Kenwood KRF-V7772D Manuale utente

AUDIO VIDEO SURROUND RECEIVER

KRF-V7772D

VR-3080

POWER

ON/STANDBY

CLIP INDICATOR DOLBY DIGITAL DTS

SPEAKERS

BMUTE

VOLUME

DOWN UP

INPUT SELECTOR

DISPLAY MODE

PHONES S VIDEO V AV AUX L-AUDIO-R CD2/TAPE2

MONITOR

PRE OUT

FRONT

SURROUND

CENTER

SUBWOOFER

GND

75Ω

ANTENNA

AUDIO

PHONO CD1

MD/TAPE1

REC

OUT PLAY

VIDEO1

REC

OUT PLAY

VIDEO2

PLAY

VIDEO3

PLAY

VIDEO4

PLAY

CD2/TAPE2

MONITOR

REC

OUT PLAY

FRONT SPEAKERS

(6-16Ω)

SURROUND SPEAKERS

(6-16Ω)

CENTER

SPEAKER

(6-16Ω)

SWITCHED

TOTAL 100W MAX.

S VIDEO

VIDEO

MONITOR

OUT

VIDEO1

REC

OUT PLAY

VIDEO2

PLAY

VIDEO3

PLAY

VIDEO4

PLAY

DIGITAL IN

SL16

TEXT SYSTEM

CONTROL

VIDEO2

OPTICAL OPTICAL COAXIALCOAXIAL

VIDEO3 VIDEO4 CD1

IRRECEIVER

DC12V 15mA

IRREPEATER

OUT

IROUT

LCD

REMOTE

SL16 XS8

Panel *

(A60-)

Panel escutcheon

(B01-0533-21)

Knob

(K29-6855-03) Indicator

(B12-0333-04) Knob

(K29-6855-03)

Front glass

(B10-2418-03)

Indicator

(B12-0326-04) Front glass

(B10-2451-03)

Cylindrical receptacle

(E56-0012-05) Foot

(J02-1405-03)

Phone jack

(E11-0271-05)

Knob

(K29-6858-12)

Indicator

(B12-0331-04)

Knob

(K29-6858-12) Knob

(K29-6852-04)

AC power cord*

(E30-)

Slide switch

(S31-2132-05)

Phono jack

(E63-1028-05)

Cylindrical receptacle

(E56-0011-05) Phono jack

(E63-0162-05)

Phono jack

(E63-0141-15)x2

Screw terminal board

(E70-0096-05)

*Refer to parts list on page37~.

Power cord bushing

(J42-0083-05)

Phono jack

(E63-1084-05)

Screw terminal board

(E70-0095-05)

Miniature phone jack

(E11-0360-05)

Miniature Phone jack

(E11-0291-05)

Optical receiving module

(W02-1181-05)

Lock terminal board

(E70-0052-05)

AC outlet *

(E03-)

Miniature Phone jack

(E11-0389-05)

Phono jack

(E63-0139-15)

Miniature Phone jack

(E11-0293-05)

Phono jack

(E63-1030-05)

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PowerPad

(A70-1191-05) : RC-R0907

Battery cover(A09-1115-08)

Remote

ENTER

VOLUME

CONFIRM

MUTE

ON/STANDBY

Batteries AM Loop Antenna (T90-0833-05)

(E03-0115-05)

plug adapter

(T90-0841-05)

Antenna

Use to adapt the plug onthe

power cord to the shape of the

wall outlet.

(Present only for regions where

use is necessary.)

AM Antenna Base

KRF-V7772D/VR-3080

CONTENTS / ACCESSORIES

CONTENTS/ACCESSORIES/CAUTIONS...................2

CONTROLS.................................................................3

DISASSEMBLY FOR REPAIR.....................................4

BLOCK DIAGRAM.......................................................5

CIRCUIT DESCRIPTION.............................................6

ADJUSTMENT...........................................................12

WIRING DIAGRAM....................................................13

PC BOARD ................................................................14

SCHEMATIC DIAGRAM............................................19

EXPLODED VIEW .....................................................36

PARTS LIST...............................................................37

SPECIFICATIONS.....................................................49

Contents

Accessories

RESET

Resetting ReceiverPowerPad

If you want to reconfigure PowerPad, you can reset

it. You do not need to do this unless you experience

a problem.

