Sony STR-DH550, STR-DH570 Service manual

STR-DH550/DH750

SERVICE MANUAL

Ver. 1.2 2015.04

Photo: STR-DH750

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

Laboratories. Dolby, Pro Logic, Surround EX, and the double-D symbol are trademarks of Dolby Laboratories.

** For DTS patents, see http://patents.dts.com.

Manufactured under license from DTS Licensing Limited. DTS, DTS-HD, the Symbol, & DTS and the Symbol together are registered trademarks, and DTS-HD Master Audio is a trademark of DTS, Inc. © DTS, Inc. All Rights Reserved.

This receiver incorporates High-Deﬁnition Multimedia Interface (HDMI™) technology. The terms HDMI and HDMI High-Deﬁnition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.

iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.

All other trademarks and registered trademarks are of their respective holders. In this manual, ™ and ® marks are not speciﬁed.

“Made for iPod” and “Made for iPhone” mean that an electronic accessory has been designed to connect speciﬁcally to iPod or iPhone, respectively, and has been certiﬁed 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.

Windows Media is either a registered trademark or trademark 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 license from Microsoft or an 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 Com-

puter Entertainment Inc.

“WALKMAN” and “WALKMAN” logo are registered trademarks of Sony Corporation.

MICROVAULT is a trademark of Sony Corporation. MHL, Mobile High-Deﬁnition Link and the MHL

Logo are trademarks or registered trademarks of MHL Licensing, LLC.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Sony Corporation is under license. Other trademarks and trade names are those of their respective owners.

The N Mark is a trademark or registered trademark of NFC Forum, Inc. in the United States and in other countries.

Android™ is a trademark of Google Inc. Google Play™ is a trademark of Google Inc.

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION: (USA model only)

With 6 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.

Ampliﬁer section

Mexico model Minimum RMS Output Power (6 ohms, 20 Hz – 20 kHz, THD 0.09%) 90 W + 90 W Stereo Mode Output Power (6 ohms, 1 kHz, THD 1%) 100 W + 100 W Surround Mode Output Power (6 ohms, 1 kHz, THD 0.9%) 140 W per channel India model Minimum RMS Output Power (6 ohms, 20 Hz – 20 kHz, THD 0.09%)

80 W + 80 W Stereo Mode Output Power (6 ohms, 1 kHz, THD 1%)

90 W + 90 W Surround Mode Output Power (6 ohms, 1 kHz, THD 0.9%)

115 W per channel Other models Minimum RMS Output Power (6 ohms, 20 Hz – 20 kHz, THD 0.09%)

90 W + 90 W Stereo Mode Output Power (6 ohms, 1 kHz, THD 1%)

105 W + 105 W Surround Mode Output Power (6 ohms, 1 kHz, THD 0.9%)

145 W per channel

1)

Measured under the following conditions:

Area Power requirements

US, CND, TW

MX 127 V AC, 60 Hz AUS, AEP,

UK BR 220 V AC, 60 Hz E12 240 V AC, 50 Hz

1)

1) 2)

1)

1) 2)

1)

1) 2)

120 V AC, 60 Hz

230 V AC, 50 Hz

US Model

Canadian Model

AEP Model

UK Model

Australian Model

STR-DH550/DH750

E Model

STR-DH550

Brazillian Model

Mexican Model

Taiwan Model

STR-DH750

2)

Reference power output for front, center, surround,

surround back and front high speakers. Depending on the sound ﬁ eld settings and the source, there

may be no sound output. Frequency response Analog 10 Hz – 100 kHz, +0.5/–2 dB (with sound ﬁ eld and equalizer bypassed) Input Analog Sensitivity: 500 mV/50 kilohms S/N 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) SUBWOOFER Voltage: 2 V/1 kilohm Equalizer Gain levels ±10 dB, 1 dB step

3)

4)

FM tuner section

Tuning range

87.5 MHz – 108.0 MHz Antenna (aerial) FM wire antenna (aerial) Antenna (aerial) terminals 75 ohms, unbalanced

AM tuner section

Tuning range

Area Tuning scale

US, CND, MX, BR

AUS, AEP, UK, TW, E12

Antenna (aerial) Loop antenna (aerial)

Video section

Inputs/Outputs Video: 1 Vp-p, 75 ohms

3)

: 105 dB (A, 500 mV4))

INPUT SHORT (with sound ﬁ eld and equalizer

bypassed).

Weighted network, input level.

10 kHz step 9 kHz step 530 kHz – 531 kHz –

1,710 kHz 1,710 kHz – 531 kHz –

1,602 kHz

– Continued on next page –

9-890-636-03

2015D80-1

2015.04

©

MULTI CHANNEL AV RECEIVER

Sony Corporation

Published by Sony EMCS (Malaysia) PG Tec

STR-DH550/DH750

Ver. 1.1

HDMI Video

Input/Output (HDMI Repeater block)

Format 2D

4096 × 2160p @ 59.94/60 Hz

4096 × 2160p @ 50 Hz

3840 × 2160p @ 59.94/60 Hz

3840 × 2160p @ 50 Hz

4096 × 2160p @ 23.98/24 Hz

3840 × 2160p @ 29.97/30 Hz

3840 × 2160p @ 25 Hz

3840 × 2160p @ 23.98/24 Hz

1920 × 1080p @ 59.94/60 Hz

1920 × 1080p @ 50 Hz

1920 × 1080p @ 29.97/30 Hz

1920 × 1080p @ 25 Hz

1920 × 1080p @ 23.98/24 Hz

1920 × 1080i @ 59.94/60 Hz

1920 × 1080i @ 50 Hz

1280 × 720p @ 59.94/60 Hz

1280 × 720p @ 50 Hz

1280 × 720p @ 29.97/30 Hz

1280 × 720p @ 23.98/24 Hz

720 × 480p @ 59.94/60 Hz

720 × 576p @ 50 Hz

640 × 480p @ 59.94/60 Hz

1)

Supports YUV 4:2:0 / 8 bit format only.

2)

Supports 8 bit format only.

3)

These formats are also supported by an MHL connection.

MHL section

Supported MHL version Incorporates MHL 2 Maximum current 900 mA

iPhone/iPod section

DC 5V 1.0 A MAX USB works with iPhone 5s, iPhone 5c, iPhone 5, iPhone 4s,

iPhone 4, iPhone 3GS, iPhone 3G, iPod touch (2nd through 5th generation), iPod classic, and iPod nano (3rd through 7th generation).

Bluetooth technology works with iPhone 5s, iPhone 5c, iPhone 5, iPhone 4s, iPhone 4, iPhone 3GS, and iPod touch (4th and 5th generation).

a

Frame packing

1)

2)

3)

You can use “SongPal” app with this receiver via Bluetooth.

USB section

Supported format* MP3 (MPEG 1 Audio Layer-3): 32 kbps – 320 kbps, VBR WMA: 48 kbps – 192 kbps AAC: 48 kbps – 320 kbps WAV: 8 kHz – 48 kHz, 16 bit PCM * 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

Bluetooth section

Communication system Bluetooth Specification version 3.0 Output Bluetooth Specification Power Class 2 Maximum communication range Line of sight approx. 10 m (33 feet) Frequency band

2.4 GHz band (2.4000 GHz – 2.4835 GHz) Modulation method FHSS (Freq Hopping Spread Spectrum)

1)

3D

Side-by-Side

(Half)

Over-Under

(Top-and-Bottom)

–– –

–

aa3)a

aa

3)

–– –

Compatible Bluetooth profiles A2DP (Advanced Audio Distribution Profile) AVRCP 1.3 (Audio Video Remote Control Profile) Supported Codecs SBC4), AAC, aptX Transmission range (A2DP) 20 Hz – 20,000 Hz (Sampling frequency 44.1 kHz)

1)

The actual range will vary depending on factors such as obstacles between devices, magnetic fields around a microwave oven, static electricity, cordless phone, reception sensitivity, antenna’s performance, operating system, software application, etc.

2)

Bluetooth standard profiles indicate the purpose of Bluetooth communication between devices.

3)

Codec: Audio signal compression and conversion format

4)

Subband Codec

General

Power requirements

2)

3)

Area Power requirements

US, CND, TW 120 V AC, 60 Hz MX 127 V AC, 60 Hz AUS 230 V AC, 50 Hz AEP, UK, E12 230 V AC, 50/60 Hz BR 127/220 V AC, 60 Hz E12 220 V – 240 V AC, 50/60 Hz

Power consumption 240 W (Except DH550 : AEP, UK, US, CND, AUS, E12) 200 W (DH550 : AEP, UK, US, CND, AUS, E12) Power consumption (during standby mode)

0.3 W (When “Control for HDMI”, “Pass Through” and “Bluetooth Standby” are set to “Off”.)

0.5 W (When “Control for HDMI” is set to “On”, “Pass Through” and “Bluetooth Standby” are set to “Off”.) Dimensions (width/height/depth) (Approx.) 430 mm × 156 mm × 329.4 mm (17 in × 6 1/4 in × 13 in) including projecting parts and controls Mass (Approx.) E12 model:

8.0kg (17 lb 11 oz) Other models:

7.6kg (16 lb 13 oz) Design and specifications are subject to change without notice.

Supplied accessories

• Quick Setup Guide (1)

• Reference Guide (1)

• Remote control (RM-AAU190) (1)

• R6 (size AAA) batteries (2)

• FM wire antenna (aerial) (1)

• AM loop antenna (aerial) (1)

• Optimizer microphone (ECM-AC2) (1)

Design and speciﬁcations are subject to change without notice.

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

Abbreviation AUS : Australian model BR : Brazilian model CND : Canadian model E12 : 220 – 240V AC area in E model MX : Mexican model TW : Taiwan model

2

STR-DH550/DH750

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)

To Exposed Metal Parts on Set

AC

1.5 kΩ0.15 μF

Earth Ground

voltmeter (0.75 V)

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

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 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!

