Sony STR-K870P Service Manual

STR-K870P

SERVICE MANUAL

Ver. 1.0 2005.02

• STR-K870P is the tuner and the amplifier section in HT-DDW870.

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.

SPECIFICATIONS

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

(Models of area code US only)

With 6 ohm loads, both channels driven, from 120 – 20,000 Hz; rated 60 watts per channel minimum RMS power, with no more than 0.7% total harmonic distortion from 250 milliwatts to rated output.

Amplifier section

Power Output Models of area code US, CND (6 ohms 1 kHz, THD 0.7%) FRONT CENTER SURR SURR BACK

(6 ohms 1 kHz, THD 10%) FRONT CENTER SURR SURR BACK

1)

2)

: 60 W/ch

2)

: 60 W

2)

: 60 W/ch

2)

: 60 W

2)

: 100 W/ch

2)

: 100 W

2)

: 100 W/ch

2)

: 100 W

Models of area code AEP, UK, SP, E51, MX (6 ohms 1 kHz, THD 0.7%)

2)

: 60 W/ch

FRONT

2)

CENTER SURR SURR BACK

(6 ohms 1 kHz, THD 10%) FRONT CENTER SURR SURR BACK

Models of area code AUS (6 ohms 120 Hz – 20 kHz, THD 0.09%) FRONT CENTER SURR SURR BACK

(6 ohms 1 kHz, THD 0.7%) FRONT CENTER SURR SURR BACK

(6 ohms 1 kHz, THD 10%) FRONT CENTER SURR SURR BACK

: 60 W

2)

: 60 W/ch

2)

: 60 W

2)

: 100 W/ch

2)

: 100 W

2)

: 100 W/ch

2)

: 100 W

2)

: 50 W/ch

2)

: 50 W

2)

: 50 W/ch

2)

: 50 W

2)

: 60 W/ch

2)

: 60 W

2)

: 60 W/ch

2)

: 60 W

2)

: 100 W/ch

2)

: 100 W

2)

: 100 W/ch

2)

: 100 W

– Continued on next page –

9-879-448-01

FM STEREO FM-AM RECEIVER

Sony Corporation

Audio Group Published by Sony Engineering Corporation

STR-K870P

1) Measured under the following conditions:

Area code Power requirements

US, CND 120 V AC, 60 Hz MX 127 V AC, 60 Hz AEP, UK, SP 230 V AC, 50 Hz AUS, E51 240 V AC, 50 Hz

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

Inputs (Analog) SA-CD/CD, MD/TAPE,

DVD, VIDEO 1, 2, 3

Inputs (Digital) DVD (Coaxial) Sensitivity: –

VIDEO 2, SA-CD/CD (Optical)

Outputs (Analog) MD/TAPE (OUT),

VIDEO 1 (AUDIO OUT) SUB WOOFER Voltage: 2 V

Reproduction frequency range:

Tone Gain levels ±6 dB, 1 dB step

Sensitivity: 800 mV Impedance: 50 k ohms

Impedance: 75 ohms Sensitivity: –

Impedance: –

Voltage: 800 mV Impedance: 10 k ohms

Impedance: 1 k ohm

28 – 20,000 Hz

Video section

Inputs/Outputs Video: 1 Vp-p, 75 ohms

General

Power requirements

Area code Power requirements

US, CND 120 V AC, 60 Hz MX 1227 V AC, 60 Hz AEP, UK 30 V AC, 50/60 Hz AUS 240 V AC, 50 Hz SP 220 – 230 V AC,

E51 120/220/240 V AC,

Power consumption

Area code Power consumption

US 170 W CND 230 VA AEP, UK, AUS, SP, MX,

E51

Power consumption (during standby mode)

Dimensions (w/h/d) (Approx.)