1. Open the cover and remove the batteries,

2. Use a pen or other thin-tipped object to press

the blue button in the center of the battery case:

OPEN

3. Reinstall the batteries and follow the instruc-

tions in this chapter to set up PowerPad again.

If none of the above solutions work, reset the micro-

processor:

(For USA and Canada)

1. Turn the receiver off.

2. Unplug the receiver.

3. Plug it back in while pressing and holding the

Power button (you may need someone else to

help you do this)

4. Continue to hold the Power button for more than

1 second.

(For Other Countries)

1. Turn the receiver off. (The Power button is OFF

position.)

2. Press ON/STANDBY button while pressing and

holding the Power button.

3. Continue to hold the Power button for more than

1 second.

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KRF-V7772D/VR-3080

CONTROLS

POWER

ON/STANDBY

CLIP INDICATOR DOLBY DIGITAL DTS

SPEAKERS

BMUTE

VOLUME

DOWN UP

INPUT SELECTOR

DISPLAY MODE

PHONES S VIDEO V AV AUX L-AUDIO-R CD2/TAPE2

MONITOR

POWER

ON/STANDBY

ON OFF

9. Volume control knob

10. Display Mode button

11. Input selector button

12. AV AUX S VIDEO jack

13. AV AUX composite video jack

14. AV AUX audio jacks

15. CD2/Tape 2 Monitor indicator light

1. Power On/Standby button

2. Power indicator light

3. Display panel

4. Speaker selector buttons

5. Headphone jack

6. Mute button

7. IR indicator

8. IR transmitters

Except for USA

and Canada

ENTER

VOLUME

CONFIRM

MUTE

ON/STANDBY

1. LCD display screen

2. Joystick

3. Enter button

4. Volume up button

5. Volume down button

6. Confirm button

7. Mute button

8. On/Standby button

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5x2

9x5

8x2

3x2

13 13

KRF-V7772D/VR-3080

DISASSEMBLY FOR REPAIR

3x4

X09-

HOOK

2x2

2x7

X08-

B side

[Remove the escutcheon (operation

panel)]

1. Remove the knob(1), the nut (2), the 11

screws(3, 4, 5) and 2 hooks (6), then

remove the front panel ass'y.

2. Remove the lead wire(7), the 2 screws(8:

except K,P type) and 7 screws(9) then

remove the PCB.

3. Remove the under front glass(0, -), then

remove the front panel(=) from the sub

panel.

4. Remove the 2 under escutcheon sides(~) by

·screw driver and the 2 hooks(!) then

remove the escutcheon(@).

[Check the audio PCB(X09)]

1. Remove the 9 screws (1,2,3).

2. Remove the 4 hooks(4,5) and remove the

audio PCB(X09),then stand the set with left

side downward.

3. Connect between the chassis of the set and

the rear panel with an alligator clip lead wire

(6).

[Check the B side of the DSP PCB

(X08)]

1. Remove the 11 screws(1,2).

2. Remove the X08(C/10)(J/10) (3), then

remove the X08(A/10) (4).

3. Solder the pin 1(-17V), the pin 4 (+17V) and

the pin 6(GND) between CN1 on the

X08(A/10) and CN2 on the X08(I/10) with 3

lead wires (5).

4. Connect between the each GND of J1, J62,

J61, J2 on the X08(A/10)and the rear panel

with 4 alligator clip lead wires (6).

