Sony STR-DE635 Service manual

STR-DE635

SERVICE MANUAL

Ver 1.1 2002. 02

Manufactured under license from Dolby Laboratories
Licensing Corporation.
“DOLBY” and the double-D symbol a are trademarks
of Dolby Laboratories Licensing Corporation.

SPECIFICATIONS

US Model

Canadian Model

AEP Model

AUDIO POWER SPECIFICATIONS:

POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
With 8 Ω loads, both channels driven, from 20 – 20,000 Hz; rated 80 W
per channel minimum RMS power, with no more than 0.09% toral
harmonic distortion from 250 mW to rated output (USA model only).

Amplifier section

Stereo mode USA, Canadian models:

(8Ω 20Hz – 20kHz, THD 0.09%)
80W + 80W

AEP model:

(4Ω DIN, 1kHz)
70W + 70W

Surround mode USA, Canadian models:

(8Ω at 1kHz, THD 0.8%)
Front: 80W + 80W
Centera): 80W
Reara): 80W + 80W

AEP model:

(4Ω DIN, 1kHz)
Front: 70W + 70W
Centera): 70W
Reara): 70W + 70W

a) Depending on the sound field settings and the source, there may be no

sound output.

Dynamic power output 145W + 145W, 8Ω

210W + 210W, 4Ω

Frequency response PHONO: RIAA

equalization curve ±0.5 dB

USA, Canadian models:

CD, MD/TAPE, DVD/LD, TV/SAT,
VIDEO1,2:

AEP model:

CD, MD/TAPE, DVD, TV/LD, VIDEO1,2:
10Hz – 50kHz + 0.5/–2dB (with sound field,
equalizer, and bass boost bypassed)

Inputs (Analog) PHONO:

Sensitivity: 2.5mV
Impedance: 50kΩ
S/Nb): 86dB (A, 2.5mVc))

USA, Canadian models:

5.1CH INPUT, CD,DVD/LD,MD/TAPE,TV/
SAT,VIDEO1,2:

AEP model

5.1CH INPUT, CD,DVD,MD/TAPE,TV/
LD,VIDEO1,2:
Sensitivity: 150mV
Impedance: 50kΩ

S/Nb): 96dB (A, 150mVc))
b) Input short
c) Weighted network, input level

— Continued on next page —

9-928-897-12

2002B1600-1

© 2002.02

FM STEREO FM-AM RECEIVER

Sony Corporation

Home Audio Company

Published by Sony Engineering Corporation

Inputs (Digital) DVD/LD (coaxial):

Sensitivity: –
Impedance: 75Ω
S/N: 100dB (A, 20kHz LPF)
DVD/LD (Optical):
Sensitivity: –
Impedance: –
S/N: 100dB (A, 20kHz LPF)

Outputs MD/TAPE, (REC OUT);

VIDEO1,2 (AUDIO OUT):
Voltage: 150mV,
Impedance: 10kΩ
SUB WOOFER:
Voltage:2V
Impedance: 1kΩ
PHONES:

Accepts low-and high-impedance headphones
BASS BOOST +6dB at 70Hz
Sampling Frequency 48kHz
EQ BASS: 100Hz – 1.0kHz (21steps)

MID: 500Hz – 5.0kHz (21steps)

TABLE: 1.0kHz – 10kHz (21steps)

Gain levels: ±10dB, 1dB step

AM tuner section

Tuning range USA, Canadian models:

With 10-kHz tuning scale:
530 – 1,710kHz
With 9-kHz tuning scale:
531 – 1,710kHz

d)

d)

AEP model

531 – 1,602kHz
Antenna Loop antenna
Usable sensitivity 50dB/m (at 1,000kHz or 999kHz)
S/N 54dB (at 50mV/m)
Harmonic destortion 0.5% (50mV/m, 400kHz)
Selectivity At 9kHz: 35dB

At 10kHz: 40dB
d) You can change the AM tuning scale to 9kHz. After tuning in any AM

