Kenwood KRV-1070 Service manual

TAPE/MDCDPHONO

PLAY

REC OUT

VIDEO1 VIDEO3VIDEO2

PLAY

PLAYINPLAY

REC OUT

ADAPTOR

INOUT

AUDIO

SL 16 XS 8

SUB

WOOFER

SURROUND

FRONT

CENTER

AUX.6CH.INPUT SYSTEM CONTROL

SIGNAL

GND

Full Digital Decoding

TRAITR

thermally reactive advanced instantaneous transistor

AUDIO−VIDEO SURROUND RECEIVER 1070VR

PHONES

POWER

1234 567 890

STANDBY

MUTE

LEVEL INDICATOR

DIRECT MEMORY AUTO

TUNINGBAND BASS TREBLE

LEVEL CONTROL

SPEAKERS

PRO LOGIC 3 STEREO

STEREO DSP

LOUDNESS

SOURCE DIRECT

DIMMER

CENTER MODE

INPUT SELECTOR VOLUME CONTROL

VIDEO

ON/STANDBY

DOWN UP

AV AUX

AUDIO - R

MUTE

+10

D G

ECODIN

F L

ULL DIGITA

Slide switch (S31-2132-05)

Phono jack (E63-0141-15)

Phono jack (E63-0139-15)

Miniature phone jack (E11-0293-05)

Screw terminal board (E70-0049-05)

Slide switch (S62-0034-05)

Lock terminal board (E70-0065-05)

Phono jack (E63-0135-15)

Phono jack (E63-0163-05)

Phono jack (E63-0111-05)

Metallic cabinet (A01-3269-11)

AC outlet * (E03-)

AC power cord * (E30-)

Power cord bushing (J42-0083-05)

Knob(BUTTON) * (K27-2176-04)

Knob * (K29-)

Panel * (A60-)

Phone jack (E63-1002-05)

Front glass * (B10-)

Knob (K29-6247-04)

Phone jack (E11-0272-05)

Phono jack (E63-1005-05)

Lock terminal board (E70-0052-05)

AUDIO VIDEO SURROUND RECEIVER

KR-V8090/KR-V9090 1060VR/1070VR

SERVICE MANUAL

Illustration is 1070VR.

* Refer to parts list on page 36.

KENWOOD badge * (B43 -0302-04)

1060VR/1070VR/KR-V8090/KR-V9090

AUDIO

SHIFTMACRO

TVVIDEO

GUIDEREC

MUTE

VOLUMETUNING/SKIP

THEME FAVMENU

FUNCTION

SHIFT

SETUP

INFO ALT AUDTV/SAT/VID

REPEAT RANDOM+100

DISPLAY

ENT+10

LISTEN

MODE

SOUNDSUBWOOFER

231

564

897

REMOTE CONTROL UNIT

RC-R0805

4¢

BAND

P. CALL P. CALL

POWER

CONTENTS / ACCESSORIES

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

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

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

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

CIRCUIT DESCRIPTION.............................................7

ADJUSTMENT...........................................................16

Accessories

WIRING DIAGRAM....................................................17

PC BOARD ................................................................18

SCHEMATIC DIAGRAM............................................27

EXPLODED VIEW .....................................................45

PARTS LIST...............................................................46

SPECIFICATIONS.....................................................59

FM indoor antenna ........(1)

(T90-0810-05)

AM loop antenna ..........(1)

(T90-0820-05)

Loop antenna stand (1) (J19-3645-05)

Batteries (R03/AA)......... (4)

RF DEMODULATOR.....(1)

(DEM-999D)

M,C,T type only

An use model discrepancy table in of remote controller

Remote controller

Parts number Type name A70-1115-05 RC-R0805 1070VR All destinations

A70-1117-05 RC-R0605 1060VR All destinations

A70-1118-05 RC-R0606 KR-V8090 T,E,Q

Model name Destination Battery cover

KR-V9090

KR-V8090 C

Remote control unit ......(1)

(A70-1118-05): RC-R0805

Battery cover(A09-0366-08)

AC adapter ....................(1)

(E03-0115-05)

M type only

A09-0366-08

1060VR/1070VR/KR-V8090/KR-V9090

CONTROLS

Full Digital Decoding

TRAITR

thermally reactive advanced instantaneous transistor

AUDIO−VIDEO SURROUND RECEIVER 1070VR

PHONES

POWER

1234 567 890

STANDBY

MUTE

LEVEL INDICATOR

DIRECT MEMORY AUTO

TUNINGBAND BASS TREBLE

LEVEL CONTROL

SPEAKERS

PRO LOGIC 3 STEREO

STEREO DSP

LOUDNESS

SOURCE DIRECT

DIMMER

CENTER MODE

INPUT SELECTOR VOLUME CONTROL

VIDEO

ON/STANDBY

DOWN UP

AV AUX

AUDIO - R

AC-3

TP SP.

