Sony STR-DH720,STR-DH720HP Service Manual

SERVICE MANUAL

Published by Sony EMCS (Malaysia) PG Tec

Sony Corporation

MULTI CHANNEL AV RECEIVER

US Model

STR-DH720/DH720HP

Canadian Model

AEP Model

STR-DH720

STR-DH720/DH720HP

Ver. 1.2 2011.10

9-890-560-03

2011J80-1

©

2011.10

AUDIO POWER SPECIFICATIONS

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

With 8 ohm loads, both channels driven, from

20 – 20,000 Hz; rated 95 watts per channel

minimum RMS power, with no more than 0.09%

total harmonic distortion from 250 milliwatts to

rated output.

Amplifi er section

US model

1)

Minimum RMS Output Power

(8 ohms, 20 Hz – 20 kHz, THD 0.09%)

95 W + 95 W

Stereo Mode Output Power

(8 ohms, 1 kHz, THD 1%)

105 W + 105 W

Surround Mode Output Power

2)

(8 ohms, 1 kHz, THD 10%)

140 W per channel

CND model

1)

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%)

105 W + 105 W

Surround Mode Output Power

2)

(8 ohms, 1 kHz, THD 10%)

140 W per channel

ECE model

1)

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

2)

(8 ohms, 1 kHz, THD 10%)

140 W per channel

1)

Measured under the following conditions:

Area Power requirements

US, CND 120 V AC, 60 Hz

ECE 230 V AC, 50 Hz

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 – 70 kHz,

+0.5/–2 dB (with

sound fi eld and

equalizer bypassed)

Input

Analog Sensitivity: 500 mV/

50 kohms

S/N

3)

: 96 dB

(A, 500 mV

4)

)

Digital (Coaxial) Impedance: 75 ohms

S/N: 100 dB

(A, 20 kHz LPF)

Digital (Optical) S/N: 100 dB

(A, 20 kHz LPF)

Output (Analog)

AUDIO OUT Voltage: 500 mV/

1 kohms

SUBWOOFER Voltage: 2 V/1 kohm

Equalizer

Gain levels ±6 dB, 1 dB step

3)

INPUT SHORT (with sound fi eld and equalizer

bypassed).

4)

Weighted network, input level.

SPECIFICATIONS

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

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

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

5,956,674; 5,974,380; 5,978,762; 6,226,616; 6,487,535; 7,212,872;
7,333,929; 7,392,195; 7,272,567 & other U.S. and worldwide
patents issued & pending. DTS and the Symbol are registered
trademarks, & DTS HD, DTS-HD Master Audio, and the DTS logos
are trademarks of DTS, Inc. Product includes software.© DTS, Inc.
All Rights Reserved.

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

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

“BRAVIA” is a trademark of Sony Corporation.

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

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

iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks
of Apple Inc., registered in the U.S. and other countries.

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

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

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

“WALKMAN” is a registered trademark of Sony Corporation.

“MICROVAULT” is a trademark of Sony Corporation.

Windows Media is either a registered trademark or trademark of Microsoft
Corporation in the United States and/or other countries.

– Continued on next page –

STR-DH720/DH720HP

2

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!

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 COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉ­MENTS PUBLIÉS PAR SONY.

FM tuner section

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

AM tuner section

Tuning range

Area Tuning scale

10 kHz step 9 kHz step

US, CND 530 kHz – 531 kHz –

1,710 kHz 1,710 kHz

ECE – 531 kHz –

1,602 kHz

Antenna (aerial) Loop antenna (aerial)
Intermediate frequency
450 kHz

Video section

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

P

B

: 0.7 Vp-p, 75 ohms

P

R

: 0.7 Vp-p, 75 ohms

80 MHz HD Pass Through

iPhone/iPod section

DC 5V 1.0 A MAX

USB section

Supported bit rate* MP3 (MPEG 1 Audio Layer-3):

32 kbps - 320 kbps,VBR
WMA: 48 kbps - 192 kbps
AAC: 48 kbps - 320 kbps
*Compatibility with all encoding/writing software,

recording devices and recording media cannot be

guarantee.
Transfer speed Full-speed
Supported USB device
Mass Storage Class
Maximum current 500 mA

General

Power requirements

Area code Power requirements

US, CND 120 V AC, 60 Hz

ECE 230 V AC, 50/60 Hz

Power consumption 240 W
Power consumption (during standby mode)

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

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

430 mm × 157.5 mm × 322 mm (17 in × 6 1/4 in ×
12 3/4 in) including projecting parts and controls

Mass (Approx.) 8.0 kg (17 lb 11 oz)

Design and specifi cations are subject to change without notice.

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

Supplied accessories

• Operating Instructions

• Quick Setup Guide

• GUI Menu List

• FM wire antenna (aerial) (1)

• AM loop antenna (aerial) (1)

• Remote commander (1)
– RM-AAU106 (US and CND models only)
– RM-AAU107 (Other models)

• R6 (size AA) batteries (2)

• Optimizer microphone (ECM-AC2) (1)

• Abbreviation

CND : Canadian model
ECE : Continental European, East European and Russian models

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)

1.5 kΩ0.15 μF

AC
voltmeter
(0.75 V)

To Exposed Metal
Parts on Set

Earth Ground

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

STR-DH720/DH720HP

3

TABLE OF CONTENTS

1. SERVICING NOTES

...................................................... 3

2. DISASSEMBLY

2-1. Case ..................................................................................... 5

2-2. D-VIDEO Board ................................................................. 6

2-3. Front Panel Section ............................................................. 6

2-4. Back Panel Section ............................................................. 7

2-5. DIGITAL Board .................................................................. 7

2-6. MAIN Board Section .......................................................... 8

2-7. MAIN Board ....................................................................... 8

3. TEST MODE ..................................................................... 9

4. ELECTRICAL ADJUSTMENT ....................................11

5. DIAGRAMS

5-1. Block Diagram – TUNER/AUDIO Section – ................... 13

5-2. Block Diagram – DIGITAL Section – .............................. 14

5-3. Block Diagram – STANDBY-A VIDEO PC Section–...... 15

5-4. Block Diagram – D-VIDEO Section – ............................. 16

5-5. Block Diagram – KEY/DISPLAY/USB Section – ........... 17

5-6. Block Diagram – POWER KEY Section – ....................... 18

5-7. Printed Wiring Board – DIGITAL Board (Side A) – ........ 20

5-8. Printed Wiring Board – DIGITAL Board (Side B) – ........ 21

5-9. Schematic Diagram – DIGITAL Board (1/4) –................. 22

5-10. Schematic Diagram – DIGITAL Board (2/4) –................. 23

5-11. Schematic Diagram – DIGITAL Board (3/4) –................. 24

5-12. Schematic Diagram – DIGITAL Board (4/4) –................. 25

5-13. Printed Wiring Board – MAIN Board – ............................ 26

5-14. Schematic Diagram – MAIN Board (1/4) – ...................... 27

5-15. Schematic Diagram – MAIN Board (2/4) – ...................... 28

5-16. Schematic Diagram – MAIN Board (3/4) – ...................... 29

5-17. Schematic Diagram – MAIN Board (4/4) – ...................... 30

5-18. Printed Wiring Board – D-VIDEO Board (Side A) – ....... 31

5-19. Printed Wiring Board – D-VIDEO Board (Side B) – ....... 32

5-20. Schematic Diagram – D-VIDEO Board (1/4) – ................ 33

5-21. Schematic Diagram – D-VIDEO Board (2/4) – ................ 34

5-22. Schematic Diagram – D-VIDEO Board (3/4) – ................ 35

5-23. Schematic Diagram – D-VIDEO Board (4/4) – ................ 36

5-24. Printed Wiring Board –

STANDBY-A VIDEO PC Board – ................................... 37

5-25. Schematic Diagram –

STANDBY-A VIDEO PC Board – ................................... 38

5-26. Printed Wiring Boards – PANEL Section – ...................... 39

5-27. Schematic Diagram – PANEL Section – .......................... 40

5-28. Printed Wiring Board – DCDC Board – ........................... 41

5-29. Schematic Diagram – DCDC Board – .............................. 42

5-30. Printed Wiring Board – USB Board – .............................. 43

5-31. Schematic Diagram– USB Board – .................................. 44

5-32. Printed Wiring Board – HEADPHONE Board – .............. 45

5-33. Schematic Diagram – HEADPHONE Board – ................. 45

5-34. Printed Wiring Board – TEMP-SENSOR Board – ........... 45

5-35. Schematic Diagram – TEMP-SENSOR Board – .............. 45

6. EXPLODED VIEWS

6-1. Case Section ...................................................................... 65

6-2. DCDC Board ..................................................................... 66

6-3. Front Panel Section ........................................................... 67

6-4. Back Panel Section ........................................................... 68

6-5. Chassis Section ................................................................. 69

7. ELECTRICAL PARTS LIST ..................................... 70

SECTION 1

SERVICING NOTES

Part No.

MODEL IDENTIFICATION
–BACK PANEL–

Model Part No.

STR-DH720: US 4-261-825-3

[]

STR-DH720: Canadian 4-261-825-4

[]

STR-DH720: AEP 4-261-825-5

[]

STR-DH720HP: US 4-261-825-7

[]

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
lead-free 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)

: 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 confi dentielles.
Suivre scrupuleusement les instructions chaque fois qu’un com­posant est remplacé et / ou réparé.

Note: Refer to supplement-1 for the printed wiring board,

schematic diagram and electrical parts list of D-VIDEO
board (Suffix-21), DIGITAL board (Suffix-21), DCDC
board (Suffi x-21), MAIN board (Suffi x-24) and STANDBY-
AVIDEO MT PC Board (Suffi x-24).

Ver. 1.2

STR-DH720/DH720HP

4

NOTE OF REPLACING THE IC1500 AND IC1600 ON THE
DCDC BOARD

IC1500 and IC1600 on the DCDC board cannot exchange with
single. When these parts on the DCDC board are damaged,
exchange the entire mounted board.

NOTE OF REPLACING THE IC2106 ON THE DIGITAL
BOARD

IC2106 on the DIGITAL board cannot exchange with single.
When this part on the DIGITAL board is damaged, exchange the
entire mounted board.

NOTE OF REPLACING THE IC3500 AND IC3501 ON THE
D-VIDEO BOARD

IC3500 and IC3501 on the D-VIDEO board cannot exchange with
single. When these parts on the D-VIDEO board are damaged,
exchange the entire mounted board.

NOTICE OF BOARD VERSION CHECK

D-VIDEO board (Suffi x-11), DIGITAL board (Suffi x-11), DCDC
board (Suffix-11), MAIN board (Suffix-13) and STANDBY-A
VIDEO PC board (Suffi x-13) is synchronised. When any of the
mounted board replacement is necessary, check the defective
board version and order the same version of mounted board in
part list.

MICOM (IC2105) ON DIGITAL BOARD SERVICE POSITION

• In checking the MICOM (IC2105) on the DIGITAL board,
prepare a set of extension jigs (A-1825-238-A) which consists
of two extension cables.

Connect jig to the DCDC board (CN1501 (6P))
and D-VIDEO board (CN3510 (6P)).

Connect jig to the DIGITAL board (CN2513 (20P)),
(CN2603 (8P)) and D-VIDEO board (CN3003 (20P)),
(CN3004 (8P)).

DCDC board

D-VIDEO board

DIGITAL board

Extension jigs
(A-1825-238-A)

Ver. 1.2

STR-DH720/DH720HP

5

SECTION 2

DISASSEMBLY

Note:

This set can be disassemble according to the following sequence.

Note:

Follow the disassembly procedure in the numerical order given.

2-1. CASE

2-2. D-VIDEO BOARD
(Page 6)

2-3. FRONT PANEL SECTION
(Page 6)

2-6. MAIN BOARD SECTION
(Page 8)

2-7. MAIN BOARD
(Page 8)

2-4. BACK PANEL SECTION
(Page 7)

2-5. DIGITAL BOARD
(Page 7)

2-1. CASE
(Page 5)

SET

3 two screws
(+BVTP 3 u 8)

4

4

2 two screws

(+BVST 4 u 8)

5 case

1 two screws

(+BVST 4 u 8)

STR-DH720/DH720HP

6

2-2. D-VIDEO BOARD

2-3. FRONT PANEL SECTION

1 wire (flat type) (25 core) (CN2116)

3 CN391 (5P)

2 cushion (R)

7 shield, sub chassis

5 seven screws

(+BVTP 3 u 8)

4 one screw
(+BVTP 3 u 8)

4 one screw
(+BVTP 3 u 8)

6 claw

6 claw

8 front panel section

5 one screw

(+BVTP 3 u 8)

8 CN3510 (6P)

9 CN3003 (20P)

9 CN3004 (8P)

0 D-VIDEO board

qa CN1500 (7P)

qs DCDC board

6 five screws

(+B 3 u 5)

C

B

C

B

1 cut the cable tie

2 CN3007 (13P)

3 CN3200 (8P)

4 one screw

(+BVTP 3 u 8)

7 bracket holder

Ver. 1.2

STR-DH720/DH720HP

7

2-4. BACK PANEL SECTION

2-5. DIGITAL BOARD

1 cut the cable tie

2 CNP902 (2P)

3 CN906 (4P)

5 five screws

(+BVTP 3 u 8)

4 wire (flat type)
(9 core) (CN2003)
(US, CND)

7 eight screws
(+BVTP 3 u 8)

8 CN271 (14P)

6 three screws

(+BVTP 3 u 8)

9 back panel section

1 CN2501 (4P)

2 CN2114 (19P)

2 CN2105 (19P)

3 DIGITAL board

STR-DH720/DH720HP

8

2-6. MAIN BOARD SECTION

3 heatsink block

2 two screws

(+BVTP 3 u 8)

4 MAIN board

1 Remove the

forty-two solders.

2-7. MAIN BOARD

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

4 one screw
(+BVTP 3 u 8)

6 two screws
(+BVTP 3 u 8)

7 MAIN board section

5 two screws

(+BVTP 3 u 8)

1 CNP920 (5P)

3 LOCK board

2 CNP930 (5P)

STR-DH720/DH720HP

9

SECTION 3

TEST MODE

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

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

AM channel step.

* Procedure:

1. Press the [

?/1

] button to turn on the main power.

2.

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

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 “9k STEP” or “10k STEP”.

6. After a few second, “AM 531

kHz

” or “AM 530

kHz

” appears,

select the desire 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 +] and the [DIMMER] but-

tons simultaneously, press the [

?/1

] button to turn on the main

power.

1. ALL segments light on.

LH RH SW

L RC

SBL SBRSB

SL SRS

xzIIPL

D + EX

LFE

COAX

HDMI

OPT

-ES
MSTR

96/24

HI RES

NEO:6

LBR

S-AIR
LPCM

TrueH D

SLEEP

D.RANGE

AAC ST

dB RDS
k Hz m

MHz ft.

