Pioneer xrp 640 service manual

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(U) PIONEER /00.

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Service ..
Manual

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STEREO MULTI-PLAY CD CASSETTE DECK RECEIVER

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODELISI AND TYPEISI.

Model
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we XR-P740M XR-P74o XR-P640M XR-P64o XR-P340M XR-P340 "m Rm" "mm Y " ""W'W mm-

SD 0 O O O O O AC;;8¥$;§3\7127VI With the voltage selector
YPW O ' - O - O O Ac240v

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CONTENTS
CHAPTER 1 1.8 PARTS LIST FOR PACKING AND

1.1 SAFETY INFORMATION ------------------ 1 - 2 EXPLODED VIEWS ---------------------- 1 - 38

1_2 SPECIFICATIONS ......... 1_4 1_9 PCB PARTS LIST ........................... 1_47

1.3 PANEL FACILITIES -- -- 1-5

1.4 DISASSEMBLY ----- -- 1-8 CHAPTER 2

1.5 BLOCK DIAGRAM ---------------- . 1-9 2.1 PACKING AND EXPLODED VIEWS 2-2

1.6 IC INFORMATION --------------- 1- 11 2.2 SCHEMATIC AND PCB CONNECTION

1.7 ADJUSTMENTS ........................... 1_ 20 DIAGRAMS ................................. 2 _ 16

PIONEER ELECTRONIC CORPORATION 44, Meguro IEChome. Meguroiku. Tokyo 153. Japan

PIONEER ELECTRONICS SERVICE INC. PO Box 1760, Long Beach. CaIIIOrnIa 90801 U.S.A.

PIONEER ELECTRONICS OF CANADA. INC. 300 Allstate Parkway Markham, QntarIO LSR 0P2 Canada

PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgrum

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178484 Boundary Road, BraESIde, VICIOrIa 3195, AUSIIBIIB TEL [03] 580-9911

© PIONEER ELECTRONIC CORPORATION 1993 TEDFF 13501993 hinted in Japan

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XR-P74OM, XR-P64OM, XR-P34OM
XR-P740, XR-P640, XR-P34O

CHAPTER 1
1.1 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 solder used in this product is listed by the California Health and Welfare agency as e known reproductive toxicant which
may cause birth defects or other reproductive harm (California Health at Safety Code. Section 25249.5).

When servicing or handling circuit board: and other component: which contain lead in colder, avoid unprotected skin contact with
the solder. Also, when told-ring do not inhele any lmoke or fumes produced.

NOTICE
(FOR CANADIAN MODEL ONLY)

Fuse symbols {El} (fast operating fuse) and/or E3 (slow operating fuse) on PCB indicate that replacement pans

must be of identical designation.

REMAROUE
(POUR MODELE CANADIEN SEULEMENT)

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

pieces de remplacement dolvent avoir la meme designation.

'IFOR USA MODEL ONLY)

1.3AFETY 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 22972 or

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.

Reading should

Leakage not be above
Device current 0 SmA
under tester
test '
Test all
exposed metal
surfaces
O Also test wrth
plug reversed Earth
(Using AC adapter ground

plug as required]

AC Leakage Test

equivalent between the earth ground and all exposed

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO~
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 vol-
tage, wattage, etc. Replacement parts which have
these specral 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.