Kenwood-VR-307-Service-Manual.pdf

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AUDIO VIDEO SURROUND RECEIVER
KRF-V7020D/V8020D
VR-307/309/357
SERVICE MANUAL
© 1999-1/B51-5499-00 (K/K) 1895
KENWOOD badge
(B43-0302-04)
Knob
(K29-7370-02)
Font glass
(B10-3458-02)
Knob
(K29-7323-03)
Knob
(K29-7325-04)
-
–
Knob
(K27-2293-04)
Phone jack
(E11-0127-05)
Knob
(K29-7370-02)
Knob
(K29-7326-04)
Foot
(J02-1407-03)
Slide switch
(S62-0034-04)
Miniature phone jack
(E11-0293-05)
Phono jack
(E63-0093-05)
Screw terminal board
(E70-0100-05)
Phono jack
(E63-0094-05)
Phono jack
(E63-1080-05)
Power cord bushing
(J42-0083-05)
Slide switch
AC power cord
(S62-0001-04)
(E30-2605-05)
Phono jack (4Px2)
(E63-0046-15)
Lock terminal board
(E70-0052-05)
Phono jack (6Px2)
(E63-0047-15)
Optical receiving module
(W02-1181-05)
Phono jack
(E63-0164-05)
AC outlet
(E03-0148-05)
Lock terminal board
(E70-0047-05)
Metallic cabinet
(A01-3685-01)
Illustration is KRF-V7020D(Y).
KRF-V7020D/V8020D/VR-307/309/357
CONTENTS / ACCESSORIES / CAUTIONS
Contents
CONTENTS / ACCESSORIES / CAUTIONS...............2
DISASSEMBLY FOR REPAIR.....................................3
CONTROLS .................................................................4
BLOCK DIAGRAM .......................................................6
CIRCUIT DESCRIPTION .............................................7
ADJUSTMENT .......................................................... 14
WIRING DIAGRAM ....................................................15
PC BOARD ................................................................16
SCHEMATIC DIAGRAM ............................................21
EXPLODED VIEW .....................................................35
PARTS LIST...............................................................36
SPECIFICATIONS .....................................................45
Accessories
FM indoor antenna (1)
(T90-0836-05)
AM loop antenna (1)
(T90-0833-05)
Batteries (R03/AAA) (4)
Loop antenna stand (1)
Remote control unit (1)
RC-R0508/R0608
Remote control unit (1)
RC-R0712
*AC plug adaptor (1)
(E03-0115-05)
*Use to adapt the
plug on the power
cord to the shape
of the wall outlet.
(Accessory only for regions where use
is necessary.)
Battery cover (A09-0366-08)
Battery cover (A09-1123-08)
Model name vs remote controller
Remote Controller
Model
Destinations
Parts number
A70-1275-05
A70-1277-05
A70-1268-05
A70-1277-05
A70-1277-05
Model name
RC-R0712
RC-R0508
RC-R0608
RC-R0712
RC-R0608
RC-R0608
Battery Cover
A09-1123-08
A09-0366-08
A09-0366-08
A09-1123-08
A09-0366-08
A09-0366-08
KRF-V7020D
X7,C7,Y7,V7,M7 A70-1268-05
KRF-V8020D
X8
KRF-V8020D
C8,I8,Y8,M8
VR-307
VR-309
VR-357
Cautions
Resetting the Microcomputer
If the microcomputer may malfunction (unit cannot be operated,
or shows an erroneous display) if the power cord is unplugged
while the power is ON, or due to some other external factor. If this
happens, execute the following procedure to reset the micro-
computer and return the unit to its normal operating condition.
K6,P6
K8,P8
K7,P7
For U.S.A. and Canada
Unplug the power cord from the wall outlet, then plug it
back in while holding down the POWER key.
For other countries
With the power cord plugged in, turn the POWER key
OFF. Then, while holding down the ON/STANDBY key,
press POWER.
• Please note that resetting the microcomputer will clear the contents
of the memory and returns the unit to the state it was in when it left the
factory.
2
KRF-V7020D/V8020D/VR-307/309/357
DISASSEMBLY FOR REPAIR
1 x2
2 x2
2 x2
3 x2
4
4
1. Remove the 8 screws (1,2,3),
remove the rear panel.
