STR-DN1020 - Sony Audio Service Manual (repair manual)

2012B80-1

© 

2012.02

This receiver incorporates Dolby* Digital and Pro Logic Surround and the DTS** 
Digital Surround System.
*  Manufactured under license from Dolby Laboratories. Dolby, Pro Logic, and the 

double-D symbol are trademarks of Dolby Laboratories.

**  Manufactured under license under U.S. Patent #’s: 5,451,942; 5,956,674; 5,974,380; 

5,978,762; 6,226,616; 6,487,535; 7,212,872; 7,333,929; 7,392,195; 7,272,567 
& other U.S. and worldwide patents issued & pending. DTS and the Symbol are 
registered trademarks, & DTS-HD, DTS-HD Master Audio, and the DTS logos 
are trademarks of DTS, Inc. Product includes software. © DTS, Inc. All Rights 
Reserved.

This receiver incorporates High-Defi nition Multimedia Interface (HDMI

TM

) technology. 

HDMI, the HDMI Logo, and High-Defi nition Multimedia Interface are trademarks or 
registered trademarks of HDMI Licensing LLC in the United States and other countries.

Sirius subscriptions are sold separately and are governed by the Sirius Terms 
and Conditions (see www.sirius.com). Be sure to read this agreement before you
purchase your subscription. Sirius, XM and all related marks and logos are trademarks 
of Sirius XM Radio Inc. and its subsidiaries. All rights reserved.

The font type (Shin Go R) installed in this receiver is provided by MORISAWA & 
COMPANY LTD. These names are the trademarks of MORISAWA & COMPANY
LTD., and the copyright of the font also belongs to MORISAWA & COMPANY LTD.

iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of Apple Inc., 
registered in the U.S. and other countries.
All other trademarks and registered trademarks are of their respective holders. In this 
manual, ™ and ® marks are not specifi ed.

“Made for iPod” and “Made for iPhone” mean that an electronic accessory has been 
designed to connect specifi cally to iPod or iPhone, respectively, and has been certifi ed 
by the developer to meet Apple performance standards.

Apple is not responsible for the operation of this device or its compliance with safety 
and regulatory standards. Please note that the use of this accessory with iPod or iPhone 
may affect wireless performance.

DLNA and DLNA CERTIFIED are trademarks and/or service marks of the Digital 
Living Network Alliance.

Wake-on-LAN is a trademark of International Business Machines Corporation in the 
United States.

Microsoft, Windows, Windows Vista, Window 7 ™, and Windows Media are trademarks
of Microsoft Corporation in the United States and/or other countries.

This product is protected by certain intellectual property rights of Microsoft Corporation.
Use or distribution of such technology outside of this product is prohibited without a 
licence from Microsoft or and authorized Microsoft subsidiary.

MPEG Layer-3 audio coding technology and patents licensed from Fraunhofer IIS and 
Thomson.

“x.v.Color (x.v.Colour)” and “x.v.Color (x.v.Colour)” logo are trademarks of Sony 
Corporation.

“BRAVIA” is a trademark of Sony Corporation.

“PlayStation” is a registered trademark of Sony Computer Entertainment Inc.

“WALKMAN” is a registered trademark of Sony Corporation.

MICROVAULT is a trademark of Sony Corporation.

VAIO and VAIO Media are registered trademarks of Sony Corporation.

PARTY STREAMING and PARTY STREAMING logo are trademarks of Sony 
Corporation.

– Continued on next page –

With 8 ohm loads, both channels driven, from
20 

Hz

 – 20,000 Hz; rated 100 watts per 

channel minimum RMS power, with no more 
than 0.09% total harmonic distortion from 

 

250 milliwatts to rated output.

US model

1)

Minimum RMS Output Power 
(8 ohms, 20 Hz – 20 kHz, THD 0.09%)

 

100 W + 100 W

Stereo Mode Output Power 
(8 ohms, 1 kHz, THD 1%)

110 W + 110 W

Surround Mode Output Power

2) 

(8 ohms, 1 kHz, THD 10%)

150 W per channel

CND model

1)

Minimum RMS Output Power 
(8 ohms, 20 Hz – 20 kHz, THD 0.09%)

 

95 W + 95 W

Stereo Mode Output Power 
(8 ohms, 1 kHz, THD 1%)

110 W + 110 W

Surround Mode Output Power

2) 

(8 ohms, 1 kHz, THD 10%)

150 W per channel

AEP, UK and AUS models

1)

Stereo Mode Output Power 
(8 ohms, 1 kHz, THD 1%)

100 W + 100 W

Surround Mode Output Power

2) 

(8 ohms, 1 kHz, THD 10%)

140 W per channel

1)

Measured under the following conditions:

2)

Reference power output for front, center, 
surround, surround back and front high speakers. 
Depending on the sound field settings and the 
source, there may be no sound output.

