
on
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
the
desired
voltage
marked
on
the
switch
is
positioned
underneath
the
arrow
marked
on
the
rear
panel
or
the
chassis.
The
voltage
selector
switch
accom-
modates
up
to
three
turns
in
either
direction.
OL-5
No.
2428
—1—
1.
Specifications
Motor
section
Motor
Drive
system
Speeds
Wow
and
flutter
Rumble
Speed
detection
Starting
torque
Speed
deviation
Load
characteristics
Drift
per
hour
Power
characteristics
Temperature
characteristics
Platter
Quick
stop
time
Tonearm
section
Type
Effective
length
Tracking
error
Overhang
Tracking
force
range
Weight
range
(including
headshell)
Height
range
Mechanisms
equipped
:
12-pole,
24-slot,
DC
type
FG
servomotor
:
Direct
drive
:
33-1/3
and
45
rpm
:
Less
than
0.025
%
(WRMS)
:
More
than
63
dB
(IEC-B)
More
than
73
dB
(DIN-B)
:
Integrated
frequency
generator
:
More
than
0.8
kg-cm
:
Within
0.004
%
:
0
%
(with
100
g
total
tracking
force)
:
0.0001
%/H
10%
(+
10
%)
:
0.00005
%/°C
:
31.2
cm
diameter
:
Within
1.6
seconds
:
T.H,
(Tracing-Hold
system,
static
balance),
New
Gimbal
Support
2245
mm
:+1°48"
-1°31'
215mm
:0—34g
(0.25
grams
division,
direct
reading)
:
14.5
—
22
g
(Headshell
10
g)
:
39
—
51
mm
(present
to
43
mm)
:
Oil-damped
arm
elevator
Anti-skating
system
Headshell
mounting
angle
fine
adjustment
possible
Cartridge
section
(not
provided
on
units
for
U.S.A.,
Canada
and
the
U.K.)
Type
Stylus
Optimum
tracking
force
Output
Frequency
response
Separation
Load
Resistance
Compliance
General
Dimensions
Weight
Power
Specifications
:
Moving
Magnet
(Cartridge
body:
MD-1025)
:0.3
x
0.7
mil.
diamond
(DT-Z1TE)
:2
grams
:3
mV
(1
kHz)
:
10
to
25
000
Hz
:
More
than
25
dB
(1
kHz)
(with
test
record
TRS-1)
:
47
k
ohms
:10
x
10°
cm/dyne
(Dynamic)
30
x
10°
cm/dyne
(Static)
:
16.5
(H)
x
48.1
(W)
x
40.3
(D)
cm
(with
cover
closed)
(6-1/2”
x
18-15/16"
x
15-7/8")
(Since
the
dimensions
show
only
the
design
measurements,
consideration
is
required
when
installing
the
unit
in
a
limited
space
such
as
a
rack.)
2
10.5
kg
(23.1
Ibs)
(without
corrugated
cardboard
case)
Countries
U.S.A.
&
CANADA
CONTINENTAL
EUROPE
U.K.
&
AUSTRALIA
U.S.
MILITARY
MARKET
OTHER
AREAS
Line
Voltage
&
Frequency
Power
Consumption
AC
120
V,
60
Hz
12
watts
AC
220
V,
50
Hz
12
watts
AC
240
V,50
Hz
12
watts
AC
110,
120,
220,
240
V
|
Selectable,
50/60
Hz
|
twats
|
AC
110,
120,
220,
240
V
Selectable,
50/60
Hz
Tewari
QL-5
No.
2428
2.
Service
Precautions
1.
Be
sure
to
place
the
unit
on
a
level
surface
when
adjust-
ing
motor
rotation.
.
In
servicing,
do
not
use
parts
other
than
those
specified.
.
Be
careful
not
to
damage
the
motor
shaft
when
repairing
the
motor
unit.
4.
When
the
heatsink
(including
X820)
is
removed
from
the
motor
board
to
permit
repair
of
the
citcuit
board,
the
transistor
temperature
may
increase
due
to
the
lack
ON
3.
Features
@
Quartz-locked
speed
control
system
@
FG
servomotor
assures
optimal
torque
(starting
torque
0.8
kg-cm).
©
Heavy
aluminum
die-cast
platter
of
2
kg
cover
included
Inertia
mass
280
kg-cm?.
of
heat
radiation,
Attach
an
aluminum
plate
(approx.
100
(W)
x
100
(D)
x
1
(H)
mm
to
the
motor
board).
If
noise
is
produced
when
the
knobs
are
turned
or
re-
placed,
apply
white
grease
or
a
small
amount
of
silicon
(50
000
unit,
a
quarter
of
a
drop)
on
the
knob
shafts
and
the
moving
parts
of
the
spring.
Note:
Resin
of
the
knob
may
be
damaged
if
lubricating
oils
other
than
those
specified
are
used.
Cartridge
it
elliptical
stylus
employed.
(Z-1TE)
Quick
stop
mecanism
equipped.
Highly
sensitive,
New
Gimbal
Suppot
Tonearm
with
an
effective
length
of
245
mm
employed.
4.
“How
to
Operate”
(Names
and
Functions)
POWER
switch
Turn
the
power
switch
ON.
Stroboscope
lamp
lights.
Speed
select/STOP
knob
Turn
the
knob
to
align
the
index
line
on
the
knob
with
“33”
or
“45”,
depending
on
the
rpm
of
the
record
you
wish
to
play.
33-1/3
rpm
record
(LP)
.
..
"33"
45
rpm
record
(EP)
....
ae
“45%
The
platter
stops
within
one
revolution
when
the
index
line
is
aligned
with
the
“STOP”
position
centered
between
the
“33”
and
“45”
positions.
