Sony STRDG-520 Service manual

STR-DG520

SERVICE MANUAL

Ver. 1.0 2008.02

Photo: Black type

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;6,487,535 & other U.S. and worldwide patents issued & pending. DTS and DTS Digital Surround are registered trademarks and the DTS logos and Symbol are trademarks of DTS, Inc. © 1996-2007 DTS, Inc. All Rights Reserved.

This receiver incorporates High-Deﬁ nition Multimedia Interface

TM

(HDMI HDMI, the HDMI logo and High-Deﬁ nition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.

) technology.

US Model

Canadian Model

AEP Model

UK Model

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION: (Models of area code US only)

With 8 ohm loads, both channels driven, from 20 – 20,000 Hz; rated 90 watts per channel minimum RMS power, with no more than 0.09 % total harmonic distortion from 250 milliwatts to rated output.

Ampliﬁ er section

Models of area code US, CND Minimum RMS Output Power (8 ohms, 20 Hz – 20 kHz, THD 0.09%) 90 W + 90 W 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%) 130 W/ch Models of area code AEP, UK Minimum RMS Output Power (8 ohms, 20 Hz – 20 kHz, THD 0.09%) 85 W + 85 W Stereo Mode Output Power (8 ohms, 1 kHz, THD 1%) 100 W + 100 W Surround Mode Output Power 130 W/ch

1)

2)

(8 ohms, 1 kHz, THD 10%)

9-887-995-01

2008B04-1

2008.02

©

– Continued on next page –

MULTI CHANNEL AV RECEIVER

Sony Corporation

Audio Business Group Published by Sony Techno Create Corporation

STR-DG520

1) Measured under the following conditions: Area code Power requirements US, CND 120 V AC, 60 Hz AEP, UK 230 V AC, 50 Hz

2) Reference power output for front, center and surround speakers. Depending on the sound ﬁ eld settings and the source, there may be no sound output.

Frequency response Analog 10 Hz – 70 kHz +0.5/–2 dB (with sound ﬁ eld and tone bypassed) Inputs 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/10 kohms SUB WOOFER Voltage: 2 V/1 kohm Tone Gain levels ±6 dB, 1 dB step

3) INPUT SHORT (with sound ﬁ eld and tone bypassed).

4) Weighted network, input level.

FM tuner section

Tuning range 87.5 – 108.0 MHz Antenna FM wire antenna Antenna terminals 75 ohms, unbalanced Intermediate frequency 10.7 MHz

General

Power requirements Area code Power requirements US, CND 120 V AC, 60 Hz AEP, UK 230 V AC, 50/60 Hz

Power output (DIGTAL MEDIA PORT) DC OUT : 5 V, 0.7 A MAX

Power consumption Area code Power consumption US, AEP , UK 220 W CND 300 VA

Power consumption (during standby mode)

0.3 W Dimensions (w/h/d) (Approx.) 430 × 157.5 × 318 mm (16

7/8 × 6 2/8 × 12 5/8 inches) including

projecting parts and controls Mass (Approx.) 7.7 kg (16 lb 16 oz)

Supplied accessories Operating Instruction (1) Quick Setup Guide (1) FM wire antenna (aerial) (1) AM loop antenna (aerial) (1) Remote commander RM-AAU020 (1) R6 (size-AA) batteries (2) Optimizer microphone ECM-AC2 (1) (AEP, UK)

Design and speciﬁ cations are subject to change without notice.

• Abbreviation CND : Canadian model

AM tuner section

Tuning range Models of area code US, CND With 10-kHz tuning scale: 530 – 1,710 kHz With 9-kHz tuning scale: 531 – 1,710 kHz

5)

Models of area code AEP, UK With 9-kHz tuning scale: 531 – 1,602 kHz Antenna Loop antenna Intermediate frequency 450 kHz

5) You can change the AM tuning scale to 9 kHz or 10 kHz.After tuning in any AM station, turn off the receiver. While holding down TUNING MODE, press ?/1. All preset stations will be erased when you change the tuning scale.To reset the scale to 10 kHz (or 9 kHz), repeat the procedure.

Video section

Inputs/Outputs Video: 1 Vp-p/75 ohms COMPONENT VIDEO: Y : 1 Vp-p/75 ohms P

B/CB: 0.7 Vp-p/

75 ohms P

R/CR: 0.7 Vp-p/

75 ohms 80 MHz HD Pass Through

2

STR-DG520

SAFETY CHECK-OUT (US MODEL)

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)

To Exposed Metal Parts on Set

MODEL IDENTIFICATION –BACK PANEL–

Part No.

Model Part No.

US CND AEP, UK

• Abbreviation CND : Canadian model

3-279-308-0[] 3-279-308-1[] 3-279-308-2[]

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.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the leadfree 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)

AC

1.5 kΩ0.15 μF

Earth Ground

voltmeter (0.75 V)

Fig. A. Using an AC voltmeter to check AC leakage.

: 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 ﬂ ow)

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.

SAFETY-RELATED COMPONET 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

À 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 COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

3

STR-DG520

GENERAL

Name Function

Getting Started

L MEMORY/

ENTER TUNING

MODE TUNING +/–

M PHONES jack Connects to headphones

Press to operate the tuner (FM/AM) (page 46).

(page 58).

STR-DG520

This section is extracted from instruction manual.

