UK Model E Model - sportsbil.comsportsbil.com/sony/STR/STR-K/STR-K740P_K840P_v1.0_.pdf · UK Model E Model SERVICE MANUAL ... ordinary solder so use caution not to let solder bridges

STR-K740P/K840PUS Model

Canadian ModelAEP Model

UK ModelE Model

SERVICE MANUAL

FM STEREO FM-AM RECEIVER— Continued on next page —

SPECIFICATIONS

Ver 1.0 2002. 02

Dolby Laboratories Licensing Corporation.“DOLBY” the double-D symbol ; “AC-3” and “PRO LOGIC”are trademarks of Dolby Laboratories Licensing Corporation.

Photo : STR-K840P (SILVER model)

Sony CorporationHome Audio Company

Published by Sony Engineering Corporation

9-873-544-012002B1600-1

© 2002.02

POWER OUTPUT AND TOTALHARMONIC DISTORTION:

With 8 ohm loads, both channels driven, from40 – 20,000 Hz; rated 100 watts (STR-K840Ponly)/80 watts (STR-K740P only) per channelminimum RMS power, with no more than0.09 % total harmonic distortion from 250milliwatts to rated output (Models of area codeU only).

Amplifier sectionPOWER OUTPUTModels of area code U, CARated Power Output at Stereo Mode(8 ohms 40 Hz – 20 kHz, THD 0.09 %)STR-K840P: 100 W + 100 WSTR-K740P: 80 W + 80 W

Reference Power Output(8 ohms 1 kHz, THD 0.7 %)STR-K840P: FRONT1):100 W/ch

CENTER1): 100 WSURR1): 100 W/ch

STR-K740P: FRONT1): 80 W/chCENTER1): 80 WSURR1): 80 W/ch

Models of area code CEL,CEKRated Power Output at Stereo Mode(8 ohms 1 kHz, THD 0.7 %)STR-K840P: 100 W + 100 W2)

STR-K740P: 80 W + 80 W2)

Reference Power Output2)

(8 ohms 1 kHz, THD 0.7 %)STR-K840P: FRONT1): 100 W/ch



Models of area code AR, SPRated Power Output at Stereo Mode(8 ohms 1 kHz, THD 0.7 %)STR-K840P: 90 W + 90 W


(8 ohms 1 kHz, THD 10 %)STR-K840P: FRONT1): 120 W/ch


Models of other area codeRated Power Output at Stereo Mode(8 ohms 1 kHz, THD 0.7 %)STR-K840P: 100 W + 100 W2)

STR-K740P: 80 W + 80 W2)


(8 ohms 1 kHz, THD 10 %)STR-K840P: FRONT1): 120 W/ch



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

2) Measured under the following conditions:

Area code Power requirements

E 240 V AC, 50 Hz

SP, CEL, CEK, AR 230 V AC, 50 Hz

MX 120 VAC, 60 Hz

• STR-K740P/K840P are the tuner and theamplifier section in HT-DDW740/DDW840.

2

STR-K740P/K840P

Inputs (Digital)

DVD/LD (Coaxial)

VIDEO 2 (Optical)

Outputs

MD/TAPE (OUT),VIDEO 1(AUDIO OUT)

SUB WOOFER

ToneGain levels: ±6 dB, 1 dB step

FM tuner sectionTuning range 87.5 - 108.0 MHz

Antenna terminals 75 ohms, unbalanced

Intermediate Frequency10.7 MHz

SensitivityMono: 18.3 dBf, 2.2 µV/75 ohmsStereo: 38.3 dBf, 22.5 µV/75 ohms

Usable sensitivity 11.2 dBf, 1 µV/75 ohmsS/NMono: 76 dBStereo: 70 dB

Harmonic distortion at 1 kHzMono: 0.3%Stereo: 0.5%

Separation 45 dB at 1 kHz

Frequency response 30 Hz – 15 kHz,+0.5/–2 dB

Selectivity 60 dB at 400 kHz

AM tuner sectionTuning rangeModels of area code U, CAWith 10-kHz tuning scale: 530 – 1710 kHz6)

With 9-kHz tuning scale: 531 – 1710 kHz6)

Models of area code E, AR, MXWith 10-kHz tuning scale: 530 – 1610 kHz6)

With 9-kHz tuning scale: 531 – 1602 kHz6)