SERVICING NOTES

MODEL IDENTIFICATION –BACK PANEL–

Part No.

Model Part No.

DH550: US, Canadian DH550: AEP , UK DH550: Australian DH550: 220 – 240 V AC area in E model DH750: US, Canadian DH750: AEP , UK DH750: Australian DH750: Taiwan DH750: Mexican DH750: Brazillian

4-487-917-0[] 4-487-917-1[] 4-487-917-2[] 4-487-917-3[] 4-448-923-0[] 4-448-923-1[] 4-448-923-2[] 4-448-923-3[] 4-448-923-4[] 4-448-923-6[]

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)

NOTE OF REPLACING THE IC2402 AND IC2900 ON THE MAIN BOARD

IC2402 and IC2900 on the MAIN board cannot exchange with single. When these parts on the MAIN board are damaged, exchange the entire mounted board.

NOTE OF REPLACING THE IC3514 ON THE HDMI BOARD

IC3514 on the HDMI board cannot exchange with single. When this part on the HDMI board is damaged, exchange the entire mounted board.

NOTE OF REPLACING THE IC902 (DH750) ON THE STANDBY DCDC BOARD

IC902 (DH750) on the STANDBY DCDC board cannot exchange with single. When this part on the STANDBY DCDC board is damaged, exchange the entire mounted board.

CAPACITOR ELECTRICAL DISCHARGE PROCESSING

When checking the board, the electrical discharge is necessary for the electric shock prevention. Connect the resistor to both ends of respective capacitors.

• Main Board C930, C931

MAIN BOARD (Conductor side) –

: 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.

SPECIAL COMPONENT NOTICE

The components identiﬁed by mark 9 contain conﬁdential information. Strictly follow the instructions whenever the components are repaired and/or replaced.

NOTICE POUR COMPOSANTS SPÉCIAUX

Les composants identiﬁés par la marque 9 contiennent des informations conﬁdentielles. Suivre scrupuleusement les instructions chaque fois qu’un compo-

sant est remplacé et / ou réparé.

(To both ends of each capacitor)

800 :/2 W

C931

C930

4

This set can be disassemble according to the following sequence.

Note:

SET

2-1. CASE (ENTRY) (Page 5)

SECTION 2

DISASSEMBLY

STR-DH550/DH750

Ver. 1.1

2-2. FRONT PANEL SECTION (Page 6)

Follow the disassembly procedure in the numerical order given.

Note:

2-3. BACK PANEL SECTION (Page 7)

2-4. MAIN BOARD SECTION (Page 8)

2-5. MAIN BOARD (Page 9)

2-1. CASE (ENTRY)

3 three screws (+BVTP 3 u 8)

1 three screws (B-TYPE 4 u 8)

4

5 case (entry)

4

2 three screws

(B-TYPE 4 u 8)

5

STR-DH550/DH750

Ver. 1.1

2-2. FRONT PANEL SECTION

:LUHVHWWLQJ

pin, lead

USB INSULATION MT PC BOARD

front side

MAIN board

heat sink

1 Wire is removed from the pin, lead.

(DH750)

5 Wire is removed from the pin, lead.

3 Wire is removed from the pin, lead.

9 front panel section

7 CN391

(4P)

8 five screws (+BVTP 3 u 8)

2 CN2900 (5P)

6 wire (flat type) (14 core) (CN2600)

(DH750)

4 wire (flat type) (29 core) (CN2004)

:LUHVHWWLQJ

pin, lead

(DH750)

front side

INSULATION board (DH750)

6

2-3. BACK PANEL SECTION

:LUHVHWWLQJ

STR-DH550/DH750

Ver. 1.1

rear side

pin, lead

STANDBY DCDC board

1 CNP902 (4P)

4 CN1901 (12P)

3 CN941 (4P)

(DH750)

2 Wire is removed from the pin, lead.

5 CN3513 (3P)

7 wire (flat type) (23 core) (CN3514)

8 three screws (+BVTP 3 u 8)

(DH750)

8 one screw (+BVTP 3 u 8)

8 six screws (+BVTP 3 u 8)

9 five screws (+BVTP 3 u 8)

0 back panel section

6 wire (flat type)

(9 core) (CN2003)

7

STR-DH550/DH750

Ver. 1.1

2-4. MAIN BOARD SECTION

(DH750)(DH550)

5 USB INSULATION MT PC board

6 two screws (+BVTP 3 u 8)

D

C

4 one screw

(+BVTP 3 u 8)

1 Wire is removed from the pin, lead.

B

E

7 two screws

(+BVTP 3 u 8)

8 MAIN board section

5 USB INSULATION MT PC board

8 two screws (+BVTP 3 u 8)

4 one screw (+BVTP 3 u 8)

7 INSULATION board

B

C

2 CN951 (5P)

6 two screws

(+BVTP 3 u 8)

1 Wire is removed from the pin, lead.

9 two screws (+BVTP 3 u 8)

qa MAIN board section

:LUHVHWWLQJ

rear side

pin, lead

MAIN board

chassis

D

3 CN950 (5P)

B

C

E

0 one screw

(+BVTP 3 u 8)

(DH750)

8

2-5. MAIN BOARD

Note: This illustration sees the MAIN board from back side.

(DH750) (DH550)

STR-DH550/DH750

3 heat sink section

1 Remove the thirty solders.

(DH550) Remove the forty-two solders. (DH750)

3 heat sink section

FF

F

4 MAIN board

(DH750)

2 one screw (+BVTP 3 u 8)

(DH750)

2 one screw (+BVTP 3 u 8)

(DH550)

2 one screw (+BVTP 3 u 8)

9

STR-DH550/DH750

SECTION 3

TEST MODE

TUNER AM STEP CHANGE MODE (US and Canadian models only)

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

Procedure:

1. Press the [

2.

Turn the [INPUT SELECTOR] knob to select the “AM TUNER”.

] button to turn on the main power.

?/1

3. Press the [?/1] button to turn off the main power.

4. While pressing the [TUNING MODE] button, press the [?/1] button to turn on the main power.

5. Either the message “10K Step” or “9K Step” appears.

6. Repeat step (4) to select desired step.

VACUUM FLOURESCENT DISPLAY TEST MODE

All ﬂ ourescent 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 pressing [SPEAKERS] and [DIMMER] buttons simultaneously, press the [

] button to turn on the main power.

?/1

1. ALL segments light on.

USB ARC MEM D.R.C. True HD PL EQ DTS-HD ST D.C.A.C. SLEEP OPT BT COAX HDMI SP A B

2. Press the [DISPLAY] button to conﬁ rm display as below.

USB ARC MEM D.R.C. True HD PL EQ DTS-HD ST D.C.A.C. SLEEP OPT BT COAX

HDMI

SP A B

k

3. Press the [DISPLAY] button to conﬁ rm display as below.

USB ARC MEM D.R.C. True HD PL EQ DTS-HD ST D.C.A.C. SLEEP OPT BT COAX

HDMI

SP A B

dB MHz k Hz

4. Press the [DISPLAY] button, 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:

1. While pressing [MUSIC] button, press the [

] button to

?/1

turn on the main power.

2.

The message “S.F. CLEAR” appears for a moment and initialization is performed.

SOFTWARE VERSION DISPLAY MODE

The software version is displayed.

Procedure:

1. While pressing [A.F.D./2CH] and [PURE DIRECT] buttons simultaneously, press the [

] button to turn on the main

?/1

power.

2. The message “H55 XXX” or “H75 XXX” appears.

XXX: Area display Each time the [DISPLAY] button is pressed, “SYS. vX.XX”, “MAIN vX.XX”, “VIDEO vX.XX”, “OSD vX.XX” and

“SFLASHvX.XX” appear in this order, and returns to the “H55 XXX” or “H75 XXX” display.

X.XX: Software version

KEY CHECK MODE

Each button can be checked.

Procedure:

1. While pressing [SPEAKERS] and [PURE DIRECT] buttons simultaneously, press the [

] button to turn on the main

?/1

power.

2. The message “REST 12” appears.

Every pressing of any button other than the [

?/1

] counts

down the buttons.

3. The buttons which are already counted once are not counted again.

4. When all buttons are pressed, “REST 00” appears.

SWAP ALL MODE

The signal will be swap to all channels so that all speakers will have sound output.

Procedure:

1. While pressing [PURE DIRECT] and [MOVIE] buttons simultaneously, press the [

] button to turn on the main

?/1

power.

2. “SWAP MODE” appears.

INITIALIZE MODE

All preset contents are cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair.

(a) SHIPMENT MODE

Procedure:

1. While pressing [A.F.D./2CH] and [DIMMER] buttons simultaneously, press the [

] button to turn on the main

?/1

power.

2. The message “CLEARING” appears and the memories are reset to the default values.

3. When done, the message “CLEARED *” appears, the set will power off.

(b) ALL CLEAR INITIALIZE

Procedure:

1. While pressing [A.F.D./2CH] and [DISPLAY] buttons, press the [?/1] button to turn on the main power.

2. The message “CLEARING” appears and the memories are reset to the default values.

3. When done, the message “CLEARED *” appears, the set will power on.

(c) USER INITIALIZE

Procedure:

1. Hold the [

] button for 5 seconds.

?/1

2. The message “CLEARING” appears on the display.

3. After few seconds, “CLEARED *” appears.

PROTECTOR AUTO OFF

To disable auto off after protector occur.

Procedure:

1. While pressing [DISPLAY] and [MOVIE] buttons simultaneously, press the [

] button to turn on the main power.

?/1

2. “PROTEVER” appears and switch on the set.

DCAC TEST MODE

To test audio output from mic input and speakers.

Procedure:

1. While pressing [MUSIC] and [DIMMER] buttons simultaneously, press the [

] button to turn on the main power.

?/1

2. The message “MIC” appears.

MIC: mode that output audio from mic input

10

STR-DH550/DH750

HISTORY MODE

The state that the set is used is memorized.