Anti-skating
knob
The
anti-skating
mechanism
counteracts
the
centripetal
force
which
pulls
the
stylus
towards
the
center
of
the
record
while
the
record
is
playing;
thereby
reducing
the
pressure
on
the
inner
walls
of
the
record
groove.
Arm
lifter
lever
Raise
the
lever
to
lift
the
tonearm,
and
lower
it
for
the
tonearm
to
descend
gently.
Stroboscope
pattern
A
single
stroboscope
pattern
is
equipped
on
the
rim
of
the
platter.
When
the
turntable
rotates
at
either
33-1/3
or
45
rpm,
the
pattern
will
appear
Stationary
to
indicate
that
the
turntable
speed
is
correct.
No.
2428
5.
Block
Diagrams
5-(1)
Servomotor
Control
System
Platter
Waveform
shaper
50
Hz
(at
33-1/3
rpm)
67.5
Hz
(at
45
rpm)
Frequency
generator
Quick-stop
brake
solenoid
Power
switch
Inez
Power
Ise
supply
1235]
G59-504
MHz
circuit
ese
Quartz
crystal
lou
Speed
select
ignal
Ac
Speed
select/
ON-OFF
switch
45
STOP
33
<
=
Fig.
2
QL-5
ayy
es
No.
2428
5-(2)
1C802
Integrated
Circuits
and
Waveforms
Vss
Po
P:
Pz P3
P4
P5 P6
P7
20127
TOP
VIEW
voo[
|o
vss
Qin
PO
Voo
it
5
@
ouT
Pt
Qin
@
v3
10
STAGE
PROGRAM
COUNTER
AN
FG
IN
P2
Qour®
1
Fvs
o
2
P3
TIMING
2
s
GENERATOR
RPG
Fvc
Pas!
P4
&
a
Ld
sT
Fv
a
a
PS
>
a
Fon
SAMPLE
-HOLD
PDS
ko
P6
Le
PDB
P7
|
POC
ST
PD
20/27
~O-©)—
FVs
FVc
DATE
CODE
Fig.
3
Block
Diagram
Fig.
4
Pins
Location
na
0
19
From
oe
oo
Mo
oo
Mo
Bo
|
SM64ISA-4
°
Lo
‘i
7
7
aev
nav
20ms
ADB
Fig.
5
Waveforms
(Pin
1
through
Pin
11)
F/V
section
P/D
section
1
Waveform
at
pin
4,
=
Waveform
at
pin
8,
|
5v
i}
V2
'
ac
1
ft
Waveform
at
pin
5,
f
Waveform
at
pin
11.
epliie
i
|
lv
i
H
Approx.
1.7
Vat
33-13.
1
|
Be
sure
to
obtain
I
the
waveform
H
|
at
pin
13
through
1
Waveform
at
pin
7.
R845,
otherwise
l
i
Vi-Vess
the
IC
may
be
{
=
damaged.
Deviation
at
lock
adjustment
|
Approx.
2.7
V
at
33-1/3.
(this
should
be
within
+
1
msec.)
Fig.
6
Waveforms
(F/V
and
P/D)}
ols
No.
2428
= =
6.
Troubleshooting
6-(1)
Platter
does
rotate
C
Roration
is
not
locked
to
the
crystal
oscillator
frequency.
)
Are
the
pulse
Fectanguler
waveforms
of
50
Hz
and
67.5
Hz
available
at
pin
5
of
1C803?
Is
the
9.504
MHz
oscillation
voltage
present
at
pin
3
of
10802?
Yes
Is
adjustment
with
VR801
or
VR802
effective?
Is
about
normal
rotation
obtained
with
R818
removed?
Are
C805,
VR8O1
and
VR802
correctly
employed?
Readjust__
following
justment
procedure”.
C809,
D801,
C810,
R815
or
1C802
detective
Replace.
Check
1C802
for
defect,
C812
or
C813
for
discon
nection
or
pattern-cut.
816,
R845
or
1C802
defective.
Replace.
6-(2)
Platter
rotates
at
a
high
speed
C
Platter
rotates
at
a
igh
speed.
D)
Does
rotation
stop.
when
pin
1
of
IC803
is
connected
to
ground?
Does
rotation
stop
when
+23.0
V
is
applied
to
the
base
of
transistor
X805
or
X806?
Yes
Transistor
X804,
X805
or
X806
is
short-circuited
be-
tween
collector
and
emitter.
Apply
+23.0
V
to
the
base
of
transistor
X805
or
X806
and
stop
operation
of
the
drive
circuit.
Is
FG
output
4
mVp-p
present
when
the
platter
is
rotated
by
hand
at
about
3-1/3
rpm?
Trnasistor
X803_
is
short-
circuited
between
collector
and
emitter.
Broken
connecting
wires
or
faulty
soldering.
Check
for
broken
patterns
or
faulty
soldering
is
2
Vp-p
output
present
at
pin
7
of
1801
when
the
platter
is
rotated
by
hand
at
about
33-1/3
rpm?,
Is
23.0
V
available
at
pin
8
of
IC801
Is
the
waveform
present
at
TP-3
as
shown
in
wiring
diagram
1?
Yes
Check
connection
or
solder
ing
of
1C802.
Is
FG
output
as
specified?
Is
2
Vp-p
output
present
at
7
of
10801?
Check
motor
or
replace
1801
Is
the
rectangular
waveform
of
23
V
at
pin
1
of
C801
available
when
the
platter
is
rotated,
by
hand
at
about
33-1/3
rpm?
