KENWOOD VR255 Service Manual

Cover page of KENWOOD VR255 Service Manual

Service Manual for KENWOOD VR255, downloadable as a PDF file.

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AUDIO VIDEO SURROUND RECEIVER
KRF-V5010/V5010E/V5010W/
KRF-V6010/V6010E/V6010W/
KRF-V7010/V7010E/V7010W/
VR-205/207/255/257
SERVICE MANUAL
© 1998-4/B51-5425-00 (K/K) 3484
A
SPEAKERS
B
BASS BOOST
VIDEO 2/
MONITOR
SOURCE
DIRECT
LISTEN MODE
SOUND
SETUP
MULTI CONTROL
INPUT SELECTOR
VOLUME CONTROL
DOWN
UP
STANDBY
AV SURROUND RECEIVER
ON / STANDBY
PHONES
- ON ­ OFF
POWER
PTY
TA/NEWS
DISPLAY
BAND
AUTO
MEMORY
REC OUT
PHONO
CD
MD / TAPE
VIDEO 2/MONITOR
VIDEO 1
PLAY IN
PLAY IN
PLAY IN
REC OUT
SUB
WOOFER
L
R
VIDEO 2
SURROUND
FRONT
MONITOR
VIDEO IN
DVD 5CH INPUT
VIDEO OUT
FM
75
GND
AM
ANTENNA
CABLE READY (TV)
(
)
SYSTEM CONTROL
SL16
(XS8)
SUBWOOFER SURROUND
PRE OUT
CENTER
CENTER
6CH INPUT
VIDEO 1
VIDEO 2
L
R
CENTER SPEAKER
(8~16
)
FRONT SPEAKERS
(8~16
)
+
+
-
-
R
A
L
C
SURROUND SPEAKERS
(8~16
)
FRONT SPEAKERS
(8~16
)
L
R
+
+
--
+
+
--
L
R
B
KENWOOD badge
(B43-0302-04)
Knob*
(K29-)
Phone jack*
(E11-)
Knob*
(K29-)
Knob*
(K29-)
Knob*
(K27-)
Foot*
(J02-)
Metallic cabinet*
(A01-)
Phono jack (4Px2)
(E63-0172-05)
Phono jack
(E63-1019-05)
Phono jack
(E63-1018-05)
Lock terminal board*
(E70-)
Phono jack
(E63-1015-05)
Lock terminal board*
(E70-)
AC outlet*
(E03-)
AC power cord*
(E30-)
AC power cord bushing
(J42-0083-05)
Lock terminal board
(E70-0080-05)
RF coaxial cable receptacle
(E04-0026-05)
Front glass*
(B10-)
Knob*
(K29-)
Knob*
(K29-)
* Refer to parts list on page 33.
Miniature phone jack(2P)
(E11-0347-05)
Slide switch
(S62-0034-05)
Phono jack (3Px2)
(E63-1017-05)
Phono jack (6P)
(E63-0173-05)
KRF-V5010(K)COVER( 98.12.912:21 y[W 2
background image
AUDIO VIDEO SURROUND RECEIVER
KRF-V5010/V5010E/V5010W/
KRF-V6010/V6010E/V6010W/
KRF-V7010/V7010E/V7010W/
VR-205/207/255/257
SERVICE MANUAL
© 1998-4/B51-5425-00 (K/K) 3484
A
SPEAKERS
B
BASS BOOST
VIDEO 2/
MONITOR
SOURCE
DIRECT
LISTEN MODE
SOUND
SETUP
MULTI CONTROL
INPUT SELECTOR
VOLUME CONTROL
DOWN
UP
STANDBY
AV SURROUND RECEIVER
ON / STANDBY
PHONES
- ON ­ OFF
POWER
PTY
TA/NEWS
DISPLAY
BAND
AUTO
MEMORY
REC OUT
PHONO
CD
MD / TAPE
VIDEO 2/MONITOR
VIDEO 1
PLAY IN
PLAY IN
PLAY IN
REC OUT
SUB
WOOFER
L
R
VIDEO 2
SURROUND
FRONT
MONITOR
VIDEO IN
DVD 5CH INPUT
VIDEO OUT
FM
75
GND
AM
ANTENNA
CABLE READY (TV)
(
)
SYSTEM CONTROL
SL16
(XS8)
SUBWOOFER SURROUND
PRE OUT
CENTER
CENTER
6CH INPUT
VIDEO 1
VIDEO 2
L
R
CENTER SPEAKER
(8~16
)
FRONT SPEAKERS
(8~16
)
+
+
-
-
R
A
L
C
SURROUND SPEAKERS
(8~16
)
FRONT SPEAKERS
(8~16
)
L
R
+
+
--
+
+
--
L
R
B
KENWOOD badge
(B43-0302-04)
Knob*
(K29-)
Phone jack*
(E11-)
Knob*
(K29-)
Knob*
(K29-)
Knob*
(K27-)
Foot*
(J02-)
Metallic cabinet*
(A01-)
Phono jack (4Px2)
(E63-0172-05)
Phono jack
(E63-1019-05)
Phono jack
(E63-1018-05)
Lock terminal board*
(E70-)
Phono jack
(E63-1015-05)
Lock terminal board*
(E70-)
AC outlet*
(E03-)
AC power cord*
(E30-)
AC power cord bushing
(J42-0083-05)
Lock terminal board
(E70-0080-05)
RF coaxial cable receptacle
(E04-0026-05)
Front glass*
(B10-)
Knob*
(K29-)
Knob*
(K29-)
* Refer to parts list on page 33.