Procedure:

1. While pressing [TUNING MODE] and [DISPLAY] buttons simultaneously, press the [

] button to turn on the power and

?/1

“HISTORY” is displayed.

2. Each time the [ M ] [ m ] key of remote commander is pressed,

the item is switched in order as follows.

Items Display

Protector Count C O U N T x x x Total Power ON time T x x x x x H x x M Main Power On M x x x x x H x x M Protector type P R O T x x x x Sound Field S N D F I E L D Function F U N C T I O N Input Mode I N P M O D E Digital Select D I G S E L E C T Stream S T R E A M I N F O Channel Conﬁg C O N F x x x x x Headphone H E A D P H x x x Volume V O L _ x x Muting M U T I N G _ x x Bass B A S S x x x Treble T R E B x x x Front Level F x x x / x x x Center Level C x x x / x x x Surround Level S x x x / x x x

Surround Back Level

(Only for STR-DH750)

Front Height Level

(Only for STR-DH750) Temperature T E M P _ Total Power On T x x x x x H x x M Main Power On M x x x x x H x x M Power On Count R E B O X _ x x

B x x x / x x x

H x x x / x x x

USB UPDATE TEST MODE

To update micontroller software through USB.

Procedure:

1. Plug in USB device in power off condition.

2. While pressing [TUNING MODE] and [PURE DIRECT] buttons simultaneously, press the [?/1] button to turn on the main power.

3. The message “UPDATING” appears.

4. If the updating progress succeeds, the message “COMPLETE” appears.

5. If the updating progress fails, the message “ERROR” appears.

USB UPDATE VERSION MODE

Function that displays the version number of all firmware to check whether USB Update Test is necessary or not.

Procedure:

1. While pressing [TUNING MODE] and [DIMMER] buttons, press the [?/1] button to turn on the main power.

2. The message “VER X.XXX” is displayed. “X.XXX” is calculated by adding all ﬁ rmware version.

Example: (MCU ver. + VIDEO ver. + DSP ver. + OSD ver. + 6)/10 = USB Update version MCU = 1.01, VIDEO = 1.04, DSP = 1.02, OSD = 1.03 ↓ (1.01 + 1.04 + 1.02 + 1.03 + 6)/10 = 1.010

1.010 = X.XXX

11

STR-DH550/DH750

Ver. 1.1

FIX MODEL AND DESTINATION MODE

This mode is to ﬁx the set for model & destination. When turning on the set, the message below appears if the setting is not ﬁxed with its model or destination or both (model & destination).

Items Display

MODEL & AREA NOT FIX

MODEL NOT FIX M O D E L. U N F I X AREA/DESTINATION

NOT FIX

M D. D S T. U N F I X

D E S T. U N F I X

Procedure:

1. Press the [?/1] button to turn on the main power.

2. While pressing [DISPLAY] button, press and release the [A.F.D./2CH], [MOVIE], [MUSIC] button in order, the message “SPECIALIZE” appears.

3. Press the [ M ] or [ m ] key of the remote commander, the message “<SPECIAL>” appears.

4. Press the [

] key of the remote commander to enter the

Special Menu List.

5. Each time the [ M ] or [ m ] key of the remote commander is pressed, the item is switched in order as follows.

Items Display

MODEL setting M O D E L DESTINATION setting D E S T I N Y

MODEL & DESTINATION check

SYSTEM VERSION S Y S v X. X X X MAIN VERSION M A I N v X. X X VIDEO VERSION V I D E O v X. X X OSD VERSION O S D v X. X X DSP SFLASH1 VER S F L A S H v X. X X

M O D E L + D E S T

6. Go to MODEL setting and press the [ ] key of remote commander.

7. Either one of the message as below appears.

Items Display

Model not ﬁx yet M O D E L. U N F I X Model STR-H55 ﬁx H 5 5 f i x Model STR-H75 ﬁx H 7 5 f i x

8. Press the [ M ] or [ m ] key of remote commander to set model info as “H55 ﬁ x” or “H75 ﬁ x” if message “MODEL UNFIX” appears.

9. Press the [

] key of remote commander to select the model.

10. The message “MODEL” appears.

11. Go to DESTINATION setting and press the [

] key of

remote commander.

12. Either one of the display below appears according to the destination of the set.

Items Display

Destination D E S T U N F I X Destination UCA ﬁx U C A f i x Destination J ﬁx J f i x

TW/SA2

Destination Destination SP/CN ﬁx C N f i x Destination KR ﬁx K R f i x Destination E2/E3 ﬁx C H 3 f i x

Destination CEL ﬁx C E L f i x Destination AU ﬁx A U f i x Destination E12 ﬁx E 1 2 f i x Destination E51 ﬁx E 5 1 f i x Destination BR ﬁx B R f i x Destination AR ﬁx A R f i x Destination MX ﬁx M X f i x

ﬁx T W f i x

13. Press the [ M ] or [ m ] key of remote commander to set destination info if message “DEST UNFIX” appears.

14. Press the [ ] key of remote commander to select the destination.

15. The message “DESTINY” appear.

16. Go to MODEL & DESTINATION check and press the [ ] key of remote commander.

17. Either one of the message as below appears.

Items Display

MODEL & AREA NOT FIX M D. D S T. U N F I X MODEL NOT FIX M O D E L. U N F I X DESTINATION NOT FIX D E S T. U N F I X STR-H55 H 5 5 x x x

STR-H75 H 7 5 x x x

xxx: Area display

18. Repeat step (6) onwards if message “MD.DST.UNFIX” appears.

19. Repeat step (6) until step (10) and continue with step (16) onwards if message “MODEL.UNFIX” appears.

20. Repeat step (13) onwards if message “DEST. UNFIX” appears.

21. Set need to be reset and updated again if the message appeared incorrectly.

22. Press the [ M ] or [ m ] key of remote commander goes to “MD. DST.UNFIX”.

23. Press the [

] key of remote commander.

24. The set will power off and then power on by itself.

25. Start the setting again from step (1) onwards.

26. Perform SHIPMENT MODE if the message appears correctly.

27. The set will be power off itself and can be used as normal by pressing [?/1] button.

12

STR-DH550/DH750

SECTION 4

FM TUNER CHECK

MHL VBUS TEST MODE

To display MHL VBUS status

Procedure:

1. Press the [

2. While pressing [DISPLAY] button, press and release the [MUSIC], [MOVIE], [A.F.D./2CH] button in order, the message “VBUS STAT” appears.

3. Press the [ ] key of the remote commander to check the items.

No Error N O E R O R Current Limited C U R L I M I T D Current Stopped C U R S T O P P D

] button to turn on the main power.

?/1

Items Display

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: 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.”

13

STR-DH550/DH750

• Circuit Boards Location

SECTION 5

DIAGRAMS

STANDBY DCDC board

NFC ICON PC board (DH750)

RC-S801/A5 (WW) (DH750)

POWER KEY board

HEADPHONE board

TUNER1 board

HDMI board

FRONT JACK board

MAIN board

BLUETOOTH MODULE (DH750)

DISPLAY board

14

5-1. BLOCK DIAGRAM – ANALOG AUDIO Section –

J402 (1/2)

AUDIO

TV IN

AUDIO

SA-CD/CD IN

AUDIO

VIDEO IN

AUDIO

SAT/CATV IN

L

R

J401

L

R L

R

R-ch

>001B

ANALOG

VIDEO/USB

SECTION (Page 18)

>002B

DIGITAL SECTION (Page 16)

SW OUT

RCH-N RCH-P

LCH-P

LCH-N

FL OUT

SL OUT

C OUT

DH750

STR-DH550/DH750

Ver. 1.1

DIR FUNCTION SELECT

IC400

INL8

22

R-ch

1-IN

2

1+IN

3

2-IN

5

INR8

6

LINE AMP

IC402

1OUT

2OUT

7

R-ch

1

R-ch

INR8

23

ADCL

50

ADCR

27

INL6

INR6

28

24

INL7 INR7

25

31

INL4 INR4

32

INL2

35

INR2

36

FLIN

46

FRIN

47

SLIN

42

SRIN

43

CIN

44

SWIN

45

FLOUT

FROUT

SBLOUT

SBROUT

SLOUT

SROUT

COUT

R-ch

49

7

R-ch

6

13

R-ch

12

11

R-ch

10

9

L-IN

FL

DH750

SBL

SL

C

>003B

DIGITAL SECTION (Page 16)

>004B

AMP SECTION (Page 17)

ANTENNA

J100

AUTO CAL

MIC

FM

75ȍCOAXIAL

AM

US, CND,

MX, BR CN104

CN102

AEP, UK, AUS,

E12, TW

CN103

FRF1

4

ARF2

7

ARF1

6

FM RECEIVER

IC101

LOUT

ROUT

IIC/RDSI

X1

19

18

X101

32.768kHz

DA 13

CK

X2

15 14

10

8

AUDIO AMP

IC101

75

R-ch

SBL OUT

13

6

5

7

TUNER_SCL

TUNER_SDA

TUN_RDS_SIGNAL

SYSTEM

CONTROL

IC2001 (1/6)

R-ch

SBLIN

40

SBRIN

41

J402 (2/2)

INL3

33

INR3

34

INL1

37

INR1

38

DA

CL

4

3

17

16

EVOL_CLK

EVOL_DATA

SWOUT

8

RY301

RELAY

DRIVER

Q301

13

SW_RY

L

R

AUDIO

SUBWOOFER OUT

6LJQDOSDWK

: AUDIO : TUNER : MIC

5FKLVRPLWWHGGXHWR VDPHDV/FK

STR-DH550/DH750

1515

STR-DH550/DH750

5-2. BLOCK DIAGRAM – DIGITAL Section –

OPTICAL

ANALOG AUDIO SECTION

(Page 15)

ANALOG VIDEO/USB

COAXIAL

SA-CD/CD

(ASSIGNABLE) IN

DIGITAL OPTICAL

IN 2

(TV ASSIGNABLE)