******* **;

FM AM

kHz

MHz

SURROUND 3 STEREO

DSP

LOUDNESS

M. INPUT

MEMORY

AUTO STEREO TUNED

1 2 7 8 0 !3 54 9 @

MUTE

S. DIRECT

+10

£ ¢∞§ ¶# $*&^% ) ¡(™

D G

ECODIN

F L

ULL DIGITA

Band indicators

SURROUND indicator

LOUDNESS indicator

3 STEREO indicator

S.DIRECT indicator

About the STANDBY indicator

This unit has a STANDBY indicator. When the STANDBY indicator is lit, the unit consumes a small amount of power to preserve the memory. This is called STANDBY mode. This mode also lets you turn the power ON using the remote control.

DSP indicator

Display

TUNED indicator

MEMORY indicator AUTO indicator

STEREO indicator

Frequency display, Input display, Preset channel display, Surround mode display

Speaker indicators

M.INPUT indicator (1070VR only)

1 POWER key

Use to switch the power ON/STANDBY.

2 Numeric keys 3 STANDBY indicator 4 LEVEL indicator

Lights when the level of the signal being input is too high.

5 MUTE indicator 6 LOUDNESS key

Use to activate the frequency weighting network.

7 STEREO key

Use to cancel the surround mode.

8 PRO LOGIC key

Use to turn on the DOLBY PRO LOGIC mode.

9 DOLBY 3 STEREO key

Use to turn on the DOLBY 3 STEREO mode.

0 DSP key

Use to turn on, or switch, the DSP mode.

! INPUT SELECTOR knob

Use to select the input sources.

@ VOLUME CONTROL knob # PHONES jack

Use for headphone listening.

$ SPEAKERS A/B keys

Use to turn the speakers ON/OFF.

% DIRECT key

Use to tune radio stations directly by numerical input.

^ MEMORY key

Use to store radio stations in the preset memory.

& AUTO key

Use to select the auto tuning mode.

* BAND key

Use to select the broadcast band.

( TUNING keys

Use to tune in radio broadcasts.

) BASS key

Use when adjusting the bass tone.

¡ TREBLE key

Use when adjusting the treble tone.

™ LEVEL CONTROL keys

Use to adjust the level of the selected tone.

£ DIMMER key

Use to adjust the brightness of the display.

¢ CENTER MODE key

Use to select the center mode.

∞ MUTE key

Use to mute the sound.

§ SOURCE DIRECT key ¶ AV AUX jacks

1060VR/1070VR/KR-V8090/KR-V9090

CONTROLS

AUDIO

SHIFTMACRO

TVVIDEO

GUIDEREC

MUTE

VOLUMETUNING/SKIP

THEME FAVMENU

FUNCTION

SHIFT

SETUP

INFO ALT AUDTV/SAT/VID

REPEAT RANDOM+100

DISPLAY

ENT+10

LISTEN MODE

SOUNDSUBWOOFER

231

564

897

REMOTE CONTROL UNIT

RC-R0805

4¢

BAND

P. CALL P. CALL

POWER

1 POWER key

Use to turn the receiver on and off. Use in combination with the input selector

(AUDIO, VIDEO, or TV) keys and SHIFT key to turn various components on and off.

2 MACRO key

Use in combination with the AUDIO, VIDEO, or TV keys to execute a series of commands automatically (MACRO PLAY).

3 VIDEO selector key

Selects the video inputs (VIDEO 1, VIDEO 2, VIDEO 3, AV AUX) and sets the remote to operate the component registered at the respective input.

4 Multi control keys

Use to operate the selected component.

5 REC key

Use to operate the selected component.

6 TUNING/SKIP key

Use during the setup procedure to specify various settings. Use to operate the tuner or selected component.

7 SUBWOOFER key

Use in combination with the VOLUME +/keys to adjust the volume of the subwoofer.

8 FUNCTION SHIFT key

Use in combination with the numeric keys to execute alternate commands.

9 Numeric keys

Provide functions identical to those of the original remote supplied with the component you are controlling.

To access the functions printed above the keys, Press within 3 seconds of pressing the FUNCTION SHIFT key. Function availability varies for each component.

0 SHIFT key

Use in combination with the AUDIO and VIDEO keys to change the remote control mode without changing the input selector or in combination with the POWER key to turn on and off components programmed into the remote.

! TV selector key

Sets the remote to operate a TV or cable box (TV 1, TV 2, CABLE). This key does not change the input selector on the receiver.

@ AUDIO selector key

Selects the audio inputs (CD, TAPE/MD. TUNER, PHONO) and sets the remote to operate the respective KENWOOD audio component.

If you connect audio components from KENWOOD and other makers to the TAPE/MD or CD jacks, you can set the remote to operate these components by registering the appropriate setup code at the respective input.

# GUIDE key

Use to activate the OSD menu functions of registered components.

$ VOLUME key

Use to adjust the receiver volume.

% MUTE key

Use to temporarily mute the sound.

^ SOUND key

Use to adjust the bass, treble, and input level.

& LISTEN MODE key

Use to select the desired surround mode.

