Sony STR-DB870, STR-DB1070 Service manual

STR-DB870/DB1070

SERVICE MANUAL

Ver 1.1 2001.07

Photo: STR-DB870

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

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

**“DTS” and “DTS Digital Surround” are registered trademarks

of Digital Theater Systems, Inc.

US Model

E Model

Chinese Model

STR-DB1070

Canadian Model

AEP Model

UK Model

STR-DB870/DB1070

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 (Models of area code U 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 %) (4 ohms 20 Hz – 20 kHz, THD 0.09 %)

Reference Power Output

(8 ohms 20 Hz – 20 kHz, THD 0.09 %) STR-DB1070: FRONT

STR-DB870: FRONT

(4 ohms 20 Hz – 20 kHz, THD 0.09 %) STR-DB1070: FRONT:

STR-DB870: FRONT

100 W + 100 W 90 W + 90 W

1)

:100 W + 100 W

1)

CENTER

: 100 W

1)

: 100 W + 100 W

SURR SURR BACK

1)

: 100 W + 100 W

1)

: 100 W

CENTER

1)

SURR

: 100 W + 100 W

1)

90 W + 90 W

1)

CENTER

: 90 W

1)

: 90 W + 90 W

SURR SURR BACK

1)

:90 W + 90 W

1)

CENTER

: 90 W

1)

SURR

: 90 W + 90 W

1)

: 100 W

1)

: 90 W

SPECIFICATIONS

Models of other area code Rated Power Output at Stereo Mode

(8 ohms 1 kHz, THD 0.7 %) STR-DB1070: 100 W + 100 W

STR-DB870: 100 W + 100 W (4 ohms 1 kHz, THD 0.7 %) STR-DB1070: 90 W + 90 W

STR-DB870: 100 W + 100 W

Reference Power Output

(8 ohms 1 kHz, THD 0.7 %) STR-DB1070: FRONT

STR-DB870: FRONT

(4 ohms 1 kHz, THD 0.7 %) STR-DB1070: FRONT

STR-DB870: FRONT

(8 ohms 20 Hz – 20 kHz, THD 0.09 %) STR-DB1070: FRONT

STR-DB870: FRONT

90 W + 90 W

80 W + 80 W

2)

1)

: 100 W + 100 W

1)

CENTER

: 100 W

1)

SURR

: 100 W + 100 W

SURR BACK

1)

: 100 W + 100 W

1)

CENTER

: 100 W

1)

SURR

: 100 W + 100 W

1)

: 90 W + 90 W

1)

CENTER

: 90 W

1)

: 90 W + 90 W

SURR SURR BACK

1)

: 100 W + 100 W

1)

: 100 W

CENTER

1)

: 100 W + 100 W

SURR

1)

: 90 W + 90 W

1)

CENTER

: 90 W

1)

SURR

: 90 W + 90 W

SURR BACK

1)

: 90 W + 90 W

1)

CENTER

: 90 W

1)

: 90 W + 90 W

SURR

2)

3)

2)

3)

2)

1)

: 100 W

1)

: 90 W

1)

: 90 W

(4 ohms 20 Hz – 20 kHz, THD 0.09 %) STR-DB1070: FRONT

STR-DB870: FRONT

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

E 240 V AC, 50 Hz CN, SP, CEL, KR 230 V AC, 50 Hz TW 110 V AC, 60 Hz

3) Measured under the following conditions:

Area code Power requirements

CN 220 V AC, 50 Hz

Frequency response

PHONO

CD/SACD, TAPE, MD/DAT, MD/TAPE, TV/SAT, DVD/LD, VIDEO 1, 2, 3

1)

: 80 W + 80 W

1)

: 80 W

CENTER

1)

SURR

: 80 W + 80 W

SURR BACK CENTER

SURR

RIAA equalization curve ±0.5 dB

10 Hz – 100 kHz ±3 dB (with sound field, equalizer, and bass boost bypassed)

1)

: 80 W

1)

: 90 W + 90 W

1)

: 90 W

1)

: 90 W + 90 W

– Continued on next page –

9-873-842-12 Sony Corporation

2001G0500-1 Home Audio Company C 2001.7 Shinagawa Tec Service Manual Production Group

FM STEREO/FM-AM RECEIVER

STR-DB870/DB1070

Inputs (Analog)

PHONO

MULTI CH IN (1, 2), CD/SACD, TAPE, MD/DAT, MD/TAPE, DVD/LD, TV/SAT, VIDEO 1, 2, 3

4) INPUT SHORT.

5) Weighted network, input level.

Inputs (Digital)

DVD/LD (Coaxial)

DVD/LD, TV/SAT, MD/DAT, MD/TAPE (Optical)

Outputs

TAPE, MD/DAT, MD/ TAPE (REC OUT), VIDEO 1, 2 (AUDIO OUT)

FRONT L/R, CENTER, SURROUND L/R, SURROUND BACK, SUB WOOFER

EQ

BASS: 99 Hz~1.0 kHz MID: 198 Hz~10 kHz TREBLE: 1.0 kHz~10 kHz Gain levels: ±10 dB, 1 dB step

Sensitivity: 2.5 mV Impedance: 50 kilohms

4)

: 86 dB (A, 2.5 mV5))

S/N Sensitivity: 150 mV

Impedance: 50 kilohms S/N4): 96 dB (A, 150 mV

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

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

Voltage: 150 mV Impedance: 1 kilohms

Voltage: 2 V Impedance: 1 kilohms

(21 steps) (37 steps) (23 steps)

5)

)

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:

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%

38.3 dBf, 22.5 µV/75 ohms

Separation 45 dB at 1 kHz Frequency response 30 Hz – 15 kHz,

Selectivity 60 dB at 400 kHz

+0.5/–2 dB

AM tuner section

Tuning range Models of area code U, CA

With 10-kHz tuning scale: 530 – 1.710 kHz With 9-kHz tuning scale: 531 – 1.710 kHz

Models of area code E

With 10-kHz tuning scale: 530 – 1.610 kHz With 9-kHz tuning scale: 531 – 1.602 kHz

Models of area code CN, SP, CEL, TW, KR

With 9-kHz tuning scale: 531 – 1.602 kHz

Antenna Loop antenna Usable sensitivity 50 dB/m (at 1,000 kHz or

S/N 54 dB (at 50 mV/m) Harmonic distortion 0.5 % (50 mV/m,

Selectivity

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

6) You can change the AM tuning scale to 9 kHz or 10 kHz. After tuning in any AM station, turn off the receiver. Hold down TUNING – and press ?/1. 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.

999 kHz)

400 kHz)

6)

Video section

Inputs

Video: 1 Vp-p, 75 ohms S-video: Y: 1 Vp-p, 75 ohms

Outputs

Video: 1 Vp-p, 75 ohms S-video: Y: 1 Vp-p, 75 ohms

C: 0.286 Vp-p, 75 ohms

General

Power requirements

Area code Power requirements

U, CA 120 V AC, 60 Hz CEL 230 V AC, 50/60 Hz CN, SP 220 – 230 V AC, 50/60 Hz E 120/220/240 V AC, 50/60 Hz TW 110 V AC, 60 Hz KR 220 V – 230 V AC, 60 Hz

Power consumption

Area code Power consumption

U STR-DB1070: 300 W CA STR-DB1070: 420 VA

CEL STR-DB1070: 240 W

CN, SP, E, TW, KR STR-DB1070: 240 W

AC outlets

Area code AC outlets

U, CA 2 switched, 120 W/1A MAX SP, CEL, KR 1 switched, 100 W MAX CN, E, TW 2 switched, 100 W MAX

Dimensions 430 × 161 × 401 mm

Mass (Approx.) 16.0 kg

Supplied accessories

FM wire antenna (1) AM loop antenna (1)

• Models of area code U, CA Audio/video/control S connecting cord (1) Control S connecting cord (1)

• STR-DB1070 only

• Models of area code U, CA

Remote commander RM-PP505L (1) R6 (size-AA) batteries (2)

• Models of other area codes

Remote commander RM-LP205 (1) R6 (size-AA) batteries (3)

• STR-DB870 only

• Models of area code CA

Remote commander RM-PP505 (1) R6 (size-AA) batteries (2)

• Models of area code CEL

Remote commander RM-U305 (1) R6 (size-AA) batteries (2)

Design and specifications are subject to change without notice.

STR-DB870: 390 VA

STR-DB870: 230 W

including projecting parts and controls

• Abbreviation CA : Canadian model CEL : AEP and UK models CN : Chinese model

SP : Malaysia and Singapore models TW : Taiwan model U : US model

KR : Korean model

2

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

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 A C milliammeter. The Data Precision 245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a V OM 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 e xamples 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)

STR-DB870/DB1070

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)

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 MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

3

STR-DB870/DB1070

Ver 1.1 2001.07

SERVICING NOTES

)

• MODEL IDENTIFICATION

– Rear Panel –

PART No.

Model PART No.

DB1070 : US model 4-233-610-0 DB1070 : Canadian model 4-233-610-1 DB1070 : Malaysia and

Singapore models DB1070 : Chinese model 4-233-610-3 DB1070 : AEP and UK models 4-233-610-5 DB1070 : 120 V AC area and

240 V AC area in E models DB1070 : Taiwan model 4-233-610-8 DB1070 : Korean model 4-233-610-9 DB870 : Canadian model 4-233-630-1 DB870 : AEP and UK models 4-233-630-2

4-233-610-2

4-233-610-7

STR-DB870/DB1070

SECTION 1

[]

SERVICE POSITION

In checking the DIGITAL board, prepare jig (extension cable J-2501-208-A: 200 mm 21 core).