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

Video section

Inputs 1Vp-p 75Ω
Outputs 1Vp-p 75Ω

FM tuner section

Tuning range 87.5 – 108.0MHz
Antenna terminals 75Ω, unbalanced
Sensitivity Mono: 18.3dBf, 2.2µV/75Ω

Stereo: 38.3dBf, 22.5µV/75Ω

Usable sensitivity 11.2dBf, 1µV/75Ω
S/N Mono: 76dB

Stereo: 70dB

Harmonic destortion at 1kHz

Mono: 0.3%

Stereo: 0.5%
Separetion 45dB at 1kHz
Frequency response 30Hz – 15kHz + 0.5/–2dB
Selectivity 60dB at 400kHz

General

System Tuner section:

PLL quartz-locked digital synthesizer system

Preamplifier section:

Low-noise NF type equalizer

Power amplifier section:

Pure-complementary SEPP

Power requirements USA, Canadian models:

120V AC, 60Hz

AEP model

230V AC, 50/60Hz

Power consumption USA: 270W

Canada: 285VA
AEP: 200W

AC outlets USA, Canadian models:

2switched, total 100W

AEP model

1switched, max 100W

Dimensions 430 × 364 × 157.5mm

(17 × 145/16 × 61/4 in.)
including projecting parts and controls

Mass (Approx.) USA, Canadian models:

9.5kg (20 lbs. 15 oz.)

AEP model

10.1kg

Supplied accessories FM wire antenna (1)

AM loop antenna (1)
Remote commander RM-PP402 (remote) (1)
R6 (size-AA) batteries (2)
FM antenna adapter (1)

— 2 —

Design and specifications are subject to change without notice.

TABLE OF CONTENTS

SAFETY CHECK-OUT

(US model only)

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 A C 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 microampers).
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. F ollow the manufactur ers’ 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 A C 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 ar e 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)

1. GENERAL ·········································································· 4

2. SERVICEING NOTE ······················································· 6

3. TEST MODE······································································ 6

4. DIAGRAMS

4-1. Block Diagram Main Section ··········································· 7
4-2. Block Diagram Power Section ········································· 9
4-3. Circuit Board Location ····················································· 11
4-4. Schematic Diagram Digital Section(1/3) ······················· 13
4-5. Schematic Diagram Digital Section(2/3) ······················· 15
4-6. Schematic Diagram Digital Section(3/3) ······················· 17
4-7. Printed Wiring Board Digital Section(1/2)····················· 19
4-8. Printed Wiring Board Digital Section(2/2)····················· 21
4-9. Printed Wiring Board Display Section ··························· 23
4-10. Schematic Diagram Display Section······························25
4-11. Printed Wiring Board Surround Section························· 27
4-12. Schematic Diagram Surround Section ···························29
4-13. Printed Wiring Board Rear AMP Section······················· 31
4-14. Schematic Diagram Rear AMP Section ························· 33
4-15. Printed Wiring Board Power Section ····························· 35
4-16. Schematic Diagram Power Section ································ 37
4-17. Printed Wiring Board Video Section ······························ 39
4-18. Schematic Diagram Video Section ································· 41
4-19. Printed Wiring Board Main Section ·······························43
4-20. Schematic Diagram Main Section(1/2) ·························· 45
4-21. Schematic Diagram Main Section(2/2) ·························· 47
4-22. IC Pin Function ································································49
4-23. IC Block Diagrams··························································· 59

To Exposed Metal
Parts on Set

AC

0.15µF

1.5k

Ω

voltmeter
(0.75V)

Earth Ground

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

5. EXPLODED VIEWS

5-1. Front Panel Section ·························································· 62
5-2. Chassis Section································································· 63

6. ELECTRICAL PARTS LIST ·······································64

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH
MARK ! 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 .

— 3 —

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMA TIQUES 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.