?/1

SPEAKERS

(ON/OFF)

MEMORY/

TUNING

PHONES

ENTER

Name Function

A ?/1

(on/standby)

B SPEAKERS

(ON/OFF)

C Display The current status of the

D Remote

sensor

E DISPLAY Press to select infor mation

F INPUT MODE Press to select the input mode

Press to turn the receiver on or off (page 25, 29, 30, 45,

62). Press to turn the speaker

system on or off (page 14).

selected component or a list of selectable items appears here (page 7).

Receives signals from remote commander.

displayed on the display (page 53).

when the same components are connected to both digital and analog jacks (page 50).

2CH A.F.D. MOVIE MUSIC

MODE

Name Function

G MASTER

VOLUME

H MUTING Press to turn off the sound

I ANALOG

DIRECT

J INPUT

SELECTOR

K 2CH Press to select a sound field

A.F.D. MOVIE MUSIC

• AEP, UK model

Getting Started

Description and location of parts

Front panel

3165274

?/1

SPEAKERS (ON/OFF)

AUTO CAL MIC

PHONES

MEMORY/

TUNING

ENTER

2CH A.F.D. MOVIE MUSIC

MODE

DISPLAY INPUT MODE

MASTER VOLUME

INPUT SELECTOR

ANALOG DIRECT

Turn to adjust the volume level of all speakers at the same time (page 27, 28, 29,

30).

temporarily. Press MUTING again to restore the sound (page 28).

Press to listen to high quality analog sound (page 45).

Turn to select the input source to play back (page 28, 29, 30, 45, 46, 48, 49, 50, 52,

54).

(page 40).

continued

INPUT SELECTOR

ANALOG DIRECT

MASTER VOLUME

DISPLAY INPUT MODE

MUTING

89qd q;qs qa

US

5

6

Name Function

Getting Started

L MEMORY/

ENTER TUNING

MODE

Press to operate the tuner (FM/AM) (page 50).

TUNING +/–

M AUTO CAL

MIC jack

N PHONES jack Connects to headphones

MUTING

Connects to the supplied optimizer microphone for the Auto Calibration function (page 27).

(page 64).

Name Function

A ?/1

(on/standby)

B SPEAKERS

(ON/OFF)

C Display The current status of the

D Remote

sensor

E DISPLAY Press to select information

F INPUT MODE Press to select the input mode

Press to turn the receiver on or off (page 25, 32, 33, 49).

Press to turn the speaker system on or off (page 14).

selected component or a list of selectable items appears here (page 7).

Receives signals from remote commander.

displayed on the display (page 54, 58).

when the same components are connected to both digital and analog jacks (page 55).

89qf qd q;qs qa

Name Function

G MASTER

VOLUME

H MUTING Press to turn off the sound

I ANALOG

DIRECT

J INPUT

SELECTOR

K 2CH Press to select a sound field

A.F.D.

Turn to adjust the volume level of all speakers at the same time (page 30, 31, 32,

33).

temporarily. Press MUTING again to restore the sound (page 31).

Press to listen to high quality analog sound (page 49).

Turn to select the input source to play back (page 31, 32, 33, 49, 50, 52, 53, 55, 58,

59).

(page 44).

MOVIE MUSIC

continued

GB

5

GB

6

5

STR-DG520

21

About the indicators on the display

1 2 3 4 5 6 87

PLII;PL OPT DTS MEMORY ST

LFE

SW

LCR

SL S SR

Name Function

A SW Lights up when sub woofer

B LFE Lights up when the disc being

C ; D Lights up when the receiver is

D ; PL/

; PLII

;D;

selection is set to “YES” (page

37) and the audio signal is output from the SUB WOOFER jack.

played back contains an LFE (Low Frequency Effect) channel and the LFE channel signal is actually being reproduced.

decoding Dolby Dig ital signals.

Note

When playing a Dolby Digital format disc, be sure that you have made digital connections and that INPUT MODE is set to “AUTO” (page 50).

“; PL” lights up when th e receiver applies Pro Logic processing to 2 channel signals in order to output the center and surround channel signals. “; PLII” lights up when the Pro Logic II Movie/Music decoder is activated. However, these indicators do not light up if both the center and surround speakers are set to “NO” (page 33) and you select a sound field using the A.F.D. button.

Name Function

E OPT Lights up when BD input is

F DTS Lights up whe n the receiver is

G MEMORY Lights up when a memory

H Tuner

indicators

I Preset

station indicators

J D.RANGE Lights up when dynamic range

selected. However, “UNLOCK” appears on the display if no digital signal is input through the OPTICAL jack. “OPT” also lights up when SAT input is selected if INPUT MODE is set to “AUTO” and the source signal is a digital signal being input through the OPTICAL jack.

decoding DTS signals.

Note

When playing a DTS format disc, be sure that you have made digital connections and that INPUT MODE is set to “AUTO” (page 50).

function, such as Preset Memory (page 48), etc., is activated.

Lights up when using the receiver to tune in radio stations (page 46), etc.

Lights up when using the receiver to tune in radio stations you have preset. For details on presetting radio stations, see page 47.

compression is activated (page

32).

Name Function

Getting Started

MONOD.RANGECOAXHDMI

9q;qaqsqd

K COAX Lights up when DVD input is

L HDMI Lights up when the receiver

M Playback

channel indicators

L R C SL SR S

selected. However, “UNLOCK” appears on the display if no digital signal is input through the COAXIAL jack.

recognizes a component connected via a HDMI IN jack (page 17).