Fig. 2

Fig. 1

Fig. 3

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VIDEO 1

AV AUX

(FRONT)

VIDEO 4

VIDEO 3

VIDEO 2

VIDEO 1

COMP

VIDEO

PLAY

COMP

REC

VIDEO

Q611,612

BA7626F

IC61

Q621,622

OUT Q623

(OSD)

1Vp-p/75

(VISUAL)

VIDEO 1

VIDEO 2

VIDEO 3

VIDEO 4

(FRONT)

AV AUX

REC

PLAY

(S1-VIDEO)

1Vp-p/75

MONITOR OUT

Q643

Q653,

Q655

Q642

Q641

VIDEO 1

Q651,652

BA7626F

IC65,66

CD1

VIDEO1

VIDEO2

VIDEO3

VIDEO4

MD/TAPE1

TAPE2

VIDEO1

VIDEO3

VIDEO2

VIDEO4

AVR

IC8

+5.7V

GND

D17-20

FINAL TR.

GND

PRE DRIVE

GND

PRE DRIVE

Q100

RELAY

DRIVER

-17V

GND

+17V D3-6

AVR

+5.0V

GND

Q16

AVR D13-16

Q7 AVR

-35V

FIL

STROKE SW

RELAY

DRIVER

AC OUTLET

AVR

IC5

CD1

L3,R3

L2,R2

L1,R1

L8,R8

L7,R7

L6,R6

L5,R5

MONITOR

L6,R6

MD/TAPE1 L4,R4

L3,R3

IC2

BUFFER

REC OUT

L1,R1 L8,R8

L7,R7

IN L2,R2

LINE

BUFFER

IC3

TUNER

2.5mV/

PHONO

IC6

IC5

IC4

IC1

(ANALOG)

INPUT ATT IC1

BUFFER

DAC

DIR

IC3 21kHz LPF

21kHz LPF

IC11

IC21

IC31(1/2)

IC31(2/2)

SUB

CENTER

LS,RS,

FL,FR

CONFIG-2

IC12,13

FILLTER

TONE OFF

L7,R7

L6,R6

L5,R5

L2,R2

TONE

IC41

IC42

L1,R1

L8,R8

L3,R3

VOLUME

IC16

IC26

IC36(1/2)

IC36(2/2) Q352

Q251,252

-20dB

Q351

Q151,152

ATT

-20dB

ATT

-20dB

ATT

-20dB

ATT

IC37

(2/2)

(1/2)

IC27

IC17

AMP

Q15

Q13,14

Q11,12

MUTE

A-MUTE

MUTE

Q253-256

Q353,355

MUTE

Q354,356

MUTE

POWER

AMPLIFIER

POWER

RELAY A

RELAY CS

RELAY B

A-MUTE

S-MUTE

SW-MUTE

FRONT

L,R

FRONT B

LS,RS

PHONES

L,R

FRONTA

SPEAKERS

PRE OUT

1.0V/1K

u-COM

IC71

CONTROL

REMOTE

A91

PROTECTION

S1 DETECTOR

V MUTE

SP.RELAY

SW MUTE

S MUTE

A MUTE

200mV/47K

200mV/2.2K

OUT

OTHER

IC15

AMPLIFIER

DIGITAL

PHONES1.3Vrms/32 S1

CD2/TAPE2

PLAY

AV AUX IN

(FRONT)

REC

OUT

COAXIAL

OPTICAL

(2/2)

IC32

L,R

+5.7V IC62

AVR

4.7K

PHONO

Q153-156

1.1Vrms/32

L4,R4

MONITOR

Q3,4Q1,2

654

IC37

LS,RS

A/C

CONVERTER

CS4226

DSP

SRAM

IC51

IC52

X51

IC56,57

-6dB

ATT

IC32

(1/2)

L4,R4

TUNER 8

AUDIO SEL. 3

DPS 10

DIR DAC,ADC 9

TONE.VOL. 3

20dB ATT

6 (J TYPE)