Mass (Approx.) 8.0 kg (17 lb 11 oz)

50/60 Hz

190 W

0.2 W

430 × 157.5 × 310 mm (17 × 6 1/4 × 12 1/4 inches) including projecting parts and controls

FM tuner section

Tuning range 87.5 - 108.0 MHz Antenna FM wire antenna Antenna terminals 75 ohms, unbalanced Intermediate frequency 10.7 MHz

AM tuner section

Tuning range Models of area code US, CND With 10-kHz tuning scale: 530 - 1,710 kHz With 9-kHz tuning scale: 531 - 1,710 kHz Models of area code AEP, UK, SP, AUS With 9-kHz tuning scale: 531 – 1,602 kHz Models of area code E51 With 10-kHz tuning scale: 530 - 1,610 kHz With 9-kHz tuning scale: 531 - 1,602 kHz Models of area code MX With 10-kHz tuning scale: 530 - 1,610 kHz Antenna Loop antenna Intermediate frequency 450 kHz

3) You can change the AM tuning scale to 9 kHz or 10 kHz. After tuning in any AM station, turn off the receiver. While holding down PRESET TUNING + or TUNING +, 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.

3)

• Abbrevia tion AUS : Australian model CND : Canadian model E51 : Chilean and Peruvian models MX : Mexican model SP : Singapore model

Design and specifications are subject to change without notice

2

STR-K870P

r

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. Follow the manufactur ers’ instructions to use these instruments.

2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC v oltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate lo w-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A)

To Exposed Metal Parts on Set

Notes on chip component replacement

• Never reuse a disconnected chip component.

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

damaged by heat.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the leadfree mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40 °C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 °C. Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

• Strong viscosity Unleaded solder is more viscou-s (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc.

• Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.

AC

0.15 µF

1.5 k

Ω

Earth Ground

voltmete (0.75 V)

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

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

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

3

STR-K870P

• Procedure: While depressing the FM MODE and the DISPLA Y buttons simultaneously, press the power ?/1 button to turn on the main power. The message “FACTORY” appears and switch off the set. While depressing the FM MODE and the DISPLA Y buttons simultaneously, press the power ?/1 button again. The message “FACTORY” appears and the present contents are reset to the default values.

AM CHANNEL STEP 9 kHz/10 kHz SELECTION MODE

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

• Procedure: Set the FUNCTION to AM. Turn off the main power. While depressing the TUNING+ button or the PRESET TUNING+ button, press the power ?/1 button to turn on the main power. Either the message “9 k STEP” or “10 k STEP” appears. Select the desired step. This mode is only for US, Canadian, Australian and E models.

FLUORESCENT INDICATOR TUBE TEST MODE

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

• Procedure: While depressing the TUNING– and the SPEAKERS (OFF/ A/B/A+B) buttons simultaneously, press the power ?/1 button to turn on the main power.

1. All segments turn on.

MHz

kHz mft.

MEMORY

DIRECT

dB

MEMORY

DIRECT

dB

MEMORY

DIRECT

SP A

D

LFE

SW

CR

L

SL S SR

SBL SB SBR

D

SP B SLEEP OPT COAX MULTI CH IN 96/24

D

DIGITALEX PRO LOGIC II x DTS-ES NEO:6 MPEG-2 AAC RDS

D.RANGE EQ STEREO MONO

2. Press the VIDEO 1 button, confirm display.

SP A

D

LFE

LSWR

S

SB

D

SP B SLEEP OPT COAX MULTI CH IN 96/24

D

DIGITALEX PRO LOGIC II x DTS-ES NEO:6 MPEG-2 AAC RDS

D.RANGE EQ STEREO MONO

3. Press the VIDEO 1 button, confirm display

SP A

D

DIGITALEX PRO LOGIC II x DTS-ES NEO:6 MPEG-2 AAC RDS

D.RANGE EQ STEREO MONO

C

SL SR

SBL SBR

D

SP B SLEEP OPT COAX MULTI CH IN 96/24

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

5. Every pressing of the VIDEO 1 button turns on each segment one after another in the same order. (Not only the VIDEO 1 button, but also the other buttons such as VIDEO 2 , VIDEO 3 , D VD , MD/TAPE , SA-CD/ CD , FM and AM can be used.)

SOUND FIELD CLEAR MODE

•The preset sound field is cleared when this mode is activa ted. Use this mode before returning the product to clients upon completion of repair.

• Procedure: While depressing the 2CH button, press the power ?/1 button to turn on the main power. The message “SF. CLR.” appears and initialization is performed.

SOFTWARE VERSION DISPLAY MODE

•The software version is displayed.

• Procedure: While depressing the TUNING– and the DISPLAY buttons simultaneously, press the power ?/1 button to turn on the main power. The model name, destination and the software version are displayed.

