Kenwood KRFV-7771-D, KRFV-8881-D, VR-2080, VR-2090 Service manual

SYSTEM

CONTROL

FRONT SPEAKERS

(6-16 Ω)

CENTER
SPEAKER
(6-16 Ω)

SURROUND SPEAKERS

DIGITAL IN

CD1

COAXIAL

VIDEO 4
COAXIAL

VIDEO 3
OPTICAL

VIDEO 2
OPTICAL

SL 16 XS 8

(

SL 16

)

(

XS 8

)

(

6-16 Ω

)

OPTICAL

DIGITAL OUT

SWITCHED

L

R

A

L

R

L

C

R

B

SL 16
TEXT

IR
RECEIVER
IN

RELAY
CONTROL

IR
OUT
LCD

REMOTE

IR REPEATER OUT

TV

ON/OFF

SENSOR

L

R

R

R

L

R

ANTENNA

AM

-FM 75Ω

GND

CD1

PHONO

MD/
TAPE 1

REC
OUT

PLAY
IN

REC
OUT

PLAY
IN

PLAY
IN

PLAY
IN

CD2 /
TAPE 2
MONITOR

MONITOR
OUT

SURROUND

CENTER

SUB
WOOFER

L

L

R

VIDEO

S VIDEO

VIDEO

SECOND ROOM PRE OUT

PRE OUT

AUDIO

VIDEO 3

VIDEO 4

PLAY
IN

VIDEO 2

VIDEO 1

L

R

AUDIO

PLAY
IN

REC
OUT

+

-

AUDIO

PHONES

INPUT SELECTOR

VOLUME

DTS

DOLBY DIGITAL

CLIP INDICATOR

POWER

ON/STANDBY

A

B

SPEAKERS

MUTE

DOWN UP

DISPLAY MODE

S VIDEO

V L - AUDIO - R

CD2 / TAPE2

MONITOR

ON OFF

AV AUX

AUDIO VIDEO SURROUND RECEIVER

KRF-V7771D/VR-2080
KRF-V8881D/VR-2090

SERVICE MANUAL

© 1998-5/B51-5426-00 (K/K) 1796

Indicator
(B12-0326-04)

Knob*
(K27-)

Lock
terminal board
(E70-0052-05)

Panel*
(A60-)

Knob*
(K29 -)

Phono jack
(E63-1008-05)

Phono jack
(E63-0133-15)

Front glass
(B10-2451-03)

Phone jack
(E11-0271-05)

Phono jack
(E63-1005-05)

Indicator
(B12-0333-04)

Knob*

Front glass

(K29-)

(B10-2418-03)

Phono jack
(E63-1028-05)

Oscillating module
(W02-1114-05)

Knob*
(K29-)

Knob*
(K29-)

Video cylindrical receptacle*
(E56-)

Miniature phone jack
(E11-0374-05)x2

Slide switch
(S62-0034-05)

Miniature phone jack
(E11-0373-05)x2

Phono jack
(E63-1030-05)

Indicator
(B12-0303-24)

Power cord bushing
(J42-0083-05)

AC outlet*
(E03-)

Phono jack
(E63-0200-05)

Phono jack
(E63-0136-15)x2

Phono jack
(E63-0139-15)x2

Optical receiving module
(W02-1181-05)x2

Video cylindrical receptacle
(E56-0011-05)x2

Phono jack
(E63-0162-05)x2

Miniature phone jack
(E11-0360-05)

Screw terminal board
(E70-0095-05)

Miniature phone jack
(E11-0291-05)

* Refer to parts list on page 60.

Screw
terminal board
(E70-0096-05)

AC power cord*
(E30-)

FM
(T90-0835-05)

indoor antenna (1)

Remote
(A70-1191-05)

(RC-R0907)
Battery cover(A09-0378-08)

control unit (1)

Loop antenna stand (1)

Batteries(R6/AA) (4)

AM loop antenna (1) (T90-0833-05)

(J19-3645-05)

Check that the following accessories are present.

* AC

(E03-0115-05)

plug adaptor (1)

*Use to adapt the plug on the power cord

to the shape of the wall outlet. (Accessory
only for regions where use is necessary.)

KRF-V7771D/V8881D/VR-2080/2090

How to reset the microcomputer

The microcomputer may malfunction (impossibility of operation,
erroneous display, etc.) when the power cord is unplugged and
plugged in again while the unit is in ON mode with the

key
pressed or due to other external causes. In this case, execute the
procedure on the right to reset the microcomputer and return the
unit to the normal condition.

1 Unplug the power cord from the wall outlet.
2 While holding the

(ON/STANDBY) key depressed, plug the

power cord into the wall outlet again.

÷ Resetting the microcomputer clears the memory you entered and

returns it to the initial condition when the unit left the factory.

U.S.A. and Canada

1 With the power cord plugged in, turn the POWER key OFF.
2 Whill holding down the ON/STANDBY key, press POWER key.

Expect for U.S.A. and Canada

Please note that the following items will be deleted from
this unit’s memory if the power cord is disconnected
from the AC outlet for approximately three days.

Memory backup function

÷ The frequency setting is cleared and 87.5 MHz is selected.
÷ The preset station memory is cleared.
÷ The surround setting is cleared and reset to the initial condition.

÷ The input selection is cleared and the “Tuner” input is selected.
÷ The volume setting is cleared and the volume is set to “-66 dB”.
÷ The receiving band setting is cleared and the “FM” band is

selected.

CONTENTS / ACCESSORIES / CAUTIONS

Contents

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

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

DISASSEMBLY FOR REPAIR.....................................5

BLOCK DIAGRAM.......................................................6

CIRCUIT DESCRIPTION.............................................9

ADJUSTMENT.......................................................... 17

Accessories

WIRING DIAGRAM....................................................19

PC BOARD ................................................................23

SCHEMATIC DIAGRAM............................................31

EXPLODED VIEW .....................................................59

PARTS LIST...............................................................60

SPECIFICATIONS.....................................................79

Cautions

2

PHONES

INPUT SELECTOR

VOLUME

DTS

DOLBY DIGITAL

CLIP INDICATOR

POWER

ON/STANDBY

A

B

SPEAKERS

MUTE

DOWN UP

DISPLAY MODE

S VIDEO

V L - AUDIO - R

CD2 / TAPE2

MONITOR

3 4 @8

65 7 # $ ^% *&

0

9

!

ON/STANDBY

POWER

ON OFF

21

AV AUX

ST.

TUNED

MUTE

STANDBY indication

1POWER key

(U.S.A., U.S.Military and Canada)
Press to switch power ON and OFF.

2POWER key

(Except for U.S.A., U.S.Military and Canada)
(China :

POWER)

Press to switch the main power ON and OFF.

3ON/STANDBY key

(Except for U.S.A., U.S.Military and Canada)
Press to switch the power mode between
STANDBY and ON.

4STANDBY indicator

Lights in STANDBY mode.

5RC sensor

Receives signals transmitted from the re­mote control unit.

6PHONES jack

Use for listening audio through headphones.

7SPEAKERS keys

Press each key to switch the SPEAKERS A or
SPEAKERS B ON and OFF.

Stereo indicator

MUTE indicator

TUNED indicator

Multi-mode display

While standby indicator is indicated, a small amount of power is supplied to the system to back up the memory. In this mode, the system can be
turned ON by remote control.

Display

8 Indicators

CLIP INDICATOR :

Lights when the input is clipped during
analog to digital signal conversion.