Connect jig (extension cable J-2501-208-A to the MAIN board (CN806, 807) and DIGITAL board (CN1102, 1103).

DIGITAL board

MAIN board

5

STR-DB870/DB1070

LOCATION OF CONTROLS

– Front Panel –

SECTION 2

GENERAL

This section is extracted from instruction manual.

123 qj

•

4 qd567 0 qa qs qf qg qh qk ql w;8 9

rfrg

2CH qg (30) 2ND ROOM (STR-DB1070 only)

eg (27)

6.1CH DECODING 0 (31)

6.1CH DECODING indicator 7 (31)

A.F.D. qf (30) AUDIO SPLIT wa (25) CINEMA STUDIO EX qa (28) Cursor buttons (

33, 35, 36, 43, 45)

DIGITAL CONCERT HALL qs

(29)

DIMMER 4 (27) DIMMER indicator rs (27) Digital Cinema Sound indicator

5 (28)

Display qj (32) DISPLAY 3 (27, 41) DOOR OPEN wg

/ ) wj (19,

eg

ekrard rs

r;

ej

el

eh

ENTER wh (43) EQ e; (36) EQUALIZER ef (36) FM/AM 6 (38, 39) FM MODE r; (39) FUNCTION wd (24, 25, 38, 39,

40, 43) INPUT MODE wf (26) IR receptor 2 Jog dial wk (19, 33, 35, 36, 43,

45) LEVEL wl (35) MASTER VOLUME w; (24, 26) MEMORY el (38, 40) MODE +/– qh (28, 37) MULTI/2CH A. DIRECT qk (26,

30) MULTI CHANNEL DECODING

indicator qd

MUTING ws (26)

eaed

wlef

wa

wf wdwhe;es wjwk

wg

NAME ed (43) NIGHT MODE ql (31) ON SCREEN (STR-DB1070

only) rd (10) PHONES jack rg (26) PRESET TUNING +/– 9 (40) PTY SELECT +/– (AEP and UK

models) eh (41) RDS/PTY (AEP and UK models)

ek (41) SET UP es (19, 45) SHIFT 8 (40) SLEEP (Except AEP and UK

models) ek (44) SPEAKERS switch rf (26) STREAM INFO (STR-DB870

only) eg (27) SURR ea (33) TEST TONE ej (24) TUNING +/– eh (39) VIDEO 3 INPUT jacks ra ?/1 (power) 1 (18, 23, 24, 37,

38)

ws

6

– Rear Panel –

1

2 43 9 qa qs5 8 06 7

qd qf qgqh ql w;qj qk

STR-DB870/DB1070

1 DIGITAL jack 2 ANTENNA terminal 3 CONTROL A1 II jack 4 MONITOR jack 5 TV/SAT jack 6 DVD/LD jack 7 VIDEO 2 jack 8 VIDEO 1 jack 9 COMPONENT VIDEO jack (US and Canadian models) 0 SPEAKER terminal

Setting the voltage selector (120 V AC area and 240 V AC area in E models)

If your receiver has a voltage selector on the rear panel, check that the voltage selector 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.

VOLTAGE SELECTOR

220V

240V

120V

qa PRE OUT jack qs IMPEDANCE SELECTOR switch qd MULTI CH IN jack (STR-DB870)

MULTI CH IN 2 jack (STR-DB1070)

qf MULTI CH IN 1 jack (STR-DB1070) qg PHONO jack qh CD/SACD jack qj MD/TAPE jack (STR-DB870)

MD/DAT jack (STR-DB1070)

qk TAPE jack (STR-DB1070) ql 2ND ROOM jack (STR-DB1070) w; AC OUTLET

7

STR-DB870/DB1070

• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

SET

3-2. CASE

(Page 9)

3-3. S-VIDEO BOARD,

VIDEO BOARD, TUNER (Page 9)

3-4. VIDEO AU BOARD

(Page 10)

SECTION 3

DISASSEMBLY

3-5. DIGITAL BOARD

(Page 10)

3-6. MAIN BOARD

(Page 11)

8

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

s

)

3-2. CASE

3

case assy

1

two screws (flat head)

1

two screws (flat head)

2

STR-DB870/DB1070

1

two screws (flat head)

1

two screw (flat head)

3-3. S-VIDEO BOARD, VIDEO BOARD, TUNER

2

4

S-VIDEO board, VIDEO board

1

connector (CN753)

wire (flat type) (11 core) (DB870: AEP, UK models) wire (flat type) (15 core) (DB1070: EXCEPT US, Canadian models wire (flat type) (21 core) (US, Canadian models) (CN303)

3

eight screws (BV/RING)

6

three screws (BV/RING)

5

wire (flat type) (15 core) (CN1)

7

tuner

9

STR-DB870/DB1070

)

3-4. VIDEO AU BOARD

1

wire (flat type) (9 core) (CN201)

3

VIDEO AU board

2

two screws (BV/RING

3-5. DIGITAL BOARD

2

connector (CN1108)

1

wire (flat type) (31 core) (CN1101)

2

connector (CN1107)

2

connector (CN1106)

3

two screws (BVTP3 × 8)

6

DIGITAL board

5

two connectors (CN1102, 1103)

4

five screws (BV/RING)

10

3-6. MAIN BOARD

4

screw (BVTP3 × 8)

3

two screws (BVTP3

1

connector (CN805)

×

8)

3

two screws (BVTP3

1

connector (CN804)

×

8)

1

connector (CN802)

1

connector (CN803)

5

4

screw (BVTP3 × 8)

STR-DB870/DB1070

2

five screws (BV/RING)

6

connector (CN810)

8

6

five connector (CN501, 551, 451, 401, 601, 651)

heat sink

7

ten screws (transistor)

9

MAIN board

11

STR-DB870/DB1070

SECTION 4

TEST MODE

Factory Set Mode

All preset contents are reset to the default setting. Procedure: While pressing the [SET UP] and [DIMMER] buttons, press the I/1 button to turn on the main power . The message “TUNER F A C- TOR Y PRESET” 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 pressing the [A.F.D.] and [MODE +] buttons, press the I/1 button to turn on the main power. The message “Memory Cleared” appears and the memories are reset to the default values.

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:

While pressing the [MODE +] b utton, press the I/1 button to turn on the main power. The message “S.F Initialize” appears and initialization is performed.

Fluorescent Indicator Tube Test Mode

All fluorescent segments are tested. When this test is acti vated, all segments turn on at the same time, then each segment turns on one after another.

Procedure:

1. While pressing, the [A.F.D.] and [DIMMER] buttons, press

I/1 button to turn on the main power.

the

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

3. To release from this mode, press the I/1 button or disconnect the power cord.

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. Press the I/1 button to turn off the main power.

2. While depressing the [PRESET TUNING +] b utton, press the

I/1 button to turn on the main power.

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

Version Mode

When this mode is used, the microprocessor version number is displayed. Procedure: Press three buttons of [SHIFT], [MODE +] and [TUNING --] si- multaneously. The microprocessor version number appears.

Demonstration Mode

Procedure:

While pressing the [SET UP] button simultaneously, press the I/1 button to turn on the main power. The set enters the DEMO mode. Wait a while, then the demonstration starts. If the I/1 button is pressed often the demonstration has started, the power is turned off, and the demonstration resumes if the I/1 button is pressed again.

12

SECTION 5

DIAGRAMS

5-1. BLOCK DIAGRAM – TUNER/VIDEO INPUT Section –

FM/AM

TUNER UNIT

10L CH

FM 75Ω

COAXIAL

AM

(Page 17)

FM

AM

MUTING

DATA3CLOCK

1CE13

2

S LAT

MUTING

DATA

DATA, CLK

B

CLK

STEREO

14

15

TUNED

STEREO

TUNED4DO

DO

12R CH

6FM IF OUT

9FM DET OUT

R-CH

RDS DECODER

4MUX

XI XO

13 14

4.332MHz

IC1303

X1301

16RLCK

(AEP, UK)

2RDAT

SLAT MUTING STEREO TUNED DO

139

28 RDS DATA 61

40 TUNER LAT 20 TUNER MUTE 25 TUNER STEREO 19 TUNER AUTO STOP 23 TUNER DATA IN

RDS SIGNAL

RDS CLK

SYSTEM

CONTROLLER

IC1703

(1/7)

J750 (1/2)

S-VIDEO IN

J750 (2/2)

S-VIDEO IN

J752 (1/2)

S-VIDEO IN

MONITOR

S-VIDEO OUT

MONITOR

OUT VIDEO

(DB1070)

TV/SAT IN VIDEO

DVD/LD IN VIDEO

VIDEO 2

VIDEO 1

J299

VIDEO 3

INPUT

S-VIDEO

TV/SAT

DVD/LD

VIDEO 1

J751

J302

VIDEO 3

INPUT VIDEO

OUT VIDEO

IN VIDEO

OUT VIDEO

IN VIDEO

Y

C

Y

C

Y

C

Y

C

Y

C

J298 (1/2)

J305

J304

V3

7

TV

3

LD

5

V2. OUT

11

V2. IN

9

V1. OUT

15

V1. IN

13

V3

7

V2. IN

9

TV

3

LD

5

13

V1. IN

V3

7

V2. IN

9

TV

3

LD

5

13

V1. IN

YOUT

8

COUT

6

VOUT

7

(FOR CHECK)

VIDEO SELECT

VIDEO BUFFER

IC305

BUFFER

C325, 326,

CN306

IC308

Y SWITCH

IC752

C SWITCH

IC750

YIN

CIN

VIN

L301,

CT303

2

4

3

OSC

SW4

SW3

SW2

SW1

M. OUT

SW5

OUT

SW2 SW3

SW1 SW4

OUT

SW5

OUT

SW2 SW3

SW1 SW4

OUT

SW5

6

4

10

14

1

2

V1.