KEY CHECK MODE

• Button check

• Procedure: While depressing the TUNING– and the MAIN MENU buttons simultaneously, press the power ?/1 button to turn on the main power. “REST 30” appears. Every pressing of any button other than ?/1 counts down the buttons. The buttons which are already counted once are not counted again. When all buttons are pressed “REST 00” appears. When MASTER V OLUME is rotated in clockwise direction, “VOL MIN”, “VOL 1” to “VOL 69”, “VOL MAX” appear.

AUTO BETICAL MODE

•This mode is installed in the Europe models only. When this mode is used, the receiver scans the broadcasts that can be received by the tuner, and sets up the broadcasts. Be sure to start scanning after connecting the antenna.

• Procedure:

1. Check that the antenna is connected.

2. Press the ?/1 button to turn on the power while pressing the MEMORY button.

CHANGE COMMON MODE

•This mode is command mode changed to AV 1 or AV2.

• Procedure: While depressing the ENTER button, press the power ?/1 button to turn on the main power. Either the message “C.MODE.AV 1” or “C.MODE.AV 2” appears.

SHIPMENT MODE

• All preset contents are reset to the default setting.

• Procedure: While depressing the SPEAKERS (OFF/A/B/A+B) and the FM buttons simultaneously, press the power ?/1 button to turn on the main power. “CLEARED” appears.

11

STR-K870P

• Circuit Boards Location

POWER board

TUNING board

AC SELECT board (E51 model only)

STANDBY board

SECTION 3

DIAGRAMS

SPEAKER B (P) board

SPEAKER C/SB board

VIDEO board

DIGITAL board

HEADPHONE board

VIDEO3 board

DISPLAY board

MAIN board

12

STR-K870P

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

For Schematic Diagrams. Note:

• All capacitors are in µF unless otherwise noted. (p: pF) 50 WV or less are not indicated except f or electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

• % : indicates tolerance.

• f : internal component.

• 2 : nonflammable resistor.

• 5 : fusible 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 wavef orms are dc with respect to ground under no-signal (detuned) conditions. No mark : FM

•Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances.

•Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

F : FM J : ANALOG c : DIGITAL I : VIDEO

•Abbreviation AUS: Australian model CND : Canadian model E51 : Chilean and Peruvian models MX : Mexican model SP : Singapore models

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 piéce portant le numéro spécifié.

For Printed Wiring Boards. Note:

• X : parts extracted from the component side.

• a: Through hole.

• f : internal component.

• : Pattern from the side which enables seeing.

• Indication of transistor.

C Q

B

E

B

CE

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

These are omitted.

•Waveforms – DIGITAL Board –

1

IC1501 9 (MCLK1)

MEMO

72 ns

1 V/DIV, 40 ns/DIV

2

IC1101 id (X1)

41.6 µs

1 V/DIV, 20 ns/DIV

3

IC1301 ws (XIN)

81 ns

1 V/DIV, 40 ns/DIV

3.4 Vp-p

4.2 Vp-p

4.4 Vp-p

STR-K870P

1313

STR-K870P

3-1. BLOCK DIAGRAM – MAIN SECTION –

TN1

AEP, UK

TUNER PACK

FM

AM

FM SIGOUT

L CH

R CH

ST-DO

ST-DI

CLK

CE

STEREO

TUNED

MUTING

EXCEPT AEP, UK

RDS DATA

RDS INT

FM

75 Ω

COAXIAL

AM

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

• Signal Path

: FM

: ANALOG

: DIGITAL

: VIDEO

R-CH TUNER +10V10V

TUNER +3.3V3.3V

IC1101(1/3)

SYSTEM CONTROL.

73

DO

17

TUNER-DATA

16

T.SERIAL CLK

74

SLATCH

76

STEREO

75

TUNED

78

MUTE

53

RDS DATA

52

RDS CLK

43

RDS SIG

VIDEO 1

DIGITAL

J201 (1/2)

VIDEO IN

J200 (1/2)

VIDEO INVIDEO 2

VIDEO INDVD

VIDEO 1

VIDEO 2

COAXIAL

OPTICAL

SA-CD/CD

DVD

MD/TAPE

J404 (1/2) AUDIO IN

AUDIO IN

AUDIO INVIDEO 3

DVD

IN

VIDEO 2

IN

SA-CD/

CD IN

J402

J403 (1/2)