* SETUP key

Use to adjust the surround setup.

1060VR/1070VR/KR-V8090/KR-V9090

DISASSEMBLY FOR REPAIR

The method that exchanges a power transistor.

1. Remove 10 screws (1 and 2) of rear panels.

2. Remove flat cable from connector (CN851 and CN852) of printed circuit board X08 (A/3) . And, remove one screw (

3). After this, move printed circuit board X08 (A/3)

toward the right.

3. Remove one screws (

4) of printed circuit board X08 (B/3). After this, move printed circuit board X08 (B/3) toward the right.

4. 1) Cut certain 4 convenes with nippers etc. on the left side of the power supply transformer.

2) Remove one screws (

6) of printed circuit board X14

(C/5). And, remove a headphone unit.

3) Remove 4 screws (7) of printed circuit board X09.

• Make printed circuit board X08 (A/3 and B/3) in

original condition, after screw (

4) is removed. And,

remove screw (

1 and 3) and FFC.

5. Remove 2 screws (

8) of both sides of a panel.

6. Set up a receiver, so that the left side of a receiver becomes downward. And, remove 4 screws (

9). Turn

over a receiver like a figure after this.

7. Remove 5 screws (0) on the side of under of a panel. Next, remove 2 screws of radiators on the side of a base. And, remove a base plate to the back side (arrow direction).

8. Remove the solder of a power transistor from FOIL side of printed circuit board X09. And, exchange a power transistor.

FIG. 1

FIG. 2

FIG. 3

1060VR/1070VR/KR-V8090/KR-V9090

MRD

MWR

MRAS

MCAS

MD0-MD3

MA0-MA7

4MHz 8MHz

4.332MHz

RELAY S

RELAY C

RELAY B

RELAY A

-20dB ATT

MAIN MUTE

SCAN 8

RETARN 5

VIDEOA, VIDEOB, VIDEOC, VIDEOD

SDATA, SCLK, STB1, STB2

SDATA, SCLK, TSTB, VSTB

+-~

~~-+

RELAY PW

GND

POWER AMP

-30V(FL DRIVER)

-17V (SELECTOR)

-5V (VIDEO SEL)

GND

+5V (VIDEO SEL)

+17V(SELECTOR)

GND

+5V (DIGTAL)

GND

u-COM (+5V)

POWER AMP

DSP-CK DSP-CK

DSP-MO DSP-MO

DSP-MI DSP-MI

DSP-RESET DSP-RESET

DSP-HREQ DSP-HREQ

DSP-SS DSP-SS

CH SPACE

PLL DO

PLL CE

PLL CLK

CH SPACE

PLL DO

PLL CE

PLL CLK

PLL DATA

T MUTE

STEREO

S LEVEL

PLL DATA

T MUTE

STEREO

S LEVEL

FL CLK

FL DOUT

FL STB

FL DIN

FL CLK

FL DIN FL STB

FL DOUT

RELAY

SURROUND Rch

SUB WOOFER

CENTER

SURROUND Lch

Rch

Lch

SUB WOOFER

12.288 MHz

DSP-GP100 DSP-GP100

3 SDATA, SCLK, LRCK

SDATA, SCLK, LRCK3

FRONT L

FRONT R

FRONT L

FRONT R

SURROUND R

SURROUND L

CENTER

RELAY S

RELAY B,C

RELAY S

KR-V9090/1070VR

KR-V8090/1060VR

OTHERS TYPE(E,T) TYPE

KR-V8090/1060VR

KR-V9090/1070VR

USED KR-V9090/1070VR

(E,T,Q TYPE)

