Sony STR-DB1070, STR-DB870 Service Manual

STR-DB870/DB1070

SERVICE MANUAL

Ver 1.0 2001.04

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 –

9-873-842-11 Sony Corporation

2001D0500-1 Home Audio Company C 2000.4 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

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. 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 face 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 V OM (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.

13

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

14

5-2. SCHEMATIC DIAGRAM – DIGITAL Board (1/5) – • See page 38 for Waveforms. • See page 38 for IC Block Diagrams.

*FM/AM TUNER UNIT

0.1 39k

C1405

+5V REGULATOR

C1801

100 16V

0.1

1402 C

C1403

0.1

C1404

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

100 16V

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

330p

1B 2

H6

(AEP,UK)

C1807

220 16V

DIGITAL AUDIO

INTERFACE RECEIVER

LC89056W-E

C1422

100

423

421

1

R

H1

R1422

50V

C1318

10

50V

H5

C1421R1420

0.110k

IC1408

0.1

R1437

220

FB1407

R1424

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 23)

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

IC1402

TORX178

DIGITAL

TORX178

DIGITAL

OPTICAL

TOTX178A

IC1403

IC1404

P1

P2

DB870:CND

10k

R1809

/DB1070

*

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

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

C1428

R1434

100

C1426

47

16V 0.1

COUNTER

IC1409

TC7WH74FU

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 37)

FL1

MD2

MD0

GND

VDD

SIN1

SOT1-5V

7P

1A

(Page 16)

B

2C

3C

4C

5C

6C

8C

7C

C 9

1

2

3

10C

4

11C

(Page 18)

B

5

6

7

8

9

10B

11B

12B

13B

14B

15B

16B

(Page 17) (Page 19)

D

1

2

17B

18B

19B

1515

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

5-3. SCHEMATIC DIAGRAM – DIGITAL Board (2/5) – • See page 38 for Waveform.

(Page 18)

(Page 17)

(Page 15)

(Page 19)

1616

5-4. SCHEMATIC DIAGRAM – DIGITAL Board (3/5) – • See page 38 for Waveform.

STR-DB870/DB1070

(Page 15)

(Page

16)

(Page 18)

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

*

0 (AEP,UK)

2.2k

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)

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

A3

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

10000p

100

0.1

C1711

R1814 R1812

0.1

C1720

0.1

C1

220 220

C12

RESET SIGNAL

GENERATOR

L1

C10

C11

B

7

8

R1815

100

R1751

10k

7 5

JW1103

0

7 1 R

(DB1070)

C8

C9

R1752C1710

10k0.1

R1759

(E2,E3)

(MY,SP,TW,KR,CH)

C1721

0.1

(AEP,UK)

B 1 1

A9

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

B4

B

3

4

5

6

1

C22

C21

C20

C19

C18

C17

C16

C15

C14

C13

C12

C11

C10

C9

C8

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

C7

C6

C5

C4

C3

C2

C1

B

7

8

9

1

+32V

F2

F1

GND

+5V

R1810

+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 33)

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 19)

1717

STR-DB870/DB1070

5-5. SCHEMATIC DIAGRAM – DIGITAL Board (4/5) – • See page 38 for Waveform. • See page 38 for IC Block Diagram.

(Page 15) (Page16)

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 17)

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

27)

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

0.1

J2

1800p

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

J4

C1251

C1252C1262C1261C1271C1272

22

1800p1800p22

50V

R1262 R1251

22k 1.5k

22k

R1252

180p

C1253

C1263

180p

C1254 C1244

22 50V

K6

M5218AFP

R1254 R1244

100k 100k

IC1241

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

19)

4J

5J

6J

7J

8J

9J

1818

5-6. SCHEMATIC DIAGRAM – DIGITAL Board (5/5) – • See page 38 for IC Block Diagrams.

STR-DB870/DB1070

(Page

16)

(Page 17)

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 15)

(Page 18)

C1201

C1202

330

0.1

25V

O2

R1202

100

O3

R1203

100

O4

1J

2J

3J

4J

5J

6J

7J

8J

9J

R1201

100

*

C1811,1815

1000 16V

(DB870/EXCEPT DB1070: AEP, UK)

1000 63V (DB1070:AEP, UK)