DTS

DTS-HD

2. Press the [DISPLAY] control, confi rm display.

LH RH SW

LRC

SBL SBRSB

SL

SRS

zPL

+

LFE

COAX

HDMI

OPT

-ES

MSTR

96/24

HI RES

NEO:6

LBR

S-AIR

LPCM

TrueH D

SLEEP

D.RANGE

AAC

dB
k m

ft.

DTS

DTS-HD

3. Press the [DISPLAY] control, confi rm display.

LH RH SW

L R

SBL SBR

S

xIIPL

D EX

LFE

COAX

HDMI

OPT

-ES

MSTR

96/24

HI RES

NEO:6

LBR

S-AIR

LPCM

TrueH D

SLEEP

D.RANGE

ST

RDS

Hz

MHz

DTS

DTS-HD

4. Press the [DISPLAY] 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:

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

?/1

] button

to 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 the [TUNING MODE] and [DISPLAY] but-

tons, press the [

?/1

] button to turn on the main power.

2. The message “H7 ** MX.XX” appears.

**: Destination
X.XX: Software version

Each time the [DISPLAY] button is pressed, “H.VER X.XX”,

“S.VER X.XX” and “F.VER X.XX” appear in this order, and
returns to the “H7 ** MX.XX” display.

KEY CHECK MODE

* Button check
* Procedure:

1. While depressing the [TUNING +] and the [MUTING] but­tons simultaneously, press the [

?/1

] button to turn on the

main power.

2. Either the message “REST 14” appears.

Every pressing of any button other than the [

?/1

] counts
down 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 [TUNING MODE] and the [MOVIE]
buttons simultaneously, press the [

?/1

] button to turn on the

main 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 the [TUNING MODE] and [DIMMER] 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 off.

(b) ALL CLEAR INITIALIZE
* Procedure:

1. While pressing the [TUNING MODE] and [MUTING] 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 [

?/1

] button for 5 seconds.

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 depressing the [INPUT MODE] and the [A.F.D.] but­tons simultaneously, press the [

?/1

] button to turn on the main

power.

2. “PROT OFF” appears and switch on the set.

STR-DH720/DH720HP

10

HISTORY MODE

The state that the set is used is memorized.
* Procedure:

1. While pressing the [INPUT MODE] and [MUSIC] buttons,
press the [

?/1

] button to turn on the power and “HISTORY”

is displayed.

2. Each time the [ r ] [ R ] key of remote commander is pressed,
the item is switched in order as follows.

Items Display

Protector count COUNT XX

Total single power on time XXXXXHXX 01

Sound fi eld SND FLD

Input function FUNCTION

Input mode INP MODE

Digital select DIG IN

Stream information STREAM

Signal confi guration CO XXXXX

Headphones HP XXX

Volume VOL XX

Bass BASS XXX

Treble TREB XXX

Level FL/FR F XXXXXX

Level SL/SR S XXXXXX

Level CT/SW CWXXXXXX

Level BL/BR B XXXXXX

Level LH/RH H XXXXXX

Total power on time XXXXXHXX 02

Muting MUTE XXX

Power on counter
(Rebox test mode)

REBX.XXXX

Protector Type PROTXXXX

Temperature record TEM XXXX

DCAC TEST MODE

* Procedure:

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

2. The message “SOURCE” or “MIC” appears.

Repeat step 1 to toggle between “SOURCE” and “MIC”.
SOURCE: normal mode
MIC: mode that output audio from mic input

USB UPDATE TEST MODE

To update Main MCU, Video MCU, DSP serial fl ash and Hudson
II software through USB.
* Procedure:

1. Plug in USB device in power off condition.

2. While pressing the [TONE MODE] and the [DISPLAY]
buttons, 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 to check whether USB
update is necessary or not.
* Procedure:

1. While pressing [TONE 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:
(MAIN ver. + DSP ver. + HDMI ver. + FARO ver. + 6)/10 =

Displayed version

MAIN = 1.02, DSP = 1.01, HDMI = 1.00, FARO = 1.03
↓
(1.02 + 1.01 + 1.00 + 1.03 + 6)/10 = 1.006

1.006 = X.XXX

STR-DH720/DH720HP

11

SECTION 4

ELECTRICAL ADJUSTMENT

VIDEO CALIBRATION ADJUSTMENT

Adjustment to decide the standard of the video input signal.

Note: After replacing DIGITAL VIDEO board, or after “RESET” of the
special menu mode is executed, perform this adjustment.

1. Adjustment jig

The color pattern generator that can output 100% in NTSC/PAL/
HD color bar signal to the component and the composite at the
same time is necessary for the adjustment.
When there is no color pattern generator, it is possible to substitute
it by the Blu-ray Disc player that can output the component
terminal and the video terminal at the same time (Substitution
model name example: BDP-S350).
However, please do the following signal output confi rmation with
the oscilloscope beforehand when substituting it with the Blu-ray
Disc player.

2. Video calibration adjustment
2-1. Connection

color pattern

generator

or

Blu-ray

Disc player

set

HDMI TV

OUT

ANALOG VIDEO board
COMPONENT VIDEO
SAT/CATV (IN2)
SAT/CATV VIDEO IN jack

2-2. Procedure for color pattern generator

1. It connects of step 2-1, and then turn on the main power.

2. “SAT/CATV” is selected by using [INPUT SELECTOR] dial.

3. Input NTSC color bars signal from the color pattern generator.

4. Press the [

?/1

] button to turn off the main power.

5.

While pressing the [MOVIE] and [SPEAKERS] buttons, press
the [

?/1

] button to turn on the main power. When correctly

entering the test mode “FIN_ _ _” is displayed (press the
buttons again until the message appear).

6. The NTSC signal adjustment is begun when press the cross
(center of cursor) button of remote commander, and the display
changes from “N-MWX_ _ _” to “N-MWOCDV” little by little.

Finally, the display returns to the display of “FINN _ _”.

7. Input PAL color bars signal from the color pattern generator.

8. Perform step 6 to 7 for the PAL signal adjustment.

9. Input HD color bars signal (720p or 1080i) from the color
pattern generator.

10. Perform step 6 to 7 for the HD signal adjustment.

11. Then turn off the main power.

2-3. Procedure for Blu-ray Disc player

1. It connects of step 2-1, and then turn on the main power of set
and Blu-ray Disc player.

2. “SAT/CATV” is selected by using [INPUT SELECTOR] dial.

3. Press the OPEN/CLOSE button of the Blu-ray Disc player, and
DVD test disc “HLX-504 (Part No. J-6090-088-A)” or “HLX­513 (Part No. J-2501-305-A)” is insert. The disc playback
automatically becomes start “Main Menu” is display.

4. “1.Color Bar 100%” of “1.Video Signal” is reproduced, and
100% in the color bar is displayed in the TV monitor, playing
the Blu-ray Disc player is pause playback.

5. Press the [

?/1

] button to turn off the main power of the set.

6.

While pressing the [MOVIE] and [SPEAKERS] buttons, press
the [

?/1

] button to turn on the main power of the set. When

correctly entering the test mode “FIN_ _ _” is displayed
(press the buttons again until the message appear).

7. The NTSC signal adjustment is begun when press the cross
(center of cursor) button of remote commander, and the display
changes from “N-MWX_ _ _” to “N-MWOCDV” little by little.

Finally, the display returns to the display of “FINN _ _”.

8. Press the OPEN/CLOSE button of the Blu-ray Disc player, and
change to DVD test disc “HLX-506 (Part No. J-6090-077-A)”
or “HLX-507 (Part No. J-6090-078-A)”. The disc playback
automatically becomes start “Main Menu” is display.

9. “1.Color Bar 100%” of “1.Video Signal” is reproduced, and
100% in the color bar is displayed in the TV monitor, playing
the Blu-ray Disc player is pause playback.

10. The PAL signal adjustment is begun when press the cross
(center of cursor) button of remote commander. Finally, the
display returns to the display of “FINN P _”.

11. Press the OPEN/CLOSE button of the Blu-ray Disc player, and
change to DVD test disc “HLX-104 (Part No. J-6090-199-A)”.
The disc playback automatically becomes start “Main Menu”
is display.

12. “59.94Hz, 1080i” → “1.Video Signal” → “1.Color Bar 100%”
is selected, and 100% in the color bar is displayed in the TV
monitor, playing the Blu-ray Disc player is pause playback.

13. The video output of the Blu-ray Disc player is switched 1080i
(The output from the component terminal of the Blu-ray Disc
player becomes 1080i output).

14. The HD signal adjustment is begun when press the cross
(center of cursor) button of remote commander. Finally, the
display returns to the display of “FINN P N”.

15. Then turn off the main power.

STR-DH720/DH720HP

12

FM AUTO STOP CHECK

generator

OUT (75 Ω)

set

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.”

STR-DH720/DH720HP

STR-DH720/DH720HP

1313

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

SECTION 5
DIAGRAMS

C-CH

SR-CH

FR-CH

SL-CH

FL-CH

R-IN

L-IN

SW
SEL

C

SEL

SB

SEL

SL

SEL

R-CH

INR2

INL2

INL3

INR3

R-CH

R-CH

DIR

FUNCTION SELECT

IC400

VCCVEE

+7V

SEL
SW

MCU

I/F

-7V

SW OUT

SBL

SBR

C OUT

SL OUT

FL OUT

8

21

23

SYSTEM
CONTROL
IC2105 (1/5)

AUDIO AMP

IC101

TUNER_LAT

9

TUNER_MOSI

10

TUNER_CLK

EVOL_DATA

DCAC_MUTE

EVOL_CLK

TUNER_SD

TUNER_MISO

97
96

41

57

58

12 8

10

62

11

59
60

75

14

13

18

17

SBR-CH

R-CH

19

SW-CH

16

7166 70 68 69

SR OUT

FR OUT

72 73 67

48
47
52
51
42
41
46
45

SBL-CH

20

15

76

25

26

L

SEL

5

1

OP AMP

IC4121

5 3

1
2

617

6

1OUT

2+

AM

TN1

FM/AM TUNER UNIT

L-CH

US, CND

SD

CE

DO

DI

CLK

TU+9V

FM 75ȍ

COAXIAL

ANTENNA

R-CH

J401 (1/2)

J409

-1 -2 -4 -5

-4 -5 -7 -8

J4100

AUTO CAL

MIC

J401 (2/2)

-1 -2

SA-CD/CD
AUDIO IN

L R

TV

AUDIO IN

L R

J101 (1/2)

VIDEO 2 IN

AUDIO

L R

L R

VIDEO 1
AUDIO IN

L R

SAT/CATV

AUDIO IN

L R

VIDEO 1

AUDIO OUT

11

TUNER_RDS_CLK

22

TUNER_RDSDATA

ECE

AM

TN1

FM/AM TUNER UNIT

L-CH

SD

CE

DO

DI

CLK

TU+9V

FM 75ȍ

COAXIAL

ANTENNA

R-CH

RDS INT

RDS DATA

6LJQDOSDWK

: TUNER (FM/AM)

: VIDEO (AUDIO)

: CD (ANALOG)

: TUNER

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

$EEUHYLDWLRQ

 &1' &DQDGLDQPRGHO
 (&( &RQWLQHQWDO(XURSHDQ
   (DVW(XURSHDQ
   DQG5XVVLDQPRGHOV

DIGITAL
SECTION
(Page 14)

DIGITAL
SECTION
(Page 14)

POWER KEY

SECTION
(Page 18)

MIC MUTE

DRIVER

Q4121 - Q4123

A

B

C

STR-DH720/DH720HP

STR-DH720/DH720HP

1414

5-2. BLOCK DIAGRAM – DIGITAL Section –

55
56
57

DSP_MISO
DSP_MOSI

DSP_SPICLK

TUNER/

AUDIO
SECTION
(Page 13)

C

D-VIDEO
SECTION
(Page 16)

D

TUNER/

AUDIO
SECTION
(Page 13)

A

L-IN

R-IN

3 - 5

17 - 19

12 - 14

75, 97,103

6, 8 -10

74, 95,101

6LJQDOSDWK

: TUNER (FM/AM)

: DVD (DIGITAL)

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

R-CH

COAXIAL

BD/DVD IN

DIGITAL

(ASSIGNABLE)

OPTICAL

IN

TV

J2301

OPTICAL

SAT/CATV

IN

X2800
25MHz

CN2513

9

10

7
8

11
12
13
14
16
18

CEC DATA

SWITCH

1

482047

73

94

86

X2801

0+]

CLKIN

SBL/SBR_OUT

SL/SR_OUT

C/SW1_OUT

L/R_OUT

24

XTAL2

25

92

BCLK_OUT

MCLK_IN

98

LRCLK_OUT

SPICLK

Y0

B0

Y3
Y1

SEL

MOSI

MISO

IRQ/GPIO

FLAG1

FLAG2

99

70 71 68

40

39

88 89

2529 24

INPUT

DATA

DEMODULATOR

3D3E'(7(&7,21 LOCK

DETECTION

MICROPROCESSOR

I/F

&ELW'(7(&7,21

18

1

OUT

DIGITAL OPTICAL

RECEIVE

IC2352

DIGITAL AUDIO

INTERFACE RECEIVER

IC2006 (1/2)

23

WAVE SHAPER

IC2303

IC2010

24

9

REG

9

VDDI

9

VDDE

9

TEMP_SENSOR_1

VDD

9

9

+5V REG

IC2421

+5V

+7VVOUT VIN

DSP

IC2801

COM_CLK

COM_DATA

MC/SCL

MDI/SDA

33

31

TH251

TH252

26

TEMP_SENSOR_2

27

XTO

RXIN2/

'9'B&RD[LDO,Q

RXIN4/TV OPT IN

LRCK

1

OUT

IN2 OUT3

DIGITAL OPTICAL

RECEIVE

IC2351

32

RXIN3/
SAT/CATV OPT IN

XTI

SYSTEM

CONTROL

IC2105 (2/5)