2. Connect the GND of the rear panel
and the chassis, the GND of the
mounting hardware and the chassis
with 2 alligators clip (4)
4
3
KRF-V7020D/V8020D/VR-307/309/357
4
Frequency display,
Input display,
Preset channel display,
Surround mode display
AUTO SOUND indicator
Band indicators
PRO LOGIC
indicator
DIGITAL indicator
S.DIRECT indicator
AUTO indicator
MEMO. indicator
ST. indicator
MACRO
SHIFT
Remote control unit (RC-R0608 / R0508)
1
2
3
VIDEO
POWER
Speaker indicator
CLIP indicator
MUTE indicator
SP
CLIP
AB
MUTE
L
LS
C
R
FM
AUTO SOUND
DIGITAL
AUTO
AM
PRO LOGIC
S.DIRECT
MEMO.
MHz
3 STEREO
MONITOR
kHz
DOWNMIX
ST.
TUNED
LFE
SW
S
RS
DOWNMIX indicator
Speaker selection indicators
Input channel indicators
Output channel indicators
For VR-307, VR-357
KRF-V7020D
DOLBY DIGITAL
TUNED indicator
MONITOR indicator
AUDIO
TV
0
!
@
Display
3 STEREO indicator
STEREO indicator
P. CALL
8
6
7
BAND
P. CALL
4
5
6 7
8
9
4
¢
1
2
VIRTUAL SURROUND
3 4
5
AV SURROUND RECEIVER
REC
GUIDE
TUNING/SKIP
MUTE
VOLUME
#
$
%
^
&
*
DTS
DOLBY DIGITAL
VIRTUAL SURROUND
VOLUME CONTROL
6
DIMMER
P.CALL
P.CALL
BAND
AUTO
MEMORY
STANDBY
STANDBY
POWER
MULTI CONTROL
INPUT SELECTOR
7
8
DOWN
UP
SUBWOOFER
LISTEN
MODE
SOUND
ON / STANDBY
ON / STANDBY
-
ON
POWER
SPEAKERS
A
B
BASS BOOST
MONITOR
–
OFF
SOURCE
DIRECT
FUNCTION
SHIFT
MENU
THEME
SETUP
FAV
INPUT MODE LISTEN MODE SOUND
SETUP
PHONES
For U.S.A.
and Canada
1
TV/SAT/VID
2
INFO
3
ALT AUD
9
0
1
POWER key
(For U.S.A. and Canada)
Use to turn the power ON/OFF.
STANDBY indicator
) key
1
ON/STANDBY (
(Except for U.S.A. and Canada)
Use to switch the power ON/STANDBY
when the POWER is turned ON.
STANDBY indicator
2
POWER key
(Except for U.S.A. and Canada)
Use to turn the main power ON/OFF.
3
Surround indicators
÷
DTS indicator
Lights when the receiver is in the DTS
mode.
(For VR-309, KRF-V8020D)
÷
DOLBY DIGITAL indicator
Lights when the receiver is in the Dolby
Digital mode.
÷
VIRTUAL SURROUND indicator
Lights when the receiver is in the Virtual
Surround mode.
4
+100
5
REPEAT
6
RANDOM
7
+10
8
DISPLAY
9
ENT
!
@ # $
% ^&
* (
)
#
MONITOR key
$
SOURCE DIRECT key
%
INPUT MODE key
Use to switch between the digital and analog
inputs.
^
LISTEN MODE key
Use to select the listening mode.
&
SOUND key
Use to adjust the sound quality and amb
ence effects.
*
SETUP key
Use to select the surround sound settings
(
MULTI CONTROL knob
Used to make a variety of settings.
)
INPUT SELECTOR knob
Use to select the input sources.
0
There are some cases in which keys (or
knobs) that have the same function on
the receiver and on the remote control
have different names. In the instruc-
tions of this manual, if the names of
corresponding keys (or knobs) on the
receiver and remote control are differ-
ent, the name of the remote control key
is indicated in parentheses.
CONTROLS
4
DIMMER key
Use to adjust the brightness of the display.