D/A CONVERTER

IC1201

PCM1604Y/2K

0.1

C1203

8.2k

R1270

J2

8.2k

R1260

J3

8.2k

R1250

J4

8.2k

C1204

220 16V

FB1202

21A

+5V REGULATOR

IC1806 IC1805

2933 NJM2391-26

C1815

C1811

R1240

J5

*

R1220

R1230

C1211

0.1

C1207

10

50V

8.2k J7

J6

8.2k

D1703

1SS184

Q1813,1814

D POWER

R1807

680

1SR154

SWITCH

Q1813

2SB733

D1803

R1808

10k

RT1N141C

2SD1733

B+ SWITCH

Q1814

Q1810

C1809

IC1808

7805

OGI

+2.5V REGULATOR+3.3V REGULATOR

OGIOGI

470 16V

RT1N141C-T

Q1703-1705

MUTING SWITCH

C1812

R1701

10k

R1798

10k

Q1705

2SC2712-YG

C1702 220p

Q1704

IC1807

7805

OGI

2SC2712-YG

Q1703

+5V REGULATOR

4700

6.3V

Q1811,1812

D POWER

SWITCH

R1797

10k

R1805

R1795

10k

Q1811

2SB733

680

Q1812

RT1N141C

R1806

D14

D13

D12

D11

D10

D9

D8

D7

10k

D6

D5

D4

D3

D2

D1

D.GND

FUNC-LAT

PRE-RY

2ND-RY

REAR-RY

W-FR-RY

SP-FR-RY

HP-CONT

PROTECTOR

AC-MUTE

VOL-LAT

S-MUTE

CN1109

CN1108

CN1102

DATA

SB-RY

HP-RY

CD-RY

3P

-5V

8V

(Page 37)

21P

CLK

C-RY

(Page 29)

GND

-15V

+15V

2P

(Page 29)

1919

STR-DB870/DB1070

5-7. PRINTED WIRING BOARD – DIGITAL Board (Component Side) – • See page 14 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

C1101

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

C1113

R1121

IC1102

C1112

R1124

C1319

C1316

E

R1419

C1420

R1433

R1431

R1424

R1423

C1108

R1308

(AEP, UK)

R1417

R1416

R1420

R1425

IC1408

IC1410

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

IC1241

R1254

R1809

FB1501

R1754

E

Q1814

C1711

R1755

R1751

JW1103

R1767

R1797

Q1705

E

D1801

IC1702

135

4

R1794

(US, CND, E, CH)

(AEP, UK)

Q1812

C1720

R1805

R1806

R1793

R1766

R1765

R1772

R1792

D1802

R1800

R1810

R1768

R1770

R1769

(DB1070)

R1775

R1777

R1776

R1789

D1803

R1788

R1778

R1787

R1786

R1779

R1780

R1781

R1785

R1784

R1783

R1782

1-681-098-

11

(11)

R1774

R1790

R1791

R1750

IC1703

D1702

R1796

E

D1703

R1798

Q1704

A

R1807

R1795

K

R1808

R1701

E

A

R1723

R1203

R1716

R1724

R1202

R1650

R1651

R1725

R1705

R1726

E

Q1804

R1803

R1804

R1739

R1709

R1708

R1710

R1707

R1718

R1740

R1719

D1701

R1717

R1720

R1711

R1715

R1742

R1714

R1721

R1745

(US, CND)

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

2020

5-8. PRINTED WIRING BOARD – DIGITAL Board (Conductor Side) – • See page 14 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 32)

E

DC2

BOARD

CN901

(Page 36)

G

MAIN

BOARD

CN808

(Page 26)

DIGITAL BOARD

31

CN1101

1

CP1103

13

CN1109

12

IC1805

(Page 36)

DC2 BOARD

B

(CONDUCTOR SIDE)

CN903

IC1804

19

30

2

CN1108

C1812

IC1807

Q1810

CN1106

CN1107

17

C1719

FB1703

C1713

C1725

C1723

C1724

B

C

E

3

1

C1727

C1726

C1728 (US, CND, E, CH)

R1773

31

3

JW1101

C1811

1

R1813

C1809

R1752

C1710

C1722

C1718

C1714

R1764

R1760

C1721

IC1806

Q1811

(US, CND, E, CH)

R1761

B

C

E

13

C1712

R1812

C1715

C1716

R1762

R1758

R1756

R1757

(DB1070)

C1702

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 22)

VIDEO BOARD

A

CN303

COAXIAL

*FM/AM TUNER UNIT

*SUPPLIED AS THE

ASSEMBLED BLOCK

• Semiconductor Location

Ref. No. Location

IC1301 C-17

C1310

IC1401

C1411

IC1402

IC1403

IC1404

C1406

C1311

C1402

C1403

C1404

C1405

IC1301

113 3

C1309

FB1401

3

1

3

1

3

1

3

1

R1401

C1427

1-681-098-

C1401

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

R1272

R1273

2

R1271

1

C1503

R1509

C1423

CN1105

C1282

R1282

(DB1070)

