Pioneer cld 79 service manual

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(U) mom-zen

The Art of Enterminment

Service
Manual

ORDER NO.
R RV1 294
CD CDV LD PLAYER
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model .
Type CLO-99 OLD-79 Power Requiremenl Remarks
KU/CA O O ACIZOV
CONTENTS
LSAFEI'YINFORMATIONM"""'"""""""';2 6 ADJUSTMENTS ...................................... 56
2. EXPLODED VIEWS. PACKING 7. IC INFORMATION" -67
AND PARTS LIST ......................................... 3 8. CIRCUIT DESCRIPTION .. ................... 76
3. SCHEMATIC AND 9. BLOCK DIAGRAMS ---------------------- 8O
PCB CONNECTION DIAGRAMS ------------------ 15 10 PANEL FACILITIES-

4. PCB PARTS LIST ......................
5. SELF-DIAGNOSTIC FUNCTIONS -

PIONEER ELECTRONIC CORPORATION 4-1. Meguro I-Chome. Meguro-ku. Tokyo 153. Japan
PIONEER ELECTRONICS SERVICE, INC. RD. BOX 1730. Long Beach. CA 90301-1760. USA.

PIONEER ELECTRONIC (EUROPE) N. V. Haven 1087 Keetberglaan 1,9120 MelseIe. Belgium

PIONEER ELECTRONICS ASIACENTHE PTE. Lm 501 Orchard Road #10-00 Lane Ctaonfd Place, Singapore 0923
© PIONEER ELECTRONIC CORPORATION 1995

T- IFM MAY 1995 Pvinted in Japan

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1. SAFETY INFORMATION

This service manual is Intended for qualified service technicians; It is not meant for the casual
do-it-yourseifer. 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 I: listed by the California Health and Welfare agency as a known reproductive toxicant which
may cause birth defects or other reproductive harm (California Health 8: 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.

NOTICE
(FOR CANADIAN MODEL ONLY)

Fuse symbols a (fast operating fuse) and/or 13- (slow operating fuse) on PCB indicate that replacement pans

must be of identical designation.

REMARQUE
(POUR MODELE CANADIEN SEULEMENT)

Les symboles de fusible IE} (fusible de type rapids) eflou JEE- (fusibie de type lent) sur CCI indiquent que les

pieces de remplacement doivent avoir Ia meme designation.

'(FOR USA MODEL ONLY)
1.5AFETY 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 linput/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.

A- Reading should

0
Leakage not be above
current 0-5MA
tester

Device
under
test

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 P0-
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 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.