Pioneer PL-200Z User manual

ervice
CIRCUIT
DESCRIPTIONS
OX
REPAIR
&
ADJUSTMENTS
}
ORDER
NO.
ARP-459-0
STEREO TURNTABLE
PL-2002
PL-201Z
MODEL PL-200Z COMES IN TWO VERSIONS DISTINGUISHED AS FOLLOWS:
(DC power supply) Australia, European continent and West Germany models
(DC power supply) U.S. Military model :
Voltage Remarks
(DC power supply) U.S.A, Canada, United Kingdom and West Germany models
@ This service manual is applicable to the PL-200Z/ZEM type.
© Both model PL-200Z and PL-201Z have the same basic mechanism and performance. The only difference
is
in
appearance.
,
@ For servicing of the PL-200Z/Z/G and PL-201Z/ZUBM types, please see 20 page.
@ Ce manuel d ‘instruction se rerére au mode de réglage en frangais.
@ Cste manual de servicio trata del método de ajuste escrito en espajfiol.
PIONEER ELECTRONIC CORPORATION <--1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS [USA] INC. P.O. Box 1760, Long Beach, California 90801 U.S.A.
TEL: (B00) 421-1404, [213] 420-5914
PIONEER ELECTRONIC [EVUROPE]N.V. Keetberglaan 1, 2740 Beveren, Belgium TEL: 03/775:-28:08
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia
TEL: [phone] ,
FG© MAR. 1984 Printed in Japan

CONTENTS
. SPECIFICATIONS . 6... ... 00.0 e eee ee eee
. PANEL FACILITIES
. DISASSEMBLY ........ cece eee eee
. ELECTRICAL PARTS LIST ..............
. P.C. BOARDS CONNECTION DIAGRAM
. SCHEMATIC DIAGRAM ........... ee eee
. EXPLODED VIEWS ....... cece ee
“a OO O11 FP WD —
Drive SysteM . 0. ee ee es Belt-drive
Gpeedsisic ic. hae we Aa eh ee we whe Te 33-1/3 and 45 rpm
Wow and Flutter ..........0006 Less than 0.05% (WRMS)
+0.07% WTD Peak (DIN)
Signal-to-Noise Ratio ........-00% More than 68dB (DIN-B)
(with Pioneer cartridge model PC-250T)
Usable Cartridge .......-.. eee e eee eves T4P cartridge
PC-250T Specifications
GYD Cl inn bible ke Shae Bia. a to ae eee ee os Moving magnet type
SW a eka 6 See ae 0.6 mil diamond (PN-250T)
Output Voltage... ........ 2.5mV (1kHz, 5cm/s LAT. Peak)
Frequency Response... .... 00+ ee ee eens 10 to 30,000Hz
Recommended Load... . . . ee ee ee ee ee ee 47k2Q
Miscellaneous
Power Requirements... . 0... 0 eee ee ee eee eee DC12V
Dimensions ............- 420 (W) x 106 (H) x 375 (D)mm
16-1/2 (W) x 4-3/16 (H) x 14-3/4 (D) in
WR ight 255 eal ee ee gmat ae EN So ee lee 3.6kg/7 Ib 15 02
Accessories
EPAdap ter ta sane pce ee iedearne odie hae aa WO aE ane Sete ceeh te: wise 1
NOTE:
Specifications and design subject to possible modification without
notice, due to improvements.
EPACKING: s-potnaauiGy wenanecn deoueeue es 12
. PRECAUTIONS FOR REASSEMBLY ........ 13
ADIUSTMENTS® .4.3:2-0 esis ease aes 15
EC IREGLAGE siete nee ea ad 17
CUPIUGTE. ck hase ye eh ank pansies 18
. FOR PL-200Z/Z/G AND PL-201Z/ZUBM #
TV RES? stoay cee er eee ee 20

QUESTIONNAIRE MODEL
One Model per questionnaire
Dear Servicer,
Thank
you
for
your
cooperation
in
the
post-sale
service
of
Pioneer
products.
This
questionnaire
is
used
as
a
tool
to
improve
the
serviceability
of
our
products
and
service
manuals.
Please
evaluate
this
model
and
service
manual
by
answering
the
following
questions.
Your
ideas
may
be
realized
in
our
future
products.
Your
answers
will
be
appreciated.
Thank
you.
PIONEER ELECTRONIC CORP.
T. Nakagawa, Manager, Service Section, International Division
SERVICING
EVALUATION
Circle
applicable
number:
Good
Fair
Disassembly / Re-assembly : 1
Circuit Checks:
Replacement of Parts:
Adjustment (s):
* If (4) or (5) was circled, please be specific.

e. Your advice, opinion or ideas related to servicing this product.
2. SERVICE MANUAL EVALUATION
a. Circuit & Mechanism Description
b. Circuit Diagram
3. OTHER
Please describe other areas of servicing which you may find difficult.
Completed by : Date :
Company Name :
Address :
City/State/Zip :
Please send this form filled to the distributor in your country.