OUT

IR REPEATER

J85

IR RECIEVER

J84

OUT

IR RECIEVER

J83

IR LED

REMOTE OUT

D571-574

SYSTEM

J81

SYSTEM

CONTROL

J82

TEXT

SL16

ED1

LEDx7

MI-COM

IC91

38kHz

FILTER

856,857

Q851,852,

455kHz

FILTER

Q853-855

CONTROL

IC72

REMOTE

MI-COM

BUSY

DATA,

D30

D10

AVR

IC54

+3.3V

AVR

K,Y,M,X

20.0V/4

24.5V/6K,Y,M,X

5ch SP. OUTPUT

DETECTOR

IC67

-20dB ATT

V-MUTE

SE-RLY

POWER-RLY

u-COM

POWER

SELECTOR

SRAM

CODEC

VOLUME

-3dB ATT

-6dB ATT

-144

R141

RST

u-COM

TONE

TUNER

PRE AMP

to DSP

VIDEO

SELECTOR

u-COM

EACH

INPUT

C-TERMMNAL

VR-3080

(X09) (X08)

(X09)

KRF-V7772D

(X08)

(X05)

(X08)

(J TYPE)

(X08)

(SIGNAL STAGE) (u-COM STAGE)

KRF-V7772D/VR-3080

BLOCK DIAGRAM

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KRF-V7772D/VR-3080

CIRCUIT DESCRIPTION

(0 : Pull down, 1 : Pull up)

TYPE BAND Reception

frequency Channel IF

PLL standard

Tuner sw

space frequency TSW3 TSW2 TSW1 TSW0

K1 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 0000

1700 AM 530kHz~1700kHz 10kHz +450kHz 10kHz

K2 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 0011

1610 AM 530kHz~1610kHz 10kHz +450kHz 10kHz

K4 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 1010

1700 RBDS AM 530kHz~1700kHz 10kHz +450kHz 10kHz

E1 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz 0001

AM 531kHz~1602kHz 9kHz +450kHz 9kHz

E3 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz

RDS AM 531kHz~1602kHz 9kHz +450kHz 9kHz 0101

FML 65.0MHz~74.0MHz 10kHz +10.7MHz 5kHz

Q1 FMH 87.5MHz~108.0MHz 50kHz +10.7MHz 5kHz 1011

RDS AM 531kHz~1602kHz 9kHz +450kHz 9kHz

MK2/E1 is switched with only the setting of DSW1 (X11 : S601). 00X1

(DSW1 = 0 : K2 type, 1 : E1 type)

10 11 12 13

1. The back up item and initialization

condition

1-1 Back up

• POWER ON/OFF : OFF

• VOLUME LEVEL : -66dB

• AUDIO INPUT • SELECTOR : TUNER

• VIDEO INPUT • SELECTOR : VIDEO1

• SPEAKER A : ON

• SPEAKER B : OFF

• CD2/TAPE2 MONITOR : TAPE2 OFF

• TONE : OFF

• LOUDNESS : OFF

• DISPLAY MODE : DEVICE+DGTL/ANLG

• DIMMER : DIMMER 1 (LIGHTEST)

• SURROUND MODE : STEREO

• ROOM SIZE : Med

• WALL TYPE : Med

• EFFECT LEVEL : 3

• MIDNIGHT MODE : OFF

• DISTANCE : FL/FR : 10ft

: C : 10ft

: RS/LS : 5ft

: SW : 10ft

• FRONT SP. : LARGE

• CENTER SP. : NORMAL

• SURROUND SP. : NORMAL/WIRED

• SUB WOOFER : ON

• SW Re-Mix : OFF

• INPUT LEVEL : 0dB

• CH. LEVEL : 0dB

• TONE BASS : 0dB

• TONE TREBLE : 0dB

• TUNING MODE : AUTO

• PRESET MEMORY : TEST MEMORY FRE-

QUENCY (Same value with KR-V999D/1090VR)

• LAST BAND : FM

• FM LAST FREQUENCY : 87.5MHz

• AM LAST FREQUENCY : 531kHz (CH. SP 9kHz)

: 530kHz (CH. SP 10kHz)

• LAST P. ch : [- -ch]

1-2 The initial setting

While pressing POWER key, plug the AC power cord into

an AC outlet (K,P type) or turn on the AC POWER

switch.

3. TEST MODE

[setting method]

While pressing INPUT SELECTOR key, plug the AC

power cord into an AC outlet (K, P type) or turn on the

AC POWER switch. When a set is set up in test mode

condition a set becomes the following condition.

