JVC JL-A15 User manual

MODEL
L-A15
SEMI-AUTOMATIC
TURNTABLE
No, 2374
April 1976
A

Index
JL-A15
NO) 237 rrr
Page
Setting Opis encc- 534-5 yh. Sy 0 aie pa ee seh Wika pa A a aap Reps aE Aas 8 Me a ea ep edt eke 8 3
Operation of Automatic Mechanism 2... 6 1. ee ee eee eee 3
Ach fUStrri ern ts: a5) ete ets nk are eels Sich a Ste New ea Why, Ea a Re ae a anda, Pea ae aw 4
Cartridge Mounting) 26.2.8 see aha) Se peters Sie ata celersace at ae ea ee te ne ae se i ere ee 5
Lubrication’ i025. ace a tie i a a ee ie ak BR i ee Re AO ee a Wee ga ae ac 5
Exploded: View. of Parts 1. i456 a8 eee ee se Rees eae el la aoe en ele ele ee es See a Ow 6
List of Parts for Replacement 1. «1... 0... ce ee ee ee ee ee wee eae 7
Exploded’ View of Parts’2.. ive cache ik od a a al Se Se ae we eg sd ee ec ce ae 8
List of Parts for Replacement 2. 2.1.2... 0... ee ee ee ee ee es 9
ACCRSSOFIES.. isc eee aie eee eS Bw Wee eG ee eae tee Nera Maas ace Ree ates Whe tn ee: G8! Bde 10
Exploded View of Pick-up . 0... ce ee eee 11
Exploded View of Motor 2. 0... ee ee ee ee ee as 12
Model JL-A15 Schematic Diagram .......... sv Reyti adore ei ac Beha wa yas sarts tipi a = ctgern gies yw OTE a dee regs
Final:Packing Ass*y: sin) dence 5 eres ale, Bale ee A we hh ae ee Por CR ere eas Boe Bates oe e4 14
Specifications 2... 26... . eee ee ees ob ay Ae Testa eile are nk al aut ed oa ar Narcan ease casa? weal ran ara 15
NOTE: (J) U.S.A, (E) Europe
{M) CANADA {A) Australia
(U) Other Areas (B) U.K.
(P) PACEX

Setting
Up
|
Operation
of
Automatic
Mechanism
1.
Remove
main
weight
(A).
2.
Remove
two
platter
protectors
(B),
screw
(C)
and
caution
tag
(D).
Change
cycle
mechanism:
3.
Untie
viny!
ribbon
(E).
1.
During
playing,
the
notch
of
the
main
gear
position
4.
Pass
the
belt
behind
the
shift
lever
and
place
it
on
the
relative
to
the
turntable
spindle
gear
is
as
shown
in
Fig.
motor
pulley.
2.
As
the
projection
is
away
from
the
engagement,
the
5.
Place
the
platter
pat
provided
on
the
turntable
platter.
main
gear
does
not
rotate
even
though
the
turntable.
2.
As
playing
proceeds,
the
trip
slide
moves
toward
the
center
of
the
turntable
following
the
movement
of
the
tonearm
as
shonw
in
Fig.
3.
3.
The
engagement
is
very
easy
to
move
as
it
simply
rests
on
the
lower
trip.
On
the
music
section
of
the
record
groove
the
engagement
moves
so
slightly
that
it
is
returned
by
the
tip
of
the
projection.
Consequently,
the
turntable
spindle
gear
does
not
engage
with
the
main
gear
and
thus
does
not
trigger
the
auto-return
operation.
4,
When
playing
ends
and
the
pick-up
cartridge
enters
the
lead-out
groove
which
is
spaced
out,
the
engagement
advances
more
than
it is
returned
by
the
projection.
Because
of
this,
the
engagement
is
pressed
by
the
projection
as
shown
in
Fig.
4,
causing
the
main
gear
to
turn
and
engage
with
the
turntable
spindle
gear.
Thus
the
change
cycle
is
started.
5.
During
the
return
operation
the
engagement
and
lower
trip
which
have.
moved
are
returned
to
their
original
position
by
the
reject
lever
coming
into
contact
with
the
bottom
of
the
lower
trip.
At
this
moment
the
switch
lever
operates
with
the
help
of
the
main
gear
cam,
Fig.
1
switching
off
the
power
just
before
the
rotation
should
stop.
This completes the automatic cycle.
Projection
Engagement
Turntable spindle gear
Turntable
gear
i
Fig.
2
Fig.
4
Tonearm
lift
and
return
mechanism:
1.
When
the
main
gear
starts
to
rotate
at
the
end
of
playing,
the
return
lever
rotates
under
the
action
of
the
main
gear
cam
to
press
the
elevator
cam.
The
upward
movement
of
the
elevator
cam
is
directly
converted
into
movement
of
the.
elevator,
lifting
up
the
tonearm.
(Fig.
5
2.
.
tonearm
is
returned
by
the
arm
lever
the
end
of
which
presses
it
as
the
main
gear
rotates.
(Fig.
6)
Return Lever
Elevator Cam
Fig. 5
JL-A15
No. 2374