QUESTIONNAIRE
Modéle.
aS
ee
Un
modéle
par
questionnaire
Cher Monsieur,
Merci pour votre coopération a4 propos du service aprés-vente des produits PIONEER.
Ce questionnaire a pour but l’amélioration de notre service d’entretien et des manuels de nos produits.
Nous vous prions d’évaluer dans ce questionnaire les éléments de nos manuels de service. Vos conseils
seront précieux et pris en considération dans la réalisation de nos produits dans l’avenir.
En vous remerciant d’avance, agréez, cher monsieur, l’expression de nos sentiments distingués.
PIONEER ELECTRONIC CORPORATION
T. Nakagawa, Manager, Service Section, Administration Department, International Division
1. EVALUATION EN FACILITE DE SERVICE Cerclez le numéro.
MODELE Bon, Passable, Mauvais,
a. Démontage/remontage
b. Examen de circuits
c. Rechange de piéces
d. Facilité de réglage
* Si vous cerclez No. 4 ou 5, donnez l’explication concréte.

eo SSSSSSSSeSeSF
e. Votre conseil ou avis sur le service
ee
ee
2. VOTRE
APPRECIATION
DU
MANUEL
DE
SERVICE
a. Circuit et description du mécanisme.
b. Diagramme du circuit.
a
3. AUTRES
Anotez les autres points difficiles 4 réparer.
. OO
‘Répondu par : Date :
Nom: Age :
Compagnie :
Adresse :
[ —
Adressez-vous ce questionnaire au distributeur, S.V.P.

ENCUESTA Modelo
Uno modelo por encuesta
Querido sefior,
Muchas gracias por su cooperacion en el servicio de post-venta de los productos de Pioneer. Esto es para
mejorar el servicio de post-venta de nuestros productos. Les pedimos a ustedes responder a las preguntas
siguientes. Su opinion e idea estaran tenido en cuenta en los productos futuros.
Nos complacemos en saludarles muy atentamente,
PIONEER ELECTRONIC CORPORATION
T. Nakagawa, Manager, Service Section, Administration Department, International Division
1. EVALUACION EN LA FACILIDAD DE SERVICIO
MODELO . Marque uno entre los numeros siguientes.
Bueno Medio Malo
a. Desmonte:
b. Examen de circuito:
c. Reemplazo de piezas:
d. Ajuste:
* Si marca (4) 0 (5), ejemplifiquelo concretamente.

e. Su consejo, opinion u idea en el servicio de este modelo.
2. EVALUACION DEL MANUAL DE SERVICIO
a.
Circuito
&
Descripcion
de
mecanismos.
b. Diagrama del circuito.
OTRAS
Describe otras partes dificiles de reparar.
Respondido por : Fecha :
Nombre : Edad :
Compaiifa :
Direccion :
Manda esta enquesta al domicilio del distribuidor, por favor.

2. PANEL FACILITIES
@ SPEED SWITCH
Set this switch in accordance with the speed of the record which is
to be played.
[33] : For 33-1/3 rpm records.
[45] : For 45 rpm records.
@ ARM ELEVATION LEVER
© ARM REST AND CLAMPER
CARTRIDGE
STYLUS
EP ADAPTER
eo 6 6
DUST COVER
PL-200Z

od 1 od
3. DISASSEMBLY
Soldering iron
Dust cover
(Player hood)
PU terminal
board
Rubber mat
(rubber sheet)
Belt Motor
assembly
PU plate spring
PU plate assembly
Mechanism assembly
(Sub-panel)
Shield plate