C1431

R1280

R1281

C1312

CP1101

C1318

C1425

C1421

C1422

X1501

C1426

C1283 R1283

C1115

(AEP, UK)

C1417

C1419

C1416

C1429

C1430

C1424

FB1102

C1109

C1107

C1131

C1110

C1106

C1412

C1114

C1410

C1102

FB1404

C1104

C1103

C1121

C1418

R1411

C1409

CN1104

DB870: CND/

DB1070

R1512

JW1004

C1613

C1612

JW1005

R1250

C1231

R1231

R1601

C1516

FB1502

R1513

R1240

R1241

R1232

C1234

R1609

FB1602

X1601

C1232

R1233

R1242

C1241

C1244

21

JW1006

C1242

R1243

20

C1517

C1512

C1513

C1515

C1514

C1252

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 26) (Page 26)

D

MAIN BOARD

CN807

2121

STR-DB870/DB1070

5-9. PRINTED WIRING BOARD – VIDEO Board – • See page 14 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 21)

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/

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

IC308

JW320

JW98

8

DB1070

CN301

17

JW124

JW95

JW97

JW96

814

JW94

JW92

JW93

IC304

R317

R319

C320

JW301

14

X301

C316

R327

R324

CT301

(DB1070: AEP, UK, E, CH)

CT302

X302

8

R328

C347

JW84

JW86

DB1070: AEP, UK, E, CH

R318

R332

C323

C322

JW87

3

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

R357

R316

C382

JW317

Q302

R315

R346

E

C379

C305

C318

C348

JW316

7

IC306

R322

3

1

R335

JW119

R336

JW118

JW121

CP301

R325

R313

IC305

C337

R320

JW314

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

C341

R303

R359

R356

FB303

CT303

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

PBB-Y Y PRR-Y PBB-Y Y

C309

R308

JW300

C381

C380

R345

IC309

EE

JW77

Q305 Q304

IC307

C328

CP302

IN

JW60

C313

R309

R306

C308

18

DVD/LD

IN

JW59

R304

R310

R307

C312 C311

R305

IC303

16 9

C361

C355

R330

R329

R353

R350

C329

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 24)

2222

5-10. SCHEMATIC DIAGRAM – VIDEO Board – • See page 38 for Waveforms. • See page 38 for IC Block Diagrams.

R329

10

R330

(DB1070)

10

R333

4.7k

IC307

R328

100

FL302

123

VIDEO 2

VIDEO 1

EXD

XD

VOB

VOC2

VOC1

VOC0

TEST

SCLK

SIN

CS

VOUT

COUT

YOUT

AVSS

C324

0.1

MB90089F-

G-238-BND

EXVSYN

EXHSYN

VSYNC

HSYNC

VBLK

FSCO

AVCC

(DB1070:US,CND)

R332

(CHASSIS)

MONITOR

OUT VIDEO

(CHASSIS)

VSS

XS

EXS

VCC

VIN

CIN

YIN

R334

100

COMPARATOR

IC306

74HC00

100

J303

CONTROL A1 II

TV/SAT

IN VIDEO

DVD/LD

IN VIDEO

(CHASSIS)

CN306

4P

VIDEO

(DB1070:US,CND)

BUFFER

IC305

BA7622F

VCC

CIN

VIN

COUT

YINVOUT

GND

YOUT

C318

1

50V

C315

470 10V

C314

470 10V

1k

320

321

322

R

C325

33p

CT303

20p

C326

18p

C328

0.1

R331

C319

DB1070:AEP,

UK,E,CH

CT301C316

20p10p

X301

17.34MHz

R317

1M

CLOCK

IC304

74HCU04

R318

75 75

FL301

C330

C331

10

50V

0.1

27p

320 C

319

330

R

1k

123

L301

22µH

10 50V

10p

322 C

20p

T302 C

C323

27p

X302JW301

14MHz

R327

330

R324

1M

R323

(DB1070:AEP,UK,E,CH)

C329 100p

OSD DRIVER

123

FL305

Q304

2SC2785

BUFFER

C339

0.1

C340 2200

10V

C341

0.1

C333

0.1

(DB1070:AEP,UK,E,CH)

