Pioneer pdm 750 service manual

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(1,9 PIONEER

The Art of Entertainment

ORDER NO.
ARP2204

MULTI-PLAY COMPACT DISC PLAYER

pD'M51
PD-M750

PD-M51 AND PD-M750 HAVE THE FOLLOWING:

Model
Type Power Requirement Remarks
PDoMSl PD-M750

KU O - ACI 20V on iy

KC - 0 A01 20V oniy
HEM - O ACZZDV-ZSOV, 230V-240V (switchable) "

SD 0 AC1 ION . 120V-12TV, 220V, 240V

_ (switchable)

* Change the connection of the power Iransfomuers primary wiring.

O This manual is applicable to the PD-M51/KU, PD-M750/KC, HEM and SD types.
O As to the PD-M750/KC, HEM and SD types, refer to page 83-84. "
0 Ce manueI pour le service comprend Ies explications de réglage en frangais.

'0 Este manual de servicio trata del método ajuste escrito en espafiol.

CONTENTS .

1. SAFETY INFORMATION ..... 2 6 REGLAGES .................................................... 54

2. EXPLODED VIEWS, PACKING AND 6. AJUSTES -------------
PARTS LIST ----------------- 4 7. IC INFORMATION u

3. SCHEMATIC DIAGRAM-m 8 FOR PD-M750/KC HEM AND SD TYPES ' 83

4. P.C. BOARDS CONNECTION DIAGRAM 9 PANEL FACILITIES-

5. P.C.Bs PARTS LIST ------------------------------ -- 10. SPECIFICATIONS

6. ADJUSTMENTS .............................................. 40

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

PIONEER ELECTRONICS SERVICE INC. PO. BOX 1760, Long Beach, California 90801 USA.

PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drive Markham Ontario L38 8E3 Canada

PIONEER ELECTRONIC [EUROPE] N. V Keeiberglaan 1, 9120 Beveren Belgium

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, BraeSIde, Victoria 3195 Ausiralia TEL. [03] 580- 9911

© PIONEER ELECTRONIC CORPORATION 1991 so MAY ,99, Prime!

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This service manual is intended for qualified service technicians; it is not
meant for the casual do-it-yourselfer. Qualified technicians have the neces-
sary 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
a known reproductive toxicant which may cause birth defects or other reproductive harm

(California Health & Safety Code, Section 25249.5).

When servicing or handling circuit boards and other components which contain lead in
solder, avoid unprotected skin contact with the solder. Also, when soldering do not inhale

any smoke or fumes produced.

1. SAFETY INFORMATION

r(FOR USA MODEL ONLY)

1.SAFETY PRECAUTIONS

The following check should be performed for the
continued protection of the customer and service
technicians
LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground
(water pipe, conduit, etc.l by connecting a leakage
current tester such as Simpson Model 2292 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.l. 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 0.5mAt

Reading should

Leakage not be above

Device current 0-5mA
under tester
test
Test all
exposed metal
surfaces
2-wire cord
@ Also test with '
plug reversed , Earth
(Using AC adapter ground

plug as required)

AC Leakage Test

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, etct 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, PlONEER Service Manual may be
obtained at a nominal charge from PlONEER,