Use to select the REC MODE.
5
P.CALL keys
Use to call up previously registered radio
stations.
6
BAND key
Use to select the broadcast band.
7
AUTO key
Use to select the auto tuning mode.
8
MEMORY key
Use to store radio stations in the preset
memory.
9
VOLUME CONTROL knob
0
PHONES jack
Use for headphone listening.
!
SPEAKERS A/B keys
Use to turn the speakers ON/OFF.
@
BASS BOOST key
Use to select the maximum adjustment
setting for the low frequency range.
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 and sets the remote
control to operate the component regis-
tered 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 control 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 control.
!
TV selector key
Sets the remote control to operate a TV or
cable box. This key does not change the
input selector on the receiver.
@
AUDIO selector key
Selects the audio inputs and sets the re-
mote control to operate the respective
KENWOOD audio component.
If you connect audio components from
KENWOOD and other makers to the MD/
TAPE or CD jacks, you can set the remote
control 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 sound quality and ambi-
ence effects.
&
LISTEN MODE key
Use to select the listening mode.
*
SETUP key
Use to select the surround sound settings.
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.
Remote control unit (RC-R0712)
1
2
3
POWER
1
8
4
5
6
0
7
8
9
+10
2
6
7
AUTO
DISC SKIP
2
3
4
5
6
BAND
1
TUNING
¡
A/B +100
4
P.CALL
¢
LISTEN
MODE
MULTI CONTROL
VOL.UP
S.DIRECT
TITLE
MUTE
MENU
9
0
!
@
#
SOUND
ENTER
SET UP
CONTROLS
SUB TITLE
VOL.DOWN
OSD
MONITOR
MD/TAPE
TUNER
CD
PHONO
7
DVD CONT
VIDEO 1
VIDEO 2
VIDEO 3
KRF-V7020D/V8020D/VR-307/309/357
REMOTE CONTROL UNIT
RC-R0712
1
Numeric keys
If CD or MD is selected as the input source,
these keys function as numeric keys. If tuner
is selected as the input source, these keys
are used to call up station presets.
2
Component operation keys
Use these keys to operate other compo-
nents with system control connections to
the receiver.
2
key
If tape is selected as the input source, this
key functions as the play key for side B of the
cassette (the side facing away from the front
of the deck).
BAND (6) key
If tuner is selected as the input source, this
key functions as the band selector key.
If CD is selected as the input source, this key
functions as the play/pause key.
If MD is selected as the input source, this key
functions as the play key.
DISC SKIP, A/B, +100 key
If CD is selected as the input source, this key
functions as the multi-CD player disc skip key.
If TAPE is selected as the input source, this
(A and B) of a double cassette deck.
AUTO (7)key
If tuner is selected as the input source, this
key functions as the AUTO key.
If CD or MD is selected as the input source,
this key functions as the stop key.
TUNING (1
¡)
keys
If tuner is selected as the input source, these
keys function as tuning keys.
If CD or MD is selected as the input source,
these keys function as search keys.
P.CALL (4
¢)
keys
If tuner is selected as the input source, these
keys function as P.CALL keys.
If CD or MD is selected as the input source,
these keys function as skip keys.
3
LISTEN MODE key
Use to select the listening mode.
4
MUTE key
Use to temporarily mute the sound.
5
SOUND key
Use to adjust the sound quality and ambi-
ence effects.
6
MULTI CONTROL key
Used to make a variety of settings.
7
DVD CONT key
Used to operate DVD player.
While holding this key depressed, press any of
the keys masked in gray inthe above illustration
to operate the corresponding function of a
DVD player from KENWOOD.
Keys
3, 4, 5, 9
and
!
are given the
following functions during the DVD player
control operation.
3
:TITLE
4
:ENTER
5
:SUB TITLE
9
:MENU
!
:OSD
For details, refer to the instruction manual of
your DVD player.
8
POWER key
Use to switch the power ON/STANDBY when
the POWER is turned ON.
9
SOURCE DIRECT key
0
VOLUME CONTROL key
!
SETUP key
Use to select the surround sound settings.
@
MONITOR key
#
Input selector keys
Use to select the receiver's input source.
5

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