1114

94

95

MUTE

LATCH

MUTE

ML/I2S

12

MC/IWL13MD/DM

DIN3

DIN4/DNC

FL OUT

R-CH

VO3L

VO3R

VO1L

VO1R

VO2L

VO2R

9

26

25

7

2

MCK

3

BCK
LRCK

4

D/A CONVERTER

IC2501

DAC

DIN2

SL OUT

R-CH

22

21

DAC

DIN1

C OUT

23

SW OUT

24

DAC

DAC

DSP

69

RXIN6/HDMI_ARC

RXIN7/HDMI_SPDIF

VINR

VINL

SCKO

IC2005

13

+9V

REG

+9V

+15V

Q2702 - Q2705

134

135

136

13

3

11

10

8

6

4

1

2

10

DAC

VO4L

VO4R

20

19

SBL OUT

8

2

5

1

SCHMITT TRIGGER

IC2009

EEPROM

IC2802

12

4

7
1

3

MUTING
IC2804

3

3

28

47 43

HDMI_CECIN

HDMI_CECOUT

SEL

NPCM

ERROR

INT

88

38

39

40

SCK

SI

SO

A3 Y0

Y3

Y1

Y2

A2

A1

A0

B0

CK

D

Q

SIGNAL SELECTOR

IC2805

MUTE

SWITCH

Q2706

Ver. 1 .1

STR-DH720/DH720HP

STR-DH720/DH720HP

1515

5-3. BLOCK DIAGRAM – STANDBY-A VIDEO PC Section –

14

13

5

7

9

1

75ȍ

DRIVER

6dB AMP

15

75ȍ

DRIVER

6dB AMP

V_COMP_SW2

V_SEL_SW2

V_MUTE
V_SEL_SW1

COMP_SW2

VSEL_2

COMP_DET

V_MUTE_1
VSEL_1

SYSTEM CONTROL

IC2105 (3/5)

-5V

-5V-3

+5V

+5V-3

VOUT1

VOUT2

VIN1

VIN4

VIN3

VIN2

VSEL_2

SW1

2

SW510SW2

INPUT SELECT

IC210

VIDEO AMP

IC203

CH1 IN2

CH2 IN2

CH3 IN2

CH1 IN3

CH2 IN3

CH3 IN3

4

SW2

COMP_SW2

6dB AMP

6dB AMP

6dB AMP

23

PS

V_MUTE_1

COMPONENT VIDEO SELECT

IC220

82
83
84
85

COMP_DET

81

A1P

A4P

C1P
B1P

VIDEO CONTROLLER

IC3201 (1/2)

219
223
221
249

VSEL_1

D204

VIDEO

DETECT

COMP_DET

Q202
Q201

3
5

10

15
13

12

CH1 OUT

CH2 OUT

CH3 OUT

24

22

20

V-1,-2

-5V-3

V+1,+2

+5V-3

75ȍ

DRIVER

75ȍ

DRIVER

75ȍ

DRIVER

4 1V-IN V-OUT

VIDEO 2 IN

VIDEO

Y

P

B

PR

Y

P

B

PR

J220 (1/2)

BD/DVD

(IN 1)

SAT/CATV

(IN 2)

ASSIGNABLE
(INPUT ONLY)

COMPONENT

VIDEO

5

6

7

-1

-2

-3

J211 (1/2)

J210 (1/2)

Y

P

R

PB

J220 (2/2)

MONITOR

OUT

COMPONENT

VIDEO

9

10

11

J210 (2/2)

J211 (2/2)

VIDEO 1

VIDEO IN

SAT/CATV

VIDEO IN

J101 (2/2)

MONITOR

VIDEO OUT

VIDEO 1

VIDEO OUT

-3

-1

-3

-1

6LJQDOSDWK

: VIDEO

STR-DH720/DH720HP

STR-DH720/DH720HP

1616

5-4. BLOCK DIAGRAM – D-VIDEO Section –

125

R1X2+

DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–
CLOCK+
CLOCK–
SCL (5V)
SDA (5V)

HOT PLUG DET

CEC
+5V POWER

DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–
CLOCK+
CLOCK–
SCL (5V)
SDA (5V)

HOT PLUG DET

CEC
+5V POWER

DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–
CLOCK+
CLOCK–
SCL (5V)
SDA (5V)

HOT PLUG DET
CEC
+5V POWER

R1X2­R1X1+
R1X1-

Q0

I

Q35

D0

I

D35

R1X0+
R1X0­R1XC+
R1XC­DSCL1

124
123
122
121
120
119
118
35

134

R2X2+
R2X2­R2X1+
R2X1­R2X0+
R2X0­R2XC+
R2XC-

RESET#

INT

133
132
131
130
129
128
127

DSCL2
DSDA2

39
40

HPD2

R3X2+
R3X2­R3X1+
R3X1­R3X0+
R3X0­R3XC+
R3XC­DSCL3
DSDA3
HPD3

38

TX2+
TX2­TX1+
TX1­TX0+
TX0­TXC+
TXC­DSCL
DSDA
HPD

40
39
37
36
34
33
31
30
46
47
51

DSDA1
HPD1

36
34

DE

73

VSYNC 74

73

HSYNC

75

SCK/DCLK

100

WS/DR0

99

SD0/DL0

101

SD1/DR1

102

SD2/DL1

103

SD3/DR2 104

MCLK

105

SPDIF/DL2

106

GPIO3/MUTEOUT

107

1

DE
VSYNC
HSYNC

DL2

48 CSCL

CSDA49

21

MCLK5DR220DL119DR118DL017DCLK15DR0

16

67

69

12

68
70

28
29

13

R1PWR5V33

R2PWER5V37

R3PWR5V41

IC3500

HDMI RECEIVER

IC3501

HDMI TRANSMITTER (1/2)

RX_RST
RX_INT
CSCL
CSDA

RESET

MD0

TX_5VPWR

39
40
18
16

21
22
23
24

HDMI CONTROLLER

IC3000 (1/3)

IC3501

HDMI TRANSMITTER

(2/2)

IC3201

VIDEO CONTROLLER

(2/2)

4

5

CSDA

CSCL

1

38

DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–
CLOCK+
CLOCK–
SCL (5V)
SDA (5V)

HOT PLUG DET

CEC
+5V POWER

4 2

+3.3V
REG

IC3517

HDMI+3.3V

3.3V

HDMI+5V

+4V

6 1

+1.2V

REG

IC3519

HDMI+1.2V

+4V

1 8

IC3515

HDMI+1.8V

+3.3V

5 4

+1.8V
REG

IC3203

+1.8V

+4V

1 8

+1.8V
REG

IC3210

+1.8V

+6V

IC3516

4 5

+5V
REG

IC3521

143
142
141
140
139
138
137
136
43
44
42

CN3000

232C_IN(VU RX)

232C_OUT(VU TX)

RESET

CNVSS

FLASH

PROGRAMMING

5

3

2

1

96-88,
85-77,
70-62,
59-51

98-90,
86-77,
75-67,
63-56

75-82,
83-92,
93-96,

99-102

(Q28-Q35)
(Q16-Q23)
(Q4-Q7)
(Q8-Q11)

DEN/VOP_FLD

DVS/VOP_VS

XTAL

TCLK

X3201

19.6608MHz

4

5

XTALOUT

XTALIN

X3501
27MHz

23

24

X3000
4MHz

XOUT

MUTE

XIN

5

8

IC3502

SELECTOR

9

HSYNC SELECT

IC3206

D3003

9

D3004

+5V

REG

DATA2+
DATA2–
DATA1+
DATA1–
DATA0+
DATA0–

CLOCK–
SCL (5V)
SDA (5V)

HOT PLUG DET

CEC
+5V POWER

CLOCK+

116
115
114
113
112
111
110
109
31
32
30

29

R0X2+
R0X2­R0X1+
R0X1­R0X0+
R0X0­R0XC+
R0XC­DSCL0
DSDA0
HPD0

R0PWR5V

20

21

CN2513

DIGITAL
SECTION
(Page 14)

8

9

7

10

11

12

13

14

16

1

18

A6

2Q

2

1D

11

3

1CK

7

A7

8

A2

3

A3

4

A4

5

A5

6

A8

9

A1

Y1

Y8

2

IC3004

BUFFER

18

17

16

15

14

13

12

11

3

1

2

6

EEPROM

IC3208

SCL

5

SDA

4

HSYNC SELECT

IC3205

COM

6

A

1

3

Ch0

Ch1

12

USB MEMORY

IC3005

I2C_SCL

13

87

85

I2C_SDA

1

RESET SIGNAL

GENERATOR

IC3003

OUT

4

HSYNC SELECT

IC3204

OUTY

2

1

INB

INA

106

ROM_SCSn/ROM_CSn

109

ROM_SDI/ROM_WEn

108

ROM_SDO/A16/OPM2

107

ROM_SCLK/A17

DHS/VOP_HS

DCLK/VOP_CLK

MSTR_SCLK

MSTR_SDATA

34

64

35

1

4

11

13

14

13

12

11

15

11

13

4

2

9

3A

232OUT_TX

HSYNC_SEL

USB_IP_SCL

USB_IP_SDA

232IN_RX

SEL_USB_UPDATE

USB_UPDATE_RX

USB_UPDATE_TX

SEL_USB_UP_ST

4B
1Y
1A

3Y

SEL

1Y

3A

4B

/ST

RS-232

SELECTOR

IC3001

USB SELECTOR

IC3002

HDMI CONTROLLER

IC3000 (2/3)

1.8V REG

D3201-

D3202

DCCPWR5V

45

EEPROM

IC3207

6SCK

5SI

2SO

1

CE#

CN3503

4
6

1
3

7

9
10
12
15
16
19
13
18

CN3502

4

6

1

3

7

9
10
12
15
16
19
13
18

CN3500

4

6

1

3

7

9
10
12
15
16
19
13
18

TV OUT

ARC

CN3501

4

6

1

3

7

9
10
12
15
16
19
13
18

HDMI
ASSIGNABLE
(INPUT ONLY)

VIDEO 1

SAT/CATV

GAME

CN3504

4
6

1
3

7

9
10
12
15
16
19
13
18

WS10SCK11SD09SD18SD27SD36SPDIF

4

6LJQDOSDWK

: DVD (DIGITAL)

: VIDEO

BD/DVD

D

Ver. 1 .1

STR-DH720/DH720HP

STR-DH720/DH720HP

1717

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

92

FL DISPLAY DRIVER

IC152

14

I

29



31

93

6

7

5

6

40

46

45

51
53

54

X1(X_OUT)

X0(X_IN)

E2P_DATA

E2P_CLK

POWER_KEY

MD2
MD0

RST

SDA

SCL

EEPROM

IC2106

SIRCS

30

FL_DATA

7

DIN

29

FL_LAT

9

STB

31

FL_CLK

8

CLK

GRID1

I

GRID11

SEG1

I

SEG17

VOL_JOG

INPUT_JOG

AD_KEY_2

AD_KEY_1

39

2

REMOTE
CONTROL

SIGNAL

RECEIVER

IC151

OUT

SIRCS

+3.9V DCDC

SYSTEM

CONTROL

IC2105 (4/5)

MD2
MD0
RESET

61
60

FLASH_CLK
SO

59

SI

CLK
SO
SI

12

36

37

RESET SIGNAL GENERATOR

IC2020

42

I

32

TONE_JOG

38

30

VEE

OUTVDD

15

VOUT

7

+IN2OUT2

Q2006

97

HDMI

CONTROLLER

IC3000 (3/3)

REGISTOR CONTROL

IC4102

COMPARATOR

IC4101

DATA PROCESSOR

IC4100

MU_MD0

NC

89

USB_OVC

32

IN2OUT3

LRCK

USB SELECTOR

IC4160

30

RXIN5/USB_SPDIF

DIGITAL AUDIO

INTERFACE RECEIVER

IC2006 (2/2)

84

34

USB-DP

33

40

53

41

USB-DM

XIN-PLL

IRPTO,
KEY-ROW1/MCHNG,
KEY-ROW3/SCL,
KEY-ROW4/SDA

USB_SDA,

USB_SCL,

USB_IPOD_REQ,

USB_MCHNG

XOUT-PLL

8,10,12,13

81,83,88,76

4

IC4161

3.3V

REG

+3.3V

+6V

J4000

iPhone/iPod

5

X2101
4MHz

X4102

16.9344MHz

CN2602

8
9
3

4
5
6

S183

_/1

SW NETWORK

S100-107

SW NETWORK

S108-111,S180-181

T141

CONVERTER

TRANSFORMER

Q141

SWITCHING

TRANSISTOR

EN151

MASTER
VOLUME

2

3

EN181

INPUT

SELECTOR

2

3

EN180

TONE

2

3

ND151

VACUUM

FLUORESCENT

DISPLAY

D141
D142

SWITCHING

DIODE

+3.3V (STBY)

FLASH

PROGRAMMING

3

2

DATA

SWITCH

D4101­D4105

STR-DH720/DH720HP

STR-DH720/DH720HP

1818

5-6. BLOCK DIAGRAM – POWER KEY Section –

6

2

3

DRIVE

PRE DRIVER

IC701

IN 1

+VOUT1

-VOUT2

8

12

11

IN 2

+VOUT2

-VOUT2

FL-CH

FR-CH

FL-CH
FR-CH

SL-CH

SBL-CH

SBR-CH

SR-CH

SL-CH
SR-CH

+3.3V

(STBY)

+5V

-5V

+4V

+6V

-7V

+7V

87

6

2

3

DRIVE

PRE DRIVER

IC601

IN 1

+VOUT1

-VOUT2

8

12

11

IN 2

+VOUT2

-VOUT2

99

80

+5V

(STBY)

-5V

REG

IC202

+3.3V

REG

IC2107

1.1V

(STBY)

23

POWER OPERATION AMP

IC2803

-15V

+15V

+7V
REG

IC350

-7V
REG

IC352

+5V
REG

IC201

+4V
REG

21

IC1500

+6V
REG

21

IC1600

FRONT_SPK_A_RY

HP_RY

SBL-SBR_RY

C/SL-SR_RY

PREOUT_SW_RY

HP_DET

FRONT_SPK_A_RY

PROTECTOR

2

BRIDGEABLE_RY

HP_DET

FUSE_DET(RESERVE)

STOP

79

4

HP_RY

3

100

PREOUT_SW_RY

98

C/SL-SR_RY

FRONT_SPK_A_RY

HP_DET

SBL-SBR_RY

HP_RY

PREOUT_SW_RY

C/SL-SR_RY

SYSTEM
CONTROL

IC2105 (5/5)

PRE

DRIVE

C-CH

6

2

3

DRIVE

PRE DRIVER

IC501

IN 1

+VOUT1

-VOUT2

PRE

DRIVE

SW-CH

PRE

DRIVE

6

2

3

DRIVE

PRE DRIVER

IC801

IN 1

+VOUT1

-VOUT2

8

12

11

IN 2

+VOUT2

-VOUT2

PRE

DRIVE

1

SBL-SBR_RY

4

SIGNAL

SELECTOR

IC2032

PHONES

J790

R

L

L

SUBWOOFER

AUDIO OUT

CENTER

SURROUND

R

TB503

TB504

TB503

J405

FRONT

SPEAKERS

IMPEDANCE

USE 8-16ȍ

F901

POWER TRANSFORMER

(SUB)

T902

AC IN ~

RECT
D921

F912

F913

RY901

D990

F910

F911

F940

F941

RECT

D910-913

RECT
D941

D2303

D2302

D2110

PROTECTOR

D326-327, Q320-321,

Q323-325

POWER AMP

Q701-704,
Q751-754

POWER AMP

Q551-554

POWER AMP

Q601-604,
Q651-654

POWER AMP

Q801-802,
Q503-504,
Q851-854

RY350

RY365

RY301

RY375

RELAY

DRIVER

Q375

RELAY

DRIVER

Q365

RELAY

DRIVER

Q301

RELAY

DRIVER

Q350

RY920

RELAY
DRIVER

Q920

RY355

RELAY

DRIVER

Q355

R

SURROUND BACK/

FRONT HIGH

L

TB502

RY360

RELAY

DRIVER

Q360

CURRENT

DETECT
Q711,712

CURRENT

DETECT
Q761,762

CURRENT

DETECT
Q861,862

CURRENT

DETECT
Q550,555

CURRENT

DETECT
Q611,612

CURRENT

DETECT
Q661,662

CURRENT

DETECT
Q811,812

RELAY

DRIVER

Q901

AC IN

DETECT

Q990

RECT

D993-D994

T901

POWER TRANSFORMER

(MAIN)

6LJQDOSDWK

: TUNER (FM/AM)

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

62 1

UART_SEL

TUNER/

AUDIO
SECTION
(Page 13)

B

STR-DH720/DH720HP

STR-DH720/DH720HP

1919

• Circuit Boards Location

DISPLAY board

USB board

MAIN board

STANDBY-A VIDEO PC board

D-VIDEO board

DIGITAL board

HEADPHONE board

POWER KEY board

DCDC board

TUNER (FM/AM)

TEMP-SENSOR board

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

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 ¼ W or less unless otherwise
specifi ed.