1801
defective
Is
the
rectangular
waveform
of
4.5V
at
TP-3
available
when
the
platter
is
rotated
by
hand
at
about
33-1/3
rmp?
Is
about
DC2.7
V
available
at
pin
7
of
1C802
when
at
about
33-1/3
rpm?
the
platter
rotated
by
hand,
Is
about
0010.9
V
available
at
pin
1
of
1C803
when
the
platter
is
rotated
by
hand
at
about
33-1/3
rpmz,
Check
for
defective
1C801
or
incor
capacitance
of
C808.
Check
for
broken
pattern
or
faulty
soldering
of
R808
and
R809.
Check
for
defective
1C802,
short-circuited
or
open
leads.
1c
Check
for
defective
1C803,
short-circuited
or
open
leads.
IC
Yes
|
Detective
|C801,
incorrect
capacitance
of
C801
or
open
R803
may
be
the
cause.
Normal
QL-5
No.
2428
QL-5
No.
2428
Is23-0.5V
available
at
TP-5
when
the.
Platter
does
not
rotate.
Yes
power
switch
S3
is
turned
on?
1s
a
voltage
present
at
the
collector
of
transistor
X8172,
1s
an
AC
voltage
present
between
lapping
tabs
7
—
8,
Primary
fuse
or
transformer
disconnected.
AC
cord
soldering
defective.
Yes
Transistor
X817
—
X819
or
diode
D811
defective.
Diode
0812
—
D815
open
or
incorrectly
soldered
Hall
elements
open.
Motor
No
disconnected
inside,
dis.
connected
resistors,
Yes
Does
the
platter
rotate
when
6-(3)
Rotation
is
not
locked
to
the
crystal
oscillator
frequency
R820
is
short-circuited?,
Does
platter
rotate
when
pins
6
and
1
of
1C802
are
short-circuited?
Does
the
platter
rotate
‘when
pins
1
and
8
of IC
803
are
short-circuited?
IC8O3
defective
1C802
defective.
Does
platter
rotate
Yes
transistor
X803
are
short-circuited?
Transistor
¥803
is
open
be-
tween
emitter
and
collector.
Does
platter
rotate
by
hand?
1s
output
available
St
voltage
terminals
of
Hall
elements
HG-1
and
HG-2?,
Transistors
X807
—
X814
detective.
Lead
from
circuit
board
to
motor
disconnected.
Check
for
loose
socket,
floating
pattern
fective
soldering
and
de
Yes
Check
for
incorrect
ca
pacitance
or
defective
solder
ing
of
1C801.
Is
the
oscillation
waveform
available
at
TP-3?
Is
transistor
X815,
capacitor
C818,
resistor
R847
of
R848
not
defective?
Yes
Replace
defective
part.
Notes
for
replacement
of
transistors
X811
—
X814
There
are
4
ranks
K1, K2,
L1
and
L2
for
2
SD571
transistor
h
FE.
Be
sure
to
use
those
transistors
of
the
same
ranking
when
replacing.
7.
Parts
Replacement
7-(1)
Stylus
Replacement
Replacement
of
the
stylus
can
be
easily
made
by
simply
inserting
the
stylus
plug
(A)
into
the
jack
(B)
of
the
cartridge.
Service
life
of
the
stylus
employed
for
this
unit
is
generally
as
follows,
varying,
depending
on
the
record
conditions:
(dirty
record
groove
etc.).
Stereo
LP
record
(30
cm)
Approx,
300
—
500
hours
Styli
are
disposable
items.
Therefore,
it
is
recommended
to
buy
a
supply
of
styli
when
you
buying
the
unit.
When
purchasing
them,
specify
the
DT-Z1TE
(JVC,
standard).
Styli
approximating
DT-Z1TE
are
available
on
the
market.
Usage
of
such
styli
may
result
in
a
noisy
and
distorted
sound
reproduction.
Be
careful
to
avoid
their
usage.
Note:
Cartridge
is
not
provided
on
units
for
the
US.A.,
Canada
and
the
United
Kingdom.
7-(2)
Cartridge
Replacement
Removal
and
mounting
of
the
headshell
(Fig.
8)
Turn
the
connector
nut
in
the
direction
of
“A”
to
remove
the
headshell
from
the
tonearm.
Turn
it
in
the
direction
of
“B"
for
mounting
the
headshell.
Cartridge
replacement
(Fig.
9)
1.
Remove
the
2
screws
securing
the
cartridge
on
the
headshell.
2.
Reinstall
a
cartridge
onto
the
headshell.
3.
The
four
cartridge
lead
wires
are
colour-coded
as
follows:
Connect
them
correctly.
White
(+)
.
Blue
(-)..
Red
(+)
.
Green
(—)
.
4.
Mount
the
cartridge
properly
onto
the
headshell
and
leave
the
set
screws
slightly
loosened,
then,
after
completing
the
“‘Overhang
adjustment”,
tighten
them
firmly.
5.
After
each
cartridge
replacement,
be
sure
to
perform
tracking
force
and
overhang
adjustments.
Note:
If
a
heavy
cartridge
or
headshell
is
employed,
‘Zero
balance’’
may
not
be
obtained
with
the
specified
counterweight.
In
this
case,
use
an
optional
counterweight.
(SW-71,
for
cartridge
of
14.5
~
22g
including
head-
shell)
(SW-37,
for
cartridge
of
24
~
37
g
including
head-
shell)
Stylus
Tonearm
fw
Connector
nut
Headshell
Fig.
8
Cartridge
securing
——T
®
=
Headshell
Blue
(LE)
White
(L)
Green
(RE)
er
UY
Red
(R)
‘a
Cartridge
e
Se.
Nut
Cover
pe
Fig.
