Sony STR-DE845 User Manual

STR-DE845/DE945

SERVICE MANUAL

Photo: STR-DE945

Manufactured under license from Dolby laboratories. “Dolby”, “A C-3”, “Pro Logic” and the doubleD symbol ; are trademarks of Dolby Laboratories. Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other worldwide patents issued and pending. “DTS” an d “DTS Digital Surround” are trademarks of Digital Theater Systems, Inc.

SPECIFICATIONS

US Model

Canadian Model

STR-DE845/DE945

E Model

Australian Model

Chinese Model

PX Model

STR-DE845

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 8 ohm loads, both channels driven, from 20 20,000 Hz; rated 110 watts (STR-DE945) and 100 watts (STR-DE845) 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

POWER OUTPUT

Models of area code U, CA Rated Power Output at Stereo Mode

(8 ohms 20 Hz – 20 kHz, THD 0.09 %) STR-DE945: 110 W + 110 W STR-DE845: 100 W + 100 W

Reference Power Output

(8 ohms 1 kHz, THD 0.7 %) STR-DE945: FRONT:

STR-DE845: FRONT

Models of other area code STR-DE845: Rated Power Output at Stereo Mode

(8 ohms 1 kHz, THD 0.7 %)

1)

110 W + 110 W

1)

CENTER

: 110 W

1)

REAR

:

110 W + 110 W

1)

:

100 W + 100 W

1)

CENTER

: 100 W

1)

REAR

:

100 W + 100 W

100 W + 100 W 90 W + 90 W

2)

3)

Reference Power Output

(8 ohms 1 kHz, THD 0.7 %)

(8 ohms 20 Hz – 20 kHz, THD 0.09 %)

(8 ohms 1 kHz, THD 10 %)

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

2) Measured under the following conditions:

Area code Power requirements

AU, E 240 V AC, 50 Hz CN, SP 230 V AC, 50 Hz

3) Measured under the following conditions:

Area code Power requirements

CN 220 V AC, 50 Hz

Frequency response

1)

FRONT

:

100 W + 100 W

1)

CENTER

: 100 W

1)

REAR

:

100 W + 100 W

1)

FRONT

:

95 W + 95 W

1)

CENTER

: 95 W

1)

REAR

:

95 W + 95 W

1)

FRONT

:

135 W + 135 W

1)

CENTER

: 135 W

1)

REAR

:

135 W + 135 W

PHONO: RIAA

equalization curve ±0.5 dB

CD, TAPE, MD/DAT,

MD/TAPE, DVD/ LD, TV/SAT, VIDEO 1, 2, and VIDEO 3: 10 Hz – 50 kHz +0.5/–2 dB (with sound field, equalizer, and bass boost bypassed)

Inputs (Analog)

4) INPUT SHORT

5) Weighted network, input level

Inputs (Digital)

PHONO:

Sensitivity: 2.5 mV Impedance: 50 kilohms

4)

S/N (A, 2.5 mV

5.1CH INPUT, CD, TAPE, MD/DAT, MD/TAPE, DVD/ LD, TV/SAT, VIDEO 1, 2, and VIDEO 3: Sensitivity: 150 mV Impedance: 50 kilohms

4)

S/N (A, 150 mV

DVD/LD IN(Coaxial):

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

DVD/LD IN, TV/SAT

IN, MD/DAT IN (Optical): Sensitivity: – Impedance: – S/N: 100 dB (A, 20 kHz LPF)

: 86 dB

: 96 dB

5)

)

5)

)

Outputs TAPE, MD/DAT, MD/

BASS BOOST +6 dB at 70 Hz

Sampling Frequency

EQ BASS:

TAPE; VIDEO 1, 2 (AUDIO OUT): Voltage: 150 mV, Impedance: 1 kilohms

SUB WOOFER:

Voltage: 2 V Impedance: 1 kilohms

PHONES:

Accepts low- and high-impedance headphones

48 kHz

100 Hz~1.0 kHz (21 steps)

MID:

500 Hz~5.0 kHz (21 steps)

TREBLE:

1.0 kHz~10 kHz (21 steps)

Gain levels:

±10 dB, 1 dB step

– Continued on next page –

FM STEREO/FM-AM RECEIVER

FM tuner section

Tuning range 87.5 - 108.0 MHz

Antenna terminals

75 ohms, unbalanced

Sensitivity Mono: 18.3 dBf,

2.2 µV/75 ohms

Stereo: 38.3 dBf,

22.5 µV/75 ohms

Usable sensitivity

11.2 dBf, 1 µV/75 ohms

S/N Mono: 76 dB

Stereo: 70 dB

Harmonic distortion at 1 kHz

Mono: 0.3% Stereo: 0.5%

Separation 45 dB at 1 kHz

Frequency response

30 Hz – 15 kHz

+0.5/–2 dB

Selectivity 60 dB at 400 kHz

AM tuner section

Tuning range

Models of area code U, CA

With 10-kHz tuning

scale: 530 – 1710 kHz

With 9-kHz tuning

scale: 531 – 1710 kHz

Models of area code AU, CN, SP

With 9-kHz tuning

scale: 531 – 1602 kHz

Models of area code E

Antenna Loop antenna

Usable sensitivity

S/N 54 dB (at 50 mV/m)

Harmonic distortion

Selectivity At 9 kHz: 35 dB

6) You can change the AM tuning scale to 9 kHz y 10 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 scale. To reset the scale to 10 kHz (or 9 kHz), repeat the procedure.