15

10

4

14

6

M.

1

2

V1.

15

10

4

14

6

M.

1

2

YOUT

27

COUT

26

VOUT

25

16 XD 15 EXD

10 HSYNC 11 VSYNC 12 TEST

D303

D304

D751

D750

OSD DRIVER

IC307

ANALOG SWITCH

SERIAL

INPUT

CONTROL

SW3

YIN

CIN

VIN

SCLK

SIN

SW4

CS

STR-DB870/DB1070

Ver 1.1 2001.07

• SIGNAL PATH

: TUNER

: VIDEO IN

TU L OUT

SW3, SW4

LEVEL SHIFT IC312

(EXCEPT DB870/DB1070:US, Canadian)

SYNC SEPARATE

IC311

Y

J752 (2/2)

VIDEO 1

S-VIDEO OUT

C

SYNC SEPARATE

IC309

COMPARATOR

IC306

3

10

L. P. F.

8

9

6

FL303

(US, Canadian)

1

2

3

22 23 24

8EXS

BUFFER

Q304,

Q305

LEVEL SHIFT

IC310 (1/2)

(Page 14)

A

(Page 17)

C

32 VIDEO SW4

31 VIDEO SW3

30 VIDEO SW2

29 VIDEO SW1

33 VSYNC

SYSTEM

CONTROLLER

IC1703

(2/7)

CLK

105

106

DATA

LAT

107

P/N

34

LEVEL SHIFT

IC310 (2/2)

2

FL301

L. P. F.

1

5

IC304 (2/3)

6

4

5

FL302

L. P. F.

CLOCK

IC304 (1/3)

1

21213

CLOCK

(EXCEPT US, Canadian)

89 1110

X301

17.34MHz

CLOCK

IC304 (3/3)

14MHz

X302

(DB870)

1313

STR-DB870/DB1070

Ver 1.1 2001.07

5-2. BLOCK DIAGRAM – AUDIO DSP Section –

(DB870)

(DB1070)

MD/TAPE

DAT/MD

TAPE

(DB1070)

A

(Page 13)

PHONO IN

CD/SACD IN

OUT

VIDEO 2

VIDEO 1

TU L OUT

L

IN

L

IN

L

J201

J302

J303 (1/2)

AUDIO OUT

TV/SAT

AUDIO IN

DVD/LD

AUDIO IN

VIDEO 3

INPUT AUDIO

EQ AMP

IC104

L

J298 (2/2)

(DB1070)

J201

J202

VIDEO SELECT

AUDIO SELECT

IC102

IC201

AUDIO SELECT

IC105

26 23 25 27 22

CONTROL

SCLK

3 4

2

8

6

11

10

CONTROL

SCLK

27

26

25

24

22

21

19

CONTROL

1514 16

SDAT

1514 16

SDAT

1514 16

SLAT

CD IN

D

(Page 15)

2NDL

E

2CHL

SDO1, SDO2,

SDO3

BCKO,

SCKOUT

SDO4

LRCKO

(Page 15)

Q

(Page 15)

F

(Page 15)

G

(Page 15)

H

(Page 15)

(DB1070)

I

(Page 15)

J303 (2/2)

DIGITAL ∑

MODULATOR

A/D CONVERTER

RSTB

6

L

R

SERIAL I/O

IC1101

2ND ROOM

OUT

D

OUT

LRCK

INTERFACE

BCK

SYCLK

S-RAM IC1502

CS

7 – 10, 13 – 16,

29 – 32, 35 – 38

108, 107, 105 – 102,

99, 98, 80 – 77,

69

GP8

75 – 72

D0 – D15

MCLK112MCLK2

9

X1501

13.5MHz

A B DI CE CLK DO XMODE CKSEL1

91 37 OPT A 36 OPT B 75 DI 74 CE 73 CLK 76 DO 71 XMODE 72 CKSEL1

15

13

14

16

18 SDI1

15 LRCKI1 28 LRCKI2

59 EXLOCK

30 SDI2

17 BCKI1 29 BCKI2

27 – 24, 21 – 18

96, 97, 109, 110, 112,

64 – 66, 82 – 85,

AUDIO DSP1

IC1501

113

90

ADC:RST

5 – 1, 44 – 42,

92 – 95

A0 – A15

PM

GP956BST36HCS35HDOUT32HACN2XRST22KFSIO

68

83

84

GB9

PM1

BST1

2ND AUDIO RY70DATA069XSTATE

7

WE

617

CSO

WEO

4445

23SDO1 24SDO2 25SDO3 26SDO4

19LCKO 20BCKO

34HCLK 33HDIN

67GP10

88

89

85

35

SYSTEM

CONTROLLER

IC1703 (3/7)

HCLK

HCS1

HACN1

HDOUT1

XRST1

27 SDI1 28 SDI2 35 SDI3 39 SDI4

29 LRCKI1 38 BCKI1

75 HCLK 74 HDIN

63 LRCKO 111 GP7 132 GP0

HDIN

D0 – D15 A0 – A15D0 – D15 A0 – A15

7 – 10, 13 – 16,

29 – 32, 35 – 38

D0 – D15 A0 – A15

43, 44, 51, 32, 31,

22 – 20, 52, 53, 56,

79, 57, 58, 67, 68

D16 – D31

HCS82HDOUT83HACN

104103102

HCS2

81

47

HACN2

HDOUT2

GP3

EEROR

76

82

SYSTEM MUTE

116

AUDIO DSP2

IC1601

EXLOCK

PM

141

136120 140

96

79

78

PM2

2EXLOCK

ANALOG DIGITAL

121

S-RAM IC1602

5 – 1, 44 – 42,

27 – 24, 21 – 18

105, 50, 42, 41, 34,

69, 70, 59, 77, 78, 95,

86, 122, 114, 115, 106

A0 – A15

BST8XRST

80

BST2

XRST2

67

DIR ERROR

131

WE

617

CSO

WEO

8485

MCLK2

MCLK1

GP162KFSIO

CS

SDO2

61SDO2

SDO1

60SDO1

SDO3

25SDO3

BCKO

64BCKO

SCKOUT

10SCKOUT

26SDO4

139

144

X1601

13.5MHz

17

12

17

BUFFER

IC103

BUFFER

IC1102

RELAY

DRIVE

Q301

RY301

LIN

1

R-CH

CONVERTER

SIGNAL-END

DEFERENTIAL

CLOCK/

TIMING CONTROL RESET

/POWER CONTROL

(DB870) (DB1070)

MD/TAPE

OPTICAL IN

MD/TAPE

OPTICAL OUT

(DB870) (DB1070)

OPTICAL IN

COAXIAL IN

MD/DAT

OPTICAL OUT

DVD/LD

OPTICAL IN

TV/SAT

OPTICAL IN

MD/DAT

DVD/LD

DIGITAL OPTICAL

RECEIVER

IC1401

DIGITAL OPTICAL

RECEIVER

IC1402

DIGITAL OPTICAL

RECEIVER

IC1403

J1401

DIGITAL OPTICAL

TRANSCEIVER

IC1404

IC1405

DIGITAL SELECT

IC1406

5

4

3

6

9

SDAT

SLAT

SCLK

AB

14 2

7

10 11 12

Q1402

Q1401

DIGITAL AUDIO INTERFACE RECEIVER

DIN0

3

INPUT

CKSEK1

B

A

47

CKSEL1

IC1408

DATA

DEMODULATOR

TIMING

CLOCK

MICON INTERFACE

36 37 38 35

DICECLK

DO

LOCK

DETECT

XMODE

DATAO

CKOUT

XSTATE

AUDIO

48

X MODE

ERROR

BCK

LRCK

XMCK

XIN

MUTING SWITCH

OSC

IC1410

Q1705

7

D1703

D1702

CLOCK SELECT

IC1407

2

1

5

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

6

• SIGNAL PATH

16

34

13 14 15

17

20

22

24

COUNTER

IC1409

2635

: TUNER

X1401

24.576MHz

: AUDIO IN (ANALOG)

: AUDIO IN (DIGITAL)

MUTING SWITCH

Q1703

MUTING SWITCH

Q1704

SCLK, SDAT, SLAT

S MUTE

J

(Page 17)

K

(Page 15)

1414

5-3. BLOCK DIAGRAM – AUDIO CONTROL Section –

STR-DB870/DB1070

Ver 1.1 2001.07

(Page 14)

(DE870)

(DE1070)

(DB1070)

(Page 14)

(DB1070)

(Page 14)

D

MULTI CH IN

MULTI CH IN2

MULTI CH IN1

E

Q

F

G

I

H

K

CD IN

2NDL

2CHL

SDO1, SDO2, SDO3

BCKO, SCKOUT

LRCKO

SDO4

S MUTE

SURROUND

FRONT

CENTER

SUB WOOFER

FRONT

CENTER

SURROUND BACK

SUB WOOFER

SDO2 SDO1 SDO3

BCKO SCKOUT

(DB1070)

J305

MUTING

Q651

MUTING

Q601

MUTING

Q501

MUTING

Q451

MUTING

Q701

26 5.1L

35 5.1SL

39 5.1C

31 5.1SW

4 6.0

27 6.1L

36 6.1SL

40 6.1C

3 6.1SB

32 6.1SW

41 2NDL

28 2CHL

5 D/ASB

38 D/AC

34 D/ASL

D/AL

25

30 D/ASW

(DB1070)