1

R335

75

2

3

R336

75

C350

0.1

E4

J302

1P

J305

3P

J304

3P

C354

0.1

C336

C337

E5

E6

C351

E7

C352

Q305 R347

2SC2785 3.9k

BUFFER

C375

10

50V

R349

1.2k

R345R343

47k47k

D301

R348

47k

R342C335

C346

50V47p75

C347

10 50V

R344

C348

50V

R346

C349

50V

FL304

123

7547p

10

75

10

75

10

47k

50V

350

10

R

355 C

C2

C1

C4

C3

1SS133T

C332

0.1

FL303

C342R338

47p75

C343R339

47p

47p75

C344R340

47p

C345R341

47p75

2200p

C353

2200p

IC309

LA7213

C359 C370

VIDEO SELECT

IC308

NJM-2296M-

VSYNC

VCC

C361 1000

6.3V0.1 0.1

(DB870)

JW305

C301

470 10V

E2

E3

C302

470 10V

LINE AMP

IC301

OPA2652

C303

470 10V

E1

GND

C4

HSYNC

STR-DB870/DB1070

*

CN301

(US,CND)

19P

(DB1070:AEP,UK,E,CH)

14P

(DB870:AEP,UK)

IC310

FB303

SYNC SEPARATESYNC SEPARATE

IN

C368

1

50V

R352R353

330150k

10 50V

C366

10 50V

C362

C363

10

50V

C3

C2

R326

330

R337

C304

VCC

VSS

C305

33p

R313

330

GND

VSYNC

VCC

C372 1000

R356

6.3V 150k

T

303

S133

D

1S

C358

0.1

C1

330

33p

R314R316R315

22k22k330

HSYNC

LINE AMP

IC302

OPA2652

IC311

IN

LA7213

R355

C376

330

150V

DB1070:AEP,

UK,E,CH

SW4

SW2

SW1

C374

0.1

T

133

304

S

D

1S

C313

10 50V

R359

330

R354

330

C307

VCC

VSS

LEVEL SHIFT

IC312

74ACT08

33p

k 22

358 R

LEVEL SHIFT

0.1

9 37

C

0.1

2 38

C

A3

A1

10

50V

D4

74ACT08

C377

0.1

C367 C360

0.1 0.1

C312C309 C308 C311

10

50V

50V1050V

D1

D3

D2

A2

A4

75

351 R

SW3

C373

0.1

C364

0.1

C378

0.1

C381

0.1

VIDEO SELECT

TC74HC4053AF

R357

100

IC303

R325

10k

Q302

BA1A4M

INVERTER

10P

DB870:CND

/DB1070

SW4

SW3

SW2

47p

SW1

369 C

A4

A3

A2

A1

C365

0.1

C380

0.1

B1

B2

B3

B4

B5

DB870:CND

/DB1070

*

CN303

21P

(US,CND)

15P

(DB1070:AEP,UK,E,CH)

11P

(DB870:AEP,UK)

(US,CND)

MBUS-STATUS-OUT

C310

10

50V

D1

D2

D3

D4

E1

E2

E3

SIRCS OUT

MONITOR-Y/OUT

MONITOR-C/OUT

MONITOR-Y/IN

MONITOR-C/IN

+5V(BACK UP)

(US,CND)

B1

B2

B3

B4

B5

+5V(B_UP)

R312

1k

MBUS-TV

MBUS-DVD

MBUS-V1

MBUS_OUT

MBUS_TV

MBUS_DVD

MBUS_V1

OSD_DATA

OSD_CLK

CTRL A1

R305

75

R307

R310

R304

R306

R309

R308

R311

VIDEO3

OSD_CS

V-SYNC

GND_A1

R302

R303

CN303

SIRCS

V_SW1

V_SW2

V SW3

V SW4

75

CN301

*

S-VIDEO

SW4

SW3

SW2

SW1

GND

+5V

-5V

P/N

*

BOARD CN751

(Page 25)

(Page 15)

-5V

+5V

GND

CN302

2P

J301

9P

Y

PBB-Y

DVD/LD

PRR-Y

Y

PBB-Y

TV/SAT

PRR-Y

R301

75

1k

75

1k

75

Y

MONITOR

PBB-Y

OUT

PRR-Y

(US,CND)

IN

COMPONENT

IN

VIDEO

2323

STR-DB870/DB1070

5-11. PRINTED WIRING BOARDS – S-VIDEO/VIDEO AU Boards – • See page 14 for Circuit Boards Location.

