background image
673
606
610
652
671
621
607
672
616
620
605
eject
on/standby
mode
stereo amplifier/tuner/CD RD-VH7
standby
timer
phones
tuning
band
demo
auto
/mono
p.call
enter
input
stop
multi control
609
664
J1
J5
J2
J1
J2
J3
J4
A1
631
STEREO AMPLIFIER/TUNER/CD PLAYER
RD-VH7
SERVICE MANUAL
(VH-600/700)
© 1999-6/B51-5551-00 (K/K) 3133
Knob(EJECT) *
(K29-)
Dressing panel
(A21-3760-02)
Panel
(A60-1647-11)
Insulator assy
(J02-1444-24)
Dressing panel *
(A21-)
Dressing panel
(A21-3761-02)
Indicator
(B12-0360-04)
Knob
(K29-7556-04)
Escutcheon
(B07-2452-13)
Front glass
(B10-3488-03)
Knob(POWER)
(K29-7554-04)
Power cord bushing
(J42-0083--05)
Lock terminal board
(E70-0052-05)
Screw terminal board
(E70-0111-05)
Phono jack
(E63-1082-05)
Oscillating module
(W02-1114-15)
Rectangular receptacle
(E08-0311-05)
Phono jack
(E63-1089-05)
Side plate
(A50-1326-02)
Phono jack
(E63-1088-05)
Phono jack
(E63-0164-05)
AC power cord *
(E30-)
70%
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
In compliance with Federal Regulations, following are repro-
ductions of labels on, or inside the product relating to laser
product safety.
*Refer to parts list on page 31.
RD-VH7(K) COVER1,1P( 99.10.30 2:43 PM y[W 2


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TIMER
SLEEP
POWER
REPEAT
123
456
789
+10
0
+100
RANDOM
P.MODE
CHECK
CLEAR
MUTE
CD
MD
TAPE
INPUT
AUTO/MONO
TUNER/BAND
DISPLAY
MEMORY
TONE
REMOTE
CONTROL
UNIT
RC-RP0702
N.B.
TAPE
MD
P.CALL
O.T.E.
VO
LU
ME
CO
NT
RO
L
TIMER
SLEEP
POWER
REPEAT
123
456
789
+10
0
+100
RANDOM
P.MODE
CHECK
CLEAR
MUTE
CD
MD
TAPE
INPUT
AUTO/MONO
TUNER/BAND
DISPLAY
MEMORY
TA/NEWS
PTY
TONE
REMOTE
CONTROL
UNIT
RC-RP0702E
N.B.
TAPE
MD
P.CALL
O.T.E.
VO
LU
ME
CO
NT
RO
L
AM loop antenna (1)
(T90-0842-05)
Remote control unit (1)
(A70-1282-05) : RC-RP0702
Battery cover (A09-1148-08)
Remote control unit (1)
(A70-1283-05) : RC-RP0702E
Battery cover (A09-1148-08)
Batteries (R6/AA) (2)
Replacement front feet (2)
(J02-0130-05)
Front feet replacement tool
(Allen wrench) (1)
(W01-0084-05)
FM indoor antenna (1)
(T90-0841-05)
RD-VH7
2
CONTENTS / ACCESSORIES
CONTENTS / ACCESSORIES .................................. 2
DISASSEMBLY FOR REPAIR....................................3
BLOCK DIAGRAM ......................................................4
CIRCUIT DESCRIPTION ............................................5
CD MECHANISM DESCRIPTION ............................11
ADJUSTMENT ..........................................................14
PARTS DESCRIPTIONS ..........................................15
PC BOARD ...............................................................16
SCHEMATIC DIAGRAM ...........................................19
EXPLODED VIEW ....................................................29
PARTS LIST..............................................................31
SPECIFICATIONS ......................................Back cover
Contents
Accessories
Operation to reset
The microcomputer may fall into malfunction (im-
possibility to operate, erroneous display, etc.)
when the power cord is unplugged while power is
ON or due to an external factor. In this case, ex-
ecute the following procedure to reset the micro-
computer and return it to normal condition.
RD-VH7
Unplug the power cord from the wall AC outlet
and, while holding the "
7 stop" key depressed,
plug the power cord again.
÷ If a CD has been loaded in the unit, it will be
ejected automatically.
÷ Please note that resetting the microcomputer
clears the contents stored in it returns it to condition
when it left the factory.
System configuration
SYSTEM
CD
CASSETTE
SPEAKER
NAME
RECEIVER
DECK
VH-600
RD-VH7
-
LS-VH7
VH-700
RD-VH7
X-VH7
LS-VH7
RD-VH7(K) COVER1,1P( 99.10.30 2:43 PM y[W 3