DIGITAL OPTICAL

IN 1

(SAT/CATV

ASSIGNABLE)

>003B

>005B

SECTION (Page 18)

J2200

RECEIVER

IC2201

OUT

RECEIVER

IC2200

OUT

DIGITAL AUDIO

INTERFACE RECEIVER

IC2203

63

L-IN

R-ch

USB

WAVE SHAPER

IC2202

6

1

5

23

ADINL

45

44

ADINR

62

RXIN2 USB SPDIF

63

RXIN1 COAXIAL

59 RXIN5 OPTICAL GAME

RXIN6 OPTICAL SAT/ CATV

58

DATAOUT

MPOUT4 MPOUT1 MPOUT2 MPOUT3

MCKOUT

LRCKOUT

BCKOUT

16 22 19 20 21

13 15 14

L/R_IN DIR_IN

65

A/D_2CH

57

SL/SR_IN

40

C/SW_IN

58

SBL/SBR_IN

62

MCLK_IN

54

LRCLK_IN

59

BCLK_IN

42

DSP

IC2400

SBL/SBR_OUT

SL/SR_OUT

C/SW1_OUT

L/R_OUT

CLKIN

XTAL

BCLK_OUT

LRCLK_OUT

MOSI

SPICLK

MISO

DSP_CS

50

41 56

48

12

X2400

25MHz

13

60 61

SERIAL FLASH

IC2401

19 21 20 24

5

SI

6

SCK

2

SO

1

CE#

13

12 11

6

7 8

D/A CONVERTER

DATA4

DATA3 DATA2

DATA1

BCK LRCK

SCK

IC2301

MC/SCL/DEMP

MD/SDA/MUTE

3

45

VOUT1 VOUT2

VOUT7 VOUT8

VOUT5

VOUT6

VOUT3

VOUT4

27 26

R-CH

16 15

R-CH

FL OUT

SBL OUT

>002B

20

19

R-CH

22

21

SL OUT

C OUT

SW OUT

ANALOG AUDIO

SECTION (Page 15)

>006B

DIGITAL VIDEO

SECTION (Page 19)

SP_SERIES

MUTE

CEC

XOUT

X2200

24.576MHz

9

MUTE

PROTECTION

Q2200

31

32

XIN

3 - 960, 61

10

MPIN4

XMCK 30

MUTEB

A1 BY

24

1

1CK2QD

BINARY

COUNTER

IC2204

8

68

DIR FSRATE

D2200

74

DIR-SIGNAL

25

SELECT

6

MUTING

IC2205

CEC DATA

SWITCH

Q2000 ~ Q2003

77

DIR-XSTATE

65 64

HDMI_CEC_IN

HDMI_CEC_OUT

SYSTEM

CONTROL

IC2001(2/6)

16 38

15

DAC_IIC_SDL

DAC_IIC_SCA

INITX

E2P_DATA

E2P_SCL

RESET IC

IC2009

4

VOUT

EEPROM

IC2008

19

20

SDA

5

SCL

6

6LJQDOSDWK

: AUDIO : AUDIO (DIGITAL)

5FKLVRPLWWHGGXHWR VDPHDV/FK

STR-DH550/DH750

1616

5-3. BLOCK DIAGRAM – AMP Section –

STR-DH550/DH750

>004B

ANALOG AUDIO

SECTION (Page 15)

FL

FR

DH750

SBL

SBR

POWER AMP

Q620 Q622 Q624 Q625

Q670 Q672 Q674 Q675

POWER AMP

Q820 Q822 Q824 Q825

Q870 Q872 Q874 Q875

LIMITER

Q602, Q603

LIMITER

Q652, Q653

LIMITER

Q802, Q803

LIMITER

Q852, Q853

BOOSTER

Q600

BOOSTER

Q601

BOOSTER

Q650

BOOSTER

Q651

BOOSTER

Q800

BOOSTER

Q801

BOOSTER

Q850

BOOSTER

Q851

CURRENT

DETECT

Q604

CURRENT

DETECT

Q654

CURRENT

DETECT

Q804

CURRENT

DETECT

Q854

CURRENT

DETECT

Q605

CURRENT

DETECT

Q655

CURRENT

DETECT

Q805

CURRENT

DETECT

Q855

D650

D800

D850

D600

RELAY

DRIVER

Q929

RELAY

DRIVER

Q350

RELAY

DRIVER

Q360

RY380

RY350

RY360

TB501 (1/2)

TB503

+

L

+

R

-

+

L

-

+

R

-

J101

PHONES

FRONT A

SURROUND BACK/

BI-AMP/ FRONT HIGH/

FRONT B

SPEAKERS IMPEDANCE USE 6-16

POWER AMP

SL

SR

C

Q720 Q722 Q724 Q725

Q770 Q772 Q774 Q775

POWER AMP

Q570 Q572 Q574 Q575

LIMITER

Q702, Q703

LIMITER

Q752, Q753

LIMITER

Q552, Q553

BOOSTER

Q700

BOOSTER

Q701

BOOSTER

Q750

BOOSTER

Q751

BOOSTER

Q550

BOOSTER

Q551

TH251

TH252

CURRENT

DETECT

Q704

CURRENT

DETECT

Q754

CURRENT

DETECT

Q554

CURRENT

DETECT

Q705

CURRENT

DETECT

Q755

CURRENT

DETECT

Q555

PROTECTOR Q320 ~ Q321, Q323 ~ Q325

D700

D750

D550

RELAY

DRIVER

Q355

RELAY

DRIVER

Q365

RY355

RY365

D2304

D2302

D2303

TB502

+

L

-

+

R

-

TB501 (2/2)

+

-

BRIDGEABLE RELAY

SURROUND

CENTER

>007B

DISPLAY/POWER

SECTION (Page 20)

69 70 18 67 23 14 12 15

13 4

11

STR-DH550/DH750

TEMP_SENSOR_2

TEMP_SENSOR_1

SYSTEM CONTROL

IC2001 (3/6)

PROTECT

HP-RY

LIMITER

SW_RY

C/SL_SR_RY

SBL_SBR_RY

FRONT_SPK_RY

BRIDGEABLE_RY

HP_DET

6LJQDOSDWK

: AUDIO

5FKLVRPLWWHGGXHWR VDPHDV/FK

1717

STR-DH550/DH750

5-4. BLOCK DIAGRAM – ANALOG VIDEO/USB Section –

VIDEO

VIDEO IN

VIDEO

SAT/CATV IN

DC5V 1A MAX

PROGRAMMING JIG

(HDMI KSV)

J200 (1/2)

CN106

CN2601

+D

5 4 3 1

-D

Prog_VURX SCK Prog_VUTX MD0

POWER CONTROL

IC2901

EN

FAULTEN

OVER VOLTAGE CONTROL

IC2902

VIN1

4

5

VIN2

VIDEO DRIVER

IC200

DECODER

IC2900

USB_DP

22

USB_DM

21

KEY_ROW3/SDA

KEY_ROW2/SCL

USB_SCL

KEY_ROW1/BUSY

USB_BUSY

9 8 7 6 4 2

959894 90 96 93 91

USB_SDA

5

USB_PCONT

9943

USB_OVC

Prog_VURX

73

Prog_VU_SCK

71

Prog_VUTX

72 47 MD0

LED_PLAY/LRCK/SPDIF

KEY_COL3/MCHNG

KEY_COL1/IRPTO

USB_IRPTO

USB_MCHNG

HDMI CONTROLLER

IC2602 (1/2)

XOUT_PLL

XIN_PLL

RESETX

USB_RESET

OUT

VSW

1

SYSTEM CONTROL

IC2001 (4/6)

MUTE

PROTECTION

Q200 ~ Q201

6

25

15 14

X2900

16.9344MHz

BT_VURX BT_VUTX

BT-PCONT

APPLE_SDA

APPLE_SCL

APPLE_RST

DH750

66 65

3.3V VOLTAGE

64

11

10

9

CONTROL

Q2604

VMUTE

99

VSEL-SW

98

RCH_N

RCH_P LCH_P LCH_N

BTRX BTTX

3.3V

APPLE AUTHENTICATION

COPROCESSOR

IC2603

APPLE_SDA

2

APPLE_SCL

6

APPLE_RST

7

CN2600

2 3 4 5 9 8 12

29P-CONT

DH750

BT MODULE

VOLTAGE

CONTROL

Q2600

LCH-N LCH-P

RCH-P RCH-N

USB

J200 (2/2)

STBY3.3V

DIGITAL SECTION

(Page 16)

>001B

ANALOG AUDIO

SECTION (Page 15)

6LJQDOSDWK

: AUDIO (DIGITAL) : VIDEO : USB

>005B

VIDEO

MONITOR OUT

STR-DH550/DH750

1818

5-5. BLOCK DIAGRAM – DIGITAL VIDEO Section –

HDMI RECEIVER

IC3514

STR-DH550/DH750

Ver. 1.1

HDMI IN

SAT/CATV

GAME

(for AUDIO)

BD/DVD

CN3504

1 3 4 6 7

9 10 12 15 16 19 13 18

CN3503

1

3

4

6

7

9 10 12 15 16 19 13 18

CN3502

1

3

4

6

7

9 10 12 15 16 19 13 18

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

35

R2X2+

34

R2X2-

33

R2X1+

32

R2X1-

31

R2X0+

30

R2X0R2XC+

29

R2XC-

28

DSCL2

85

DSDA2

84

CBUS_HPD2

86

R2PWR5V87

46

R3X2+

45

R3X2-

44

R3X1+

43

R3X1-

42

R3X0+

41

R3X0-

40

R3XC+

39

R3XC-

89

DSCL3

88

DSDA3

90

CBUS_HPD3

R3PWR5V91

54

R4X2+

53

R4X2-

52

R4X1+

51

R4X1-

50

R4X0+

49

R4X0-

48

R4XC+

47

R4XC-

93

DSCL4

92

DSDA4

94

CBUS_HPD4

R4PWR5V95

T0X2+

T0X2-

T0X1+

T0X1-

T0X0+

T0X0-

T0XC+

T0XCTXDSCL0 TXDSDA0 TX_HPD0

MUTEOUT/GPIO9

RESET 69

159 158 157 156 155 154 153 152 107 106 105

121-122, 124-128, 130, 136

129

+5V

HOT PLUG DET

D2604

RESET IC2601

RESET SW

Q2601

RESET SW

Q2602

DATA2+ DATA2– DATA1+ DATA1– DATA0+

DATA0– CLOCK+ CLOCK– SCL (5V)

