Table Of Contents - Sony STR-D715 Service Manual

TABLE OF CONTENTS SAFETY CHECK-OUT
Section Title Page After correcting the original service problem, perform
the following safety checks before releasing the set to
1é "SERVICING NOT E iccdiccvesrtacmimeimecicedumedetcondeontavgoent 3 ihescusionier
Check the antenna terminals, metal trim, "metallized"
Bie "SRST NEE RA Mk secon os ascyect win awa gent cetainnegvanten teem 4 knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.
3. DIAGRAMS
3-1. Circuit Boards LOCAtION .0...c...cecesecsteseseseseecsessseseseeeseseseees 7 LEAKAGE
3-2. Semiconductor Lead Layouts ...........cccccecessesseecseeeeeeeres 8
3-3. Printed Wiring Boards - SURROUND Section -........ 10 The AC leakage from any exposed metal part to earth
3-4. Schematic Diagram - SURROUND Section -............ 13 ground and from all exposed metal parts to any
ee: ; exposed metal part having a return to chassis, must not
3-5. Schematic Diagram - MAIN Section - ...........cceeee 17 :
3-6. Printed Wiring Boards - MAIN Section - .............6 21 ERC COO ALO scroampe ts): Leaeaeecumen
; can be measured by any one of three methods.
3-7. Printed Wiring Boards - DISPLAY Section -.............. 26 .
3-8. Schematic Diagram - DISPLAY Section -........... 31 1. A commercial leakage tester, such as the Simpson 229
3-9. IC Pin Functions or RCA WT-540A. Follow the manufacturers'
© 10106 (TC9174P) LED Driver... seesseseesseecssseeees 34 instructions to use these instruments.
¢ 1C202 ((uPD75518GF-195-3B9) Main Controller......... 35 :
2. A battery-operated AC milliammeter. The Data
4. EXPLODED VIEWS Precision 245 digital multimeter is suitable for this
Acie. "Cabinet SBCHOM wx..cilx:s.cccblccclctaed eaneeerhccncs 37 job.
4-2. Chassis S@CtION 00.0... ccc ccescesssssessccceceescesessvecsncereccecerseseseeess 38
3. Measuring the voltage drop across a resistor by means
of a VOM or battery-operated AC voltmeter. The
5. ELECTRICAL PARTS LIST 00.0.0... ccceeeeeeeeees 39 "limit" indication is 0.75 V, so analog meters must
have an accurate low-voltage scale. The Simpson 250
MODEL IDENTIFICATION STR-D715 and Sanwa SH-63Trd are examples of a passive VOM
- Specification Label - STR-D915
that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable.
FM STEREO FM-AM RECEIVER
UMUMUUUUUhthtb
To Exposed Metal
Parts on Set
AC
aa voltmeter
(0.75V)
US model : 120V AC, 60Hz 195W (D715)
120V AC, 60Hz 210W (D915) = Earth Ground
Canadian model : 120V AC, 60Hz 280VA (D715) :
120V AC, 60Hz 305VA (D915) Fig. A. Using an AC voltmeter to check AC leakage.
Australian model :240V AC, 50Hz 220W
Notes on chip component replacement
¢ Never reuse a disconnected chip component.
¢ Notice that the minus side of a tantalum capacitor may be
damaged by heat.
SAFETY-RELATED COMPONENT WARNING !! ATTENTION AU COMPOSANT AYANT RAPPORT
: ne
COMPONENTS IDENTIFIED BY MARK A\ OR DOTTED LINE ioe Ree ese Fae are ae nek
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND IN 7
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE DE
REPLACE THESE COMPONENTS WITH SONY PARTS ESNCTIONNEUENT. HIE' REAELAGCEH. GES
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS COMPOSANTS QUE PAR DES PIECES SONY DONT LES
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. NUMEROS SONT DONNES DANS CE MANUEL OU DANS
LES SUPPLEMENTS PUBLIES PAR SONY.