Miniature phone jack(2P)
(E11-0347-05)
Slide switch
(S62-0034-05)
Phono jack (3Px2)
(E63-1017-05)
Phono jack (6P)
(E63-0173-05)
KRF-V5010(K)COVER( 98.12.912:21 y[W 2
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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.
Unplug the power cord from the wall outlet, then plug it
back in while holding down the POWER key.
· 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.
With the power cord plugged in, turn the POWER key
OFF. Then, while holding down the ON/STANDBY key,
press POWER.
For U.S.A. and Canada
For other countries
Remote controller
Parts number
Model name
Model name
Destination
Battery cover
A70-1194-05
RC-R0607
VR-207
KP1
VR-257
K1P2
VR-255
K1P2
KRF-V7010
Y1M1
A09-0366-08
A70-1195-05
RC-R0507
KRF-V7010
X1E1T1
KRF-V7010W
Q1
KRF-V7010E
E2
A70-1196-05
RC-R0307
KRF-V6010
E
KRF-V6010W
Q1
KRF-V6010E
E1
KRF-V5010
E1T1
KRF-V5010W
Q1
A09-0396-08
KRF-V5010E
E2
A70-1199-05
RC-R0407
VR-206
K2P3
KRF-V6010
M1X1
VR-205
KP1
KRF-V5010
Y1M1X1
FM
(T90-0836-05)
indoor antenna
AC plug adaptor (1)
(E03-0115-05)
(1)
Loop antenna stand (1)
AM loop antenna (1) (T90-0833-05)
(J19-3645-05)
Batteries (R03/AAA) (4)
Remote control unit (1)
RC-R0507/R0607
Remote control unit (1)
RC-R0307/R0407
Batteries (R06/AA) (2)
AUDIO
SHIFT
MACRO
TV
VIDEO
GUIDE
REC
MUTE
VOLUME
TUNING/SKIP
THEME
FAV
MENU
FUNCTION
SHIFT
SETUP
INFO
ALT
AUD
TV/SAT/VID
REPEAT
RANDOM
+100
DISPLAY
ENT
+10
LISTEN
MODE
SOUND
SUBWOOFER
23
1
56
4
89
7
0
REMOTE
CONTROL
UNIT
8
7
6
BAND
P.
CALL
P
.CALL
POWER
DISC
SKIP
A/B
+100
1230
456
+
1
0
789
VIDEO
1
PTY
TA/NEWS
DISPLAY
MD/TAPE
TUNER
CD
PHONO
BASS
BOOST
BAND
VIDEO2/MON.
DVD/6CH
INPUT
DIRECT
SOURCE
TUNING
P.CALL
POWER
REMOTE
CONTROL
UNIT
RC-R0307
AUTO
VOLUME
UP
VOLUME
DOWN
MULTI
CONTROL
MUTE
SOUND
SETUP
MODE
LISTEN
UP
DOWN
*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-V5010/V6010/V7010/VR-205/206/207/255/257
2
CONTENTS / ACCESSORIES
CONTENTS / ACCESSORIES ....................................2
CONTROLS .................................................................3
DISASSEMBLY FOR REPAIR .....................................5
WIRING DIAGRAM ......................................................6
BLOCK DIAGRAM .......................................................7
CIRCUIT DESCRIPTION .............................................8
ADJUSTMENT .......................................................... 13
PC BOARD ................................................................14
SCHEMATIC DIAGRAM ............................................17
EXPLODED VIEW .....................................................32
PARTS LIST...............................................................33
SPECIFICATIONS .....................................................47
Contents
Accessories
Model name vs remote controller
KRF-V5010(K)COVER( 98.12.912:22 y[W 3
background image
KRF-V5010/V6010/V7010/VR-205/206/207/255/257
DIMMER
P.CALL
P.CALL
***** **
*;
FM
AM
kHz
MHz
3 STEREO
DSP
B
S.DIRECT
A
SP
TI.VOL
MUTE
RDS EON PTY
TP TA NEWS
DOWNMIX
MONITOR
PRO LOGIC
TUNED
MEMO.
AUTO
ST.
S
SW
C
RS
R
LS
L
7
3
5 6
4
8
(
*
%
$
#
@
9
^ &
SP
SPEAKERS
MUTE
0!
