Sony STR-DE915 / TA-V909 / TA-VE910 Service Manual ▷ View online
STR-DE915/TA-V909/VE910
US Model
Canadian Model
STR-DE915
AEP Model
UK Model
E Model
TA-VE910
Australian Model
STR-DE915
Chinese Model
TA-V909
PX Model
STR-DE915
SERVICE MANUAL
STR-DE915
FM STEREO/FM-AM RECEIVER
TA-V909/VE910
INTEGRATED AV AMPLIFIER
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-920-940-13
2003G16-1
© 2003.07
Ver 1.2 2003. 07
SPECIFICATIONS
Photo : STR-DE915
Dolby Laboratories Licensing Corporation.
“DOLBY” the double-D symbol
“DOLBY” the double-D symbol
a
“AC-3” and “PRO LOGIC” are
trademarks of Dolby Laboratories Licensing Corporation.
— Continued on next page —
— 2 —
— 3 —
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
! OR DOTTED LINE WITH
MARK
! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE
! SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
TABLE OF CONTENTS
SAFETY CHECK-OUT
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers).
Leakage current can be measured by any one of three methods.
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers).
Leakage current can be measured by any one of three methods.
1.
A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2.
A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
digital multimeter is suitable for this job.
3.
Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
Earth Ground
AC
voltmeter
(0.75V)
voltmeter
(0.75V)
1.5k
Ω
0.15
µF
Fig. A. Using an AC voltmeter to check AC leakage.
To Exposed Metal
Parts on Set
Parts on Set
1.
GENERAL
······································································ 4
2.
DIAGRAMS
2-1.
Circuit Boards Location ····················································· 6
2-2.
Block Diagram — Main Section — ··································· 7
2-3.
Block Diagram — Video In/Out Section — ····················· 11
2-4.
Block Diagram —Power Section — ································ 13
2-5.
Schematic Diagram — Video Section — ························· 16
2-6.
Printed Wiring Board — Video Section — ······················ 19
2-7.
Printed Wiring Board — Surround Section — ················· 22
2-8.
Schematic Diagram — Surround Section — ··················· 25
2-9.
Printed Wiring Board — Digital Section — ···················· 30
2-10. Schematic Diagram — Digital Section — ······················· 33
2-11. Schematic Diagram — AMP, Power Supply Section — ·· 38
2-12. Printed Wiring Board
2-11. Schematic Diagram — AMP, Power Supply Section — ·· 38
2-12. Printed Wiring Board
— AMP, Power Supply Section — ··································· 43
2-13. Schematic Diagram — Display Section — ······················ 48
2-14. Printed Wiring Board — Display Section — ··················· 53
2-15. IC BLOCK DIAGRAMS ················································· 57
2-16. IC PIN FUNCTION ························································· 61
2-14. Printed Wiring Board — Display Section — ··················· 53
2-15. IC BLOCK DIAGRAMS ················································· 57
2-16. IC PIN FUNCTION ························································· 61
3.
EXPLODED VIEWS
3-1.
FRONT PANEL SECTION ·············································· 72
3-2.
BACK PANEL SECTION ················································ 73
3-3.
CHASSIS SECTION ························································ 74
4.
ELECTRICAL PARTS LIST
··································· 75
— 4 —
SECTION 1
GENERAL
LOCATION AND FUNCTION OF CONTROLS
[FRONT PANEL]
1
2
3
4
5
67
8
9
!º
!¡
!™
!£
!¢
!∞
!§
!¶
!•
!ª
@º
@¡
@™
@£
@¢
@∞
@§
@¶
@•
Photo : STR-DE915 (US)
1
DPC MODE button
2
POWER switch
3
SUR, TONE, INDEX indicators
4
Digital processing control buttons
5
Function indicators
6
DIRECT PASS indicator
7
DISCRETE indicator
8
MASTER VOLUME control
9
BALANCE control
!º
VIDEO 3 INPUT jack
!¡
BASS BOOST button/indicator
!™
SOUND FIELD ON/OFF button
!£
MODE button
!¢
GENRE button
!∞
DIRECT PASS, SET UP, INPUT MODE buttons
!§
AUDIO FUNCTION buttons
!¶
VIDEO FUNCTION buttons
!•
DIRECT button (STR-DE915)
!ª
SHIFT button (STR-DE915)
@º
Numeric buttons (STR-DE915)
@¡
PRESET TUNING +, – buttons (STR-DE915)
@™
MEMORY button (STR-DE915)
@£
DISPLAY button
@¢
FM/AM button (STR-DE915)
@¢
DIMMER button (TA-V909/VE910)
@∞
FM MODE button (STR-DE915)
@§
TUNING +, – buttons (STR-DE915)
@¶
PHONES jack
@•
SPEAKERS switch