• f : internal component.

• 2 : nonfl ammable resistor.

• 5 : fusible resistor.

• C : panel designation.

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.

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.

For Printed Wiring Boards.

Note:

• X : Parts extracted from the component side.

• f : internal component.

•

: Pattern from the side which enables seeing.

Caution:

Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)

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

• Abbreviation
CND

: Canadian model

ECE : Continental European, East European

and Russian models

• A

: B+ Line.

• B : B– Line.

• Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.
no mark

: FM

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

Voltage variations may be noted due to normal production

tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal production

tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : TUNER (FM/AM)
f : TUNER
L : VIDEO (AUDIO)
E : VIDEO
J : DVD (DIGITAL)
c : CD (ANALOG)

• Abbreviation

CND : Canadian model
ECE : Continental European, East European
and Russian models

STR-DH720/DH720HP

STR-DH720/DH720HP

2020

5-7. PRINTED WIRING BOARD – DIGITAL Board (Side A) –

• See page 19 for Circuit Boards Location. • : Uses unleaded solder.

1

A

B

C

D

E

F

G

H

I

J

K

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

IC2352 IC2351

IC2421

IC2805

IC2501

1

14

1528

IC2106

1

100

30

31

81

80

50

51

IC2105

IC2802

IC2804

133

132

88 45

44

176

89

1

IC2801

IC2020

IC2009

IC2006

1

12

13

24

2536

37

48

IC2803

IC2303

6

15

IC2010

O VCC O VCC

114

CN2103

CN2105

1 191 19

CN2114

20 1

CN2513

10

11

CN2002 (11P)

1

28

9

CN2003 (9P) (US, CND)

R2860

R2861

R2863

R2864

R2865

R2866

R2867

R2868

R2099

C2899

R2872

R2873

R2875

R2876

R2880

R2881

R2882

R2886

R2889

R2891

R2892

R2895

R2897

R2898

R2899

C2101

14

CN2501

C2114

C2119

C2501

C2502

C2503

C2504

C2506

C2507

C2508

C2509

FB2007

C2125

C2127

C2510

R2100

C2511

C2512

R2103

C2514

C2515

C2516

C2517

C2130

R2108

X2800

C2131

X2801

D2302

D2303

D2110

C2909

R2112

R2114

R2116

C2140

R2119

C2912

FB2603

C2913

FB2604

R2311

C2917

C2918

FB2608

C2531

R2509

R2123

L2007

R2124

L2008

FB2031

R2125

FB2801

FB2032

R2511

R2512

R2321

R2322

R2324

R2132

C2351

D2717

FB2043

C2354

C2355

C2358

C2359

R2912

C2361

R2917

R2918

R2919

R2920

R2921

R2923

C2370

R2925

R2928

R2158

R2540

R2159

R2541

R2351

R2930

R2160

R2354

R2356

R2357

R2358

R2938

R2941

R2172

R2173

R2949

R2759

R2957

R2958

R2959

R2960

R2962

R2963

R2197

RB2102

RB2103

RB2104

RB2105

RB2106

RB2107

RB2109

FB2884

FB2885

FB2886

FB2887

FB2889

FB2890

RB2119

FB2891

FB2892

JL2808

JL2809

JL2811

X2101

JL2812

C2011

C2206

C2013

C2208

C2016

C2402

CN2602

19

C2022

C2023

FB2101

C2413

R2007

C2418

C2421

R2011

C2422

C2424

D2018

R2015

FB2501

FB2502

C2814

JL2849

C2815

C2816

C2818

R2601

R2602

C2823

R2607

R2608

R2220

C2825

R2609

C2826

R2417

R2802

R2610

R2612

R2613

R2614

R2421

R2615

R2809

R2616

R2617

R2618

R2619

C2838

C2069

R2620

R2621

R2815

R2622

R2816

C2070

C2264

C2459

C2841

C2072

C2842

R2626

C2267

C2074

C2846
C2847

C2849

R2052

C2270

R2054

R2824

R2825

C2272

C2466

R2826

C2273

C2468

C2274

R2058

C2469

R2059

R2829

C2853

R2250

C2470

C2858

R2831

R2834

R2835

R2837

C2860

R2838

C2861

R2839

C2863

C2864

C2865

C2096

C2866

C2868

R2840
R2842

R2843

R2846

R2847

R2849

C2873

C2874

C2875

C2876

C2877

C2878

C2879

R2851

R2852

R2854

R2855

R2856

R2857

R2858

C2881

C2882

C2883

C2869

18

CN2603

R2929

R2186

25

24

1

2

CN2116

A2001

DIGITAL BOARD
(SIDE A)

X2101

J2301

TV

OPTICAL IN

OPTICAL

SAT/CATV IN

DIGITAL (ASSIGNABLE)

COAXIAL

BD/DVD IN

FLASH

PROGRAMMING

10

11

1

28

9

AM

ANTENNA

)0ȍ

COAXIAL

TUNER
(FM/AM)

(CHASSIS)

CN2003 : 9P (US, CND)

1-883-126-

11

(11)

ECE

C

MAIN

BOARD
CNP410
(Page 26)

D

TEMP-

SENSOR

BOARD

CN250

(Page 45)

E

DISPLAY

BOARD
CNS151

(Page 39)

G

D-VIDEO

BOARD
CN3003

(Page 31)

F

D-VIDEO

BOARD
CN3004

(Page 31)

CN2002 : 11P

A

STANDBY-A

VIDEO PC

BOARD

CN271

(Page 37)

B

MAIN
BOARD
CNP411

(Page 26)

(CHASSIS)

Note 1: IC2106 on the DIGITAL board cannot exchange with

single. When this part on the DIGITAL board is damaged,
exchange the entire mounted board.

Note 2: When the DIGITAL board (Suffi x-11) is replaced, refer

to “NOTICE OF BOARD VERSION CHECK” (page 4).

Ver. 1 .2

STR-DH720/DH720HP

STR-DH720/DH720HP

2121

5-8. PRINTED WIRING BOARD – DIGITAL Board (Side B) –

• See page 19 for Circuit Boards Location. • : Uses unleaded solder.

1

A

B

C

D

E

F

G

H

I

J

K

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

B

E

B

E

B

E

B

E

BE

B

E

R2285

R2878

R2879

C2112

D2104

Q2702

Q2703

Q2704

R2104

Q2705

Q2706

C2905

R2111

C2910

C2721

C2722

D2701

FB2033

R2130

R2131

R2901

D2713

D2714

R2906

R2910

R2914

R2915

R2157

R2931

R2932

R2933

R2741

R2742

R2743

R2744

R2745

R2939

R2746

R2747

R2940

R2946

R2947

R2948

CL2001

CL2002

CL2003

CL2004

CL2005

CL2006

CL2007

R2951

CL2009

R2952

R2953

CL2200

CL2201

CL2203

CL2010

CL2204

CL2011

CL2012

CL2013

CL2014

CL2015

CL2016

CL2017

CL2018

CL2019

CL2210

CL2211

CL2212

CL2213

CL2020

CL2021

CL2022

CL2024

CL2025

CL2027

CL2028

CL2029

CL2030

CL2031

CL2032

CL2038

CL2040

CL2041

JL2021

JL2022

CL2045

CL2046

CL2047

CL2048

CL2049

CL2050

CL2051

CL2052

CL2053

CL2055

CL2056

C2003

CL2058

CL2059

Q2006

CL2061

CL2062

CL2063

CL2064

JL2814

CL2065

JL2815

CL2066

JL2816

CL2067

JL2817

CL2068

JL2818

CL2069

JL2819

C2015

CL2070

JL2820

CL2071

JL2821

CL2072

JL2822

CL2073

JL2823

CL2074

JL2824

CL2075

JL2825

C2021

JL2826

JL2827

JL2828

JL2829

D2003

D2004

CL2080

JL2830

JL2831

R2005

CL2082

JL2832

C2416

CL2083

JL2833

C2417

JL2834

CL2085

JL2835

CL2086

JL2836

CL2087

JL2837

C2033

CL2088

JL2838

JL2839

JL2840

CL2091

JL2841

D2019

CL2092

JL2842

CL2093

JL2843

CL2094

JL2844

CL2095

JL2845

JL2846

CL2097

JL2847

CL2098

JL2848

FB2311

R2211

C2817

C2819

JL2850

JL2851

JL2852

JL2854

C2820

JL2855

C2821

JL2856

C2822

JL2858

C2824

R2415

R2416

C2827

C2828

C2829

R2228

JL2863

R2807

C2830
C2831

JL2866

C2832

JL2868

JL2869

C2835

C2836

C2837

JL2870

JL2871

JL2872

JL2873

JL2874

C2840

JL2875

C2265

JL2876

C2266

JL2877

C2268

C2844

JL2878

C2269

C2845

R2050

C2462

R2053

C2850

C2851

C2852

C2854

C2855

R2251

C2856

C2857

C2859

C2862

C2093

R2841

R2844

C2870

C2871

C2872

R2850

R2853

C2884

IC2032

IC2107

3

12

IC2005

DIGITAL BOARD
(SIDE B)

1-883-126-

11

(11)

STR-DH720/DH720HP

STR-DH720/DH720HP

2222

5-9. SCHEMATIC DIAGRAM – DIGITAL Board (1/4) –

• See page 46 for IC Block Diagrams. • See page 61 to 64 for IC Pin Function Descriptions.

1

A

B

C

D

E

F

G

H

I

J

K

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

DIGITAL BOARD (1/4)

7

8109

6

4

1

5

2

3

3.6

3.3

3.7

1.3

3.3

0

3.3

1.3

1.3

1.3

3.3

1.4

3.3

1.8

3.3

1.3

1.3

0

1.3 3.3 1.8 1.3 2 3.2 1.3 1.8 1.8 1.8 1.3 3.3 1.3 1.3 3.3 1.3 1.2 1.1 3.3 1.3 1.3 3.3 1.3 0 3.3 1.3 3.3 1.3

