Sony STR-D2010 - Table of Contents

| STR-D2010
TABLE OF CONTENTS
perform the following safety check 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 TEST
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 0.5mA (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 instru-
ments.
NV
A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A 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 PUB-
LISHED BY SONY.
means of a VOM or battery-operated AC volt-
meter. 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)
To Exposed Metal
Parts on Set
|
AC
voltmeter
(0.75'V)
0.15uF = S1.5k0
eo
= Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
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Section Title Page Section Title Page
1. GENERAL 3-4. Schematic Diagram
Tek MOVELVIOW. a ob. beoclnhet dalled Region ay wh en aaa’ 4 —Pre, Main Amp/Power Section— ............ 25
1-2. Parts Identification ....... 6... cece cece eee eee 5 3-5. Printed Wiring Board
1-3 -‘Basic Controls: os sae avs edith nda teeie heed Paes 7 —Digital Section 2.0.6... cece cece cere ees 28
1-4. Receiving Radio Broadcast Programs............ 7 3-6. Schematic Diagram
1-5. Listening to Other Program Sources ............ 10 —Digital Section— ........ 0. ccc cence ences 31
1-6. Enjoying Digital Sound Effects ..............-. 10 3-7. Schematic Diagram
1-7. Using the Surround Effects ...............-0055 11 —Display Section—....-.. 0... ccc eee es 34
1-8. Using the Parametric Equalizer ............-... 12 3-8. Printed Wiring Board
1-9.
Using
the
Digital
Dynamic
Sound
..............
13
—Display
Section—...
1.2.0...
cee
eee
eee
tens
37
1-10. Recommended Combinations of the Digital 3-9. Printed Wiring Boards
Sound
Effects
.......-ccescee
cece
reenter
eeeeane
14
—Tuner
Section—
........
cece
eee
eens
41
3-10. Schematic Diagram
2. ELECTRICAL ADJUSTMENTS.................... 15 =Tuner Section cee sca sc anedieasadender bese’ 43
3-11. Explanation of IC411 (wPD78C14) .............. 45
3. DIAGRAMS
3-1. Block Diagram.......... eee eee e eee ees 17 4. EXPLODED VIEWS
3-2. Circuit Boards Location ............: sees eens 19 4-1. Front Panel Assembly ........-....0ee eevee es 47
3-3. Printed Wiriwg Boards 4-2. Chassis Assembly............ 0000s eee eee 48
—Pre, Main Amp/Power Section— ............ 21
5. ELECTRICAL PARTS LIST .............--....05- 49
SAFETY CHECK-OUT
After correcting the original service problem, 3. Measuring the voltage drop across a resistor by