Identifying the Parts

Front Panel

SECTION 1

GENERAL

1 1/u switch
2 Function buttons
3 INPUT MODE button
4 5.1CH INPUT button

5 MASTER VOLUME control
6 MUTING button
7 SPEAKERS selector

PHONES jack

8 DISPLAY button
9 DIMMER button
0 A.F.D button/indicator

MODE button/indicator
2CH button/indicator

!¡ MULTI CHANNEL DECODING indicator
!™ BASS BOOST button
!£ EQUALIZER button
!¢ DIRECT button

SHIFT button
Numeric buttons (0 to 9)
AM button (US, Canadian models)
RDS EON button (US, Canadian models)
FM button (US, Canadian models)
AM/FM button (AEP model)
FM MODE button
MEMORY button

— 4 —

!∞ TUNNIG +/- buttons

PRESET +/- buttons

!§ LEVEL button
!¶ SUR button
!• EQ button
!ª Cursor buttons(</>)
@º Jog dial
@¡ SET UP button
@™ NAME button
@£ ENTER button
@¢ RDS PTY button (AEP model)

SECTION 2

SERVICING NOTE

Rear Panel

1 2 3 4 5 6 7

!¡!™!£!¢!∞!§!¶!•!ª

1 ANTENNA
2 DIGITAL
3 5.1 CH INPUT
4 SPEAKERS (FRONT)
5 SPEAKERS (REAR)
6 SPEAKERS (CENTER)
7 WOOFER
8 INPEDANCE SELECTOR
9 AC power cord
!º AC OUTLET

!¡ S-LINK
!™ VIDEO 1
!£ VIDEO 2
!¢ DVD/LD (US, Canadian models)

DVD (AEP model)

!∞ TV/SAT (US, Canadian models)

TV/LD (AEP model)

!§ MONITOR
!¶ MD/TAPE
!• CD
!ª PHONO

1. When the front panel is removed, the VR board is remo ved at the
same time. Consequently the LEDs cannot be turned on and the
sound volume cannot be increased or decreased from the remote
control.

2. When servicing the DIGITAL board, be sure to connect the earth
land of the DIGITAL board with the chassis frame so that the
earth potential of the DIGITAL board must not be floated from
the chassis frame.

SECTION 3

TEST MODE

8

90

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 ENTER, the LEVEL and the EQ buttons
simultaneously, press the po wer [1/u] b utton to turn on the main
power. All segments turn on at the same time, then each segment
turns on press the ENTER button..

FACTORY SET MODE

* All preset contents are reset to the default setting.
* Procedure:
While depressing the SET UP, the LEVEL and the ENTER buttons
simultaneously, press the pow er [1/u] button to turn on the main
power. The message Factry Set appears and the present contents
are reset to the default values.

ALL CLEAR MODE

* All preset contents are cleared when this mode is activated. Use

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

* Procedure:

While depressing the SET UP button simultaneously, press the
power [1/u] button to turn on the main power . The machine enters
the DEMO mode.DEMO mode: Wait a while, then the
demonstration starts. If the power [1/u] button is pressed often
the demonstration has started, the power is turned off, and the
demonstration resumes if the power [1/u] button is pressed again.
ALL CLEAR mode; If the power [1/u] button is pressed often
the machine enters the DEMO mode, but before the demonstration
starts, the display is turned off. Press [1/u] again. No response is
returned. The press [1/u] again. The preset data is cleared and
the machine enters the normal power-on state.

DSP TEST MODE

* It tests whether the DSP works correctly or not. When the DSP

test is activated, the test data is output from the DSP (IC1401:
CXD2712R) of the DIGITAL board and is wr itten in the RAM
(IC1402: IDT71V016S). When the test data is read from the RAM
by the DSP, the data output must be equivalent to the original
data. If they disagree, an error is triggered. Errors can be caused
by the broken data line or defective soldering.

* Procedure

While pressing the SETUP, LEVEL and SUR buttons, press the
POWER button to enter the DSP test mode. The message DSP
TEST MODE appears. When an error occurs, the message DSP2
ERROR is displayed. When ther e is no error , the messag e DSP2
NO ERROR appears and the 1 kHz signal is output to all channels.
Then, the mode can be switched the (SIGN WA VE) (THR OUGH)
and (INPULSE) mode.

