Sony STR-DE1015G Service Manual
STR-DE1015G
SERVICE MANUAL
US Model
Canadian Model
SPECIFICATIONS
— Continued on next page —
MICROFILM
FM STEREO FM-AM RECEIVER
— 1 —
— 2 —
TABLE OF CONTENTS
SAFETY CHECK-OUT
1. SERVICING NOTE
.......................................................... 4
2. GENERAL .......................................................................... 5
3. DISASSEMBLY
3-1. Front Panel .......................................................................... 26
3-2. Balance Board, Display Board and Volume Board............. 26
4. TEST MODE ..................................................................... 27
5. ELECTRICAL ADJUSTMENTS ............................... 28
6. DIAGRAMS
6-1. IC Pin Functions................................................................. 30
6-2. Circuit Boards Location ...................................................... 47
6-3. Block Diagrams
• Input/Output Section........................................................ 49
• Power Amp Section ......................................................... 51
• DA Section....................................................................... 53
• DSP Section ..................................................................... 55
• AC-3 (RF) Section........................................................... 57
• OSD Section .................................................................... 59
• OSD Control Section ....................................................... 61
• Panel Section ................................................................... 63
• Power Section .................................................................. 65
6-4. Printed Wiring Board — Input/Output Section — ............. 68
6-5. Schematic Diagram — Input/Output Section — ................ 71
6-6. Schematic Diagram — Power Amp Section —.................. 75
6-7. Printed Wiring Board — Power Amp Section — ............... 79
6-8. Printed Wiring Board — Digital Section — ....................... 83
6-9. Schematic Diagram — Digital (D/A) Section — ............... 87
6-10. Schematic Diagram — Digital (Control) Section — ....... 91
6-11. Schematic Diagram
— Digital (Dolby AC-3) Section —................................. 95
6-12. Printed Wiring Board — Panel Section —....................... 98
6-13. Schematic Diagram — Panel Section — ....................... 101
6-14. Schematic Diagram — OSD Section — ........................ 105
6-15. Printed Wiring Board — OSD Section —...................... 109
6-16. IC Block Diagrams......................................................... 112
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 A C 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 A C v oltmeter. 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
0.15µF
1.5k
Ω
Earth Ground
AC
voltmeter
(0.75V)
Fig. A. Using an AC voltmeter to check AC leakage.
7. EXPLODED VIEWS
7-1. Case Section...................................................................... 117
7-2. Front panel Section ........................................................... 118
7-3. OSD Board Section........................................................... 119
7-4. Chassis Section ................................................................. 120
8. ELECTRICAL PARTS LIST ...................................... 121
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 !!
COMPONENTS IDENTIFIED BY MARK ! OR DO TTED 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.
MODEL IDENTIFICATION
— BACK PANEL —
Parts No.
4-989-885-4
4-989-885-5
ATTENTION AU COMPOSANT AYANT RAPPORT
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE ! SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLA CER CES COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS
SONT DONNÉS DANS CE MANUEL OU DANS LES
SUPPLÉMENTS PUBLIÉS PAR SONY.
US model
Canadian model
À LA SÉCURITÉ!!
Model
— 3 —
Parts No.
SECTION 1
SERVICING NOTE
ALL CLEAR
Mode which erases all the user memories registered in this unit and
sets to setting at shipment.
Procedure:
1. With the power turned OFF, press the POWER button while
pressing the MODE button, AUDIO FUNCTION > and
VIDEO FUNCTION > button simultaneously to turn ON the
power.
2. ALL CLEAR 3/5 will be displayed on the fluorescent indicator
tube, and ALL CLEAR will be executed.
FACTORY SET
Mode which sets the memory of the unit to the setting of adjustment and check at factory. (Not used for servicing.)
Procedure:
1. With the power turned OFF, press the POWER button while
pressing the MODE button and AUDIO FUNCTION > button
simultaneously to turn ON the power.
2. FACTORY SET will be displayed on the fluorescent indicator
tube, and FACTORY SET will be executed.
Note: In case you return the unit to the customer, do not perform
FACTRY SET. If you do it, perform ALL CLEAR.
Fluorescent indicator tube, LED all lit mode
Adjustment of OSD Screen Position
The position of the screen can be adjusted freely to correct the deviation of the OSD screen caused by the monitor type that users are
using.
1. Move the cursor of the remote commander supplied as an accessory, and display the OSD screen.
2. Click the SET UP of the OSD screen.
3. Next click TV SET.
4. Next click GRAPHIC POSITION SET.
5. The screen for adjusting the OSD screen position will be displayed. Adjust the position with the remote commander supplied
as an accessory.
6. Click EXIT to end.
AM Tuning Step 9 kHz/10 kHz Selection
Method:
1. Turn ON the power, set the AUDIO FUNCTION to AM, and
turn OFF the power.
2. While pressing the TUNING + button or PRESET TUNING +
button, press the POWER button.
3. “AM 9K STEP” or “AM 10k STEP” will be displayed on the FL
display tube.
Procedure:
1. With the power turned OFF, press the POWER button while
pressing the MODE button and VIDEO FUNCTION > b utton
simultaneously to turn ON the power.
2. The fluorescent display tubes and LEDs will all light up. Release the buttons in the order of VIDEO FUNCTION > , and
MODE .
3. The Fluorescent indicator tube display changes as follows by
pressing the DPC MODE .
(Pressing the other buttons will exit this mode.)
9
Fluorescent indicator tubes, LEDs are all lit
DIGITAL
12345
AC-3 RF
SOUND FIELD
DISCRETE PRO LOGIC MONO STEREO
• Press DPC MODE button.
9
Partial lighting of fluorescent indicator tube 1, LEDs are OFF *1
• Press DPC MODE button.
9
Partial lighting of fluorescent indicator tube 2, LEDs are OFF *1
MEMORY
• Press DPC MODE button.
9
Fluorescent indicator tube and all LEDs are OFF
• Press DPC MODE button.
9
*1 Those other than the POWER LED go OFF.
4. To exit the mode, press the POWER button to turn OFF the
power.
— 4 —
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
3-1. FRONT PANEL
3
Flat type wire (19 core)
(CNS701)
1
Three screws
(BVTP3x8)
2
Screw
(BVTP3x8)
4
Flat type wire (CNJ203)
6
Three screws
(BVTP3x8)
7
Front panel
3-2. BALANCE BOARD, DISPLAY BOARD AND VOLUME BOARD
8
0
DISPLAY board
Four screws
(BVTP2.6x8)
9
Remove the four claws.
5
Flat type wire (21 core)
(CN3301)
8
Flat type wire (19 core)
(CNS402)
2
Nut
1
Knob
(Volume)
3
Knob
(Balance)
7
Two screws
(BVTP2.6x8)
6
— 26 —
Bracket
5
BALANCE board and
VOLUME board
4
Two screws
(BVTP2.6x8)
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