DOLBY DIGITAL :

Lights when Dolby Digital is activated.

DTS :

Lights when the DTS is activated.

9 MUTE key

Press to mute the audio temporarily.

0 RC transmitter

Sends signals to the remote control unit.

! Indicator

Lights when signal is input from or output to
the remote control unit.

@ VOLUME control knob

Rotate to adjust the volume.

# S VIDEO input jack

(Except for the VR-2080 or the KRF-V7771D
for the U.S. Military destination)
Connect the S VIDEO output jack of an AV
component.

$VIDEO input jack

Connect the composite video output (RCA)
jack of an AV component.

%AUDIO (L, R) input jacks

Connect the audio output (RCA) jacks of an AV
component.

^CD2/TAPE2 MONITOR indicator

Lights when the CD2/Tape2 (Monitor) input is
used.

&DISPLAY MODE key

Press to switch the display on the main unit.

*INPUT SELECTOR key

Press to switch the input as shown below.
TUNER
CD1
MD/Tape1
VIDEO1
VIDEO2
VIDEO3
VIDEO4
AV AUX
PHONO

KRF-V7771D/V8881D/VR-2080/2090

CONTROLS

3

ON/STANDBY

MUTE

VOLUME

ENTER

Setup Surround

SP Level

Surr.SP Type

SP Distance

SP Selection

Tuner

CD1

Video2

Video3 Video4

Video1

TV1

Phono

TV2

CD2

MD/

Tape1

CD2/
Tape2

Input
Digital

Input
Analog

AV AUX

Macro

Remote
Mode

Main
Menu

CONFIRM

23

¶

•

ª

£

⁄

)

¡

(º¢

1

6547890!@#$

%^

& * ∞ §

™

RC : Infrared system

Perform “Model Type Setup”
of the RC before using it.
The following menu display ap­pears after the batteries are
loaded for the first time.

Controls and indicators

The Remote Control unit provided with the Receiver can also control KENWOOD MD recorder, cassette decks, CD player, DVD
player and LD player which are connected to it through system control cords. For details of the controllable functions, refer to
the instruction manuals of these components.

The displayed icons are variable depending of the “Model Type Setup” for
matching specifications with the Reciever which uses the RC unit and “Setup” for
matching specifications with connected source component.

1Segment screen

The fixed icons are displayed in
this area.

2TV1 icon

Select to display the TV1 control
screen.

3Main Menu icon

Select to display the Main Menu
screen.

4TV2 icon

Select to display the TV2 control
screen.

5Phono icon

Select to select the PHONO in­put.

6Video1 icon

Select to control Video1.

7CD1 icon

Select to control CD1.

8Video2 icon

Select to control Video2.

9CD2 icon

Select to control CD2.
(Room B only)

0Video3 icon

Select to control Video3.

! Tuner icon

Select to control Tuner.

@ Video4icon

Select to control Video4.

# MD/Tape1 icon

Select to control MD or Tape1.

$ CD2/Tape2 icon

Select to monitor the CD2/Tape2
input. (Room A only)

% AV AUX icon

Select to select the AV AUX in­put.

^ Input Digital icon

Select to play a digital input or to
switch between Auto and Manual.

& Macro icon

Select to control Macro.

* Input Analog icon

Select to play an analog input.

( Remote Mode icon

Select to switch the remote con­trol operation mode without
changing the selected input.

Segment screen

Operation keysMenu screen

)Menu screen

Control key icons and con­trol levels are displayed in
this area.

¡Status display

The example in the illus­tration shows the “Setup
Surround” status.

™SP Selection icon

Select to set up the speak­ers.

£Return icon

Select to return to the pre­vious menu screen.

¢Status display

Shows the communication
status.

∞Joy stick key

This key is used to select an
icon. This key can be controlled
in 4 directions.

§ENTER key

Press to enter the selection of
an icon.

¶VOLUME (up) control key

Press to increase the volume.

•VOLUME (down) control
key

Press to decrease the volume.

ªCONFIRM key

Press to select the currently
displayed items.

ºMUTE key

Press to mute the audio
temporarily.

⁄ (ON/STANDBY) key

Press to turn this unit and the
components connected to it
through system cords between
ON and STANDBY modes.

KRF-V7771D/V8881D/VR-2080/2090

CONTROLS

Note

Note

Model

Type Setu

Model 1
Model 2
Model 3

p

4

6

6

3

4

4

9

9

3

3

2

11

12

1

4

3

5

x2

9

x5

8

x2

3

x2

7

13

13

13

14

14

15

10

1

2

2

2

1

x3

2

x3

2

2

x2

x5

2

x2

2

3

3

3

3

1

3

x29

DISASSEMBLY FOR REPAIR

Fig. 1

[Check the vertical PCB]

1. (Exist bottom plate) Remove the hook of rear
panel(1).

2. Remove the 29(Exist bottom plate: 34)
screws(2), then remove the rear panel.

3. Connect the GND of the phono terminal, the
GND of antenna shield board,the GND of
coax., the GND of system control shield
board, the GND of SP terminal shield board
and the chassis with 5 wires connected alli­gator chips(3).

KRF-V7771D/V8881D/VR-2080/2090

[Remove the bottom plate.]

Make use of the changing final transistor etc.

1. Remove the 19 screws (1, 2) and PCB support, then

remove the bottom plate.

Fig. 2

[Remove the escutcheon (operation
panel)]

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

Fig. 3

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(@).

5

(X08)

(X11)

(X11)

(X25)

IC89

IC60

VR-2090

DIGITAL

VR-2090 DIGITAL REC SEL.

IC71

OUT

DIGITAL

OPTICAL

D-SEL2

D-SEL1

MAX:1.0Vrms

TC9163AF-2

TC9164AF-2

OTHER

OUTIN200mV/2.2K

200mV/47K

DIRECT

FL,FR

LS,RS,

CENTER

SUB

IC78(2/2)

IC80

IC78(1/2)

IC76

80Hz LPF

21kHz LPF

21kHz LPF

21kHz LPF

IC56

IC55

IC56

IC59

IC86

IC87 IC52

IC62

AD/DA

CS4226

DRAM

DRAM

SRAM

ROM

AC-3
DSPF56009FJ88

DTS
DSPI56009FJ88

CONFIGRATION
DSPB56007FJ88

BUFFER

BUFFER

IC74

IC5

BUFFER

ROOM B
LINE

IC21(2/2)

INPUT ATT

L1,R1

L2,R2

(DIGITAL)

(ANALOG)

EQ

IC1

IC23

IC1(1/2), IC2(1/2)

IC4

IC1(2/2), IC2(2/2)

IC72

(TAPE2 MONITOR)

PHONO

2.5mV/4.7K

TUNER

IC21(1/2)

BUFFER

LINE

ROOM A

L4,R4

PHONO IN

R5

L3,R3L5,R5

L7,R7

REC OUT
BUFFER

IC3

L3

R3

R1

R4

R2

L8,R6

R3,R5

R2,R4

R1,R7

L2

TAPE1/MD IN

L4

TAPE/CD2 IN

L1

L1,R8

L2,L4

L3,L5

L6,L7

L5

L7

R8

R7

L8

BUFFER

BUFFER

BUFFER

BUFFER

VIDEO2 OPTICAL

VIDEO3 OPTICAL

CD COAXIAL

VIDEO4 COAXIAL

TAPE2 REC

VIDEO2 REC

VIDEO1 REC

TAPE1/MD REC

VIDEO4 IN

AV AUX IN

VIDEO3 IN

VIDEO2 IN

VIDEO1 IN

CD1 IN

Ω

Ω

Ω

KRF-V7771D/V8881D/VR-2080/2090

BLOCK DIAGRAM

(SIGNAL STAGE)