AUDIO SELECT

IC101

CLK22DATA23LAT

21

CLK

120CD DIRECT

4WOOFER RY 8PRE RY

LOUT

DATA

LAT

IN

(DB870)

7

14

7

14

(DB1070)

IN

LEVEL SHIFT

CIRCUIT

CLK

10

CLK

LEVEL SHIFT

CIRCUIT

CLK

10

CLK

LEVEL SHIFT

CIRCUIT

CLK

10

CLK

LEVEL SHIFT

CIRCUIT

CLK

10

CLK

24

RY805

RELAY DRIVE

Q815

37COUT

6SBOUT

33SLOUT

29SWOUT

DATA12LAT

11

DATA

DATA12LAT

11

DATA

DATA12LAT

11

DATA

DATA12LAT

11

DATA

LAT

OUT

TRIM

OUT

TRIM

OUT

TRIM

OUT

TRIM

OUT

TRIM

5

4

3

ELECTRICAL

VOLUME

16

17

18

5

4

3

ELECTRICAL

VOLUME

16

17

18

ELECTRICAL

VOLUME

16

17

18

ELECTRICAL

VOLUME

BUFFER

IC402

IC401

BUFFER

IC602 (1/2)

BUFFER

IC602 (2/2)

IC601

BUFFER

IC502

IC501

BUFFER

IC702

IC701

(DB870)

RY808

RY809

RELAY DRIVE

Q825

RELAY DRIVE

Q826

-1

-2

L OUT

C OUT

SB OUT

R-CH

SR-CH

SL OUT

RY810RY807

CLK, DATA, LAT

J402

J403

J701

J401

L

M

N

O

P

R

(Page 16)

(DB1070)

L

FRONT

R

L

SURROUND

R

(Page 16)

CENTER

SUB WOOFER

L

SURROUND

R

(Page 17)

PRE OUT

(DB870)

BACK

(DB1070)

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

• SIGNAL PATH

L

J304

L

J307

DATA2

46

DATA1

45

DATA3

47

BCK

40

SCKI

38

LRCK

41

2 DATA

1 BCK

16 SCK

3 LRCK

INTERFACE

SERIAL INPUT

MODE CONTROL

INTERFACE

MDI35MC36ML37RST33MDO

34

14MC13

MD

D/A

CONVERTER

IC1202

15

DIGITAL FILTER

MULT-FUNCTION

X8 OVER SAMPLING

ML

RST

MDO

ML

D/A

CONVERTER

D/A CONVERTER

7VO L

LPF

AMP

LPF

AMP

LPF

AMP

LPF

AMP

IC1201

MDI MCI

VOUT6

VOUT5

VOUT3

VOUT4

VOUT1

VOUT2

MDI MCI

ML RST MDO

9

10

12

11

14

13

LINE AMP

IC1261 (1/2)

IC1261 (2/2)

R-CH

IC1281

93 DA1LAT 92 DACINT

108 DA1DO

95 DACDI 94 DACCLK

119 DA2 LAT

LINE AMP

IC1241

LINE AMP

IC1221

MUTING

DRIVE

Q813

SYSTEM

CONTROLLER

IC1703 (4/7)

: TUNER

: AUDIO IN (ANALOG)

: AUDUI IN (DIGITAL)

1515

STR-DB870/DB1070

Ver 1.1 2001.07

5-4. BLOCK DIAGRAM – POWER AMP Section –

(Page 15)

(DB1070)

(Page 15)

L OUT INPUT

L

C OUT INPUT

M

SB OUT INPUT

N

SL OUT INPUT

O

6

8

6

8

PRE

DRIVE

PRE

DRIVE

PRE

DRIVE

PRE

DRIVE

POWER AMP

IC503

POWER AMP

IC403

BIAS

CIRCUIT

REG/PROTECTOR

VCC VCC VEE

1 13 14 15

POWER AMP

IC603

BIAS

CIRCUIT

REG/PROTECTOR

VCC VCC VEE

13 14

VCC VCC

BIAS

CIRCUIT

REG/PROTECTOR

1

NF

5

+VEOUT

–VEOUT

+VEOUT

–VEOUT

+VEOUT

–VEOUT

+VEOUT

–VEOUT

2

3

NF

9

12

11

2

3

NF

5

NF

9

12

11

DRIVE

B+

B–

DRIVE

151

B+ B–

15

VEE

DRIVE

BIAS

Q440

LIMITER SWITCH

Q806

B–

BIAS Q640

BIAS Q690

BIAS Q540

BOOSTER

Q402

BOOSTER

Q403

OVER LOAD

DETECTOR

IC803,

Q801, 804

BOOSTER

Q602

BOOSTER

Q603

BOOSTER

Q652

BOOSTER

Q653

BOOSTER

Q502

BOOSTER

Q503

AF POWER

SENSOR

Q406

AF POWER

SENSOR

Q606

AF POWER

SENSOR

Q656

AF POWER

SENSOR

Q506

CURRENT

DETECT

Q404, 405

CURRENT

DETECT

Q604, 605

CURRENT

DETECT

Q654, 655

(DB1070)

CURRENT

DETECT

Q504, 505

AF POWER

PROTECTOR

Q802, 803,

Q805

RELAY DRIVE

Q807

RY801

RELAY DRIVE

Q808

RY802

RELAY DRIVE

Q823

RY806

RELAY DRIVE

Q809

–1

–2

R-CH

RY803

R-CH

TM502

+ –

– +

TM501

+ –

– +

+ –

– +

J749

PHONES

L

FRONT

SPEAKERS

IMPEDANCE

USE 4-6Ω

R

CENTER

SURROUND BACK

(DB1070)

L

SURROUND

R

SPEAKERS

IMPEDANCE

USE 4-6Ω

MUTING

DRIVE

Q811, 812

EEPROM

IC1701

5 99

SDA

6 100

SCL

SYSTEM CONTROLLER

IC1703 (5/7)

PROTECTOR

H. P IN

AC MUTE REAR RY

117 5

SP A RY

EEPROM SDA

EEPROM SCL

H/P RY

CENTER RY

SB RY

1616

118

1

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

• SIGNAL PATH

2

3

6

10

D803

D802

: TUNER

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

STR-DB870/DB1070

Ver 1.1 2001.07

(DB1070)

COMPONENT

VIDEO

TV/SAT IN

COMPONENT

VIDEO

DVD/LD IN

(US, Canadian)

CONTROL A1

PBB-Y

PRR-Y

PBB-Y

PRR-Y

(Page 13)

J754

TV/SAT CTRL S

STATUS IN

J756

VIDEO 1

CTRL S

OUT

J755

DVD/LD

CTRL S

OUT

J753

MONITOR

CTRL S

IN

J303

(Page 13)

(Page 14)

(Page 15)

J301 (1/2)

Y

II

SW3, SW4

C

DATA, CLK

B

SCLK, SDAT, SLAT

J

CLK, DATA, LAT

P

BUFFER

Q750, 751

VIDEO SELECT

IC303

13

12

3

5

1

2

CONTROL

11 10 9 6

SW3

CONTROL S I/O SWITCH

O2-1

11

O2-2

10

IN1

13

DATA

OUTPUT CIRCUIT

INPUT

CIRCUIT

INH

CLK

LAT

INH

SW4

IC751

14

4

15

Q302

REMOTE CONTROL RECEIVER

O3-1

O3-2

IN3

OUT1

IC1701

LEVEL SHIFT

IC804

6

7

4

2

VOL LAT

LINE AMP

IC301 (1/2)

LINE AMP

IC302

LINE AMP

IC301 (2/2)

I/O BUFFER

Q1701

CLK DATA FUNC LAT

J301(2/2)

BUFFER

Q752, 753

BUFFER

Q1702

CLK

DATA

Y

PBB-Y

PRR-Y

D1701

COMPONENT

VIDEO

MONITOR OUT

X1701

16.5MHz

SYSTEM CONTROLLER

63 MBUS TV

65 BUS VIDEO

64 MBUS DVD

41 M STSTUS

66 SIRCS

57 X1

58 X2

86 A1 IN

87 A1 OUT

IC1703 (6/7)

CLK21DATA24F. SW LAT

22

115

AD5

AD4

AD3

AD2

AD1

VOL IC LAT

15V. JOG 16V. JOG

13F. JOG 14F. JOG

11C. JOG 12C. JOG

136

135

134

133

132

17SP. SW

111CLK 112DIN 113LAT 114CLR

50AUDIO SPLIT LED

62POWER

39LED CR 38LED CE

LED CLK LED DATA

FL4 FL1 FL3 FL2

LED CLR LED LAT

A B

D1801

AUDIO SPILIT

S1704

I

/ 1

S1701

SPEAKERS

ON

OFF

LEVEL SHIFT

IC1610

LEVEL SHIFT

IC1603

RV1601

MASTER

VOLUME

RV1801

FUNCTION

RV1901

(JOG DIAL)

S1801 – 1803,

S1931 – 1934

S1921 – 1925

S1901 – 1908

S1911 – 1918

S1702, 1703,

S1941 – 1945

(S1941:DB1070)

LED2 LED3 LED4 LED1

FL4 FL1 FL3 FL2

FL DISPLAY DRIVE

30 CLK 28 DIN 31 LAT 32 CL

CLR

19

STB

18

CLK

17

DATA

16

• SIGNAL PATH

IC1601

SHIFT

REGISTER

: VIDEO IN

2 – 23

HVO24 – HVO3

1, 70 – 37

HVO25 – HVO59

LED DRIVE

IC1602

G1 – G22

P01 – P35

PARALLEL

DATA

OUTPUT

F1

FL1601

FLUORESCENT

INDICATOR

TUBE

F2

D1601 – 1619,

D1901 – 1905

1 – 7, 9 – 15, 20 – 29

(Page 15)

