Pioneer pdm 423 service manual

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Service
Manual f_ , _, -

RRV1062

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MULTI-PLAY COMPACT DISC PLAYER

PD-M423
PD-M403

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Model
Type Power Requirement Remarks
PD-M423 PD-M403

KUXJ O O Ac12ov
KCXJ O O ACIzov

CONTENTS
SAFETY INFORMATION ----------
PACKING AND PARTS LIST-
EXPLODED VIEWS AND PARTS LIST -
BLOCK DIAGRAM ~~~~~~~~~~~~~
SCHEMATIC DIAGRAM ......
PCB CONNECTION DIAGRAM
PCB PARTS LIST
ADJUSTMENTS
IC INFORMATION
FL INFORMATION

FOR PD-M423/KCXJ. PD-M403/KUXJ
AND KCXJw-
PANEL FACILITIES--
. SPECIFICATIONS ------

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PIONEER ELECTRONIC CORPORATION 4-1. Meguro 1-Chome. Meguro-ku, Tokyo 153. Japan

PIONEER ELECTRONICS SERVICE INC. 90, Box I760. Long Beach, California 90801 USA

PIONEER ELECTRONICS OF CANADA. INC. 300 Allstate Parkway Malkham, Ontario L3H 092 Canada

PIONEER WK: [EUROPE] N.V. HM" 1037 When I 920 Melsele. Belgium

PMEER ELECTRONICS WALK PTY. LTD 173-134 Boundary ROM. BWSIGe Vicloria 3195, AUSIIaIia TEL. [03] 580 9911

O PIONEER ELECTRONIC CORPORATION 1994 .
T-SSF FEB. 1994 Printed In Japan®

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PD-M423, PD-M403

1. SAFETY INFORMATION

This service manual is Intended for qualified service technicians; it Is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.

Improperly performed repairs can adversely affect the safety and reliability of the product and may void
the warranty. If you are not qualified to perform the repair of this product properly and safely, you should

not risk trying to do so and refer the repair to a qualified service technician.

WARNING

Lead in eolder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicent which
may cause birth defects or other reproductive hen-n (California Health at Safety Code. Sectlon 25245.5).

When servicing or handling circult boards end other component. which contain lead in colder, avoid unprotected skin contact with
the solder. Also. when soldering do not lnhele eny emoke or fumes produced.

NOTICE
(FOR CANADIAN MODEL ONLY)

Fuse symbols {EB (fast operating fuse) and/or a (slow operating fuse) on PCB indicate that replacement parts

must be of identical designation.

REMAROUE
(POUR MODELE CANADIEN SEULEMENT)

Les symboles de fusible -EE- (fusible de type rapids) et/ou a (fusible de type lent) sur CCI indiquent que les

pieces de remplacement doivent avoir la méme designation.

r-(FOR USA MODEL ONLY)
1.SAFETY PRECAUTIONS

The following check should be performed for the
continued protection of the customer and service
technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc), Plug
the AC line cord of the appliance directly into a 120V
AC 60Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5mA.

L- Fleading should

Leafiage not be above
0.5mA

Devrce
under
test

current
tester

Test all
exposed metal
surfaces

@ Also test with
plug reversed
(Using AC adapter
plug as required)

Earth
ground

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PC-
TENTIAL SHOCK HAZARD AND MUST BE COR-
RECTED BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.

2.PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appli-
ance have special safety related characteristics. These
are often not evident from visual inspection nor the
protection afforded by them necessarily can be ob-
tained by using replacement components rated for vo|~
tage, wattage, etc. Replacement parts which have
these special safety characteristics are identified in
this Service Manual.

Electrical components having such features are

identified by marking with a A on the schematics and
on the parts list in this Service Manual.
The use of a substitute replacement component which
dose not have the same safety characteristics as the
PIONEER recommended replacement one, shown in
the parts list in this Service Manual, may create shock,
fire. or other hazards.

Product Safety is continuously under review and
new instructions are issued from time to time. For
the latest information, always consult the current
PIONEER Service Manual. A subscription to. or ad-
ditional copies of, PIONEER Service Manual may be
obtained at a nominal charge from PIONEER.