Sony STRDE-675 Service manual

STR-DE675

SERVICE MANUAL

Ver 1.2 2003. 05

Photo : GOLD

Dolby Laboratories Licensing Corporation.
“DOLBY” the double-D symbol ; “AC-3” and “PRO LOGIC”
are trademarks of Dolby Laboratories Licensing Corporation.

SPECIFICATIONS

AUDIO POWER
SPECIFICATIONS

POWER OUTPUT AND
TOTAL HARMONIC
DISTORTION:
With 8 ohm loads, both
channels driven, from 20 ­20,000 Hz; rated 100

watts
per channel minimum RMS
power, with no more than

0.09% total harmonic
distortion from 250
milliwatts to rated output
(USA model only).

Amplifier section

US, Canadian MODELS
Rated Power Output at Stereo mode

(8 ohms 20 Hz - 20 kHz,

THD 0.09%)
100 W + 100 W

Reference Power Output

(8 ohms at 1 kHz, THD

0.7%)

1)

Front

: 100 W/ch

1)

Center

: 100 W

Surround

1)

: 100 W/ch

AEP, UK MODEL :
Rated Power Output at Stereo mode

(8 ohms 1 Hz, THD

0.7%)
100 W + 100 W

Reference Power Output

(8 ohms 1 kHz, THD

0.7%)

Front : 100 W/ch
Center : 100 W
Surround : 100 W/ch

Chinese MODEL :
Rated Power Output at Stereo mode

(8 ohms 1 Hz, THD

0.7%)
90 W + 90 W
(at 220 V AC, 50 Hz)
100 W + 100 W

(at 110 V AC, 50 Hz)

Reference Power Output

(8 ohms 1 kHz, THD

10% at 230 V AC, 50 Hz)

Front : 100 W/ch
Center : 100 W
Surround : 100 W/ch

Rated Power Output at Stereo mode

(8 ohms 1 Hz, THD

0.7%)
100 W + 100 W
(at 110 V AC, 50 Hz)

US Model

Canadian Model

AEP Model

UK Model

E Model

Chinese Model

Reference Power Output

(8 ohms 1 kHz, THD

10% at 110 V AC, 50 Hz)
Front : 100 W/ch
Center : 100 W
Surround : 100 W/ch

Others :
Rated Power Output at Stereo mode

(8 ohms 1 Hz, THD 0.7%)

100 W + 100 W

Reference Power Output

(8 ohms 1 kHz, THD 10%)
Front : 110 W/ch
Center : 110 W
Surround : 110 W/ch

1) Depending on the sound field settings and
sources, there may be no sound output.

Frequency response

MULTI CH IN, CD,

MD/TAPE, DVD/
LD, TV/SAT,
VIDEO 1**,
VIDEO 2**, AUX:
10 Hz - 50 kHz +0.5/
–2 dB (with sound
field and equalizer
bypassed)

— Continued on next page —

9-873-845-13

2003E16-1

© 2003.05

FM STEREO FM-AM RECEIVER

Sony Corporation

Home Audio Company
Published by Sony Engineering Corporation

STR-DE675

Ver 1.2 2003. 05

Inputs (Analog)

MULTI CH IN, CD,

DVD/LD, MD/
TAPE, TV/SAT,
VIDEO 1**,
VIDEO 2**, AUX:
Sensitivity: 250 mV
Impedance: 50 kilohms

a)

S/N

: 96 dB (A, 250 mV

a) Input short.
b) Weighted network, input level.

Inputs (Digital)

DVD/LD (coaxial):

Sensitivity: —
Impedance: 75 ohms
S/N: 100 dB (A, 20 kHz LPF)

DVD/LD, TV/SAT,

MD/TAPE**
(Optical):

Sensitivity: —
Impedance: —
S/N: 100 dB (A, 20 kHz LPF)

Outputs

MD/TAPE, (OUT);

VIDEO 1**,
VIDEO 2** (AUDIO
OUT):
Voltage: 250 mV,
Impedance: 10 kilohms

SUB WOOFER:

Voltage: 2 V
Impedance: 1 kilohms

PHONES:

Accepts low- and
high-impedance
headphones

EQ

Sampling Frequency

–6 dB

48 kHz (TV/SAT, MD/

TAPE OPTICAL IN)

96 kHz (DVD/LD

OPTICAL IN,
COAXIAL IN)

