Pioneer ct 676 service manual

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The Art of Entertainment

III

ORDER NO.
ARP2227

STEREO CASSETTE DECK

CT -57
32232-5

CT-S709, CT-676 AND CT-676-S HAVE THE FOLLOWING:

Model
Type Power Requirement Remarks
(IT-$709 (IT-676 CT-676-S

KU/CA O - - ACI 20V only

H EM - - ACZ2OV-230V. 230V-240V (switchable)

HB -- ACZZOV-ZSOV. 230V-240V (switchable) '

AC1 10V. IZOV-I 27V. 220V. 240V
(switchable)

HEWM - - O A6220V-230V (switchable) "

000
I

SO -

* Change the primanj wiring oi the power transiormer.

O This manual Is applicable to the CT-S709/KU/CA, CT-676/HEM, HB, SD and
CT-676-S/HEWM types.

0 As to the CT-676/HEM, HB, SD and CT-676-S/HEWM types, refer to page 43-44.

0 Ce manual pour le servlce comprend les explications de réglage en frangals.

Q Este manual de servicio trata del método ajuste escrlto en espafiol.

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

PIONEEFI ELECTRONICS SERVICE INC. PO. Box 1760, Long Beach, California 90801 U SA.

PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drive. Markham, Ontario L3H 8E3 Canada

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

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178484 Boundary Road, Braeslde, Violona 3195 Australia TEL: [03] 580-9911

© PIONEER ELECTRONIC CORPORATION 1991 s, m 1991 Prim in mm

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CONTENTS
1.

SAFETY INFORMATION 7. ADJUSTMENTS .............................................. 26
2. DISASSEMBLY ------------ 7_ REGLAGES ............................................. 31
3. EXPLODED VIEWS. PACKING AND 7. AJUSTES ...... . ........................ ........... 35
PARTS LIST---~-~~-~~-~ 8. FOR CT-676/HEM. HB, SD AND
4. P.c. BOARDS CONNECTION DIAGRAM CT-676-S/HEWM TYPES ........................ ..... 43
5. SCHEMATIC DIAGRAM ------------------- 9, SPECIFICATIONS
6. P.C.B's PARTS LIST ----------------------- 10. PANEL FACILITIES»

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 8t 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

(FOR USA-MODEL ONLYI
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

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

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.I. 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
Leakage not be above
current 0-5MA

Device
under
test

Test all
exposed metal
surfaces

2-Wire cord

0 Also test with
plug reversed Earth
(Using Ac adapter ground
plug as required)

AC Leakage Test

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 Manuals A subscription to, or ad-
ditional copies of, PIONEER Service Manual may be
obtained at a nominal charge from PIONEER.