1 2 3 4 5 6 7 8 9 10

S-VIDEO BOARD

MONITOR TU/SAT DVD/LD VIDEO 1

A

B

J753

CTRL S

IN

R750

(US, CND)

R762R763

C

D

J751

S-VIDEO

OUT

C761

C751 C750

(DB870)

R767

R766

Q752

E

R773

R768

Q753

IC751

R769

E

J754

CTRL S

STATUS IN

R751

C765

C768

Q751

C766

JW709

JW710

JW42

JW43

(DB870: CND/DB1070)

(US, CND)

169

18

R765

E

R764

(US, CND)

R774

JW712

Q750

R755

JW711

E

CN751

S-VIDEO

IN

C755

(DB870)

JW750

H

VIDEO BOARD

CN301

(Page 22)

C758

JW34

JW33

JW706

JW751

J750

R757R754 R756

C756

JW36

JW35

JW705

JW707

JW708

(US, CND)

S-VIDEO

IN

C759

C772

R771

JW703

JW704

C770

JW702

C754

JW701

9

JW700

J755

CTRL S

OUT

R772

(US, CND)

JW27

JW71

IC752

JW70

R752

JW25

JW26

JW28

4

J

VIDEO 3 BOARD

CN299

(Page 34)

1

CTRL S

(US, CND)

R760

JW24

CN753

J756

OUT

16

JW23

R753

JW18

C769

18

R770

C767

R761

C762

C764

J752

S-VIDEO

OUT

C753

C752

JW16

JW17

9

R759

JW15

S-VIDEO

C757

16

IN

R758

C760

IC750

C763

D750

D751

18

JW19

1-681-195-

11

(11)

JW20JW22

JW21

VIDEO AU BOARD

TV/SAT

AUDIO IN

R L

C201

R201

R251

JW58

C211

28 1

JW57

IC201

C213

15 14

JW52

JW51

R211

CN201

DVD/LD

AUDIO IN

R L R L

R252

R202

JW55

JW56

JW49

JW48

JW47

JW46

AUDIO OUT

R253

JW54

C212

JW50

JW53

1

3

R203

CN202

VIDEO 2

R254

AUDIO IN

R L

R204

K

VIDEO 3

BOARD

CN299

(Page 34)

AUDIO OUT

R255

J202J201

R L

R205

VIDEO 1

R256

AUDIO IN

R L

R206

1-681-096-

11

(11)

E

L

MAIN BOARD CN101

(Page 26)

• Semiconductor Location

Ref. No. Location

D750 C-5 D751 C-5

IC201 C-7 IC750 C-5 IC751 C-2 IC752 C-4

Q750 C-2 Q751 C-2 Q752 C-1 Q753 C-2

2424

5-12. SCHEMATIC DIAGRAM – S-VIDEO/VIDEO AU Boards – • See page 38 for IC Block Diagrams.

C768 470p

C765

JW751

JW750

470p

NC

IN1

GND

INH2

INH1

IN3

IN4

OUT1

VCC

O2-3

O2-2

O2-1

O3-3

O3-2

O3-1

IN2

6.8k

R766

6.8k

R768

10k

R769

Q752,753

Q752

BN1A4M

Q753

R774

100

R773R767

10k10k

BN1A4M

C770

10

50V

C772

0.1

R771R770

7575

Y SWITCHC SWITCH

IC752IC750

NJM-2296D-NJM-2296D-

D750

1SS133T

C769

0.1

J750

J752

VIDEO 1

(US,CND)

J753

MONITOR

CTRL S

J754

TV/SAT

CTRL S

STATUS IN

DVD/LD

CTRL S

VIDEO 1

CTRL S

OUT

MONITOR

S-VIDEO

TV/SAT

S-VIDEO

DVD/LD

S-VIDEO

OUT

S-VIDEO

IN

R750

2200p

1k

R751

1k

CONTROL S

R752

1k

R753

1k

R772

100

Q750

BA1A4M

C761

R762

75

C750

47p

(DB870)

C751

47p

R763

75

C758

10

50V

75

C755

75

0.1

C759

10

75

50V

75

C756

0.1

R760

47p

75

R761

75

C760

10

50V

C757

0.1

2200p

R754

R755

R756

R757

C754

C762

C752

C753

R758

R759

I/O SWITCH

IC751

NJM-2145D-

Q750,751

BUFFER BUFFER

Q751

BN1A4M

R764

4.7k

C766

R765

47

10k

16V

(DB870)