Automatic POWER ON. All indicator tube (FL) and

CLIP INDICATOR LED are lighted. The other LED are

flashed.

A backup at the thing except ON/OFF of POWER is

initialized.

[cancel method]

The power supply is turned off.

2. Condition by the destination or model

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KRF-V7772D/VR-3080

CIRCUIT DESCRIPTION

(X08)IC16 (X08)IC15

(X08)IC26 (X09)IC5

(X08)IC36 (X09)IC4

(X08)IC42

(X08)S91-96 (X08)S97 (X08)IC71 (X08)IC3

(X08)IC91 (X08)IC51

(X09)ED1

(X09)K2-5

(X05)

(X08)J81

(X08)IC72 (X08) (X08)A91 (X08)J84

MAIN UCOM

µPD784214GF-527

TACT KEY ROTARY-

ENCODER

FLDRIVER

uPD780204

DESTYINA

FL TI

ON SW

LCD REMOTE

TRANSMIT IC

VOLUME IC

TC9412

VOLUME IC

TC9412

VOLUME IC

TC9412

SELECTOR IC

TC9162

SELECTOR IC

NJU7312AL

SELECTOR IC

NJU7313AL TONE CONTROL IC

TC9184

CODEC

CS4226

DSP

YSS912

SP.RELAY

MUTETUNERUNIT

IR RECEIVER

DESTINATION IRREMOTE IR RECEIVER

SYSTEM

CONTROL

uPD17215

4. Main microprocessor: uPD784214GF-527(X08: IC71)

4-1 Microprocessor periphery block diagram

Push key INPUT SELECTOR SP A SP B MUTE DISPLAY MODE

TUNER STEREO P. CALL

UP P. CALL

DOWN

ATT

OFF ON FM

AUTO/STEREO MANUAL/MONO

(DOLBY DIGITAL LED : OFF ON)

(Press the key for 2 secs)

CD1 STEREO TONE (TUNED)

+10 (light on) OFF (light off)