Models of area code MY, SP, CEL, CEKWith 9-kHz tuning scale: 531 – 1602 kHz

Antenna Loop antenna

Intermediate Frequency450 kHz

Usable sensitivity 50 dB/m (at 1,000 kHz or999 kHz)

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

Harmonic distortion 0.5 % (50 mV/m, 400 Hz)

SelectivityAt 9 kHz: 35 dBAt 10 kHz: 40 dB

6) You can change the AM tuning scale to 9 kHz or10 kHz. After tuning in any AM station, turn offthe receiver. Hold down PRESET TUNING + andpress . All preset stations will be erased whenyou change the tuning scale. To reset the scale to10 kHz (or 9 kHz), repeat the procedure.

Video sectionInputsVideo: 1 Vp-p, 75 ohms

OutputsVideo: 1 Vp-p, 75 ohms

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

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

Voltage: 250 mVImpedance: 10 kilohms

Voltage: 2 VImpedance: 1 kilohms

GeneralPower requirements

Area code Power requirements

U, CA, MX 120 V AC, 60 Hz

CEL, CEK 230 V AC, 50/60 Hz

MY, SP, AR 220 – 230 V AC, 50/60 Hz

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

Power consumption

Area code Power consumption

U, MX STR-K840P: 210 WSTR-K740P: 180 W

CA STR-K840P: 300 VASTR-K740P: 260 VA

CEL, CEK, MY, SP, STR-K840P: 180 WE, AR STR-K740P: 155 W

Power consumption (during standby mode)0.5 W

Dimensions 430 145 298 mm(16 7/8 5 6/8 11 6/8inches) includingprojecting parts andcontrols

Mass (Approx.) 7.0 kg (15 lb 7 oz)

Design and specifications are subject to changewithout notice.

Frequency response

MULTI CH IN3), CD,MD/TAPE, DVD/LD,VIDEO 1, 2

Inputs (Analog)

MULTI CH IN3), CD,MD/TAPE, DVD/LD,VIDEO 1, 2

3) HT-DDW840 only4) INPUT SHORT (with sound field and tone

bypassed).5) Weighted network, input level.

10 Hz – 50 kHz+0.5/–2 dB (with soundfield, and tone bypassed)

Sensitivity: 250 mVImpedance: 50 kilohmsS/N4): 96 dB(A, 250 mV5))

• AbbreviationU : US model.CA : Canadian model.CEL : AEP model.CEK : UK model.SP : Singapore model. (Malaysia model included.)MX : Mexican model.MY : Malaysia model.AR : Argentine model.

3

STR-K740P/K840P

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITHMARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTSLIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESECOMPONENTS WITH SONY PARTS WHOSE PART NUMBERSAPPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTSPUBLISHED BY SONY.

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

LEAKAGE

The AC leakage from any exposed metal part to earth groundand from all exposed metal parts to any exposed metal part havinga 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 RCAWT-540A. Follow the manufacturers’ instructions to use theseinstruments.

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

3. Measuring the voltage drop across a resistor by means of aVOM or battery-operated AC voltmeter. The “limit” indicationis 0.75 V, so analog meters must have an accurate low-voltagescale. The Simpson 250 and Sanwa SH-63Trd are examples ofa passive VOM that is suitable. Nearly all battery operateddigital multimeters that have a 2V AC range are suitable. (SeeFig. A)

SAFETY CHECK-OUT

ATTENTION AU COMPOSANT AYANT RAPPORTÀ LA SÉCURITÉ!

LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LESDIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONTCRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NEREMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONYDONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OUDANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

To Exposed Metal Parts on Set

0.15 µF 1.5 kΩACVoltmeter(0.75 V)

Earth Ground

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

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 solderBoards requiring use of unleaded solder are printed with the lead-free mark (LF) indicating the solder contains no lead.(Caution: Some printed circuit boards may not come printed withthe lead free mark due to their particular size.)

: LEAD FREE MARKUnleaded 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 beapplied to the solder joint for a slightly longer time.Soldering irons using a temperature regulator should be set toabout 350°C.Caution: The printed pattern (copper foil) may peel away if theheated tip is applied for too long, so be careful!

• Strong viscosityUnleaded solder is more viscous (sticky, less prone to flow) thanordinary solder so use caution not to let solder bridges occur suchas on IC pins, etc.