K,P,Y,C TYPE

3 (X08) IC28

E,T,Q TYPE

BUF

EQ AMP

VIDEO3

VIDEO2

VIDEO1

TAPE1

PHONO

ANALOG L,Rch

(X09) IC4 NJU7312AL

VIDEO1

TAPE1

NJU7313AL

(X09) IC3

INPUT SELECTOR

TUNER

TUNER UNIT

ADAPTOR

OUT

ADAPTOR

NJU7311AM

(X08) IC2

TC9412AP

(X08) IC5

VOLUME1

(X08) IC7

VOLUME2

TC9413P

(X08) IC9

VOLUME3

BUF

-20dB ATT

(X09) Q9

BUF

MUTE

(X09) Q12

POWER AMP

Rch

Lch

Rch

BUF

POWER AMP

SRch

POWER AMP

MUTE

SLch

Rch

Lch

AMP

BUF POWER AMP

MUTE

CENTERch

SPEAKER

CENTER

Rch

Lch

Rch

Lch

CENTER SPEAKER

WOOFER

SUB

PHONES

RDS

(X08) IC40 SAA6579

W24257AK-15

(X08) IC29

SRAM

SEL/VOL ENCODER

INDICATOR

LEVEL

uPD16311

(X14) IC1

FL DRIVER

STAND BY

MATRIX

KEY

REMOCON

VIDEO SELECTOR STB1

INPUT SELECTOR (X09) IC3 (X09) IC4 (X08) IC2

TONE, VOLUME

DSP56004FJ66

(X08) IC26

DSP u-COM

(X08) IC28

AVR

AVRAVR

AVR

STROKE SW

AV AUX

ANALOG

Lch, Rch

PLAY

Lch

Rch

Lch

SURROUND

Rch

CENTER

SUB

WOOFER

VIDEO1

VIDEO3

VIDEO2

VIDEO SELECTOR

(X08) IC1 SN761200N

BUF

MONITOR

BUF

u-COM

DSP

u-COM

TUNER

u-COMCDRIVER

PHONO INPUT

2.5mV/47k

OTHER INPUT

200mV/47k

Ω

Lch, Rch

(X09) IC1

(X09) IC2

ADAPTOR

VIDEO IN/OUT

1Vp-p/75Ω

ADP

400mV/20kΩ 200mV/1kΩ

OUT

(FRONT)

ANALOG

6ch

COMP VIDEO PLAY

(X08) Q5

(X08) Q6

(X09) IC7(1/2)

(X05)

(X14) S37,38

LED

(X14) ED1

(X14) A1

AVR

(X09) IC8 (X09) D111,116

(X09) D17-20

(X09) D5-8(X09) Q1

(X09) IC6(X08) IC24,25

(X08) Q8

(X08) Q7

(X09) Q2

(X09) Q6

(X09) D3

(X09) D1

(X09) D11,12

(X09) D2

(X09)

(X09) K5

(X09) Q11

MUTE

(X09) Q81,83

(X09) Q82,84

(X09) Q42

MUTE

(X09) Q41

(X09) Q79

MUTE

(X09) Q31

(X09) Q87,89

(X09) Q88,90

(X09) Q85,86

(X09) Q10

-20dB ATT

(X09) Q39

-20dB ATT

(X09) Q40

-20dB ATT

(X09) Q30

-20dB ATT

(X09) Q74

-20dB ATT

(X08)

IC6

(X08)

IC10

(X08)

IC8

(X09)

K2(1/2)

(X09)

K4(1/2)

K2(2/2)

(X09)

SL,SRch 21V/8Ω

29.7V/8ΩL,R,Cch

[KR-V8090/1060VR]

SPEAKERS B

SURROUND SPEAKERS

PRE OUT

FRONT

SPEAKERS A

31V/8Ω

[KR-V9090/1070VR]

21.9V/8ΩSL,SRch

L,R,Cch

(X14) J1

SPEAKERS

SURROUND

(X08) IC18 CS5331

A/D

TR.

FINAL

(X09)

D/A

CS4331

(X08) IC11

100Hz LPF

21kHz LPF

(X08) IC15

21kHz LPF

(X08) IC13 TC9184AP

(X08) IC12 NJU7311AM

TONE

21kHz LPF

(X08) IC16

21kHz LPF

(X08) IC19

(X08) IC20

CS4331

D/A

IC4 (2/2) 100Hz LPF

IC4 (1/2)

AMP

(X08)

60dB

(X08)

ANALOG PLAY

ANALOG Lch, Rch

REC OUT

INPUT

MUTE

(X14) D3-5

STB2

(X08) IC12

MCLK

BUF

OUT

REC

SP OUTPUT

POWER AMP

SLch

Lch

Rch

SURROUND SPEAKERS

SLch

POWER AMP

Rch

Lch

SPEAKERS

SURROUND

(X08) IC12

6ch ANALOG INPUT

SURROUND SPEAKERS

YES YES

NO NO

AV AUX

17.7dB

(X08) IC21

(X08) IC17(1/2)

(X09) IC7(2/2)

(X08) IC17(2/2)

(X08) J4

CXP82840-124Q

CXP82852-108Q

Ω

BLOCK DIAGRAM

1060VR/1070VR/KR-V8090/KR-V9090

Indicator tube

(11-MT-110GK)

Indicator tube driver

(uPD16311GC-AB6)

RDS Signal level RDS clock RDS data

Key matrix

PLL IC

(LC72131)

Selector analog

switch control IC

(NJU7311/7312/7313)

Electron volume IC

(TC9412P/9413P)

Electron tone

control IC

(TC9184P)

Video selector IC

(SN761200N)

DSP (56004)

Selector encoder A Selector encoder B Volume encoder A Volume encoder B

CH SPACE Remote controller

reception SL16 / XS8 Serial BUSY Serial DATA

SD STEREO

RESET CE PROTECT

LOUDNESS MUTE

-20dB ATT RELAY POWER RELAY A RELAY B RELAY CS RELAY TR

(X08) IC28

u-COM

CXP82840-120Q(K,P,M)

CXP82852-107Q(E,T,Q)

MUTE LED STANDBY LED

(X08) IC40

(X14) ED1

(X14)