0

0

0

0

0

0

0

0

0

0

0

0

1.3

1.3

3.3 3.3 1.3 3.3 3.3 3.3 1.3 1.3 3.3 1.8 1.8 1.3 0 3.3 3.3 0 1.33.21.3

0

3.3

3.3

3.3

3.3

0

3.3 0 3.3 3.3

3.3

3.3 3.3

8

7

6

5

4

3

2

1

9

10

11

12

13

14

15

16

CEC

HDMI_RESET

HDMI_MISO/SCL

HDMI_MOSI/SDA

HDMI_SPDIF

MUTE

NON_LPCM

ARC_SPDIF

DCDC+6V

DCDC+4V

SD3

LRCK

BCK

MCK

GND

SD2

SD1

SD0

DSP_SPICLK

SBL/SBR_OUT

L/R_OUT

SBL/SBR_IN

DSP_NONAU

LRCLK_OUT

C/SW_IN

BCLK_OUT

C/SW1_OUT

DSP_ERROR

LRCLK_IN

MCLK_IN

DSP_INT

BCLK_IN

SL/SR_IN

SL/SR_OUT

UART_IN

DSP_MISO

DSP_MOSI

DSP_CS

DIR_IN

UART_IN

DSP_UART_SEL

DSP+3.3V

DSP_RST

DIR_RST

C2855

10

JL2809

JL2814

JL2812

JL2808

JL2811

10k

R2866

10k

R2835

10k

R2807

10k

R2867

10k

R2895

10k

R2899

10k

R2861

10k

R2910

10k

R2157

22

R2837

22

R2872

22

R284222R283922R2840

22

R2851

22R2846

22

R2850

22

R2838

22

R2825

22

R2826

22R2844

22R2843

22R2852

22R2809

22

R2802

22R2873

100

R2857

100

R2858

1k

R2876

100k

R2875

4.7k

R2053

4.7k

R2853

1M

R2856

0

R2854

C2851

0.1

C2816 0.1

C2864

0.1

C2856

0.1

C2847

0.1

C2844 0.1

C2849

0.1

C2840

0.1

C2826

0.1

C2825 0.1

C2827 0.1

C2846

0.1

C2835

0.1

C2836

0.1

C2853

0.1

C2817 0.1

C2838 0.1

C2845 0.1

C2857

0.1

C2819

0.1

C2850

0.1

C2820

0.1

C2828

0.1

C2862

0.1

C2832

0.1

C2821

0.1

C2858

0.1

C2859

0.1

C2822

0.1

C2831 0.1

C2829 0.1

C2852

0.1

C2818

0.1

C2861

0.1

C2830

0.1

C2863

0.1

C2824

0.1

C2860

0.1

C2854

0.1

C2823

0.1

C2837

0.1

C2842

7p

C2841

7p

FB2608

X2800

25MHz

1

2

C2905
220 4V

SELECT

1A

1B

1Y

2A

2B

2Y

GND 3Y

3B

3A

4Y

4B

4A

ST

VCC

10k

R2834

C2910

10

IC2801

ADSST-AVR-3010

1

SDDQM

2

MS0

3

SDCKE

4

VDD_INT

5

CLK_CFG1

6

ADDR0

7

BOOT_CFG0

8

VDD_EXT

9

ADDR110ADDR211ADDR312ADDR413ADDR5

14

BOOT_CFG1

15

GND

16

ADDR617ADDR7

18NC19

NC

20

ADDR821ADDR9

22

CLK_CFG0

23

VDD_INT

24

CLKIN

25

XTAL2

26

ADDR10

27

SDA10

28

VDD_EXT

29

VDD_INT

30

ADDR11

31

ADDR1232ADDR1733ADDR13

34

VDD_INT

35

ADDR18

36

RESETOUT/RUNRSTIN

37

VDD_INT

38

MOSI39MISO

40

SPICLK

41

VDD_INT

42

DPI_P05

43

DSP_CS

44

MD

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

VDD_EXT

NC

RESET_MAIN

VDD_INT

UART_OUT

UART_IN

LED

NC

NC

NC

NC

NC

VDD_EXT

NC

NC

NC

NC

VDD_INT

NC

NC

VDD_INT

NC

NC

VDD_INT

NC

WDTRSTO

NC

VDD_EXT

SL/SR_OUT

SL/SR_IN

BCLK_IN

OPTION_L/OPTION_R_OUT

FRONTHI_L/R_OUT

VDD_INT

NC

NC

NC

NC

NC

VDD_EXT

VDD_INT

L/R_OUT

MID/SW2_OUT

SBL/SBR_OUT

89

ZONE_L/R90VDD_INT91VDD_EXT92MCLK_IN93VDD_INT94C/SW1_OUT95C/SW_IN

96

A/D_2CH

97

LRCLK_IN98BCLK_OUT99LRCLK_OUT

100

L/R_IN

101

SBL/SBR_IN

102

VDD_INT

103

DIR_IN

104

VDD_EXT

105

VDD_INT

106

BOOT_CFG2

107

VDD_INT

108

AMI_ACK

109

GND

110

THD_M

111

THD_P

112

VDD_EXT

113

VDD_INT

114

VDD_INT

115

MS1

116

VDD_INT

117

WDT_CLKO

118

WDT_CLKIN

119

VDD_EXT

120

ADDR23

121

ADDR22

122

ADDR21

123

VDD_INT

124

ADDR20

125

ADDR19

126

VDDEXT

127

ADDR16

128

ADDR15

129

VDD_INT

130

ADDR14

131

AMI_WR

132

AMI_RD

133VDD_INT

134IRQ/GPIO

135FLAG1

136FLAG2

137MLBCLK

138FLAG3

139MLBDAT

140MLBDO

141VDD_EXT

142MLBSIG

143

VDD_INT

144TRST

145MLBSO

146EMU

147DATA0

148DATA1

149DATA2

150DATA3

151TDO

152DATA4

153VDD_EXT

154DATA5

155DATA6

156VDD_INT

157DATA7

158TDI

159SDCLK

160VDD_EXT

161DATA8

162DATA9

163DATA10

164TCK

165DATA11

166DATA12

167DATA14

168DATA13

169VDD_INT

170DATA15

171SDWE

172SDRAS

173RESET

174TMS

175SDCAS

176VDD_INT

GND

2.2k

R2868

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

RB2103

100

CN2513

20P

NC

1

CEC

RESET

MISO / SCL

MOSI / SDA

NON_LPCM

MUTE

HDMI_SPDIF

SD0

SD1

SD2

SD3

LRCK

BCK

GND

MCK

GND

ARC_SPDIF

DCDC+6V

DCDC+4V

JL2830

JL2831

JL2832

JL2833

JL2834

JL2835

JL2836

JL2837

JL2838

JL2839

JL2840

JL2841

JL2842

JL2843

JL2844

JL2845

JL2846

JL2847

JL2848

47

R2615

100R2626

FB2031

FB2032

330

R2617

470

R2618

220R2841

220

R2829

220

R2831

220

R2824

330R2847

330

R2849

DSP_MISO

DSP_SFLASH_HOLD

DSP_CS

DSP_SPICLK

DSP_MOSI

C2866

10

10k

R2879

10k

R2865

10k

R2898

10k

R2897

22

R2878

22

R2882

22

R2880

22

R2864

22

R2863

C2865

0.1

FB2889

0uH

2.2k

R2881

IC2802

W25Q16BVSSIG

CE#SOWP#

Vss SI

SCK

HOLD#

Vdd

DSP

IC2801

EEPROM

IC2802

DIGITAL
BOARD

(2/4)

(Page 23)

1

DIGITAL

BOARD
(2/4), (3/4)
(Page 23),
(Page 24)

2

DIGITAL
BOARD

(2/4)

(Page 23)

3

DIGITAL

BOARD

(3/4)

(Page 24)

4

DIGITAL BOARD (3/4)

(Page 24)

5

D-VIDEO

BOARD

(1/4)

CN3003

(Page 33)

A

IC2032

TC74VHC157FT (EKJ)

IC B/D

SIGNAL SELECTOR

IC2032

Ver. 1 .1

STR-DH720/DH720HP

STR-DH720/DH720HP

2323

5-10. SCHEMATIC DIAGRAM – DIGITAL Board (2/4) –

• See page 42 for Waveforms. • See page 59 and 60 for IC Pin Function Descriptions.

1

A

B

C

D

E

F

G

H

I

J

K

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

DIGITAL BOARD (2/4)

15

1

11 12

6
5
4

2

3

DIGITAL BOARD

(1/4), (3/4)

(Page 22), (Page 24)

2

13 14

3.3

6

0

0

0

3.3

0

0

3.3

3.3

0

0

3.3

1.8

1.8

3.3

0

0

0

3.3

3.3

3.3

0.8 0 3.3 3.3 3.3 3.3 0 0 3.3 0 0 0 3.3 0 3.3 0 0 0 1.8 0 3.3 3.3 3.3 3.3 3.3 3.3 03.3

0

3.3

3.3

3.3

0

3.3

0

3.3

3.3

3.3

3.3

3.3

3.3

0

3.3

3.3

03.300.90.90.601.5001 10001003.33.3 23.3

3.3

3.3

3.3

0

3.3

0

3.3

1.6

2.7

3.3

2.7

3.3

3.3

3.3

0

3.3
0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

2

3

4

5

6

7

8

9

10

11

12

13

14

VSEL_2

VSEL_1

V_MUTE_1

COMP_SW2

POWER_DET

SIRC

DIR_RST

DCDC+6V

USB_SPDIF

VSEL_2

VSEL_1

V_MUTE_1

SO

V2_AUDIO_R

-7V

+7V

DA

CK

BRIG_RY

MD2

FL_CLK

FL_DATA

FL_CLK

FL_LAT

INPUT

AD_KEY1

AD_KEY2

VOLUME

FL_GND

DCDC+4V

SIRC

HDMI_RESET

CEC_OUT

VIDEO2_AGND

TONE

FLASH_CLK

SI

DIR_SIGNAL

DIR_INT

MODEL

V2_AUDIO_L

DCAC_IN

FUSE_DET

COMP_DET

FL/FR_RY

C/SL/SR_RY

STBY_SUPPLY

+3.3V_STBY

COMP_SW2

MD0

DIR_CE

DCAC_MUTE

IISD

COMP_DET

STOP

VERSION

RESET

DSP_SFLASH_HOLD

SO

HDMI_MISO/SCL

HDMI_MOSI/SDA

CEC_IN

CEC_OUT

CEC

CEC_IN

POWER_DET

AD_KEY1

AD_KEY2

TONE

VOLUME

INPUT

DCAC_MUTE

LIMITER

TUNER_RDS_DATA

TUNER_CE

TUNER_MISO

SBL/SBR_RY

E2P_DATA

E2P_CLK

VCC_3.3V

NO_USE

SW_RY

HP_RY

HP_DET

EVOL_DATA

EVOL_CLK

DAC_MUTE

DAC_LAT

COM_DATA

PROTECTOR

COM_CLK

POWER_RY

STOP

STBY_SUPPLY

DIR_MPO0

DIR_XSTATE

DIR_MISO

DIR_MISO

DSP_ERROR

3.3V
DSP_SPICLK

DSP_MOSI

DSP_MISO

DSP_INT

DSP_RST

DSP_NONAU

DSP_CS

DSP_UART_SEL

VERSION

MODEL

SI

POWER_RY

FL_DATA

FL_LAT

RECTIFIER_TEMP

TEMP_SENSOR_2

TEMP_SENSOR_1

DSP_SEL

+3.3V_STBY

C2417

0.1

X2101
4MHz

C2023

10

RB2102

100

Q2705

CEC DATA SWITCH

RT1N141C-TP-1

Q2703

CEC DATA SWITCH

2SC3052EF-T1-LEF

Q2704

CEC DATA SWITCH

2SC3052EF-T1-LEF

Q2702

CEC DATA SWITCH

ISA1235AC1-T112-1EF

C2112

0.1

FB2311

0uH

FB2101

0uH

C2021

0.47

IC2107

BA33BC0FP-E2

CL2092

CL2087

CL2097

CL2083

CL2093

CL2088

CL2091

CL2085

CL2098

CL2080

CL2094

CL2086

CL2095

CL2053

CL2047

CL2031

CL2027

CL2024

CL2059

CL2040

CL2049

CL2041

CL2021

CL2030

CL2046

CL2051

CL2058

CL2038

CL2025

CL2056

CL2210

CL2211

CL2212

C2459 0.1

R2007 1M

RB2109

100

CL2052

R2324

10kR2131

10k

R2228

10k

R2744

10k

R2132

10k

R2747

10kR2054

100

R2250

10k

R2130

2.2k

R2160

OUT

VDD

VSS NC

CD

RB2104

100

100

RB2106

RB2107

100

R2321

C2206 1000p

C2208 0.1

CN2116

25P

FL_CLK

FL_DIN

FL_LAT

INPUT_JOG

AD1

AD2

SIRCS

PW_SW

VOL_JOG

+3.9V_DCDC

FL_GND

FL_GND

+3.3V(STBY)

DGND

TONE_JOG

D_GND

MIC_MUTE

DCAC_IN

V2_AUDIO_L

A_GND

V2_AUDIO_R

V_GND

V2_VIDEO

+7V

-7V

CL2061

CL2055

CL2050

R2906

R2197

100

R2114

R2607

100R2119

R2609

100

R2620

100

R2621

R2612

100R2123

R2616

100

R2622

100R2124

R2619

100

100

100

100

220

R2746

470

R2285

1k

R2741

1.5k

R2100

22k

R2742

22k

R2743

10kR2015

C2130 0.1

C2101

0.1

C2127

0.1

C2418 0.1

C2413

0.1

C2416

0.1

C2469

0.1

C2462

0.1

C2721

0.1

C2722

0.1

C2402 0.1

27k

R2745

10k

R2158

C2119

0.1

R2613

JL2849

C2022

470 16V

C2131
47 16V

C2883

4.7

C2884

4.7

D2019

DA2J10100L

2.2k

R2608

2

3

4

5

6

7

8

JL2850

JL2851

JL2852

JL2854

JL2855

JL2856

JL2858

CN2603

8P

NC

1

POWER_RY

STOP

USB_UP_MU_MD2

USB_UP_MU_RST

MU_SI/RX

MU_SO/TX

USB_SPDIF

D2714

1SR154-400TE-25

10k

R2915

100

R2917

100

R2918

100

R2919

100R2920

CN2103

14P

NC

1 COMP_SW2

V_MUTE_1

VSEL_1

VSEL_2

VIDEO2

VIDEO2_VGND

COMP_DET

STOP

POWER_RY

STBY_SUPPLY

+3.3V STBY

VERSION

MODEL

100

R2923

C2466 1000p

C2125 1000p

0

R2186

4.7k

R2928

RB2119

100

100R2929

C2909 0.1

10k

R2931

R2112

2.2k

2.2k

2.2k

100

100

R2614

R2220

R2921

100

100

RB2105

100

100R2930

R2052

10k

10k

10k

IC2105

MB90F058PF-G-JNE1

1

SBL-SBR_RY2BRIDGEABLE_RY3HP_RY4HP_DET5NO_USE6E2P_DATA7E2P_CLK8TUNER_SD9TUNER_MOSI10TUNER_CLK11TUNER_RDS_CLK12NO_USE13NO_USE14NO_USE15VCC_3.3V16VSS_GND17C

18 19 20

MU_BUSY21TUNER_LAT22TUNER_RDSDATA23TUNER_MISO24VERSION25MODEL26TEMP_SENSOR_127TEMP_SENSOR_228RECTIFIER_TEMP

29

FL_LAT

30

FL_DATA

31

FL_CLK

32

AVCC_3.3V

33

AVRH

34

LIMITER

35

AVSS

36

AD_KEY_1

37

AD_KEY_2

38

TONE_JOG

39

INPUT_JOG

40

VOL_JOG

41

DCAC_MUTE

42

HDMI_RST/VMCOM_RST

43

HDMI_CECOUT

44

VSS_GND

45

POWER_KEY

46

SIRCS

47

HDMI_CECIN

48

HDMI_MISO/ NO USE

49

HDMI_MOSI/ SDA

50

NO USE/ SCL

51

MD252MD153MD0

54

RST

55

DSP_MISO56DSP_MOSI

57

DSP_SPICLK

58

HDMI_CNVSS

59

SI

60

SO

61

FLASH_CLK

62

UART_SEL

63

DSP_SPICS

64

DSP_SFLASH_HOLD

65

DVCC

66

DVSS

67

DSP_RST

68

DSP_INT

69

DSP_SEL

70

DSP_NPCM

71

DSP_ERROR

72

DIR_MPO073DIR_MPO1

74

DIR_SIGNAL

75

DIR_RST

76

DIR_CE

77

PROG/ DIR_XSTATE

78

PROG/ DIR_MISO

79

FUSE_DET

80

STOP

81

COMP_DET

82

V_COMP_SW2

83

V_MUTE

84

V_SEL_SW1

85

V_SEL_SW2

86

POWER_RY

87

PROTECTOR

88

COM_CLK

89

COM_DATA

90

VCC_3.3V

91

VSS_GND

92

X1(X_OUT)

93

X0(X_IN)

94

DAC_LATCH

95

DAC MUTE

96

EVOL_CLK

97

EVOL_DATA

98

C/SL-SR_RY

99

FRONT_SPK_A_RY

100

PREOUT_SW_RY

10k

R2953

C2912

0.1

C2913

0.1

C2917

0.1

C2918

0.1

10kR2939

D2701

RB751V-40TE-17

1k

R2951

1k

R2952

Q2006

2SC3052EF-T1-LEF

470

R2914

470

R2251

CL2213

100

R2932

1M

R2116

1M

R2322

MD0

MD2

SI

SO

FLASH_CLK

RESET

GND

3.3V

DIR_MISO

CN2602

9P

GND

3.3V

RESET

CLK

SO

SI

PROG

MD2

MD0

CL2007

CL2005

CL2004

CL2003

CL2001

CL2006

CL2002

CL2010

CL2009

1

2

3

4

5

6

7

8

9

VCC

GND

OUT

16

17

18

19

20

21

22

23

24

25

5

43

2

1

10k

SYSTEM CONTROL

IC2105

DIGITAL
BOARD

(1/4)

(Page 22)

1

DIGITAL BOARD

(1/4)

(Page 22)

3

D-VIDEO

BOARD

(1/4)

CN3004

(Page 33)

B

FLASH

PROGRAMMING

DIGITAL BOARD (3/4)

(Page 24)

6

DIGITAL BOARD (4/4)

(Page 25)

7

DIGITAL BOARD

(3/4)

(Page 24)

8

DISPLAY
BOARD
CNS151

(Page 40)

C

STANDBY-A

VIDEO PC

BOARD

CN271

(Page 38)

D

DATA SWITCH

IC2020

S-80929CNMC-G8ZT2G

RESET SIGNAL GENERATOR

IC2020

+3.3V REG

IC2107

I2C/RDSI

1

STR-DH720/DH720HP

STR-DH720/DH720HP

2424

5-11. SCHEMATIC DIAGRAM – DIGITAL Board (3/4) –

• See page 42 for Waveforms. • See page 46 for IC Block Diagrams.