R

CLK, DATA, LAT

CLK

DATA

LAT

LEVEL SHIFT

IC805

VOL LAT

CLK DATA FUNC LAT

Q810

1717

STR-DB870/DB1070

Ver 1.1 2001.07

5-6. BLOCK DIAGRAM – POWER SUPPLY Section –

CN1107

(FOR CHECK)

MD2

MD0

RESET

MD2

MD0

RSTX

52

MD254MD0

SYSTEM

CONTROLLER

IC1703

(7/7)

SIN1

110

SIN1

SOT1

109

SIN1

SOT1

S901

IMPEDANCE

SELECTOR

8Ω

(US, Canadian)

F906

POWER AMP

+5V

IC1807

REGULATOR

Q824

+12V

REGULATOR

IC1301

B+ SWITCH

Q1801, 1802

B+ SWITCH

Q1803, 1804

+5V

+12V

(TUNER UNIT)

D1803

+3.3V

REGULATOR

IC1302

+5V

REGULATOR

IC1808

REGULATOR

B+ SWITCH

+5V

IC1801

+5V

IC1802

Q1810

D POWER

SWITCH

Q1813, 1814

REGULATOR

+3.3V

TUNER UNIT

RDS DECODER (IC303) B+

+5V

D/A, A/D CONVERTER

(IC1201, 1202, 1503) B+

GND

VDD

STBY +3.3V

DIGTAL OPITICAL

RECEIVER/TRANSCEIVER

(IC1401 – 1404) B+

D+2.6V

D+3.3V

42D POWER

D+5V

+5V

+2.6V

REGULATOR

IC1805

+3.3V

REGULATOR

IC1806

+5V

(VIDEO)

(IC403, 503, 603)

D POWER

SWITCH

Q1811, 1812

B+ B–

+15V

– 15V

RECT D914

+32V

FL DISPLAY DRIVE

(IC1601) B+

– 5V

(VIDEO)

EXCEPT

US, Canadian

(US, Canadian)

+24V

(RELAY B+)

+15V

REGULATOR

IC801

– 15V

REGULATOR

IC802

+32V

REGULATOR

Q903

FLUORESCENT INDICATOR TUBE

(FL1601)

– 5V

REGULATOR

Q902

F905

F1

F2

-1

-2

RECT

D903 – 906

RECT

D912, 913

RECT D908

4Ω

F903

F904

T901

POWER

TRANSFORMER

US, Canadian, E2, E3,

VOLTAGE SELECTOR VS49 (1/2)

• Abbrivation E2 : 120 V AC area in E model E3 : 240 V AC area in E model

AC OUTLET

Taiwan, Chinese

EXCEPT

F1

F49

(E2, E3)

CNJ1

E2, E3,

Taiwan

E2, E3, Taiwan

F2

V POWER

SWITCH

Q904, 905

(EXCEPT E2, E3)

43V POWER

+5V

SYSTEM CONTROLLER

(IC1703) B+

55RSTX

49SUB T. PORT

60STOP

18POWER RY

RESET SIGNAL

GENERATOR

IC1702

+3.3V

REGULATOR

IC1804

STBY +5V

+5V

REGULATOR

IC1803

D1801

B+ SWITCH

Q52, 53

RECT

D54 – 57

AC POWER

DETECT

Q54

D58

D52

D53

T2

POWER

TRANSFORMER

VOLTAGE SELECTOR VS49 (1/2)

(E2, E3)

RY1

RELAY DRIVE

Q51

AC IN

1818

5-7. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

STR-DB870/DB1070

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

• : 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 f ace are indicated. Parts face side: Parts on the parts face side seen from (Component Side) the parts face are indicated.

• Indication of transistor

C

B

Q

B

E

Q

CE

Q

CE

These are omitted.

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.

• All resistors are in Ω and 1/ specified.

f

•

• 2 : nonflammable resistor.

• C : panel designation.

Note:

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

• A : B+ Line.

• B : B– Line.

• 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.

under no-signal (detuned) conditions. no mark : TUNER

Voltage variations may be noted due to normal production tolerances.

F : TUNER J : AUDIO IN (ANALOG) c : AUDIO IN (DIGITAL) E : VIDEO IN

CH : Chinese model CND : Canadian model E2 : 120 V AC area in E model E3 : 240 V AC area in E model KR : Korean model MY : Malaysia model SP : Singapore model TW : Taiwan model

: Impossible to measure

∗

4

W or less unless otherwise

Note:

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

19

STR-DB870/DB1070

d

• Circuit Boards Location

H.P board

VIDEO 3 board

POWER board

SW board

DC2 board

MUTING board

SP board

VIDEO board

S-VIDEO board

DIGITAL boar

BIAS board

DC1 board

DISP board

V.SWITCH board (120 V AC area and 240 V AC area in E models)

AC board

VIDEO AU board

TUNER

MAIN board

20

5-8. SCHEMATIC DIAGRAM – DIGITAL Board (1/5) – • See page 44 for Waveforms. • See page 44 for IC Block Diagrams.

*FM/AM TUNER UNIT

+5V REGULATOR

C1801

100 16V

0.1

1402 C

C1403

0.1

C1404

0.1

C1405

0.1

IC1801

7805

C1427

C1406

22 50V

B1

B2

B3

R1304

39k

+12V REGULATOR

IGO

Q1801

2SB733

B+ SWITCH

R1801 R1802

680 10k

Q1802

RT1N141C

V POWER

ON/OFF

FB1401

C1309

C1310

21A

100 16V

+3.3V REGULATOR

R1403

1k

INVERTER

IC1405

TC7WU04F

IC1301

7812

IGO

C1411

10

50V

IC1406

TC74HC153

DIGITAL SELECT

R1404 560k

IC1302

2933

FB1402

B4

B5

B6

B7

B8

IGO

0.1

C1315

0.1 47p

C1313

C1314

82p

R1307

X1301

2.2k

4.332MHz

R1308

+5V REGULATOR

IC1802

7805

IGO

Q1803

2SB733

B+ SWITCH

R1803

680

Q1804

C1802

470 16V

21A

C1413

0.1

8

R1409

1p

22k

C140

VCC

GND

R1405

100

R1429

RT1N141C

D POWER

ON/OFF

R1414

10k

R1415

10k

2SC2712

INVERTER

FB1403

C1409

0.1

0

Q1402

2SC2712

INVERTER

Q1401

21A

6V 1

470

10 14

C

FB1404

21A

C1415

0.01

C1416

0.22

100

R1804

R1412

5.6k

R1413R1410

CLOCK

SELECT

IC1407

TC7WH157FU

RDS DECODER

BU1924F

IC1303

T2

CMP

T1

VSS3

VSS2

VSS1

VDD2

VDD1

XI

MUX

XO

VREF

NC

RDAT

RCLK

QUAL

D1801 1SR154

10k

R1417

10k

R1416

10k

C1419

0.1

4.7k33k

C1417C1412 R1411

0.10.1 100 C1418

47

16V

FB1405

471

L1201

0

C1319 1000p

C1317

10

0.1

C1316

1B 2

330p

H6

C1318

(AEP,UK)

C1807

220 16V

C1421R1420

DIGITAL AUDIO

INTERFACE RECEIVER

LC89056W-E

C1422

R1424

100

423

421

1

R

H1

R1422

50V

10

50V

H5

0.110k

IC1408

0.1

R1437

220

FB1407

21B

100

C1320

IC1803

2905

IGOI

H7

R1419C1420

10k1000p

R1435C1414

1000.1

R1436

100

406 1

FB

R1418

100

STEREO

TUNED

MUTING

R CH

BLOCK

GND

L CH

FM DET OUT

VDD 12V

VDD 3.3V

FMIF OUT

GND

DO

CLOCK

DATA

CE

(Page 29)

DVD/LD

OPTICAL

TV/SAT

OPTICAL

(DB870)

MD/TAPE

OPTICAL

IN

MD/DAT

OPTICAL

IN

(DB1070)

(DB870)

MD/TAPE

OPTICAL

OUT

MD/DAT

OPTICAL

OUT

(DB1070)

DVD/LD

COAXIAL

IN

J1401

(CHASSIS)

CN1105

15P

CN1104

*

MBUS_OUT

MBUS_TV

MBUS_DVD

MBUS_V1

SIRCS

+5V(B_UP)

OSD_DATA

OSD_CS

OSD_CLK

V-SYNC

P/N

GND_A1

CTRL A1

V_SW1

V_SW2

V SW3

V SW4

+5V

GND

OPTICAL RECEIVER

TRANSCEIVER

1P

C1401

0.01

AM

FM

75Ω

COAXIAL

*SUPPLIED AS

THE ASSEMBLED

DIGITAL

(US,CND)

DIGITAL

IC1401

TORX179

DIGITAL

TORX178

DIGITAL

TORX178

OPTICAL

TOTX178A

IC1402

IC1403

DIGITAL

IC1404

P1

P2

DB870:CND

/DB1070

10k

R1809

*

CN1104

21P

(US,CND)

15P

(DB1070:AEP,UK,E,CH)

11P

(DB870:AEP,UK)