SDA (5V)

CEC

+5V POWER

38

4

CN3200

1 3 4 6 7 9 10 12 15 16 19 13 18

9

SYSTEM CONTROL

IC2001 (5/6)

INITX

D2601

TV OUT

ARC

VU_RST

93

D2602

HDMI OUT

D2603

HDMI CONTROLLER

IC2602 (2/2)

HDMI_MUTE

37

INITX

38

MU_RST

43

SPARTA_RST

36

PE2/X0

PE3/X1

CEC

SP_SERIES

MUTE

48

49

DIGITAL SECTION (Page 16)

X2600

4MHz

>006B

DC5V 1A MAX

STR-DH550/DH750

VIDEO

(MHL)

CN3501

1 3 4 6 7

9 10 12 15 16 19 13 18

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

64

RX52+

63

RX52-

62

RX51+

61

RX51-

60

RX50+

59

RX50-

58

RX5C+

57

RX5C-

98

DSCL5

97

DSDA5

99

CBUS_HPD5

R5PWR5V

100

SS/GPIO2

SCLK/GPIO3

SD0/GPIO4 SD1/GPIO5

XTALIN

XTALOUT

117 118 119 120

113

114

X3001

27MHz

EEPROM

IC3512

/CS

1

SCK

6

DO

2

DI

5

6LJQDOSDWK

: AUDIO (DIGITAL) : VIDEO

1919

STR-DH550/DH750

5-6. BLOCK DIAGRAM – DISPLAY/POWER Section –

VACUUM FLOURESCENT

DISPLAY

ND101

312927

REMOTE CONTROL

SIGNAL RECEVER

IC100

MASTER VOLUME

INPUT

SELECTOR

ROTARY

ENCODER

EN101

ROTARY

ENCODER

EN100

F1 F2

45 FL_LAT 43 FL_CLK 44 FL_DATA

53 SIRC-IN

54 VOLUME_JOG

52 INPUT_JOG

SYSTEM CONTROL

IC2001 (6/6)

F1 F2

+5V

+6V (DCDC)

DC CONVERTER

TRANSFORMER

>007B

AMP SECTION

(Page 17)

+5V REG.

IC3518

T100

BRIDGEABLE RELAY

+5V REG.

SWITCHING

TRANSISTOR

Q101

+3.3V

IC3519

IC3513

IC3511

TO

AUDIO AMP

SECTION

+3.3V REG.

SWITCHING

TRANSISTOR

CONTROL

Q103 ~ Q104

IC102

+5V

+HV

(VCC)

-HV

(VCC)

+5V

+7V

-7V

+6V REG.

IC1905

+5V REG.

IC2300

+5V REG.

IC2000

RELAY DRIVER

Q920

RECT

D921

+7V REG.

-7V REG.

IC350

IC352

RY920

RECT

D910-913

F912

F913

F910

F911

POWER

TRANSFORMER

(MAIN)

T901

S115

S108 ~ S110, S111 ~ S114

S101 ~ S105

X2001 4MHz

56 POWER DET

55 AD_KEY1

57 AD_KEY2

48 X0

49 X1

FL-EN

PUREDIRECT

LED-ON

LED-STBY

PWR-RLY

STOP

42

58

36

37

+2V (DCDC)

+1.2V

4

66

+1.2V REG.

IC3517

+1.2V REG.

IC2402

+3.3V (DCDC)

LED DRIVER

Q102

LED DRIVER

Q110

LED DRIVER

Q111

+2V REG.

IC1907

+3.3V REG.

IC1906

LED

(PURE DIRECT)

D108

LED

(ON/STBY)

D110

STBY +3.3V

DH750

+3.3V REG. (STBY)

IC902

+3.3V REG. (STBY)

IC901

DH550

AC OFF DETECT

Q952

RELAY DRIVER

Q951

RECT D923

+12V

RECT

D901 ~ D904

D905

F940

F941

POWER

TRANSFORMER

(SUB)

T902

BR

VOLTAGE

SELECTOR

F902

S901

F901

RY951

AC IN

STR-DH550/DH750

2020

STR-DH550/DH750

Ver. 1.1

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.)

For Printed Wiring Boards.

Note:

• X : Parts extracted from the component side.

• f : internal component.

• : Pattern from the side which enables seeing.

Caution:

Pattern face side: (Conductor Side) Parts face side: (Component Side)

• Abbreviation AUS : Australian model BR : Brazillian model CND : Canadian model E12 : 220 – 240V AC area in E model MX : Mexican model TW : Taiwan model

Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

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 speciﬁ ed.

• f : internal component.

•

• C : panel designation.

• A : B+ Line.

• B : B– Line.

• Voltages and waveforms are dc with respect to ground

• Voltages are taken with VOM (Input impedance 10 M).

Voltage variations may be noted due to normal production

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production

• Circled numbers refer to waveforms.

• Signal path.

F : AUDIO f : TUNER L : USB E : VIDEO J : AUDIO (DIGITAL) N : MIC

• Abbreviation

AUS : Australian model BR : Brazillian model CND : Canadian model E12 : 220 – 240V AC area in E model MX : Mexican model TW : Taiwan model

: nonﬂ ammable resistor.

2

: fusible resistor.

5

Note:

The components identiﬁ ed by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number speciﬁ ed.

under no-signal (detuned) conditions. no mark

: FM

tolerances.

Note:

Les composants identiﬁ és par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spéciﬁ é.

• Waveforms – HDMI Board –

1 IC3514 <zzv (XTALIN)

27.0 MHz

50 mV/DIV, 10 ns/DIV

– MAIN Board –

2 IC2001 rl (X1)

4.0 MHz

500 mV/DIV, 100 ns/DIV

3 IC2203 3 (MCKIN)

60 ns

100 mV/DIV, 25 ns/DIV

104 mVp-p

3.0 Vp-p

544 mVp-p

5 IC2203 qf (BCKOUT)

3.84 Vp-p

3.06 MHz

1 V/DIV, 100 ns/DIV

6 IC2203 ea (XOUT)

24.5 MHz

500 mV/DIV, 10 ns/DIV

7 IC2400 rs (BCLK_IN)

320 ns

500 mV/DIV, 100 ns/DIV

8 IC2602 rk (PE2/X0)

4.0 MHz

500 mV/DIV, 100 ns/DIV

1.5 Vp-p

2.2 Vp-p

2.8 Vp-p

STR-DH550/DH750

4 IC2203 4 (BCKIN)

60 ns

10 mV/DIV, 50 ns/DIV

2121

13.2 mVp-p

9 IC2900 qg (XOUT_PLL)

16.9 MHz

200 mV/DIV, 25 ns/DIV

1.0 Vp-p

STR-DH550/DH750

Ver. 1.2

5-7. PRINTED WIRING BOARD – MAIN Board (Component Side) – • See page 14 for Circuit Boards Location. • : Uses unleaded solder.

A

B

C

D

TRANSFORMER

(Page 34)

E

F

TRANSFORMER

G

(Page 34)

HEADPHONE

H

(Page 42)

I

J

1

X2001, X2600

>001P

POWER

(MAIN)

T901

>002P

POWER

(MAIN)

T901

>003P

BOARD

CN107

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

MAIN BOARD (COMPONENT SIDE)

ÚDH550 ¾DH750

(CHASSIS)

LP401

CN951

CN950

(CHASSIS)

F912

F913

15

A921

F911

15

F910

RY380

CN391

14

ET301

SPEAKERS

C912

C913

R708

Q701

R014

C931

63($.(56,03('$1&(86(

+

–

C014

RY365

D365

W003

W001

R701

R700

R717

Q702

R387

E

Q703

R L

SURROUND

+

–

C015

R015

KA

R716

R705

C018

RY355

R365

KA

D355

D356 KA

R542

C570 R577

D571

L700

C708

R706

R704

Q700

¾

R018

R356

C563

C582

R562

E

C987

Q574

C586

R578

Q570

C585

R576

R543

R575

C988

R570

R601

R603

R608

Q601

L

+

–

RY920

D921

C930

R553

R558

BCEBCEBCEBCEBCEBCEBCEBCEBCEBCEBCEBCEBCEBCE

TB501 TB502

R L

FRONT A CENTER

+

–

C012

C013

R012

R567

Q553

R013

K

D920

R926

KA

E

D937

R927

R928

Q929

R551

R550

R566

R555

R556

R381

Q552

E

Q550Q551

E

+

(CHASSIS) (CHASSIS) (CHASSIS)