The letters (L, C, R, etc.) indicate the channels being played back. The boxes around the letters vary to show how the receiver downmixes the so urce sound (based on the speaker settings). Front Left Front Right Center (monaural) Surround Left Surround Right Surround (monaural or the surround components obtained by Pro Logic processing)

Example:

Recording format (Front/ Surround): 3/2.1 Output channel: When surround speakers are set to “NO” (page 33) Sound Field: A.F.D. AUTO

SW

LCR

SL SR

Rear panel

AM

ANTENNA

IN

L

R

TV

SA-CD/CD

OPTICAL IN jacks

COAXIAL IN jack

HDMI IN/ OUT jacks*

COMPONENT VIDEO INPUT/ OUTPUT jacks*

DVD IN BD IN OUT

VIDEO

IN

OUT

IN

DVD

AUDIO

OUT

IN

SAT VIDEO

HDMI

VIDEO

IN

OUT

MONITOR

AUDIO

IN

OUT

SUB WOOFER

47 6 5

Connects to a DVD player, etc. The COAXIAL jack provides a better sound quality (page 17, 20, 22).

Connects to a DVD player or a Blu-ray disc player. The image and the sound are output to a TV (page 17).

Connects to a DVD player, TV, or a satellite tuner. You can enjoy high quality image (page 19, 20, 22).

DIGITAL

OPTICAL

BD IN

SAT

IN

DVD

IN

COAXIAL

DMPORT

DC5V

0.7A MAX

A DIGITAL INPUT/OUTPUT section

B COMPONENT VIDEO INPUT/

OUTPUT section

Green (Y)

Blue (P

B/CB)

Red (P

R/CR)

SAT IN

DVD IN MONITOR OUT

Y

P

B/CB

PR/C

R

COMPONENT VIDEO

SURROUND CENTER

LR

SPEAKERS

3

C SPEAKERS section

D VIDEO/AUDIO INPUT/OUTPUT

section

White (L)

Red (R)

Yellow

E AUDIO INPUT section

White (L)

Red (R)

Black

FRONT

L

R

AUDIO IN/ OUT jacks

VIDEO IN/ OUT jacks*

AUDIO IN jacks

AUDIO OUT jack

continued

Connects to speakers (page 14).

Connects to video and audio jacks of a VCR, a DVD player, etc. (page 19–23).

Connects to a Super Audio CD player, CD player, etc. (page 15).

Connects to a sub woofer (page 14).

continued

US

7

Getting Started

US

9

US

8

F ANTENNA section

FM ANTENNA jack

AM ANTENNA terminals

Connects to the FM wire antenna (aerial) supplie d with this receiver (page 24).

Connects to the AM loop antenna (aerial) supplie d with this receiver (page 24).

G DMPORT

DMPORT jack

* You can watch the selected input image when you

connect the HDMI OUT or MONITOR OUT jack to a TV or projector (page 17, 19).

Connects to a DIGITAL MEDIA PORT adapter (page 51).

Remote commander

You can use the supplied remote to operate the receiver and to control the Sony audio/video components that the remote is assigned to operate (page 54).

RM-AAU020

wa

w;

ql qk qj

qh

qg qf

qd

TV INPUT

TV

?/1

AV

?/1

SLEEP DMPORT

SYSTEM STANDBY

VIDEO BD DVD SAT

TV TUNER

SA-CD/CD

2CH A.F.D.

MOVIE MUSIC

123 46

5

9

78

>10/

MEMORY AMP MENU

0/10

ENTER

-

CLEAR

TOOLS/ OPTIONS

MENU/HOME

RETURN/EXIT TV CH –

REPLAY ADVANCE

PRESET –

.

TUNING –

<

HMm

TV

X

?/1

DVD/BD

MENU

D.SKIP

D.TUNING

GNITUMYALPSID

TV VOL

MASTER VOL

TV CH +

PRESET +

>

TUNING +

FM MODE

x

1

2

3

4

5 6 7

8 9 q;

qa

qs

US

10

6

STR-DG520

Name Function

A TV ?/1

(on/standby)

AV ?/1 (on/standby)

B ?/1

(on/standby)

C Input buttons Press one of the buttons to

D 2CH Press to select a sound field.

A.F.D. MOVIE MUSIC

E DVD/BD

MENU

D.SKIP Press to skip a disc when

F

G D.TUNING Press to e n t er direct tuning

Press TV ?/1 and TV (M) at the same time to turn the TV on or off.

Press to turn on or off the Sony audio/video components that the remote is assigned to operate (page 54). If you press ?/1 (B) at the same time, it will turn off the receiver and other components (SYSTEM STANDBY).

Note

The function of the AV ?/1 switch changes automatically each time you press the input buttons (C).

Press to turn the receiver on or off. To turn off all components, press ?/1 and AV ?/1 (A) at the same time (SYSTEM STANDBY).

select the component you want to use. When you press any of the input buttons, the receiver turns on. The buttons are factory assigned to control Sony components. You can change the button assignments following the steps in “Changing button assignments” on page 54.

Press to display the menu of the DVD or Blu-ray disc on the TV screen. Then, use V,v, B, b and (P) to perform menu operations.

using a multi-disc changer.

mode.

Name Function

H AMP MENU Press to display the menu of

I MEMORY Press to store a station.