A10

A11

A12

A13

A14

A15

A16

A1

A2

A3

A4

A5

A6

A7

A8

A9

C1307C1306

0.10.1

C1308 R1303

0.1 39k

R1406

100

R1407

100

R1408

100

R1402

100

R1401

75

STR-DB870/DB1070

CN1106

9P

L1

L2

IC1804

2933

O

G

C1808

470 16V

+3.3V REGULATOR+5V REGULATOR

R1425

100

R1426

100

H4

C1425 100p

R1428

4.7k

R1430

100

R1427

1k

C1431C1423

220

0.1 16V

OSC

R1434

100

C1426

47 16V 0.1

COUNTER

IC1409

TC7WH74FU

C1428

0.1

R1432

100

GND

VCC

IC1410

C1424

TC7WU04F

H3

H2

150

R1433

C1429

15p

30

X1401R1431

14 C

24.576MHz1M

L3

D1802 1SS352

L4

L5

L6

L7

L8

V.POWER

PW_RY

SUB T

STOP

RESET

CN1107

+8V

GND

+32V

FL2

(Page 43)

FL1

MD2

MD0

GND

VDD

SIN1

SOT1-5V

7P

1A

(Page 22)

B

2C

3C

4C

5C

6C

8C

7C

C 9

1

2

3

10C

4

11C

(Page 24)

B

5

6

7

8

9

10B

11B

12B

13B

14B

15B

16B

(Page 23) (Page 25)

D

1

2

17B

18B

19B

2121

STR-DB870/DB1070

R1611

R1612

FB1604

R1608

C1615

C1613

C1612

C1617

C1618

FB1603FB1602

C1610

R1610

R1605

C1611

R1667

R1653

R1655

R1654

R1656

R1657

R1651

R1650

R1666

C1608

C1602

R1607

C1601

R1609

R1606

R1601

C1603

R1602

C1604

R1603

C1605

C1609

C1606

C1607

C1614

FB1601

C1616

IC1602

IC1601

X1601

100

220

21B

0

0.1

47

16V

0.1

470 16V

0.1

21A21A

0.1

100

0.1

0

100

0.1

100

0.1

100

4.7k

100

0.1

100

0.1

10k

0.1

471

0.1

IDT71V016S

CXD9616R

13.5MHz

1A

1E

2E

3E

4E

5E

6E

7E

8E

1F

2F

1G

2G

3G

4G

5G

6G

3F

E1

E2

E3

E4

E5

E15

E16

E17

E18

E19

E20

E21

E22

E23

E24

E25

E26

E27

E28

E29

E30

E31

E32

E33

E34

E1

E2

E3

E4

E5

E6

E7

E8

E9

E10

E11

E12

E13

E14

E15

E16

E17

E18

E19

E20

E21

E22

E23

E24

E25

E26

E27

E28

E29

E30

E31

E32

E33

E34

I2I3I4

I5

I6

I7

M1

M2

O1

O2

O3

O4

E6

E7

E8

E10

E11

E12

E13

E14

I1

M3

E9

S-RAM

AUDIO DSP2

5-9. SCHEMATIC DIAGRAM – DIGITAL Board (2/5) – • See page 44 for Waveform.

(Page 24)

(Page 23)

(Page 21)

(Page 25)

2222

5-10. SCHEMATIC DIAGRAM – DIGITAL Board (3/5) – • See page 44 for Waveform.

STR-DB870/DB1070

(Page 21)

(Page

22)

(Page 24)

A1

0 0 1

6 6 7 1 R

C14

(US,CND,E,CH)

B

0

9

1

R1768

100

FB1703

21A

C15

R1765

1k

*

R1759

0 (AEP,UK)

(E2,E3)

2.2k

(MY,SP,TW,KR,CH)

10k

R1758

10k

R1759

*

(AEP,UK,E,CH)

B

1

2

1E

A5

2E

3E

4E

R1704R1703

10k10

A11

1SS352

R1707

4.7k

D1701

R1706

10k

R1702

10k

EEPROM

Q1701

2SC2712-YG

I/O

BUFFER

A12

5E

6E

7E

8E

1H

2H

3H

4H

G3

G2

A8

A6

A7

IC1701

BR24C16

C1701

0.1

M1

M2

M3

G7

G6

G5

R1708

G1

N1

N2

N3

N4

N5

100

R1705

100

R1716

100

R1717

100

R1718

100

R1719

100

R1720

100

B

3

4

5

R1799

10k

C1706

C1719 C1707

0.1

0.1 0.1

C1713

10

50V

(US,CND)

R1743

100

(AEP,UK,E,CH)

H7

H6

H1

R1739

100

0

2

1

2

0

2

4

7

1

R

0 0 1

4 4 7 1 R

D1

C20

C19

C17

C18

L7

L8

k 0 1

6 9 7 1 R

R1727

R1721

R1728

R1729

R1730

R1731

R1732

R1733

D1702

1SS352-TPH

R1736 100k

Q1702

2SC2712-YG

BUFFER

R1741

10k

H5

H4

H3

H2

0

1

4

5

3

2

7

1

R

R1726

100

R1715

100

R1714

100

R1713

100

R1712

100

R1711

100

R1710

100

R1709

100

10k

R1734

10k

R1735

1.5k

C1705

0.1

3.3k

100

R1722

100

R1737

100k

R1738

100k

(US,CND,E,CH)

A3

A4

0 0 1

5 4 7 1 R

5 0 1 1

W J

0 2 2

1 1 8 1 R

0 0 1

7 4 7 1 R

D2

B 6

X1701

A2

L3

16.5MHz

2 0 1 1

W J

0

1

6

8

4

7

1

R

C22

4 0 1 1

W J

0 0 1

0 5 7 1 R

0 0 1

9 4 7 1 R

D3

D4

S-80929ANM

P-DD6-T2

R1753

10k

.1 0

9 0 7 1 C

SYSTEM CONTROLLER

MB91154PMT2

C1714

R1771

10k

C1715

C1716

C1717

C1718

IC1702

R1755

k 0 1

4 5 7 1 R

IC1703

-G-102-E1

0.1

C1712

R1756

10k

C1708

0.1

C1720

10000p

100

0.1

C1711

R1814 R1812

220 220

0.1

C1

C12

RESET SIGNAL

GENERATOR

L1

C10

C11

B

7

8

R1815

100

R1751

10k

7 5

JW1103

0

7 1 R

(DB1070)

C8

C9

B 1 1

A9

R1752C1710

10k0.1

C1721

0.1

(AEP,UK)

R1769 R1770

70)

15k 22k

0 1 B

(D

R1800

220

0.1

C1722

0.1

C1723

0.1

C1724

0.1

C1725

0.1

C1726

0.1

C1727

0.1

C1728

R1767

1k

R1760

R1761

R1762

R1763

R1764

JW1101

(US,CND,E,CH)

10k

B

B 2 1

B8

R1813

220

G4

A10

A16

A15

A14

A13

220

R1772

100

R1773

220

R1774

100

R1775

100

R1776

100

R1777

220

R1778

100

R1779

100

R1780

10k

R1781

10k

R1782

10k

R1783

10k

R1784

10k

R1785

10k

R1786

4.7k

R1787

4.7k

R1788

4.7k

R1789

4.7k

R1790

4.7k

R1791

4.7k

R1792

4.7k

R1793

4.7k

R1794

B

3

4

5

6

1

L6

L4

L5

B6

B7

B1

D14

B5

C16

C13

B3

B2

L2

C21

C2

C4

C3

C5

C6

C7

D13

D12

D11

D10

D9

D8

D7

D6

D5

B4

B

7

8

9

1

+32V

F2

F1

GND

+5V

R1810

C22

C21

C20

C19

C18

C17

C16

C15

C14

C13

C12

C11

C10

C9

C8

C7

C6

C5

C4

C3

C2

C1

+3.3V

POWER

10k

SIRCS

SP ON/OFF

FL CLK

FL LAT

FL CLR

FL DATA

LED CLK

LED LAT

LED CLR

LED DATA

AD1

AD2

(Page 39)

AD3

AD4

AD5

JOG+

JOG-

FUNC+

FUNC-

VOL+

VOL-

AU SPLIT

NC

CN1101

31P

I

I 1

I

2

3

I

4

5

6

7

I

0

1

8

9

1

(Page 25)

2323

STR-DB870/DB1070

5-11. SCHEMATIC DIAGRAM – DIGITAL Board (4/5) – • See page 44 for Waveform. • See page 44 for IC Block Diagram.