@ Mechanism Ass’y and Motor
1. Turn on the turntable and free the mechanism.
2. Fasten the tone arm to the arm rest.
3. Remove the rubber sheet and turntable platter.
4. Close the player hood and turn the player up-
side down and place it on a soft cloth so that
the player hood is not damaged.
5. Remove the seven screws @ , and remove the
bottom plate.
6. Remove five screws @and one screw ©.
7. Disconnect the lead wires (©)
The mechanism ass’y can be removed from the
panel,
8. Using a soldering iron, disconnect the lead wires
from the motor.
Remove the two screws @, and remove the
motor.
See pages 13 ~ 15 for the parts installation and
assembly precautions.
4. ELECTRICAL PARTS LIST
NOTES:
@ Tone Arm
1. Remove the mechanism ass’y from the panel.
2. Using a soldering iron, disconnect the PU lead
wires (arm lead wires) from the PU terminal
board.
8. Remove the one screw @ , and remove the PU
plate ass’y from the tone arm.
4, Remove the R clip.
5. Turn the player onto its side, remove the arm
reset clamp, and remove the tone arm from
the panel.
e When ordering resistors, first convert resistance values into code form as shown in
the following examples.
Ex. 1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm
and 47k ohm (tolerance is shown by J=5%, and K=10%).
5602 56 xX 10} 561..... RD%PS BaM J
47RQ. 47 x 10° 473..... RD%PS (Ag J
0.52 ORD. eck eke Aes RN2H K
12 O10 a hileke ete die ya ales RS1P OH) K
Ex. 2 When there are 3 effective digits (such as in high precision metal film
resistors).
5.62k2 562 x 10! 5621 .... RN%SR BAAD F
e The {\ mark found on some component parts indicates the importance of the
safety factor of the part. Therefore, when replacing, be sure to use parts of
identical designation.
e For your Parts Stock Control, the fast moving items are indicated with the
marks ** and * .
**x GENERALLY MOVES FASTER THAN *
This classification shall be adjusted by each distributor because it depends on
model number, temperature, humidity, etc.
Miscellaneous Parts
Mark Symbol & Description Part No.
* Motor assembly PYY-163
Cartridge (without stylus) PXV-952
PU cord assembly PXB-382
$2 Capacitor CKDYF 103Z 50
xk C1 Push switch (SPEED) PSG-049
Awe SI Microswitch (POWER) PSF-023

1
PL-2002
2
5. P.C. BOARDS CONNECTION DIAGRAM
Sl
S12:
MICROSWITCH
(POWER)
PSF-023
|
PU P.C. BOARD
SWITCH
P.C. BOARD
300mA
MOTOR ASSEMBLY
PYY-163
VR1: SPEED ADJ. 45rpm__ |
VR2: SPEED ADJ. 33'/3rpm

=] 10 | @
1
2
3
6.
SCHEMATIC
DIAGRAM
s1 $1; MICROSWITCH
oo ( POWER )
bi
PSF-023
MOTOR
ASSEMBLY
A
WHT WHT PYY -163
| R41: SPEED ADJ. 45rpm ;
VR2: SPEED ADJ. 331/3rpm
WHT
C1
[11.3]
ous
Vec1
|
0.01/50 30mA =~
BLK
VR1 10k
—
acme
|
|
PU P.C.BOARD
SWITCH P.C.BOARD
$2: SPEED
PSG -049
yy
TI
SWITCHES:
0
oci1.3v
Si:
POWER
ON
~_OFF
‘
S2:
SPEED
33V3rpm—45rpm
7
lL.
oo
ae
ee
‘
a.
-
;
The
underlined
indicates
the
switch
position.
1. RESISTORS:
Indicated
in
@,
%W,
+5%
tolerance
unless
otherwise
noted
k
:
kQ,
M
:
MQ,
(F)
:
£1%,
(G)
:
#2%,
({K).:
£10%,
(M):
£20%
tolerance
2
CAPACITORS:
C
Indicated
in
capacity
(uF)/voltage
(V)
unless
otherwise
noted
p
:
pF
Indication
without
voltage
is
50V
except
electrolytic
capacitor.
3. VOLTAGE
S__]:
DC
voltage
(V)
at
no
input
signal
4. OTHERS:
aap : Signal route.
@ : Adjusting point.
The
A
mark
found
on
some
component
parts
indicates
the
im-
portance
of
the
safety
factor
of
the
part.
Therefore,
when
replacing,
be sure to use parts of identical designation.
3 marked capacitors and resistors have parts numbers.
This
is
the
basic
schematic
diagram,
but
the
actual
circuit
may
vary
due
to
improvements
in
design.
D