–

RY350

R920

KA

D350

R351

A

D911AK

D910 AK

D913

AK

D912

L550

R703

C558

R554

Q575

D572

+

–

C017

R563

C581

E

AK

R572

R617

SURROUND BACK/ BI-AMP/

FRONT HIGH/ FRONT B

R017

RY360

C353

R560

C564 R561

R579

AK

R571

R600

R386

E

Q603

¾

TB503

C351

D352AK

C560

R574

E

Q572

KA

R573

D570

R616

R606

Q602

E

R

J402

L R

AUDIO

+

–

TV IN

AUDIO

SUBWOOFER

OUT

AUDIO TV IN

AUDIO

SUBWOOFER

OUT

J401

L R

AUDIO

SAT/

CATV IN

AUDIO

VIDEO IN

AUDIO SA-CD/

CD IN

AUDIO

CATV IN

AUDIO

VIDEO IN

AUDIO SA-CD/

SAT/

CD IN

IC200

R679

R671

R676 R675

1528

29

FB2301

C2914

C660

C681

R670

R651

R667

R2304

¾

R2303

IC2301

114

C2308

C2303

C2916

R674

E

Q672

KA

R673

D670

Q653

C211

C201

Q200

Q201

R201

C200

C203

FB200

R2305

C2315

C2316

C2314

C2317

R2306

C2306

R2302 R471

C2915

R2919

IC2901

R2918

C813

R813

C832

R812

E

Q824

C836

R828

C820 R827

R650

R666

R384

E

C202

C210

10 13

IC2300

R472

R470

Q825

D822

C835

D821

R655

R656

Q652

(CHASSIS)

C016

R016

AK

D2304

AA K

D2302

AA

K

D2303

C713

R710

R713

R711

C732

C712

R712

E

Q724

Q725

D722

C736

KA

R728

R722

C731 Q720

C735

R726

C720 R727

R725 R720

D721

L600

C618

R252

R605

R604

TH252

Q600

R304

R302

R301

Q301

E

R361

RY301

AK

D360

C301

C487

C710

R729

R724

E

Q722

R613

C613

C632

R721

R612

R723

D720

E

Q624

Q625

D622

C636

R628

R753

C250

R758

R251

TH251

Q751

AK

C546

C547

FB2004

R2025

R610

C610

R611

R629

R624

C612

C631

E

Q622

KA

AAKKAK

R621

R622

R623

D620

Q620

C635

C620

R626

R627

R625

D621

R620

R751

R750

R767

R385

E

Q753

D301

IC2000

C2027

C2024

Q752

E

C763

C782

E

Q774

C786

R778

R766

R755

¾

R831 R881 R731 R781 R581 R531 R631 R681

C2026

CN2003

19

R763

R762

Q775

D772

R756

Q750

CN2003

19

(CHASSIS)

W002

C703

R2915

C2918

C553

R2920

C2917

R2921

IC2902

R2924

R2923

R2925

C2919

CN2900

C2033

15

C663

R663

C682

R662

Q772

E

Q674

C686

R773

R678

R653

R658

CN2900 15

C2312

C2311

C2310

C2313

C2320

C2318

C2319

R2916

C2321

R2922

R2914

D2902

R660

R661

C662

E

Q675

AK

D672

AK

R672

Q670

C685 C670 R677

D671

Q651

C803

C853

C753

C503

C603

C653

R2926

C2025

2

8

2

8

R2041

C2029

R2043

R760

C760

R761

R779

R774

C762

C781

E

KA

AK

R771

R772

D770

Q770

C785

C770

R776 R775

R777

D771

R770

L750

C758

R754

2

8

C481

Q820

R473

E

AK

R826 R825

C204

C2302

R2301

C483

R810

C812

R822

R820

C658

¾

CN2005

C2453

IC2402

R2300

C491

C482

C484

C480

1213

CN2600

R811

AK

L650

R654

Q650

1213

CN2600

J200

VIDEO

SAT/

CATV IN

VIDEO

VIDEO IN

MONITOR

VIDEO

OUT

J2200

COAXIAL

SA-CD/CD

(ASSIGNABLE) IN

IN 2

(TV ASSIGNABLE)

OPTICAL

IC2201

R2213

IC2202

R2217

C2203

C2214

R2214

(CHASSIS)

R2439

R2438

R2458

C2454

C2451

C2452

R2457

R2456

C2450

R2455

C2429

C2425 R2447

R2434

JL2405

¾

C441

C433

IC402

C432

R421

R422

R423

R420

C430

C434

R2603

C2604

C2605

14

FB2600

C863

C810

C882

R829

R824

R862

C831

E

Q822

Q874

C886

KA

R821

R878

R823

D820

14

R2216

C2206

C2215

K

A

D2201

FB2204

R2445

C2434 C2433 R2440

R2444

R2443 R2437

C2417

C431

R863

E

Q875

D872

JL2404

R2420

R2431

FB2402

C2445

C2444

C2426

C2427

C2424

R2421

C2428

C2430

C2441

75

76

IC2400

C2432

101

C2440

C2438

C2439

100

C2437

1

C2435

R2425

R2408 R2409

C885

R2432

JL2412

IC2008

R860 R879

AK

Q870

R876 R875

R870

R808

Q801

R2423

X2400

C2415

C2419

R2430

JL2406

IC2401

R2015

C2041

R2061

R2058 R2064

R2068

R2066

R874

C881

E

Q872

KA

R871

D870

R873

R801

R817

Q803

C2431

C2411

R2412

R2416

R2414

R2441R2442

C860

C862

R861

E

AK

R872

C870 R877

D871

R803

W2200

R2212

C2228

FB2206

R2238

R2236

R2200

JL2407

R2422

R2429

R2424

R2426

FB2400

51

JL2403

R2016

R2014

R2012

RB2005

R2063

R2309

R383

E

C2227

R2228

R2237

R2229

C2405

R2232

C2403

R2231

R2402

R2418

R2419

C2408 C2407

R2417

C2406

R2415

R2410

R2404

R2405

50

JL2402

R2403

R2401

FB2403FB2401

C2402

26

R2406

C2401

25

JL2401

R2449 R2448 R2452

R2435

R2436

R2450

R2451

R2454

RB2003

R2013

C2016

C2069

29

R800

RB2001

R2017

R2018

R2010

100 1

RB2007

RB2009

RB2011

25

C2323

¾

28

R816

E

76

IC2001

51

26

50

C2068

RB2014

R2081

RB2015

R2003

R2083

R2086

D2011

D2012

CN2004

FB2011

L800

C808

R806

R805

R804

Q802

Q800

C2220

R2227

JL2409 JL2408

RB2002

75

R2080

X2001

C2078

R2100

IC2009

213

R2202

X2200

R2221

IC2205

R2224

R2233

C2222

JL2411 JL2410 R2407

R2400

RB2006

RB2010

C2043

RB2013

R2090

C2088

R853

R2211

C2200

C2205

R2209

C2213

R2201

R2220

R2226

33

IC2203

R2234

48

C2219

49

C2224

C2225

FB2303

C2229

C2442

C2008

R2619 R2621

R2623

C2034

C2039

R2040

C2040

Q2000

Q2003

RB2008

E

C2042

E

R2019

RB2012

Q2001

C2012

C2044

C2038

R2037

R2021 R2022

1

2

Q321

Q324

E

R851

R858

(SAT/CATV

ASSIGNABLE)

IC2200

C2612 C2611 R2929 R2620 R2622

R2612 R2609

JL2601

D2003

E

Q2002

R2026

¾

R2927

IN 1

213

FB2201

R2206

R2205

R2203

C2207 17132

16

64

C2226

C2221

¾

JL2605

JL2602

JL2604

JL2603

C2920

C2922

D327

K

AA

R850

R867

R2204 R2218

FB2202

C2204

FB2203

C2223

R2235

R2239

IC2204

D2602

R2614

R2615 R2630 R2616

R2610

JL2600

R2901

X2900

R2900

C2921

Q2604

R323

C2210

FB2200

C2202

R2624

R2671

R2672

FB2900

IC2900

C2900

C2901

E

R382

E

Q853

D2200

R2219

R2222

R2223

R2004

R2007

C2609

C2610

C2904

FB2300

R866

PROGRAMMING JIG

(HDMI KSV)

CN2601

17

C2208 R2215

R2230

KA

R2225

RB2000

R2006

R2002

FB2000

IC2601

C2618

D2601

R2653

E

C2623 D2604 D2603

R2639

X2600

R2632

R2633

R2640

50

51

IC2602

75

76 C2614

¾

C2613

R2613

RB2800

R2605

R2904

R2931R2604

C2908

C2903

RB2803 10

C2902

11

20

C2905

21

D2900

D2901

C320

E

AA

K

Q320

Q323

L850

C858

R855

R856

E

Q852

R2611

E

22

2

Q2601

D2600

R2646

C2620

RB2802

R2906

41

FB2901

R327

D326

R325

R854

Q850Q851

1-889-543-

Q2200

R2008 R2005 R2000

R2001

CN2000

123

C2322

Q2602

R2642

R2654

R2651

R2652

E

R2655

R2666

R2645

R2644

R2934

JL2635

JL2628

C2624

C2625

JL2629

26

JL2630

25

JL2631

R2657

JL2634

R2659

R2660

JL2632

R2661

JL2633

R2658

JL2607

JL2606

C2627

1

R2665

R2664

100

R2669

C2628

R2667

R2617

R2656

C2631

R2668

C2634

IC2603

FB2601

R2607

R2932

C2635

R2606

FB2602

¾

Q2600

Ú

R2601

C2602

JC2670

C2606

C2607

R2634

R2910

C2911

R2911

R2908

R2912

1

40

JL2905 R2913

31

JL2906

C2913

30

JL2907

C2910

JL2904

JL2903

C2909

C2912

JL2900

R2902

JL2902

JL2901

R548 R544

C323

KA

D536

C548

R549

R547

C545

C325

E

Q325

R328

>008P

HDMI BOARD

CN3514

(Page 22)

STANDBY DCDC

10 13

CN2005

>006P

DISPLAY

BOARD

CN102

(Page 37)

21

(21)

>007P

BOARD CN1901

(Page 34)

K

STR-DH550/DH750

BT

>004P

TUNER1

BOARD

CN101

(Page 39)

>005P

FRONT JACK

BOARD

CN104

(Page 39)

MODULE

Note: IC2402 and IC2900 on the MAIN board cannot exchange

with single. When these parts on the MAIN board are damaged, exchange the entire mounted board.

2222

5-8. PRINTED WIRING BOARD – MAIN Board (Conductor Side) – • See page 14 for Circuit Boards Location. • : Uses unleaded solder.