With 10-kHz tuning

scale: 530 – 1610 kHz

With 9-kHz tuning

scale: 531 – 1602 kHz

50 dB/m (at 1,000 kHz

or 999 kHz)

0.5 % (50 mV/m, 400 kHz)

At 10 kHz: 40 dB

6)

Video section

Inputs Video: 1 Vp-p 75 ohms

6)

Outputs Video: 1 Vp-p 75 ohms

S-video:

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

75 ohms

S-video:

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

75 ohms

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

Models of area code U,

CA 120 V AC, 60 Hz

Models of area code

CN, SP 220 – 230 V AC, 50/60 Hz

Models of area code AU

240 V AC, 50 Hz

Models of area code E

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

Power consumption

Models of area code U

STR-DE945: 290 W STR-DE845: 280 W

Models of area code CA

STR-DE945: 345 VA STR-DE845: 335 VA

Models of area code

CN, SP STR-DE845: 220 W

Models of area code AU

STR-DE845: 230 W

Models of area code E

STR-DE845: 320 W

• Abbreviation AU : Australian model CA : Canadian model CN : Chinese model

AC outlets

Dimensions 430 × 158 × 378 mm

Mass (Approx.)

Supplied accessories

• FM wire antenna (1)

• AM loop antenna (1)

• LR6 (size-AA) alkaline batteries (3)

Models of area code U, CA only

STR-DE945 only

STR-DE845 only

Design and specifications are subject to change without notice.

Models of area code U,

CA 2 switched, total 120 W/1A

Models of area code

AU, SP 1 switched, total 100 W

Models of area code E,

CN 2 switched, total 100 W

1

(17 × 6

/4 × 15 in.) including projecting parts and controls

10.3 kg (22 lb 12 oz)

• Audio/video/control S connecting cord (1)

• Control S connecting cord (1)

• Remote commander RM-LJ304

(remote) (1)

• Remote commander RM-LP204 (remote) (1)

MY: Malaysia model SP : Singapore model U : US model

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.

Flexible Circuit Board Repairing

• K eep the temperature of the soldering iron around 270 ˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

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 P ARTS WHOSE P AR T NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

2

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE 0 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.

SAFETY CHECK-OUT

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

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes.). Leakage current can be measured by any one of three methods.

1. A commercial leakage tester , such as the Simpson 229 or RCA WT -540A. Follo w 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 A C voltmeter . The “limit” indica tion 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 A C range are suitable. (See Fig. A)

To Exposed Metal Parts on Set

1.5 k

0.15 µF

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

Ω

Earth Ground

AC voltmeter (0.75 V)

MODEL IDENTIFICATION

– Rear View –

Part No.

Model

DE945: US model DE945: Canadian model DE845: US model DE845: Canadian model

Malaysia and Singapore models Chinese model Australian model E and PX models

Part No.

4-226-871-0s 4-226-871-1s 4-226-871-3s 4-226-871-4s 4-226-871-5s 4-226-871-6s 4-226-871-7s 4-226-871-8s

TABLE OF CONTENTS

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

2. DISASSEMBLY ......................................................... 6

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

4. DIAGRAMS

4-1. Block Diagram – MAIN Section (1/2) – ........................ 11

4-2. Block Diagram – MAIN Section (2/2) – ........................ 12

4-3. Block Diagram

– DISPLAY/POWER SUPPLY Section – ...................... 13

4-4. Note for Printed Wiring Boards and

Schematic Diagrams ...................................................... 14

4-5. Schematic Diagram – DIGITAL Board (1/3) –.............. 15

4-6. Schematic Diagram – DIGITAL Board (2/3) –.............. 16

4-7. Schematic Diagram – DIGITAL Board (3/3) –.............. 17

4-8. Printed Wiring Board

–DIGITAL Board (Component Side) ............................. 18

4-9. Printed Wiring Board

–DIGITAL Board (Conductor Side) ............................... 19

4-10. Printed Wiring Boards

–VIDEO/JOINT (1) (H) Boards (DE845) –................... 20

4-11. Schematic Diagram

–VIDEO/JOINT (1) (H) Boards (DE845) –................... 21

4-12. Printed Wiring Boards

– OSD/OSD JOINT (H) Boards (DE945) – ................... 22

4-13. Schematic Diagram

– OSD/OSD JOINT (H) Boards (DE945) – ................... 23

4-14. Printed Wiring Board – AU SW Board – ....................... 24

4-15. Schematic Diagram – AU SW Board – .......................... 25

4-16. Printed Wiring Board – S-VIDEO Board –.................... 26

4-17. Schematic Diagram – S-VIDEO Board – ....................... 27

4-18. Printed Wiring Board –DISPLAY Board – .................... 28

4-19. Schematic Diagram – DISPLAY Board – ...................... 29

4-20. Printed Wiring Board – MAIN Board – ......................... 30

4-21. Schematic Diagram – MAIN Board (1/3) – ................... 31

4-22. Schematic Diagram – MAIN Board (2/3) – ................... 32

4-23. Schematic Diagram – MAIN Board (3/3) – ................... 33

4-24. Printed Wiring Boards – H.P/MUTING/POWER/

ROTARY/VIDEO 3(DE945)/VOL/

V. SWITCH (E) Boards – ............................................... 34

4-25. Schematic Diagram – H.P/MUTING/POWER/

ROTARY/VIDEO 3(DE945)/VOL/

V. SWITCH (E) Boards – ............................................... 35

4-26. Printed Wiring Boards – BIAS (C)/BIAS (L)