ENTER Press to enter the value after

J MUTING Press to turn off the sound

K TV VOL

a)

+

MASTER VOL +

L ./>

REPLAY / ADVANCE

m/M

H

X

/–

a)

/–

b)

<

b)

a)b)

b)

the receiver. Then, use V, v, B, b and (P) to perform

menu operations.

selecting a channel, dis c or track using the numeric buttons of the TV, VCR or satellite tuner.

temporarily. Press MUTING again to restore the sound. Press MUTING and TV (M) at the same time to activate the TV’s muting function.

Press TV VOL +/– and TV (M) at the same time to adjust the TV volume level.

Press to adjust the volume level of all speakers at the same time.

Press to skip a track of the CD player, DVD player or Bluray disc player.

Press to replay the previous

<

scene or fast forward the current scene of the VCR, DVD player or Blu-ray disc player.

Press to – search tracks in the forward/

reverse direction of the DVD player.

– start fast forward/rewin d of

the VCR, CD player or Bluray disc player.

Press to start playback of the VCR, CD player, DVD player or Blu-ray disc player.

Press to pause playback or recording of the VCR, CD player, DVD player or Bluray disc player. (Also starts recording with components in recording standby.)

Getting Started

Name Function

b)

x

FM MODE Press to select the FM

TV CH +/– Press TV CH +/– and TV (M)

PRESET +/– Press to select

Press to stop playback of the VCR, CD player, DVD pla yer or Blu-ray disc player.

monaural or stereo reception.

at the same time to select preset TV channels.

– preset stations. – prese t channels of the VCR

or satellite tuner.

TUNING +/– Press to scan a station.

M TV Press TV and the button you

N MENU/HOME Press to display the menu of

O RETURN/

EXIT O

want at the same time to activate the buttons with orange printing.

the VCR, DVD player, satellite tuner or Blu-ray disc player on the TV screen. Press MENU/HOME and TV (M) at the same tim e to display the TV’s menu. Then, use V, v, B, b and (P) to perform menu operations.

Press to – return to the previous menu. – exit the menu while the

menu or on-screen guide of the VCR, DVD player, satellite tuner or Blu-ray disc player is displayed on t he

TV screen. Press RETURN/EXIT O and TV (M) at the same time to return to the previous menu or exit the TV’s menu while the menu is displayed on the TV screen.

Name Function

P



V/v/B/b

Q DISPLAY Press to select information

R TOOLS/

OPTIONS

S -/-- Press to select the channel

>10/

CLEAR Press to clear a mistake when

After pressing DVD/BD

,

MENU (E), AMP MENU (H) or MENU/HOME (N), press V,v, B or b to select the settings. Then, p ress to enter the selection if you have pressed DVD/BD MENU or MENU/HOME previously. Press also to enter the selection of the receiver, VCR, satellite tuner, CD player, DVD player or Bluray disc player.

displayed on the TV scree n of the VCR, satellite tuner, CD player, DVD player or Bluray disc player. Press DISPLAY and TV (M) at the same time to di s p lay TV’s information on the TV screen.

Press to display and select the options of the DVD player or Blu-ray disc player. Press TOOLS/OPTIONS and TV (M) at the same time to display options applicable to the Sony TV.

entry mode, either one or two digit of the VCR. Press -/-- and TV (M) at the same time to selec t the channel entry mode, either one or two digits of the TV.

x

Press to select – track numbers over 10 of the

– channel numbers of the

you press the incorrect numeric button.

VCR, satellite tuner or CD player.

Digital CATV terminal.

Name Function

T Numeric

buttons (number 5

U TV INPUT Press TV INPUT and TV (M)

SLEEP Press to activate the Sleep

a)

The number 5, MASTER VOL +, TV VOL +, and H buttons have tactile dots. Use the tactile dots as references when operating the receiver.

b)

This button is also available for DIGITAL MEDIA PORT adapter operation. For details on the function of the but ton, see the opera t ing instructions supplied with the DIGITAL MEDIA PORT adapter.

Notes

•Some functions explained in this section may not work depending on the model.

• The above explanation is intended to serve as an example only. Therefore, depending on the component, the above operation may not be possible or may operate differently than described.

Press to – preset/tune to preset

a)

)

stations.

– select track numbers of the

CD player, DVD player or Blu-ray disc player. Press 0/ 10 to select track number 10.

– select channel numbers of

the VCR or satellite tuner. Press the numeric buttons and TV (M) at the same time to select the TV channels.

at the same time to select the input signal (TV input or video input).

Timer function and the duration which the receiver turns off automatically.

continued

US

11

US

12

Getting Started

US

13

7

STR-DG520

SECTION 2

DISASSEMBLY

Note: This set can be disassemble according to the following sequence.

SET

2-1. CASE (Page 8)

2-2. BACK PANEL SECTION (Page 9)

2-3. FRONT PANEL SECTION (Page 9)

Note:

Follow the disassembly procedure in the numerical order given.