AUTOBETICAL MODE (AEP Model only)

* This mode is installed in the Europe models only . When this mode

is used, the receiver scans the broadcasts that can be received by
tuner, and sets up the broadcasts. Be sure to start scanning after
connecting the antenna.
Procedure:
Check that the antenna is connected. Press the POWER button
while pressing the MEMORY button to turn on the power. The
message “Autobetical select” appears and scanning starts by tuner.

VERSION MODE

* When this mode is used, the microprocessor version number is

displayed.

* Procedure:

Press the POWER button while pressing the ENTER, LEVEL,
and SUR buttons to turn on the power . The microprocessor version
number appears as follows.

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 [1/u] button to turn on the main power. The message S.F
Initialize appears and initialization is performed.

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

* 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 [1/u] button to turn on the main po wer.
Either the message AM 9kHz Step or AM 10kHz Step appears.
Select the desired step.

— 5 — — 6 —

STR-DE635

4-1. BLOCK DIAGRAM MAIN SECTION

SECTION 4

DIAGRAMS

US,Canadian

MODEL

TV/SAT

DVD/LD

MD/TAPE

MONITOR

VIDEO 1

VIDEO 2

MODEL

AEP

TV/LD

DVD

PHONO

DVDOPT

COAXIAL

DVD

OUTPUT

INPUT

OUTPUT

INPUT

OUTPUT

INPUT

INPUT

75Ω

FM

AM

L

LCD

LINPUT

LOUTPUT

TM301

ANTENNA

J301

J302

IC001

IR LINK

DET

J001

J201

J202

J203

TUNER UNIT

FM

AM

STEREO

TUNED

DO

4 14 15 13 2 3 1

DO

STEREO

TUNED

MUTING

IC007

1

M OUT

13

V1 IN

15

V1 OUT

9

V2 IN

11

V2 OUT

3

TV

5

LD

ANT LEVEL

T. MUTE

DATA

S DATA

VIDEO SELECT

IC201

S CLK

SW1

SW2

SW3

SW4

SW5

6

RDS

IC1

4

9FM DET

13 14

X1

4.33MHz

L OUT

R OUT

CE

CLK

S LAT

VCC

16

VEE

8

14

10

4

6

2

AEP ONLY

10

12

R CH

EQ AMP

IC302

5

7

SELECT

6

SWITCH

10

IC1005

11
12

14

A

2

9

B

IC202

-5V

3 2

REG

ANT LEVEL

RDS DATA

2

RDS CLK

16

A
B

+5V

-15V

D201

IC1006

A

VIDEO(SW1)77

VIDEO(SW2)76

VIDEO(SW3)

75

72

VIDEO(SW4)