• Usable with ordinary solderIt is best to use only unleaded solder but unleaded solder mayalso be added to ordinary solder.

4

STR-K740P/K840P

TABLE OF CONTENTS

1. GENERAL ·········································································· 5

2. TEST MODE ······································································ 6

3. DIAGRAMS ········································································ 83-1. Circuit Board Location ·················································· 83-2. Block Diagrams – MAIN Section – ···························· 10

– DISPLAY/POWER Section – ··································· 113-3. Printed Wiring Board – DIGITAL Section – ··············· 123-4. Schematic Diagram – DIGITAL Section (1/2) – ········· 133-5. Schematic Diagram – DIGITAL Section (2/2) – ········· 143-6. Printed Wiring Board – MAIN Section – ···················· 153-7. Schematic Diagram – MAIN Section (1/2) – ·············· 163-8. Schematic Diagram – MAIN Section (2/2) – ·············· 173-9. Printed Wiring Board – DISPLAY Section – ·············· 183-10.Schematic Diagram – DISPLAY Section – ················· 193-11.Printed Wiring Board – VIDEO Section – ·················· 203-12.Schematic Diagram – VIDEO Section – ····················· 203-13.Printed Wiring Board – POWER Section – ················· 213-14.Schematic Diagram – POWER Section – ··················· 223-15. IC Block Diagrams ······················································ 233-16. IC PIN FUNCTION DESCRIPTIONS ······················· 25

4. EXPLODED VIEWS ······················································ 274-1. Front Panel Section ····················································· 274-2. Chassis Section-1 ························································ 284-3. Chassis Section-2 ························································ 29

5. ELECTRICAL PARTS LIST ······································· 30

MODEL IDENTIFICATION— BACK PANEL —

Parts No.

MODEL PARTS No.K740P : US 4-238-189-2s

K740P : Canadian 4-238-189-3s

K740P : Malaysia,Singapore 4-238-189-4s

K740P : E 4-238-189-5s

K740P : AEP 4-238-189-6s

K740P : UK 4-238-189-7s

K840P : US 4-238-193-0s

K840P : Canadian 4-238-193-1s

K840P : Malaysia, Singapore 4-238-193-2s

K840P : E 4-238-193-3s

K840P : AEP 4-238-193-4s

K840P : UK 4-238-193-5s

K840P : Argentine 4-238-193-8s

K840P : Mexican 4-238-193-9s

5

STR-K740P/K840PSECTION 1GENERAL This section is extracted

from instruction manual.

g

+–

1 74 523 6 90qaqsqdqfqg qhqjqkqlw; waws8

FM MODE (Models of area codeCEL, CEK only) ed, (Except formodels of area code CEL, CEK)ef (32)

INPUT MODE qg (22)IR (receptor) 4 (39, 46, 52)LEVEL 0 (16, 20, 28, 57)

MMASTER VOLUME wd (20, 50)MD/TAPE qj (22)MEMORY eh (31, 33)MENU +/– e; (16, 28, 36, 37, 57)MENU </> ea (16, 28, 36, 37, 57)MODE wj (25, 30, 51)MULTI CHANNEL DECODING

(indicator) (HT-DDW840 only)7 (22)

MULTI CH IN (HT-DDW840only) qf (22)

MUTING wf

8

(22, 50)

N – SNAME (36)PHONES (jack) ek (22, 51)PRESET/PTY SELECT +/–

(Models of area code CEL, CEKonly) 3 (33, 34)

PRESET TUNING +/– (Exceptfor models of area code CEL,CEK) 3 (33, 54)

PTY (models of area code CEL,CEK only) ef (34)

SET UP 6 (4, 16, 37, 57)SHIFT eg (33)SLEEP (HT-DDW740 only) qf

(37)SURR qd (28, 57)

T – ZTREBLE +/– qh (30, 57)TUNER ws (22, 32, 33, 36)TUNING +/– 5 (32)VIDEO 1 qk (22)VIDEO 2 w; (22)

BUTTON DESCRIPTIONS

?/1 (power) 1 (4, 15, 20, 21,30, 31, 54)

ALPHABETICAL ORDER

0 – 92 CH wh (26)

A – DA.DEC wk (24, 26)AM (Except for models of area

code CEL, CEK) es (31, 32)BASS +/– wg (19, 30, 57)CD ql (22)CINEMA STUDIO EX A, B, C9 (25)

Digital Cinema Sound (indicator)qs (24)

DIMMER ej (23)DISPLAY 2 (23, 34, 52)Display qa (23)DVD/LD wa (22)

E – LENTER wl (36)FM (Except for models of area

code CEL, CEK) ed (31, 32)FM/AM (Models of area code

CEL, CEK only) es (31, 32)

ek ej eh eg ef ed es ea e; wl wk wj wh wg wf wd

• AbbreviationCEK : UK model.CEL : AEP model.