STR-DH550/DH750

Ver. 1.2

1

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

MAIN BOARD

A

B

C

D

E

F

G

H

(CONDUCTOR SIDE)

¾DH750

CL2625

CL2623

CL2620

CL2018

CL2017

CL2015

CL2014

CL2011

CL2009

CL2005

CL2002

CL2001

CL2003

CL2627

C2622

R2933

R2673

CL381

R326

¾

C892

CL2621

CL2626

CL2622

CL2624

CL2019

CL2016

CL2013

CL2012

CL2010 CL2008

CL2007

CL2006

CL2004

CL2073

C2617

R2647

C2619

C2615

C2621

R2638

R2631

R2629

R2636

R2670

C2907

C2906

R2907

R320

CL2021

R2637

C2616

CL2020

¾

CL2024

R2625

R2626

CL2601 CL2022

CL2904

C878

Q855

E

C851

R852

C891

CL850

CL852

CL851

CL2202

C2209

CL2201

R2210

C2218

JL2027

CL2076

CL2077

CL2074

FB2003

CL2023

CL379

C2047

CL2628

CL2055

CL2051

CL2050

CL2025

R857

R868

R865

CL2075

R2009

C2009

R2042 R2011

R2094

R2084

R2085

C2045

C2046

C2065

R2075

R2077

CL2072

R2076

R2079

R2310

CL2026

CL2054

CL2058

CL2066

CL2056

CL2067

CL2068

CL2065

CL2060

CL2052

CL2053

CL2057

CL2059

CL2064

CL2061

CL2062

CL933

CL2063

KA

D850

C854

R869

R859 D851

Q854

E

KA

R864

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CL2200

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C2418

C2410

C2409

C2422

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CL2411

CL2410

CL2409

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R2308

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JL2000

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C2073

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C801

R802

C2421

C2416

C2413

C2414

C2420

R2427

C2423

CL2413

CL2412

C2037

R2093

CL2604

CL2606

C2327

CL382

CL2070

C804 Q804

E

R807

R818

C828

E

R815

C841C842

CL800

CL802

CL801

CL205

C208

R205

C207

R204

CL204

CL203

R203 C206 C205

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CL202

CL2040

CL2041

CL2042

CL2044

CL2406

CL2043

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CL2419

C2436

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CL2417

CL2416

R2446

CL2415

CL2039

CL454

CL2605

CL2603

CL438

D800

R809

R819

KA

D801

R814

CL2045

C2448

CL2418

CL2414

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C2331

C2329

CL453

CL2609

CL2608

CL2607

CL2071

KA

CL2610

CL452

CL2602

CL451

CL860

CL378

C692

CL337

CL200

CL201

CL374

C007

R407

CL2903

CL2046

C2309

FB2302

C2307

CL932

CL2611

C678

Q655

R668

E

C651 R652

CL650

CL652

CL651

CL338

CL341

CL340

C001

C003

R401

CL2901

CL2600

CL859

C654

R657

Q654

E

R665

C691

C051

C053

CL375

C057

R451

R403

CL442

CL2900

CL2902

D650

R669

KA

R659

KA

D651

R664

R453

R457

CL448

CL447

CL446

CL444

CL449

CL2038

¾

CL445

C805

C855

CL443

C705 C755 C555

CL441

C505 C605 C655

CL2030

CL2028

CL2037

CL2036

CL2029

CL450

CL2031

CL858

C751

C792

R752

CL339

C984

C002

CL861

R935

CL2032

Q755

E

CL752

CL751

C052

R309

R936

R308

2627

IC400

39 40

1

52

C499

CL392

C489

C450

CL391

C449

CL440

R450

R449

CL433

D750

C754

R769

R757

C778

R768

Q754

E

D751

R765

R764

C791

CL750

¾

C066

CL365

CL862

R307

¾

E

R363

Q360

R360

CL386

CL387

3

14 13

CL439

KA

R759

KA

IC350

CL434

C350

C354

CL431

CL437

CL380

C642

C067

CL430

CL355

CL390

CL931

21

C355

CL432

CL435

C601

R602

23

IC352

C628

R618

Q605

E

C641

CL602

CL600

CL601

C068

CL356

R358

E

Q355

CL855

C352

1

D600

KA

C604

R609

R607

R619

Q604

KA

E

D601

R614

R615

C065

CL357

R355

R366

E

Q365

C701

C742

R702

CL702

C064

CL358

R350

R367

CL857

C704

C728

R718

R707

Q705

E

CL700

CL701

R353

E

Q350

R939

R937

D700

R719

KA

R709

Q704

KA

D701

E

R714

R715

C741

C063

CL359

CL389

R925

Q920

E

CL856

R940

R938

CL384

Q555

C551

C592

R552

C062

CL360

CL385

R921

C935

C934

CL383

D550

AAKK

C578

R559

C554

R569

R557

Q554

R568

E

D551

E

R565

R564

C591

CL551

CL552

CL550

CL369

CL370

CL371

CL373

CL372

CL368

C911

CL367

C910

CL366

CL361

CL363

C322

CL364

CL362

21

1-889-543-

(21)

I

J

K

STR-DH550/DH750

2323

STR-DH550/DH750

Ver. 1.1

5-9. SCHEMATIC DIAGRAM – MAIN Board (1/7) –

A

B

C

D

E

F

G

H

I

J

K

1

>001S

MAIN

BOARD

(5/7)

(Page 28)

3.3V_TH

D-GND

TEMP-SENSOR-2 TEMP-SENSOR-1

LIMITER

PROTECT

HP-DETECT

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

MAIN BOARD (1/7)

R544

0

C548

0.1u

C545

47u 35V

R548

22k

2.2kR252

CURRENT DETECT

58

2SA1162-G

LIMITER

0.6

C581

4p

0.1uC250

TH251

10k

CL378 CL379 CL380 CL381 CL382 CL383

D536

DZ2J051M0L

R547

6.8k

R549

22k

TH252

10k

2.2kR251

L550

R550 4.7

C578

0.022u

Q555

MSB92T1G

0

C551 220p

R558

R552

6.2k

4.7k

Q550

MN2488-OPY-MK

BOOSTER

E

C

B

1.1

C592

R554

100

Q552

R579

56k

0.1

Q570

B

E

CC

0.1

C570

R576

3300p

470

R575

R577

2.2k

D571

DA2J10100L

D572

DA2J10100L

R551

10

C554

0.01u

R557

47k

-0.70

R565

1.5k

0

C +VE

47p

R555

22k

R556

2.2k

R381

6.8k

1.1

C558

47u 35V

D570

DA2J10100L

-57

B

-57

-56.4

DH750

L800

C828

0.022u

Q805

MSB92T1G

CURRENT DETECT

-0.70

0

C801 220p

R808

R802

6.2k

4.7k

Q800

MN2488-OPY-MK

BOOSTER

58

E

C

B

1.1

C842

47p

R804

R805

100

22k

R806

2.2k

R383

6.8k

Q802

LIMITER

[SBL]

R801

10

C804

0.01u

R807

R815

1.5k

0

SBL +VE

1.1

47k

R818

47k

D800

DA2J10100L

R809

100k

D801

DA2J10100L

R814

R803

0.22

15k

Q801

MP1620-OPY-MK

BOOSTER

-58

C

-1.1

-59-0.7

MSB92T1G

0

CURRENT

DETECT

0

E

SBL -VE

B

C841

R817

R816

560

-0.6

CL800 CL650 CL750 CL600 CL700

2SD2114K

-1.1

0.4

CL801

-1.1

C808

47u 35V

R819

68k

Q804

47p

100

Q803

LIMITER

R650

4.7

2SA1162-G

R568

47k

D550

DA2J10100L

R559

100k

D551

DA2J10100L

R564

15k

R553

0.22

Q551

MP1620-OPY-MK

BOOSTER

-58

E

C

B

-1.1

R566

560

-0.6

CL550 CL850

0.4

CL551

CL552

-1.1

-59-0.7

0

MSB92T1G

CURRENT

DETECT

0

C -VE

R569

68k

Q554

C591

47p

R567

100

Q553

2SD2114K

LIMITER

R850

4.7

MSB92T1G

CURRENT DETECT

C851 220p

R852

4.7k

MN2488-OPY-MK

BOOSTER

58

C

R854

100

Q852

2SA1162-G

LIMITER

L850

C878

0.022u

Q855

Q850

1.1

[SBR][C]

R851

C854

0.01u

-0.70

R865

1.5k

0

R858

6.2k

0

E

SBR +VE

B

C892

47p

R855

22k

R856

2.2k

R382

6.8k

1.1

C858

47u 35V

10

R857

47k

R868

47k

D850

DA2J10100L

R859

100k

D851

DA2J10100L

R864

15k

0

R853

0.22

Q851

MP1620-OPY-MK

BOOSTER

-58

E

C

B

-1.1

R866

560

-0.6

-1.1

0.4

CL851

CL852 CL802 CL652 CL752 CL602 CL702

-1.1

-59-0.7

MSB92T1G

CURRENT

DETECT

0

SBR -VE

C891

R867

2SD2114K

R869

68k

Q854

47p

100

Q853

LIMITER

R800

4.7

2SA1162-G

Q570, Q620, Q670, Q720, Q770, Q820, Q870

D820

-56.4

-57

B

C820

3300p

R827

2.2k

DA2J10100L

R829

56k

Q820

0.1

0.6

B

E

CC

C831

-57

0.1

4p

R826

470

R825

2.2k

D821

D822

C881

Q870

0.6

4p

R879

56k

B

0.1

R876

470

R875

2.2k

D871

DA2J10100L

D872

DA2J10100L

E

CC

3300p

0.1

C870

R877

-57

2.2k

D870

DA2J10100L

-57

R870

B

C886

47p

-56.4

R878

4.7k

270

C862

100p

R861

68k

C860

10u 50V

R873

220

59

R871

4.7k

R872

4.7k

16.3

KTC3206-Y PWR AMP.