9
QL-5
No.
2428
8.
Adjustment
Procedures
Servomotor
Control Section
8-(1)
Power
Supply
Voltage
Check
1.
Disconnect
the
motor
socket
from
the
circuit
board.
Turn
the
power
switch
on.
(Confirm
that
the
rated
voltage
is
applied
to
the
unit.)
Set
the
speed
select
switch
to
33-1/3.
Confirm
that
23
+
0.5
V
DC
is
present
at
TP-5.
If
the
voltage
is
deviate
from
that
range,
adjust
with
the
semi-fixed
resistor
VR803
(1
k&2).
2.
Confirm
that
the
voltage
difference
at
TP-5
is
less
than
-1V_
when
the
speed
select/on-off
switch
is
set
at
STOP.
8-(2)
Lock
Adjustment
1)
With
dual
beam
oscilloscope
1.
Connect
the
motor
socket
to
the
circuit
board.
Connect
the
dual
beam
oscilloscope
to
TP-3,
TP-4.
Obtain
a
turntable
speed
of
45
rpm
by
setting
the
speed
select
switch
to
45,
then
adjust
the
semi-fixed
resistor
VR801
(100
kQ)
until
the
following
waveforms
are
obtained.
1
14.8ms
(20ms))
co...
!
i
1
IL
oo
ls
~at—
Adjust
to
get
a
difference
of
within
+
1
msec
from
TP-4,
Fig.
10
2.
Obtain
a
turntable
speed
fo
33-1/3
rpm
by
setting
the
speed
select
switch
to
33-1/3,
then
adjust
the
semi-
fixed
resistor
VR802
(47k)
until
the
difference
between
TP-3
and
TP-4
is
within
+
1
msec.
QL-5
No.
2428
2)
With
single
beam
oscilloscope
Connect
the
single
beam
oscilloscope
to
TP-3,
TP-4
as
shown
in
Fig.
11
below.
Adjust
until
the
waveforms
shown
in
Fig.
12
are
obtained.
Connection
diagram
TP-3)
ma Ma
TR=4
Single
beam
oscilloscope
Fig.
11
Perfectly
locked
|
|
Lock
adjustment
is
improper.
Out
of
lock
in
the
direction
opposite
to
the
diagrams
above,
Out
of
lock
This
part
appears
to
flow.
Fig.
12
8-(3)
Brake
Mechanism
Adjustment
A
brake
lining
is
employed
to
stop
the
platter.
A
worn
brake
lining
will
result
in
the
platter
not
stopping
quickly
or
stopping
with
abnormal
noise.
If
these
troubles
occur,
adjust
as
described
below.
@
The
platter
makes
a
noisy
stop.
1.
Brush
the
friction
surface
of
the
brake
lining,
which
contacts
the
platter,
with
a
brush
several
times.
Refer
to
Fig.
13.
2.
Carefully
wipe
the
inner
platter
surface,
which
contacts
the
brake
lining,
with
a
soft
cloth
(such
as
gauze)
dipped
in
alcohol.
@
The
platter
does
not
stop
correctly
due
to
a
defective
Fig.
13
brake.
(The
platter
does
not
stop
within
one
rotation.)
When
the
brake
lining
is
worn
out.
1.
Completely
remove
the
brake
lining
using
thinner,
then
attach
a
new
lining.
2,
Remove
the
paper
covering
from
the
adhesive
rear
side
of
the
new
brake
lining,
then
attach
the
brake
lining
in
the
previously
attached
position.
3.
Glue
the
brake
rod
to
the
brake
lining
at
the
double
lining
position
(as
shown
by
arrow
A
in
Fig.
15)
with
rubber
cement.
When
the
solenoid
coil
is
improperly
positioned.
1.
Fit
the
brake
lining
inside
the
platter
(The
function
is
the
same
as
a
normal
brake).
Slightly
loosen
the
2
solenoid
mounting
screws,
then
adjust
the
solenoid
coil
position
until
the
clearance
between
the
solenoid
coil
end and
the
plunger
head
is
9mm,
(Refer
to
Fig.
14.)
After
the
adjustment,
be
sure
to
re-tighten
the
screws
firmly
(Refer
to
Fig.
15).
e
How
to
use
the
brake
clearance
adjusting
boss
B.
(Refer
to
Fig.
15)
When
replacing
the
brake
rod
with
a
new
one,
turn
the
boss
fully
counterclockwise,
then
mount
new
brake
rod.
After
mounting
the
brake
rod,
gradually
turn
the
boss
clockwise
(This
narrows
the
clearance
between
the
platter
and
the
brake
lining)
until
the
contact
sound
of
the
brake
lining
and
platter
is
eliminated
when
the
platter
is
stopped
by
touching
the
stop
switch.
Finally,
confirm
that
the
brake
lining
does
not
contact
—
eat
the
platter,
while
the
platter
is
rotating
at
the
speed
TAGUAIAQ
SIH
33-1/3
or
45
rpm,
by
noting
the
sound
and
observing
the
stroboscope.
If
the
platter
contacts
the
brake
lining
during
rotation,
turn
the
boss
counterclockwise
to
increase
the
clearance
between
the
brake
lining
and
platter.
After
replacing
the
brake
rod,
be
sure
to
apply
a
drop
of
silicone
(in
the
order
of
million
unit)
to
the
part
of
the
motor
board
stud
which
contacts
the
brake
rod.
Fig.
15
QL-5
=10i=
No.
2428
QL-5
Tonearm
Section
Adjustment
The
following
adjustments
should
be
performed
only
when
replacing
a
cartridge
or
a
headshell.
Otherwise,
no
adjustment
is
required.