6

KRF-V7771D/V8881D/VR-2080/2090 KRF-V7771D/V8881D/VR-2080/2090

(X07)

(X25)

(X08)

(X25)

(X07)

(X25)

(X25)

VR-2080

RESET

SDT
MCK

MREQ

MDT

SREQ

MISO/SDA

7

6

7

.STB
.RESET

DATA IN
CLK

DATA OUT

6

5

51

7

SS

SCK/SCL

MISO/SDA

HREQ
GPI00

RESET
MOS

HREQ

MISO/SDA

HREQ
GPI00
GPI02MOS

SS

RESET

SCK/SCL

.AUDIO

.PDN

.FREQO.AC-3

.ERR.FREQ1

CDIN

CS

CCLK

CDOUT

CLK

DATA

DATA

CLK
STB

+

To FAN

SRAM
DRAM

TUNER

To
DSP

To
ANALOG

POWER

To

u-COM

To

POWER-RLY

+

+

+

SE-RLY

+

+

+

Y

Y
C

C

Y

V-MUTE

Y
C

Y
C

C

Y

Y
C

C

Y

V-MUTE

C

S1

(X08)

(u-COM STAGE)

IC53

VR-2090

27.9V/6

26.8V/6

24.5V/6

VR-2080

KRF-V8881D

KRF-V7771D

5ch SP. OUTPUT

VR-2090

VR-2090

VR-2090

AMPLIFIER

AMPLIFIER

FAN FRST/SLOW
FAN ON/OFF

DTS

AC-3

CONFIG

SBUSYSDATA

RXTX

VR-2090

TC9163AF-1IC42

SYSTEM CONTROL

(X08) J17

SYSTEM CONTROL

(X08) J16

(X08) J15

SL16 TEXT

DATA-IN

10DAC/ADC

TUNER

5(A,B,CS,TR,POWER)

2

9TUNER

3

4

3

8

RELAY

FAN

VIDEO SEL.
DIGITAL INPUT SEL.
WIDE V-MUTE
VIDEO SYNC
TONE CONT.
PROTECTION

455kHz FILTER

VR-2090 (K,P)

(X11) J13 (1/2)

IR RECEIVER IN

REPEATER OUT

(X11) J14

VR-2090 (K,P)

IC86

(X08)

6

FANFAN DRIVER

(X07) Q211-215

PARALEL

SIRIAL/

OUT LED

(X11) D21-24

IR LED REMOTE OUT

(X11) J13 (2/2)(X08) Q64-66

(X08) IC67

REMOTE

u-COM

SENSOR

TV or LIGHT

RELAY CONTROL

(X11) J12

RDS

(X08) IC68

(X08) IC69

MAIN u-COM

DATA-OUT

SUB u-COM

REMOTE SENSOR

(X25) A1

KEY MATRIX

FL

(X25) ED1

FL DRIVER

(X25) IC61

LED

PEAK LEVEL
LED

1.0/1K

PRE OUT

PRE OUT

SPEAKERS

FRONT A
L,R

PHONES

C

SL,SR

FRONT B
ROOM B SP

C

SL,SR

SW

SECOUND ROOM PRE OUT

B-MUTE

SW-MUTE

S-MUTE

A-MUTE

RELAY B

RELAY CS

RELAY A

RELAY S

BUFFER
IC31(2/2)

BUFFER
IC30

IC31(1/2)

BUFFER

K2

29dB POWER

(X25)(X07)

29dB POWER

(X25)(X07)

AMPLIFIER

29dB POWER

(X25)(X07)

K1

K1

K4

K3

MUTE

Q1-4

MUTE

Q36

MUTE

Q33,34

Q35

MUTE

SW-MUTE

B-MUTE

A-MUTE

-20dB ATT

MUTE

Q5,6

MUTE

MUTE

MUTE

MUTE

Q3,4

Q11

Q7,8

Q12

BUFFER AMP

IC22

IC26

IC24

(2/2)

IC26

(1/2)

ATT

-20dB

ATT

-20dB

ATT

-20dB

ATT

Q1,2

Q5,6

-20dB

Q9

Q10

IC28

IC53

(2/2)

IC52

IC53

(1/2)

IC51

ROOM B
IC27

IC25(2/2)

IC23

IC25(1/2)

IC21

VOLUME

VOLUME

VOLUME

VOLUME

VOLUME

L7,R7

L8,R8

L4,R4

IC44

IC43

TONE

L6,R6

L1,R1

L3,R3

L2,R2

(X11)

LOW BOOST

IC47,48

CONFIG-2

IC49

INV

VIDEO

SECOND(B)

ROOM

D82

GND

+30V

63-65,73

IC57,61,

AVR

AVR

IC82

AVR

IC83

D86

D311

EXCEPT K.P

EXCEPT K.P

(X07) T1

K5

D312

AC OUTLET

DRIVER

RELAY

Q301

K6

STROKE SW

FIL

FIL

-35V

AVR

Q311

D88

AVR

IC84

GND

+5.0V

To VIDEO 5

To VIDEO 5

AVR

Q85

AVR

Q86

AVR

Q83

AVR

Q84

D81

+17V
GND

-17V

DRIVER

RELAY

Q154

D252

D251

PRE DRIVE

GND

PRE DRIVE

GND

FINAL TR.

FINAL TR.

D301-304

GND

+5.6V

(X07) IC31

AVR

Q13

VIDEO 2

Q14

VIDEO 1

Q12

Q30

Q16

Q31

Q15

MONITOR OUT

1Vp-p/75

(S1-VIDEO)

PLAY

REC

AV AUX

(FRONT)

VIDEO 4

VIDEO 3

VIDEO 2

VIDEO 1

(VISUAL)
1Vp-p/75

(OSD)

(SECOND ROOM) IC52(1/2)

Q17

MONITOR OUT B

Q55

MONITOR OUT

IC52(2/2)

IC13
TC74HC4051AP

IC51
SN761200N

Q51

Q52

VIDEO
REC

COMP

PLAY

VIDEO

COMP

VIDEO 1

VIDEO 2

VIDEO 3

VIDEO 4

(FRONT)

AV AUX

VIDEO 1

VIDEO 2

IC11,12
SN761200Nx2

Q11

Ω

Ω

Ω
Ω

Ω

Ω

BLOCK DIAGRAM

7

8

KRF-V7771D/V8881D/VR-2080/2090

(0 : Pull down, 1 : Pull up)

TYPE BAND

Reception
frequency

Channel

IF

PLL standard

Diode sw

space

frequency

DSW3 DSW2 DSW1 DSW0

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

0001

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

0011

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

E3

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

RDS

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

0101

FM L 65.0MHz~74.0MHz 10kHz +10.7MHz 5kHz

Q1

FM H 87.5MHz~108.0MHz 50kHz +10.7MHz 5kHz

1011

RDS

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

M

K2/E1 is switched with only the setting of DSW1 (X11 : S601).

00X1

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

77 76 75 74

CIRCUIT DESCRIPTION

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

• RDS DISPLAY MODE : FREQUENCY

• DIMMER : DIMMER 1 (LIGHTEST)

• SURROUND MODE : STEREO

• DSP MODE : ARENA

• 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 FRE­QUENCY (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]

• PTY SELECT MODE : OFF

• PTY SEARCH MODE : OFF

• TP SEARCH MODE : OFF

• RDS DISPLAY MODE : FREQUENCY MODE

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.