C764

0.1

C767 C763

0.1 0.1

IN

J755

OUT

J756

(CHASSIS)

J751

Y

OUT

C

Y

IN

C

Y

IN

C

(CHASSIS)

Y

C

Y

C

STR-DB870/DB1070

CN751

*

(US,CND)

19P

(DB1070:AEP,UK,E,CH)

14P

(DB870:AEP,UK)

10P

(US,CND)

DB870:CND

/DB1070

D751

1SS133T

MBUS-STATUS-OUT

MBUS-TV

MBUS-DVD

MBUS-V1

SIRCS OUT

MONITOR-Y/OUT

MONITOR-C/OUT

MONITOR-Y/IN

MONITOR-C/IN

+5V(BACK UP)

VIDEO3(C)

VIDEO3(Y)

VIDEO3

CN751

*

SW4

SW3

SW2

SW1

GND

+5V

-5V

CN753

4P

(Page 23)

(Page 35)

AUDIO OUT

VIDEO 2

AUDIO OUT

VIDEO 1

TV/SAT

AUDIO IN

DVD/LD

AUDIO IN

G1

C201

(CHASSIS)

J201

6P

L

R

L

R

L

R

J202

6P

L

R

L

R

L

R

(CHASSIS)

2200p

R201

1k

A1

A2

R251

1k

R202

1k

A3

A4

R252

1k

R203

2.2k A5

R204

R254

R206

2200p

A6

2.2k

1k

A7

A8

1k

A9

2.2k

A10

2.2k

A11

1k

A12

R256

1k

C202

VIDEO

SELECT

IC201

TC9273-014

R253

R205

R255

G2

2200p

1

3

5

7

9

V2 OUT

1

A

1 A

2

1

T

O

M

NC

CO

V1 OU

VIDEO

VIDE

0

2

8

1

A

L

S

VDD

D/LD V

V/DB T

D

R

VSS

C212

2

4

6

A

C213C211 100p2200p

VIDEO3

CN201

9P

LOUT

GND

ROUT

15V

-15V

LAT

DATA

CN202

(Page 29)

CLK

3P

L

R

R211

1k

AT L

DAT

3

M

C N

IDEO

CO

V

ND

LK

G

C

(Page 35)

2525

STR-DB870/DB1070

5-13. PRINTED WIRING BOARD – MAIN Board – • See page 14 for Circuit Boards Location.

• Semiconductor Location

Ref. No. Location

D301 C-10 D801 F-11 D802 E-3 D803 E-3 D809 D-11 D810 F-11 D811 D-11 D813 D-4 D814 E-9 D815 G-12 D816 F-9

IC101 C-4 IC102 D-7 IC103 C-10 IC104 C-6 IC105 D-9 IC401 G-5 IC402 F-5 IC403 I-7 IC501 G-4 IC502 F-4 IC503 I-4 IC601 G-7 IC602 F-7 IC603 I-11 IC701 G-8 IC702 F-8 IC801 E-13 IC802 E-12 IC804 G-3 IC805 H-3

Q301 C-10 Q401 D-3 Q402 J-8 Q403 J-9 Q451 C-2 Q452 J-6 Q453 J-7 Q501 C-2 Q502 J-3 Q503 J-4 Q551 D-3 Q552 J-4 Q553 J-5 Q601 B-2 Q602 J-10 Q603 J-11 Q651 D-2 Q652 J-12 Q653 J-12 Q701 C-2 Q806 H-12 Q807 C-11 Q808 F-11 Q809 D-11 Q810 H-2 Q811 H-3 Q812 H-3 Q813 C-2 Q815 D-5 Q823 E-8 Q824 F-12 Q825 F-9 Q826 F-11

A

B

C

D

E

F

G

H

I

J

1 2 3 4 5 6 7 8 9 10 11 12 13

OUT

R L

JW163

JW169

1

4

JW319

1

10

JW334

JW336

JW338

15

J302

MD/TAPE

(DB870)

MD/DAT

(DB1070)

R L

R176

C651

R460

14

R177

C136

R126

JW161

JW162

JW160

JWH110

C129

JW167

JW168

JW177

JW178

JW175

JW179

JW180

JW181

JW182

C652

R653

JW183

JW318

C667

R652

JW330

JW331

JW332

C455

R458

C454 C404

C459

R459

C460

IC403

C456

JW383 JW382

JW384

IN

JW328

JW159

JW400

CP802

(DB1070)