DO

58

TUNED

59

DATA

TMUTE

STEREO

60

84

STEREO

AUTO STOP

4

3

2

8

6

11
10

S DATA

56

DATA

TUNER MUTE

AUDIO SELECT

IC301

CONTROL

CLK

CE

16

14DI15

S DATA

S CLK

S LAT

S LAT

S CLK

57

CLOCK55LATCH

A

108

B

107

DIG IN A

5

9

12

DIG IN B

S DATA

47

EV DATA

US,Canadian

MODEL

DVD/LD

VIDEO2

VIDEO1

TV/LD

DVD

AEP MODEL

S LAT

S CLK

48

EV CLK46EV STB

112

DI

INPUT

INPUT

OUTPUT

110CL111CE115

LTV/SAT

L

LOUTPUT

LINPUT

L

LINPUT

BY SYNC

J305

J304

DIGITAL AUDIO

3

D IN

36

DI

38

CLK

37

CE

33

BP SYNC

I/F RECEIVER

IC1101

CK OUT

12.288M

ERROR

CSFLAG

XMODE

48

25

109

117

118

XMODE

CSFLAG

SELECTOR

IC1502

19

SELECTOR

IC303

27

26

25

24

22

21

DATA

16

13

BCK

14

LRCK

15

22

34

DO

35

AUTO

32

XSTAT E

17

Q1102

XSTAT E

CONTROL

14DI15

S DATA

IC11404

116

113

AUTO

CLK

S CLK

23

20

17

CE

16

S LAT

IC1404

IC1404

X3501

12.288MHz

Q1204

Q1203

D1203

D1202

106

ANALOG/DIG

85

S MUTE

S MUTE

SYSTEM

CONTROL

114

DO

ERROR

DIGITAL AUDIO DECODER

84

SDIA0

85

SDIA1

83

SDBCK0

82

SDWCK0

8

XI

SCK

69

1

SCCLK

IC1201

DOLBY

IC1301

AUDATA0

AUDATA1

AUDATA2

SI

68CS66IC62

2SI4CS5

24

23

22

SO

67

3

IC

SO

IC1403

IC1403

IC1403

IC1403

IC1403

SRAM
IC1402

D0-7

24 17

HD0 HD7

IC304

D0-7

AUDIO CODEC

HRDY

X1401
10MHz

15

SOD

30

29

9

39

4
5

6

7

8

Q1202

LIN+

LIN-

SDTO

MCLK1
BCLK
LRCK

SDTI 1

SDTI 2

SDTI 3

CDTO

44

30

CDTI

IC1503

43

31

CDTI

42CS41PD17

29

CDTO

CCLK

CCLK

28CS32

L OUT1

L OUT3

R OUT3

L OUT2

IC1507

27

IC1505

23

IC1505

24

IC1506

25

DFS

11

Q1507

MUTE
CONT

35

PD

96kHZ

AC MUTE
PROTECT

RY HP
RY FRONT A
RY FRONT B

RY CENTER

RY WOOFER

RY REAR

DISP DATA

DISP CLK

DISP MR

SREQ

SOTO

SINO

MD2
MD0

82
66

104

99

100

101
103
102

50
52
49

51
90RESET

105RY POWER

67STOP

10

9
87
89

IC1504 IC1504

AUDIO DSP

IC1401

113

BCK0

SOA

14

16

XHDCS

XHDCS

CLKO

HRDY

SOB

SOC

CLKI

SOD

26

IC1202

26

XI

X1201
16MHz

XRST

XRST

2

3

4

99

100

5

13

Q1201

27

92XO93

114

BCK1

115

LRCK0

116

LRCK1

117

SIA

118

SIB

119

SIC

D0-7

A0-7

74

XWE

70

XOE

16
20

HD0

.

23

HD7

25

15

HA0

XHDWR

9

IC1202

13

25

HA0

XHDWR

2CH L

MUTE

Q1502

MUTE

Q1506

MUTE

Q1505

MUTE

Q1504

IC1510

IC1508

IC1508

IC1509

L OUT

17

C OUT

25

W OUT

21

L

27

C

2

W

24

LS

4

22LS OUT

161415

S DATA

S CLK

S LAT

DATA
CLK
LAT

• RCH is omitted

• Signal Path

: FM

: PHONO

L

C

W

B

SL

: CD

: DVD

AC MUTE
PROTECTOR

HP RY

D1201

SP/A RY
SP/B RY

RY CENTER
RY WOOFER
REAR SP RY

U DATA
U CLOCK
U MREQ

U SREQ
U REST
RESET
RY POWER
STOP

SOT0
SIN1
MD2
MD0

C

D

16

— 7 — — 8 —

4-2. BLOCK DIAGRAM POWER SECTION

+VDD

VOLUME

RV401

L

C

W

IC408

IC410

IC410

B

DATA

SL

CLK
LAT

IC409

DATA
CLK
LAT

DATA
CLK
LAT

DATA
CLK
LAT

VOL CONT

14

IN

9

DATA

8

CLK

10

LAT

VOL CONT

3

IN

IN1415

9

DATA

8

CLK

10

LAT

VOL CONT

14

IN

9

DATA

8

CLK

10

LAT

IC414

IC416

IC415

OUT

15

OUT

2

OUT

OUT

15

M

Q120

LED

DRIVE

AC MUTE

PROTECTOR

RY HP

SP/A RY

C

SP/B RY

RY CENTER

RY WOOFER

RY REAR

RY POWER

STOP

RESET

URESET

USREQ

UMREQ

UCLOCK

D

UDATA

SOTO

SIN1
MD2
MD0

RDS DATA

RDS CLK

A

ANT LEVEL

IC105

2

5

MOTOR

DRIVE

4

8

54

RDS DATA

53

RDS CLK

46

RDS SIGNAL

6

VOLUME

55

UP

56

DOWN

Q501,503

-VDD

+VDD

-VDD

+VDD

-VDD

MUTE

STR-DE635

Ver 1.1 2002. 02

POWER AMP(L)