IC401

ANALOG SOUND

PROCESSOR

38

INIR

44

BOUTAL

IN

J298

IC1401

J1301

IC1351

OPTICAL

IN

IC1354

OPTICAL

IN

93

XSTATE

13

XMODE

5

3

CKSEL1

V1

V2

DVD

DIGITAL AUDIO

5

DIN2

3

DIN0

4

DINI

35

DO

36

DI

38

CLK

37

CE

34

ERROR

17

XSTATE

48

XMODE

47

CKSEL1

SW4

89

6

SW4

IC1303

35

62

98 97 95 96 99 100 94 1

DI

CE

DO

CLK

ERROR

IC1301

I/F RECEIVER

CK OUT

DATAO

XIN XOUT

22 21

X1301

12.288MHz

86

14

SW1 SW1

VIDEO AMP

XMCK

LRCK

AUDIO

IC203

16 13 14

14 20 19LRCKO

18SDI1

23 24 25 26

9

12

IC1101(2/3)

SYSTEM CONTROL

15

IC1502

SRAM

X1502

13.9MHz

20

IC1501

AUDIO DSP

22

13

BCK

14 15

16

D1101

24

92

DATA0

SW3

88

87

4

10

SW3

SW2 SW2

2

BST SEL

M.OUT

V.OUT

VCC

VEE

18

GP9

19

HD OUT

1

15

16

14

6

20

HD IN

IC1503

SELECTOR

SB

AY

1 5

4

5

7PM3

HCS

HCLK

HACN

2

+5V REG

-5V REG

IC807

IC804

6

BST

XRST

SCK OUT

KFSI0

29

BCKO

BCKI2

28

LRCKI2

17

BCKII

15

LRCKII

SDO1

60

SDI2

SDO2 SDO3

19

LRCK0

SDO4

69

GP8

68

GP9

35

HD OUT

33

HD IN

34

HCLK

36

HCS

32

HACN PM

113 56

MCLK1

BST

2

XRST

MCLK2

59

EXLOCK

+ V

- V

SYSCLK LRCK BCK DOUT

LIN

RST

9

RST(800)

J201 (2/2)

VIDEO OUT

J200 (2/2)

VIDEO OUT

AD CONVERTER

1

6

10

12MC13MC14

RST(680)

MDI

MONITOR

VIDEO 1

IC1452

AUDIO CODEC

VOUT5

VOUT1

38

MCLKI

40

VOUT3

BCK

41

LRCK

VOUT4

VOUT7

47

DATA3

45

DATA1

46

DATA2 DATA4

31

37

RST

36

ML

35

MC

34

MDI

33

MDO

15

MDO

IC1403 31

10

IC1405 57

14

IC1404 31

12

IC1404 57

11

IC1406 57

16

27

28

VOL DATA LATCH

VOL_CLK

34

INGL

ROUTBL

46

24

INBL

26

INCL

30

INEL

32

INFL

28

INDL

41

AOUTL

49

INCL

52

INCSL

51

INCC

56

INCSW

54

INCSB

60

DATA

59

CLK

OUT L

OUT SL

OUTC

OUTSBL

OUT SW

IC1131

EEPROM

SDA SCL

5 6

29 30

SDA

88

85

86

83

81

Q560

RELAY DRIVE

70

SCL

SW RY

RY560

J404 (2/2)

AUDIO OUT

J402 (2/2)

OUT

5

7

MD/TAPE

L

SL

C

SBL

IC402

WOOFER AMP

J309

SUB WOOFER

AUDIO OUT

VIDEO 1

A

DISPLAY /POWER SECTION

STR-K870P

1414

3-2. BLOCK DIAGRAM – DISPLAY/POWER SECTION –

STR-K870P

• R-CH is omitted due to same as L-CH

• Signal Path

FL101

FLUORESCENT

INDICATOR TUBE

F1 F2

14 29

42 31

SEG1-16

GRID1-12

DIN8CLK9STB

7

IC101

BUFFER

59

60

57

FL_LAT

FL_CLK

FL_DATA

X1

X0

82 83

X1101

24MHz

: FM

IC100

FL DRIVE

SW1 SW2 SW3 SW4

FUNCTION

S140-143, S148-153

R-CH

IC701

POWER AMP

+V OUT2

12

Q701,702

LIMITER

L

MAIN

SECTION

A/D0

D101-104

A/D1

39

FUNCTION

KEY

S100-108, S110

1 2 3 4

38

KEY

A

A/D2

40

FUNCTION

KEY

S120-125, S128-130

SLSL

C

SBL

8

NF2

IN2

-V OUT2

IC601

POWER AMP

+V OUT2

NF2

IN2

8

-V OUT2

POWER AMP

IC501

+V OUT2

8

NF2

IN2

+V OUT1

NF1

6

IN1

62

HP RY

SYSTEM CONTROL

IC1101(3/3)