A
SPEAKERS
B
BASS BOOST
VIDEO 2/
MONITOR
SOURCE
DIRECT
LISTEN MODE
SOUND
SETUP
MULTI CONTROL
INPUT SELECTOR
VOLUME CONTROL
DOWN
UP
AV SURROUND RECEIVER
PHONES
BAND
AUTO
MEMORY
AUTO SOUND
SAP SIGNAL
MAIN
SAP
STANDBY
ON / STANDBY
- ON
­ OFF
POWER
POWER
STANDBY
ON / STANDBY
2
1
Display
Speaker selection indicators
Output channel indicators
AUTO SOUND indicator
(VR-257)
Band indicators
AUTO indicator
MEMO. indicator
ST. indicator
TUNED indicator
3 STEREO indicator
STEREO indicator
7 MEMORY key
Use to store radio stations in the preset
memory.
8 VOLUME CONTROL knob
9 PHONES jack
Use for headphone listening.
0 SPEAKERS A key
Use to turn speaker system A on and off.
SPEAKERS key
(VR-205, VR-255, KRF-V5010)
Use to turn the speakers on and off.
! SPEAKERS B key
Use to turn speaker system B on and off.
MUTE key
(VR-205, VR-255, KRF-V5010)
Use to temporarily mute the sound.
@ BASS BOOST key
Use to select the maximum adjustment
setting for the low frequency range.
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.
Frequency display,
Input display,
Preset channel display,
Surround mode display
Speaker indicator
MUTE indicator
PRO LOGIC
indicator
S.DIRECT indicator
MONITOR indicator
# VIDEO 2/MONITOR key
$ SOURCE DIRECT key
% LISTEN MODE key
Use to select the listening mode.
^ SOUND key
Use to adjust the sound quality and ambi-
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.
For U.S.A.
and Canada
For VR-205, VR-255,
KRF-V5010
For VR-205, VR-255 and KRF-V5010
1 POWER key
(For U.S.A. and Canada)
Use to turn the power ON/OFF.
STANDBY indicator
1 ON/STANDBY (
) key
(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)
3 DIMMER key
Use to adjust the brightness of the display.
4 P.CALL keys (Except for VR-257)
Use to call up previously registered radio
stations.
5 BAND key
Use to select the broadcast band.
6 AUTO key
Use to select the auto tuning mode.
For VR-257, please refer to
separate booklet for SAP function.
For VR-257
DSP indicator
3
CONTROLS
KRF-V5010(K)COVER( 98.12.912:22 y[W 6
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KRF-V5010/V6010/V7010/VR-205/206/207/255/257
DISC SKIP
A/B
+100
1230
456
+10
789
VIDEO 1
MD/TAPE
TUNER
CD
PHONO
BASS BOOST
BAND
VIDEO2/MON. DVD/6CH INPUT
DIRECT
SOURCE
TUNING
P.CALL
POWER
REMOTE CONTROL UNIT
RC-R0407
AUTO
VOLUME UP
VOLUME DOWN
MULTI CONTROL
MUTE
SOUND
SETUP
MODE
LISTEN
UP
DOWN
1
2
3
4
5
6
0
8
9
7
!
@
Remote control unit (RC-R0407)
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
key is used to switch between the two
decks (A and B) of a double cassette
deck.
AUTO 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.
4 LISTEN MODE key
Use to select the listening mode.
5 SOUND key
Use to adjust the sound quality and ambi-
ence effects.
6 SETUP key
Use to select the surround sound settings.
7 POWER key
Use to switch the power ON/STANDBY
when the POWER is turned ON.
8 BASS BOOST key
Use to select the maximum adjustment
setting for the low frequency range.
9 SOURCE DIRECT key
0 MUTE key
Use to temporarily mute the sound.
! MULTI CONTROL key
Used to make a variety of settings.
@ VOLUME CONTROL key
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 Input selector keys
Use to select the receiver's input source.
3 Component operation keys
Use these keys to operate other compo-
nents with system control connections to
the receiver.
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.
4
CONTROLS
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 avail-
ability 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.
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 com-
mands automatically (MACRO PLAY).
3 VIDEO selector key
Selects the video inputs and sets the re-
mote control 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.
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.
AUDIO
SHIFT
MACRO
TV
VIDEO
GUIDE
REC
MUTE
VOLUME
TUNING/SKIP
THEME
FAV
MENU
FUNCTION
SHIFT
SETUP
INFO
ALT AUD
TV/SAT/VID
REPEAT
RANDOM
+100
DISPLAY
ENT
+10
LISTEN
MODE
SOUND
SUBWOOFER
23
1
56
4
89
7
0
1
2
3
7
8
9
4
5
6
0
!
#
^
*
&
%
@
$
8
7
6
BAND
P. CALL
P. CALL
POWER
Remote control unit (RC-R0607, RC-R0507)
KRF-V5010(K)
COVER(
98.12.9
12:22
y[W
7
background image
KRF-V5010/V6010/V7010/VR-205/206/207/255/257
5
DISASSEMBLY FOR REPAIR
1
2
2
4
4
4
3
3
x2
x2
x3
(VR-257)
1. Remove the 9 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)
KRF-V5010(K)COVER( 98.12.912:22 y[W 8

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