Adjustments
* Tracking force:
1.
Lower
the
elevator
and
remove
the
tonearm
from
the
arm
rest.
The
anti-skating
dial
should
be
adjusted
to
"0",
2.
Turning
the
main
weight,
balance
the
tonearm
with
the
stylus
tip
at
the
level
of
the
record
surface.
3.
Holding
the
main
weight
so
it
does
not
move,
turn
the
tracking
force
dial
to
bring
its
‘0’
to
the
index
line
on
the
weight
shaft.
4.
Turn
the
main
weight
clockwise
(so
that
it
moves
forward)
to
adjust
the
tracking
force.
(Fig.
7)
Optimum Tracking Force
1.5~2.0grams
Fig. 7
* Anti-skating
Anti-skating adjustment is done depending on the tracking
force. The figures on the dial indicate tracking forces. Set
it to the same value to which the tracking force is adjusted.
(Fig. 8)
JL-A15
Anti-Skating
Adjustment Knob
Fig. 8
* Stylus height:
The optimum position is with the stylus 6 - 10mm from the
record surface when a single record is placed on the
turntable and the arm elevator is lifted. Turning the
adjustment screw clockwise lowers the stylus and turning it
counterclockwise raises the stylus. (Fig. 9)
Fig. 9
* Auto-return (lead-out) timing:
When the pulley has been replaced for a different record or
if it takes place early, adjust as shown in Fig. 10.
- When change cycle starts too late, turn the screw
counterclockwise with a screwdriver.
- When change cycle starts too early, turn the screw
clockwise.
SING S23 7A e co ees eS rn ee a tere ee ke ea eet AN Se ak ee
oN

*
Pulley
height:
When
the
pulley
has
been
replaced
for
a
different
frequency,
adjust
the
height
of
the
pulley
so
that
the
belt
is
located
in
the
middle
of
each
section.
If
this
is
not
done
its
correct
speeds
cannot
be
obtained
and
the
speed
change
will
not
be
smooth.
lf
the
belt
is
in
contact
with
the
shift
lever,
the
height
of
the
pulley
is
mot
correct.
Loosen
the
set
screw
and
adjust
the
pulley
vertically.
(Fig.
11)
Shift lever
Beit
Cartridge
Mounting
The
four
cartridge
lead
wires
and
colour-coded
as
illustrated
in
Fig.
12.
Connect
the
lead
wire
sockets
to
the
appropriate
pins
of
the
cartridge,
then
fix
the
cartridge
to
the
head
shell
with
the
two
fixing
screws.
Keep
the
fixing
screws
untightened
so
that
you
can
undertake
the
eventual
overhang
procedures
easily.
Blue
(to
“LE”
or
“L-”’
on
the
cartridge)
Green
(to
‘“RE”
or
R-”)
Red
(to
“R+"
or
“R")
‘White
(to
““L+"
or
“L”)
NOTE:
To
play
discrete
4-channel
records,
simply
replace
“the
JVC
cartridge
Model
MD10252
and
stylus
Model
4DT-Z15S.
Oy
aa shell
at
Cartridge body
Stylus
Lubrication
Use
quality
mineral
oi!
such
as
sewing
machine
oil
on
the
motor
shaft
and
turntable
spindle.
*
Motor
shaft
5 -6 drops once a month for heavy use
1
-2
drops
every
three
months
for
normal
home
use.
Pulley
Lubrication
JL-A15
a NO:-2374

Exploded View of Parts 1
JL-A15
De a ie

List
of
Parts
for
Replacement
1
E10095-002
SHSP3010RS
E60990-001
E10098-006
n 007
E60989-001
SBSB3008M
. E47330-233J
» -234U
« -235P
n -236E
» -237A
» -238BS
E49273-004
E10101-001
” -002
E61114-001
SBSB3008Z
LPSP4040MS
Dust Cover
Screw
Lock Plate
Cabinet
”
Hing Ass’y
T. Screw
Rating Label J
U
Pp
E
A
B
M
Bottom Board U,P,E,A,8
” J,M
Foot Ass’y
Tapping Screw
Ass’'y Screw
PARTS NO. PARTS NAME REMARKS
op AR mo MP som MP mee ONY — AHN A a=
JL-A15
_... No, 2374.

Eeploded View of Parts 2
Fig. 15
JL-A15
No..2374..