FM tuner section

Tuning range

Antenna terminals

Intermediate frequency

Sensitivity

Usable sensitivity

S/N

Harmonic distortion at 1 kHz

Separation

Frequency response

Selectivity

87.5 - 108.0 MHz

75 ohms, unbalanced

10.7 MHz

Mono: 18.3 dBf,

2.2 V/75 ohms

Stereo: 38.3 dBf

22.5 V/75 ohms

11.2 dBf, 1 V/75 ohms

Mono: 76 dB
Stereo: 70 dB

Mono: 0.3%
Stereo: 0.5%

45 dB at 1 kHz

30 Hz - 15 kHz +0.5/—2 dB

60 dB at 400 kHz

AM tuner section

US, Canadian MODELS :
Tuning range

With 10-kHz tuning

scale: 530 - 1710 kHz

With 9-kHz tuning

scale: 531 - 1710 kHz

b)

)

AEP, UK MODELS :
Tuning range

Others :
Tuning range

531 - 1602 kHz

530 - 1610 kHz (10 kHz step)
531 - 1602 kHz (9 kHz step)
530 - 1610 kHz (10 kHz step)
531 - 1602 kHz (9 kHz step)

Antenna

Intermediate frequency

Loop antenna

450 kHz

Usable sensitivity

50 dB/m (at 1,000 kHz or 999 kHz)

S/N

Harmonic distortion

54 dB (at 50 mV/m)

0.5 % (50 mV/m, 400 kHz)

Selectivity

At 9 kHz: 35 dB
At 10 kHz: 40 dB

c) You can change the AM tuning interval to 9

kHz. After tuning in any AM station, turn
off the receiver. Hold down the TUNING +
button and press the ?/1 button. All preset
stations will be erased when you change the
tuning interval. To reset the scale to 10 kHz,
repeat the procedure.

Video section

Inputs

Outputs

Video: 1 Vp-p 75 ohms
S-video***:

Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms

Video: 1 Vp-p 75 ohms
S-video***:

Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms

General

System

Power requirements
US, Canadian MODEL :

AEP, UK MODELS :

E MODEL :
Taiwan MODEL :

Mexican MODEL :

Tuner section:

PLL quartz-locked digital
synthesizer system

Preamplifier section:

Low-noise NF type equalizer

Power amplifier section:

Pure-complementary SEPP

120 V

AC, 60 Hz

230 V AC, 50/60 Hz
120/220/240 V AC, 50/60 Hz

110 V AC, 50/60 Hz

120 V AC, 60 Hz

Power consumption
US MODEL :

220W

In standby condition: 1 W

c)

Canadian MODEL :

315 VA

In standby condition: 1 W

c)

AEP, UK MODELS :

210 W

In standby condition: 1 W

E MODEL :

230 W

In standby condition: 1 W

Mexican MODEL :

c)

c)

AC outlets
US, Canadian MODELS :

220 W

In standby condition: 1 W

1 switched, total 120 W/1A Max

Others :

Dimensions

1 switched, total 100 W Max

430 × 308.5 × 157.5 mm
(14.5 × 10.4 × 5.3 in.)

including projecting

parts and controls

Mass (Approx.)

7.5 kg (16 lbs. 9 oz.)

Supplied accessories

¥FM wire antenna (1)
¥AM loop antenna (1)
¥ R6 (size-AA) batteries (2)
¥ Remote commander

RM-PP505 (remote) (1)

Design and specifications are subject
to change without notice.

2

STR-DE675

Ver 1.2 2003.05

SAFETY CHECK-OUT

After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.

LEAKAGE

The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part having
a return to chassis, must not exceed 0.5 mA (500 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 2V AC range are suitable. (See
Fig. A)

MODEL IDENTIFICATION

— BACK PANEL —

MODEL

US model
Canadian model
E model
AEP model
UK model
Malaysia, Singapore model
Chinese model
Taiwan model
Korean model
Mexican model
Argentina model

Parts No.

PA RTS No.

4-232-251-0s
4-232-251-1s
4-232-251-2s
4-232-251-3s
4-232-251-4s
4-232-251-6s
4-232-251-7s
4-232-251-8s
4-234-509-0s
4-234-509-1s
4-234-509-2s

To Exposed Metal

Parts on Set

AC

0.15 µF

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

1.5 kΩ

Earth Ground

Voltmeter
(0.75 V)

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 IDENTIFÉS 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 PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

3

STR-DE675

TABLE OF CONTENTS

1. GENETAL ··········································································· 5

2. TEST MODE ······································································ 7

3. DIAGRAMS

3-1. Circuit Boards Location .....................................................9

3-2. Block Diagrams ................................................................ 10

• Main Section .................................................................. 10

• Power Section ................................................................ 11