Note:If
necessary
to
replace
a
cartridge,
usage
of
that
headshell
exclusive
to
this
unit
is
recommended.
8-(4)
Tonearm
Height
Adjustment
Mount
the
cartridge
on
the
headshell.
Loosen
the
2
tone-
arm
securing
screws
with
a
screwdriver,
then
adjust
the
tonearm
height
until
the
tonearm
is
horizontal,
with
the
stylus
tip
at
approximately
the
same
level
as
the
disc
surface.
Be
sure
to
re-tighten
the
2
tonearm
securing
screws
after
the
adjustment.
(No
adjustment
is
necessary
for
European
models
which
are
equipped
with
the
Z-1S
tonearm.
8-(5)
Arm
Lifter
Height
Adjustment
When
the
tonearm
is
raised
with
the
arm
lifter
lever,
optimum
clearance
between
the
stylus
and
the
disc
surface
is
8mm.
If
no
clearance
exists
between
the
tonearm
and
arm
lifter
during
play,
proper
disc
play
will
not
be
obtained.
With
the
arm
lifter
raised,
loosen
the
lifter
bracket
securing
screw
with
a
screwdriver.
Adjsut
the
arm
lifter
height
until
the
clearance
between
the
stylus
tip
and
the
disc
surface
is
8
mm.
8-(6)
Overhang
Adjustment
An
overhang
indicator
convenient
for
overhang
adjustment
is
provided
for
the
model
QL-5.
Fit
the
overhang
indicator
onto
the
turntable
spindle
with
the
arrow-shaped
end
pointing
toward
the
tonearm
pivot.
Move
the
tonearm
and
place
the
stylus
over
the
overhang
indicator.
(Be
sure,
the
tonearm
is
in
the
up
position.)
One
digit
on
the
overhang
indicator
represents
1
mm
overhang.
Slide
the
cartridge
adjusting
the
overhang
until
the
stylus
points
to
15
mm
(marked
by
“4”
between
10
and
20
mm).
Be
sure
to
secure
the
cartridge
to
the
headshell
after
the
adjustment.
Errors
within
2
—
3
mm
are
negligible
from
the
practical
point
of
view.
8-(7)
Headshell
Angle
Adjustment
If
the
stylus
tip
is
not
perpendicular
to
the
surface
of
the
disc,
loosen
the
lock
screws
on
the
lower
side
of
the
tone-
arm,
with
a
small
screwdriver,
then
adjust
the
headshell
until
it
is
parallel
with
the
platter.
Be
sure
to
re-tighten
the
screws
after
the
adjustment
is
completed.
For
reference
Purposes,
measurement
by
eye
is
sufficient.
No.
2428
Lifter
bracket
securing
screw
\
Tonearm
securing
screws
(2
lock
screws)
Fig.
16
Overhang
indicator
90
ef
Disc
surface
SS
Fig.
17
Lock
screws
Fig.
18
8-(8)
Tracking
Force
Adjustment
1.
Turn
the
anti-skating
knob
until
the
“0”
mark
on
the
anti-skating
dial
is
aligned
with
the
index
line.
2.
Place
a
record
on
the
platter.
3.
Remove
the
stylus
protector.
4.
Release
the
tonearm
clamp.
5.
Turn
the
counterweight
until
the
tonearm
maintains
a
balance
with
the
stylus
tip
on
the
same
level
as
the
record
surface.
(Zero
balance)
6.
Return
the
tonearm
to
the
rest
and
clamp
it.
7.
Holding
the
counterweight
at
the
adjusted
position,
turn
the
tracking
force
dial
until
the
“0”
mark
is
aligned
with
the
index
line.
8.
Now,
turn
the
counterweight
until
“2’’
on
the
dial
is
aligned
wiht
the
index
line
since
the
optimum
tracking
force
with
this
turntable
is
2
grams.
8-(9)
Anti-skating
adjustment
Turn
the
anti-skating
adjustment
knob
until
the
same
value
as
the
optimum
tracking
force
(“2”)
is
aligned
with
the
index
line.
8-(10)
Arm-rest
Height
Adjustment
Adjust
the
arm-rest
height
until
the
tonearm
is
horizontal
when
the
tonearm
clamped
on
the
rest.
Be
sure
to
retighten
the
arm-rest
securing
screw
after
the
adjustment
Note:
Confirm
that
the
arm
lift
point
does
not
touch
the
arm
lifter
when
the
tonearm
is
clamped
on
the
rest
and
the
arm
lifter
lever
is
raised.
=
f=
Anti-skating
knob
Counterweight
Index
line
4
counterweight
Tracking
force
dial
Stylus
protector
Index
line
Turning
the
counterweight
in
the
“A”
direction
decreases
the
tracking
force,
whereas
he
B"
direction
increases
the
tracking
force.
Turning
racking
force
dial
only
has
no
effect
on
the
tracking
force
Fig.
19
Counterweight
_
ifreg
lever
Fig.
20
QL-5
No.
2428
9.
Lubrication
The
direct
drive
motor
employd
in
this
unit
does
not
require
the
lubrication.
10.
Exploded
Views
and
Parts
List
10-(1)
Servomotor
Control
and
Cabinet
Ass’y
QL-5
No.
2428
—13-—
Parts
List
Item
No.|
Part
Number
Description
Item
No.|Part
Number
|
Description
1
See
page
15.