2. Condition by the destination or model

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

9

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.

KRF-V7771D/V8881D/VR-2080/2090

(X25) IC53

MAIN u-COM

uPD78078GF-080

VIDEO IC
NJU3713D

SEL_DATA, SEL_CLK,
VIDEO_STB

(X11) IC1,2,42
(X25) IC23

SEL IC1/2
TC9162~9164

SEL_DATA, SEL_CLK,
SEL_STB1, SEL_STB2

(X11) IC21,23,25,27

VOLUME IC
TC9412/9413AP

VOL_DATA, VOL_CLK,
VOL_CE1

(X11) IC44

TONE IC
TC9184AP

VOL_DATA, VOL_CLK,
VOL_CE2

(X11) (X25)

REMOCON

REMOCON_IN1 (FRONT PANEL)
REMOCON_IN2 (REPEATER)

(X08)
IC68

TUNER/RDS
SAA6579

RDS_DAT, RDS_CLK,
RDS_SLEVEL, T_MUTE,
SD, STEREO

(X11)
IC602

TUNER PLL IC
LC72131

PLL_CLK, PLL_DATA,
PLL_CE, PLL_DO

MEGA CHANGER
(CD-0000M)

UART_RXD, UART_TXD,

(X08) IC66

SUB u-COM
uPD78058GC

SUB_RESET, SDT, MOT,
MCK, MREQ, SREQ

(X25) IC61

FL DRIVER

FL_DOUT, FL_DIN,
FL_CLK, FL_STB,
DPU_RST

SERIAL

SDATA, SBUSY

(X07) K1~6
(X25) K1

RELAY

RELAY_A, RELAY_B,
RELAY_CS, RELAY_TR,
RELAY_POWER, EXT_OUT
RELAY_MULTI

DESTINATION

999_888, 8_16, TSW_B,
TSW_1, TSW_2,
TSW_3 (CH, SP)

(X11) S1

ENCODER

ENC_VOL1, ENC_VOL2

(X08) IC67

REMOCON COMMUNICATION IC

SMK_REQ, SMK_ENB, SMK_RWR, SMK_D0,
SMK_D1, SMK_D2, SMK_D3, SMK_D4, SMK_D5,
SMK_D6, SMK_D7

MUTE

MUTE_A, MUTE_B,
SW_MUTE, -20dB_ATT,
VIDEO_MUTE, SCH_MUTE

(X25) IC 90

PERFECT MACRO
POWER DETECT

TU_PDET, U_PDET,
USEL_CTLA, USEL_CTLB
USEL_TR

(X08) IC60,71,89

OTHERS
TC74HC153AF

PROTECTION1,
PROTECTION2, FAN1,
FAN2, FAN3, DIN_1, DIN_2

Push key INPUT SELECTOR SP A S P B MUTE DISPLAY MODE

TUNER STEREO

P. CALLUPP. CALL

DOWN

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

CIRCUIT DESCRIPTION

ATT

OFF ON FM

4. Main microprocessor uPD78078GF-080 (X08 : IC69)

4-1 Microprocessor periphery block diagram

10

KRF-V7771D/V8881D/VR-2080/2090

CIRCUIT DESCRIPTION

4-2 Pin description

Pin No. Pin Name I/O Connect Description

1 VOL_STB O PD VOLUME IC CE (TC9412AP/TC9413AP)
2 VOL_CLK O PD VOLUME IC CLOCK (TC9412AP/TC9413AP)

TONE IC CLOCK (TC9184AP)

3 VOL_DATA O PD VOLUME IC DATA (TC9412AP/TC9413AP)

TONE IC DATA (TC9184AP)
4 SEL_STB1 O PD ANALOG SW. STROBE (NJU731x)
5 SEL_STB2 O PD ANALOG SW. STROBE (NJU7311-NJU7313)
6 VIDEO_STB O PD VIDEO IC STROBE (NJU3713)
7 SEL_CLK O PD ANALOG SW. CLOCK (NJU7311-NJU7313)

VIDEO IC CLOCK (NJU3713D)
8 SEL_DATA O PD ANALOG SW. DATA (NJU7311-NJU7313)

VIDEO IC DATA (NJU3713D)
9 – – PD NO USED

10, 11 X2, 1 – – MAIN CLOCK 4.19MHz (CERAMICS)

12 Vdd – +5V +5V

13, 14 XT2, 1 – OPEN NO USED

15 RESET I VDD uCOM RESET
16 REMOCON_IN1 I – FRONT PANEL REMOCON
17 REMOCON_IN2 I – EXTERNAL REMOCON
18 RDS_DATA I PD RDS DATA (SAA6579)
19 RDS_CLK I PD RDS CLOCK (SAA6579)

20, 21 NC I PD NO USED

22 CE I – BACK UP CE
23 AVdd – VDD +5V
24 AVrefo I VDD A/D POWER SUPPLY
25 RDS_SLEVEL I PD RDS SLEVEL (SAA6579)
26 T_MUTE O PD TUNER MUTE
27 PLL_CLK O PD PLL IC CLOCK (LC73131)
28 PLL_DATA O PD PLL IC DATA (LC72131)
29 PLL_CE O PD PLL IC CE (LC72131)
30 SD I PU SD INPUT
31 STEREO I PU STEREO INPUT
32 PLL_DO I PD PLL IC LC72131 DO (LC72131)
33 AVss – VSS GND
34 SUB_RESET O PD SUB uCOM RESET (uPD78058GC-A74)
35 V_PDET I PU PERFECT MACRO VIDEO POWER DETECT
36 AVref1 I VDD +5V
37 UART_RXD I PD MEGA CHANGER CD DATA RECEIVE

POWER LINE REMOCON CODE RECEIVE

38 UART_TXD O PD MEGA CHANGER CD DATA TRANSMIT

POWER LINE REMOCON CODE TRANSMIT

39 VSEL_TR O PD PERFECT MACRO VIDEO SELECTOR POWER SUPPLY SW. Tr
40 Vss – GND GND
41 SDT I PD uCOM-uCOM COMMUNICATION SLAVE DATA

(uPD78058GC-A74)

42 MDT O PD uCOM-uCOM COMMUNICATION MASTER DATA

(uPD78058GC-A74)

43 MCK O PD uCOM-uCOM COMMUNICATION MASTER CLOCK

(uPD78058GC-A74)

44 MREQ O PD uCOM-uCOM COMMUNICATION MASTER REQUEST

(uPD78058GC-A74)

11

KRF-V7771D/V8881D/VR-2080/2090

CIRCUIT DESCRIPTION

Pin No. Pin Name I/O Connect Description

45 SREQ I PD uCOM-uCOM COMMUNICATION SLAVE REQUEST

(uPD78058GC-A74)
46 FL_DOUT I PD FL DRIVER DATA IN
47 FL_DIN O PD FL DRIVER DATA OUT
48 FL_CLK O PD FL DRIVER CLOCK
49 FL_STB O PD FL DRIVER STROBE
50 VSEL_CTLA O PD PERFECT MACRO VIDEO SELECTOR CONTROL A
51 VSEL_CTLB O PD PERFECT MACRO VIDEO SELECTOR CONTROL B
52 FAN_1 I PD FAN DETECT 1
53 FAN_2 I PD FAN DETECT 2
54 FAN_3 I PD FAN DETECT 3
55 SDATA I/O – SERIAL DATA
56 SBUSY I/O – SERIAL BUSY
57 RELAY_A O PD SPEAKER A RELAY
58 RELAY_B O PD SPEAKER B RELAY
59 RELAY_CS O PD CENTER/SURROUND SPEAKER RELAY
60 RELAY_TR O PD TRANS RELAY
61 RELAY_POWER O PD POWER RELAY
62 EXT_OUT O PD EXTERNAL OUT
63 NC O PD NO USED
64 DRV_RST O PD FL DRIVER RESET