/BIAS (R)/BIAS (LS)/BIAS (RS)/5.1 IN Boards – ....... 36

4-27. Schematic Diagram – BIAS (C)/BIAS (L)

/BIAS (R)/BIAS (LS)/BIAS (RS)/5.1 IN Boards – ....... 37

4-28. Printed Wiring Boards –DC (1)/DC (2) Boards –.......... 38

4-29. Schematic Diagram –DC (1)/DC (2) Boards – .............. 39

4-30. Printed Wiring Boards –AC/SP Boards –....................... 40

4-31. Schematic Diagram – AC/SP Boards – .......................... 41

4-32. IC Pin Function Description ........................................... 46

5. EXPLODED VIEWS................................................ 56

6. ELECTRICAL PARTS LIST ............................... 59

3

SECTION 1

GENERAL

Location of controls

– Front view –

12 34 5

SPEAKERS

A

BOFF

A+B

PHONES

(STR-DE945 only) (STR-DE845 only)

4

DIMMER DISPLAY

INPUT MODE

5.1CH INPUT

5.1CH

VIDEO 1 VIDEO 2 VIDEO 3 DVD/LD TV/SAT

TAPE MD/DAT CD TUNER PHONO

INPUT

CINEMA STUDIO EX.

ABC

SOUND FIELD

A.F.D.

2CH MODE

MULTI CHANNEL DECODING

LEVEL

SUR

EQ

+–

SET UP

NAME

ENTER

BASS BOOSTEQUALIZER

MASTER VOLUME

010

67

PRESET

–+

TUNING

–+

TUNING

MEMORY

2ND AUDIO

FM/AM FM MODE

MUTING

EQUALIZER

VIDEO 3 INPUT

VIDEO L AUDIO R

SHIFT

BASS

BOOST

1 I/1 button 2 Function Buttons 3 INPUT MODE button 4 5.1CH INPUT button

89 0qaqs qd qf

DIMMER DISPLAY

INPUT MODE

SPEAKERS

A

BOFF

A+B

PHONES

VIDEO 1 VIDEO 2 VIDEO 3 DVD/LD TV/SAT

TAPE MD/DAT CD TUNER PHONO

5.1CH INPUT

5 MASTER VOLUME control 6 MUTING button 7 SPEAKERS button

PHONE jack

MULTI CHANNEL DECODING

CINEMA STUDIO EX.

ABC

SOUND FIELD

A.F.D.

2CH MODE

LEVEL

SUR

EQ

wd

wa

wf ws

PRESET

– +

BASS BOOSTEQUALIZER

MASTER VOLUME

+–

SET UP

NAME

ENTER

010

– +

FM/AM FM MODE

MUTING

VIDEO L AUDIO R

TUNING

EQUALIZER

VIDEO 3 INPUT

SHIFT

MEMORY

2ND AUDIO

BASS

BOOST

qjql

qg

qkw;

qh

8 DIMMER button 9 DISPLAY button q; A. F. D button/indicator

2CH button/indicator MODE button/indicator

qa CINEMA STUDIO EX. A – C buttons qs MULTI CHANNEL DECORDING indicator qd PRESET TUNING +/– buttons

SHIFT button TUNING +/– buttons FM/AM button FM MODE button

4

qf 2ND AUDIO button (STR-DE945) qg BASS BOOST button qh EQUALIZER button qj SET UP button qk NAME button ql ENTER button w; cursor buttons (</>) wa Jog dial ws EQ button wd SUR button wf LEVEL button

– Rear View –

ANTENNA

AM

U

COAXIAL

FM 75Ω

U

L

R

PHONOINCD

FRONT

REAR

CENTER

L

R

SUB

OUT

MD/DAT

CTRL S

IN

VIDEO OUT

MONITOR

IN

WOOFER

S-VIDEO

OUT

5.1CH INPUT

SIGNAL

GND

IN

TAPE

MD/DAT

OUT

CTRL S

STATUS IN

IN

OPTICAL COAX

MD/DAT

IN

DIGITAL

S-VIDEO

IN

VIDEO IN

AUDIO IN

TV/SAT

qfqd qs qa q; 9qgqhqjqkql

1 ANTENNA terminal 2 5.1CH INPUT jack 3 DIGITAL jack

OPTICAL jack COAX jack

4 SPEAKERS terminal

FRONT (A/B) terminal REAR terminal CENTER terminal

5 SUB WOOFER jack 6 IMPEDANCE SELECTOR switch 7 AC POWER cord 8 AC OUTLET 9 CONTROL A1II jack q; 2ND AUDIO OUT jack

TV/SAT

DVD/LD

IN

+

–

S-VIDEO

IN

VIDEO IN

AUDIO IN

DVD/LD

OUT

VIDEO OUT

VIDEO 2

VIDEO IN

AUDIO INAUDIO OUT

S-VIDEO

OUT

VIDEO OUT

AUDIO OUT

VIDEO 1

IN

VIDEO IN

AUDIO IN

CONTROL A1

2ND AUDIO

OUT

CTRL S

qa VIDEO 1 jack qs VIDEO 2 jack qd DVD/LD jack qf TV/SAT jack qg TAPE jack (STR-DE945) qh MD/DAT jack (STR-DE945)