Motor
Board
36
WBS6000N
Washer
2
E65005-001
Shaft
37
NTS6000Z
Nut
3
WLS4000M
Washer
38
E60741-001
Arm
Rest
Ass‘y
4
|
NTB4000S
Nut
39
E34600-001
Tonearm
Base
5
E10203-002
Base
Ass'y
40
|
Q03091-111
Washer
6
£61983-002
Color
Screen
41
SBSB3010Z
Tapping
Screw
7
SBSB3008Z
Tapping
Screw
42
|
E34772-002
Shield
Cover
8
|
M935A
Motor
Ass’y
43
|
52868-3
Terminal
Lug
9
SPST3008ZS
Screw
44
SBSA3012Z
Tapping
Screw
10
See
page
15.
Servomotor
Control
45
See
page
15.
Tonearm
Ass’y
7
P.C.
Board
Ass'y
46
|
£6144-001
Screw
-
11
|
Seepage
15.
|
Power
Transformer/\,
47
|
SPSP2606N
-
12
£61132-001
Cusion
48
£03724-001
Signal
Cord
Ass’y
13
E61133-001
Holder
49
QML1010-051
|
Lug
Strip
Ass’y
14
SBSB4016N
_|
Tapping
Screw
50
__|
See
page
15.
Foot
Ass’y
"
15
LPSP3005NS
Screw
51
£22517-001
Bottom
Board
Ass‘y
16
E61407-001
Brake
Lever
Ass’y
£22516-001
|
Bottom
Board
7
REESO0O
|
“E’
Typed
Washer
|
£65007-001
|
Protector
18
E61409-001
DC
Solenoid
SBSB3008Z
|
Tapping
Screw
19
_|
LPSP3012ZS
_|
Ass’y
Screw
52__|
SBSA3016Z
*
20
|
NNZ3000S
Nut
53
[E22512-001
Platter
21
E61980-001
Screw
54
See
page
15.
Platter
Covering
22
E35281-001
Knob
(Power
Switch)
Ass’y
55
£50670-005
Wire
Clamp
23
REE3000
“E”
Typed
Washer
56
|
See
page
15.
Rating
Plate
24
E65011-001
Knob
Ass’y
57
£61998-001
Seal
Paper
25
£60488-001
|.
Spring
58
£61651-001
Caution
Label
26
|
G41505-5
Steel
Ball
59
|
£61466-001
Heatsink
(25D325)
27
|
QSM1V01-003
|
Micro
Switch
60
|
WSS3000N
Washer
28
SBSB3030Z
|
Tapping
Screw
61
2SD325(D,E)
|
Power
Transistor
29
SBSB3016Z
pera
5
ne
ae
os
62
__
See
page
15.
P.C.
Board
Ass’y
30
See
page
15.
Power
Cord
with
Plug"
63
See
page
15.
wn
31
See
page
15.
Cord
Clamp
64
£49447-002
Shaft
32
See
page
15.
Cabinet
Ass‘y
65
See
page
15.
P.C.
Board
Assy
33
E35263-002
Dust
Cover
Ass’y
66
=|
See
page
15.
Micro
Switch
|__ED20946-005|
Dust
Cover
_67
See
page15.
|
Fuse
Label
|
E£61992-001
|
Hinge
Ass’y
68
See
page
15.
Voltage
Selector
/
y
SDSP3008M
|
Screw
69
See
page
15.
Power
Supply
P.C.
Board
34
|
MSSP3102M
M
|
Ass‘y
35.
|
£61339-002
Rest
Stand
Ass’y
|
70
See
page
15.
Fastener
NoTE
/\
:
SAFETY
PARTS
QL
4
No.
2428
10-(2)
Parts
List
with
Specified
Numbers
for
Designated
Areas
For
U.S.
Military
Item
For
U.S.A.
Market
and
Other
No.
Description
and
Canada
For
Europe
For
U.K.
For
Australia
Countries
1
|
Motor
Board
£22811-001
|
€22511-003
|
€22511-003
£22511.003
|
£22511.002
10,62,
|
Servomotor
Control
TXX-101B
|
TXX-4Q1E
|
TXX-101E
TXX-101E
|
TXX-101D
63,65.
|
P.C.
Board
Ass'y
(USA)
TXX-101C
(Canada)
W
Power
Transformer
£03032-24C
£03032-24E
£03032-24EBS
£03032-24E
|
£03032-24D
30
|
Power
Cord
with
PlugA\
QmP1200-244
|
OMP3910-244
QMP9017.0078S
|
QMP2500-200
|
AMP1200-244
31
|
Cord
Clamp
QHS3876-162
|
A37897
|
37897
37897
37897
32
|
Cabinet
Ass'y
DL-ED92769
|
DL-ED92769
|
DL-ED92770
—_|
DL-ED92769
|
DL-ED92769
45
|
Tonearm
Ass'y
ARM524
MP-186S
ARM524 ARM524
MP-186S
50
|
Foot
Ass’y
35280002
£35280.001_
|
£35280.001
£35280.001
|
£35280.001
54
|
Platter
Covering
22719002
£22719-001_
|
€22719.001 £22719.001
|
£22719.001
56
—_|
Rating
Plate
&
Label
£35064.011
£35339.004
|
£35339.0068S
|
E35339.005A
|
£35339.003P
(USA)
(US.
Military)
£49273.012
£35339-002U
(Canada)
(Other
Countries)
66
|
Micro
SwitehA\
QSM1V01.023]
QsM1Vv12-101
|
QSM1V12-101BS
|
ASM1V12-101|
QSM1V01-023
67
Fuse
Label
£61378-008
-
-
-
j
-
(USA)
£61801.008
(Canada)
68
|
Voltage
SelectorA\
- -
- -
QSR0085-001
69
|
Power
Supply
P.C.