65 TV_PDET I PD PERFECT MACRO TV POWER DETECT

66 999_888 I – TYPE SELECT H : VR-2090 L : VR-2080
67 8_16 I – SERIAL SELECT L : SERIAL 16bit H : SERIAL 8bit

68, 69 ENC_VOL2, 1 I PD VOLUME ENCODER IN

70 PROTECTION1 I PD PROTECT DETECT
71 Vss – GND GND
72 PROTECTION2 I PD PROTECT DETECT
73 NC I PD NO USED

74~76 TSW_0~2 I – TUNER SIMUKE SWITCH 0~2

77 TSW_3 (CH. SP) I PD TUNER SIMUKE SWITCH 3 (CHANNEL SPACE)
78 NC I – NO USED
79 RELAY_MULTI O PD SP B SIGNAL OUTPUT ROOM A : L ROOM B : H

80, 81 DIN_1, 2 O PD DIGITAL REC SELECT (TC74HC153AF)

82 DIN_STB O PD DIGITAL REC SELECT STROBE (TC74HC153AF)
83 SMK_REQ O PD REMOCON DATA TRANSMIT IC REQ
84 SMK_ENB I PD REMOCON DATA TRANSMIT IC ENB
85 SMK_RWR I PD REMOCON DATA TRANSMIT IC RWR

86~93 SMK_D0~D7 O PD REMOCON DATA TRANSMIT IC D0~D7

94 MUTE_A O PU ROOM A MUTE
95 MUTE_B O PU ROOM B MUTE
96 SW_MUTE O PU SWch MUTE
97 -20dB_ATT O PU -20dB ATTENUATER
98 VIDEO_MUTE O PD VIDEO MUTE
99 SCH_MUTE O PD Sch MUTE

100 TONE_STB O PD TONE IC CE (TC9184AP)

12

INPUT

MODE

TAPE

MONITOR

SURROUND

MODE

INPUT

SELECTOR

(X25 : IC23) TC9162 (X11 : IC4) TC9163 (X11 : IC1, 2) TC9164

SW1 SW2 SW3 SW4 SW5 SW6 SW7 L1 L2 L3 L4 L5 L6 L7 L8 R1 R2 R3 R4 R5 R6 R7 R8 L1 L2 L3 L4 L5 L6 L7 L8 R1 R2 R3 R4 R5 R6 R7 R8

ANALOG

Pin No. 2 ™3 ¡5 _6 )8 *9 &- %2346780-™¡+)(*^%2345780-™¡+_(*^%

TUNER O

MD/TAPE1 O

CD1 O

CD2 O

VIDEO1 OO

VIDEO2 OO

VIDEO3 OO

VIDEO4 OO

ANALOG

PHONO O O OO OO

TUNER O O O OO OO

MD/TAPE1 O OO OO

CD1 O OOO OO

VIDEO1 O O O O O O

VIDEO2 O O O OO O

VIDEO3 O O O OO OO

VIDEO4 O O O O O O O

AV AUX O OOO OO

DIGITAL

TAPE2

OFF

TAPE2

ON

STEREO

MD/TAPE1 OO OOO

CD1 OOO O OO

VIDEO1 OOO O O

VIDEO2 OOO O O

VIDEO3 OOO O OO

VIDEO4 OOO O OO

EXCEPT

STEREO

MD/TAPE1 O OO O

CD1 O OOO OO

VIDEO1 O O O OO OO

VIDEO2 O O O OO OO

VIDEO3 O O O OO OO

VIDEO4 O O O O O O O

ANALOG

PHONO O OO O OO

TUNER O O OO O OO

MD/TAPE1 OOOOO

CD1 OOOOOO

VIDEO1 O O O O O O

VIDEO2 O O OO O O

VIDEO3 O O OO O OO

VIDEO4 O O O O O O O

AV AUX OOO O OO

DIGITAL

STEREO

MD/TAPE1 O

CD1 O

VIDEO1 O

VIDEO2 O

VIDEO3 O

VIDEO4 O

EXCEPT

STEREO

MD/TAPE1 O

CD1 O

VIDEO1 O

VIDEO2 O

VIDEO3 O

VIDEO4 O

CD 2 is set CD2/TAPE 2 : (X11) IC1, 2 - pin OFF

ROOM A (TAPE 2 is set with CD 2/TAPE 2 SELECTOR)

ROOM B

CIRCUIT DESCRIPTION

5. AUDIO INPUT SELECTOR CONTROL

KRF-V7771D/V8881D/VR-2080/2090

13

KRF-V7771D/V8881D/VR-2080/2090

MAIN u-COM
uPD78078GF-080

(X08)

IC62
A IN
D IN

A OUT

CDDEC
CS4226

(X08)
IC52

DTS DECODER

DSP5609

CLOCK

DATA

(X08) IC56

Ÿ DECODER

DSP56009

(X08)
IC92

TC74HC

123A

DATA

DATA

CLOCK

DATA

DATA

IC89

DATA

CLOCK

CLOCK

CLOCK

(X08)
IC60

TC74HC
153A

TC74HC
153A

(X08)
IC59

CONFIGU­RATION

DSP56007

(X08) IC66

SUB u-COM

uPD78058GC

–A74

VIDEO WIDE DETECT

VIDEO WIDE CHANGEOVER

CLIP INDICATOR CONTROL

CONTROL SIGNAL

AUDIO DATA, CLOCK

(X08) IC69

CIRCUIT DESCRIPTION

6. Sub microprocessor uPD78058GC-A74 (X08 : IC66)

6-1 Microprocessor periphery block diagram

14

KRF-V7771D/V8881D/VR-2080/2090

CIRCUIT DESCRIPTION

6-2 Pin description

Pin No. Pin Name I/O Connect Description

1 DSP1_RESET O P. D. DSP IC1 (AC-3) RESET
2 DSP3_SS O P. U. DSP IC3 (THX) SLAVE SELECT
3 DSP3_HREQ I P. D. DSP IC3 (THX) HOST REQUEST
4 – – GND –
5 DSP3_RESET O P. D. DSP IC3 (THX) RESET
6 N. C. I P. D. –
7 AVref1 – +5V –
8 DSP3_MI I P. D. DSP IC3 (THX) MASTER IN SLAVE OUT

9 DSP3_MO O P. D. DSP IC3 (THX) MASTER OUT SLAVE IN
10 DSP3_CK O P. D. DSP IC3 (THX) CLOCK
11 MDT I P. D. Microprocessor communication MASTER DATA
12 SDT O P. D. Microprocessor communication SLAVE DATA
13 MCK I P. D. Microprocessor communication MASTER CLOCK
14 MREQ I P. D. Microprocessor communication MASTER REQUEST
15 SREQ O P. D. Microprocessor communication SLAVE REQUEST
16 DSP1_MI/DSP2_MI I P. D. DSP IC1, 2 (AC-3, DTS) MASTER IN
17 DSP1_MO/DSP2_MO O P. D. DSP IC1, 2 (AC-3, DTS) MASTER OUT
18 DSP1_CK_DSP2_CK O P. D. DSP IC1, 2 (AC-3, DTS) CLOCK