PL-2002
7. EXPLODED VIEWS
7.1. EXTERIOR
Parts List
NOTES:
e Parts without part number cannot be supplied.
e
The
f,
mark
found
on
some
component
parts
indicates
the
importance
of
the
safety
factor
of
the
part.
Therefore,
when
replacing,
be
sure
to
use
parts
of
identical
designation.
e
For
your
Parts
Stock
Control,
the
fast
moving
items
are
indicated
with
the
marks
**
and
*
.
*x* GENERALLY MOVES FASTER THAN *
This
classification
shall
be
adjusted
by
each
distributor
because
it
depends
on
model
number, temperature, humidity, etc.
Mark No. Part No. Description Mark No. Part No Description
1. PNV-034 Dust cover 26. PBH-238 Elevation cam spring
2. PXB-378 Hinge assembly 27. IPZ30P100FMC Screw 3x10
3. PEA-061 Rubber mat assembly 28. PBK-053 EV plate spring (A)
4. PNR-192 Turntable platter 29. PXT-462 EV plate spring (B) unit
* 5. PEB-224 Belt 30. PBF-020 Washer
6. PAD-147 SP button unit 31. PXB-375 PU plate (B) assembly
7. PNP-306 Switch P.C. board 32. YS40FBT Washer
kx 8. PSG-049 Push switch (S2) 33. PMD40P080F MC Screw 4x8
* 9. PYY-163 Motor assembly 34. WC40FMC Washer
10,00 te Searte g 35. PNC-227 PU spring washer
11. IPZ30P290FMC Screw 3x29 36. PBH-308 PU plate spring
12. PDZ30PO60FMC Screw 3x6 37. PEB-251 Insulator
13. PPZ30PO80FMC Screw 3x8 38. PBK-059 R clip
14. PBA-112 Screw 39. YE3OS Retaining ring (Type E)
15. PEB-172 Motor rubber 40. BPZ26P120FZK Screw 2.6x12
16. PNY-197 Panel 41. PBA-170 Screw
17. PXB-374 EV sheet assembly
18.
PXB-373
Arm
rest
assembly
101.
Sub-panel
assembly
19.
PPD-658
Tonearm
assembly
102.
Button
plate
20. PXV-952 Cartridge (without stylus) 103. Shield plate
21. PNX-972 Stylus cover
22. PXB-382 PU cord assembly
23. PBH-293 EV spring
24, PNX-344 EV cam lever
25. PNX-339
Elevation cam

10

1 2 3
7.2 SUB-PANEL ASSEMBLY
Parts List
o_o
Parts List
aoRWN =
12
11 1 | 2 3
Mark No.
CONN
Part No.
PXT-446
PYY-164
PBA-126
PBF-018
PNY-139
PBH-225
PNX-030
PNY-141
8. PACKING
Part No.
PEA-061
PRH-003
PBA-144
N93-603
PNX-294
PHA-175
PHA-176
PHH-120
Description
Detector lever unit
Cam assembly
Screw 2.6x8
Washer
Lock plate
Lock plate spring
Switch lever
Switch locker
Description
Rubber mat assembly
Information note
Sheet
Clamp screw
45 adaptor
Platter cushion
Protector ({L)
Protector (R)
Packing case
Turntable platter
Part No.
PSF-023
PXB-232
PXB-379
PDZ30PO80FMC
Description
Microswitch (S1)
Driving plate assembly
Shaft assembly
Screw 3x8
Subpanel unit
1
2—
LO cover
4