(Page 21) (Page 22)

7C

X1501

13.5MHz

8C

F1

R1505

100

C1501

R1508

10k

R1506

R1507

R1501

R1502

R1503

R1504

C1502

0.1

C1503

0

R1509

100

AUDIO DSP1

IC1501

CXD9617R

F11

F12

F10

F8

F9

F7

F3

F2

F5

F4

F14

F13

F19

F18

F16

F17

C1506

0.1

C1510C1504

0.10.1

2C

3C

4C

5C

6C

I1

I2

I3

I4

I5

I6

I7

1F

9C

10C

11C

2F

3F

1H

2H

3H

4H

(Page 23)

S-RAM

IC1502

IDT71V016S

F1

F20

F21

F22

F23

C1515

0.1 F24

F25

F26

F27

F28

F29

F30

F31

C1514

0.1

G7

100

R1512

100

R1513

F32

F33

F34

F2

F3

F4

F5

F6

100

R1566

F7

F8

F9

F10

F11

F12

F13

F14

F15

F16

F17

F18

F19

0.1

F34

F33

F32

F31

F30

F29

F28

C1508C1509

0.1 F27

F26

F25

F24

F23

F22

F21

F20

(Page

33)

CN1103

21P

SOURCE-L

GND

SOURCE-R

GND

DB9-W/DB8-NC

GND

DB9-SB/DB8-W

GND

C

GND

SR

GND

SL

GND

FRONT-R

GND

FRONT-L

GND

TUNER-R

GND

TUNER-L

C1516

0.1

C1505

R1510

100

R1101

100

C1110

0.1

C1109

47 16V

C1105 C1108

C1101

0.1

C1102

47

K1

K2

K3

K4

K5

K6

K7

K8

P1

P2

16V

A/D CONVERTER

IC1101

PCM1800

470p 470p

C1103

10 50V

C1104

4.7 50V

C1107

C1106

4.7 50V

FB1101

10 50V

G5

G4

G3

G2

G1

21B

R1121

33k

R1122

33k

R1132

33k

C1121

22 50

FB1102

21A

K1 K2

F15

F6

BUFFER

IC1102

M5218AFP-T

VEE VCC

R1124 100k

C1114

100p

0.1 0.1

C1112 C1113

C1507

0.1

R1131

33k

VCC

R1134

100k

G6

(DB1070)

50V

C1131

22

C1512

C1511 C1513

0.1

0.1 47 16V

J1

C1281 C1282

22

LINE AMP

IC1281

M5218AFP

VEE VEE VEE

50V

R1282

1.5k

R1281

C1283

C1284 C1274

22

50V

K3

470 16V

FB1502FB1501

22k

180p

C1517

21A21A

1800p

0.1

J2

22

1800p

50V

R1271

1272

22k

R

C1273

180p

R1273R1283

220220

22

50V

K4

IC1261

M5218AFP

1.5k

VCC VCC VCC

R1274 R1264R1284C1115

100k 100k100k100p

J3

50V

1.5k

R1261

C1264

22

50V

K5

R1262 R1251

C1263

J4

C1251

C1252C1262C1261C1271C1272

22

1800p1800p22

50V

IC1241

22k 1.5k

22k

R1252

180p

C1253

180p

C1254 C1244

22

50V

K6

M5218AFP

R1254 R1244

100k 100k

J5

22

50V

R1242

1.5k

1241 R

C1243

180p

R1243R1263 R1253

220220 220

22

50V

K7

J6

C1231C1241

22

50V

R1231

1.5k

R1233

220

C1234

22

50V

LINE AMPLINE AMPLINE AMP

IC1221

M5218AFP

VEE

R1234 R1224

100k 100k

C1232C1242 1800p1800p

22k

R1232

180p

C1233

K8

J7

C1221

C1222

22

1800p

50V

1.5k

R1222

22k

R1221

C1223

180p

R1223

220

C1224

22

50V

1J

2J

3J

(Page

25)

4J

5J

6J

7J

8J

9J

2424

5-12. SCHEMATIC DIAGRAM – DIGITAL Board (5/5) – • See page 44 for IC Block Diagrams.

STR-DB870/DB1070

(Page

22)

(Page 23)

4I

5I

6I

2I

C1213

3I

10

50V

1I

3

4

2

5

N

1G

2G

3G

4G

5G

6G

O1

N1

FB1201

R1204

21A

10k

(DB1070)

C1212

R1212

100

C1206C1205C1214

0.110 50V4700p

C1210

J1

R1280

8.2k

0.1

IC1202

PCM1748

D/A CONVERTER

C1208

0.1

10

50V

7I

8I

9I

1D

2D

10I

11I

(Page 21)

(Page 24)

C1201

C1202

330

0.1

25V

O2

R1202

R1203

100

R1201

100

*

C1811,1815

1000 16V

(DB870/EXCEPT DB1070: AEP, UK)

1000 63V (DB1070:AEP, UK)

O3

O4

1J

2J

3J

4J

5J

6J

7J

8J

9J

D/A CONVERTER

IC1201

PCM1604Y/2K

0.1

C1203

8.2k

R1270

J2

8.2k

R1260

J3

8.2k

R1250

J4

C1815

C1811

8.2k

R1240

J5

*

C1204

220 16V

FB1202

21A

+5V REGULATOR

IC1806 IC1805

2933 NJM2391-26

R1220

R1230

C1211

0.1

C1207

10

50V

8.2k J7

J6

8.2k

D1703

1SS184

Q1813,1814

D POWER

R1807

SWITCH

2SB733

680

D1803

1SR154

Q1813

R1808

10k

Q1814

RT1N141C

2SD1733

B+ SWITCH

Q1810

C1809

IC1808

7805

OGI

+2.5V REGULATOR+3.3V REGULATOR

OGIOGI

470 16V

Q1703-1705

MUTING SWITCH

Q1703

RT1N141C-T

C1812

4700

6.3V

R1701

10k

2SC2712-YG

C1702

220p

+5V REGULATOR

IC1807

7805

OGI

Q1705

Q1704

2SC2712-YG

R1798

10k

Q1811,1812

D POWER

SWITCH

R1797

10k

R1805

R1795

10k

Q1811

2SB733

680

Q1812

RT1N141C

R1806

CN1108

3P

-5V

D.GND

8V

CN1102

DATA

D14

D13

D12

D11

D10

D9

D8

D7

10k

D6

D5

D4

D3

D2

D1

FUNC-LAT

PRE-RY

2ND-RY

REAR-RY

W-FR-RY

SP-FR-RY

HP-CONT

PROTECTOR

AC-MUTE

VOL-LAT

S-MUTE

CN1109

SB-RY

C-RY

HP-RY

CD-RY

+15V

2P

(Page 43)

21P

CLK

(Page 35)

GND

-15V

(Page 35)

2525

STR-DB870/DB1070

5-13. PRINTED WIRING BOARD – DIGITAL Board (Component Side) – • See page 20 for Circuit Boards Location.

• Semiconductor Location

Ref. No. Location

D1701 D-11 D1702 F-13 D1703 G-13 D1801 B-14 D1802 B-16 D1803 I-15

IC1101 H-4 IC1102 J-3 IC1201 I-10 IC1202 I-11 IC1221 I-8 IC1241 I-7 IC1261 I-5 IC1281 I-4 IC1303 B-3 IC1405 G-2 IC1406 D-2 IC1407 F-3 IC1408 E-4 IC1409 E-4 IC1410 F-4 IC1501 F-6 IC1502 D-6 IC1601 G-9 IC1602 E-9 IC1701 F-12 IC1702 C-14 IC1703 E-13

Q1401 C-3 Q1402 C-3 Q1703 G-13 Q1704 G-13 Q1705 G-13 Q1802 B-10 Q1804 B-11 Q1812 I-14 Q1814 J-13

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

A

DIGITAL BOARD

B

C1314

C

R1406

D

IC1406

R1407

E

IC1407

R1408

F

R1402

G

IC1405

H

I

J

R1404

X1301

FB1402

C1413

R1435

R1409

C1408

R1403

R1405

R1122

(COMPONENT SIDE)

C1313

L1201

C1315

C1320

IC1303

Q1402

R1307

R1414

R1415

Q1401

R1412

R1413

R1421

R1434

R1410

R1436

FB1406

C1415

X1401

R1437

R1422

C1105

FB1403

C1414

FB1405

R1418

IC1101

C1101

C1113

R1121

IC1102

C1112

R1124

C1319

C1316

E

R1419

C1420

IC1410

R1433

R1431

R1424

R1423

C1108

R1308

(AEP, UK)

R1417

R1416

R1420

R1425

IC1408

FB1407

R1101

FB1101

R1131

R1134

R1430

R1428

C1428

R1429

R1506

IC1281

(DB1070)

R1132

R1426

IC1409

R1432

R1507

R1501

R1284

R1427

R1505

R1502

R1566

R1508

C1273

R1503

C1308

R1504

IC1261

R1274

IC1502

IC1501

R1510

C1253

C1263

R1264

R1254

R1809

FB1501

IC1241

R1754

E

Q1814

C1711

R1755

R1751

JW1103

R1767

R1797

Q1705

E

D1801

IC1702

135

4

R1794

(US, CND, E, CH)

(AEP, UK)

Q1812

R1805

R1806

C1720

R1766

R1793

D1802

R1800

R1765

R1768

R1770

R1769

(DB1070)

R1772

R1775

R1777

R1776

R1789

R1788

R1778

R1787

R1786

R1779

R1780

R1781

R1785

R1784

R1783

R1774

R1790

R1792

R1791

D1803

R1810

R1782

1-681-098-

11

(11)

R1750

IC1703

D1702

R1796

E

D1703

R1798

Q1704

A

R1807

R1701

R1795

K

R1808

E

A

R1723

R1203

R1716

R1724

R1202

R1705

R1650

R1651

R1725

R1726

E

Q1804

R1803

R1804

R1739

R1709

R1708

R1710

R1707

R1718

R1719

R1740

D1701

R1717

R1720

R1711

R1715

R1742

R1714

R1721

(US, CND)

R1745

R1746

R1748

R1743

IC1701

R1744

R1747

R1728

R1729

R1730

Q1703

R1731

R1611

R1612

FB1604

R1732

R1733

R1722

IC1202

(DB1070)

E

Q1802

R1801

R1802

R1666

R1606

IC1602

IC1601

C1618

R1220

C1223

R1224R1234

IC1201

R1201

R1602

C1233

R1603

R1230

IC1221

C1243

R1244

2626

5-14. PRINTED WIRING BOARD – DIGITAL Board (Conductor Side) – • See page 20 for Circuit Boards Location.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

STR-DB870/DB1070

A

B

C

D

E

F

G

H

I

J

K

C

DISP BOARD CN1601

(Page 38)