2-1. CASE

 two screws (+BVST 4 × 8) (black) two screws (+BVTT 4 × 8) (silver)

2-4. DIGITAL BOARD (Page 10)

2-5. MAIN BOARD SECTION (Page 10)

2-6. STANDBY BOARD (Page 11)

 two screws (+BVTP 3 × 8)

 case

 two screws

(+BVST 4 × 8) (black) two screws (+BVTT 4 × 8) (silver)

8

2-2. BACK PANEL SECTION

STR-DG520

 back panel section

 six screws

(+BVTP 3 × 8)

 CNP901 (2P)

2-3. FRONT PANEL SECTION

 CNP203 (4P)

 five screws

(+BVTP 3 × 8)

 three screws (+BVTP 3 × 8)

 three screws (+BVTP 3 × 8)

 wire (flat type) (9 core) (CNS510)

 wire (flat type) (7 core) (CNS509)

 wire (flat type) (9 core) (CNS507) (US, CND) wire (flat type) (11 core) (CNS508) (AEP, UK)

 CNP790 (4P)

 CNP910 (3P)

 clip

 wire (flat type) (17 core)

(CNS513)

 five screws (+BVTP 3 × 8)

 front panel section

9

STR-DG520

2-4. DIGITAL BOARD

 CNP505 (9P)

 CNP512 (3P)

 CNP503 (6P)

2-5. MAIN BOARD SECTION

 DIGITAL board

 screw

(+BVTP 3 × 8)

CNP411

CNP410

 screw (+BV3 (3-CR))

 two screws (+BV3 (3-CR))

 CNP912 (6P)

 CNP940 (6P)

 CNP921 (3P)

 CNP930 (3P)

 two screws

(+BV3 (3-CR))

 MAIN board section

10

2-6. STANDBY BOARD

 screw (+BVTP 3 × 8)

STR-DG520

 STANDBY board

 CNP902 (2P)

CN4001

11

STR-DG520

SECTION 3

TEST MODE

AM CHANNEL STEP 9 kHz/10 kHz SELECTION MODE (US, Canadian model only)

* Either the 9 kHz step or 10 kHz step can be selected for the AM

channel step.

* Procedure:

Turn the [INPUT SELECTOR] control to set AM and press the [

] button to turn off the main power.

?/1

While depressing the [TUNING MODE] button, press the [

?/1

button to turn on the main power. Either the message “9k STEP” or “10k STEP” appears for a moment and select the desired step.

VACUUM FLUORESCENT DISPLAY TEST MODE

* All ﬂ uorescent segments are tested.

When this test is activated, all segments light on at the same time, then each segment lights on one after another.

* Procedure:

While depressing the [TUNING MODE] and the [DISPLAY] buttons simultaneously, press the [

] button to turn on the

?/1

main power.

1. ALL segments light on.

SW

LFE

L

CR

SL S SR

SBL SB SBR

DDD

DEX DTS-ESxIIPL RDS STCAT96/24

SP B

D

HDMI

D

PL OPT

MEMORY

NEO:6COAX

SAT

D.RANGE

dB

Hzk

ft.m

MHz

MONO

SPA

D

2. Turn the [INPUT SELECTOR] control, conﬁ rm display.

LFE

L R

S

SP B

x RDS

NEO:6COAX

D.RANGE

k m MHz

MONO

3. Turn the [INPUT SELECTOR] control, conﬁ rm display.

SW

C

SL SR

SBL SB SBR

D

D DTS STCAT

D

PL

MEMORY

dB

Hz

ft.

KEY CHECK MODE

* Button check * Procedure:

While depressing the [SPEAKERS (ON/OFF)] and the [2CH] buttons simultaneously, press the [

] button to turn on the

?/1

main power. Either the message “REST 13” appears.

]

Every pressing of any button other than the [

?/1

the buttons. The buttons which are already counted once are not counted again. When all buttons are pressed “REST 00” appears.

SWAP ALL MODE

* The signal will be swap to all channel so that all speaker will

have sound output.

* Procedure:

1. While depressing the [SPEAKERS (ON/OFF)] and the [A.F.D.] buttons simultaneously, press the power [ to turn on the main power.

2. “SWAP” appears. (No change while displayed.)

SHIPMENT MODE

All preset contents are reset to the default setting. * Procedure:

1. While depressing the [SPEAKERS (ON/OFF)] and the [MUSIC] buttons simultaneously, press the power [

?/1

turn on the main power.

2. “CLEARED” appears and switch off the set.

RE-BOX CLASSIFICATION TEST MODE

* Procedure:

1. While pressing the [MEMORY/ENTER] and the [INPUT MODE] buttons simultaneously, press the power [ to turn on the main power.

2. “R.BOX[][][]xxx” appears.

3. xx indicates number of times set powered on.

4. Press any button or power off the set to release test mode.

] counts down

] button

?/1

] button to

] button

?/1

4. Turn the [INPUT SELECTOR] control, all segments light off.

SOUND FIELD CLEAR MODE

* The preset sound ﬁ eld is cleared when this mode is activated.

Use this mode before returning the product to clients upon completion of repair.

* Procedure:

While depressing the [2CH] button, press the [

] button to turn

?/1

on the main power. The message “S.F . CLR.” appears for a moment and initialization is performed.

SOFTWARE VERSION DISPLAY MODE

* The software version is displayed. * Procedure:

While depressing the [SPEAKERS (ON/OFF)] and the [DISPLAY] buttons simultaneously, press the [

] button to turn on

?/1

the main power. The model name, destination and the software version are displayed for a moment.

12

STR-DG520

SECTION 4

FM TUNER CHECK

DCAC FACTORY TEST MODE (AEP, UK model only)

DCAC Factory Test mode have two stages:

1. DCAC DSP Data Line Checking

2. DCAC board Checking

Start Pass Pass

DSP Data Line

Check

Factory Test System Setup

Receiver

DCAC MIC

SPK Front Left

1. When power off: Press the three buttons [MEMORY/ENTER] + [MOVIE] +

[

] .

?/1

“DCAC[]FTM” appears. Afterward, press the [TUNING MODE] to start DCAC factory

test mode.

