Pioneer f 449 l service manual

Page 1

(1,9 PIONEER

The Art of Entertainment

ORDER NO.
ARP2243
FM/AM DIGITAL SYNTHESIZER TUNER
F -449 -S
F -449 L
F-449, F-449-S AND F-449L HAVE THE FOLLOWING:
Model -
Type Power Requirement Remarks
F449 F449~S F449L .
Hsz O O - AczzoV-zaov. 240v (switchable) *
HE - - O ACZZDV-230V, 240V (switchable) *
HB - - O ACZZOV-ZSOV, 240V (switchable) *
HIXI B 0 ~ - ACZZOV-ZSOV, 240V (switchable) "
HEWXl B ~ - O AC220V¢230V, 240V (switchable) *
KU O - - ACI 20V only
ACIIOV. 120-127V, 220V. 240V
SD 0 _ _ (switchable)

" Change the primary wiring of the power transformer.

O This manual is applicable to the F-449/HEWZ, F-449-S/HEWZ, F-449L/HE and HB
types.

0 As to the F-449-S/HEWZ, F-449L/HE and HB types, refer to page 30.

0 As to the other types, refer to applicable service manuals.

O The F-449-S Is the same as the F-449 except for color.

0 The F-449L covers MW/LW bands while the F-449 covers MW only.

0 Ce manuel pour Ie service comprend les explications de réglage en frangais.

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

PIONEER ELECTRONIC CORPORATION 4-1, Meguro i-Chome, Meguro-ku, Tokyo 158, Japan

PIONEER ELECTRONICS SERVICE INC. PO Box 1760 Long Beach, California 90801 U S A.

PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drive Markham Ontario L3R 8E3 Canada

PIONEER ELECTRONIC [EUROPE] N. V. Keemerglaan I 9120 Beveren. Belgium

PIONEER ELECTRONICS AUSTRALIA PTY LTD. 178 184 Boundary Road Braeside, Viciorla 3195, Ausiralia TEL: {03] 58079911

© PIONEER ELECTRONIC CORPORATION 1991 SN APR 1991 Pfimad in Jame

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CONTENTS

PS"

1.

SAFETY |NFORMAT|ON ............................. 2
EXPLODED VIEWS, PACKING AND I

PARTS L|ST............. ................................. ...... 3
SCHEMATIC DIAGRAM ...................... 6
P.C. BOARDS CONNECTION DIAGRAM - ---15
P.C.B.'S PARTS LIST .............. .......21

ADJUSTMENTS ~
REGLAGES

99?

FOR F-449L/HE, HB AND F-449-S/HEWZ

TYPES .............. .............................. .30

SD

SPECIFICATIONS -
9. 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 & 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.

SAFETY INFO RMATION

"(FOR USA MODEL ONLYI
1.8AFETY 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 22972 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.)t 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.

Reading should
Leakage not be above

Device ° 5'
under
lest
Test all
exposed metal
surfaces
Z»wire cord

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

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.

AJUSTES ........... ............................... 28.