Frequency response

Analog

10 Hz – 70 kHz,

 

+0.5 dB/–2 dB (with sound 
field and equalizer 
bypassed)

Input

Analog

Sensitivity: 500 mV/

 

50 kohms

 

S/N

3)

: 96 dB

 

(A, 500 mV

4)

)

Digital (Coaxial) Impedance: 75 ohms

S/N: 100 dB

 

(A, 20 kHz LPF)

Digital (Optical)

S/N: 100 dB

 

(A, 20 kHz LPF)

Output (Analog)

AUDIO OUT

Voltage: 500 mV/1 kohm

SUBWOOFER

Voltage: 2 V/1 kohm

Equalizer

Gain levels

±10 dB, 1 dB step

3)

INPUT SHORT (with sound field and equalizer 
bypassed).

4)

Weighted network, input level.

US, CND

AEP, UK and AUS

120 V AC, 60 Hz

230 V AC, 50 Hz

Tuning range

87.5 MHz – 108.0 MHz

Antenna (aerial)

FM wire antenna (aerial)

Antenna (aerial) terminals

75 ohms, unbalanced

Intermediate frequency

10.7 MHz 

Input/Output (HDMI Repeater block)

1920 × 1080p @ 59.94/60 Hz

a

–

a

a

1920 × 1080p @ 50 Hz

a

–

a

a

1920 × 1080p @ 29.97/30 Hz

a

a

a

a

1920 × 1080p @ 23.98/24 Hz

a

a

a

a

1920 × 1080i @ 59.94/60 Hz

a

a

a

a

1920 × 1080i @ 50 Hz

a

a

a

a

1280 × 720p @ 59.94/60 Hz

a

a

a

a

1280 × 720p @ 50 Hz

a

a

a

a

1280 × 720p @ 29.97/30 Hz

a

a

a

a

1280 × 720p @ 23.98/24 Hz

a

a

a

a

720 × 480p @ 59.94/60 Hz

a

–

–

–

720 × 576p @ 50 Hz

a

–

–

–

640 × 480p @ 59.94/60 Hz

a

–

–

–

Tuning range

Antenna (aerial)

Loop antenna (aerial)

Intermediate frequency

 

450 kHz

Inputs/Outputs

Video:

1 Vp-p, 75 ohms

COMPONENT VIDEO:

Y: 1 Vp-p, 75 ohms
P

B

: 0.7 Vp-p, 75 ohms

P

R

: 0.7 Vp-p, 75 ohms

80 MHz HD Pass Through

10 kHz step

US, CND     

530 kHz – 

1,710 kHz

 531 kHz – 
 1,710 kHz

AEP, UK and AUS

 1,602 kHz

– 

531 kHz – 

9 kHz step

DC 5V 1.0 A MAX

Supported bit rate*

MP3 (MPEG 1 Audio 
Layer-3):
32 kbps – 320 kbps, VBR
WMA: 48 kbps – 192 kbps
AAC: 48 kbps – 320 kbps
* Compatibility with all 

encoding/writing 
software, recording 
devices and recording 
media cannot be 
guaranteed. 

Transfer speed

Full-speed

Supported USB device

Mass Storage Class

Maximum current

500 mA

10BASE-T/100BASE-TX

Power consumption
Power consumption (during standby mode)

0.3 W (When “Ctrl for 
HDMI” is set to “OFF”)

Dimensions (width/height/depth) (Approx.)

430 mm × 158 mm × 

 

322.6 mm (17 in × 6 1/4 in 
× 12 3/4 in) including 
projecting parts and 
controls

Mass (Approx.)

240 W

8.8 kg (19 lb 7 oz)

Power requirements

US, CND

AEP, UK and AUS

120 V AC, 60 Hz

230 V AC, 50/60 Hz

Supplied accessories
s

Operating Instructions

s

Quick Setup Guide

s

GUI Menu List

s

FM wire antenna (aerial) (1)

s

AM loop antenna (aerial) (1)

s

Remote control (1) 

– RM-AAP063 (US and CND models 

only)

– RM-AAP064 (Other models)

 

s

R6 (size AA) batteries (2)

s

Optimizer microphone (ECM-AC2) (1)

Design and specifications are subject to 
change without notice.