IC501

13 VCC
14
15

6

1

POWER AMP(C/W)

13 VCC
14 VCC
15

8

1 MUT

6

POWER AMP(SL)

13 VCC
14
15

6

1

49

51

20

19

MD0

MD2

SINO

SOTO

38

FUNCTION

KEY

S101,104,107

S140-144

VCC
VEE

IN

MUT

IC601

VEE

IN

IN

IC701

VCC
VEE

IN

MUT

61

UDATA

AD KEY1

+VE

NF

-VE

+VE

NF

-VE

+VE

NF

-VE

62

60

UCLOCK

S102,105,108

2

5

3

12

9

11

2+VE
3-VE

2

5

3

58

UMREQ

URESET

39

FUNCTION

KEY

S110-114

59

AD KEY2

Q504, Q505

BIAS

Q604, Q605

BIAS

Q704, Q705

BIAS

USREQ

S103,106,109

40

FUNCTION

KEY

S115-119

AD KEY3

BOOSTER

BOOSTER

BOOSTER

BOOSTER

BOOSTER

BOOSTER

RV101

75

JOG UP

Q506

Q507

Q606

Q607

Q706

Q707

76

JOG DOWN

41

FUNCTION

KEY

S120-126

CUR DET

Q598

CUR DET

Q698

CUR DET

Q798

PROTECTOR

Q547-549

D100,101,104-106

2EQ1

5

4

3

B.B

D.D

DCS

MUTE

MODE CONTROL

IC102

AD KEY4

AD KEY5

43

FUNCTION

KEY

S127-133 S134-139 S151

44

FUNCTION

KEY

AD KEY6

FUNCTION

S145-149

AF DETECTOR

Q509,510

AF DETECTOR

Q609,610

AF DETECTOR

Q709,710

D151,152
D154-170

..

915 20 2917

LED DRIVER

IC106

87

88

LED DATA

AD KEY7

44

KEY

89

LED CE

LED CLK

19181716

90

LED CLR

64

SPEAKER

SWITCH

SP A

65

Q511

Q611

SP B

66

S150

POWER

FL CLK

POWER KEY

21

34

CLK24CLR

FL DRIVE FL DRIVE

F2

82

24

26

X101

16MHz

XO

FL LAT

LAT

DIN

RELAY

DRIVE

Q601

RELAY

DRIVE

Q546

RELAY

DRIVE

Q596

83

XI

FL CLEAR

25

3

29

FL101

FLOURESCENT

INDICATOR TUBE

RELAY

DRIVE

Q645

RELAY

DRIVE

Q681

RELAY

DRIVE

Q745

DOUT

RY602

RY501

RY502

CLK

RY601

RY681

RY701

7

FL DAT

ABUS OUT

82

67

4LS29

5CL30

DIN

IC104IC103

F1

Q109

I/O

BUFFER

POWER RY

63

R CH

R CH

SIRCS

URESET

RESET

STOP

ABUS A1 IN

R CH

J701

PHONES

L

A

JJ103

WOOFER

B

SURROUND

D1209

Q101

TM501
FRONT

SPEAKER

TM701

SPEAKER

+5V

+15V

-15V

+32V

+VDD

-VDD

DIGITAL PWB
FROM SUFFIX-12

DISP µCOM+5.6V

IC101

REMOTO
CONTROL
RECEIVER

RESET
Q108

1

CONT µCOM ETC

D1211

IC404

+5V
REG

Q801
+32V

REG

SWITCH

Q613

DISP +5V

CODEC +5V

DIGITAL +5V

D1208

+6.2
REG

Q1205

RESET
IC1206

3

3

3

+24V

3

58

6

R

L

R

C

S(L)

S(R)