6

STR-K740P/K840PSECTION 2

TEST MODE

FACTORY PRESET MODE* All preset contents are reset to the default setting.* Procedure:

While depressing the VIDEO 1 and the 2CH buttons simul-taneously, press the power ?/1 button to turn on the main power.The message “FACTORY” appears and switch off the set.While depressing the VIDEO 1 and the 2CH buttons simul-taneously, press the power ?/1 button again. The message“FACTORY” appears and the present contents are reset to thedefault values.

AM CHANNEL STEP 9 KHZ/10 KHZSELECTION 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 thePRESET+ button, press the power ?/1 button to turn on themain power. Either the message “9 k STEP” or “10 k STEP”appears. Select the desired step.

* For US/Canadian/E model only

SPEAKER SIZE SELECTION MODE*Either Normal Speaker or Micro Satellite Speaker can be selected.*Procedure: While depressing the LEVEL button, press the power ?/1 buttonto turn the main power.Either the message “NORM. SP.” or “MICRO SP.” is displayed.Select the desired speaker size.

FLUORESCENT INDICATOR TUBE TEST MODE* All fluorescent segments are tested. When this test is activated,

all segments turn on at the same time, then each segment turns onone after another.

* Procedure:While depressing the MD/TAPE and the SHIFT buttons simul-taneously, press the power ?/1 button to turn on the main power.

1. All segments turn on.

MULTI CHANNEL DECODING , Digital Cinema Sound ,A.F.D. , MODE , 2CH and SET UP LED turn on.

2. Press the VIDEO button, confirm display.

A.F.D. , MODE , LEVEL , SET UP , and Digital Cinema SoundLED turn on.

3. Press the VIDEO button, confirm display

MULTI CHANNEL DECODING , 2CH , SURR and NAMELED turn on.

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

5. Every pressing of the VIDEO button turns on eachsegment and LED one after another in the same order.(Not only the VIDEO button, but also the other buttons such asDVD/LD , TV/SAT , MD/TAPE , CD , TUNER and AUX canbe used.)

SOUND FIELD CLEAR MODE* The preset sound field is cleared when this mode is activated.

Use this mode before returning the product to clients uponcompletion of repair.

* Procedure:While depressing the MODE button, press the power ?/1 buttonto turn on the main power.The message “SURR. CLR.” appears and initialization isperformed.

DEMONSTRATION MODE* Demonstration is performed.* Procedure :

While depressing the SET UP button, press the power ?/1button. The message appears and demonstration is performed.

* To finish DEMONSTRATION MODE, press the power ?/1button while the introduction message appears in the display.

SOFTWARE VERSION DISPLAY MODE* The software version is displayed.* Procedure:

While depressing the ENTER and the A.F.D buttonssimultaneously, press the power ?/1 button to turn on the mainpower. The model name, destination and the software version aredisplayed.

KEY CHECK MODE* Button check* Procedure:

While depressing the VIDEO 1 and the SHIFT buttonssimultaneously, press the power ?/1 button to turn on the mainpower.“REST 39” appears. (AEP, UK, model: “RESET 38”)Every pressing of any button other than ?/1 and SPEAKERScounts down the buttons. The buttons which are already countedonce are not counted again. When all buttons are pressed “REST00” appears.When MASTER VOLUME is rotated in clockwise direction,“VOL MIN”, “VOL 1” to “VOL 48”, “VOL MAX” appear.

SW

L

SL

C R

S SR

SLEEPSP.OFF

( ( ( L F E ) ) )

DIGITALOPT COAX MULTI CH IN

PRO LOGIC DTS MPEGSTEREO MONO RDS MEMORYMUTINGINFONEWSTAEQD.RANGE

D D

dBkHzmft.MHz

SW

L R

S

SLEEP

L F E

COAXPRO LOGIC MPEGSTEREO RDS

MUTINGINFOTAD.RANGED D

k m MHz

SL

C

SR

SP.OFF

( ( ( ) ) )

DIGITALOPT MULTI CH IN

DTS MONO MEMORYNEWSEQ

dB Hz ft.