1. DCAC DSP Data Line Checking

After press the [TUNING MODE], DCAC Factory test mode will start, below display will show: “DCAC

[][][]x” x=1, 2, 3

If there is error happen, below display will show:

Auto Cal Mic

Check

END

FM AUTO STOP CHECK

generator

set

OUT (75 Ω)

Procedure:

1. Turn on the set.

2. Input the following signal from Signal Generator to FM antenna input directly.

* Carrier Frequency: A=87.5 MHz, B=98 MHz, C=108 MHz Deviation : 75 kHz Modulation : 1 kHz ANT input : 35 dBu (EMF)

Note:

Please use 75 ohm “coaxial cable” to connect SG and the set. You cannot use video cable for checking. Please use SG whose output impedance is 75 ohm.

3. Set to FM tuner function and scan the input FM signal with automatic scanning.

4. Conﬁ rm that input Frequency of A, B and C are detected and automatic scanning stops.

The stop of automatic scanning means “The station signal is received in good condition.”

[]SD0x” x=1 t D1501 or R1530 problem

“ERR x=2 t D1503 problem x=3 t D1504 problem

2. DCAC board Checking

Connect front left speaker of the receiver and AUTO CAL microphone. Turn [MASTER VOLUME] jog, there will be test tone sound output from front left speaker, and the display will change accordingly.

“AD[]-[]xxx” xxx=0 to 255 (depends on loudness of test tone)

13

STR-DG520

• Circuit Boards Location

SECTION 5

DIAGRAMS

POWER board

DCAC board (AEP, UK model only)

HEADPHONE board

STANDBY board

DISPLAY board

DCDC CONVERTER board

VIDEO board

HDMI SW board

DIGITAL board

MAIN board

14

STR-DG520

1515

C-CH

SR-CH

R-CH

SL-CH

L-CH

FR-IN

FL-IN

R-CH

SW SEL

C

SEL

SL

SEL

R-CH

DIR

FUNCTION SELECT

IC400

VCCVEE

+7V

SEL SW

MCU

I/F

-7V

SW OUT

C OUT

SL OUT

FL OUT

• Signal path : TUNER (FM/AM) : VIDEO (AUDIO) : CD (ANALOG)

• R-ch is omitted due to same as L-ch.

43 92

89

AUDIO IN

LR

VIDEO

TV

AM

TN1

FM/AM TUNER UNIT

SYSTEM

CONTROL

IC1101 (1/6)

SA-CD/CD

LRLR

J404 (1/2)

J402

R-CH

SLATCH

AEP,UK MODEL

91

TUNER_DATA

90

TUNER_CLK

VOL_IC_DATA

VOL_IC_CLK

TUNER SD

DO/SD/ST

L-CH

R-CH

SD CE

DO

DI

CL

TU+9V

24

DMPORT AMP

IC3002

25

DMPORT_DET

26

FM 75Ω

COAXIAL

ANTENNA

-1 -2 -3 -4 -5 -6-3 -4

52

RDS_CLK

RDS INT

53

RDS_DATA

RDS DATA

63

AUDIO OUT

LR

J404 (2/2)

VIDEO

-1 -2

IN IN

SAT

LR

AUDIO IN

12 8

10 11

75

14

13

18

17

SW-CH

16

71 70 68 72

48 47 52 51 39 38 44 43

15

76

27 28

L

SEL

DMPORT_RX DMPORT_TX

J1302

DC5V

0.7A MAX

DMPORT

5 6

DET

7

L+

13

L–

11

DBUS+5V

2

3 2

1

R+

14

R–

12

5 6

7

+5.8V

4

2

61

+5V REG

IC1906

VIDEO+5V

4

DIGITAL

SECTION

B

DIGITAL

SECTION

A

DISPLAY SECTION

D

POWER

SECTION

C

5-1. BLOCK DIAGRAM – TUNER/AUDIO Section –

(Page 19)

(Page 16)

(Page 20)

(Page 16)

STR-DG520

1616

5-2. BLOCK DIAGRAM – DIGITAL Section –

• Signal path : TUNER (FM/AM) : VIDEO (AUDIO) : DVD (DIGITAL)

• R-ch is omitted due to same as L-ch.

DSPIB

AEP,UK MODEL

DPSOA_DAI_P6 DPSOC_DAI_P8 DPSOB_DAI_P7

DOUT

9

79

DSPIA

78

NONAUDIO

AUDIO

24

XMCK

20

CKOUT

13

97

DPFSCK

94

BCK IN

BCK

14 89

LRCK IN

LRCK

15 88

DATAO

64 70 65

X1302

25MHz

X1301

12.288MHz

CLKIN

142

XTAL

143

BCK OUT

87

LRCK OUT

86

99 20 188 19

FLAG1

ERROR

21

22

SCKI6BCK8LRCK

7

95 96 97 98

38 37 36 35 47 17

INPUT

DATA

DEMODULATOR

Pa,Pb DETECTION LOCK

DETECTION

MICROPROCESSOR

I/F

C bit DETECTION

34 16

16

DVD

IN

DIGITAL

(COAXIAL)

1

BD IN

(OPTICAL)

OUT

OPTICAL

RECEIVER

IC1352

IC1303

DIGITAL AUDIO

I/F RECEIVER

IC1301

J1301

23

WAVE

SHAPER

IC1903

13

+3.3V

REG

IC1905

13

+3.3V

REG

IC1002

13

+1.2V

REG

SWITCH

IC1014

51

+1.2V

VDDI

+3.3V-2

VDDE

+3.3V

DIR

VDD

FL-IN

+3.3V

+3.3V-2

+1.2V

+5.8V

DIGITAL DECIM.

