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Pioneer PL-X420 User Manual

Pioneer PL-X420
40 pages
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Service
CIRCUIT
DESCRIPTIONS
oe
REPAIR
&
ADJUSTMENTS
ORDER
NO.
ARP1209-A
STEREO
TURNTABLE
L-X420(BK)
MODEL
PL-X420
(BK)
COMES
IN
TWO
VERSIONS
DISTINGUISHED
AS
FOLLOWS:
Power
requirement
Destination
AC
220V—240V
European
continent
r
we
|
aea2ov—2a0v
Unied
Kraeom
@
This
service
manual
is
applicable
to
the
WEM
and
WB
types.
@
As
to
the
WB
type,
please
refer
to
pages
60.
@
Ce
manuel
d’instruction
se
refére
au
mode
de
réglage
en
francais.
@
Este
manual
de
servicio
trata
del
método
ajuste
escrito
en
espafiol.
CONTENTS
1.
SPECIFICATIONS
................2-0008-
2
9.
ELECTRICAL
PARTS
LIST..............4.
19
2.
PANEL
FACILITIES.................--008-
3
10.
TROUBLESHOOTING.
............20
00005
22
3.
DISASSEMBLY
.........
2.0.0
e
eee
eee
4
11,
ADJUSTMENT...
0...
ee
30
4.
PARTS
LOCATIONS................-.005-
7
lhe
BEGUIAGE,
giadeaxs
tyeis
dis
couhen
races
33
5.
EXPLODED
VIEWS
AND
PARTS
LIST
..........
9
Te
AJUSTE
«2a
cante
aeseiwcis
eg
yd
ant
atiel
g
atta
36
6G;
PAGRING
oi
Sia
ene
we
a
re
Rees
12
12.
BLOCKDIAGRAM
.............
00.000
e
eee
39
7.
P.C.
BOARDS
CONNECTION
DIAGRAM.......
13
13.
CIRCUIT
DESCRIPTION.
.................
41
8.
SCHEMATIC
DIAGRAM
...................
7
14:
FOR
WB
TYPE
ise
ciw Gib
aa
ace
ete
wane
ws
artes
56
PIONEER
ELECTRONIC
CORPORATION
4-1,
Meguro
1-Chome,
Meguro-ku,
Tokyo
153,
Japan
PIONEER
ELECTRONICS
SERVICE
INC.
P.O.
Box
1760,
Long
Beach,
California
90801
U.S.A.
TEL:
(213)
420-5700
PIONEER
ELECTRONIC
(EUROPE)
N.V.
Keetbergiaan
1,
2740
Beveren,
Belgium
TEL:
03/775-28-08
PIONEER
ELECTRONICS
AUSTRALIA
PTY.
LTD.
178-184
Boundary
Road,
Braeside,
Victoria
3195,
Australia
TEL:
(03)
580-8911
FK
©
JULY.
1986
Printed
in
Japan
i
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Pioneer PL-X420 Specifications

General IconGeneral
BrandPioneer
ModelPL-X420
CategoryTurntable
LanguageEnglish

Summary

SPECIFICATIONS

PHONOGRAPH MOTOR AND PLATTER

Details about the motor type, drive system, speed, wow, flutter, S/N ratio, and platter dimensions.

TONE ARM & CARTRIDGE

Information on the tone arm type and specifications of the supplied cartridge (PC-295T).

FUNCTIONS PROVIDED

Lists operational features like auto lead-in, auto return, auto cut, and repeat function.

POWER SUPPLY AND DIMENSIONS

Specifications for power requirements across different regions and external dimensions.

PANEL FACILITIES

DISASSEMBLY

3.1 DISASSEMBLY

Step-by-step instructions for initial removal of main unit components.

3.2 CARRIAGE REMOVAL

Procedure for detaching the carriage and tonearm assembly.

REPLACING THE CARRIAGE WIRE

Guide for fitting and securing the carriage wire.

LEAD LINE DISPOSAL

Instructions for routing and managing the lead lines to the carriage.

PARTS LOCATIONS

Front View

Identifies components and parts visible from the front of the unit.

Rear View

Identifies components and parts visible from the rear of the unit.

EXPLODED VIEWS AND PARTS LIST

PACKING

P.C. BOARDS CONNECTION DIAGRAM

CONTROL BOARD ASSEMBLY

Diagram showing connections for the main control board (PWZ 1022).

SWITCH BOARD (B) ASSEMBLY

Diagram illustrating connections for Switch Board (B).

SWITCH BOARD (C) ASSEMBLY

Diagram illustrating connections for Switch Board (C).

SCHEMATIC DIAGRAM

ELECTRICAL PARTS LIST

MISCELLANEOUS PARTS

Lists general parts not specific to a particular assembly.

Mechanism Base Board Assembly Parts

Lists components for the mechanism base board (PWX1002).

IC and Switch Board Parts

Lists components for various IC and Switch Boards.

Carriage Board Assembly Parts

Lists components for the carriage board assembly (PWX-101).

TROUBLESHOOTING

ADJUSTMENTS

11.1 STYLUS LOWERING POSITION ADJUSTMENT

Procedure to set the correct vertical tracking force and stylus drop point.

11.2 TRACKING SENSOR AND OFFSET ADJUSTMENT

Steps for calibrating tracking sensor gain and centering offset.

11.3 STYLUS HEIGHT ADJUSTMENT

Instructions for setting the optimal height of the stylus above the record.

11.4 PHONO MOTOR SPEED ADJUSTMENT

Method for adjusting turntable rotational speeds (33/45 RPM).

BLOCKDIAGRAM

CIRCUIT DESCRIPTION

Address and Tracking Sensor Circuits

Explains the function of sensors that detect tonearm position and tracking errors.

Elevation and Tonearm Circuit

Describes circuits controlling tonearm movement and solenoid operation.

Key Matrix Circuit

Details how button inputs are read and processed by the control IC.

Description of Operation Modes

Explains the various states and functions of the turntable during operation.

FOR WB TYPE

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