1

A

B

C

D

E

F

G

H

I

J

K

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

DIGITAL BOARD (3/4)

23

21

18

20

19

15

11

12

7

810 9

22

24

17

16

2

3

1.4 3.3

1.8

3.3

3.30

3.3

3.3

3.3

3.3 1.3

1.4 3.3

1.8 1.3

3.3 1.3

3.3

1.8

1.2

2.7

2.6

1.21.2

1.3

3.3

3.3

3.3

3.3

1.7 1.8 1.80

0

3.3

3.3

0

2.8

2

0

0

2.6

3.3

0 3.3 1.3 0 3.3 0 0

0

0

0

0

3.3

0

0

0

0

0

0

02.452.403.31.81.8

0

3.3

0 3.3

0

3.3

3.3

3.3 3

0

3.1

0

3.3

6 3.7

6.2 6.2

1.1 1

0.9

1

3.3 3.9 3.9

VCC

OUT

GND

VCC

OUT

GND

123465

BCLK_IN

SBL/SBR_IN

C/SW_IN

SL/SR_IN

DIR_SIGNAL

SD3

SD2

SD1

SD0

LRCK

BCK

MCK

NON_LPCM

MUTE

DIR_IN

DIR_RST

DSP_SEL

HDMI_SPDIF

ARC_SPDIF

USB_SPDIF

DSP_NONAU

MCLK_IN

MCK

LRCLK_IN

C/SW1_OUT

L/R_OUT

FL_GND

SBL/SBR_OUT

SL/SR_OUT

DIN4/DNC

DIN2

DSP_ERROR

DIR_XSTATE

DIR_INT

DIR_CE

DIR_MISO

DIR_MPO0

C2361

0.1

C2358

0.1

IC2351

TORX147L(SONY)

J2301

1P

COAXIAL

BD/DVD IN

FB2604

C2815

7p

C2814

7p

X2801

24.576MHz

C2871

10

C2868

10

FB2603

10k

R2901

FB2033
21A102

IC2804

TC74VHC157FT (EKJ)

1

SEL

2

A0

3

B0

4

Y0

5

A1

6

B1

7

Y1

8

GND9Y2

10

B2

11

A2

12

Y3

13

B3

14

A3

15

ST

16

VCC

FB2007

21A102

R2211

R2111

10k

47k

R2311

8

7

6

5

4

3

2

1

CK

D

Q

GND Q

CLR

PR

VCC

FB2801

0uH

10k

R2125

10k

R2011

10k

R2108

10kR2099

100

R2059

100

R2351

100

R2354

100

R2759

220

R2816

330

R2601

330

R2602

470

R2356

1k

R2104

47k

R2357

470k

R2358

1M

R2815

R2415

R2416

0

0

R2417 0

C2268

4700p

C2069

0.01

C2272

0.1

C2354

0.1

C2881

0.1

C2875

0.1

C2072

0.1

C2870

0.1

C2273

0.1

C2011 0.1

C2274

0.1

C2351

0.1

C2269

0.068

680

R2050

C2114

22

C2370

10

D2104

DA2J10100L

220ohm

FB2884

220ohm

FB2885

L2007
10uH

C2874

10

C2879

0.022

C2873

10

IC2803

MP2301ENE-LF-Z

1

BST

2

VIN

3

SW

4

GND5FB

6

COMP

7

EN

8

SS

9

TAB

C2876

0.1

C2878

0.1

C2899

0.1

1kR2892

1k

R2891

C2270

0.1

C2877

1000

6.3V

220ohm

FB2886

L2008

10uH

FB2887

0uH

JL2868

JL2869

JL2870

JL2871

JL2872

22k

R2173

IC2010

SI-3010KM-TLS

ENINGND

OUT

FB

GND

10k

R2172

D2717

DA2J10100L

FB2891

0uH

C2355

22

6.3V

47

R2925

IC2303

TC7WHU04FU (TE12R)

IN1

OUT3

IN2

GND OUT2

IN3

OUT1

VCC

C2074

10

10k

R2103

C2070

0.1

100

R2912

IC2805

TC74VHC08FT (EL)

1

A0

2

B0

3

Y0

4

A1

5

B1

6

Y1

7

GND8Y2

9

B2

10

A2

11Y3

12

B3

13

A3

14

VCC

FB2892

0uH

IC2009

TC7WH74FK

Q2706
RT1N141C-TP-1
MUTE SWITCH

C2470

10

10k

10k

R2933

C2013 100 16V

C2869

220 4V

C2872

220 4V

C2265

100
16V

C2266

100
16V

C2264

100 16V

C2267 100 16V

1k

R2941

C2093

470p

1M

R2005

IC2006

PCM9211PTR

ERROR/INT0

NPCM/INT1

MPIO_A0/HDMI_MCK

MPIO_A1/HDMI_BCK

MPIO_A2/HDMI_LRCK

MPIO_A3/SD0

MPIO_C0/X_STATE

MPIO_C1/SD1

MPIO_C2/SD2

MPIO_C3/SD3

MPIO_B0/SI_C

MPIO_B1/SI_D

13

SI_E

14

SI_F

15

MPO0

16

MPO1/DIR_INT

17

DOUT

18

LRCK

19

BCK

20

SCKO

21

DGND

22

DVDD

23

MDO/ADR0

24

484746454443424140393837

MDI/SDA

25

MC/SCL

26

MS/ADR1

27

MODE

28

RXIN7/HDMI_SPDIF

29

RXIN6/HDMI_ARC

30

RXIN5/USB_SPDIF

31

RXIN4/TV OPT IN

32

RXIN3/SAT/CATV OPT IN

33

RXIN2/DVD_Coaxial In

34

RST

35

RXIN1

36

12

11

10

9

8

7

6

5

4

3

2

1

VDDRX

RXIN0

GNDRX

XTI

XTO

AGND

VCC

FILT

VCOM

AGNDAD

VCCAD

VINL

VINR

10k

R2940

C2359

100
16V

10k

R2886

3.3k

R2860

680

R2889

0

R2946

0

R2949

0

R2947

0

R2948

C2468 0.1

DIN1

100

R2959

100

R2958

100R2960

DIN3 100R2957

470

R2610

75

R2855

1.1V

4815263

7

DIGITAL OPTICAL

RECEIVE

IC2351

IC2352

TORX147L(SONY)

DIGITAL OPTICAL

RECEIVE

IC2352

IC B/D

WAVE SHAPER

IC2303

IC B/D

SIGNAL SELECTOR

IC2805

SCHMITT TRIGGER

IC2009

DIGITAL AUDIO

INTERFACE
RECEIVER

IC2006

MUTING

IC2804

+3.3V REG

IC2010

POWER OPERATION AMP

IC2803

OPTICAL

SAT/CATV

IN

DIGITAL

(ASSIGNABLE)

DIGITAL
BOARD

(2/4)

(Page 23)

DIGITAL
BOARD

(4/4)

(Page 25)

DIGITAL
BOARD

(1/4)

(Page 22)

DIGITAL BOARD (1/4)

(Page 22)

DIGITAL

BOARD
(1/4), (2/4)
(Page 22),
(Page 23)

DIGITAL
BOARD

(2/4)

(Page 23)

DIGITAL
BOARD

(4/4)

(Page 25)

DIGITAL

BOARD

(4/4)

(Page 25)

5

6

4

8

10

11

2

9

IC B/D

IC B/D

2

3

OPTICAL

IN

TV

Ver. 1 .1

STR-DH720/DH720HP

STR-DH720/DH720HP

2525

1

A

B

C

D

E

F

G

H

I

J

K

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

DIGITAL BOARD (4/4)

20

23

16

17

21

22

24

19

18

13

14

3.3

5

1.3

7

9

15

6.7

0 0 0 3.3 1.3 1.3 1.8 1.3 3.3 1.8 1.8 1.8

0 2.45 2.4 2.4 2.4 2.4 2.4 2.4 2.4 0 5

V2_AUDIO_L

V2_AUDIO_R

VIDEO2_AGND

DCAC_IN

1

2

3

4

5

6

7

8

9

I

O

COM

1

2

3

4

765432113 12 11 10 8914

22 23 242526 27 2816 17 18 19 212015

DAC_MUTE

LRCLK_OUT

BCLK_OUT

MCK

DIN4/DNC

DIN1

DIN2

DIN3

DAC_LAT

TEMP_SENSOR_2

TEMP_SENSOR_1

TUNER_CE

DA

CK

IISD

FUSE_DET

+15V_TUNER

SBL

SBR

SL

SR

C

SW

VCC_3.3V

E2P_DATA

E2P_CLK

NO_USE

TUNER_MISO

+7V

COM_DATA

COM_CLK

TUNER_RDS_DATA

R

L

C2510

0.1

D2003

1SS367-T3SONY

D2004

1SS367-T3SONY

FB2502

0uH

C2508

0.1

FB2501

0uH

C2511

100p

C2512

10

C2421

1

CL2204

CL2203

CL2201

CL2200

C2506

0.1

C2502

0.1

C2501

10

10k

R2421

R2511

10k

10k

R2512

D2018

1SS367-T3SONY

L_CH

Vcc

R_CH

GND

SD

CE

DI

CLK

TUNER_MISO/ DO

CN2003

9P

IC2005

KIA7809AF/API

C2015

0.47

JL2021

JL2022

JL2821

JL2822

JL2823

JL2824

JL2825

JL2826

JL2827

C2517
1000p

C2531
1000p

C2514

0.01

C2516

0.01

C2515

0.1

C2424

0.1

C2504

0.1

C2003

0.1

33

R2509

22k

R2540

33k

R2541

C2503
220 4V

C2016

47 16V

CN2501

4P

+3.3V

DGND

TEMP_SENSOR_1

TEMP_SENSOR_2

FB2043

0uH

C2422

4.7

D2713

DA2J10100L

FB2890

0uH

IC2421

TK11150CSCL-G

ON/OFF

GND

NoiseBypass

VOUT

VIN

C2033

0.1

C2882

100
10V

C2507

10 16V

C2509

10

16V

C2096 100 16V

10k

R2938

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

BRIG_RY

HP_DET

+15V_TUNER

EVOL_DATA

EVOL_CLK

C/SL/SR_RY

SBL/SBR_RY

FL/FR_RY

SW_RY

HP_RY

LIMITER

PROTECTOR

RECTIFIER_TEMP

CL2011

CL2074

CL2073

CL2075

CL2071

CL2072

CL2070

CL2067

CL2066

CL2069

CL2063

CL2062

CL2065

CL2064

CL2068

CL2082

D2110

DA2J10100L

D2302

MC2838-T112-1

D2303

MC2838-T112-1

CN2105

19P

NC

1

+3.3V

DGND

REG_TEMP

HP_RY

PREOUT_SW_RY

FL-FR_RY

SBL-R_RY

BRIDGEABLE_RY

C-SLR_RY

PROTECTOR

LIMITER

HP_DET

+15V_TUNER

EVOL_DATA

EVOL_CLK

VIDEO2_R

A_GND

VIDEO2_L

JL2878

IC2501

WM8768GEDS/R

MODE

MCK

BCK

LRCK

DVDD

DGND

DIN1

DIN2

DIN3

DIN4/DNC

ML/I2S

MC/IWL

MD/DM

MUTE

TEST_REF

VREF_N

VREF_P

VMID

VO4L

VO4R

VO1L

VO1R

VO2L

VO2R

VO3L

VO3R

AGND

AVDD

1k

R2962

1k

R2963

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

LRCK/LOUT

BCLK/ROUT

-7V

+7V

CL2032

CL2017

CL2015

CL2013

CL2022

CL2019

CL2016

CL2045

CL2028

CL2048

CL2012

CL2020

CL2018

CL2014

CL2029

JL2863

CN2114

19P

+7V

-7V

L_IN

AGND

AGND

R_IN

FR_OUT

FL_OUT

SW_OUT

C_OUT

SR_OUT

SL_OUT

SBR_OUT

SBL_OUT

DCAC_IN

TUNER_R

TUNER_L

19

NC

10k

R2058

R2159

3.3k

C2140

0.1

IC2106

CAT24C64WI-GT3

1

A0

2

A1

3

A2

4

GND

5

SDA

6

SCL

7

WP

8

VCC

EEPROM

IC2106

+9V REG

IC2005

IC B/D

D/A CONVERTER

IC2501

LRCK/LOUT

BCLK/ROUT

+5V REG

IC2421

DIGITAL BOARD

(2/4)

(Page 23)

DIGITAL BOARD

(3/4)

(Page 24)

DIGITAL BOARD

(3/4)

(Page 24)

DIGITAL BOARD

(3/4)

(Page 24)

9

10

11

7

MAIN

BOARD

(3/4)

CNP410

(Page 29)

F

TEMP-SENSOR

BOARD

CN250

(Page 45)

E

MAIN

BOARD

(3/4)

CNP411

(Page 29)

G

6

COAXIAL

GND

AM

2

1

8

4

TN1

5

VCC +9V

SD

RCH OUT

DI

DO/ST/SD

9

3

LCH OUT

ANTENNA

CL

7

CE

FM 75

10

RDS DATA

11

RDS INT

(ECE)

10

11

CN2002

11P

RDS_INT

RDS_DATA

(US, CND)

(ECE)

I2C/RDSI

JL2828

JL2829

5-12. SCHEMATIC DIAGRAM – DIGITAL Board (4/4) –

• See page 46 for IC Block Diagrams.