3-3. Printed Wiring Board – Digital Section – ........................ 12

3-4. Schematic Diagram – Digital Section (1/3) – ..................13

3-5. Schematic Diagram – Digital Section (2/3) – ..................14

3-6. Schematic Diagram – Digital Section (3/3) – ..................15

3-7. Printed Wiring Board – Main Section – ........................... 16

3-8. Schematic Diagram – Main Section (1/3) – ..................... 17

3-9. Schematic Diagram – Main Section (2/3) – ..................... 18

3-10. Schematic Diagram – Main Section (3/3) – ..................... 19

3-11. Printed Wiring Board – Display Section – .......................20

3-12. Schematic Diagram – Display Section – .......................... 21

3-13. Printed Wiring Board – V ideo Section – .......................... 22

3-14. Schematic Diagram – Video Section – .............................23

3-15. Schematic Diagram – Trans Section – ............................. 24

3-16. IC Block Diagrams ........................................................... 25

3-17. IC Pin Function Description .............................................27

4. EXPLODEO VIEWS

4-1. Front Panel Section .......................................................... 29

4-2. Chassis Section................................................................. 30

5. ELECTRICAL PARTS LIST ······································· 32

4

SECTION 1

GENERAL

STR-DE675

This section is extracted
from instruction manual.

1

SPEAKERS

23 4 5 6 7

/

DISPLAY

DIMMER

PHONES

1 ?/1 switch

Press to turn the receiver on and off.

2 DISPLAY button

Press repeatedly to change the information on the
display window as follows:

Index name of the component or the preset station*

FUNCTION button indication or frequency**

Sound field applied to the program source

* Index name appears only when you have assigned one to the

component or preset station (see page 41). Index name does not
appear when only blank spaces have been entered, or it is the
same as the function button.

** Frequency appears only when the tuner is selected.

m

m

m

3 DIMMER button

Press repeatedly to adjust the brightness of the
display. When you want to turn off the display, set in
the “DIM.RANGE” parameter in the SET UP menu
(page 45).

4

The following buttons operate the built-in tuner. For
details, see “Receiving Broadcasts” starting from page 38.

PRESET TUNING +/– buttons

Scan all preset stations.

TUNING +/- buttons

Scan all the available radio stations.

MEMORY button

Press to memorize a preset station.

SHIFT button

Selects a memory page for preset stations.

FM MODE button (AEP, UK, Argentina model only)

If “STEREO” flashes in the display and the FM stereo
reception is poor, press this button. You will not have
the stereo effect but the sound is improved.

FM button

Selects the FM band.

AM button

Selects the AM band.

5

MULTI CHANNEL DECODING indicator

This indicator lights up when the unit is decoding
signals recorded in a multi channel format.

6 Use the CINEMA STUDIO EX buttons to enjoy the

CINEMA STUDIO EX sound effects.

A/B/C buttons

Press to activate the CINEMA STUDIO EX A, B or C
sound field (page 29).

MULTI CHANNEL DECODING

LEVEL

PRESET

– + – +

TUNING

MEMORY SHIFT FM MODE FM AM

TUNING

SURR

EQ

7 Use the SOUND FIELD buttons to enjoy surround

sound. For details, see “Enjoying Surround Sound”
starting from page 27.

A.F.D. button / indicator

Press to set the receiver to automatically detect the
type of audio signal being input and perform proper
decoding (if necessary).

MODE button / indicator

Press to activate the sound field selection mode (page 28).

2CH button / indicator

Press to output sound from only the front (left and
right) speakers.

8 INPUT MODE button

Press to select the input mode for your digital
components (DVD/LD, TV/SAT and MD/TAPE).
Each press switches the input mode of the currently
selected component.

Select To

AUTO

DIGITAL (OPTICAL) Specify the digital audio signals

DIGITAL (COAXIAL) Specify the digital audio signals

ANALOG Specify the analog audio signals

Note

If 96 kHz digital signal is input, the tone, sound field and
surround parameters do not function.

Give priority to digital signals
when there are both digital and
analog connections. If there are no
digital signals, analog is selected

input to the DIGITAL OPTICAL
input jacks

input to the DIGITAL COAXIAL
input jacks (DVD/LD only)

input to the AUDIO IN (L and R)
jacks

9 Function buttons

Press one of the buttons to select the component you
want to use.

To select Press

VCR VIDEO 1 or VIDEO 2

DVD or LD player DVD/LD

TV or satellite tuner TV/SAT

MD or Tape deck MD/TAPE

CD player CD

Built in tuner TUNER

An audio component AUX

After selecting the component, turn on the component
you selected and play the program source.

• After selecting VCR, DVD player, or LD player, turn on the
TV and set the TV’s video input to match the component
you selected.

SET UP

NAME

ENTER

CINEMA STUDIO EX

A

SOUND FIELD

A.F.D.

BC

MODE 2CH

89

VIDEO 1

VIDEO 2CDDVD/LD

TV/SAT

MD/TAPE

INPUT MODE

EQUALIZER

MULTI CH IN

MUTING

qdqf

0 MASTER VOLUME control

After turning on the component you selected, rotate to
adjust the volume.

qa MUTING button

Press to mute the sound. MUTING appears in the
display when the sound is muted.

qs EQUALIZER button

Press to turn the equalizer on or off. The EQ indicator
in the display lights when the equalizer is turned on.
When you adjust the equalizer using the EQ
parameters (page 36) the settings are stored
automatically and can be reproduced wherever you
turn on the equalizer.