9. PRECAUTIONS FOR REASSEMBLY
Follow these directions and precautions when
reassembling a unit after completing repairs. Be
sure to lubricate as required, make no mistakes
when attaching parts, and avoid all other careless
mistakes that may be the cause of trouble later on.
9.1 AREAS THAT REQUIRE LUBRICATION
NOTE:
Types of lubricants and areas where they are used are
listed in table 1.
Table 1
Type of Oil Areas used
Silicon Oil #50000 raising shaft
GYA-008 all other areas
Lubrication points are specified for greases
other than GYA-008. Never use a different type
of greases.
e Cam Section
Apply
grease
to
the
heart-shaped
grooved
section
(rear
side
of
the
cam)
and
lock
plate
sliding
section
in
order
to
minimize
wear
on
the
sliding
section
and
the
burden
on
the
mechanism.
e Driving Plate Assembly
Decrease
the
burden
on
the
mechanism
and
the
wear on the sliding section.
Sides, top, and bottom surfaces
(Sliding section of auto-stop)
mechanism)
Sides surface >
(Sliding section of
auto-stop mechanism)
Top and side
(Sliding section of
auto-stop mechanism)
EV cam side surface
(Sliding section of elevation cam)
Fig.
9-1
Driving
panel
assembly
section
Switch
Locker
Section
© Switch Locker Section
Apply
grease
to
the
switch locker
(opening)
and
sub-panel
base
sliding
section
to
decrease
the
burden
on
the
mechanism.
When
applying
grease
to
the
opening
(shaft
hole),
do
not
apply
any
grease
2—3mm
from
the
bottom
surface.
If
grease
is
applied
2—3mm
within
the
bottom
surface,
it
may
come
out
the
bottom
and
go
between
the
switch
lever
and
sub-panel
base
causing
the
switch
lever
to
operate
ineffectively.
Switch locker
Fig. 9-2 Switch locker section
e@ EV Sheet Section
Apply
oil
to
the
raising
shaft
and
sliding
section
of
the
bearing
to
assure
stability
in
the
elevation
lowering
speed.
Apply all around
‘at a width of 1mm
Half of the grooved
section
EV sheet assembly
Fig. 9-3 EV sheet section
@ EV Cam Lever Section
Apply grease to the sliding section of EV plate
spring (A) and EV lever unit to decrease the
burden on the mechanism.
EV spring (A)
sliding section
EV cam lever
Qo
EV cam lever
sliding section
ee
Panel
Fig. 9-4 EV cam lever section
13

e Elevation Cam Section
_ Apply grease to the elevation cam and sliding
section of the raising shaft to decrease the burden
when operated.
Elevation cam
Fig. 9-5 Elevation cam section
9.2 PRECAUTIONS FOR ATTACHMENT
OF PARTS AND REASSEMBLY
e Cam Assembly Attachment
The cam assembly is attached by letting the
lock plate go in the direction @ as shown in Fig.
9-6.
Driving plate
Locker plate
Sub-panel base
Fig. 9-6 Cam assembly attachment
14
@ Arm Base Attachment
When
attaching
the
arm
base
section
to
the
mechanism
section,
put
the
mechanism
section
switch
locker
and
switch
lever
in
the
locked
posi-
tion
and
verify
that
the
tonearm
is
in
the
arm
rest
location.
Also
check
that
the
PU
plate
shaft
is
in
the
position
shown
in
Fig.
9-7.
PU plate shaft
Switch lever
Switch locker
Fig. 9-7 Arm base attachment
© PU Plate Assembly Attachment
The PU plate assembly is attached by pushing
the PU plate bearing section against the arm
rotating shaft fixing nut.
The attachment direction is matched to the
center of the support line as shown in Fig. 9-8
(tone arm position on the arm rest).
PU
plate
assembly
Sy
of
p=
Panel mark
7 (aligned center)
PU plate
Fig. 9-8 PU plate attachment

@ PU lead Wire Position Confirmation
When attaching the mechanism ass’y to the
panel, be careful that the PU lead wire is not
pinched at the panel boss as shown in Fig. 9-9.
Mechanism section
PU lead wire
PU P.C. board
Fig. 9-9 PU lead wire attachment
@ Installing The Cords
When installing the PU lead wire and DC power
cord, install them to the. panel with string as
shown in Fig. 9-10.
Fig. 9-10 Cords stringing
10. ADJUSTMENTS
10.1 AUTO-RETURN ADJUSTMENT
® Auto-Return Position Adjustment
When auto-return occurs too early or too late,
make the following adjustments.
1. Check the stylus landing position. If the stylus
does not land at the correct position, adjust the
landing position.
2. Set the arm elevation switch to UP and turn
the auto-return adjustment screw fully counter-
clockwise.
8.Move the tone arm as far as it will go
toward the inside.
4. When the auto-return adjustment screws is
turned slowly clockwise, the tone arm will
begin to move toward the inside.
5. Stop turning the adjustment.screw at the point
at which there is a space of 32mm between
the cartridge stylus and the center shaft. (Fig.
10-1)
6. After adjustment, check that auto-return is per-
formed correctly and that the stylus landing
position is correct.
Fig. 10-1 Auto-return adjustment
15
10.2 ARM-ELEVATION ADJUSTMENT
@ Arm Elevation Height Adjustment
1. Turn the arm elevation lever up to raise the
tone arm.
2. Adjust the screw so that stylus is 23 mm above
the panel. When the adjustment screw is turned
counterclockwise, the stylus lowers.
10.3 MOTOR ADJUSTMENTS
Place the record player on blocks as shown in
Fig. 10.3 and adjust the motor from the under base.
1.Turm the arm elevation lever up to raise the
arm.
2.Place a strobo sheet on the turmtable, move
the arm to the turntable side, and rotate the
turntable.
8. Adjust semifixed resistors VR1 and VR2 of
the motor ass’y so the strobo of the strobo
sheet appears to the static.
4. First adjust VR2 for 33 1/3 rpm and then ad-
just VR1 for 45 rpm.
od Oy — 4 ©] ©
Screw driver
Fig. 10-2 Arm-elevation adjustment
VR1 45rpm Motor
VR2
Screw driver
Fig. 10-3 Motor adjustment
16