Note 1: IC2106 on the DIGITAL board cannot exchange with

single. When this part on the DIGITAL board is damaged,
exchange the entire mounted board.

Note 2: When the DIGITAL board (Suffi x-11) is replaced, refer

to “NOTICE OF BOARD VERSION CHECK” (page 4).

Ver. 1 .2

STR-DH720/DH720HP

STR-DH720/DH720HP

2626

5-13. PRINTED WIRING BOARD – MAIN Board –

• See page 19 for Circuit Boards Location. • : Uses unleaded solder.

1

A

B

C

D

E

F

G

H

I

J

K

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

132 132 132 132

132

132

132

132 132 132 132 132

132 132

EB EB

EB

EB

EB

EB

EB

EB

EB

EB

EB

EB

EB

EB

JR

JR

JR

JR

JR JR JR

JR

JR

JR

JR

JR

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

JR

JR

B

E

B

E

B

E

B

E

B
E

B
E

IO

IC352

IO

IC350

IC801

15

14

2

1

15

14

2

1

15

14

2

1

15

14

2

1

IC701

IC601

IC501

IC400

20

21

416040

61

80 1

Q654

HS921

Q851

Q852

Q853

Q854

HS350

15

CNP920

R609

R610

R612

R613

R809

R810

R812

R813

LP401

R628

R629

L678

R828

R829

L878

C408

C603

C605

C607

C608

C609

C803

C610

C805

C612

C807

C808

C809

C810

R659

C812

R660

R662

R663

R859

C629

R860

R862

R863

C829

R678

R679

F910

R878

F911

R879

F912

F913

C458

C653

C655

C657

C658

C659

Q503

Q504

C853

C660

C855

C662

C857

C858

C471

C859

Q701

Q702

Q703

Q704

C860

C862

C679

RR11

RR12

RR13

RR14

RR15

RR17 RR18

C879

L728

J401 J405

Q551

Q552

Q553

Q554

R302

Q751

Q752

Q753

Q754

L550

R513

LP401

R709

R710

R712

R713

R728

R729

L778

R920

R545

R351

R546

R356

C703

C705

C707

R550

C320

C708

R551

C709

R553

R361

C325

R558

C710

R365

C712

R759

C912

C913

R567

R377

R760

R762

R763

C729

RY301

C545

C351

C546

C547

C353

R778

R779

C550

C552

C555

C557

C558

C559

C753

C560

C561

C755

C757

C758

C759

Q601

Q602

Q603

Q604

C760

C762

Q801

Q802

RY920

C779

D921

L628

L828

Q651

Q652

Q653

TB502

TB503

ET300

J409

C321

C380

C381

C382

C383

C384

C385

C386

C387

C930

C931

JWH603

JWH600

JWH601

JW758

JW770

JW796

JW797

JW603

JW609

JW803

JW612

JW807

JW624

JW628

JW833

JW660

JW665

JW670

JW671

JW672

JW674

JW677

JW691

JW709

JW710

JW713

JW721

JW728

JW741

JW742

JW743

JW746

JW757

JW762

JW775

JW787

JW788

JW601

JW801

JW804

JW611

JW613

JW815

JW625

JW633

JW641

JW643

JW646

JW707

JW708

JW731

JW732

JW751

JW752

JW755

JW759

JW760

JW773

JW783

JW792

JW604

JW605

JW621

JW821

JW824

JW635

JW636

JW639

JW645

JW650

JW682

JW689

JW693

JW738

JW740

JW753

JW756

JW763

JW768

JW772

JW774

JW782

JW805

JW614

JW809

JW617

JW623

JW627

JW629

JW820

JW630

JW637

JW642

JW649

JW654

JW666

JW667

JW673

JW694

JW695

JW718

JW739

JW744

JW747

JW766

JW790

JW795

JW648

JW651

JW656

JW659

JW661

JW663

JW690

JW717

JW719

JW722

JW745

JW761

JW764

JW769

JW776

JW779

JW780

JW784

JW798

JW600

JW606

JW607

JW610

JW615

JW619

JW620

JW622

JW816

JW818

JW826

JW638

JW832

JW644

JW652

JW657

JW658

JW662

JW664

JW668

JW678

JW683

JW684

JW685

JW688

JW692

JW504

JW700

JW704

JW712

JW716

JW724

JW726

JW729

JW749

JW767

JW777

JW778

JW781

JW785

JW791

JW793

JW602

JW608

JW800

JW802

JW618

JW811

JW626

JW631

JW632

JW634

JW640

JW655

JW669

JW676

JW680

JW681

JW686

JW687

JW698

JW699

JW703

JW705

JW711

JW714

JW715

JW720

JW725

JW733

JW734

JW736

JW737

JW750

JW697

JW701

JW616

JW808

JW813

JW647

JWH604

JWH602

TB504

JW653

RY350

RY355

RY360

RY365

RY375

JW819

JW675

119

CNP410

1

19

CNP411

1

5

CNP930

1

5

CN391

JW679

D326

D327

D910

D911

D912

D913

Q661

Q662

Q861

Q862

Q301

Q320

Q321

Q323

Q324

Q325

Q711

Q712

Q920

Q350

Q355

Q550

Q360

Q555

Q365

Q375

Q761

Q762

Q611

Q612

Q811

Q812

D365

D375

D761

D770

D611

D811

D620

D820

D661

D861

D670

D870

D301

D711

D720

D920

D350

D355

D550

D551

D360

D302

D303

D352

R401

R402

R403

R405

R408

R601

R602

R603

R604

R606

R607

R608

R801

R802

R803

R804

R611

R806

R807

R614

R808

R615

R616

R811

R620

R814

R815

R622

R816

R820

R822

R630

C400

C405

R830

R449

C602

R450

R451

R452

R453

R455

C802

R458

C611

R651

R652

R653

R654

R656

R657

R658

C811

R466

R467

C620

R851

R853

R854

R661

R856

R857

R470

R664

R858

R665

R666

C820

R861

R670

R864

R865

R672

R866

C449

R870

CL339

R872

C450

R680

R880

C652

C852

CL357

CL358

C661

JR601

JR602

CL362

CL363

CL364

C861

CL367

CL368

C670

CL369

CL370

CL371

CL372

CL373

C488

C870

C489

C499

R301

R304

R701

R702

R703

R704

R706

R707

R320

R708

R325

R326

R327

R328

R711

R714

R715

R716

R720

R722

R921

R730

R925

CL393

R544

R350

R547

R353

R354

R548

R549

R355

C702

R358

R552

R554

R360

R555

R556

R557

R363

R559

C711

R366

R367

R751

R752

R753

R560

R754

R562

R756

R563

R757

C910

R564

R758

C911

R565

R566

R568

C720

R569

R375

R378

R761

R764

R765

R766

R770

R772

C350

C352

C548

R780

C551

C553

C554

CC01

CC02

CC03

CC05

CC08

C752

CC11

CC12

CC13

CC14

CC15

CC17

CC18

C761

JR700

JR701

JR706

C770

D536

CC51

CC52

CC53

CC55

CC58

C933C932

C390

C397

C391

C392

R380

R387

C396

R385

R386

R388

C388

CL301

CL302

CL303

CL305

CL309

CL307

CL310

CL306

CL308

CL304

CL311

CL314

CL315

CL313

CL312

JR707

CL300

CL323

CL329

CL321

CL318

CL320

CL322

CL317

CL316

CL319

CL326

CL327

CL325

CL328

CL333

CL324

R381

R382

C393

CL382

CL381

R383

C394

R384

C395

CL340

CL341

CL337

CL338

CL336

CL335

C322

C389

R389

R357

R321

CL344

CL347

CL348

CL345

CL346

CL356

CL355

CL374

CL375

CL366

CL360

CL361

JR600

CL359

JR603

JR604 JR605

R852

JR606

JR607

CL376

CL399

CL392

CL387

CL380

CL389

CL401

CL398

CL385

CL378

CL394

CL386

CL396

CL390

CL384

CL388

CL391

CL379

CL400

CL395

CL377

CL383

CL397

R392 R393

R394

R395

CL351

CL350

CL349

C398

C399

R348

JR608

JR609

C491

C323

C402

C401

C324

C404

C403

C490

MAIN
BOARD

1-883-403-

13

(13)

–

+

–

+

–

+

–

+

SURROUND

BACK/

FRONT HIGH

SURROUND

CENTER

L

R

L

R

FRONT

SPEAKERS

(CHASSIS)

R

L

R

L

R

L

R

L

R

L

(CHASSIS)

(CHASSIS) (CHASSIS)

TV

AUDIO

IN

VIDEO 1

AUDIO

OUT

VIDEO 1

AUDIO

IN

SAT/CATV

AUDIO

IN

SA-CD/CD

AUDIO

IN

SUBWOOFER

AUDIO
OUT

B

DIGITAL

BOARD
CN2114

(Page 20)

C

DIGITAL

BOARD
CN2105

(Page 20)

J

HEADPHONE

BOARD

CN790

(Page 45)

H

POWER

TRANSFORMER

(MAIN)

T901

(Page 37)

I

POWER

TRANSFORMER

(MAIN)

T901

(Page 37)

(CHASSIS)

ECE

+ –

RLRL

Ver. 1 .1

STR-DH720/DH720HP

STR-DH720/DH720HP

2727

5-14. SCHEMATIC DIAGRAM – MAIN Board (1/4) –

1

A

B

C

D

E

F

G

H

I

J

K

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

MAIN BOARD (1/4)

18 20 21 2219

1
2
3
4
5
6
7

8
9

10

12

13

14

15

16

11

17

-1

00

-60

0-1

-60

0

-1

-1

00

-60

0

-1

-1

00

-60

0

-1

-1

00

611 0 -61-1 0 611 0 -61-1 0 611 0 -61-1 0 611 0 -61-1 0

-1

0.4

-0.5

-1

0.4

-0.5

-1

0.4

-0.5

-1

0.4

-0.5

0.4

-1

1

0.4

-1

1

0.4

-1

1

0.4

-1

1

-61 61 61 1 00 0 0 0 -60 -1 1

-61 61 61 1 00 0 0 0 -60 -1 1

123456789101112131415

123

SBL_OUT

SBR_OUT

FR_OUT

R813

0.22

Q503

MN2488-OPY-MK

SBL +VE

47k

R830

R863

0.22

Q753

MN2488-OPY-MK

FR +VE

4.7k

R811

47k

R780

82k

R857

Q801

2SA1175-HFE

2SA1175-HFE

1.5k

R764

4.7k

R861

C870

0.01

Q504

MP1620-OPY-MK

SBL -VE

4.7k

R761

68k

R766

1.5k

R814

R779

10

15k

R815

Q754

MP1620-OPY-MK

FR -VE

1.5k

R864

C761
220p

C820

0.01

2.2k

R856

C879

0.022

2.2k

R756

68k

R804

Q854

MP1620-OPY-MK

C -VE

C861

220p

68k

R816

Q851

2SA1175-HFE

R879

10

2.2k

R806

R829

10

C779

0.022

82k

R757

R862

6.2k

15k

R865

68k

R866

47k

R880

R812

6.2k

15k

R765

R763

0.22

C770

0.01

82k

R807

Q853

MN2488-OPY

-MK

C +VE

C829

0.022

C811
220p

1k

R851

1k

R801

C852
100p

68k

R852

68k

R802

R760

100

R859

100

R809

100

R810
100

R860
100

R759

100

R762

6.2k

D536

MAZ8056GMLS0

22k

R548

22k

R549

100k

R772

100k

R822

100k

R872

68k

R854

2.2k

R853

47k

R820

47k

R870

0

R544

Q752

Q852

2SD2144S-V

Q802

2SD2144S-V

2SD2144S-V

1k

R560

C553

100p

68kR554

68k

R565

2.2k

R563

82k

R555

2.2k

R556

Q551

BIAS

BIAS

BIAS

BIAS

BIAS

Q751

2SA1175-HFE

BIAS

BIAS

2SD2144S-V

BIAS

R553

100

R567

100

Q552

Q554

MP1620-OPY-MK

SBR -VE

Q553

MN2488-OPY-MK

SBR +VE

BCE

123

BCE

123

BCE

123

BCE

123

BCE

123

BCE

123

BCE

123

BCE

R513

0.22

4.7k

R552

C554

0.01

L550

1.7uH

1.5k

R562

C550

0.022

C551

220p

R551

10

R558

6.2k

15k

R564

68k

R569

47k

R568

R550

4.7

L828

1.7uH

R828

4.7

L878

1.7uH

R878

4.7

L778

1.7uH

R778

4.7

100k

R559

47k

R557

C853

10p

C803
10p

C560

10p

C855

3p

C805

3p

C559

3p

C857

47 25V

C757
47 25V

C807
47 25V

C558
47 25V

C812

220
10V

C557
220
10V

C860

10

50V

C555

10
50V

560

R758

560

R858

560

R808

560

R566

C802
100p

C862

[SBL][SBR]

220
10V

C810

10

50V

2.2k

R803

6.8k

R547

47k

R770

C552

47p

C808

47p

C858

47p

C561

47p

C809

47p

C758

47p

C859

47p

C759

47p

Q862

2SA1514KT146S

Q811

2SA1514KT146S

Q762

2SA1514KT146S

Q555

2SA1514KT146S

Q861

2SA1514KT146S

Q812

2SA1514KT146S

Q761

2SA1514KT146S

Q550

CURRENT DETECT

CURRENT DETECT

CURRENT DETECT

CURRENT DETECT

CURRENT DETECT

CURRENT DETECT

CURRENT DETECT

CURRENT DETECT

2SA1514KT146S

IC801

STK350-630TS-E

MUTE

+VOUT1

-VOUT2

COMP1

NF1

IN1

GND

IN2

NF2

COMP2

-VOUT2

+VOUT2

VCC

VCC

VEE

IC501

STK350-630TS-E

MUTE

+VOUT1

-VOUT2

COMP1

NF1

IN1

GND

IN2

NF2

COMP2

-VOUT2

+VOUT2

VCC

VCC

VEE

D550

DA2J10100L

D551

DA2J10100L

D820

DA2J10100L

D811

DA2J10100L

D870

DA2J10100L

D861

DA2J10100L

D770

DA2J10100L

D761

DA2J10100L

C545

47 25V

C548

0.1

[FR][SBL][SBR]

[C]

[C]

123456789101112131415

SBR_OUT

C_OUT

SBL_OUT

PRE DRIVER

IC501

PRE DRIVER

IC801

CL394

CL395

CL396

CL397

1

MAIN BOARD

(2/4)

(Page 28)

3

MAIN BOARD

(2/4)

(Page 28)

4

MAIN BOARD (3/4)

(Page 29)

5

MAIN BOARD (3/4)

(Page 29)

2

MAIN BOARD

(2/4)

(Page 28)