• The equalizer is not compatible with 96 kHz digital audio
signals and during MULTI CH IN input.

z When you want to listen to an analog source

without any digital processing

Do the following to bypass the sound field and equalizer
circuits.
1 Press 2CH.
2 Press EQ to turn off the EQ indicator.
The result will be a sound that is highly faithful to the
program source.

qd MULTI CH IN button

Press to enjoy the audio source connected to the
MULTI CH IN jacks with the video from the selected
component. Press again to cancel MULTI CH IN.

• When the MULTI CH IN is selected, the tone, equalizer,
and sound field effects do not function.

qf SPEAKERS button

Press SPEAKERS button to ON.

PHONES jack

Connects headphones.

• When you connect the headphones, no sound will come
from the speakers.

–

TUNER

MASTER VOLUME

+

0qaqs

AUX

5

STR-DE675

qg

/

SPEAKERS

PHONES

qg EQ button

Press to activate the equalizer parameters (page 36).
The indicator on the button lights up and you can
adjust the various equalizer parameters.

qh SURR button

Press to activate the surround parameters (page 34).
The indicator on the button lights up and you can
adjust the various surround parameters (effect level,
wall type, etc.).

qj LEVEL button

Press to activate the speaker level parameters (page

35). The indicator on the button lights up and you can
adjust the various speaker level parameters (front
balance, surround balance, etc.).

qk SET UP button

Press to activate the setup mode, then use the cursor
buttons (wa) to select any of the following indications.
You can then make various settings using the jog dial
(ws).

When you select You can

Speaker type Specify the type of speakers.

Speaker setup Specify the front, center,

DISPLAY

DIMMER

MEMORY SHIFT FM MODE FM AM

PRESET

– + – +

TUNING

TUNING

(page 17)

surround speaker sizes, the
surround speaker position, and
whether or not you are using a
sub woofer. (page 17)

qh qj qk ql

MULTI CHANNEL DECODING

LEVEL

SURR

EQ

SET UP

NAME

ENTER

w;waws

When you select You can

Speaker Distance Specify the front, center, and

MULTI CH IN video input Specify the video input to be

Dimmer range Specify the display to turn off

ql NAME button

Press to activate the name function and enter names
for preset stations and program sources (page 43).

w; ENTER button

Press to enter individual characters for the preset
station and program source names.

wa Cursor buttons (

Press to select various speaker level, surround, and
equalizer parameters (etc.).

ws Jog dial

Turn to adjust the selected speaker level, surround,
and equalizer parameters (etc.).

CINEMA STUDIO EX

A

SOUND FIELD

A.F.D.

BC

MODE 2CH

VIDEO 1

MD/TAPE

INPUT MODE

EQUALIZER

MULTI CH IN

surround speaker distances.
(page 19)

used with the audio signals from
the MULTI CH IN jacks. (page

45)

when you press the DIMMER
button several times. (page 45)

–

MUTING

/ )

VIDEO 2CDDVD/LD

TUNER

MASTER VOLUME

+

TV/SAT

AUX

6

SECTION 2

SL

C

SR

SP.OFF

( ( ( ) ) )

DIGITAL

OPT MULTI CH IN

DTS MONO MEMORY

NEWSEQ

dB
Hz
ft.

TEST MODE

STR-DE675

FACTORY PRESET MODE

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

While depressing the VIDEO 1 and the 2CH buttons simul­taneously, press the po wer

button to turn on the main power .

?/1

The message FACTORY appears and switch off the set.
While depressing the VIDEO 1 and the 2CH buttons simul­taneously, press the power

button again. The message

?/1

FA CTOR Y appears and the present contents are reset to the def ault
values.

AM CHANNEL STEP 9 KHZ/10 KHZ
SELECTION MODE

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

channel step.

* Procedure:

Set the FUNCTION to AM. Turn off the main power.
While depressing the TUNING+ button or the
PRESET TUNING+ button, press the power

button to turn

?/1

on the main power. Either the message 9 k STEP or 10 k STEP
appears. Select the desired step.

* For US/Canadian/E model only

DSP VERSION DISPLAY MODE

* DSP version is displayed.
* Procedure :

While depressing the MD/TAPE and the A.F.D buttons simul­taneously, press the po wer

button to turn on the main power .

?/1

“ DSP ”and the version are displayed.

FLUORESCENT INDICATOR TUBE TEST MODE

* All fluorescent segments are tested. When this test is activated,

all segments turn on at the same time, then each segment turns on
one after another.