9

11

12

9

11

12

9

11-V OUT2

2

5

3-V OUT1

66

FRONT RY

Q651,652

LIMITER

Q501,502

LIMITER

Q571,572

LIMITER

69

REAR RY

VOL_ENC(B)46VOL_ENC(A)

45

3 1

ENCODER

RV102

MASTER VOLUME

68

C/SB RY

Q703

BOOSTER

Q704

BOOSTER

Q653

BOOSTER

Q654

BOOSTER

Q503

BOOSTER

Q504

BOOSTER

Q533

BOOSTER

Q534

BOOSTER

61

PROTECTOR

POWER KEY

56

S131

?/1

67

SP_B_RY

Q705,706 CURRENT

DETECT

Q655,656 CURRENT

DETECT

Q505,506 CURRENT

DETECT

Q535,536 CURRENT

DETECT

D721

Q722,723,725

PROTECT

SWITCH

Q740

AF POWER

PROTECT

Q640

AF POWER

PROTECT

Q540

AF POWER

PROTECT

Q580

AF POWER

PROTECT

55

HP DETECT

FUSE DETECT

BRIGEABLE RY

POWER RY

58

SIRCS

AVCC VCC3 VCC5

RSTX

STOP

D731

D733

D734

63

54

72

35 84 23

77

48

1

Q790 RELAY DRIVE

Q710 RELAY DRIVE

Q610 RELAY DRIVE

Q810 RELAY DRIVE

Q550 RELAY DRIVE

IC102

REMOTE CONTROL RECEIVER

RY791

RY701

RY601

RY610

RY501

R-CH

IC691

21

+3.3V(STBY)

IC1111

RESET

1 2

R-CH

TM601

SR

SL

TM610

TM501

SB

IC691

57

L

R

C

AUDIO

+5V

J791

PHONES

FRONT A

SURROUND

FRONT B

CENTER

SURROUND

BACK

3 1

Q921

AC DET

POWER AMP

IC1001

+5V REG

TUNER

+3.3V

AEP, UK

SPEAKERS

-B

FL101

-20V

RELAY

+B

AUDIO

+7V

AUDIO

-7V

TUNER

+10V

IC1071

+3.3V

REG

Q691,692

-B

SWITCH

Q801

-20V REG

+3.3V

+2.5V

+5V

Q809 RELAY DRIVE

IC801

+7V

1 3

REG

IC802

-7V

3 2

REG

IC1902

+10V

3 1

REG

IC1904

+3.3V

3 1

REG

IC1901

+3.3V

2

REG

4

+2.5V

5

REG

IC1031

+5V

3 1

REG

D802

+B

-B

EXCEPT CND

D920-923

D805-808

CND

D910-913

D914

Q901 RELAY DRIVE

RY801

RY803

RY802

F1

F2

D915

RY901

T901

T902

F901

E51

S901

VOLTAGE

SELECTOR

AC IN

STR-K870P

1515

STR-K870P

3-3. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE A) – • See page 12 for Circuit Boards Location.

JR1303

R1351

JR1302

IC1301

IC1502

R1354

IC1303

:Uses unleaded solder.

IC1111

AEP, UK

• Semiconductor Location

Ref. No.

D1001 C-8 D1103 G-7 D1105 G-8 D1106 G-7 D1301 D-3 D1302 D-2

IC1101 F-8 IC1111 D-9 IC1131 G-7 IC1301 C-3 IC1303 D-2 IC1401 F-2 IC1403 F-4 IC1404 F-5 IC1405 F-6 IC1406 G-7 IC1452 F-4 IC1501 E-5 IC1502 C-5 IC1503 F-6

Q1103 G-8 Q1104 G-8 Q1105 G-8

Location

IC1401

IC1452

C1542

IC1403

5

8

IC1501

IC1101

IC1503

4

1

IC1404 IC1405

5

8

4

1

5

8

4

1

IC1406

5

8

4

IC1131

1

STR-K870P

1616

STR-K870P

3-4. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE B) – • See page 12 for Circuit Boards Location.