MD/TAPE jack (STR-DE845)

qj CD jack qk PHONO jack ql MONITOR jack

4

BA

RLRL

IMPEDANCE USE 4 – 16Ω 8 – 16Ω

SPEAKERS

+

–

REARFRONT CENTER

RL

5 6231

AUDIO

OUT

+

–

SUB WOOFER

FRONT

4 Ω 8 Ω

IMPEDANCE SELECTOR

AC OUTLET

8

7

(E model)

Setting

If your receiver has a voltage selector on the rear panel, check that the voltage selector on the rear panel of the receiver is set to the local power supply voltage. If not, use a screwdriver to set the selector to the correct position before connecting the AC power cord to a wall outlet.

a voltage selector

VOLTAGE SELECTOR

220V

240V

120V

5

SECTION 2

s

)

DISASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

CASE

3 case

1 two screws

2

1 two screws

2

5.1 IN BOARD, AU SW BOARD, TUNER

5 5.1 IN board,

2 connector

(CNP10)

1 two screw

AU SW board

1 wire (flat type) (15 core)

(CN1)

4 tuner

3 four screws

(BVTP 3X8

6

VIDEO/OSD/JOINT (1) (H)/OSD JOINT (H)/

)

S-VIDEO/DIGITAL BOARD

1 wire (flat type) (21 core)

(CN55)

4 DIGITAL board

8 VIDEO board (DE845)/OSD board (DE945),

JOINT (1) (H) board (DE845)/OSD JOINT (H) board (DE945) S-VIDEO board

3 screw

(BVTP 3X8 )

1 wire (flat type) (15 core

(CN51)

5 bracket (digital)

DE945

6 connector

HEAT SINK

(CNS213)

4 screw

(BVTP 3X8 )

5 heat sink

4 screw

(BVTP 3X8 )

2 three screws

(BVTP 3X8 )

7 seven screws

(BVTP 3X8 )

1 five connectors

(CNP511, 611, 561, 711, 761)

3 two screws

(BVTP 3X6)

2 ten screws

7

VOL BOARD, MAIN BOARD

)

DE945

6 connector

(CNS305)

7 three screws

(BVTP 3X8 )

8 MAIN board

5 four screws

(BVTP 3X8 )

2 knob

3 washer

1 wire (flat type) (23 core

(CNS111)

4 VOL board

8

SECTION 3

TEST MODE

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:

1. While depressing, the [A.F.D] and the [DIMMER] buttons simultaneously, press the po wer `/1 button to turn on the main power.

2. All segments turn on at the same time, then each segment tur ns on press the [A.F.D] button.

Factory Set Mode

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

1. While depressing the [SET UP], and the [DIMMER] buttons simultaneously, press the power `/1 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:

1. While depressing the [SET UP] button simultaneously, press the power `/1 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 button is pressed often the demonstration has started, the power is turned off, and the demonstration resumes if the power ALL CLEAR mode; Press the [A.F.D], [SOUND FIELD MODE

( )

+ ], and `/1 buttons.

`/1 button is pressed again.

Sound Field Clear Mode

The preset sound field is cleared when this mode is activ ated. Use this mode before returning the product to clients upon completion of repair. Procedure:

1. While depressing the [SOUND FIELD MODE + ] button, press the power `/1 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, and E Models)

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

1. Set the FUNCTION to AM. Turn off the main power.

2. While depressing the [TUNING+] button or the [PRESET

TUNING +] button, press the po wer `/1 button to turn on the

main power.

3. Either the message AM 9kHz Step or AM 10kHz Step appears. Select the desired step.

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 written in the RAM (IC1402: IDT71V016S). When the test data is read from the RAM by the DSP , the data output must be equi valent to the original data. If they disagree, an error is triggered. Errors can be caused by the broken data line or defective soldering. Procedure:

1. While pressing the [SOUND FIELD MODE + ] and [DIMMER] buttons, press the `/1 button to enter the DSP test mode.

2. The message DSP TEST MODE appears. When an error occurs, the message DSP2 ERROR is displayed. When there is no error, the message DSP2 NO ERROR appears and the 1 kHz signal is output to all channels.

3. Use the [MUTING] button, when selecting the SINE WAVE, THROUGH, or IMPLUSE mode.

( )

Version Mode

When this mode is used, the microprocessor version number is displayed. Procedure:

1. Press the `/1 button while pressing the [MUTING], and [DIM-

MER] buttons to turn on the power. The microprocessor ver-

sion number appears as follows.

9

MEMO

10

SECTION 4

DIAGRAMS

STR-DE845/DE945

4-1. BLOCK DIAGRAM – MAIN Section (1/2) –

TM301 TUNER UNIT

TM301

(ANTENNA)

05

(DE945)

(DE845)

VIDEO 1

VIDEO 2

TV/SAT

DVD/LD

TV/SAT

S-VIDEO IN

DVD/LD

S-VIDEO IN

VIDEO 1

S-VIDEO IN

TAPE

DVD/LD IN

TV/SAT IN

DAT/MD IN

MD/DAT OUT

MONITOR

VIDEO OUT

VIDEO IN

VIDEO OUT

VIDEO IN

VIDEO OUT

VIDEO IN

J253-1

J253-2

J252-1

75Ω

PHONO IN

(DE945)(DE845)