FILTER

ADC

IC1401

DSP EX3

IC1501

ERROR

1

DATAO

DSP SPIDS

DSP SPICLK

DSP INT

MISO

MOSI

CLK

CE

DI

DO

XSTATE

CLKCEDI

DO

CKSEL1

93100

48

XMODE

94

CKSEL1

XMODE

XSTATE

5

3

XOUT

DIN2

DIN0

1

SAT

IN

(OPTICAL)

OUT

OPTICAL

RECEIVER

IC1351

4

DIN1

XIN

D1301

D1501

SYSTEM

CONTROL

IC1101 (2/6)

TUNER/

AUDIO

SECTION

B

TUNER/

AUDIO

SECTION

A

$3

MOD.

XRST

1114

1215

MUTE

57

DCAC_INT

MDI

MC

ML

MUTE

ML

12

13

MC

13

14

MD

DIN3

FL OUT

R-CH

VO3L

VO3R

VO1L

VO1R

VO2L

VO2R

9

26

25

8

7

2

MCK

3

BCK LRCK

4

6CH DAC

IC1452

DAC

DIN1

SL OUT

R-CH

22

21

DAC

DIN2

C OUT

23

SW OUT

24

DAC

1

VIN L

FR-IN

2

VIN R

D1503

D1504

CK Q

DAC

125 126121 127 15122

SPIDS

RESET

SPICLK

FLAG0

MISO

MOSI

4721

(Page 15)

STR-DG520

1717

5-3. BLOCK DIAGRAM – VIDEO Section –

1

CH1 IN1

CH2 IN1

CH3 IN1

CH1 IN2

CH2 IN2

CH3 IN2

CHI OUT

CH2 OUT

CH3 OUT

3

8

10

17 15

2 4

Y

P

B/CB

PR/CR

Y

SW1 SW2

COMPONENT

SW1

COMPONENT SW2

P

B/CB

PR/CR

J220 (1/2)

J210 (1/2)

24

75Ω

DRIVER

6dB AMP

22

75Ω

DRIVER

6dB AMP

20

75Ω

DRIVER

6dB AMP

23

PS

PS(V-MUTE)

6 14 4

13

J211 (1/2)

5

3

DVD

IN

SAT

IN

VIDEO

IN

VIDEO

IN

COMPONENT

VIDEO

-4

-5

-6

-1

-2

-3

Y

P

R/CR

PB/CB

J220 (2/2)

MONITOR

OUT

COMPONENT

VIDEO

-7

1

75Ω

DRIVER

6dB AMP

15

3 1

75Ω

DRIVER

6dB AMP

-2

J210 (2/2)

J211 (2/2)

-8

-9

-1

VIDEO

SAT

DVD

-1

VIDEO

IN

-2

VIDEO

OUT

VIDEO

-3

VIDEO

OUT

MONITOR

+5V

REG

IC201

+5V-3

3 2

-5V

REG

IC202

-5V-3

COMP_S1 COMP_S2

V_SW2 V_SW3

V_MUTE V_SW1

COMPONENT SW1 COMPONENT SW2

COMPOSITE SW2 COMPOSITE SW3

COMPOSITE SW4

PS(V-MUTE) COMPOSITE SW1

SYSTEM CONTROL

IC1101 (3/6)

-5V

-5V-3

+5V

+5V-3

+15V

-15V

VOUT1

VOUT2

V-1,-2

-5V-3

V+1,+2

+5V-3

VIN1

VIN4

VIN5

COMPOSITE SW4

COMPOSITE

SW1

COMPOSITE SW2

COMPOSITE SW3

SW4

D211 D210

SW1

2

SW5

10

SW2

SW3

INPUT SELECT

IC210

COMPONENT VIDEO SELECT

IC220

4 3 2 5 6 7

V_SW4

9

• Signal path : VIDEO

STR-DG520

1818

5-4. BLOCK DIAGRAM – HDMI SW Section –

HDMI_CTRL

HDMI_DET HDMI_OEB

HDMI_SI

SYSTEM CONTROL

IC1101 (4/6)

87 88 86 34

77

A24

DATA2+ DATA2– DATA1+ DATA1– DATA0+ DATA0– CLOCK+ CLOCK– SCL (5V) SDA (5V) HOT PLUG DET CEC +5V POWER

CN5001

DVD IN

4 6

1 3

7

9 10 12 15 16 19 13 18

B24 A23

B23 A22 B22 A21 B21 SCL2

76 74 73 71 70 68 67 64

15

A14 B14 A13

B13 A12 B12 A11 B11

OEB

S1

14 12 11

9 8 6 5

SCL1 SDA1

3 2

HPD1

80

25

Y4 Z4 Y3

Z3 Y2 Z2 Y1 Z1

26 28 29 31 32 34 35

SCL SINK SDA SINK

38 39

HPD SINK

40

SDA2 HPD2

63 62

CN5002

4

6

1

3

7

9 10 12 15 16 19 13 18

CN5003

4

6

1

3

7

9 10 12 15 16 19 13 18

1

LEVEL SHIFT

IC5004

HDMI RECEIVER/TRANSCEIVER

IC5001

ANALOG SWITCH

IC5005

5

4 5

3

7

1

6

3

4

42 21

1

POWER

CONTROL

4 2

1

+5.8V

REG

3 1

+3.3V

REG

IC5003

IC5006

HDMI+3.3V

+7V (VCC)