STANDBY BOARD

CNP903

(Page 26)

N

Pin No.1 to Pin No.5

MAIN BOARD

CNP912

(Page 22)

K

Pin No.6 to Pin No.9

IC1901

IC1071

AEP, UK

IC1031

IC1902

IC1904

L

MAIN BOARD

CNP911

(Page 22)

EXCEPT AEP, UK

:Uses unleaded solder.

TN1

TUNER UNIT

AEP, UK

1

D

VIDEO BOARD

CNS250

(Page 31)

IC1351

C1351

IC1354

C1354

VIDEO 2

IN

SA-CD /

CD IN

OPTICAL

• Semiconductor

Ref. No.

D1003 E-9 D1004 E-8 D1107 D-3 D1108 D-3 D1110 D-3 D1111 D-3

IC1001 F-8 IC1031 B-3 IC1071 B-5 IC1351 B-10 IC1354 D-10 IC1901 B-2 IC1902 B-4 IC1904 C-2

DIGITAL

Location

M

MAIN BOARD

CNP911

(Page 22)

A

DISPLAY BOARD

CNS100

(Page 27)

FOR

FLASH

PROGRAMMING

21

20

2

1

EXCEPT AEP, UK

R1163

EXCEPT

US, CND

J

R1414

C1413

MAIN BOARD

CNP500

(Page 22)

C1540

C1453

R1454

C1544

R1424

C1423

C1463

R1463

C1543

R1434

C1433

C1545

C1473

R1473

R1444

C1541

C1442

MAIN BOARD

I

DVD IN

COAXIAL

IC1001

R1483

CNP501

(Page 22)

STR-K870P

1717

STR-K870P

3-5. SCHEMATIC DIAGRAM – DIGITAL BOARD (1/4) – • See page 13 for Waveform. • See page 33 for IC Block Diagram.

IC1351

TORX141R

R1351

100

0.1

C1351

CN509

TN1

TUNER UNIT

CNS508

13P

0

FB1302

1k

R1261

1k

R1260

C1252 C1253 C1251

0.1 0.1 0.1

R1252 R1251

39k 39k

IC1354

TORX141R

J1301

R1354

100

0.1

C1354

JR1303JR1302

0

C1314

100

R1307

IC1301

LC89056W-E

C1308

TP1004

100

R1309

0.1

TP1003

0

R1310

1M

0.1

FB1305

X1301

12.288MHz

18p

C1310

18p

C1309

0.1

10k

C1315

R1308

R1318

0UH

100

R1306

R1360

JR1511

0

JR1020

R1305

470

1P

R1355

75

C1356

0.01

C1361

C1357

1p

IC1303

TC7WU04F(TE12R)

C1355

0.1

22

25V

C1360

47p

R1356

1k

R1359

R1358R1357

560k22k

100

D1003

1SS367-T3SONY

C1004

0.022

D1004

FB1306

0

D1302

1SS355TE-17

0.1

C1358

6.3V

1000

C1359

C1302

0.01

R1303

C1303 C1305C1362

R1362

100

C1301

0.1

R1301

5.6k

33k

R1302

4.7k

R1304

100

0.1 0.10.1

C1304

0.01

C1306

47

16V

D1301

1SS355TE-17

R1311

C1313

100p

R1316

100

R1314

10k

100

R1315

100

R1313

100

R1312

C1312

0.1

100

STR-K870P

1818

Sony STR-K870P Service Manual

TABLE OF CONTENTS

3-1. BLOCK DIAGRAM – MAIN SECTION –

3-2. BLOCK DIAGRAM – DISPLAY/POWER SECTION –

3-3. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE A) – • See page 12 for Circuit Boards Location.

3-4. PRINTED WIRING BOARD – DIGITAL BOARD (SIDE B) – • See page 12 for Circuit Boards Location.

3-5. SCHEMATIC DIAGRAM – DIGITAL BOARD (1/4) – • See page 13 for Waveform. • See page 33 for IC Block Diagram.