R702

JW333

R412

C128

JW317

C718

C702

R703

JW329

C417

JW154

C701

R408

C704

R704

R127

JW147

JW153

JW158

CN801

R409

C410

C411

R847

8

5

JW316

20

11

C405

R L

JW151

JW152

JW157

IC702

IC701

C409

2

OUT

R178

JW146

15

JW313

JW314

JWH120

R410

1

C406

Q402

JW150

JW156

JW312

R407

J303

TAPE

R L

C137

R128

R179

JW145

JW143

JW144

JW148

C127

JW149

1

JW137

28

C126

JW155

JW142

R825

Q823

E

R848

R824

R846

1

R841

4

JW315

1

10

(DB1070)

C414

R417

C408

R411

CN400 CN600

R413

IN

C173

IC105

JW135

JW141

C407

L401

C412

R180

JW136

R852

2ND ROOM OUT

JW132

R129

R181

–2 –1

R182

JW133

JW134

JW140

RY806

–1

–2

D816

–2 –1

RY807

JW307

JW308

JW309

R423

C620

C614

JW381

Q403

R L

C125

JW302

JW304

RY301

14

R113

E

JW303

(DB1070)

R L

+

C557

JW131

JWH102

R130

D301

R337

R131

C123

R132

C134

45

C175

C174

IC103

1

R134

C124

R184

(DB1070)

JW130

JW129

JW128

CN803

14

JW278

C703

JW701

(DB870)

JW301

JWH117

JWH118

JW305

R623

R611

JW310

C608

IC603

JW311

R612

JW379

C611

Q602

Q825

R854

R617

R183

15

JW139

R853

JW306

CP502

JW380

138 JW

R849

L601

D814

SURROUND

– –

Q301

R336

JW122

R133

8

JW127

JW126

JW276

JW277

CN805

JW300

15

R613

+

C507

E

R315

JWH105

JW121

JW120

R812

CP803

JW123

R820

–2 –1 –2 –1

R813

1

Q808

R859

E

R610

Q826

JWH119

JW297

JW298

R609

R608

C605

C617

C609

R614R414R464

JW702

C606

C612

C610

C604

C654

C656

Q603

11

JW299

14

TM501

SPEAKERS

IMPEDANCE USE 4-16Ω

JWH104

R816

Q807

R814

E

R818

Q809

JW119

R822

D811D809

RY803RY801

12

CN503

12

R817

D810

R860

D801

R658

R659

C655

JW705

R660

C660

(DB870)

2

JW707

R662

JW377

JW378

C661

(DB1070)

SURROUND

CENTER

+

C607

JW117

JW118

JWH103

GP801

E

JWH107

JW393

JW124

JW125

JW394

JWH116

JW288

JW289

JW293

JW290

JW291

JW292

CN809

JW295

JW294

JW296

JWH115

C659

R607

C658

JW706

R661

1

CN650

17

R664

R663

(DB1070)

JW376

BACK

– –

(DB1070)

JW395

JW399

JW398

JW116

JWH106

JW114

C804

3

1

C803

IC802

C801

C802

JW287

C815

D815

16

C809

R811

C810

R810

C668

C664

L651

R673

(DB1070)

C662

JW375

Q652

JW113

R809

+

JWH101

JW397

JW115

Q824

E

R851

2

Q806

R667

JW373

C657

CN804

IC801

C814

R835

Q653

(DB1070)

RY805

–1

–2

(Page 21)

(Page 24)

(Page 21)

D

DIGITAL

BOARD

CN1103

L

VIDEO AU

BOARD CN201

G

DIGITAL

BOARD

CN1109

F

DIGITAL

BOARD

CN1102

MAIN BOARD

FRONT

R L

R102

C102

Q601

R601

R501

R701

R833

R451

E

Q813

R826

CN807

1

21

JW275

CN806

1

21

JW367

C520

R101

C101

E

Q501

(DB1070)

Q701

Q451

2

JW235

JW236

R651

20

R856

2

IC804

20

JW362

R850

JW359

IC805

JW366

R815

E

Q810

C514

R517

R512

BIAS BOARD

N

(Page 30)

J305

MULTI CH IN

(DB870)

MULTI CH IN 2

(DB1070)