DAT/MDMD/TAPE

IN

RECOUT

DVD/LD INCOAX

Y

C

Y

C

Y

C

FM

AM

J201

J202

J203

L

LCD IN

L

IC001 IR LINK

DET IC002 IR LINK

DET IC003 IR LINK

DET IC004 IR LINK

DET

J1001

LAUDIOVIDEO 3 INPUT

J301

J299-1

13

15

11

3

5

13

3

5

13

FM

AM

DO

J302

LIN

LRECOUT

J303

IC007

VIDEO SELECT

1

M OUT V1 IN

V1 OUT

9

V2 IN

V2 OUT

3

TV

5

LD

Y SWITCH

IC252

TV

LD

V1 I

C SWITCH

IC251

TV

LD

V1 I

TUNED

STEREO

IC201

V1 0 SW1 SW2 SW3 SW4 SW5

M 0

V1 0 SW5 SW1 SW2 SW3 SW4

M 0

MUTING

STEREO

MUTING

VCC

VEE

SW1

SW2

SW3

SW4

SW5

15 14 10

4 6 2 1

15

2 14 10

4

6

1

L OUT

10

R OUT

DATA

CLOCK

S DATA

S CLK

16

8

14

10

4

6

2

D204

D205

R CH

12

CE

1321315144

5 4 6 3 4

9

SELECT SWITCH IC1005

D201

EQ AMP

IC302

7

10 11 12

A

14

2

B

+5V

–5V

Y

C

J252-2

VIDEO 1

S-VIDEO OUT

Y

C

S LAT

A B

77

76

75

72

D202

J251

MONITOR

S-VIDEO OUT

SELECTOR

IC330

TUNER

26

CD

27 25

MD TAPE

23

AUDIO SELECT

IC301

3

4

2

8 7 6

11 12 10

CONTROL

CE

CLK

DI

14 16

15

S LAT

S CLK

S DATA

A

DO

TUNED

S DATA

TMUTE

STEREO

58 59 60 84 112 110 111 109 11856 57 55 47 48 46 116 113 114 106 85 6

VIDEO (SW1)

VIDEO (SW2)

VIDEO (SW3)

VIDEO (SW4)

DATA

STEREO

AUTO STOP

TUNER MUTE

DATA

S CLK

CLOCK

B

S LAT

108 107

LATCH

DIG IN A

DIG IN B

COM COM COM

15 14 16

S CLK

S DATA

TV/SAT

DVD/LD

VIDEO2

VIDEO1

S CLK

S DATA

EV CLK

EV DATA

26 27 25

S LAT

DIGITAL AUDIO

I/F RECEIVER

IC1101

S LAT

DI

EV STB

CL

IC309

(DE945)

SELECTOR

J305

LINPUT

LOUTPUT

J304

LINPUT

LOUTPUT

LINPUT

3

D IN

36

DI

38

CLK

37

CE

48 17

CE

IC303

27

26

25

27

26

25 17

CONTROL

CE

CLK

DI

14 1615

S LAT

S CLK

S DATA

16

DATA

13

CK OUT

14

BCK

15

LRCK

IC11404

22 8

12.288M

ERROR

XMODE

AUTO

5

34

35

DO

32

XSTAT E

DO

AUTO

XSTAT E

3

7

IC1404

X3501

12.288MHz

Q1204

ERROR

ANALOG/DIG

6

Q1203

D1202

IC1404

DIGITAL AUDIO DECODER

85

84

83

82

2

1

69 68 66 62

D1101

D SIG

S MUTE

SYSTEM

CONTROLLER

IC1201 (1/2)

DOLBY

IC1301

AU

DATA0

AU

DATA1

SDIA1

AU

SDIA0

DATA2

SDBCK0

SDWCK0

XI

SO

SCK

SICSIC

1 2 4 5

SICSIC

SCCLK

IC304

IC1504 IC1504

30

LIN+

29

LIN-

9

SDTO

39

MCLK1 BCLK

4 5

X1401 10MHz

HRDY

Q1201

SOD

LRCK

2

SDTI 1

SDTI 2

3

4

SDTI 3

3 43 42 41 17 11

Q1202

AUDIO DSP

HA0

113 114 115 116

117

118

119

53

ı

69

76

ı

94 74 70

25

ı

31 39

ı

45

15

IC1202

10118

IC1401

BCK0 BCK1 LRCK0 LRCK1

SIA

SIB

SIC

ED16 – 31

CLKO

EA0 – 15

XWE XOE

HRDY

HA0

XHDWR

9 14 26

9

XHDWR

SOA

SOB

SOC

CLKI

SOD

XHDCS

XRST

XHDCS

X1201 16MHz

2

3

4

99

100

5

13

IC1202

XOXI 9293

IC1403

14

13

IC1403

12

11

IC1403

67

24

IC1403

4

23

5

3

2

22

IC1403

SRAM

IC1402

D0 – 7

83

D0 – 7

3 25 13 16 26 27 15 31 30 29 28 32 35

24 – 17 HD0 – HD7

SO

AUDIO CODEC

IC1503

L OUT1

L OUT3

R OUT3

L OUT2

S MUTE

CDTI

CCLKCSPD

CS

CDTI

CCLK

S MUTE

DFS

PD

96kHZ

5.1CH INPUT

IC1507

5

27

5

23

3

24

25

5

Q1507

MUTE DRIVE

AC MUTE

PROTECT

RY HP RY FRONT A RY FRONT B

RY CENTER

RY WOOFER

RY REAR

DISP DATA

DISP CLK

DISP MR

RESET

RY POWER

7

1

IC1505

IC1506

SREQ

STOP

SOTO

SINO

MD2 MD0

FRONT L

REAR L

CENTER

SUB WOOFER

7

IC1505

7

82 66

104

99

100

101 103 102

50 52 49

51 90

105

69

10

9 87 89

J307

(DE945)