STR-DH720/DH720HP

STR-DH720/DH720HP

2828

5-15. SCHEMATIC DIAGRAM – MAIN Board (2/4) –

1

A

B

C

D

E

F

G

H

I

J

K

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

MAIN BOARD (2/4)

25 26

2423

27 28 29 30 32 33 34

1
2
3
4
5
6
7

8
9

10

12
13

14

15

16

11

31

(CHASSIS)

611 0

-61-1 0

611 0

-61-1 0 611 0

-61-1 0

-1

0.4

-0.5

0.4

-1

1

-1

0.4

-0.5

0.4

-1

1

-1

0.4

-0.5

0.4

-1

1

-60

0

-1

-1

00

-60

0

-1

-1

00

-60

0

-1

-1

00

0

0

3.3

3.3

0

0

-61

3.3

-61

0

-60

0

0

0

-60

0

15

-61 61 61 1 00 0 0 0 -60 -1 1

-61 61 61 1 00 0 0 0 -60 -1 1

E

2

3

4

5

SL_OUT

SR_OUT

HP

FR_OUT

FL_OUT

HP_DET

FL_OUT

Q653

MN2488-OPY-MK

SR +VE

R662

6.2k

47k

R680

2.2k

R656

1.5k

R664

C679

0.022

82k

R657

4.7k

R661

68k

R666

Q604

MP1620-OPY-MK

SL -VE

Q603

MN2488-OPY-MK

SL +VE

R679

10

Q654

MP1620-OPY-MK

SR -VE

15k

R665

R663

0.22

C670

0.01

C661
220p

Q701

1.5k

R714

C711
220p

Q703

MN2488-OPY-MK

FL +VE

R729

10

2.2k

R706

C720

0.01

82k

R707

4.7k

R711

C729

0.022

Q704

MP1620-OPY-MK

FL -VE

15k

R715

R713

0.22

R712

6.2k

68k

R716

39k

R326

Q324

2SC3052EF-T1-LEF

C325

10
50V

10k

R327

6.8k

R325

Q321

PROTECTOR

PROTECTOR

PROTECTOR

PROTECTOR

PROTECTOR

2SC3052EF-T1-LEF

1k

R328

1k

R601

C602

100p

1k

R651

C652
100p

68k

R652

1k

R751

1k

R701

C752

100p

C702
100p

68k

R752

68k

R702

2.2k

R375

Q375

RELA

Y DRIVER

2SC3052EF-T1-LEF

47k

R730

R709

100

R710

100

R660

100

R659

100

47k

R378

Q325

2SC2713-G

100k

R672

100k

R722

CL364

CL362

CL363

D327

MC2838-T112-1

D326

MC2838-T112-1

R610

100

82k

R607

R609
100

2.2k

R606

R613

0.22

C611
220p

R612

6.2k

4.7k

R611

1.5k

R614

100k

R622

C620

0.01

15k

R615

68k

R616

47k

R630

C629

0.022

R629

10

47k

R670

47k

R620

R545

0.47

R546

0.47

Q702

Q651

2SA1175-HFE

BIAS

2SA1175-HFE

BIAS

Q601

2SA1175-HFE

BIAS

Q652

2SD2144S-V

BIAS

2SD2144S-V

BIAS

Q602

2SD2144S-V

BIAS

123

BCE

L678

1.7uH

R678

4.7

L628

1.7uH

R628

4.7

L728

1.7uH

R728

4.7

68k

R602

C703

10p

C753
10p

C653

10p

C603

10p

C607

47 25V

C707

47 25V

C657

47 25V

C610

10

50V

C710

10

50V

C660

10

50V

C760

10
50V

560

R608

560

R708

560

R658

68k

R704

2.2k

R703

C705

3p

C712

220
10V

68k

R604

2.2k

R603

C605

3p

C612
220
10V

68k

R754

C755

3p

C762
220
10V

2.2k

R753

47k

R720

C658
47p

C708

47p

C608
47p

C659

47p

C609

47p

C709

47p

Q712

2SA1514KT146S

Q662

2SA1514KT146S

Q611

2SA1514KT146S

Q320

2SA1514KT146S

Q612

2SA1514KT146S

Q661

2SA1514KT146S

CURRENT DETECT

CURRENT DETECT

CURRENT DETECT

CURRENT DETECT

CURRENT DETECT

CURRENT

DETECT

Q711

2SA1514KT146S

Q323

2SA1514KT146S

IC601

STK350-630TS-E

MUTE

+VOUT1

-VOUT2

COMP1

NF1

IN1

GND

IN2

NF2

COMP2

-VOUT2

+VOUT2

VCC

VCC

VEE

IC701

STK350-630TS-E

MUTE

+VOUT1

-VOUT2

COMP1

NF1

IN1

GND

IN2

NF2

COMP2

-VOUT2

+VOUT2

VCC

VCC

VEE

ET300

CN391

5P

NC

1 HP DETECT

R-CH

GND

L-CH

D302

1SS367-T3SONY

D303

1SS367-T3SONY

D670

DA2J10100L

D661

DA2J10100L

D720

DA2J10100L

D711

DA2J10100L

D620

DA2J10100L

D611

DA2J10100L

D375

DA2J10100L

22k

R320

R321

22k

C320

220
10V

C321

220

10V

R377

82

C322

0.1

R392

330

330

R393

R394

330

330

R395

RY375

12V

1

2

3

4

5

6

[SR] [SL][FL]

[SL][SR]

[FL][FR]

68k

R654

C655

3p

C662

220
10V

2.2k

R653

123456789101112131415

123456789101112131415

123

BCE

123

BCE

123

BCE

123

BCE

123

BCE

SL_OUT

PROTECTOR

SR_OUT

PRE DRIVER

IC701

PRE DRIVER

IC601

CL401

CL398

CL387 CL385

CL386 CL384

CL399

CL400 CL391

CL390

CL383

CL388

CL389

H

HEADPHONE

BOARD

CN790

(Page 45)

6

MAIN BOARD (3/4)

(Page 29)

7

MAIN BOARD (4/4)

(Page 30)

3

MAIN

BOARD

(1/4)

(Page 27)

2

MAIN

BOARD

(1/4)

(Page 27)

1

MAIN

BOARD

(1/4)

(Page 27)

C403

10p

C404
10p

STR-DH720/DH720HP

STR-DH720/DH720HP

2929

5-16. SCHEMATIC DIAGRAM – MAIN Board (3/4) –

• See page 49 for IC Block Diagrams.

1

A

B

C

D

E

F

G

H

I

J

K

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

MAIN BOARD (3/4)

18

17

25 2620 21

22

2423

19

36

35

37

39

38

-15

-7

15

7

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

7 0

0 0

-7 0 0 0 0 0 0 0 0

0

0.7

IO

G

I

O

COM

G

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

DATA

CLK

SW

C_SUR

PROTECTOR

HP_DET

BRIDGE

SBL_R

LR

SW

HP

1kR451

1kR402

1kR452

C400
2200p

W002

CC01 100p

CC51 100p

CC02 100p

CC52 100p

CC08 100p

CC58 100p

CC03 100p

CC53 100p

CC05 100p

CC55 100p

1kR401

1k

R453

1k

R403

A_GND

C405
2200p

C449 100p

C450

100p

J405

D352

1SR154-400TE-25

C350

0.47

C352

0.47

RY301

2.2k

R301

100k

R467

47k

R304

47k

R470

C471

10
50V

1k

R466

1k

R455

1k

R405

1k

R408

C458

4.7

50V

C408

4.7
50V

1k

R458

0

R354

15k

R348

C547

10 50V

C546

10 50V

CL300

CL301

CL302

CL303

CL304

CL305

CL306

CL307

CL308

CL309

CL310

CL311

CL312

CL313

CL314

CL315

CL316

CL317

CL318

CL319

CL320

CL321

CL322

CL323

CL324

CL326

CL327

CL328

CL329

CL335

CL336

CL337

CL338

CL340

CL341

CL344

CL345

CL346

CL347

CL378

CL379

CL376

CL377

CL348

C489

2200p

C491

10p

C499

2200p

C490

10p

C488

0.1

CL325 CL392

CL382

CL381

CL333

C351
100
16V

C353

100
16V

220R450

220R449

1k

R357

C380

10 50V

C381

10 50V

C382

10 50V

C383

10 50V

C384

10 50V

C385

10 50V

C386

10 50V

C387

10 50V

1k

R380

1k

R381

1k

R382

1k

R383

1k

R384

1k

R385

1k

R386

1k

R387

220p

C388

C389 220p

1k

R388

1kR389

C390

3300p

C399

100p

C398

100p

C391

3300p

C392

3300p

C393

3300p

C394

3300p

C395

3300p

C396

3300p

C397

3300p

D301

DA2J10100L

GND

HPFN

LPF01

LPF02

LPFN2

LPFN1

SWVOL

VCC

DGND

DATA

CLK

VEE

FROUT

FLOUT

SWOUT

COUT

SROUT

SLOUT

SBROUT

SBLOUT

GND

GND

SUB2L

SUB2R

RECL3

RECR3

RECL2

RECR2

RECL1

RECR1

GND

SBL IN2

SBR IN2

SL IN2

SR IN2

C IN2

SW IN2

FL IN2

FR IN2

GND

INL12

INR12

INL11

INR11

INL10

INR10

INL9

INR9

INL8

INR8

INL7

INR7

INL6

INR6

INL5

INR5

INL4

INR4

INL3

INR3

INL2

INR2

INL1

INR1

GND

SBLIN

SBRIN

SLIN

SRIN

CIN

SWIN

FLIN

FRIN

GND

ADC ROUT

ADC LOUT

GND

SUB1 R

SUB1 L

GND

J409

2315476

J401

R302
100

C401

10p

C402

10p

CNP411

19P

+7V

NC

-7V

ADCL OUT

AGND

AGND

ADCR OUT

DAC FR IN

DAC FL IN

DAC SW

DAC C

DAC SR IN

DAC SL IN

DAC SBR IN

DAC SBL IN

DCAC

TUNER_R

TUNER_L

19

TUNER_L

CNP410

19P

NC

1+3.3V

DGND

REG_TEMP

HP_RY

PREOUT_SW_ RY

FL-FR_RY

SBL-R_RY

BRIDGEABLE_RY

C-SLR-RY

PROTECTOR

LIMITER

HP_DET

+15V_TUNER

EVOL_DATA

EVOL_CLK

VIDEO2_R

AGND

VIDEO2_L

2451 3 6789

10 11 12 13

14 15 16 17 18 19 20

59 57 5660 58 55 54 53 52

51 50 49 48

47 46 45 44 43 42 41

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

BD3470KS2

IC400

DIR FUNCTION SELECT

IC400

IC B/D

IC352

KIA7907PI

-7V REG

IC350

KIA7807API-U/PF

IC352

+7V REG

IC350

Q301

RELAY DRIVER

2SC3052EF-T1-LEF

L

R
SA-CD/CD
AUDIO IN

L

R

L R

SAT/CATV
AUDIO IN

L R

VIDEO 1

AUDIO OUT

L R

VIDEO 1
AUDIO IN

SUBWOOFER

AUDIO OUT

TV

AUDIO IN

F

DIGITAL
BOARD

(4/4)

CN2105

(Page 25)

G

DIGITAL
BOARD

(4/4)

CN2114

(Page 25)

9

MAIN BOARD

(4/4)

(Page 30)

4

MAIN BOARD (1/4)

(Page 27)

5

MAIN BOARD (1/4)

(Page 27)

6

MAIN BOARD (2/4)

(Page 28)

8

MAIN BOARD

(4/4)

(Page 30)

(ECE)

C323

10p

C324

10p

STR-DH720/DH720HP

STR-DH720/DH720HP

3030

5-17. SCHEMATIC DIAGRAM – MAIN Board (4/4) –

1

A

B

C

D

E

F

G

H

I

J

K

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

MAIN BOARD (4/4)

2728 29 323133 3430

36

35

37

39

38

1

2

3

4

5

SBL

SBR

SBL_R

SL_OUT

SR_OUT

C_SUR

C_OUT

LR

BRIDGE

FR_OUT

FL_OUT

C

SR

SL

FL

FR

RY920

1

2

3

5

6

8

4

7

2.2k

R921

Q920

RELAY DRIVER

2SC3052EF-T1-LEF

CNP920

5P

R1 (UPPER TAP)

R1 (LOWER TAP)

R1 GND

R1 (LOWER TAP)

R1 (UPPER TAP)

W001

Q360

RELAY DRIVER

2SC3052EF-T1-LEF

Q355

RELAY DRIVER

2SC3052EF-T1-LEF

Q365

RELAY DRIVER

2SC3052EF-T1-LEF

1k

R355

RR13

10

CC13

0.01

RR14

10

CC14

0.01

RR11

10

CC11

0.01

CC12

0.01

RR12

10

CC15

0.01

RR15

10

RR17

10

CC17

0.01

47k

R358

47k

R363

47k

R925

C911

0.1

C910

1SR154-400TE-25

D910 ~ D913

D912

D911

D910

D913

0.1

CL369

CL370

CL371

CL373

CL372

CL393

2.2k

R350

47k

R353

Q350

RELAY DRIVER

2SC3052EF-T1-LEF

F912

T6.3A 250V

F913

T6.3A 250V

47k

R366

1k

R367

RR18

10

CC18

0.01

CL356

CL357

CL358

CL359

CL360

CL361

CL355

JWH603

75

C912

2200
25V

C913
1000
25V

D921

D5SBA60-F

CL374

CL375

C932

0.1

C933

0.1

2.2k

R360

TB503

123456

TB502

1234

D350

DA2J10100L

D365

DA2J10100L

D355

DA2J10100L

D360

DA2J10100L

D920

DA2J10100L

2

3

4

5

CL366

CL367

CL368

F910

T2.5A 250V

F911

T2.5A 250V

CNP930

5P

NC

1

R2 AC

CENTER TAP

NC

R2 AC

C930
6800
71V

C931
6800
71V

R351

33

R365

33

R356

33

R361

33

R920

33

TB504

1

2345

RY360

12V

12

3

4

56

RY355

12V

12

3

4

56

RY365

12V

12

3

4

56

RY350

12V

12

3

4

56

SBR_OUT

SBL_OUT

++- -+--++-

SURROUND

R

L

FRONT

CENTER

L

R

-+ +-

SURROUND BACK/

FRONT HIGH

L

R

SPEAKERS

POWER

TRANSFORMER

(MAIN)

T901

(Page 38)

I

POWER

TRANSFORMER

(MAIN)

T901

(Page 38)

J

9

MAIN BOARD

(3/4)

(Page 29)

7

MAIN BOARD (2/4)

(Page 28)

8

MAIN BOARD

(3/4)

(Page 29)

(ECE)