PARTS NO. PARTS NAME
E2 1910-002
E2 1910-003
E2 1908-001
G30005
MP163SB
ARM510
E22048-001
E60982-001
E33901-004
SBSB3008Z
E49627-001
£49626-001
REE2000X
&21656-001
REE5000
£49623-002
E49651-001
E49629-001
E48820-001
E60341-001
£60336-001
E49717-001
E60986-001
E49595-003
£49596-001
REE3000X
£34503-001
E49604-001
E49605-001
£60912-001
£49603-001
£60981-001
E49608-002
£34504-001
E60791-001
LPSP4006NS
E34240-001
SBSB3008Z
E33896-002
£60987-001
E61145-001
QML1310-041
QML1310-051
G30062-005
SBSB3008N
LPSP4006NS
E34507-001, 001BS
E34507-002
£10100-002
E10100-003
£61095 001
QSM1V01-018
QSM1V01-022, 022BS
LPSP3014ZS
SPKP3015S
E60985-001
£49679-001
G41505-1
E49873-002
E£49613-004
E49657-001
RDS3000F
E60796-001
£49607-001
$BSB3012Z2
E60352-001
E33900-001
E60790-001
E61094-001
E34530-001
TSC-60B
TSC-60C
Turntable Covering
Turntable
Belt
Pick-up Ass’y
Tonearm Ass’y
P.U. Base Ass’y
Rest Ass’y
Spindle Ass’y
Tapping Screw
Engagement Pawl
Lower Trip Pawl
E Ring
Main Gear Sub Ass’y
E Ring
Reject Lever
Spring.
Adaptor Holder
EP Adaptor
Knob Ass’y
Motor Holder
Rod
Elevator Cam
Spring
E Ring
Knob Base
Leading Lever
Spring
Speed Nut
1.F.C. Lever
Cam Shaft
Spring
Knob Shaft
Spring
Ass’y Screw
Cueing Ass’y
Tapping Screw
Arm Lever Ass’y
Shield Cover
Lug Strip Ass’y
Signal Wire Ass‘’y
Tapping Screw
Ass’‘y Screw
Cord Stopper
Motor ‘Board Ass’y
Rod
Micro Switch
Ass'y Screw
P. Screw
Rod
Rod Holder
Steel Ball
Ball Holder
Return Lever Ass’y
Switch Lever
C.S. Ring
Spring
Bushing
Tapping Screw
Shifter
Shifter Holder
Rubber Tube
Shift Lever
C.B. Holder
Circuit Board Ass’y
a”
List of Parts for Replacement 2
nae Toa
abate E,A~001, B>001BS
J,M,U,P,E,A
B
,U,P,A
22, B+022BS
U,P,A
to include Capa’ QFM72EM-473)
3 QFH53AM-473)
— Sa A
*
OA) ed ed en es ek na os es A A
*
a et
* * *
*
*
*
SB Se es a Sh SW) SB BSB PB BSS QQ
*
*
— a a =—|W-
* * kK * * * NSESF
*
—_
*
*
JL-A15
_..No. 2374

TSC-GOE
TSC-60F
TSC-61ABS
OMP1 200-244
E03329-001
OMP3910-244
E03551-002
OMP9017-007BS
£49631-003
E60962-001
E60962-002
E61096-001
LPSP 30062
M712B or BBS
M712C
E49633-001
E60964-001BS
—61157-001
OSE2235-203BS
LPSP40082ZS
Accessories
E30580-517A, ABS
E22128-001
n 002
n -003
» -~Q04BS
BT-20022B
BT-20025
BT-20014
BT-20029
BT-20013B
BT-20023
BT-20024
E48820-001
E60962-001 or 002
E64209-003 or 004
£45557-002
£64207-001
JL-A15
NO DBT
PARTS NO. ’ PARTS NAME
Circuit Board Ass'y
"
"
Power Cord
Rubber Bushing
Pulley Ass’y (50Hz)
” (60Hz)
Mounting Plate
Ass’y Screw
Motor Ass’‘y
Motor Holder
Insulator Sheet
Bracket
Seesaw Switch
Ass’'y Screw
=
Inst. Book
C. Sheet
,M,U,P,E,A>A, B> ABS
=
_M
ye
A
,
Service Pro.
Do It Better
E.P. Adaptor
Pulley
Envelope
Screw Driver
Envelope
P (001 50Hz, 002 60Hz)
P (003 50Hz, 004 60Hz) ©
P
ccc
.
sears To]
to include Capa. QFZ9007-473)
” SEAeaAb aga)
” QFZ9007-473BS)
*
* OK
* *
*
I NOON ee
—- ee es ee
* * K *
ee ee ee re ee a ey