19~21 NO_MUTE_TIME0~2 I P. U. PCM NONE INPUT UNMUTE HOLD TIME SETTING

pin 19 20 21 TIME(s)

LLL 0
LLH 1
LHL 2
LHH 3

pin 19 20 21 TIME(s)

HLL 4
HLH 5
HHL 6
HHH 5

22~26 N. C. I P. U. –

27 PEAK_LEVEL O P. D. CLIP INDICATOR LED CONTROL
28 WIDE_0 O P. D. S-VIDEO WIDE/NORMAL CHANGEOVER CONTROL

(MONITOR OUT)

29~32 WIDE_I0~I3 I P. D. S-VIDEO WIDE/NORMAL DETECT0 (VIDEO4~1)

33 Vss – GND –
34 WIDE_I4 I P. D. S-VIDEO WIDE/NORMAL DETECT4 (AV AUX)

35~40 N. C. I P. D. –

41 DSP_SEL_DISABLE O P. D. DSP SELECTOR OUTPUT DISABLE (mute)
42 N. C. I P. D. –
43 SEL_ANALOG O P. D. INPUT DIGITAL/ANALOG DISTINCTION analog: L, digital: H

44~46 N. C. I P. D. –

47 SUB_MUTE O P. D. SUB MUTE CONTROL
48 N. C. I P. D. –
49 2090/2080 I P. D. 2090/2080 MODEL DISTINCTION
50 DSP_SEL1 O P. D. DSP SELECTOR TC74HC CHANGEOVER H: DTS, L: DOLBY
51 DSP_SEL2 O P. D. DSP SELECTOR TC74HC CHANGEOVER H: DTS, L: DOLBY
52 CS_OVL/ERR I P. D. CODEC OVER LEVEL/ERROR
53 CS_PDN O P. D. CODEC POWER DOWN
54 CS_FREQ1 I P. D. CODEC FS CHECK1
55 CS_FREQ0 I P. D. CODEC FS CHECK0
56 CS_CDIN O P. D. CODEC DATA OUT
57 CS_CS O P. D. CODEC CHIP SELECT
58 CS_CCLK O P. D. CODEC CLOCK
59 CS_CDOUT I P. D. CODEC DATA IN
60 RESET I – RESET
61 CS_AUDIO I P. D. CODEC AUDIO/NON-AUDIO DETECT H: DATA, L: PCM
62 CS_AC3 I P. D. CODEC AC-3 H: AC-3 DETECT
63 DSP2_DTS_DTCT I P. D. DSP IC2 (DTS) DTS DETECT H: DTS DETECT

15

KRF-V7771D/V8881D/VR-2080/2090

CIRCUIT DESCRIPTION

Pin No. Pin Name I/O Connect Description

64 DSP1_GPI0 O P. D. DSP IC1 (AC-3) DSP MODE USE SETTING PARAMETER
65 DATA_IN I P. D. DIR OUTPUT DETECT H: DIGITAL DATA IN
66 N. C. I P. D. –
67 N. C. I P. D. –
68 Vdd – +5V

69, 70 X2, 1 – – CLOCK OSCILLATOR 4.23MHz

71 IC (Vpp) – GND –
72 N. C. – OPEN –
73 P07 – – –
74 AVdd – +5V –
75 AVrefo – GND –
76 DSP2_HREQ I P. D. DSP IC2 (DTS) HOST REQUEST
77 DSP2_SS O P. U. DSP IC2 (DTS) SLAVE SELECT
78 DSP2_RESET O P. D. DSP IC2 (DTS) RESET
79 DSP1_HREQ I P. D. DSP IC1 (AC-3) HOST REQUEST
80 DSP1_SS O P. U. DSP IC1 (AC-3) SLAVE SELECT

6-3 DIR A/D & D/A CONVERTER (CODEC) CS4226KQC (X08 : IC62)

6-3-1 CODEC CS4226

Main pin description

Pin No. Pin Name Description

3 SCL/CCLK Serial communication CLOCK
4 SDA/CDOUT Serial data line CS4226 î SUB uCOM

5 ADI/CD IN Serial data line SUB uCOM î CS4226
6 ACO/CS CS4226 CHIP SELECT
7 SPI/I2C Serial control format setting
8 PDN Powerdown Pin

9 AIN3R/AUDIO audio/non-audio detect
10 AIN3L/AUTODATA Input C bit, V bit H : Signal of AC-3, MPEG, DTS
11 AIN2L/FREQ0 Channel Status Freq. Bit
12 AIN2R/FREQ1 Channel Status Freq. Bit
30 OVL/ERR Input Analog : ADC clipping indicator

Input Digital : D/PDIF error indicator

-= FREQ0/FREQ1
32kHz 44.1kHz 48kHz Reserved

FREQ1 H L L H
FREQ0 H L H L

0 AC3

AC-3/MPEG Data Stream Input Exist None

AC3, MPEG, DTS 1 0

∞ CLIP INDICATOR (X25 : D66) CONTROL

IC62 (CODEC) IC66 (Sub u-COM)

INPUT SOURCE ∞ CS_OVL_ERR ™ PEAK_LEVEL OUTPUT

DIGITAL don't care L

ANALOG L L

HH

H : LED LIGHTING

16

KRF-V7771D/V8881D/VR-2080/2090

SYSTEM
CONTROL

FRONT SPEAKERS

(6-16 Ω)

CENTER
SPEAKER
(6-16 Ω)

SURROUND SPEAKERS

DIGITAL IN

CD1

COAXIAL

VIDEO 4
COAXIAL

VIDEO 3
OPTICAL

VIDEO 2
OPTICAL

SL 16 XS 8

(

SL 16

)

(

XS 8

)

(

6-16 Ω

)

OPTICAL

DIGITAL OUT

SWITCHED

L

R

A

L

R

L

C

R

B

SL 16
TEXT

IR
RECEIVER
IN

RELAY
CONTROL

IR
OUT
LCD

REMOTE

IR REPEATER OUT

TV

ON/OFF

SENSOR

L

R

R

R

L

R

ANTENNA

AM

-FM 75Ω

GND

CD1

PHONO

MD/
TAPE 1

REC
OUT

PLAY
IN

REC
OUT

PLAY
IN

PLAY
IN

PLAY

IN
CD2 /
TAPE 2
MONITOR

MONITOR
OUT

SURROUND

CENTER

SUB
WOOFER

L

L

R

VIDEO

S VIDEO

VIDEO

SECOND ROOM PRE OUT

PRE OUT

AUDIO

VIDEO 3

VIDEO 4

PLAY

IN

VIDEO 2

VIDEO 1

L

R

AUDIO

PLAY

IN

REC

OUT

+

-

AUDIO

(A)

(B)

(C)

FM SG

FM SG

AG

MPX AG

AC voltmeter

Dummy antenna

Oscilloscope

Distortion meter

No.

ITEM

INPUT

SETTINGS

OUTPUT

SETTINGS

RECEIVER
SETTINGS

ALIGNMENT

POINTS

ALIGN FOR

FIG.

1 DISCRIMINATOR

(A)

98.0MHz 1kHz,
±75kHz dev.