E

DC2

BOARD

CN901

(Page 42)

G

MAIN

BOARD

CN808

(Page 32)

DIGITAL BOARD

31

CN1101

1

CP1103

13

CN1109

12

IC1805

(Page 42)

DC2 BOARD

B

(CONDUCTOR SIDE)

CN903

IC1804

19

30

C1723

2

CN1108

C1812

IC1807

Q1810

CN1106

CN1107

17

C1719

FB1703

C1713

C1725

C1724

B

C

E

3

1

C1727

C1726

C1728

(US, CND, E, CH)

R1773

C1811

31

3

R1813

JW1101

1

C1809

R1752

C1710

C1722

C1718

C1714

R1764

R1760

C1721

IC1806

Q1811

(US, CND, E, CH)

B

C

E

13

C1712

C1715

R1761

R1758

R1757

(DB1070)

C1702

R1812

C1716

R1762

R1756

X1701

JW1104

JW1105

R1799

C1709

JW1102

C1707

R1814

R1706

C1717

C1705

R1763

R1815

C1708

R1771

R1749

R1759

(AEP, UK, E, CH)

C1815

31

B

C

E

Q1813

IC1803

13

R1736

B

C

E

Q1803

R1704

R1703

R1734

C1701

R1702

C1205

FB1201

C1206

(DB1070)

R1811

R1741

C1706

R1753

IC1808

21

C1807C1808

(AEP, UK, E, CH)

Q1702

R1727

R1738

R1737

20

IC1802

13

Q1701

EE

R1713

R1712

R1735

C1213

CN1102

C1802

JW1001

(DB1070)

R1212

13

Q1801

C1616

R1608

R1610

C1208

C1212

C1202

C1201

2

1

IC1801

B

C

E

R1667

R1605

C1611

C1615

C1214

R1204

FB1202

R1653

C1614

C1211

C1801

R1654

FB1603

C1210

R1655

C1608

C1609

C1607 C1606

C1610

FB1601

C1204

C1203

R1656

R1607

(US, CND)

R1657

JW1002

JW1003

C1602

C1601

C1603

C1604

C1605

C1617

C1221

C1207

C1222

R1221

R1222

R1223

C1224

AM

FM

75Ω

(Page 28)

VIDEO BOARD

A

CN303

COAXIAL

*FM/AM TUNER UNIT

*SUPPLIED AS THE

ASSEMBLED BLOCK

• Semiconductor Location

Ref. No. Location

IC1301 C-17

C1411

IC1402

IC1404

C1406

IC1301

113 3

C1311

C1310

IC1401

C1402

C1403

C1404

IC1403

C1405

C1427

C1309

FB1401

3

1

3

1

3

1

3

1

R1401

C1401

1-681-098-

DVD/LD

OPTICAL

IN

TV/SAT

OPTICAL

IN

DIGITAL

(DB870)

MD/TAPE OPTICAL

IN

MD/DAT OPTICAL

IN

(DB1070)

(DB870)

MD/TAPE OPTICAL

OUT

MD/DAT OPTICAL

OUT

(DB1070)

J1401

DVD/LD

COAXIAL

IN

11

(11)

IC1302

C1317

C1307

R1271

R1272

R1273

2

CN1105

CP1101

C1318

C1425

C1115

C1426

C1109

C1107

C1131

C1419

C1417

C1424

C1110

(AEP, UK)

C1416

C1429

C1430

FB1102

C1106

C1431

C1423

C1503

R1509

R1280

C1282

R1281

R1282

(DB1070)

1

C1421

C1422

X1501

C1283

R1283

C1418

R1411

C1409

C1412

C1114

C1312

C1410

C1102

C1104

FB1404

C1103

C1121

CN1104

DB870: CND/

DB1070

R1512

JW1004

C1613

C1612

JW1005

FB1602

X1601

R1250

C1231

R1231

R1601

C1516

FB1502

R1513

R1240

R1241

R1232

C1234

R1609

C1232

R1233

R1242

C1241

C1244

21

JW1006

C1242

R1243

C1515

C1514

C1517

C1512

C1513

C1252

20

R1303

C1510

C1507

C1511

C1251

R1251

R1252

R1253

C1254 C1274 C1284

CN1103

C1306

C1508

C1509

C1506

C1504

C1502

C1501

C1505

R1260

C1262

R1261

R1262

R1263

R1270

C1261 C1271 C1281

C1272

C1264

IC1302 C-16 IC1401 D-17 IC1402 E-17 IC1403 G-17 IC1404 H-17 IC1801 C-9 IC1802 C-8 IC1803 C-6 IC1804 C-5 IC1805 K-3 IC1806 I-4 IC1807 I-4 IC1808 J-6

Q1701 E-7 Q1702 E-6 Q1801 C-8 Q1803 C-7 Q1810 J-3 Q1811 K-5 Q1813 K-6

L

MAIN BOARD

F

CN806

(Page 32) (Page 32)

D

MAIN BOARD

CN807

2727

STR-DB870/DB1070

5-15. PRINTED WIRING BOARD – VIDEO Board – • See page 20 for Circuit Boards Location.

• Semiconductor Location

Ref. No. Location

D301 E-7 D303 C-2 D304 C-2

IC301 C-5 IC302 C-6 IC303 C-7 IC304 E-3 IC305 E-5 IC306 E-4 IC307 E-7 IC308 C-3 IC309 D-7 IC310 E-2 IC311 D-6 IC312 C-2

Q302 C-5 Q304 E-8 Q305 E-7

A

B

C

D

E

F

A

DIGITAL

BOARD CN1104

(Page 27)

1 2 3 4 5 6 7 8

J301

COMPONENT VIDEO

VIDEO BOARD

J303

CONTROL A1 II

C354

C373

JW100

JW99

JW101

JW102

JW319

JW103

JW104

JW105

C365

C364

JW107

JW108

DB870: CND/

CN303

JW132

JW133

JW131

J302

MONITOR

OUT VIDEO

R338

C351

C342

C346

C335

R342

C378

(DB870)

C369

JW82

C374

R351

1

D304

C360

JW106

C358

D303

JW83

C367

17

IC312

14

JW109

DB1070

JW110

JW112

JW113

JW111

(US, CND)

JW127

17

JW130

JW318

JW129

(US, CND)

C324

CN302

C377

DB870: CND/

DB1070

FL304

JW125

IC310

14 8

JW126

(DB1070: US, CND)

J305 J304

JW81

JW305

TV/SAT

IN VIDEO

C352

C363

7

DVD/LD

IN VIDEO

C343

R339

C347

IC308

JW320

JW98

8

CN301

17

JW124

JW95

JW97

JW96

814

JW94

JW92

JW93

IC304

R317

R319

C320

JW301

14

C316

X301

CT301

(DB1070: AEP, UK, E, CH)

R327

R324

CT302

X302

8

R328

C323

C322

JW84

JW86

JW87

DB1070: AEP, UK, E, CH

R318

3

R332

1

3

1

R344

JW90

FL301

FL302

JW122

DB1070:

US, CND

VIDEO 2

OUT VIDEO

C336

JW72

JW91

JW88

JW89

JW115

1

R323

14 8

FL303

C332

R334

C350

IN VIDEO OUT VIDEO

C353

C344

R340

C348

R357

E

Q302

C382

R315

JW316

R316

C305

JW317

7

C318

IC306

R322

3

1

R335

JW119

R336

JW118

JW121

CP301

R346

R325

C379

C337

JW314

R313

R320

IC305

VIDEO 1

C349

JW315

IC301

JW313

85

14

IN VIDEO PRR-Y PBB-Y Y PRR-Y

C345

R341

C304

R326

C302

R337

R314

JW312

JW309

R354

JW311

IC302

(DB1070: AEP, UK, E, CH) (DB1070: AEP, UK, E, CH)

C372

C370 C359

JW75

JW79

C315C314

C333

R321

C319

C339

JW80

C331

C330

C307

JW321

FB303

C341

CT303

R303

R359

R356

JW74

3

1

MONITOR

OUT

JW61

R312

C303

R302 R301

C301

R311

R358

JW310

JW73

C376

C375

R355

1515

IC311

R347

JW78

FL305

C340

L301

C326

C325

TV/SAT

C309

R308

JW300

C381

C380

R345

IC309

EE

JW77

Q305 Q304

IC307

C328

CP302

IN

PBB-Y Y PRR-Y PBB-Y Y

JW60

C313

R309

R306

C308

18

DVD/LD

IN

JW59

R304

R310

R307

C312 C311

R305

IC303

16 9

C361

C355

R330

R329

R350

C329

R353

R349

R331

C368

D301

R352

JW76

R333

R343

C366

C362

R348

1

4

(DB1070)

1-681-094-

C310

CN306

11

(11)

S-VIDEO BOARD

H

CN751

(Page 30)

2828

Sony STR-DB870, STR-DB1070 Service manual

TABLE OF CONTENTS

SERVICING NOTES

GENERAL

3-1. DISASSEMBLY FLOW

DISASSEMBLY

3-2. CASE

3-3. S-VIDEO BOARD, VIDEO BOARD, TUNER

VIDEO AU board

DIGITAL board

MAIN board

TEST MODE

DIAGRAMS

5-1. BLOCK DIAGRAM – TUNER/VIDEO INPUT Section –

5-2. BLOCK DIAGRAM – AUDIO DSP Section –

5-3. BLOCK DIAGRAM – AUDIO CONTROL Section –

5-4. BLOCK DIAGRAM – POWER AMP Section –

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

5-6. BLOCK DIAGRAM – POWER SUPPLY Section –

5-7. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS