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SRS-DZ10
TABLE OF CONTENTS
Specifications ............................................................................ 1
1.GENERAL ................................................................... 3
2. DIAGRAMS
2-1. Printed Wiring Boards -“ Control Section-“ ...................... 4
2-2. Schematic Diagram -“ Control Section-“ .......................... 5
2-3. Printed Wiring Boards-“ Amplifier Section (Side A) -“ .... 6
2-4. Printed Wiring Boards-“ Amplifier Section (Side B) -“ .... 7
2-5. Schematic Diagram -“ Amplifier Section-“ ....................... 8
2-6. Schematic Diagram -“ Satellite Section-“ ......................... 9
2-7. Printed Wiring Boards -“ Satellite Section-“ ..................... 10
3. EXPLODED VIEWS
3-1. Amplifier Section ............................................................ 10
3-2. Woofer Section ................................................................ 11
3-3. Control Box Section ........................................................ 12
3-4. Satellite Section ............................................................... 13
4. ELECTRICAL PARTS LIST .................................. 14 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.
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.
1. A commercial leakage tester, such as the Simpson 229 or RCA
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.
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)
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
Ã- LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
To Exposed Metal
Parts on Set
0.15 µF
1.5 k-„¦AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
Unleaded solder
Boards requiring use of unleaded solder are printed with the lead
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
-Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
-Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
-Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
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SRS-DZ10
3
3
SRS-DZ10
SECTION 1
GENERAL
This section is extracted
from instruction manual.
LOCATING THE CONTROLS
SECTION 2
DIAGRAMS
For schematic diagrams.
Note:
- All capacitors are in µF unless otherwise noted. (p: pF) 50 WV or
less are not indicated except for electrolytics and tantalums.
- All resistors are in -„¦ and
1/4
W or less unless otherwise specified.
- C : panel designation.
- A : B+ Line.
- B : B-“ Line.
-V oltages are dc with respect to ground under no-signal conditions.
- no mark : Power on
-V oltages are taken with a VOM (Input impedance 10 M -„¦).
V oltage variations may be noted due to normal production toler-
ances.
- Signal path.
F : AUDIO
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each block.)
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part number specified. Note:
Les composants identifiés par
une marque
0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
POWER
V OLUME
BASS
PHONES
MAX
MIN
MAX
MIN
POWER
VOLUME
PHONES
Control Box
VOLUME:
Controls total volume level.
BASS: Adjusts bass level (Subwoofer).
PHONES: Connect to headphones for personal listening.
BASS
For printed wiring boards.
Note:
-X : parts extracted from the component side.
-
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
IC301 TDA7297
- IC Block Diagram
1 4 2 3 56
-“ +
-“ +
7 8910 11 15 12 14 13
-“ +
-“ +
OUT1+
OUT2+ OUT1-
OUT2-
VCC
VCC
IN1
IN2
OUTPUT 2 S-GND
PW-GND ST-BY
MUTE N.C.
N.C.N.C.
V ref
IC302 TDA7482
1 4 2 3 5 6
-“ + -“ +
7 8 9 10 11 15 12 14 13
OUT
BOOTDIODE
BOOT
VREG
FEEDCAP
IN
-VCC SIGN
+VCC SIGN
+VCC POW -VCC POW-VCC POW SGN-GND
ST-BY/MUTE FREQ
N.C.
Caution:
Parts face side:
Parts on the parts face side seen from
(Side A) the parts face are indicated.
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
