Pioneer vsxd 736 s service manual

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(U) PIONEER®

The Art of Entertainment

Service
Manual

AUDIONIDEO STEREO RECEIVER

VSX-I73GS

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Model Power Requirement The voltage can be converted by the

VSX-D7363 following method.

0 AC22O - 230V AC24OV, >I<
O AC24OV

>l< : Alter the wiring of the Dower-supply block at the primary winding of Dower-transformer referring to the "Line Voltage
Selection" described in Service Manual.

ORDER NO.
RRV 1 7 8 0

CONTENTS
1. SAFETY INFORMATION ................................................... 2
2. EXPLODED VIEWS AND PARTS LIST ............................. 3
3. SCHEMATIC DIAGRAM .................................................... 8
4. PCB CONNECTION DIAGRAM ....................................... 34
5. PCB PARTS LIST ............................................................. 48
6. ADJUSTMENT ................................................................. 55
7. GEN ERAL INFORMATION ............................................... 57
7.1 PARTS ...................................................................... 57
7.1.1 IC ................................................................... 57
7.1.2 DISPLAY ....................................................... 75
7.2 INSTALLING THE DOOR PANEL ............................. 77
7.3 BLOCK DIAGRAM .................................................... 78
7.4 REMOTE CONTROL UNIT ....................................... 80
8. PAN EL FACILITIES AND SPECIFICATIONS ................... 84

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

PIONEER ELECTRONICS SERVICE, INC. P.O.Box 1760, Long Beach, CA 90801-1760, USA.
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923

© PIONEER ELECTRONIC CORPORATION 1997 T-FZK MAY 1997 Printed in Belgium

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VSX-D73GS

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary 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.

NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols -I

(fast operating fuse) and/or {3- (slow operating fuse) on PCB indicate that replace-

ment parts must be of 'dentical designation.

REMARQUE
(POUR MODELE CANADIEN SEUL-M-N I)
Les symboles de fusible I

(fusible de type rapide) et/ou E- (fusible de type lent) sur CCI indiquent que

les pieces de remplacement doivent avoir la meme designation.

(FOR USA MODEL ONLY)
1. SAFETY PRECAUTIONS

The following check should be performed for the
continued protection of the customer and service
technician.

ANY MEASUREMENTS NOT WITHIN THE
LIMITS OUTLINED ABOVE ARE INDICATIVE
OF A POTENTIAL SHOCK HAZARD AND

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

Reading should

not be above
Leakage O 5 m A
current '

Device tester
under
test : + -
Test all
exposed metal

suflaces

I

\§

Also test with S

@ plug reversed 3
(Using AC adapter Earth
plug as required)

AC Leakage Test

ground

MUST BE CORRECTED BEFORE RETURN-
ING THE APPLIANCE TO THE CUSTOMER.

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the
protection afforded by them necessarily can be obtained
by using replacement components rated for voltage,
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 . 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. Forthe latest
information, always consult the current PIONEER
Service Manual. A subscription to, or additional copies
of, PIONEER Service Manual may be obtained at a
nominal charge from PIONEER.