ANALOG DIGITAL

MD/TAPE1 STEREO

IR RECEIVER A(ON) OFF

VIDEO1 PRO LOGIC

VIDEO2 3 STEREO

DISPLAY VIDEO3 STEREO

VIDEO4 DSP

ARENA JAZZ CLUB

THEATER STADIUM

CATHEDRAL

AV AUX STEREO TAPE2

OFF ON

PHONO STEREO INPUT LEVEL

0dB -3dB -6dB

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KRF-V7772D/VR-3080

CIRCUIT DESCRIPTION

Pin No. Name I/O Connect Description

1-8 REM_D0-D7 O P.D. LCD REMOTE DATA OUT-7

9 VDD - - +5V

10-13 TSW3-0 I - TUNER DESTINATION SWITCH3-0

14 ENC_A I - VOLUME ENCODER INPUT A

15 ENC_B I - VOLUME ENCODER INPUT B

16 - I P.D. Not used

17 T_MUTE O P.U. TUNER MUTE

18 PLL_CLK O P.D. PLL(LC72131) CLOCK

19 PLL_DATA O P.D. PLL(LC72131) DATA

20 PLL_DO I P.D. PLL(LC72131) DO

21 PLL_CE O P.D. PLL(LC72131) CE

22 TEST/VPP - - GND

23 PLL_SD I P.U. PLL(LC72131) SD

24 PLL_STEREO I P.U. PLL(LC72131) STEREO

25-28 WIDE_V1-4 I P.U. VIDEO1-4 S1 WIDE DETECTOR

29 WIDE_AUX I P.U. AV AUX S1 WIDE DETECTOR

30 WIDE_OUT O P.D. MONITOR OUT S1 WIDE INPUT

31 VIDEO_MUTE O P.D. VIDEO MUTE (mute on:H)

32 TONE_ST O P.D. TONE(TC9184) STROBE

33 VOL_ST O P.D. VOLUME(TC9412) STROBE

34 VOL_DATA O P.D. VOLUME(TC9412), TONE(TC9184) DATA

35 VOL_CLK O P.D. VOLUME(TC9412),TONE(TC9184)CLOCK

36 CE I P.D. CHIP ENABLE

37 VDD - - +5V

38 X2 - - 12.5MHz

39 X1 I - 12.5MHz

40 VSS - - GND

41,42 XT2,1 - - Not used

43 RESET I - RESET

44 REM0 I P.D. REMOTE CONTROLLER SIGNAL INPUT 0 (FRONT PANEL)

45 REM1 I P.D. REMOTE CONTROLLER SIGNAL INPUT 1 (IR RECEIVER)

46 CODEC_CS I P.D. CODEC(CS4226) CHIP SELECT

47 CODEC_ERR I P.D. CODEC(CS4226) ERROR DETECT

48 CODEC_AC3 I P.D. CODEC(CS4226) AC-3(DOLBY DIGITAL, DTS, MPEG DETECT

49 DSP_DTS I P.D. DSP(YSS912) DTS DETECT

50 DSP_AC3 I P.D. DSP(YSS912) AC-3 DETECT

51 AVDD - - +5V

52 AVREF0 - - GND

53 DATA_DET I P.D. DIR DATA DETECT

54 CODEC_FREQ1 I P.D. CODEC(CS4226) CHANNEL STATUS FREQ. BIT 1

55 CODEC_FREQ0 I P.D. CODEC(CS4226) CHANNEL STATUS FREQ. BIT 0

56,57 Not used I - GND

58 CODEC_AUDIO I P.D. CODEC(CS4226) non AUDIO DETECT

59 DSP_NPCM I P.D. DSP(YSS912) non PCM DETECT

60 DSP_SENC I P.D. DSP(YSS912) SURROUND ENCODE DETECT

61 AVSS - - GND

62 DSP_CS_A O P.D. DSP(YSS912) CHIP SELECT

63 DSP_CS_B O P.D. DSP(YSS912) SUB DSP CHIP SELECT

64 AVREF1 - - +5V

65 DSP_SI I P.D. DSP(YSS912), CODEC(CS4226)DATA IN

4-2 Pin description

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KRF-V7772D/VR-3080

CIRCUIT DESCRIPTION

Pin No. Name I/O Connect Description

66 DSP_SO O P.D. DSP(YSS912), CODEC(CS4226)DATA OUT

67 DSP_SCK O P.D. DSP(YSS912), CODEC(CS4226)CLOCK

68 TEXT_RX I P.D. CD TEXT UART COMMUNICATION DATA IN

69 TEXT_TX O P.D. CD TEXT UART COMMUNICATION DATA OUT

70 DSP_IC O P.D. DSP(YSS912) INITIAL CLEAR

71 FL_RST O P.D. FL DRIVER(uPD780204) RESET

72 FL_STB O P.D. FL DRIVER(uPD780204) STROBE

73 FL_DI I P.D. FL DRIVER(uPD780204) DATA IN

74 FL_DO O P.D. FL DRIVER(uPD780204) DATA OUT

75 FL_CLK O P.D. FL DRIVER(uPD780204) CLOCK

76 8/16 I/O - SERIAL XS8/SL16 CHANGEOVER(SL16:L)