7

STR-K740P/K840P

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 bythe tuner, and sets up the broadcasts. Be sure to start scanningafter 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.3. The message “AUTO-BETICAL SELECT” appears and the

receiver starts scanning.

8

STR-K740P/K840PSECTION 3DIAGRAMS

3-1. Circuit Board Location

VIDEO board

DIGITAL board

MAIN board

DISPLAY board

HEADPHONE board

POWER SW board

STANDBY board AC SELCT board (E model only)

99

STR-K740P/K840P

• Waveform

DIGITAL Board

1 IC1101 wa (XOUT)

4.4Vp-p

81ns (12.288MHz)

2 IC1201 9 (MCLK1)

3.3Vp-p

73ns (13.59MHz)

3 IC1601 id (XI)

2.8Vp-p

5ns (20MHz)

For schematic diagrams.Note:• All capacitors are in µF unless otherwise noted. p : pF. 50

WV or less are not indicated except for electrolytics andtantalums.

• All resistors are in Ω and 1/4 W or less unless otherwisespecified.

• % : indicates tolerance.• f : internal component.• 2 : nonflammable resistor.• 5 : fusible resistor.• C : panel designation.

• A : B+ Line.• B : B– Line.• Voltages and waveforms 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 produc-tion tolerances.

• Waveforms are taken with a oscilloscope.• Circled numbers refer to waveforms.• Signal path.

F : FMJ : CD (ANALOG)c : DVD (DIGITAL)

• AbbreviationCND : Canadian modelMY : Malaysia modelSP : Singapore modelAR : Argentine modelMX : Mexican model

THIS NOTE IS COMMON FOR PRINTED WIRINGBOARDS AND SCHEMATIC DIAGRAMS.(In addition to this necessary note is printed in eachblock.)

Note:The components identified bymark 0 or dotted line with mark0 are critical for safety.Replace only with part numberspecified.

Note:Les composants identifiés parune marque 0 sont critiquespour la sécurité.Ne les remplacer que par unepièce portant le numéro spécifié.

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.

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.

C

B

These are omitted.

E

Q

B

These are omitted.

C E

1010

STR-K740P/K840P

3-2. Block Diagrams – MAIN Section –

AUDIO IN

AUDIO IN

AUDIO IN

MULTICH IN

FRONT

SURROUND

CENTER

SUB WOOFER

J401

PROC.

L IN92

L REC367

L IN771

L IN263

L REC161

L IN162

51L OUT

L IN569

47SL OUT

39C OUT

35SW OUT

MUTINGQ361

DATA20

CLK21

LATCH22

MUTINGQ365

MUTINGQ363

MUTINGQ364

15

CLK

SDA

SCL

16

LATC

H

14

DATA

SYSTEM CONTROLIC1601(2/3)