(X05) IC2

(X08) IC2,12 (X09) IC3,4

(X08) IC5,7,9

(X08) IC13

(X08) IC1

(X08) IC26

(X14) IC1

11 16

4 9

CIRCUIT DESCRIPTION

1. Microprocessor CXP82840-120Q/CXP82852-107Q(X08-, IC28)

1-1 Microprocessor periphery block diagram

No. Name I / O Description

1NC O 2NC O 3 NC – Connects to VDD 4 RDS CLK I RDS clock signal input 5 RDS DATA I RDS data signal input 6 VOL ENC A I Volume encoder A input 7 VOL ENC B I Volume encoder B input 8 REMOCON I Remote controller data input

9 CH SPACE I Tuner description switching input 10 NC – 11 NC – 12 SEL ENC A I Selector encoder A input 13 SEL ENC B I Selector encoder B input 14 PLL DO I PLL IF counting value input 15 PLL CE O LC72131 (PLL) strobe signal output 16 PLL CLK O LC72131 (PLL) clock signal output 17 PLL DATA O LC72131 (PLL) data signal output

1-2 Terminal explanation

1060VR/1070VR/KR-V8090/KR-V9090

CIRCUIT DESCRIPTION

No. Name I / O Description

18 T MUTE O Tuner mute signal output 19 STEREO O Tuner stereo signal input 20 SD I Tuner sd signal input 21 FL STB O uPD16311 (FL driver) strobe signal output 22 FL CLK O uPD16311 (FL driver) clock signal output 23 FL DOUT I uPD16311 (FL driver) data signal input 24 FL DIN O uPD16311 (FL driver) data signal output 25 DSP CLK – 56004 (DSP) clock signal output 26 DSP MIS0 I 56004 (DSP) data signal input 27 DSP MIS1 O 56004 (DSP) data signal output 28 – – A / D standard voltage (+5V) 29 S. LEVEL I RDS signal level input 30 DSP SS O 56004 (DSP) interface signal output 31 DSP HREQ I 56004 (DSP) host request signal input 32 SL16 / X58 I Serial SL16 / XS8 switching input 33 S BUSY I/O Serial busy signal input - output 34 S DATA I/O Serial data signal input - output 35 PROTECT I Protection signal input 36 CE I Microprocessor AC off signal input 37 – – Connects to VSS 38 RESET I Reset signal input 39 EXTAL – 8MHz oscillation elements (input) 40 XTAL – 8MHz oscillation elements (output) 41 VSS – Microprocessor power supply (GND) 42 TX – – 43 TEX – Connects to VSS 44 VDD – Microprocessor power supply (+5V) 45 VFDP – Connects to VSS 46 DSP RESET O 56004 (DSP) reset signal output 47 VIDEO D O SN761200n (video sel) control signal D output 48 VIDEO C O SN761200n (video sel) control signal C output 49 VIDEO B O SN761200n (video sel) control signal B output 50 VIDEO A O SN761200n (video sel) control signal A output 51 LOUDNESS O Loudness control signal output 52 -20dB ATT O Volume -20dB ATT control signal output 53 TON STB O TC9184P (Tone) strobe signal output 54 VOL STB O TC9184P(Volume) strobe signal output 55 VOL/TON CLK O TC9412P/9184P (Volume/Tone) clock signal output 56 VOL/TON DAT O TC9412P/9184P (Volume/Tone) data signal output 57 SEL STB2 O NJU7311 (for Sel AC-3) strobe signal output 58 SEL STB1 O NJU7313/7312/7311 (Sel) strobe signal output 59 SEL CLK O NJU7313/7312/7311 (Sel) clock signal output 60 SEL DATA O NJU7313/7312/7311 (Sel) data signal output 61 MUTE O Audio mute signal output 62 RELAY POWER O Power relay ON/OFF output 63 RELAY TR O 2nd side voltage relay ON/OFF output 64 RELAY CS O Speaker C/S relay ON/OFF output 65 RELAY B O Speaker B relay ON/OFF output 66 RELAY A O Speaker A relay ON/OFF output 67 DSP GPIO O

68-80 NC – 56004 (DSP) data forwarding control signal output

89 VDD O Microprocessor power supply (+5V)

90-100 NC O –

1060VR/1070VR/KR-V8090/KR-V9090

CIRCUIT DESCRIPTION

2. In order that an initial state and also back-up are done it functions.

2-1 clear of Back-up

Alternating current on, while pressing a remote power key of a panel/turn off.

Clearing the condition of back-up where is stored that moment, at present it, be set up to the initial state.