* Procedure:

While depressing the MD/T APE and the SHIFT b uttons simul­taneously, press the po wer

1. All segments turn on.

SLEEP

SW

SP.OFF

LSLCR

( ( ( L F E ) ) )

SSR

DIGITAL

OPT COAX MULTI CH IN

PRO LOGIC DTS MPEGSTEREO MONORDS MEMORY

D

D

All LED turn on.

2. Press the VIDEO 1 button, confirm display

D

SLEEP

SW

LR

L F E

S

D

PRO LOGIC MPEGSTEREO RDS

COAX

MULTI CHANNEL DECODING (blue), Digital Cinema Sound ,
LEVEL , SET UP , A.F.D and MODE LED turn on.

button to turn on the main power .

?/1

dB

kHz
mft.
MHz

k
m

MHz

MUTINGINFONEWSTAEQD.RANGE

MUTINGINFOTAD.RANGE

3. Press the VIDEO 1 button, confirm display

EQ , SUR , NAME and 2CH LED turn on.

4. Press the VIDEO 1 button, All segments turn off.

5. Every pressing of the VIDEO 1 button turns on each
segment and LED one after another in the same order.
(Not only the VIDEO 1 button, but also the other buttons such
as VIDEO 2 , DVD/LD , TV/SAT , MD/TAPE , CD ,
TUNER and AUX can be used.)

SOUND FIELD CLEAR MODE

* The preset sound field is cleared when this mode is activated.

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

* Procedure:

While depressing the SOUND FIELD MODE button, press the
power

button to turn on the main power. The message

?/1

SURR. CLR. appears and initialization is performed.

DEMONSTRATION MODE

* Demonstration is performed.
* Procedure :

While depressing the SET UP button, press the power

?/1

button. The message appears and demonstration is performed.

* To finish DEMONSTRATION MODE, press the power

?/1

button while the introduction message appears in the display.

SOFTWARE VERSION DISPLAY MODE

* The software version is displayed.
* Procedure:

While depressing the TUNER and the SHIFT buttons
simultaneously, press the power

button to turn on the main

?/1

power . The model name, destination and the software version are
displayed.

KEY CHECK MODE

* Button check
* Procedure:

While depressing the VIDEO 1 and the SHIFT buttons
simultaneously, press the po wer
power.
“REST 37” appears.
Every pressing of any button other than ?/1 and SPEAKERS
counts down the buttons. The b uttons which are already counted
once are not counted again. When all buttons are pressed “REST
00” appears.
When MASTER VOLUME is rotated in clockwise direction,
“VOL MIN”, “VOL 1” to “VOL 48”, “VOL MAX” appear.

button to turn on the main

?/1

7

STR-DE675

DSP TEST MODE

* DSP tests are performed.
* Procedure :

1. While depressing the LEVEL and CD buttons simultaneously,
press the power ?/1 Button to turn on the main power.

2. Press the NAME button.

3. Select the item by pressing Cursor button ( < or > ).

4. Select the function by turning Jog dial if selection is necessary.

Items

SWAP

DSP communication

Bass Management

Main Speaker cut off Freq.

LFE cut off Freq.

Co-ef. Read Address

Co-ef. Read Data

Co-ef. Write Address

Co-ef. Write Data

SRAM

Function

NORM

ALL

C SW

SLSR

–

–
–
–
–
–
–
–

OFF

ON

Description

Normal channel output
Left input t Front Left, Surround Left, Center channel output
Right input t Front Right, Surround Right, Sub Woofer channel output
Left input t Center channel output
Right input t Sub Woofer channel output
Left input t Surround Left channel output
Right input t Surround Right channel output
When this item is selected the message will be displayed “ OK ” if the

checking is correct. “ ERROR ” will be displayed in a case of an error.
Not used for service
Not used for service
Not used for service
Not used for service
Not used for service
Not used for service
Not used for service
“ RAMC. OFF ” will be displayed in a case of no checking.
By turning Jog dial “ RAMC. EXE ” will be displayed during the

checking.
After a while “ RAMC. PASS ” will be displayed if the checking is good.

“ RAMC. NG ” will be displayed if an error occurs.

Remark

Selection of setting
output channels

Checking communication
between DSP and microcom

Checking communication
between DSP and SRAM

8

SECTION 3

DIAGRAMS

STR-DE675

Ver 1.2 2003.05

3-1. CIRCUIT BOARDS LOCATION

STBY board

POWER SWITCH board

HEADPHONE board

DISPLAY board

JOG board

IMPEDANCE SELECT board (US, Canadian model)
AC SEL board (E model)

VIDEO board

S-VIDEO board

TUNER UNIT

DIGITAL board

MAIN board

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

For schematic diagrams.
Note:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

•%: indicates tolerance.

f

•

• 2 : nonflammable resistor.