Q301

RELAY DRIVE

19 18

20

23

26

21

27

24

3

2

RY301

SELECTOR

IC1502

2CH L CDL

S.1-L

S.1-LS

S.1-C

L

C

W

LS

15 14 16

S CLK

S DATA

L OUT

C OUT

W OUT

LS OUT

S LAT

R CH

17

25

4

22

D1201

J306

IC1510

MUTE Q1502

IC1508

MUTE

Q1505

IC1508

MUTE Q1506

IC1509

MUTE Q1503

• SIGNAL PATH

: FM

: PHONO

: CD

: DVD

AC MUTE PROTECTOR

HP RY 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

2ND

L

AUDIO

R

OUT

L

C

W

B

SL

(Page 13)

DATA CLK LAT

C

(Page 13)

D

(Page 13)

1111

STR-DE845/DE945

4-2. BLOCK DIAGRAM – MAIN Section (2/2) –

(DE945)

VIDEO SELECT

IC2005

7

V3

3

TV

5

LD

11

V2 OUT

9

V2 IN

15

V1 OUT

13

V1 IN3

VIDEO 3

INPUT

TV/SAT

DVD/LD

VIDEO 2

VIDEO 1

J299-2

VIDEO

J2003

VIDEO IN

VIDEO OUT

J2002

VIDEO IN

VIDEO OUT

VIDEO IN

16

VCC

8

VEE

14

SW1

10

SW2

4 75

SW3

6

SW4

2

SW5

1

M OUT

+5V

–5V

D2003 D2004

VIDEO (SW1)

77

76

VIDEO (SW2)

VIDEO (SW3)

VIDEO (SW4)

72

SYSTEM CONTROLLER

IC1201 (2/2)

J253-1

TV/SAT

S-VIDEO IN

J253-2

DVD/LD

S-VIDEO IN

J252-1

VIDEO 1

S-VIDEO IN

Y SWITCH

IC252

3

TV

Y

5

LD

C

13

3

5

13

V1 IN

C SWITCH

TV

LD

V1 IN

VIDEO BUFFER

IC251

IC2002

Y

C

Y

C

V1 OUT

SW1 SW2 SW3 SW4

M OUT

V1 OUT

SW1 SW2 SW3 SW4

M OUT

15

14 10

4 6

1

15

14 10

4 6

1

OSD DRIVER

IC2004

Y

C

Y

C

J252-2

VIDEO 1

S-VIDEO OUT

J251

MONITOR

S-VIDEO OUT

6

C OUT

8

J2001

MONITOR

05

VIDEO OUT

Y OUT

7

V OUT

X2002 14MHz

C IN

Y IN

V IN

10 9 811

CLOCK

IC2001

4

2

3

26

C OUT

27

Y OUT

25

V OUT

8

EXS

CNP253

(FOR CHECK)

HSYNC

10

VSYNC

11 21

EXHSYN

TEST

VBLK SCLK

SIN

YIN VIN

CIN

6 22 23 24

CS

1

3

2

12

Q2001, 2002

D2002

D2005

2

HSYNC

IC2006

SYNC

IC2008

SYNC

VSYNC

IN

1

4

IN

1

4

56 26 28

100

55

OSD VBLK OSD CLK OSD DOUT OSD LAT

OSD VSYNC

MODE

CONTROL

IC102

1212

4-3. BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –

STR-DE845/DE945

B

(Page 11)

05

L

C

W

SL

DATA

CLK

LAT

(Page 11)

(US, Canadian)

J257

TV/SAT CTRL S

STATUS IN

J258

MONITOR

CTRL S

IN

J255

VIDEO 1

CTRL S

OUT

J256

DVD/LD CTRL S

OUT

VOLUME

RV401

MM

D

C

IC408

31

IC409

(1/2)

31

IC409

(2/2)

57

IC410

31

AC MUTE

PROTECTOR

HP RY SP/A RY SP/B RY

RY CENTER RY WOOFER REAR SY RY

RY POWER

STOP

RESET

URESET

USREQ

UMREQ

UCLOCK

UDATA

SOTO

SIN1

MD2 MD0

IC105

2

MOTOR

DRIVE

4

DATA

CLK

LAT

DATA

CLK

LAT

DATA

CLK

LAT

VOL CONT

IN

3 9

DATA

8

CLK

10

LAT

VOL CONT

IN

3

IN

14

9

DATA

8

CLK

10

LAT

VOL CONT

3

IN

9

DATA

8

CLK

10

LAT

5

8

BUFFER

Q201, 202

13

IN1

11

1

10

2

CONTROL S

IC414

OUT

IC415

OUT

IC416

OUT

MUTE DRIVE

Q501, 503

9

UP

10

DOWN

IN3

OUT1

I/O

IC253

15

1

6

4

2

7

2

MBUS TV

95 96 93 94 18

POWER AMP (L)

IC501

+B

13

VCC

12

+VE

14

VCC

15

VEE

–B

8

1

POWER AMP (C/W)