(1) Initialization of an amplifier function

Remote power...............................................................................................Power off

Selector source..............................................................................................Tuner

Selector preset ..............................................................................................No

Video output source.......................................................................................Video 1

Speaker A relay.............................................................................................On

Speaker B relay.............................................................................................OFF

Volume ..........................................................................................................Seven steps

Audio adjustment mode.................................................................................OFF

BASS.............................................................................................................0dB

TREBLE.........................................................................................................0dB

Input level......................................................................................................0dB

Loudness.......................................................................................................OFF

Source direct .................................................................................................OFF

Sub woofer Rch.............................................................................................OFF

(2) Initialization of a surround function

Surround mode..............................................................................................Stereo (surround off)

digital signal processor mode........................................................................Arena

Center mode..................................................................................................Normal

Distance.........................................................................................................OFF

Left level........................................................................................................20ms

Right level......................................................................................................0 step

Center level ...................................................................................................0 step

Rear level ......................................................................................................0 step

Sub woofer ....................................................................................................0 step

Effect level.....................................................................................................0 step

WALL.............................................................................................................3

Room size......................................................................................................Medium

(3) Initialization of a tuner function

Band..............................................................................................................Frequency modulation

Preset channel...............................................................................................--ch

Receiving frequency......................................................................................Most minimum value of each destination

K1/K2 type....................................................................................AM modulation : 530kHz

......................................................................................................FM modulation : 87.50MHz

E1/E2/Q type................................................................................AM modulation : 530kHz

......................................................................................................FM modulation : 87.50MHz

Auto/manual operation ..................................................................................Auto

Display mode.................................................................................................Indication of a frequency

RDS memory.................................................................................................OFF

EON interrupt receiving mode.......................................................................OFF

1060VR/1070VR/KR-V8090/KR-V9090

CIRCUIT DESCRIPTION

Channel

BAND

E1/E3

BANDQ01chFM87.50MHz

87.50MHz

02chFM98.00MHz

98.00MHz

03chFM108.00MHz

108.00MHz

108.00MHZ

04chAM630kHz

630kHz

05chAM1000kHz

1000kHz

999kHz

06chAM1440kHz

1440kHz

07chFM87.50MHz

87.50MHz

FML

74.00MHz

08chFM87.50MHz

87.50MHz

FML

65.00MHz

09chFM87.50MHz

87.50MHz

FML

69.00MHz

10chFM89.10MHz

89.10MHz

11chFM90.00MHz

90.00MHz

12chFM97.50MHz

97.50MHz

13chFM98.50MHz

98.50MHz

14chFM106.00MHz

106.00MHz

15chAM530kHz

530kHz

531kHz

16chAM990kHz

990kHz

17chAM1700kHz

1610kHz

1602kHz

18chFM87.50MHz

87.50MHz

19chFM87.50MHz

87.50MHZ

87.50MHz

20chFM87.50MHz

87.50MHz

21~39chFM76.00MHz

87.50MHz

3. TUNER PRESET MEMORY FREQUENCY(INITIALIZE)

The initial setting is performed in a following event :

1. When backup memory data is destroyed when reset is applied to the microprocessor.

2. When the power cord is plugged in to the AC wall outlet while pressing the POWER key.

4. Mode / destination list

(1) KR-9090 / 8090 function judgement Function list

Function

Model

AC-3

Rch L / R control

switching switch

SW4

KR-V9090 O different control 1 KR-V8090 X Simultaneous control 0

(2) Judgement of the destination

In this microprocessor the destination is switched by a diode switch. The relation between a diode switch and destination are as under table.

1060VR/1070VR/KR-V8090/KR-V9090

CIRCUIT DESCRIPTION

Type Band

Range of a

receiving frequency

Channel

space

Phase locked

loop standard

frequency

Destination switching switch

(X14) IC1

(X08) IC2

SW3 SW2 SW1

321

K1 FM 87.35MHz - 108.0MHz 100kHz +10.7MHz 25kHz

000

(1700) AM 530kHz - 1700kHz 10kHz +450kHz 10kHz

K2 FM 87.5MHz - 108.0MHz 100kHz +10.7MHz 25kHz

011

(1610) AM 530kHz - 1610kHz 10kHz +450kHz 10kHz

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

011

AM 531kHz - 1602kHz 9kHz +450kHz 9kHz

(RDS )

FM 8735MHz - 108.0MHz 50kHz +10.7MHz 25kHz

101

AM 531kHz - 1602kHz 9kHz +450kHz 9kHz

Q (RDS)

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

111FMH 87.5MHz - 108.0MHz 50kHz +10.7MHz 5kHz

AM 531kHz - 1602kHz 9kHz +450kHz 9kHz

✡ Diode switch (SWx) 0 = diode no (It becomes LOW input in the case that it is static)

(It becomes HIGH input in the case that it is static) There is 1 = diode X = transistor switch (0 = OFF / 1 = ON)

✡ A phase locked loop standard frequency is the value that set up it to a phase locked loop.

This value becomes same a dividing ratio of amplitude modulation with a phase locked loop standard frequency. However, a dividing ratio of frequency modulation becomes 2 times of phase locked loop standard frequencies.