• 1 : fusible resistor.

• C : panel designation.

• A : B+ Line.

• B : B– Line.

• H : adjustment for repair.

•Voltages and waveforms are dc with respect to ground

•Voltages are taken with a VOM (Input impedance 10 MΩ).

•Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

•Abbreviation

: internal component.

Note:

The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.

under no-signal (detuned) conditions.
No mark : FM

Voltage variations may be noted due to normal produc­tion tolerances.

F : FM
J : CD (ANALOG)
c : DVD (DIGITAL)

CND : Canadian model
MY : Malaysia model
SP : Singapore model
TW : Taiwan model
KR : Korea model
MX : Mexican model
AR : Argentina model
CH : Chinese model

W or less unless otherwise

4

Note:

Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.

For printed wiring boards.
Note:

• X : parts extracted from the component side.

a

•

•

• : Pattern from the side which enables seeing.

: Through hole.

f

: internal component.

C

Q

B

E

B

These are omitted.

CE

These are omitted.

• Waveform
DIGITAL Board

1 IC1101 wa (XOUT)

4.4Vp-p

12.288MHz

2 IC1201 9 (MCLK)

3.3Vp-p

13.3MHz

3 IC1301 qf (XO)

2.2Vp-p

4.3MHz

4 IC1601 id (XI)

2.8Vp-p

20MHz

99

STR-DE675

3-2. BLOCK DIAGRAMS – MAIN SECTION –

ANTENNA

— TM301 —

TUNER UNIT

FM

75 Ω

COAXIAL

AM

US, Canadian, Mexican models

J1801

CTRL A1 II

VIDEO OUT

VIDEO 1

VIDEO IN

VIDEO OUT

MONITOR

TV/SAT

VIDEO IN

DVD/LD

VIDEO IN

VIDEO 2

VIDEO IN

TV/SAT

S VIDEO IN

DVD/LD

S VIDEO IN

J1803(1/2)

VIDEO 1

S VIDEO IN

J1802

ANALOG SOUND

PROC.

L CH

FM

AM

STEREO

MUTING

DET OUT

J200

J201

DATA

CLOCK

TUNED

R CH

R-CH

DO

CE

AEP,UK MODEL ONLY

RDS

2

IC1301

4

16

14

13

X1301

4.33MHz

VIDEO SELECT

IC103

IC103

15

SW1

14

V1 OUT

13

V1 IN

SW2

M OUT

TV

LD

V2 IN

Y SWITCH

VIN 2

VIN3

VIN1

C SWITCH

VIN 2

VIN3

VIN1

IC1802

MUTING1
MUTING2

VOUT1

IC1801

VOUT2

MUTING1
MUTING2

VOUT1

10

SW3

4

SW4

6

SW5

2

5VOUT2

SW1

2

SW2

13

11

4

10

5

SW1

2

13SW2

11

4

10

JR1810

1

5

3

9

Y

3

C
Y

1

C
Y

12

C

3

1

12

JR1807

JR1808

11

3

6

8

Y

C

Y

C

BUFFER

Q1607

IC1603

IC1603

IC1603

IC1603

1
2

4
5

9
10

12
13

+5V

J1803(2/2)

VIDEO 1

S VIDEO OUT

J1804

MONITOR

S VIDEO OUT

SYSTEM CONTROL.

IC1601(1/3)

