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Pioneer PD-X940M User Manual

Pioneer PD-X940M
56 pages
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WY)
PIONEER’
The
future
of
sound
and
vision.
Service
ORDER
NO.
ARP1534
MULTI-PLAY
COMPACT
DISC
PLAYER
D=-X940iIVI
MODEL
PD-X940M
HAS
TWO
VERSIONS:
Type
Power
requirement
Export
destination
HEM
AC220V,
240V
(Switchable)
*
European
continent
HB
AC220V,
240V
(Switchable)
*
4
United
Kingdom
|
*Change
the
connection
wire
from
Power
switch
board
assembly
to
Transformer
board
assembly.
e
This
manual
is
applicable
to
the
HEM
and
HB
types.
e
For
the
HB
type,
refer
to
page
67.
e
As
to
the
DISASSEMBLY,
please
refer
to
the
PD-M50,
PD-M40
and
PD-M40S
service
manual
(ARP1342).
e
As
to
mechanism
descriptions,
please
refer
to
the
PD-M50,
PD-M40
and
PD-M40-S
service
manual
(ARP1369).
e
Ce
manuel
pour
le
service
comprend
les
explications
en
frangais
de
réglage.
e
Este
manual
de
servicio
trata
del
método
de
ajuste
escrito
en
espajfiol.
CONTENTS
1.
SAFETY
INFORMATION
............-.-
2
7.
P.C.
BOARDS
CONNECTION
DIAGRAM
....
19
9.
“SPECIFICATIONS
2c.
s.a
onan
thd
etnee
et
4
8.
ELECTRICAL
PARTS
LIST..............
31
3.
PANEL
FACILITIES
...........0.-0000-
5
9.
ADJUSTMENTS
............0.00e
eee
ee
34
#<
PRCKING
Goce
toca
eS
Siege
Aste
8
REGLAGES:
0
bee
da
deeb
euatea
ied
45
5.
EXPLODED
VIEWS
AND
PARTS
LIST
.....
9
ASUSTE
ocd
665.8
Ve
main
eerats
acedied
56
6.
SCHEMATIC
DIAGRAM
...........--.--
15°.
A0JFOR
HB-TYPE
4)
oo5ta0206045.650n¢
505-74
67
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.
PIONEER
ELECTRONICS
OF
CANADA,
INC.
505
Cochrane
Drive,
Markham,
Ontario
L3R
8E3
Canada
PIONEER
ELECTRONIC
[EUROPE]
N.V.
Keetbergiaan
1,
2740
Beveren,
Belgium
PIONEER
ELECTRONICS
AUSTRALIA
PTY.
LTD.
178-184
Boundary
Road,
Braeside,
Victoria
3195,
Australia
TEL:
[03]
580-9911
MA
©
MAY
1988
Printed
in
Japan
Question and Answer IconNeed help?

Do you have a question about the Pioneer PD-X940M and is the answer not in the manual?

Pioneer PD-X940M Specifications

General IconGeneral
TypeCD Player
Frequency Response2Hz - 20kHz
Output Level2.0V
Disc formatCD
Digital outputsOptical
Channels2
Output Voltage2V

Summary

SAFETY INFORMATION

SAFETY PRECAUTIONS

General safety precautions and leakage current check procedure.

PRODUCT SAFETY NOTICE

Notice regarding special safety characteristics of electrical parts and replacement components.

LABEL CHECK

HEM Model Labels

Cautionary labels for the HEM model regarding laser radiation when the cover is open.

HB Model Labels

Cautionary labels for the HB model regarding laser radiation when the cover is open.

Additional Laser Safety Cautions

Important safety notes regarding laser diode operation and interlock mechanisms.

SPECIFICATIONS

General Specifications

Type, usable discs, signal format, and power requirements for the unit.

Audio Section Specifications

Frequency response, S/N ratio, dynamic range, and distortion details.

Output Terminals

Specifications for audio line output and headphone jack.

Player Functions

Description of search, programming, repeat, and random play features.

Display Features

Information on front panel display elements and indicators.

Included Accessories

List of accessories provided with the unit, like remote control.

PANEL FACILITIES

Front Panel Controls Overview

Identification and description of front panel controls and indicators.

Basic Operation Keys

Functions of power, eject, play, pause, stop, track search, and random play keys.

Programming and Selection Keys

How to use program memory, disc selection, and repeat keys.

PANEL FACILITIES

Rear Panel Connections

Description of rear panel connections including AC outlet and audio line terminals.

Rear AC Outlet Usage

Information on the rear AC outlet, its power limit, and usage precautions.

Power Cord Connection

Instructions for connecting the power cord to the unit or an external power source.

PACKING

Exterior Exploded View and Parts List

Exploded view and parts list for the exterior components of the unit.

MECHANISM SECTION

Exterior Parts List

List of parts for the exterior of the unit.

Mechanism Parts List

List of parts for the mechanism section of the unit.

SCHEMATIC DIAGRAM

Pick-up Assembly Schematic

Schematic diagram for the pick-up assembly.

Main Board Assembly Schematic

Schematic diagram for the main board assembly.