J404

DVD/LDIN

VIDEO 2IN

J1101

3 5 6 2IC1102

DIGITAL AUDIOI/F RECEIVER

IC1101

L

DIN25

DO35

DI36

CLK38

CE37

ERROR34

XSTATE17

XMODE48

13CK OUT

14BCK

15LRCK

16DATAO

IC1102

X110112.288MHz

AUDIO DSPIC1201

KFSI022

SDI230

HCLK34

HCS36

HACN32

PM113BST56

XRST2

23SDO1

24SDO2

25SDO3

BCKI229

LRCKI228

IC1202

SRAM

AUDIO CODECIC1501

MCLKI39

CDT143

CCLK42

CS41

PD17

S.MUTE3

27L OUT1

BCK4

LRCK5

SDTO9

SDTI16

SDTI27

SDTI38

25L OUT2

23L OUT3

24R OUT3

LIN+30

LIN-29

2 1IC1502

6 7IC1502

ANALOG SOUND

AL IN11

SL

13

16

15

AL OUT10

DL IN27

29

31

32

ASL IN

ASW IN

AC IN

SL

C

SW

DSL IN

DC IN

DSW IN

A

98 97 95 96 99 100 94 1

DO DI

CLK CE

ERRO

R

XSTA

TE

CKSE

L1

DATA

0

20

HCLK

4

HCS

5

HACN

7

PM

3

BST

6

XRST

10

CDT1

12

SCL

13

CS

8

PD

9

SMUT

E

24

ANA/

DIG

MUTINGCONT

Q1601,1602

21

5 6

34 33

F.M

UTIN

G

MUTINGSWITCH

Q379

49MD0

51MD2

28SP SWITCH/FLASH 1

27FLASH 2

MD0

VDD

MD2

FLASH 1

FLASH 2

RESET

+3.3V

CNS3

B

J403

J402

CD

MD/TAPE

DVD/LD

VIDEO 2

AUDIO OUT

OPTICALIN

IC1105

DIN14

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

: FM

: CD(ANALOG)

: DVD (DIGITAL)

22 21XIN XOUT

93

XMOD

E

CKSEL147

GP968

HD OUT35

HD IN33

2

GP9

18

HD O

UT

19

HD IN

9MCLK1

12MCLK2

X120113.5MHz

14SCK OUT

20BCKO1

19LRCKO

18SDI1

24AUDIO GP869

EXLOCK59

L IN81

FLASHFOR

PROGRAMMING

TUNER PACK

FM75 Ω

COAXIAL

AM

R-CH

ST-DI

ST-DO

CLK

CE

STEREO

TUNED

MUTING

FM

AM

R CH

L CH

SYSTEM CONTROL.IC1601(1/3)

DO76

J200

V1 OUT15

V113

M.OUT1 14SW1

VIDEO SELECT

VIDEO OUT

VIDEO OUT

VIDEO 1

MONITOR

J201

V25

DVD3DVD/LD

VIDEO 1

VIDEO IN

VIDEO IN

VIDEO IN

VIDEO 2

IC103

10SW2

4SW3

6SW4

2SW5

SLATCH78

STEREO74

TUNED73

MUTING75

RDS-DATA RDS DATA53

RDS-INT RDS CLOCK52FM SIG OUT RDS SIGNAL43

SW190

SW289

SW388

SW487

IN

OUT

IN

COAXIAL

OPTICAL

DIGITAL

ANTENNA

AEP, UK

D204

D203

-

-

D1101

IC201

D1601

SDA SCL

EEPROM

IC1604

1111

STR-K740P/K840P

– DISPLAY/POWER Section –

IN28

12+V OUT2

POWER AMPIC701

POWER AMPIC702

9NF2

LIMITERQ701,702

11-V OUT2

IN2

12+V OUT2

9NF2

11-V OUT2

BOOSTERQ703

BOOSTERQ704 CURRENT

DETECT

Q705,706

AF POWERPROTECT

Q740

LIMITERQ651,652

BOOSTERQ653

BOOSTERQ654 CURRENT

DETECT

Q655,656

IN+1

6+V OUT

POWER AMPIC501

2IN-

LIMITERQ501,502

5-V OUT

BOOSTERQ503

BOOSTERQ504 CURRENT

DETECT

Q505,506

D721

PROTECTSWITCH

Q722,723,725

RELAYDRIVE

Q790RY791

RELAYDRIVE

Q710RY701

D731

RELAYDRIVE

Q610RY601

D733

RELAYDRIVE

Q550RY501

D734

IC4015 7

RELAYDRIVE

Q560RY560

L

R

SR

SL

C

R-CH

R-CH

R-CH

PHONES

TM601

TM602

AUDIOOUT

J405

67

PROT

ECTO

R

68

HEAD

PHON

E RE

LAY

72

PREO

UT/F

RONT

REL

AY

70

REAR

REL

AY

71

CENT

ER R

ELAY

69

WOO

FER

RELA

Y

LED DRIVEQ100-104

RV102

ENCODER3 1

VOL(

B)

59

VOL(

A)