10. REGLAGE
10.1 REGLAGE DE RETOUR AUTOMATIQUE
e Réglage de la position de retour automatique
Réaliser les réglages suivants lorsque le retour
automatique se produit t6t ou trop tard.
1. Contréler la position de descente de la pointe
de lecture. Si la pointe de lecture ne descend
pas sur la position correcte, ajuster la position
de descente.
2. Régler la touche de relevage du bras sur la
position “UP” et tourner la vis de réglage du
retour automatique a fond dans le sens con-
traire des aiguilles d’une montre.
8. Déplacer le bras de lecture le plus possible
vers l’intérieur.
4. Lorsque la vis de réglage du retour automatique
est tournée lentement dans le sens des aiguilles
d’une montre, le bras de lecture commence a
se déplacer vers ]’intérieur.
5. Arréter de tourner la vis de réglage sur le
point pour lequel il y a un écart de 32mm
entre la pointe de lecture et l’axe central.
(Fig. 10-1)
6. Aprés le réglage, vérifier que le retour auto-
matique se réalise correctement et que la
position de descente de la pointe est correcte.
jor
Réglage de retour automatique
Fig. 10-1
17
10.2 REGLAGE DE RELEVAGE DU BRAS
LECTURE
@ Réglage de la hauteur de relevage du bras de.
lecture
1. Tourner le levier de relevage du bras pour
soulever le bras de lecture.
2. Régler la vis de sorte que la pointe de lecture se
situe 4 23 mm au-dessus du panneau. Lorsqu’
on tourne la vis de réglage dans le sens con-
traire des aiguilles d’une montre, la pointe de
lecture se baissera.
10.3 REGLAGE DU MOTEUR
Placer le tourne-disques sur des blocs, comme il
est montré dans la Fig. 10-3 et régler le moteur
depuis le dessous.
1. Tourner le levier de relevage du bras pour
soulever le bras de lecture.
2.Placer une feuille stroboscopiques sur le
tourne-disques; déplacer le bras jusqu’au cdté
du tourne-disques et le faire tourner.
3. Régler les résistances demi-fixes VR1 et VR2
de l’ensemble du moteur, jusqu’a ce que la
feuille stoboscopique apparait immobile.
4. D’abord régler VR2 pour avoir la vitesse de
33 1/3 tr/min, ensuite, régler VR1 pour 45
tr/min.
VR2
18
33-1/3 tr/min
Tournevis
ig amma,
TAQ 5 a
Daa
Fig. 10-2 Réglage de relevage du bras de lecture
VR1
45 tr/min.
Moteur
Tournevis
Fig. 10-3 Réglage du moteru
10. AJUSTE
10.1 AJUSTE DE RETORNO AUTOMATICO
e Ajuste de la posicién de retorno automatico
Cuando el retorno automatico se produce
demasiado rapido o demasiado tarde; efectuar
los ajustes siguientes.
1. Comprobar la posicion de descenso de la aguja.
Si la aguja no desciende en la posicién correcta,
ajustar la posicion de descenso.
2. Ajustar el interruptor de elevacién del brazo
en la posicion UP y girar el tornillo de ajuste
de retorno automatico completamente hacia
la izquierda.
3. Desplazar el brazo fonocaptor hacia el interior
al maximo.
4. Cuando se giran lentamente los tornillos de
ajuste de retorno automatico hacia la derecha,
el brazo fonocaptor emplezaraé a moverse
hacia el interior.
5. Dejar de girar el tornillo de ajuste en el punto
en el que haya un espacio de 32mm entre la
aguja de la capsula y el eje central. (Fig. 10-1)
6. Después del ajuste, compronar que la operacion
de retorno automatico se efectie correcta-
mente y que la posicién de descenso de la
aguja sea la correcta.
Fig. 10-1 Ajuste de retorno automatico