70dBf (ANT. input)

Connect a

DC voltmeter

between CN12 1

and CN12 2 (X11)

MONO

98.0MHz

L604

(X11)

0V (a)

2

DISTORTION

(MONO)

(A)

98.0MHz 1kHz,

±75kHz dev. MONO

70dBf (ANT. input)

(B)

MONO

98.0MHz

L605

(X11)

Minimum

distortion

(a)

3

DISTORTION

(STEREO)

(C)

98.0MHz 1kHz,

±67.5kHz dev.

Selector : L or R Pilot

: ±7.5kHz dev.

70dBf (ANT. input)

(B)

AUTO

98.0MHz

IFT(RF

FRONTEND

: A1)

Minimum

distortion

(L or R)

(a)

4 TUNING LEVEL

(A)

98.0MHz MONO

1kHz, ±75kHz dev.

15dBf (ANT. input)

(B)

MONO

98.0MHz

VR601

(X11)

Adjust VR601

and stop at the

point where ED1

(TUNED) goes

on.

(a)

1

DISTORTION

(STEREO)

(C)

98.0MHz 1kHz,

±67.5kHz dev.

Selector : L or R,Pilot

: ±7.5kHz dev.

70dBf (ANT. input)

(B)

AUTO

98.0MHz

IFT

(TUNER UNIT

: A601)

Minimum

distortion

(L or R)

(a)

2 TUNING LEVEL

(A)

98.0MHz MONO

1kHz, ±75kHz dev.

15dBf (ANT. input)

(B)

MONO

98.0MHz

VR601

(TUNER UNIT)

Adjust VR601

and stop at the

point where

ED1 (TUNED)

goes on.

(a)

FM SECTION : Except M type SELECTOR : FM *Adjust NO.1 and NO.2 repeat.

FM SECTION :M type only SELECTOR : FM

ADJUSTMENT

SYSTEM CONNECTIONS

17

KRF-V7771D/V8881D/VR-2080/2090

No. ITEM

INPUT

SETTINGS

OUTPUT

SETTINGS

RECEIVER
SETTINGS

ALIGNMENT

POINTS

ALIGN FOR FIG.

AUDIO SECTION SPEAKER : A PREOUT : OFF PROLOGIC : ON

<1> IDLE CURRENT —

Connect a DC

voltmeter across

CN1 (each port)
1, 2 pin : L
5, 6 pin : R
3, 4 pin : SL
7, 8 pin : SR
9, 10 pin : C

(FRONT 2ch

MODE)

Volume:0

VR1(L)

VR2(R)
VR3(SL)
VR4(SR)

VR5(CENTER)

(X07-)

10mV

ADJUSTMENT

18

VR-2090

VR-2090

SURROUND UNIT

USED
VR-2090(K2,P2)

ELECTRIC UNIT

USED
(M1,Y1,C1,M2,C2) TYPE

USED
KRF-V7771D(J,M1,C1)/

KRF-V8881D(M2,C2)/
VR-2090(K2,P2)

(K2,P2) ONLY

VR-2090(K2,P2)

KRF-V8881D(C2)/

USED
KRF-V7771D(J,M1,C1)/

(X25-604X-XX) (A/7)
(X25-6133-00) (A/7)

(X25- ) (F/7)

(X08-285X-XX)
(X08-2903-XX)

(K2,P2) ONLY

(X11-3800-XX) (B/7)
(X11-3813-00) (B/7)

(X25-604X-XX) (B/7)
(X25-6133-0X) (B/7)

(X25- ) (D/7)

(X11-3800-XX) (C/7)

TUNER UNIT
(X11-3813-00) (C/7)

WH4

CN19

S1

XS8/
SL16

S601

DE-EMPHASIS

CH SPACE

WH3WH2

R1

J1

PHONO

L1

CN32WH2

VR-2090 (X25-6040-11)

KRF-V8881D (X25-6XXX-XX)

VR-2080 (X25-6040-10)

KRF-V7771D (X25-6XXX-XX)

J3

S1 VIDEO

J2

Lch

VIDEO

Rch

AV
AUX

E3

WH3

E2

WH5

CN11

KRF-V7771D (X08-2XXX-XX)

VR-2090 (X08-2850-11)

VR-2080 (X08-2850-10)

KRF-V8881D (X08-2XXX-XX)

OPTICAL

J15

J16

J17

OUT

DIGITAL

DIGITAL
IN

VIDEO2
OPTICAL

OPTICAL

VIDEO3

COAXIAL

VIDEO4

COAXIAL

CD

SL16
TEXT

SYSTEM
CONTROL

A3

A2

A1

J11

CN29

CN7

CN28CN22

CN10CN2

KRF-V8881D (X11-38XX-XX)

KRF-V7771D (X11-38XX-XX)

VR-2090 (X11-3800-11)

VR-2080 (X11-3800-10)

E18

WH4

CN27CN11

CN25 CN26

E10

WH3

E9

(AUDIO)

Rch 5

Lch 6

VIDEO 1
PLAY IN

J4

Rch 1

PLAY IN

VIDEO 2

Lch 2

Rch 3

REC OUT

VIDEO 1

Lch 4

PLAY IN

VIDEO 3

Rch 3

Lch 4

J3

Lch 2

VIDEO 4
PLAY IN

Rch 1

SECOND ROOM
PRE OUT (ROOM B)

J5

Rch 1

Lch 2

OUT

MONITOR

VIDEO 4

VIDEO 3

VIDEO 2

VIDEO 1

VR-2080 (X25-6040-10)

KRF-V7771D (X25-6XXX-XX)

KRF-V8881D (X25-6XXX-XX)

VR-2090 (X25-6040-11)

J11

(VIDEO/COMPOSITE)

VIDEO 1

1 PLAY IN

2 REC OUT

VIDEO 2

3 PLAY IN

4 REC OUT

J4

J5

PLAY IN

REC OUT

PLAY IN

1 PLAY IN

VIDEO 3

VIDEO 4
2 PLAY IN

OUT

3

MONITOR

MONI A

J7

ROOM
VIDEO

SECOND(B)

J9

CN11CN5

AM

GND

FM 75 Ω

J601

1

11

1

9

1

9

133-01C2CHINA

133-00CHINA C1

ABB.

UNIT No.

K2
P2

040-11

U.S.A.

CANADA

DESTINATION

COUNTRY

ABB.

UNIT No.

M2
C2

040-22

CHINA

COUNTRY

DESTINATION

GENERAL MARKET040-01

040-21

M1

Y1 042-91

GENERAL MARKET

PX

K

ABB.

UNIT No.

040-10

U.S.A.

COUNTRY

DESTINATION

CANADA P1

UNIT No.

DESTINATION
COUNTRY ABB.

JJAPAN

CHINA C1

200mV/47k

P1

1

115

113

131

P2CANADA

P1CANADA

903-01C2

CHINA

C2

CHINA

903-00

850-21

C1

CHINA

C1

CHINA

M1

GENERAL MARKET

850-01J

JAPAN

ABB.

PX

Y1

DESTINATION

COUNTRY

UNIT No.

852-91

ABB.COUNTRY

DESTINATION

UNIT No.

U.S.A. K2

850-11

850-10

DESTINATION

K

ABB.

U.S.A.

COUNTRY

UNIT No.

UNIT No.

DESTINATION

ABB.COUNTRY

M2

850-22

GENERAL MARKET

9

8

7

6

5

4

3

2

1

1

2

GND

OUT

VDD

3

OUT

1

3

VDD

GND

2

OUT
GND
VDD

3

2

1

19

91

1420

4120

1

1

13-00

13-00

C2CHINA

C1CHINA

ABB.

UNIT No.