77 S_DATA I/O P.D. SERIAL DATA

78 S_BUSY I P.D. SERIAL BUSY

79 SW_MUTE O P.D. SUBWOOFER MUTE

80 ATT-20dB O P.D. 20dB AMP CHANGEOVER (AMP on:H)

81 SUR_MUTE O P.D. SURROUND ch MUTE

82 MAIN_MUTE O P.D. MAIN MUTE

83,84 SP_A,B O P.D. SPEAKER A,B RELAY

85 SP_CS O P.D. CENTER,SURROUND SPEAKER RELAY

86 POWER O P.D. POWER RELAY

87 SECOND O P.D. POWER RELAY 2

88 I_PROT I P.D. PROTECTION CURRENT DETECT

89 V_PROT I P.D. PROTECTION VOLTAGE DETECT

90 IR_RCV I - IR RECEIVER DISTINCTION(IR RECEIVER EXIST:H)

91 SEL_CLK O P.D. SELECTOR(NJU7312,NJU7313,TC9162) CLOCK

92 SEL_DATA O P.D. SELECTOR(NJU7312,NJU7313,TC9162) DATA

93 SEL_ST O P.D. SELECTOR(NJU7312,NJU7313,TC9162) STROBE

94 IN_ATT3 O P.D. INPUT ATTENUATOR -3dB

95 IN_ATT6 O P.D. INPUT ATTENUATOR -6dB

96 TAPE2_LED O P.D. TAPE2 LED

97 REM_RWR I P.D. LCD REMOTE RWR

98 REM_ENB I P.D. LCD REMOTE ENABLE

99 REM_REQ O P.D. LCD REMOTE REQUEST

100 VSS - - GND

KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 18

TEL 13942296513 QQ 376315150 892498299

TC9162AF(X08:IC15) (1:H , 0:L)

PIN No.(L ch) 2 3 5689

PIN No.(R ch) 27 26 24 23 21 20

SW No. (L.R ch) L1,R1 L2,R2 L3,R3 L4,R4 L5,R5 L6,R6

TONE on 1 0

TONE o ff 0 1

SPEAKERS B on 1 0

SPEAKERS B o ff 0 1

ANALOG THROUGH 1 0

D/ A OUT (LOW BOOS T on *1) 0 1

D/ A OUT (LOW BOOS T o f f) 0 0

L7,R7

*1: SW off

NJU7313AL(X09:IC4), NJU7312AL (X09:IC5) (1:H , 0:L)

NJU7313AL NJU7312AL *3

PIN No.(Lch) 2 3 4 5 7 8 10 11 2 3 4 6 7 8

PIN No.(Rch) 27 26 25 24 22 21 19 18 27 26 25 23 22 21

SW No. (Lch) L1 L2 L3 L4 L5 L6 L8 L9 L1 L2 L3 L4 L5 L6

SW No.(Rch) R1 R2 R3 R4 R5 R6 R7 R8 R1 R2 R3 R4 R5 R6

*1 TUNER 1 0 0 0 0 0 1 1 1 0 0 0

CD1 000010 111000

MD/TAPE1 000100 011000

VIDEO1 0 0 0 0 0 0 1 1 0 0 1 0

VIDEO2 0 0 0 0 0 0 1 1 1 0 0 1

VIDEO3 0 0 0 0 0 0 1 1 1 0 0 0

VIDEO4 0 0 0 0 0 0 1 1 1 0 0 0

AVAUX 000000 111100

PHONO 0 1 0 0 0 0 1 1 1 0 0 0

CD2 /TAPE2 o ff 0 1

CD2 /TAPE2 on 1 0

*2 00100000111000

10 11

19 18

L7 L8

R7 R8

KRF-V7772D/VR-3080

CIRCUIT DESCRIPTION

4-3 Circuit control

(a) Selector IC

(b) Selector IC

(VIDEO SELECTOR, DIGITAL/ANALOG INPUT DISTINCTION) (1:H , 0:L)

PIN No. 32 33 34 35 36 37 38

P0 P1 P2 P3 P4 P5 P6

VIDEO1 0 0 0 0 0 0

VIDEO2 1 0 1 0 0 0

VIDEO3 1 1 1 1 0 0

VIDEO4 0 1 0 1 0 0

AVAUX11111 0

DIGI TAL IN 00

ANALOG IN 10

*1: ANALOG INPUT or DIGITAL INPUT with except STEREO mode

*2: DIGITAL INPUT with STEREO mode

*3: CD2/TAPE2 MONITOR is set CD2 position and L2,R2(REC OUT of CD2/TAPE2) of NJU7312AL is always

used by '0'.

KRF-V7772D(K)COVER1,1( 99.10.2910:11AM y[W 19

TEL 13942296513 QQ 376315150 892498299

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