Board
Ass'y
A\
-
TSC-80F
TSC-80GBS
TSC-80F
=
70
|
Fastener
-
£35422.001
|
£35422.001
£36422.001
=
91
Fastener
-
E35422.001
£35422001
£35422-001
-
92
|
Stopper
Bracket
£65431.001
-
ie os
=
note
/\
:
SAFETY
PARTS
10-(3)
Tonearm
Ass’y
7
£60540-001
Screw
or-ziTEs)—-
Stylus
PHS
Headshell
Ass’y
(78)
£34265-0
MD1025
a
Cartridge
©—fo#
£34268.001
@—9
Stylus
Protector
QL-5
No,
2428
~~)
(ss
TF
€60576.001
Lift
Arm
Ass'y
25)
€22151-003
Tonearm
Body
Ass'y
Headshell
Body
7)
roy
£34283.003
83)
Arm
Lifter
Ass'y
£60501-001
4
Colored
Wires
Ass'y
Fig.
22
-~15—
cs
qpE22514-001
/
Tonearm
Ass'y
ac)
€35262-001
Counterweight
Ass'y
°7DE61170-001
Screw
11.
Printed
Circuit
Board
Ass’y
and
Parts
List
11-(1)
TXX-101
Servomotor
Control
P.
C.
Board
Ass’y
A
X817
2SD325D,E
©
@
®
2SC945RQ
FUSE
0.34
4
Notes:
1.
Voltage
values
in
HBB
indicates
ground,
indicates
the
others.
The
assembly
varies
according
to
the
area
where
the
units
is
sold.
Refer
to
the
table
shown
on
page
20.
Bod
o
@
D814
5
sear)
©
€820.0.00)
=f6~
s
“|
ao
oa
R830
0803
44
220u/50V
R849
es
100K
18247,
R85)
g)
i<
220u/50V,0
ies
VR801
KF
00K
D804
D805
D806:808
0816
Se
ae
®@
SR103C
X6
are
measured
with
a
tester
(impedance
20
k{2/V)
without
a
signal
applied
to
the
unit.
indicates
positive
B
power
supply.
C803
10P.
804...)
Ww8s0
10K.
=
NN
—
R803
10u/16V.
a
ri
10u/I6V
W805
801
809, SIBI
C826,
/50V
2SD571L,K
2SA733P,Q
2SA733R,Q
3)
OD
ihoos
2SAT33R.Q
QL-5
No,
2428
Transistors
|
Rating
ste
Item
No.
Part
Number
Po
#
Description
Maker
X801
2SA733
(P,
Q)
250
mw
180
MHz
Silicon
Mitsubishi
|
X802
2SD571
(L,
K)
800
mw
110
MHz
#
N.E.C.
X803
2SC945
(P,
Q)
250
mw
250
MHz
si
Mitsubishi
X804
2SA733
(P,
Q)
.
180
MHz
=,
iS
X805
_|
2SA733
(P,
Q)
z
re
ale
a
x
_|
X806
2SA733
(P,
Q)
-
7
ee
¥
X807
2SA733
(P,
Q)
re
i x
Ne
X808
2SA733
(P,
Q)
i“
bs of
-
X809
2SA733
(P,
OQ)
<
‘i
|_X810
_2SA733
(P,Q)
7
“2
aod
:
X811
2SD571
(L,
K)
800
mw
110
MHz
.
N.E.C.
X812
2SD571
(L,
K)
ae
vi
a
id
X813
2SD571
(L,
K)
né
Hi
7
i
X814
2SD571
(L,
K)
ne
je
a
Mh
X817
2SD325
(D,
E)
10
W
8
MHz
ek
Sanyo
X818
2SC945
(P,
Q)
250
mw
250
MHz
2
Mitsubishi
X819
2SC945
(P,
Q)
vs
i
“a zi
Integrated
Circuits
Item
No.
Part
Number
]
Rating
Description
Maker
1C801
NJM4558D-D
[
1c.
Shin
Nihon
Musen
|
1C802
SM6415A-4S,
we
Nihon
Precision
Circuits:
1C803
NJM4558D
ad
Shin
Nihon
Musen
Diodes
Item
No.
Part
Number
Rating
Description
M
Maker
D801
182473
Silicon
Toyo
Dengu
D802
182473
*
i
D803
182473
i
ii
D804
SR103C
L.E.D.
N.E.C.
D805
SR103C
|
us
—
i
|
D806
SR103C
s
e
D807
VD1121
Varistor
w
D808
SR103C
L.E.D.
A
D809
$1B01-02
Silicon
Fuji
Denki
D811
RD5,6EC
Zener
:
N.E.C.
D812
S1B01-02
Silicon
Fuji
Denki
D813
SIBO1-02
+
2
D814
SIBO1-02
2
a
D815
S1B01-02
sid
bg
D816
SR103C
a
N.E.C.
D817
182473
Silicon
Toyo
Dengu
QL-5
—
18
—
No.
2428
Capacitors
Item
No.
Part
Number
Rating
Description
801
QEW61CA-106Z
1uF
16V
Electrolytic
802
QEW61CA-106Z
ie
Mg
e
C803
QCF31HP-102Z
1000
pF
50
V
Ceramic
c804
QEW61EA-475Z
4.7
ue
25V
Electrolytic
C805
QFM31HJ-823Z
0.082
nF
|
50V
Mylar
C806
QEWS51VA-107Z
100
uF
35V
Electrolytic
—
C807
OCM31HK-223Z
0.022
uF
50
V
Mylar
c808
OCF31HP-223Z
oe
a
Ceramic
809
QFM31HK-104Z
0.1
uF
Mylar
C810
QEW61CA-106Z
10
uF
16
V_
Electrolytic
-
|
c811
QCF31HP-223Z
0.022
uF
50V
Ceramic
=
812
QCT25UJ-100Z
10
pF
ss
c813
QCT25UJ-100Z
is
"
c814
|
QEBS1EM-335
3.3
uF
25V
L.L.C.