Servo Mechanism Assembly Schematic

Schematic diagram for the servo mechanism assembly.

Select Board Assembly Schematic

Schematic diagram for the select board assembly.

Switch Board Assembly Schematic

Schematic diagram for the switch board assembly.

Power Switch Board Assembly Schematic

Schematic diagram for the power switch board assembly.

Transformer Board Assembly Schematic

Schematic diagram for the transformer board assembly.

Function Board Assembly Schematic

Schematic diagram for the function board assembly.

DAC Board Assembly Schematic

Schematic diagram for the DAC board assembly.

Headphone Board Assembly Schematic

Schematic diagram for the headphone board assembly.

P.C. BOARDS CONNECTION DIAGRAM

Power Switch Board Connection

Connection diagram for the power switch board assembly.

Pick-up Assembly Connection

Connection diagram for the pick-up assembly.

Select Board Assembly Connection

Connection diagram for the select board assembly.

Transformer Board Connection

Connection diagram for the transformer board assembly.

Main Board Assembly Connection

Connection diagram for the main board assembly.

Servo Mechanism Assembly Connection

Connection diagram for the servo mechanism assembly.

Switch Board Assembly Connection

Connection diagram for the switch board assembly.

P.C. BOARDS CONNECTION DIAGRAM

Headphone Board Assembly Connection

Connection diagram for the headphone board assembly.

DAC Board Assembly Connection

Connection diagram for the DAC board assembly.

Function Board Assembly Connection

Connection diagram for the function board assembly.

WAVEFORMS

Play Mode Signal Analysis

Oscilloscope waveforms for various pins during PLAY MODE operation.

Search and Stop Mode Signals

Oscilloscope waveforms for pins during SEARCH and STOP operations.

Other Playback Waveform Checks

Oscilloscope waveforms for other play-related signal points.

WAVEFORMS

Specific IC Waveform Analysis

Oscilloscope waveforms for specific IC pins during various operations.

Power Status Waveform Monitoring

Oscilloscope waveforms showing power status during POWER ON and OFF.

ELECTRICAL PARTS LIST

Component Identification and Appearance

Visual representations of components and their external appearances.

Board Assemblies and Miscellaneous Parts

Lists of PCB assemblies, AC outlets, cords, and other miscellaneous parts.

Semiconductor and Passive Component Lists

Detailed lists of semiconductors, capacitors, and resistors with part numbers.

ELECTRICAL PARTS LIST

Switch and Other Component Listings

Lists of switches, resonators, and delay lines with part numbers.

Board-Specific Component Lists

Detailed lists of capacitors, semiconductors, and resistors for various board assemblies.

ELECTRICAL PARTS LIST

Function and DAC Board Parts

Lists of semiconductors, switches, capacitors, and resistors for Function and DAC Boards.

Switch and Select Board Parts

Lists of switches, semiconductors, capacitors, and resistors for Switch and Select Boards.

ADJUSTMENTS

Adjustment and Check Items Overview

List of adjustment and check items to be performed on the unit.

Test Mode Setup and Functions

Description of Test Mode setting, cancellation, and key functions.

Key Adjustment Points Identification

Identification of adjustment potentiometers (VRs) for various settings.

ADJUSTMENTS

Test Mode Operation Examples

Example sequences for operations within Test Mode.

Test Mode Key Function Details

Table detailing key functions and their operations during Test Mode.

ADJUSTMENTS

Tracking, Focus, and RF Offset Adjustment

Procedure to adjust tracking, focus, and RF offsets using potentiometers and oscilloscope.

RF Level and Laser Power Adjustments

Procedures for adjusting RF level and confirming laser diode output power.

Focus and Spindle Lock Confirmation

Procedure to confirm focus lock and spindle lock using a test disc and oscilloscope.

ADJUSTMENTS

Grating Adjustment Procedure

Procedure to adjust grating using the tangential adjustment screw and oscilloscope.

ADJUSTMENTS

Tracking Balance Adjustment Procedure

Procedure to adjust tracking balance by eliminating DC component from tracking error signal.

ADJUSTMENTS

Tangential Adjustment Procedure

Procedure to adjust tangential alignment for optimal eye pattern clarity.

ADJUSTMENTS

Focus Gain Adjustment Procedure

Procedure to adjust focus gain volume for a horizontal circle Lissajous figure.

ADJUSTMENTS

Tracking Gain Adjustment Procedure

Procedure to adjust tracking gain volume for a horizontal circle Lissajous figure.

ADJUSTMENTS

VCO Frequency and S Character Adjustments

Procedures for adjusting VCO frequency and confirming S character.

MSB Adjustment for Audio Output

Procedure to adjust MSB for Lch and Rch audio output waveforms to a sine wave.

FOR HB TYPE

HB Type Part Contrasts and Notes

Notes on miscellaneous parts and differences for the HB type compared to HEM type.

HB Type Schematic Diagram

Schematic diagram specifically for the HB type of the unit.

Line Voltage Selection

Voltage Change Procedure

Steps to change the line voltage selection for HEM and HB types.

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