SURROUND

R L

C107

E

Q651

JW274

JW273

JW272

R523

CN501

7

1

7

1

SUB

WOOFER

R104

C104

C103

R106

R103

JW222

JW223

JW224

JW225

JW226

C133

JW227

JW228

JW229

JW230

Q401

E

JW271

R855

C816

CN500

JW220

JW219

JW231

Q551

E

JW234

R551

R401

JW247

JW248

D802

D803

JW265

JWH114

JW267

JW270

JW266

JW268

JW269

8

JW358

CP801

JW357

JW360

14

JW363

JW361

8

JW364

JW365

JW368

14

R864

1

CN502

L501

JW372

17

R514

JW391

C511

Q502

BCE BCE BCE BC E BCE BCE BCE BCE BCE BC E BCE BC E

CENTER

C106

JW221

JW233

JW264

CN808

2

1

C518

Q812

JW176

Q811

C558

R561

R513

JW218

JW232

JW246

JW356

C105

R135

JW263

JW262

R105

JW801

JW261

C817

E

C811

E

JW217

C818

R502

JW355

JW370

JW371

C512

(DB1070)

RY805

JW260

JW369

FRONT

R L

R152

JW216

JW259

JW258

C819

C502

R503

C501

C519

JW354

R504

R560

15

14

(DB870)

(DB1070)

11

C559

C556

Q503

JW802

8

5

20

R559

JW390

JW202

IC502

IC501

JW353

C555

C560

JW389

R151

IC101

JW208

JW215

JW245

(DB1070)

R558

C554

MULTI CH IN 1

J304

SURROUND

BACK

R L

C177

JW201

D813

JW352

JW351

C517

R562

R154

JW214

JW244

1

4

1

10

JW256

JW350

C504

C551

C552

JW257

JW327

JW200

JW243

JWH112

R553

C567

R508

C510

CENTER

R156

R153

JW203

JW213

JW212

JW242

JW255

JW326

R552

JW349

C505

R509

R510

IC503

2

C506

JW388

C561 C562 C461

R155

JWH111

JW197

JW198

JW199

JW241

JW254

1

C131

AEP, UK,

E, CH

JW204

JW205

JW206

JW207

JW209

JW210

C132

JW211

C138

JW239

JW238

JW240

JW252

JW251

JW253

C813

C812

C452

R453

JW325

JW324

C467

C451

R452

JW347

C420

11

JW348

R404

R507

C564

C509

C508

R511

17

CN550

R564

R563

JW237

8

5

20

CP501

R567

CN552

J307

SUB

WOOFER

R157

JW

C161

C163

C164

(DB1070)

Q815

JW250

IC402

IC401

JW346

R573

JW386

R172

E

H

JW249

JW344

2

AEP, UK,

E, CH

109

R168

R169

R170

R832

(DB1070)

JW343

L551

Q553Q552

C159

R166

C160

C162

R171

R831

JWH113

JW345

C568

JW387

4

1

C165

JW191

1

4

1

10

R462

CND

R165

US,

R167

R402

C401

J301

PHONO IN

R L

IC104

JW190

C402

R403

JW196

JW323

C419

JW342

C464

C158

R116

R117

C115

R123R173

JW171

JW189

JW341

C457

CD/SACD IN

R L

AEP, UK,

E, CH

US,

CND

R115

C109

C108

R175

R125

JWH108

C111

R118

C110

AEP, UK,

5

R121

CN101

JW187

JW188

JW193

JW322

C821

R467

E, CH

R119

C112

8

R122

JW192

JW321

C618

R602

R473

L451

17 1717

JW385

JW164

C113

C130

R114

C114

R120

15 28

JW165

IC102

JW166

14 1

JW170

JW174

JW173

JW172

JW186

JW185

JW184

R830

(DB1070)

IC602

JW194

JW195

8

C602

R603

5

JW320

20

IC601

C601

C619

JW340

11

JW335

R604

JW337

C458

R461

JW339

CN450

R463

Q452 Q453

C462

7

1

3

1

R808

E

JW374

JW285

1

CN802

4

JW282

JW286

1-618-114-

JW110

JW112

JW280

U

DC1 BOARD

CN910

(Page 36)

JW109

V

DC2 BOARD

CN902

(Page 36)

JW111

T

SP BOARD

CN403

(Page 34)

JW279

JW281

W

BIAS BOARD

CN810

(Page 30)

JW283

I

SP BOARD

CN502

(Page 34)

JW284

R

BIAS BOARD CN651

(Page 30)

11

(11)

M

BIAS BOARD

CN551

O

BIAS BOARD

CN451

P

BIAS BOARD

CN401

(Page 30) (Page 30) (Page 30)

2626

H. P BOARD

S

CN749

(Page 34)

BIAS BOARD

Q

CN601

(Page 30)

Sony STR-DB1070, STR-DB870 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. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS