Pioneer ctw 450 r service manual

Page 2

CT-W450R, CT-W355R. CT-W350R

CONTENTS
1. SAFETY INFORMATION ................. ............. 2 6.
2. EXPLODED VIEWS. PACKING AND 6. MUSTE ~~ '-
PARTS ST ..... ............... 3 7 FOR CT-W45OH/KUCXJ, CT-w355FI/KUC.
3. P.C. BOARDS CONNECTION DIAGRAM - "19 KUCXJ, CT-W350R/KUC, KUCXJ. HEMXJ, H3.
4. SCHEMATIC DIAGRAM- HBXJ HPWXJ AND SDXJ TYPES ...... ........ .....41
5. PCB's PARTS LIST ----- 8. SPECIFICATIONS ------------
6. ADJUSTMENTS .......................... ...... 30 9. PANEL FACILITIES-"mu"-

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 eouipment 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 toxieant 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

r-(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

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.

Measure leakage current to a known earth ground
(water pipe. conduit, etc.) by connecting a leakage
current tester such as Simpson Modal 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals.
scrawheads. metal overlays. control shaft. ethi Plug
the AC line card of the appliance directly into a 120V
AC sol-l2 outlet and turn the AC power switch on. Any
current measured must not exceed 0.5mA.

. Reading should
Lung: not be above
current 05"

Device
under
test

Test all
expotao mull
surfaces

2-wire cord

O Also test with
plug reversed
(Using AC adapter
plug as required)

Earth
ground

AC Leakage Test

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 Serfice Manual may be
obtained at a nominal charge from PIONEER.