13

+B

14 15

–B

6

1

POWER AMP (SL)

+B

13 14 15

–B

8

1

49

51 20 19 61 62 60 59 88 87 89 90 82 83 98 99

MD0

MD2

SINO

SOTO

MBUS DVD

SIRCS IN

MBUS VIDEO 1

MBUS STA OUT

38 39 40 41 43 44 7 64 65 66 21 24 25 22

FUNCTION

KEY

S111 – 118

9

NF

IN

MUT

11

–VE

IC601

VCC

2

+VE

VCC VEE

IN

5

NF

MUT

3

–VE

IC701

VCC

12

+VE

VCC VEE

9

NF

IN

MUT

11

–VE

UDATA

UMREQ

UCLOCK

AD KEY1

AD KEY2

FUNCTION

KEY

S121 – 125

IC101

REMOTE

1 3

CONTROL RECEIVER

Q604, Q605

Q704, Q705

USREQ

URESET

Q505 BIAS

BIAS

AD KEY3

FUNCTION

KEY

S131 – 137

BOOSTER

Q506

BOOSTER

Q507

BOOSTER

Q606

BOOSTER

Q607

BOOSTER

Q706

BOOSTER

Q707

RV101

JOG UP

JOG DOWN

FUNCTION

KEY

S141 – 148

B+ (5V)

D119, 122, 123,

DCS

AD KEY4

FUNCTION

S151 – 157

CUR DET

Q508

CUR DET

Q608

CUR DET

Q708, Q798

125, 151, 152

EQ

B.B

MUTE

MODE CONTROL

IC102

AD KEY5

FUNCTION

KEY

S161 – 165

PROTECTOR

Q547-549

D.D

JOG

AD KEY6

KEY

AF DETECTOR

Q509,510

AF DETECTOR

Q609,610

AF DETECTOR

Q709,710

D104 – 106,

157, 158,

160 – 172

1 – 7 9 – 15 20 – 29

LED DRIVER

IC106

LED CLK

LED DATA

AD KEY7

D101

MUTING

LED CE

LED CLR

SP A

SPEAKERS

S101

Q511

Q611

SP B

(DE945)

+B

S150

I/1

(POWER)

QQ13,14

LED

DRIVE

POWER KEY

F2

FLOURESCENT

INDICATOR TUBE

SIRCS DET

X101

16MHz

XO

FL CLK

FL LAT

30 31 32 28

LAT

CLK

IC103

FL DRIVE

FL101

RELAY DRIVE

Q601

RELAY

DRIVE

Q546

RELAY

DRIVE

Q596

IC11

XI

FL CLEAR

FL DATA

DIN

CLR

F1

RY602

RY501

RY502

RELAY DRIVE

Q645

RELAY DRIVE

Q681

RELAY DRIVE

Q745

SIRCS

IC12

2

CARR OUT SIRCS IN

33

RY601

RY681

RY701

15 16

XI

LAT

5 14

LAT

67

X11

7.82MHz

XO

CA1 I

CA1 O

RESET

ABUS OUT

Q109

I/O

BUFFER

11 12

1358 75 76 1 2 3 4 5 8

POWER RY

63

R CH

QQ11

CTL

I/O

RESET

STOP

ABUS A1 IN

D180

J701

PHONES

TM501

L

A

R

L

R

TM701

C

S (L)

S (R)

77

47

FRONT

B

CENTER

REAR

JJ103

SUB WOOFER

D1209

SPEAKERS

+5V

+15V

–5V

–15V

+32V

+B

–B

CONT µCOM ETC

DISP µCOM+5.6V

RESET

Q108

SWITCH

Q613

TUNER +5V

IR LINK +5V

DIGITAL +5V

D1211

IC404

+5V

31

REG

IC405

–5V

23

REG

Q801

+32V

REG

IC1203

IC1204

D1208

+6.2 REG

Q1205

3

RESET

8 5

IC1206

6

+24V

IC401

+15V

REG

–15V

REG

IC402

D801

IC1207

+15V

REG

IC1208

+5V REG

+3.3V

REG

+5V REG

+6.2V

REG

IC1205

D901-904

13

23

13

D812 D811

F801

F802

D802-805

D806-809

RY901

RELAY

DRIVE

Q901

T902

J204: DE845 J2004: DE945

CONTROL A1 II

S801

IMPEDANCE

SELECTOR

84

F803

F804

F805

F2

F1

JW927

JW928

EXCEPT E

T901

• SIGNAL PATH

F901

(US, Canadian, E, PX)

: FM

: CD

(E, PX)

F904

EXCEPT US,

Canadian, E, PX

F903

JW925

VS901

VOLTAGE

SELECTOR

240V

220V

120V

CNJ901

CNP901

AC IN

1313

4-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

• Circuit Boards Location

Note on Schematic Diagram:

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

f

•

• 2 : nonflammable resistor.

• C : panel designation.

• U : B+ Line.

• V : B– Line.

• Voltages and waveforms are dc with respect to ground

• Voltages are tak en with a V OM (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 I : PHONO

AUS : Australian model CH : Chinese model CND : Canadian model MY : Malaysia model SP : Singapore model

: Impossible to measure

∗

Note:

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

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

a

•

• b : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution: Pattern face side: Parts on the pattern face side seen from (Conductor Side) the pattern face are indicated. Parts face side: Parts on the parts face side seen from

(Component Side) the parts face are indicated.