Control

integrated

circuit

L/R

TUNER

PHONO

TAPE/

VIDEO 1

VIDEO 2

VIDEO3

AV AUX

NJU7312

SW1

2 L 01000000

27 R01000000

SW2

3 L00000010

26 R00000010

SW3

4 L00000100

25 R00000100

SW4

600001000

23 R00001000

SW5

7 L00010000

22 R00010000

SW6

8 L00100000

21 R00100000

SW7 10 L10000000

19 R10000000

SW8 11 L00000001

18 R00000001

5. Setting contents of a control integrated circuit

5-1 Condition of a selector switch

(X09-) IC3

The basis destination of a tuner

ch SP

1060VR/1070VR/KR-V8090/KR-V9090

CIRCUIT DESCRIPTION

Control

integrated

circuit

Condition

SW1

SW2

SW3

SW4

SW5

SW6

SW7

27 L

2 R

26 L

3 R

24 L

5 R

23 L

6 R

21 L

8 R

20 L

9 R

18 L

11 R

NJU7311

LINE INPUT

1100110011000

LINE INPUT

0011001100010

*1 Alternating current-3 modes use 5.1ch INPUT only at the time of alternating current-3 correspondence selectors

(DVD/1d) in on condition. Use usual LINE INPUT at the time of except for the above.

Control

integrated

circuit

L/R

TUNER

PHONO

TAPE/

VIDEO1

VIDEO2

VIDEO3

AV AUX

NJU7313

SW1

2 L11101111

27 R11101111

SW2

3 L11110111

26 R11110111

SW3

4 L11111111

25 R11111111

SW4

5 L00000000

24 R00000000

SW5

7 L*122 R

SW6

8 L*121 R

SW7 10 L*219 R

SW8

11 L*218 R

*1 Adapter on/off control *2 Control of INPUT LEVEL

Adapter on : SW4 (L/R) 0 INPUT LEVEL : 0dB SW7(L/R) -1

SW5 (L/R) 1 SW8(L/R) 0

Adapter off : SW4 (L/R) 1 INPUT LEVEL : -3dB SW7(L/R) 0

SW5 (L/R) 0 SW8(L/R) 0

(X09-)IC4

Control

integrated

circuit

Condition

SW1

SW2

SW3

SW4

SW5

SW6

SW7

27 L

2 R

26 L

3 R

24 L

5 R

23 L

6 R

21 L

8 R

20 L

9 R

18 L

11 R

NJU7311

SOURCE

DIRECT

0000001100010

STEREO

00111100000100DSP

11001100000100M. INPUT

11001100001000TEST TONE

0000000011001

(X08-) IC2

(X08-) IC2 only KR-V9090/1070VR

1060VR/1070VR/KR-V8090/KR-V9090

CIRCUIT DESCRIPTION

6. PLL IC expansion port control

PLL IC expansion port control list (Control data by software)

Phase locked loop integrated circuit expansion port control list (Logic that is outputted from a port [H / L H1-z]

Only L / HI-z is able to output the port of frequency modulation / amplitude

✽ 1 : modulation / LW / MONO due to Nch open drain. ✽

2 : HI-z is made constantly because there is not LW in the specification is this time.

Operating state

Extension port

name

10 7 8 9 11 13

FM AM LW MONO RDS ATT IF ON

IF ON

RDS ATT

MONO ON

FM ON100110 AM ON010110

MONO OFF

FM ON100010 AM ON010010

RDS ATT

OFF

MONO ON

FM ON100100 AM ON010100

MONO OFF

FM ON100000 AM ON010000

IF OFF

RDS ATT

MONO ON

FM ON100111 AM ON010111

MONO OFF

FM ON100011 AM ON010011

RDS ATT

OFF

MONO ON

FM ON100101 AM ON010101

MONO OFF

FM ON100001 AM ON010001

Operating state

Extension port

name

10 7 8 9 11 13

FM AM LW MONO RDS ATT IF ON

IF ON

RDS ATT

MONO ON

FM ON L HI-z HI-z L H L AM ON HI-z L HI-z L H L

MONO OFF

FM ON L HI-z HI-z HI-z H L AM ON HI-z L HI-z HI-z H L

RDS ATT

OFF

MONO ON

FM ON L HI-z HI-z L L L AM ON HI-z L HI-z L L L

MONO OFF

FM ON L HI-z HI-z HI-z L L AM ON HI-z L HI-z HI-z L L

IF OFF

RDS ATT

MONO ON

FM ON L HI-z HI-z L H H AM ON HI-z L HI-z L H H

MONO OFF

FM ON L HI-z HI-z HI-z H H AM ON HI-z L HI-z HI-z H H

RDS ATT

OFF

MONO ON

FM ON L HI-z HI-z L L H AM ON HI-z L HI-z L L H

MONO OFF

FM ON L HI-z HI-z HI-z L H AM ON HI-z L HI-z HI-z L H

1060VR/1070VR/KR-V8090/KR-V9090

CIRCUIT DESCRIPTION

7. Test mode

(1) Test mode setting method

Turn on the power supply while pressing TUNINGDOWN key, to make a set in test mode condition. When a set is set up in test mode condition a set becomes the following condition. Automatic POWER ON All indicator tubes and also LED are lighted. (This condition can be canceled by pressing the key of the set.) A backup at the thing except ON/OFF of POWER is initialized.

(2) Test mode cancellation method

The power supply is turned off. "Usually display / All the turn-off" is periodically repeated by operating MEMORY key.

