Pioneer sx 1900 service manual

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I rt Of Entertainment

x ,-2900
SX-EBDD

SX- 1900;
SX-24D

MODELS SX '- 2900, SX - 2800. SX- 1900 fiND SX-240 HAVE FOLLOWING VERSIONS :

Applicable model 3:
Type , Power requirement Export destination
,SX~2900 SX-ZBOO SX-1900 SX-240
KUC _ o o o 0- Adgzov only U.S.A. and Canada.
SD ., O a _ O __ AGE: 10V, 120-127V. 220V, Kingdom of Saudi Arabia and
249V (switchable) General market.
KUCXJ - - O - a, 0V only U.S.A. and Canada,

v' This manual is applicable to the SX-ZSOOIKUG,

. SX - 240/KUC types.

LSD, SX~2800IKUC, SX- 1900/KUC, SD and

° As to the SX-72900/SD, SX -2800/KUC, SX - 1900/KUC, SD and SX -24OIKUC types. referrto

pages 31 + 34.

' As to the SX- 1900/KUCXJ ty

pe, refer to applicable service manual.

I Ce manual pour le service comprend Ies explications de réglage an irangais.

- Esta manual de servicio trata del métodn aillsfe escrito en espafiol.

PIONEER ELECTRONIC CORPORATION

PIONEER ELECTRONIC [EUROPE] N.V. Keetberglaan 1, 2740 BEVeren, Belgium

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178484 Boundar

© PIONEER ELECTRONIC CORPORATION 1996

4-1, Meguro 1-Chome, Meguro»ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE INC. PO. Box 1760, Long Beach, California 90801 U.S.A.
PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Driv'e, Markham, Ontario L3R 853 Canada

y Road, Braeside. Vicioria 3195. Australia TEL: [03) 580-9911

Y1 NOV. 1990 Printed m Japan.

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CONTENTS

1. SAFETY INFORMATION ------------------------------ 2
2. EXPLODED VIEWS, PACKING AND

PARTS LIST ................................................ 3
3. SCHEMATIC DIAGRAM ---------- 7
4. P.C.BOARDS CONNECTION DIAGRAM --------- 12
5. P.C.B s PARTS LIST -------------------------------- 21
6. ADJUSTMENTS --------------------------------------- 25

8.
9.

. REGLAGE
. AJUSTE~-
. FOR SX-2900/SD, sx-2800/Kuc.

------- 29

SX-1900/KUC, SD AND SX-240/KUC
TYPES ...................................................... 31
PANEL FACILITIES - --
SPECIFlCATlONS .......................................

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.l. Plug
the AC line cord of the appliance directly into a 120V
AC 60H: 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
2-wire cord

@ Also test with
plug reversed
lUsing AC adapter
plug as required)

. Earth
ground

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO-
TENTIAL SHOCK HAZARD AND MUST BE CORv
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.