IC5002

OUT

BD IN

HDMI

STR-DG520

1919

5-5. BLOCK DIAGRAM – KEY/DISPLAY Section –

83

FL DISPLAY DRIVER

IC100

14

I

29

•

31

82

29

30

5

6

65 64

54

SW NETWORK

S101-107,124

RV102

MASTER VOLUME

56

51 49

28 27

77

+3.3V

(STBY)

X1

X0

SDA

38

DCAC_IN

AEP,UK MODEL

SCL

POWER_KEY

FLASH1/DMPORT_TX FLASH2/DMPORT_RX MD2 MD0

RSTX

SDA

SCL

EEPROM

IC1131

X1101

24MHz

SIRCS

F1 F2

75

FL_DATA

7

DIN

76

FL_LAT

9

STB

74

FL_CLK

8

CLK

GRID1

I

GRID11

SEG1

I

SEG17

VOL_ENCODER(A) VOL_ENCODER(B)

ENC_A

DMPORT_RX

DMPORT_TX

ENC_B

A/D2

SW NETWORK

S108-111,120

A/D1

2 3

31 32

RV101 INPUT

SELECTOR

2 3

2

REMOTE

CONTROL

SIGNAL

RECEIVER

IC103

OUT

SIRCS

SYSTEM

CONTROL

IC1101 (5/6)

BUFFER

IC101

CNS504

S153

@

FLASH2 MD2 MD0

RESET

5 6

FLASH1

8 9 3

FLASH

PROGRAMMING

12

39

40

FL101

VACUUM

FLUORESCENT

DISPLAY

IC1111

RESET

42

I

32

9

4

2

8

6

3

15

MIC AMP

IC2000

DETECT

D2013,2014

AUTO CAL MIC

J2000

TUNER/AUDIO

SECTION

D

(Page 15)

STR-DG520

2020

5-6. BLOCK DIAGRAM – POWER Section –

6

2 3

DRIVE

POWER AMP

Q701-704

CURRENT

DETECT

Q711,712

RY350

PRE DRIVER

IC701

IN 1

+VOUT1

-VOUT1

R

L

AUDIO

OUT

SUB

WOOFER

CENTER

SURROUND

R

R-CH

L-CH

R-CH

SL-CH

C-CH

R-CH

SR-CH R-CH

TUNER/

AUDIO

SECTION

C

RY901

D920

F1 F2

-20V

+3.3V

(STBY)

+7V

(VCC)

+5V

-7V

+7V

TU+9V

-20V

RECT

D950-953

D990 D991

D1001

D1108

D1107

OVERLOAD

DETECT

D720,Q720

8

61

12 11

DRIVE

POWER AMP

Q651-654

CURRENT

DETECT

Q661,662

-20V REG Q930

B-SWITCH

Q500,501

RELAY

DRIVER

Q901

AC IN

DETECT

Q990

PRE DRIVER

IC601

IN 2

+VOUT2

-VOUT2

OVERLOAD

DETECT

D670,Q670

6

2 3

DRIVE

POWER AMP

Q801-804

CURRENT

DETECT

Q811,812

PRE DRIVER

IC801

IN 1

+VOUT1

-VOUT1

OVERLOAD

DETECT

D820,Q820

RY355

RY301

70

PROTECTOR D320,325-327 Q320,321,325

58

48

D1111

+9V

(STBY)

OVERLOAD

DETECT AMP

72

IC565

–55V

-B

+A5V

+5V REG

13

IC1001

+5.8V

REG

12

IC4100

+3.3V

REG

13

IC1904

+9V

REG

13

IC1902

-15V

+15V

+7V

REG

13

IC350

-7V

REG

23

IC352

+5V

REG

13

IC1031

+B

R-CH

R-CH R-CH

RECT

D921

RECT

D910-913

RECT D4001

RECT

D940-943

T901

POWER

TRANSFORMER

(MAIN)

TB604

TB601

TB607

J405

FRONT

RY375

PHONES

J790

R-CH

RELAY

DRIVER

Q375

FRONT RY

HP RY

C/SUR RY

SW_PREOUT_RY

HP DET

FRONT_A_RY

PROTECTOR

HP_DETECT

FUSE_DETECT

STOP

63

55

HP_RY

62

POWER_RY

69

PRE_OUT_SW_RY

66

C/SW/REAR/SB_RY

FRONT RY

HP DETECT

HP RY

SW_PREOUT_RY

C/SUR RY

SYSTEM

CONTROL

IC1101 (6/6)

PRE

DRIVE

PRE

DRIVE

SW-CH

-55V +B

PRE

DRIVE

R910

F4001

F901

F4002

R911 R940

T902

POWER

TRANSFORMER

(SUB)

SPEAKERS

IMPEDANCE

USE 8-16Ω

RELAY

DRIVER

Q355

RELAY

DRIVER

Q301

RELAY

DRIVER

Q350

AC IN ~

• Signal path : TUNER (FM/AM)

• R-ch is omitted due to same as L-ch.

(Page 15)

Sony STRDG-520 Service manual

TABLE OF CONTENTS

GENERAL

DISASSEMBLY

 case

 back panel section

 front panel section

 DIGITAL board

 MAIN board section

 STANDBY board

TEST MODE

FM TUNER CHECK

DIAGRAMS