(3) A tuner function.

When a selector is set to the tuner, the following key is not usual function and operates by the special function. The function to summon the channel of the presetting

The following channel is summoned when not

operating +10 keys. 1ch~9ch (1~9key) 10ch (0key)

When +10 keys are pressed once, the following

channel is summoned. 11ch~19ch (1~9key) 20ch (0key)

When +10 keys are pressed twice, the following

channel is summoned. 21ch~29ch (1~9key) 30ch (0key)

When +10 keys are pressed three times, the following

channel is summoned. 31ch~39ch (1~9key) 40ch (0key)

When +10 keys are pressed four times, it gets to do

the function which is the same as the condition which doesn’t press +10 keys.

• The S level hexadecimal DATA display and the ATT ON/OFF function

When a selector is set to the tuner, it repeats the following operation cyclically when operating the PTY key of the set.

a) When ATT is in the OFF condition, it displays

as follows. “ATT OFF display” + “Signal level display by the tuner (HEX DATA)”

b) When ATT is in the ON condition, it displays as

follows. “ATT ON display” + “Signal level display by the tuner (HEX DATA)”

c) At the time of the ATT OFF condition, the set

becomes usual display.

✰ When the key of a set is pressed a signal level

display of a tuner continues to display the value of when that ATT works.

• MUTE signal output Because TUNER-MUTE always becomes OFF condition, it isn’t possible to do control.

• When a selector is set to the thing except TUNER, each key does usual function. Then, the test mode doesn't work.

• RDS display mode. RDS-PS display works by pressing PRO-LOGIC key irrespective of TUNED. (It is able to cancel it by pressing PRO-LOGIC key.)

• I

(4) An amplifier function.

• The value in the first of the speaker setting by the test mode is full equipment.

• When a selector is set to the thing except TUNER, the following key works by the special function. When a selector is set to TUNER, the following key does usual work.

• The way of setting MAX/MID/MID of AUDIO LEVEL/SURROUND LEVEL easily.

• AUDIO LEVEL/SURROUND LEVEL is variably made of MULTILEVEL UP/DOWN operation. When a selector is set to the thing except TUNER, operate a number key. MAX/MID/MIN can be set by the following operation. It is set in as follows at the time of MID.

Master volume Intial value Balance Center BASS/TREBLE/SUB WOOFER/ 0dB or a 0step CENTER/REAR EFFECT 1step

It is possible to set as follows by operating with the

number key when a selector is set to the thing except TUNER.

The way of setting AUDIO LEVEL/SURROUND

LEVEL easily.

Setting item

Ten-key that

operates

Master volume

Maximum

0dB

Middle

-30dB

Minimum

-98dB

Item

Number key

INPUT LEVEL

"Press number key ""1-3"", after a number key of the left description is pressed."

DISTANCE(PRO LOGIC only)

Lch LEVEL

Rch LEVEL

CENTER LEVEL

Sch LEVEL(CYCLIC SL ←→ SR)

EFFECT(DSP only)

SUB WOOFER LEVEL

ROOM SIZE(DSP only)

MUTE

WALL SIZE(DSP only)

DIMMER

1060VR/1070VR/KR-V8090/KR-V9090

CIRCUIT DESCRIPTION

3 Test tone operation

While displaying as follows every time it presses DIRECT key when dolby surround is working, it switches a speaker and TEST-TONE is output. By pressing DIRECT key, this work and dolby surround can be canceled.

Mute signal output

Because the analog mute always becomes OFF condition, it isn’t possible to control absolutely. however, when the value with front volume is the minimum, it becomes an analog mute ON condition.

5 AC-3 The 6ch input changing.(Only KR-V9090)

When the selector of KR-V9090 is VIDEO2, press "AUTO/MANU" key. At this time, KR-V9090 becomes "AC3 6ch input" condition. (M-INPUT is lighted). "AC3 6ch input" condition is able to cancel by pressing "AUTO/MANU" key. (It become usual function).

6 The ADAPTER input changing.

Press the "BAND" key of KR-V9090. At this time, KRV9090 changes to ADAPTER input. When "BAND" key is pushed again, it is able to cancel it.

7 TONE BASS/TREBLE

When KR-V9090 is doing the function of the test mode, the TONE BASS/TREBLE key does a function below periodically.

FLAT(0) MAX(+10) MIN(-10)

+ 33 hidden pages

Kenwood KRV-1070 Service manual

CONTENTS / ACCESSORIES

Contents

Accessories

An use model discrepancy table in of remote controller

CONTROLS

DISASSEMBLY FOR REPAIR

BLOCK DIAGRAM

CIRCUIT DESCRIPTION

1-1 Microprocessor periphery block diagram

1-2 Terminal explanation

2. In order that an initial state and also back-up are done it functions.

2-1 clear of Back-up

4. Mode / destination list

5. Setting contents of a control integrated circuit

5-1 Condition of a selector switch

6. PLL IC expansion port control

7. Test mode