Exploded
View
of
Pick-up
Fig. 16
PARTS
NO.
PARTS
NAME
E22081-001 Pipe Arm Ass’y
E34534-001 Main Weight Ass‘y
E21933-004
Cartridge-Head
Shell
Ass’y
EG83496 Spacer
MD1025Z
Cartridge
Ass’y
Optional
B,
J
and
M
DT-Z1S
Stylue
Ass’y
”
E60562-001
Screw
EG82971 Washer
E60503-001 Nut
E34265-006
Head
Shell
Body
Optional B, J and M
E34268-001 Stylus Cover
JL-A15
Sa =r T E=EEEEEEIEEEEEEEEEEEnEee _—-No..2374

Exploded
View
of
Motor
ALAIS
No. 2374
Fig. 17
PARTS NO.
M712B or BBS
M7 12C
£33905-004
E49631-003
E60962-001
E60962-002
LPSP3006ZS
SBSB3008N
52396
Motor Ass’y
Mounting Plate
Rubber Bushing
Pulley Ass’y
Ass’y Screw
Tap Screw
Terminal Lug
101
Boe
a”.

Model JL-A15 Schematic Diagram
MM CARTRIDGE PICK-UP ARM
Pee ON ae ee ee ese ee A
L CH
R CH
MOTOR BOARD EARTH
-
Bc 2 1
ew wm mowed '
| : —¢ AC120V
t
\
Ciot 0.047 pF 60Hz
AC110~120V,
220~240V
50/60Hz
*” SLIDE SW.
110~120V ~—= 220~240V
“3
‘ q
Gio ecw eee Si) Tb an (E)
— 2 r 4 BLKIL) AC220V
1 BLUIN) 50Hz
to = oe od ’ 4
—— 3
' { (A)
Cot 0.047 1 BRNIL)
, AC240V
Se ee i BOHZ
UIN)
4 GRN/YEW
(E)
MOTOR BOARD EARTH
UJ 3
3 \ a es
aaa ed ee weds + | BRN(L)
~~ AC240V
. a
ime: 0a Tee ros eem! [econ OO
7a Cros
oo WHT OT g1 ee 4 0.067HF
“
Lad
$2:
MICRO
SW.
$1:
SEESAW
SW.
Fig. 18

Final
Packing
Ass‘y
Fig. 19
PARTS NO.
JL-A15-PK Catron Box
JL-A15-NZ Packing Materials
SPSP4045AS Screw
G6771-1 Caution Tag
Q03091-113 Washer
SPSP6050AS Screw
E33939-001 Platter Protector
0Q04141-1-J Wire Clamp
004141-2-J
i
JL-A15
PARTS NAME
50Hz
60Hz
NOT DBT enn a ce a nnn fn
To include pad
For Pick-up Main Weight

|
Specifications
MOTOR AND TURNTABLE
Drive System:
Drive Motor:
Speeds:
Wow and Flutter:
Signal
to
Noise
Ratio:
Platter:
TONEARM
Type:
Effective Arm Length:
Overhang:
Applicable Tracking
Force Range:
CARTRIDGE
Type:
Stylus:
Belt drive system
4 poles synchronous motor
33-1/3 and 45 rpm
Less than 0.06% (WRMS)
Better than 53dB (!1EC-B)
63dB (DIN-B)
12-inch(30cm) diameter die-cast
aluminum alloy
Statically-balanced S-shaped tubular
arm with JVC-developed TH balanc-
ing system and with tracking force
dial of 0.1 gram steps
220mm
15mm
0 to 3 grams
Moving magnet (MD-1025)
0.5mil, diamond
Model DT-Z1S for stereo and
Model 4DT-Z1S for discrete 4-channel
Optimum Tracking
Force:
. Output:
Frequency Responce:
Separation:
Load Resistance:
Compliance:
FEATURES
1.5 to 2.0 grams (DT-Z1S)
1.5 to 2.0 grams (4DT-Z1S)
3mV (1kHz)
10 to 25,000Hz
Better than 25dB (1kHz)
47 to 100kohms
25 x-10°6 em/dyne
Tonearm lifter, Auto-return mechanism, Removable dust
cover, Anti-skating device, etc.
GENERAL
Power Source:
Power Consumption:
Dimensions:
Weight:
(J), (M) 120V, 6OHz
{U), {P) 110~ 120V,220~240V,
50/60Hz
{E) 220V, 50Hz
(A) 240V, 50Hz
(B) 240V, 50Hz
13 watts (50/60Hz)
46(W) x 36(D) x 13(H) cm
(18-1/8 x 14-3/16 x 5-1/8 inch)
6.0kg (13.2 Ibs)
JL-A15
a. No. 2374.