60

POW

ER K

EY

56

?/1

S145

77RSTX

48STOP

54SIRCS

55FUSE DETECT

REMOTECONTROLRECEIVER

1

IC102

D910-913

ACIN

T902

RY901

D915

F901

D914

RELAYDRIVE

Q901

D820-823

23VCC5

84VCC3

-5VREG

3 2

+5VREG

3 1

-7VREG

3 2

+7VREG

1 3AUDIO+7V

VIDEO+5V

VIDEO-5V

IC801

IC802

IC807

IC804

POW

ER R

ELAY

66

RELAY+B

D902-905

82 83

X0 X1

X160120.0MHz

F1

F2

L

SLSL

C

SW

A

MUTING1

MUTING1

POWERMUTING

Q747,748

22

AC M

UTIN

G

J791

FLUORESCENTINDICATOR TUBE

FL101

61

DIN

62

CLK

63

FL_S

TB

7

DIN

8

CLK

9

STB

14 29

SEG1-16

42 31

GRID1-12

F1 F2

1SW1

2SW2

3SW3

4SW4

FL DRIVEIC100

D111-114

29

BLUE

LED

30

MOD

E LE

D

31

2CH

LED

32

AFD

LED

26

DCS

LED

FUNCTIONKEY

A/D0

38

S110-119S100-109

FUNCTIONKEY

A/D1

39

FUNCTIONKEY

A/D2

40

S120-128

FUNCTIONKEY

A/D3

41

S130-137,S143,144

B RESET

SYSTEM CONTROLIC1601(3/3)

• Signal Path• R-CH is omitted due to same as L-CH

: FM

AF POWERPROTECT

Q640

AF POWERPROTECT

Q540

IC6012 1

FRONT

SURROUND

CENTER

IC6015 7

25

HP D

ETEC

T

BUFFERIC101

D100-104

35AVCC

+3.3VREG

3 1

IC1904

AUDIO-7V

D899

D898

+10VREG

3 1TUNER+10V

IC1902

T901

+3.3V REGQ471

Q921AC DET

+3.3VREG

3 1

IC1905

1 2

IC1602

TUNER+3.3V

+3.3V

D802

+B

-B

-B SWQ691,692

-30V REGQ801FL101

-30V

POWER AMP-B

+5VREG

3 1

IC1903

+5V

+2.5VREG

5+2.5V

+3.3VREG

2

4

IC1901

+3.3V

+5VREG

3 1

IC1503AUDIO+5V

SPEAKERS

SUBWOOFER

MASTERVOLUME

8

Q107-111LED

DRIVE

RESET

+3.3V(STBY)

K740P:AEP,UKK840P:AEP,UK

S901VOLTAGE

SELECTOR

K740P:E/K840P:E MODEL ONLY

g

1313

STR-K740P/K840P

3-4. Schematic Diagram – DIGITAL Section (1/2) – • See page 9 for Waveform. • See page 23 for IC Block Diagrams.

IC B/D

1414

STR-K740P/K840P

3-5. Schematic Diagram – DIGITAL Section (2/2) – • See page 9 for Waveform. • See page 25 for IC Pin Function Description.

1616

STR-K740P/K840P

3-7. Schematic Diagram – MAIN Section (1/2) – • See page 23 for IC Block Diagrams.

13

1717

STR-K740P/K840P

3-8. Schematic Diagram – MAIN Section (2/2) – • See page 23 for IC Block Diagrams.

IC B/D

IC B/D

IC B/D

1919

STR-K740P/K840P

3-10. Schematic Diagram – DISPLAY Section – • See page 24 for IC Block Diagrams.

IC B/D

2020

STR-K740P/K840P

• See page 8 for Circuit Boards Location.

3-11. Printed Wiring Board – VIDEO Section – 3-12. Schematic Diagram – VIDEO Section – • See page 24 for IC Block Diagrams.

IC807

IC804

IC103

• : Uses unleaded solder.

IC B/D

2121

STR-K740P/K840P

• See page 8 for Circuit Boards Location.3-13. Printed Wiring Board – POWER Section –

CNP801(Page 15)

1

2

3

CNP802(Page 15)

H

J

K740P:US, CND/K840P:US, CND

EXCEPT K740P:E/K840P:E

K740P:E/K840P:E

(CHASSIS)

1

2

3

1

2

3

4

5

• : Uses unleaded solder.

2222

STR-K740P/K840P

3-14. Schematic Diagram – POWER Section –

F9012.5V/250V : EXCEPT K740P:US,CND/K840P:US,CND,MX6.3V/125V : K740P:US,CND/K840P:US,CND,MX

UK Model E Model - sportsbil.comsportsbil.com/sony/STR/STR-K/STR-K740P_K840P_v1.0_.pdf · UK Model E Model SERVICE MANUAL ... ordinary solder so use caution not to let solder bridges

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