76

DO

86

SDATA

78

SCLK

87

SLATCH

73

STEREO

74

TUNED

75

MUTING

53

RDS DATA

52

RDS CLK

64

CONTROL A1 OUT

65

CONTROL A1 IN

91

MUTING2

90

MUTING1

89

S2

88

S1

DIGITAL

CD

AUX

MD/TAPE

TV/SAT

DVD/LD

VIDEO 1

VIDEO 2

MULTI
CH IN

COAXIAL

OPTICAL

IN

IN

OUT

IN

AUDIO IN

AUDIO IN

AUDIO OUT

AUDIO IN

AUDIO IN

FRONT

SURROUND

SUB WOOFER

CENTER

DVD/LD

IN

DVD/LD

IN

TV/SAT

IN

MD/TAPE

IN

MD/TAPE

OUT

J402

J403

J404

J401

J1101

IC1104
IR LINK

DET

IC1105
IR LINK

DET

IC1106
IR LINK

DET

IC1107
IR LINK

DET

5
6

IC1103

SELECTOR

7

IC1102

35

IC1102

62

7

DIGITAL AUDIO

5

DIN2

3

DIN0

4

DIN1

2

DOUT

35

DO

36

DI

38

CLK

37

CE

34

ERROR

17

XSTATE

48

XMODE

47

CKSEL1

I/F RECEIVER

IC1101

CK OUT

XIN XOUT

22 21

X1101

12.288MHz

LRCK

DATAO

AUDIO CODEC

IC1502

67

AUDIO DSP

IC1201

22

SCK OUT

13

BCK

14
15

16

24AUDIO

KFSI0

29

BCKI2

28

LRCK2

30

SDI2

69

GP8

68

GP9

35

HD OUT

33

HD IN

34

HCLK

36

HCS

32

HACN
PM

113
56

BST

2

XRST

59

EXLOCK

BCKO1

SDO1
SDO2
SDO3

MCLK1

MCLK2

14
20
19LRCKO

18SDI1

23
24
25

IC1202

SRAM

9

X1201

13.5MHz

12

IC1502

21

IC1501

29

L OUT1

L OUT2

L OUT3

R OUT3

27

25

23

24

LIN-

30

LIN+

39

MCLK

4

BCK

5

LRCK

9

SDTO

6

SDTI1

7

SDTI2

8

SDTI3

43

CDT1

42

CCLK

41

CS

17

PD

3

SMUTE

1

L IN8

2

L IN9

3

L IN10

67

L REC3

71

L IN7

70

L IN6

69

L IN5

61

L REC1

62

L IN1

63

L IN2

11

AL IN

13

ASL IN

16

ASW IN

15

AC IN

9

AL OUT

27

DL IN

29

DSL IN

31

DC IN

32

DSW IN

20

DATA

21

CLOCK

22

LATCH

Q1601,1602

MUTING

CONT

IC201

SL OUT

SW OUT

Q379

MUTING
SWITCH

L OUT

C OUT

51

MUTING

Q361

47

MUTING

Q362

L

SL

SL

A

39

MUTING

Q363

35

MUTING

Q364

C

SW

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

• Signal Path

: FM

: CD(ANALOG)

: DVD (DIGITAL)

92

98 97 95 96 99 100 94 1

DO

OPTICAL IN SELECT

93

DI

CE

CLK

ERROR

XMODE

XSTATE

CKSEL1

S139

SPEAKERS

+3.3V

FLASH 1
FLASH 2

RESET

CNS3

MD0
VDD

FLASH

MD2

PROGRAMMING

DATA0

15

DATA

16CE14

24

ANA/DIG

21

F.MUTING

SP SW/FLASH 1

FLASH 2

49MD0

MD1

50

MD2

51
28
27

CLK

20

4

5

7PM3

HCLK

6

BST

HCS

XRST

HACN

SYSTEM CONTROL

IC1601(2/3)

2

18

19

GP9

HD IN

HD OUT

10

12

13CS8PD9

SCL

CDT1

SMUTE

B

1010

– DISPLAY/POWER SECTION –

STR-DE675

Ver 1.2 2003.05

• R-CH is omitted due to same as L-CH

• Signal Path

FL101

FLUORESCENT

INDICATOR TUBE

FL1 FL2

14 29

42 31

SEG1-16

GRID1-12

DIN8CLK9STB

7

BUFFER

IC101

61

62

DIN

CLK63STB

X1

X0

82 83

X1601

20.0MHz

: FM

: CD(ANALOG)

: DVD (DIGITAL)

LED DRIVE

IC100

LEVEL LED

NAME LED

SUR LED

SETUP LED

AD0

38

FUNCTION

KEY

2
3
1
4

D106-109

D100-105

LED DRIVE
Q100-105

40

32

31

AFD LED

MULTI CH LED

AD1

39

FUNCTION

KEY

S101-107S100-117

30

2CH LED

MODE LED

A

25

29

EQ LED

DCS LED

40

FUNCTION

KEY

S118-125

S126

AEP,UK,

Argentina MODEL

R-CH

POWER AMP

IC701

+V OUT2

12

L

SLSL

C

SW

POWER
MUTING

Q747,748

22

AC MUTING

AD2

AD3

41

FUNCTION

KEY

S128-137

8

IN2

-V OUT2

6

IN1

1

MUTING

-V OUT1

POWER AMP

IC501

+V OUT

1

IN+

67

68

PROTECT

SYSTEM CONTROL

IC1601(3/3)