: Through hole.

• Indication of transistor

C Q

B

E

Q

B

These are omitted.

CE

These are omitted.

Q

CE

These are omitted.

POWER board

DC (1) board

DISPLAY board

BIAS (R) board

SP board DC (2) board

ROTARY board

BIAS (C) board

VIDEO 3 board (DE945)

V. SWITCH board (E/PX)

AC board

DIGITAL board

5.1 IN board

AU SW board

MUTING board

BIAS (L) board

1414

BIAS (RS) board

BIAS (LS) board

H.P board

VOL board

S-VIDEO board

VIDEO board (DE845)/ OSD board (DE945)

JOINT (1) (H) board (DE845)/ OSD JOINT (H) board (DE945)

MAIN board

4-5. SCHEMATIC DIAGRAM – DIGITAL Board (1/3) –• See page 42 for Waveform. • See page 42 for IC Block Diagram.

(Page 16)

STR-DE845/DE945

(Page 17)

PIN FUNCTION

(Page 27)

(Page 29)

(Page 39)

(Page 32)

1515

STR-DE845/DE945

4-6. SCHEMATIC DIAGRAM – DIGITAL Board (2/3) –• See page 42 for Waveform. • See page 42 for IC Block Diagrams.

PIN FUNCTION

(Page 17)

(Page 15)

1616

4-7. SCHEMATIC DIAGRAM – DIGITAL Board (3/3) –• See page 42 for Waveform. • See page 42 for IC Block Diagrams.

STR-DE845/DE945

(Page

16)

PIN FUNCTION

(Page 25)

(Page 15)

The components identified by mark 0 or dotted line with mark 0 are critical for safety.

1717

Replace only with part number specified.

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

STR-DE845/DE945

4-8. PRINTED WIRING BOARD – DIGITAL Board (Component Side) –• See page 14 for Circuit Boards Location.

• Semiconductor Location

Ref. No. Location

D1001 I-2 D1101 F-3 D1201 B-3 D1202 D-2 D1203 D-5 D1204 G-12 D1205 G-12 D1208 F-15 D1209 F-2 D1210 D-4 D1211 G-16 D1212 B-1

IC1005 I-2 IC1007 I-1 IC1101 H-3

Ref. No. Location

IC1201 D-4 IC1202 F-5 IC1301 H-5 IC1401 G-8 IC1402 I-8 IC1403 J-7 IC1404 I-4 IC1503 I-11 IC1504 H-12 IC1554 G-11

Q1201 E-6 Q1202 E-6 Q1203 E-2 Q1204 E-2

1818

4-9. PRINTED WIRING BOARD – DIGITAL Board (Conductor Side) –• See page 14 for Circuit Boards Location.

(Page 28)

(Page 26)

STR-DE845/DE945

(Page 28)

(Page 30)

(Page 24)

(Page 38)

• Semiconductor Location

Ref. No. Location

D1206 F-14 D1207 F-13 D1502 I-11 D1503 I-11

IC1001 F-1 IC1002 E-1 IC1003 D-1 IC1004 C-1 IC1203 J-14

Ref. No. Location

IC1204 J-17 IC1205 F-14 IC1206 H-16 IC1207 H-14 IC1208 G-13 IC1501 J-15 IC1511 B-6

Q1205 G-17

1919

STR-DE845/DE945

4-10. PRINTED WIRING BOARDS – VIDEO/JOINT (1) (H) Boards (DE845) –• See page 14 for Circuit Boards Location.

(Page 26)

TO

VIDEO

BOARD

TO

JOINT (1) (H)

BOARD

2020

4-11. SCHEMATIC DIAGRAM – VIDEO/JOINT (1) (H) Boards (DE845) –• See page 42 for IC Block Diagram.

STR-DE845/DE945

(Page 27)

2121

STR-DE845/DE945

4-12. PRINTED WIRING BOARDS – OSD/OSD JOINT (H) Boards (DE945) – • See page 14 for Circuit Boards Location.

(Page 26)

TO

OSD

BOARD

TO

OSD JOINT (H)

BOARD

• Semiconductor Location

Ref. No. Location

D2001 C-5 D2002 B-5 D2003 B-1 D2004 B-1 D2005 B-5

IC2001 C-1 IC2002 C-3

Ref. No. Location

IC2004 C-5 IC2005 B-2 IC2006 B-5 IC2007 IC2008 B-4

Q2001 B-6 Q2002 C-5

(Page 28)

2222

4-13. SCHEMATIC DIAGRAM – OSD/OSD JOINT (H) Boards (DE945) – • See page 42 for waveforms. • See page 42 IC Block Diagrams.

STR-DE845/DE945

(Page 29)

(Page 27)

2323

STR-DE845/DE945

4-14. PRINTED WIRING BOARD – AU SW Board – • See page 14 for Circuit Boards Location.

• Semiconductor

Location

Ref. No. Location

D1501 H-2 D1504 H-3 D1505 H-4

IC1502 E-2 IC1505 B-4 IC1506 C-4 IC1507 D-4 IC1508 G-4 IC1509 G-3 IC1510 G-1

Q1501 H-2 Q1502 H-1 Q1503 H-3 Q1504 H-2 Q1505 H-4 Q1506 H-3 Q1507 I-5

(Page 36)

(Page 19)

(Page 30)

2424