M2

C2

00-21

DESTINATION

COUNTRY

GENERAL MARKET

CHINA

00-01

C1

M1

CHINA

GENERAL MARKET

J

ABB.

Y1

00-21

COUNTRY

JAPAN

DESTINATION

PX

UNIT No.

K2

ABB.COUNTRY

U.S.A.

DESTINATION

P2CANADA

00-11

UNIT No.

UNIT No.

00-10

ABB.

DESTINATION

COUNTRY

K

P1

U.S.A.

CANADA

111

41131

11341

1

9

1

9

133-01C2CHINA

133-00C1CHINA

ABB.

P1

K

UNIT No.

040-10

ABB.

Y1M1042-91

C1

J 040-01

040-21

UNIT No.

PX

COUNTRY

CANADA

U.S.A.

COUNTRY

DESTINATION

CHINA

GENERAL MARKET

JAPAN

ABB.

UNIT No.

P2

040-11

K2

M2

ABB.

UNIT No.

C2

040-22

DESTINATION

U.S.A.

CANADA

COUNTRY

COUNTRY

GENERAL MARKET

DESTINATION

CHINA

DESTINATION

151151

E601

3

4

1

2

V

V
V

V
V

V
V

V
V

V

V

V

V

VV

KRF-V7771D/V8881D/VR-2080/2090 KRF-V7771D/V8881D/VR-2080/2090

WIRING DIAGRAM

19

20

KRF-V7771D/V8881D/VR-2080/2090 KRF-V7771D/V8881D/VR-2080/2090

(K,P1,K2,P2) TYPE

VR-2090(K2,P2) ONLY

DISPLAY UNIT

POWER AMPLIFIER UNIT

EXCEPT

EXCEPT
(K,P1,K2,P2) TYPE

TONE UNIT

USED
KRF-V7771D/V8881D

(M1,Y1,M2) TYPE ONLY

(X07-) (H/8)

(X25-604X-XX) (C/7)

VR-2080/2090(K)
KRF-V7771D/V8881D(M)

(X25-6133-XX) (C/7)

(X25- ) (G/7)

USED (J,K,P1,K2,P2,C1,C2) TYPE

USED (M1,Y1,M2) TYPE

(X07- ) (E/8)

(X25-) (E/7)

(X07-294X-XX) (A/8)

(X11- ) (G/7)

(X07-) (D/8)

(X07-) (B/8)

(X07-2983-00) (A/8)

(X07-) (G/8)

(X07- ) (C/8)

(X07- ) (E/8)

(X07-) (F/8)

(X11-3800-XX) (A/7)
(X11-3813-00) (A/7)

VR-2090(K2,P2) ONLY

(X11- ) (E/7)

(X11- ) (F/7)(X11- ) (D/7)

KRF-V7771D (X07-29XX-XX)

VR-2090 (X07-2940-10)

VR-2080 (X07-2940-10)

FFC

WH10

FFC FFC

WH7

E16 E17

CN33

OUTLETS

CN8

E6

WH1

E7

TEMP.
SW
(65 C)

65 C

TS1

E14

WH12

E12

CN7

E13E11

WH11

E10

WH10

E1

WH1

CN12

WH6

E6CN11

CN10

CN51

T1

J21

PHONES

3

2

1

4

3

2

1

KRF-V8881D (X07-29XX-XX)

TEST
PIN

IDLE

CN1

SW
(105 C)

TEMP.

COOLING
FAN

TS1

105 C

POWER

S1

S2

J11

Lch

J2

+

-

Rch

+

+

-

-

SURROUND SP.

CENTER SP.

J1

FRONT SP.

B SP.

Rch

Lch

Rch

Lch

-

+

-

+

-

+

-

+

A SP.

E2

WH2

CN15

CN21

CN1CN3

CN23

CN4

CN24

KRF-V8881D (X11-38XX-XX)

KRF-V7771D (X11-38XX-XX)

VR-2090 (X11-3800-11)

VR-2080 (X11-3800-10)

4

3

PLAY IN

WOOFER

SUB

CENTER

CD1

CD2/TAPE2

REC OUT

PRE OUT

SURROUND

Rch 1

J6

Lch 2

J2

Lch 2

Rch 1

Rch 3

Lch 4

Rch 1

J1

Lch 2

Rch 3

Lch 4

Rch 5

Lch 6

MD/TAPE

PLAY IN

REC OUT

CN16

WH3

E4

E7

WH5

E8

CN17 E5

WH4

E5

CN14

WH6

CN13

REPEATER

IR

J14

OUT

LCD

IR OUT
REMOTE

IR
RECEIVER
IN
12V 20mA

5V 10mA

TV
ON/OFF

J13

SENSOR

RELAY
CONTROL
12V 20mA

J12

CN6

WH6

E8

DESTINATION

P1

ABB.

K

40-10

CANADA

COUNTRY

U.S.A.

UNIT No.

WH14

WH15

F1

F2

F3

F4

1

4

1

4

131

1
2

F6

WH25

WH26

11

9 9

1

3

1

3

3

1

3

1

3

1

151

1

15

1

15

1

1

6

6

1

29

1

29

CHINA C2

C1

CHINA

0V

0V

120V

0V

120V

(C1,C2) 220V 50Hz

(J) 100V 50/60Hz
(K,P1,K2,P2) 120V 60Hz

5:

0V

RED

WH31

WHT

WH32

5

3

1

WH27

15

13

14

17

11

12

10

23

22
21

20
19

16

18

P2

P1

6

5

4

3
2

WH17 WHT

WH16 YEL
WH18 BLK

RED

GRY

40-01JJAPAN

40-21

83-00

43-01CHINA

C1

M1GENERAL MARKET

UNIT No.

42-91Y1

ABB.COUNTRY

PX

DESTINATION

40-21

83-00

UNIT No.

43-01M2C2

ABB.COUNTRY

GENERAL MARKET

CHINA

DESTINATION

K2
P2

40-10

UNIT No.

U.S.A.

COUNTRY

DESTINATION

CANADA

ABB.

10

9
8

Cch

SRch

5

6

4

Rch

SLch

3
2
1

Lch

7

: AC100V 50/60Hz

: AC220V~ 50Hz

50/60Hz

: AC110-120V/220-240V~

: AC120V 60Hz

(J)

(C1,C2)

(M1,Y1,M2)

(K,P1,K2,P2)

BRN

WH20

WH19
YEL

BLU

ORG

BRN

WH21 YEL

WH23 WHT

110V-

220V-

120V

240V

WH28 YEL

WH29 RED

WH30 VIO

WH24 GRY

T1

F5

WW

P3

151

151

151

115

9

9

1

1

18

18

1

1

13-00

13-00

C2CHINA

C1CHINA

M2

ABB.

UNIT No.

00-21

C2CHINA

COUNTRY

DESTINATION

GENERAL MARKET

00-01

C1CHINA

JAPAN J

Y1

ABB.

M1

UNIT No.

00-21

PX

GENERAL MARKET

DESTINATION

COUNTRY

K2

ABB.

UNIT No.

00-11

P2

U.S.A.

CANADA

DESTINATION

COUNTRY

K
P1

00-10

UNIT No.

U.S.A.

COUNTRY

DESTINATION

CANADA

ABB.

9

1

1

9

1

4

1

4

1

5

5

1

115

151

13

1
3

1

3

V

V

V

V

V

V

V

V

V

V

V
V

V
VV

V

V V

V

V

V

WIRING DIAGRAM

21

22