Sony STR-DE525 / STR-V515 Service Manual ▷ View online
STR-DE525/V515
US Model
Canadian Model
E Model
Australian Model
PX Model
STR-DE525
Chinese Model
STR-V515
SERVICE MANUAL
FM STEREO/FM-AM RECEIVER
— Continued on next page —
SPECIFICATIONS
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.
Sony Corporation
Audio Group
Published by Sony Engineering Corporation
Photo : STR-DE525
Ver. 1.2 2005.03
9-922-797-13
2005C16-1
© 2005.03
— 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
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)
SAFETY CHECK-OUT
To Exposed Metal
Parts on Set
Parts on Set
0.15
µ
F
1.5k
Ω
AC
voltmeter
(0.75V)
voltmeter
(0.75V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
1.
GENERAL
······································································ 4
2.
TEST MODE
····························································
6
3.
DIAGRAMS
3-1.
Circuit Boards Location ····················································· 7
3-2.
Block Diagram — Main Section — ··································· 9
3-3.
Block Diagram — Power Section — ······························· 11
3-4.
Printed Wiring Board — AMP Section — ······················· 13
3-5.
Schematic Diagram — AMP Section — ·························· 15
3-6.
Printed Wiring Board — Video Section — ······················ 17
3-7.
Schematic Diagram — Video Section — ························· 19
3-8.
Printed Wiring Board — Input Section — ······················· 21
3-9.
Schematic Diagram — Input Section — ·························· 23
3-10. Printed Wiring Board — Display Section — ··················· 25
3-11. Schematic Diagram — Display Section — ······················ 27
3-12. Printed Wiring Board — Power Section — ····················· 29
3-13. Schematic Diagram — Power Section — ························ 31
3-14. IC Block Diagrams ··························································· 35
3-11. Schematic Diagram — Display Section — ······················ 27
3-12. Printed Wiring Board — Power Section — ····················· 29
3-13. Schematic Diagram — Power Section — ························ 31
3-14. IC Block Diagrams ··························································· 35
4.
EXPLODED VIEWS
4-1.
Front Panel Section ·························································· 38
4-2.
Chassis Section ································································· 39
5.
ELECTRICAL PARTS LIST
··································· 40
— 4 —
SECTION 1
GENERAL
LOCATION AND FUNCTION OF CONTROLS
[FRONT PANEL]
Photo : STR-DE525
1
2 3
5
4
6
7
8
9
!º
!¡
!™
!¢
!§
!•
@º
!∞
!¶
!£
!ª
@£
@¡
@™
#™
#¡
#º
@ª
@∞
@•
@§
@¢
@¶
#£
1
POWER switch
2
MULTI CURSOR CONTROL
3
DISPLAY REAR LEVEL +, – buttons
4
SURROUND, BASS/TREBLE, INDEX indicators
5
5.1/DVD, TONE, BASS BOOST indicators
6
MASTER VOLUME control
7
BALANCE control
8
MUTING button
9
SOUND FIELD ON/OFF button
!º
SOUND FIELD MODE button
!¡
BASS BOOST button
!™
TONE ON/OFF button
!£
5.1/DVD INPUT button
!¢
SOUND FIELD GENRE button
!∞
PHONO FUNCTION button
!§
TAPE/MD FUNCTION button
!¶
TV/LD FUNCTION button
!•
TUNER FUNCTION button
!ª
VIDEO FUNCTION button
@º
CD FUNCTION buttons
@¡
Numeric buttons
@™
DIRECT TUNING button
@£
SHIFT buttons
@¢
PRESET TUNING +, – buttons
@∞
MEMORY button
@§
FM/AM button
@¶
FM MODE button
@•
SLEEP button
@ª
TUNING +, – buttons
#º
PHONES jack
#¡
SPEAKERS A, B switches
#™
SET UP button
#£
CURSOR MODE button