-57

KTC3206-Y

PWR AMP.

-57

R860

1k

Q874

Q875

Q872

KTA1024-Y

PWR AMP.

-1.1

-56.4

R863

R874

220

59

1.1

C885

47p

C882

4p

R862

68k

2.2k C863

220u 10V

R823

R824

220

59

1.1

Q822 KTA1024-Y PWR AMP.

Q824

KTC3206-Y

PWR AMP.

Q825

KTC3206-Y

PWR AMP.

-1.1

59

R821

4.7k

R822

4.7k

-56.4

16.3

-57

DA2J10100L

R820

4.7k

C836

47p

R828

270

C835 47p

C812

C832

100p R811

R810

1k C810

10u 50V

4p

R812

68k

R813

2.2k

C813

220u 10V

[SBL][SBR]

R573

R574

220

59

C564

R561

C560

100p

68k

R560

R571

4.7k

R572

4.7k

16.3

Q574 KTC3206-Y PWR AMP.

-57

KTC3206-Y

PWR AMP.

-57

1k

KTA1024-Y PWR AMP.

Q575

-56.4

Q572

-1.1

1.1

C585

47p

C582

4p

R562

68k

R563

2.2k C563

220u 10V

C586

R570

47p

R578

4.7k

270

10u 50V

[C] [FR] [FL]

L650

C678

0.022u

Q655

MSB92T1G

CURRENT DETECT

0

C651 220p

R658

R652

6.2k

4.7k

Q650

MN2488-OPY-MK

BOOSTER

58

E

C

B

1.1

C692

47p

R654

R655

100

R656

R384

Q652

LIMITER

HN4A06J-GRBL (TE85R)

PWR AMP.

R679

56k

Q670

0.6

B

E

C681

0.1

4p

R676

470

R675

2.2k

D671

DA2J10100L

D672

DA2J10100L

-0.70

22k

2.2k

6.8k

1.1

0.1

CC

[FR]

R651

10

C654

0.01u

R657

R665

1.5k

0

FR +VE

C658

47u 35V

-57

C670

3300p

R677

2.2k

47k

R653

0.22

0.4

-1.1

D670

DA2J10100L

-57

B

-56.4

R663

2.2k

C663

220u 10V

D650

DA2J10100L

R659

100k

R664

15k

MP1620-OPY-MK

-58

-0.6

0.4

CL651

R670

4.7k

C686

47p

R678

270

R668

47k

D651

Q651

BOOSTER

C

-1.1

R673

220

59

R671

4.7k

R672

4.7k

16.3

KTC3206-Y PWR AMP.

-57

KTC3206-Y PWR AMP.

-57

C682

4p

R662

68k

C660

10u 50V

DA2J10100L

E

B

R666

560

-1.1

Q674

Q675

R660

R669

-59-0.7

Q654

MSB92T1G

0

CURRENT

DETECT

0

FR -VE

C691

47p

R667

100

2SD2114K

LIMITER

R674

220

59

1.1

Q672 KTA1024-Y PWR AMP.

-1.1

-56.4

C685 47p

1k

68k

R661

Q653

C662 100p

68k

SR_OUT

R750

4.7

MSB92T1G

CURRENT DETECT

C751 220p

R752

4.7k

MN2488-OPY-MK

BOOSTER

58

C

R754

100

Q752

2SA1162-G

LIMITER

C635 47p

C612

100p

R611

68k

L750

C778

0.022u

Q755

0

Q750

E

B

1.1

C792

R624

220

59

1.1

Q622 KTA1024-Y PWR AMP.

R610

1k

C610

10u 50V

[SR]

R751

10

C754

0.01u

R757

-0.70

R765

1.5k

R758

6.2k

0

SR +VE

47p

R755

22k

R756

2.2k

R385

6.8k

1.1

Q624

KTC3206-Y

PWR AMP.

Q625

KTC3206-Y

PWR AMP.

-1.1

C632

4p

R612

68k

47k

R623

220

59

R621

R622

4.7k

-56.4

0.4

-1.1

4.7k

16.3

R759 100k

R764

R753

0.22

-57

R613

2.2k

220u 10V

D750

15k

-58

CL751

DA2J10100L

R620

4.7k

R628

270

C613

R768

47k

DA2J10100L

D751

DA2J10100L

Q751

MP1620-OPY-MK

BOOSTER

E

C

B

-1.1

R766

560

-0.6

-1.1

0.4

C758

47u 35V

D620

-57

BCCB

C636

47p

C620

3300p

-56.4

R627

2.2k

DA2J10100L

-59-0.7

0

0.1

-57

D621

D622

R769

68k

Q754

MSB92T1G

CURRENT

DETECT

0

SR -VE

C791

47p

R767

100

Q753

2SD2114K

LIMITER

R629

56k

E

0.1

R626

470

R625

2.2k

R600

4.7

CURRENT DETECT

MN2488-OPY-MK

58

Q602

2SA1162-G

LIMITER

Q620

0.6

C631

4p

C628

0.022u

Q605

MSB92T1G

C601 220p

R602

4.7k

Q600

BOOSTER

C

R604

100

R543

0.47

L600

1.1

L700

C728

0.022u

Q705

MSB92T1G

CURRENT DETECT

-0.70

0

C701

220p

R708

R702

6.2k

4.7k

Q700

MN2488-OPY-MK

BOOSTER

58

E

C

B

1.1

C742

47p

R704

R705

100

R706

R387

Q702

LIMITER

R774

220

59

1.1

Q772

KTA1024-Y

XX

-1.1

-56.4

C785

47p

C782

4p

R762

68k

R763

2.2k C763

220u 10V

22k

2.2k

6.8k

1.1

[SL]

R701

10

C704

0.01u

R707

R715

1.5k

0

SL +VE

47k

R710

D700

R709 100k

R714

15k

R703

0.22

-58

0.4

CL701

-1.1

R724

220

59

1.1

Q722 KTA1024-Y PWR AMP.

C735 47p

C712 100p

R711

68k

1k

C710

10u 50V

R718

47k

DA2J10100L

D701

DA2J10100L

0

Q701

MP1620-OPY-MK

BOOSTER

E

C

B

-1.1

R716

560

-0.6

-1.1

0.4

C708

47u 35V

R723

220

59

R721

4.7k

R722

4.7k

16.3

Q724 KTC3206-Y PWR AMP.

-57

Q725

KTC3206-Y

PWR AMP.

-57

-1.1

-56.4

C732

4p

R712

68k R713

2.2k

C713

220u 10V

-59-0.7

MSB92T1G

CURRENT

DETECT

0

SL -VE

C741

R717

100

2SD2114K

LIMITER

DA2J10100L

R720

4.7k

C736

47p

R728

270

R719

47p

[FL]

R601

C604

0.01u

-0.70

R615

1.5k

0

R608

6.2k

0

E

FL +VE

B

C642

47p

R605

22k

R606

2.2k

R386

6.8k

1.1

C988

22u

100V

10

R607

C781

47k

4p

Q770

0.6

C987 100V

22u

R609 100k

R614

R603

0.22

0.4

-1.1

R779

56k

B

0.1

R776

R775

2.2k

DA2J10100L

15k

R618

47k

D600

DA2J10100L

MP1620-OPY-MK

BOOSTER

-58

C

-0.6

0.4

CL601

C618

47u 35V

0.1

E

CC

-57

C770 3300p

470

R777

2.2k

D771

D772

R542

0.47

D601

DA2J10100L

0

Q601

E

B

-1.1

R616

560

-1.1

D770

DA2J10100L

-57

B

-56.4

R619

68k

-59-0.7

Q604 MSB92T1G CURRENT

DETECT

0

FL -VE

C641

47p

R617

100

Q603

2SD2114K

LIMITER

R770

4.7k

C786

47p

R778

270

C762 100p

R761

C760

10u 50V

R700

R773

220

R771

4.7k R772

4.7k

16.3

KTC3206-Y PWR AMP.

-57

KTC3206-Y

PWR AMP.

-57

68k

R760

1k

4.7

2SA1162-G

59

Q774

Q775

[SL][SR]

68k

Q704

Q703

D720

-56.4

-57

BCCB

-57

C720 3300p

R727

2.2k

DA2J10100L

0.1

D721

D722

E

R726

R725

1 2 3 4 5 6 7 8 9

10 11 12 13 14

R729

56k

0.1

470

2.2k

>002S

MAIN

BOARD

(2/7)

(Page 25)

Q720

0.6

C731

4p

STR-DH550/DH750

15 16

17 19 2018 21

MAIN BOARD (3/7)

>003S

(Page 26)

2424

22

23

MAIN BOARD (2/7)

>004S

24 25

(Page 25)

Sony STR-DH550, STR-DH570 Service manual

TABLE OF CONTENTS

SERVICING NOTES

DISASSEMBLY

2-1. CASE (ENTRY)

2-2. FRONT PANEL SECTION

2-3. BACK PANEL SECTION

2-4. MAIN BOARD SECTION

2-5. MAIN BOARD

TEST MODE

FM TUNER CHECK

DIAGRAMS

5-1. BLOCK DIAGRAM – ANALOG AUDIO Section –

5-2. BLOCK DIAGRAM – DIGITAL Section –

5-3. BLOCK DIAGRAM – AMP Section –

5-4. BLOCK DIAGRAM – ANALOG VIDEO/USB Section –

5-5. BLOCK DIAGRAM – DIGITAL VIDEO Section –

5-6. BLOCK DIAGRAM – DISPLAY/POWER Section –

5-7. PRINTED WIRING BOARD – MAIN Board (Component Side) – • See page 14 for Circuit Boards Location. • : Uses unleaded solder.

5-8. PRINTED WIRING BOARD – MAIN Board (Conductor Side) – • See page 14 for Circuit Boards Location. • : Uses unleaded solder.

5-9. SCHEMATIC DIAGRAM – MAIN Board (1/7) –