26

58

77

47

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

• Signal Path

IC401
+15V

1

REG

IC402

-15V
2

REG

D801

IC1207

+5V

3

1

REG

IC1501

+5V

1

3

REG

IC1203

+3.3V

1

3

REG

IC1204

+5V

1

3

REG

IC1205

+6.2V

1

3

REG

D901-904

J204

S-LINK

RELAY
DRIVE

Q901

:FM

:CD

D802-805

D806-809

T902

F801

F802

RY901

S801

IMPEDANCE

SELECTOR

F803

F804

F805

F2

F1

84

JW927

JW928

T901

F901

AEP

MODEL

F903

US,Canadian

MODEL
JW925

CNJ901

AC OUTLET

CNP901

AC IN

— 9 — — 10 —

STR-DE635

R

4-3. CIRCUIT BOARD LOCATION

AC board

DC board

DISPLAY board

SP-SW board

H.P board

SW board

LED board

4/8 board

ROTARY board

SP board

REAR AMP board

VOLUME board

MUTING board

VIDEO board

MAIN board

DIGITAL board

TUNE
board

JOINT(H) 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.

• 2 : nonflammable resistor.

• 1 : fusible resistor.

• C : panel designation.

Note:

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

• U : B+ Line.

• V : B– Line.

• H : adjustment for repair.

• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM

• Voltages are tak en with a VOM (Input impedance 10 MΩ).
Voltage v ariations may be noted due to normal production
tolerances.

• Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

F : FM
J : CD
c : DIGITAL
I : PHONO

• Abbreviation
CND :Canadian model

W or less unless otherwise

4

Note:

Les composants identifiés par
une marque ! 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.

• ® : Through hole.

• b : Pattern from the side which enables seeing.

• Wavef orm
DIGITAL Board

1 IC1201 (™ (XO)

4.0Vp-p

4MHz

2 IC1401 (CLKO)

3 IC1404 25

100

3.5Vp-p

10MHz

5.5Vp-p

12.288MHz

DISPLAY Board

4 IC102 *™ (XO)

3.6Vp-p

16.0MHz

5 IC12 !§ (X OUT)

3.8Vp-p

7.28MHz

TUNER Board

6 IC1 !£ (X 1)

2.7Vp-p

4.33MHz

— 11 — — 12 —

4-4. SCHEMATIC DIAGRAM DIGITAL SECTION(1/3) • See page 19 for Printed Wiring Board. • See page 12 for Waveforms. • See page 49 for IC Pin Functions.

STR-DE635

— 13 — — 14 —

STR-DE635

Ver 1.1 2002. 02

4-5. SCHEMATIC DIAGRAM DIGITAL SECTION(2/3) • See page 19 for Printed Wiring Board. • See page 12 for Waveforms. • See page 51 for IC Pin Functions. • See page 60 for IC Block Diagrams.

DIGITAL PWB

CXD9511Q

FROM SUFFIX-12

— 15 — — 16 —

4-6. SCHEMATIC DIAGRAM DIGITAL SECTION(3/3) • See page 19 for Printed Wiring Board. • See page 54 for IC Pin Functions. • See page 60 for IC Block Diagrams.

STR-DE635

— 17 — — 18 —

STR-DE635

4-7. PRINTED WIRING BOARD DIGITAL SECTION(1/2) • See page 11 for Circuit Boards Location.

12

A

B

C

D

34567891011121314

E

F

G

H

• Semiconductor Location

Ref. No. Location Ref. No. Location

D1001 E-2
D1101 C-3
D1102 C-6
D1208 A-9
D1209 D-12
D1211 A-9
D1501 F-11
D1504 G-11
D1505 H-11

IC1005 D-2

IC1007 E-2
IC1101 C-2
IC1102 C-6
IC1201 C-7
IC1202 F-6
IC1301 C-4
IC1401 F-5
IC1402 F-3
IC1403 E-3
IC1404 D-3
IC1502 G-10

Ref. No. Location

IC1503 F-8
IC1504 F-10
IC1505 G-7
IC1506 G-8
IC1507 G-9
IC1508 G-12
IC1509 F-12
IC1510 E-12
IC1554 E-10

Q1201 E-6

Ref. No. Location

Q1202 E-6
Q1501 E-11
Q1502 F-11
Q1503 F-11
Q1504 G-11
Q1505 G-11
Q1506 H-11
Q1507 E-11

— 19 — — 20 —

4-8. PRINTED WIRING BOARD DIGITAL SECTION(2/2) • See page 11 for Circuit Boards Location.