JOG+

JOG-

58

57

3 1

ENCODER

RV101

JOG
DIAL

NF2

9

11

2+V OUT1

NF1

5

3

6

IN-

2

5-V OUT

72

FRONT RY

HEADPHONE RY

ENCODER

RV102

MASTER

VOLUME

70

VOL+60VOL-

3 1

LIMITER

Q701

LIMITER

Q702

LIMITER

Q651

LIMITER

Q652

LIMITER

Q501

LIMITER

Q502

REAR RY

59

71

CENTER RY

BOOSTER

Q703

BOOSTER

Q704

BOOSTER

Q653

BOOSTER

Q654

BOOSTER

Q503

BOOSTER

Q504

69

WOOFER RY

POWER KEY

56

S138

?/1

5

IC401

CURRENT

DETECT

Q705,706

CURRENT

DETECT

Q655,656

CURRENT

DETECT

Q505,506

7

D721

Q722,723,725

PROTECT

SWITCH

AF POWER

PROTECT

Q740

AF POWER

PROTECT

Q640

AF POWER

PROTECT

Q540

26

HP DETECT

IC601

21

POWER RY

66

D731

D733

D734

IC601

57

SIRCS

AVCC
VCC3
VCC5

RESET

STOP

BUFFER

54

Q1603

35
84
23

77

47

RESET

B

RELAY
DRIVE

Q790

RELAY
DRIVE

Q710

RELAY
DRIVE

Q610

RELAY
DRIVE

Q550

RELAY
DRIVE

Q560

RY791

RY701

RY601

RY501

RY560

RESET

Q1604,1605

1

IC102

REMOTE

CONTROL

RECEIVER

R-CH

R-CH

2

IC1904

+3.3V

3 1

REG

TM602

L

R

TM601

SR

SL

C

J405

D1911

AUDIO

OUT

+3.3V

TUNER

+3.3V

AUDIO

+5V

J791

PHONES

FRONT

SURROUND

CENTER

SUB

WOOFER

+3.3V REG

3 1

3 1

POWER AMP

Q471
IC803

+3.3V

REG

IC1503

+5V
REG

SPEAKERS

-B

FL101

-30V

RELAY

+B

AUDIO

+7V

AUDIO

-7V

VIDEO

+5V

VIDEO

-5V

TUNER

+12V

-B SW

Q691,692

-30V REG
Q801

IC1901

+3.3V

+2.5V

+5V T999

IC801

+7V

1 3

REG

IC802

-7V

3 2

REG

IC807

+5V

3 1

REG

IC804

-5V

3 2

REG

IC806

+12V

3 1

REG

+3.3V

3 1

REG

IC1902

+2.5V

3 1

REG

IC1903

+3.3V

3 1

REG

D802

+B

-B

+5.6V REG

Q1606

POWER

8

CONTROL

IC1605

3

6

US,CND MODEL

IMPEDANCE

SELECTOR
4Ω 8Ω

D820-823

5

D1901-1904

S902

D910-913

RELAY
DRIVE

Q901

D811D810

D899

D898

T901

T1

240V
220V
120V

0V

FL1

FL2

F901

T902

D915D914

RY901

F904

JW2003

JW2001

US,CND,E,
TW,MX,CH

JW902

F902

AEP,UK,MY,
SP,AR

JW903

E MODEL ONLY

S901

VOLTAGE

SELECTOR

J911

AC

OUTLET

AC
IN

1111

STR-DE675

3-3. PRINTED WIRING BOARD – DIGITAL SECTION –

IC1102

• Semiconductor

Location

Ref. No. Location

D1001 B-10
D1101 B-2
D1501 C-9
D1502 C-9
D1601 F-1
D1602 G-2
D1603 E-3
D1901 G-7
D1902 G-7
D1903 F-7
D1904 F-7
D1911 G-3
D1912 F-8
D1913 E-3
D1914 E-8

IC1101 C-3
IC1102 B-1
IC1103 B-4
IC1104 B-7
IC1105 B-8
IC1106 B-8
IC1107 B-9
IC1201 D-2
IC1202 C-3
IC1301 D-4
IC1501 C-2
IC1502 C-1
IC1503 D-10
IC1552 C-1
IC1601 F-2
IC1603 B-4
IC1605 G-4
IC1901 F-8
IC1902 F-8
IC1903 G-8
IC1904 F-8

IC1502

IC1552

IC1501

IC1601

• See page 9 for Circuit Boards Location.

IC1103

IC1101

IC1202

IC1201

IC1603

IC1301

There are a few cases that the part printed on
this diagram isn’t mounted in this model.

IC1104

(Page 22)

(Page 16)

IC1105

IC1901

OPTICAL

IC1902

IC1904

IC1107IC1106

(Page 16)

IC1503

(Page 16)

Q1601 F-1
Q1602 F-1
Q1603 G-2
Q1604 G-2
Q1605 G-2
Q1606 G-7
Q1607 E-4

IC1605

IC1903

(Page 24)

(Page 20)

1212

STR-DE675

3-4. SCHEMATIC DIAGRAM – DIGITAL SECTION (1/3) –

• See page 9 for Waveform. • See page 25 for IC Block Diagrams.

3.3

2.1

2.1

2.5

3.3

2.6

2.6
4

1313

STR-DE675

3-5. SCHEMATIC DIAGRAM – DIGITAL SECTION (2/3) –

• See page 9 for Waveform.

1414