AUS 

: Australian model

CND 

: Canadian model

Halogenated flame retardants are not used in 
the certain printed wiring boards.

s Abbrevation

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  CHECK-OUT
After correcting the original service problem, 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 0.5 mA (500 microamperes.). 
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 2 V AC range are suitable. (See 
Fig. A)

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

0  SUR  

  .............................................   5

2-1. Disassembly 

Flow 

...........................................................   6

2-2.   Case .................................................................................   6
2-3.  D-VIDEO NW Board .....................................................   7
2-4.  Front Panel Block ...........................................................   8
2-5. Tuner 

(FM/AM) 

..............................................................   8

2-6. DIGITAL 

Board 

..............................................................   9

2-7.  Back Panel Block ............................................................   9
2-8. Main 

Block 

.....................................................................  10

2-9. MAIN 

Board 

...................................................................  10

TEST  MODE 

 ............................................................   11

ADJUSTMENT 

 ...........................   13

5-1.  Block Diagram - TUNER/AUDIO Section - ..................   15
5-2.  Block Diagram - DIGITAL, DSP Section - ....................   16
5-3.  Block Diagram - A VIDEO Section - .............................   17
5-4.  Block Diagram - D-VIDEO NW Section (1/2) - ............   18
5-5.  Block Diagram - D-VIDEO NW Section (2/2) - ............   19
5-6.  Block Diagram - KEY/DISPLAY/USB Section -...........   20
5-7.  Block Diagram - POWER KEY Section - ......................   21
5-8.  Printed Wiring Board - DIGITAL Board (Side A) - .......   23
5-9.  Printed Wiring Board - DIGITAL Board (Side B) - .......   24
5-10.  Schematic Diagram - DIGITAL Board (1/4) - ................   25
5-11.  Schematic Diagram - DIGITAL Board (2/4) - ................   26
5-12.  Schematic Diagram - DIGITAL Board (3/4) - ................   27
5-13.  Schematic Diagram - DIGITAL Board (4/4) - ................   28
5-14.  Printed Wiring Board - MAIN Board - ...........................   29
5-15.  Schematic Diagram - MAIN Board (1/4) - .....................   30
5-16.  Schematic Diagram - MAIN Board (2/4) - .....................   31
5-17.  Schematic Diagram - MAIN Board (3/4) - .....................   32
5-18.  Schematic Diagram - MAIN Board (4/4) - .....................   33
5-19.  Printed Wiring Board -
 

D-VIDEO NW Board (Side A) - .....................................   34

5-20.  Printed Wiring Board -
 

D-VIDEO NW Board (Side B) - .....................................   35

5-21.  Schematic Diagram - D-VIDEO NW Board (1/8) - .......   36
5-22.  Schematic Diagram - D-VIDEO NW Board (2/8) - .......   37
5-23.  Schematic Diagram - D-VIDEO NW Board (3/8) - .......   38
5-24.  Schematic Diagram - D-VIDEO NW Board (4/8) - .......   39
5-25.  Schematic Diagram - D-VIDEO NW Board (5/8) - .......   40
5-26.  Schematic Diagram - D-VIDEO NW Board (6/8) - .......   41
5-27.  Schematic Diagram - D-VIDEO NW Board (7/8) - .......   42
5-28.  Schematic Diagram - D-VIDEO NW Board (8/8) - .......   43
5-29.  Printed Wiring Board - DSP Board - ..............................   44
5-30.  Schematic Diagram - DSP Board (1/2) - ........................   45
5-31.  Schematic Diagram - DSP Board (2/2) - ........................   46
5-32.  Printed Wiring Board - A VIDEO Board - ......................   47
5-33.  Schematic Diagram - A VIDEO Board - .........................   48
5-34.  Printed Wiring Board - CONNECTION Board - ............   49
5-35.  Schematic Diagram - CONNECTION Board - ..............   49
5-36.  Printed Wiring Board - STANDBY Board - ...................   50
5-37.  Schematic Diagram - STANDBY Board - ......................   51
5-38.  Printed Wiring Boards - PANEL Section - .....................   52
5-39.  Schematic Diagram - PANEL Section - ..........................   53
5-40.  Printed Wiring Board - DCDC Board - ..........................   54
5-41.  Schematic Diagram - DCDC Board - .............................   55
5-42.  Printed Wiring Board - USB Board - ..............................   56
5-43.  Schematic Diagram - USB Board - .................................   57

5-44.  Printed Wiring Board - HEADPHONE Board - .............   58
5-45.  Schematic Diagram - HEADPHONE Board - ................   58
5-46.  Printed Wiring Board - TEMP-SENSOR Board - ..........   58
5-47.  Schematic Diagram - TEMP-SENSOR Board - .............   58

6-1. Case 

Section 

....................................................................  82

6-2.  DIGITAL Board Section .................................................   83
6-3.  Front Panel Section .........................................................   84
6-4.  Back Panel Section .........................................................   85
6-5. Chassis 

Section 

...............................................................  86

  ..............................   87