Pioneer ct 656 mk2 service manual

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PIONEER

The future at sound and vision.

Sefirice
3111131

ORDER NO.
ARP1974

STEREO CASSETTE DECK

: CT-S707

CT-BEBMAFIKII
CT-BEBMARKII-S

MODEL CT-3707, CT~656MAFIKII and CT-BSGMARKII-S HAVE FOLLOWING VERSIONS:

Applicable model
, Type Power requirement Export destination
CT-S7D7 CT-GSSMAHKII CT-SSBMARKll-S
KU/CA 0 AC 120V oniy USA. and Canada
HEM 0 AC 220V, 240V (Switchable) * European continent
HEWM O AC 220V, 240V (switchable) 4' European continent
H3 0 AC 220V, 240V (switchable) 1 United Kingdom
SD 0 AC110V, 120-127V, 220V, Kingdom of Saudi Arabia and
240V (Switchable) General market

* Change the primary wiring of the power transformer.

0 This manual is applicable to the CT-SYO7/KU/CA, CT-656 MARK ll/HEM, HB, SD and CT-656 MARK
ll-S/HEWM types.

As to the CT-656 MARKll/HEM, HB, SD and CT-656 MARK ll-S/HEWM types, refer to pages 43.

Ce manual pour le service comprend les explications de réglage en frangais.

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

CONTENTS

1. SAFETY INFORMATION ................ 2 7. IO INFORMATION ................... 38
2. EXPLODED VIEWS AND PARTS LIST ..... 3 3. PACK|NG ......................... . 42
3. PO BOARDS CONNECTION DIAGRAM ------ 9 9. FOR CT-sss MARK ll/HEM, HB, SD and CT-656
4. SCHEMATIC DIAGRAM ................. 17 MARK ll-S/HEWM TYPES .............. . 43
5. ELECTRICAL PARTS LIST .............. 20 10. PANEL FACILITIES .................. 45
6. AOJUSTMENTS ....................... 23 11. SPECIFICATIONS .................... 47
REGLAGE ............................ 28
AJUSTE .............................. 33

PIONEER ELECTRONIC CORPORATION 4-1. Meguro 1-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 L3H 8E3 Canada

PIOIEER ELECTRONIC [EUROPE] NJ]. Keetberglaan 1, 2740 Beveren, Belgium

PIONEER ELECTRONICS AUSTRALIA PW. LTD. 178484 Boundary Road. Braeside. Victoria 3195. Australia TEL: [03] 58019911
© PIONEER ELECTRONIC CORPORATION 1990

88 APR. 1990 Printed in Japan

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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 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 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 6OHz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5mA.

A- Reading should

9
Leakage not be above

Device current 0-5WA
under tester
test
Test all
exposed metal
surfaces
2-wire cord

0 Also test with
plug reversed Earth
(Usmg 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 CORA
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 maybe
obtained at a nominal charge from PIONEER.