Electrolytic
c815
QCF31HP-223Z
0.022
uF
50
V
Ceramic
_
C816
OCF31HP-102Z
1000
pF
"
ix
C817
QCF31HP-223Z
0.022
uF
5
0
C819
QEWS51HA-476Z
47
uF
50V
Electrolytic
c820
QCF31HP-102Z
1000
pF
a
Ceramic
821
QEWS5S1HA-476Z
47
uF
is
Electrolytic
C822
QEWS51HA-227
220
uF
¥
uf
C823
QEWS1HA-227
ie
" e
c824
QCF12HP-103
0.01
uF
500
V
Ceramic
c825
QFH72BM-473M
0.047
uF
AC
125
V
M.
Mylar
Resistors
Item
No.
Part
Number
Rating
Description
R801
QRD141J-103SY
10
kQ
1/4W
Carbon
R802
QRD141J-103SY
u
ze
i
R803
QRD141J-102SY
1k2
Us
is
R804
QRD141J-105SY
1MQ
i
i
|__R805,
_QRD141J-222SY
22kQ
-
—
At
-
R806
QRD141J-102SY
1kQ
a
ae
R807
QRD141J-104SY
100
kQ
n “
R808
QRD141J-103SY
10kQ
te ws
R809
QRD141J-272SY
2.7kQ
@
ef
R810
QRD141J-473SY
47kQ
B
ig
R811
QRD141J-114SY
110
kQ
ie
a
R812
QRD141J-363SY
36
kQ
zu
*
R813
QRD141J-103SY
10kQ
ie
tt
R814
QRD141J-472SY
47kQ
*
¢
R815
QRD141J-134SY
130
kQ
oe
i
R816
ORD141J-682SY
—
6.8k2
iy
R817
QRD141J-472SY
4.7kQ
a
"
R818
QRD141J-334SY
330
kQ
he
a
R819
QRD141J-162SY
1.6kQ
ay ue
R820
QRD141J-202SY
2.0kQ
ia
e
R821
ORD141J-124SY
120
kQ
pe
BF
—
_
R822
QRD141J-182SY
18kQ
ve
R823
QRD141J-102SY
1kQ
a
R824
QRD141J-223SY
22
kQ
te
QL-5
No.
2428
—19—
Resistors
Item
No.
Part
Number
Rating
Description
R825
QRD141J-332SY
3.3kQ2
1/4w
Carbon
R826
QRD141J-332SY
“* mm
“i
R827
|
QRD141J-822SY
8.2kQ
4
a
R828
QRD141J-272SY
2.7k2
2
ia
R829
QRD141J-563SY
56kQ
a
__#
R830
QRD141J-104SY
100
kQ
o
a
R831
QRD141J-104SY
a
oe
R832
QRG129J-470
472
1/2W
Uninflammable
O.M.F.
R833
QRD141J-222SY
2.2kQ
/4w
Carbon
R834
QRD141-682SY_
|
68kQ
|
” a
=
eee
R835
QRD141J-102SY
1kQ
as ig
R836
QRD141J-333SY
33
kQ
=
ig
R837
QRD141J-682SY
6.8
kQ
o
R838
QRD141J-102SY
1kQ
“ig
a
R839
QRD141J-392SY
|
3.9kQ
a
”
-
R840
QRD141J-332SY
3.3kQ
“ i
R841
QRD141J-332SY
¢
‘3
we
R842
QRD141J-181SY
180
2
“A
-
R843
QRG129J-470
47Q
1/2W
Uninflammable
O.M.F.
R844
QRX017J-2R7S
272
|
iw
Uninflammable
a
-
_
R845
QRD141J-103SY
10
kQ
/4W
Carbon
R846
QRD141J-102SY
1kQ
a
Lg
R849
QRD141J-822SY
8.2kQ
xe
=
R850
QRD141J-272SY
2.7kQ
e
ob
R851
QRD141s-392SY
|
39kQ
ae
—_
a
R852
QRD141J-102SY
1kQ
ia
a
R853
QRD141J-103SY
10
kQ
ne
“
VR801
QVZ3501-104
100
kd
Variable
VR802
QVZ3501-473
47kQ
‘oe
VR803
QVP4A0B-102
1kQ
wt
Others
Item
No.
Part
Number
Rating
Description
£03732-012A
Plug
E£04300-003
Quartz
Crystal
E41541-021
Bushing
E45524-001
Contact
Clip
E61466-003
Heatsink
E65125-001
Solenoid
Coil
TXX-101
with
specified
numbers
for
designated
areas
]
TXX-101D
TXX-101E
Item
TXX-101B8
TXX-101C
for
U.S.
Military
Market
|
for
Australia,
U.K.
No.
|
Description
for
U.S.A.
for
Canada
and
Other
Countries
and
European
Countries
825
|
M.Mylar
Capacitor
|
QFH72BM-473M
QFA72BM-473M
QFH53AM473M
:
(0.047
uF/AC
125
V)
|
(0.047
uF/AC
125
V)
|
(0.047
uF/AC
1
kV)
7
P.C.
Board
(Plain)
£22518-002
£22518-002
£22518-005
£22518.003
Fuse
(Secondary)
- -
-
QMF51A2-R50(BS)
(0.5
AT)
Fuse
Clip
= = -
E48965.002
|
Fuse
Label
-
- =
£61381-004
note
A\
:
SAFETY
PARTS
=90—
QL-5
No.
2428
Other JVC Turntable manuals