STR-DE635

Ver 1.1 2002. 02

A

B

C

D

12

44

23

345678910111213

DISPLAY BOARD

(Page 36)

(Page 24)

39

E

F

G

H

35

36

40

• Semiconductor Location

Ref. No. Location Ref. No. Location

D1002 C-12
D1201 C-7
D1202 B-8
D1203 B-9
D1204 C-2
D1205 C-2
D1206 C-4
D1207 C-4
D1210 B-10

IC1001 D-13

IC1006 C-12
IC1203 A-3
IC1204 A-3
IC1205 C-4
IC1206 D-5
IC1501 C-5

Q1203 B-9
Q1204 C-8
Q1205 C-3

43

DIGITAL PWB FROM SUFFIX-12

(Location B-6)

— 21 — — 22 —

STR-DE635

4-9. PRINTED WIRING BOARD DISPLAY SECTION • See page 11 for Circuit Boards Location.

12

A

B

C

27

D

34567891011121314

21

(Page 22)

(Page 28)

(Page 40)

D108

E

F

• Semiconductor

Location

Ref. No. Location

D102 A-4
D103 B-4
D104 B-3
D105 C-3
D106 C-2
D107 B-13
D108 D-6
D113 D-6
D180 D-6

Ref. No. Location

IC101 C-4
IC102 E-8
IC103 C-7
IC104 B-6
IC105 B-2

Q101 C-4
Q102 E-9
Q108 D-9
Q109 D-6
QQ1 C-2

27

28

— 23 — — 24 —

4-10. SCHEMATIC DIAGRAM DISPLAY SECTION • See page 12 for Waveforms. • See page 56 for IC Pin Functions. • See page 59 for IC Block Diagrams.

STR-DE635

D113

AEP MODEL

EXCEPT AEP

— 25 — — 26 —

STR-DE635

4-11. PRINTED WIRING BOARD SURROUND SECTION • See page 11 for Circuit Boards Location.

12

A

B

C

D

34567891011121314

AEP

RDS PTY

AEP MODEL

RDS

ON

EXCEPT

AEP

FM/
AM

AEP MODEL

AEP

E

F

G

H

I

16

23

23

28

• Semiconductor

Location

Ref. No. Location

D101 I-4
D120 G-11
D121 G-11

24

D151 B-4
D152 C-5
D154 A-6
D155 C-9
D156 A-4
D157 B-1
D158 D-4
D159 B-6
D160 C-6
D161 C-7
D162 C-8
D163 C-10
D164 B-10
D165 B-9
D166 B-8
D167 B-7
D168 B-6
D169 C-1
D170 A-5

— 27 — — 28 —

4-12. SCHEMATIC DIAGRAM SURROUND SECTION

STR-DE635

— 29 — — 30 —

STR-DE635

(Page 44)

(Page 43)

(Page 43)

(Page 44)

(Page 43)

12

A

B

C

D

E

F

G

H

I

3456789101112

16

4-13. PRINTED WIRING BOARD REAR AMP SECTION • See page 11 for Circuit Boards Location.

• Semiconductor

Location

Ref. No. Location

D701 H-9
D702 H-10
D703 H-10
D704 H-10
D705 F-3
D706 F-4
D749 F-9
D751 G-2
D752 H-2
D753 H-2
D754 H-3
D798 F-11
D799 F-3

IC701 G-6

Q704 G-10
Q705 H-10
Q706 H-9
Q707 H-11
Q708 G-11
Q709 F-3
Q710 F-4
Q754 G-3
Q755 H-3
Q756 H-2
Q757 H-4
Q758 G-4
Q798 F-11
Q799 G-4

— 31 — — 32 —