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RD-VH7
3
DISASSEMBLY FOR REPAIR
REMOVE CD MECHANISM
After remove insulator ass'y, then remove some LR side board.
Next remove the top and the bottom boards.
1) Remove the 6 screws
1, then remove the front panel.
2) Remove the 6 screws
23, then remove the CD mechanism.
When assemble the front panel, insert the phone jack with tak-
ing care
4.
ELECTRIC CHECK
After assemble the sub panel and the front panel.
1) Remove the 8 screws
5, 6, then remove PCB(X09:B/4), PCB(X14:A/6).
2) Remove the 2 screws
7, the 3 PC supports8, then remove the CD mechanism.
3) After assemble PCB (X09:B/4) on the main PCB with the rear panel. then connect GND between the rear panel , the anten-
na and the CD mechanism with 3 alligator clip wires(
0).
5 Remove the MULTI CONTROL knob with a string(wires etc)
-.
1
2
1
x2
x4
4
2
2
3
3
3
6
7
7
11
(X14)
(A/6)
MAIN
PCB
(X09)
8x3
5x3
5x2
5
9
10
10
10
6
(X09)
(B/4)
RD-VH7(K) COVER1,1P( 99.10.30 2:43 PM y[W 6


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RD-VH7
4
BLOCK
DIAGRAM
HEADPHONE
J3
12V
AVR
TUNER
PACK
AM,FM
ANTENNA
FAN
X-Y POSITION
N.B.
BASS
TRE.
THERMAL SW
BIAS Cont.
LEVEL SENSOR
PROTECTION
(TILT)SENSOR
STK499-090
MAIN AMP.
Cont.
SYSTEM
TAPE PLAY
MD REC
TAPE REC
T.MUTE
J1
TONE
SELECTOR
REC OUT
A1
J1
Q1-3
IC2
ATT
INPUT
VOLUME
MASTER
IC3
BU4066BCF
A.MUTE
IC1
K3
K2
J5
J2
Q1,2
Q7,8
IC8
Q5,6,10
PH1-4
M30622MC-570FP
MAIN u-COM
LED
TACT KEY
M.C/ENCODER
REMOCON
SENSOR
S2-13
S1
A2
D11,12
DISPLAY u-COM
HD6433297A17F
LCD ASS'Y
IC4
IC5
-13V
AVR
-10V
AVR
FAN+B
AVR
+6.3V
AVR
+5V
AVR
+5.6V
AVR
+5.6V
AVR
MUTE
Q12
CD MECHA DRIVER
FAN
LCD
MUTE
BIAS CHANGE
TUNER PACK
AUDIO
CD
MECHA SENSOR
LCD
DISPLAY u-COM
LED
u-COM
AMP. +B
AMP. -B
Q20
Q33
Q17
Q23-26
IC10
IC6
Q22
Q28
DSP/DAC
SERV0
RF AMP
5ch BTL
DISC
SENSOR
D10
D11
D18
K1
T1
BACK UP TRANS.
MAIN TRANS.
DIGITAL
DIGITAL
ANALOG
IC400
IC401
IC402
M
PICKUP
M
MOTOR
DISC
SLED
MOTOR
D1-4,Q1-4
S1
CD SLOT IN
MECHANISM (CDM-34)
200mV/100
REC OUT
200mV/47K
INPUT
9.5V/6
SP.OUTPUT (2CH)
S.W. OUT
SPEAKER
LC75396NE
IC403
A4
MD PLAY
AUX
OPTICAL
OUT
(+5V)
RDS
AC IN
LOADING
MOTOR
M
+
+
+
+
A-D
RD-VH7
(X14)
(X09)
(X14)
RD-VH7(K)
COVER1,1P(
99.10.30
2:43
PM
y[W
7


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1. INITIAL SETTING
1-1 INITIAL CONDITIONS
(1) AMP
POWER
OFF
PROTECTION
NO DETECTED
MUTE
OFF
SELECTOR
TUNER
VOLUME
15
BALANCE
CENTER
NB
2
BASS
0
TREBLE
0
MD INPUT
0 (-6dB)
TAPE INPUT
0 (-6dB)
AUX INPUT
0 (-6dB)
MULTI WINDOW
AUTO
(2) TUNER
BAND
FM
Pch MEMORY
REFER TO (5)
LAST Pch
­ ­
LAST FREQ.
LOWER LIMIT VALUE OF
EACH BANDS
AUTO/MONO
AUTO
AUTO PRESET (MEMORY)
­
E ON THRUST RECEIVING MODE
OFF
RDS DISPLAY
PS
(3) CLOCK, TIMER
CLOCK
STOP, AM 12:00
PROG. 1,2
ON TIME
AM12:00
OFF TIME
AM12:00
PLAY MODE
PLAY
SOURCE
TUNER
Pch
01ch
REC MODE
TAPE
O. T. T.
OFF (AM7:00)
TIMER OPERATION MODE
OF F
SLEEP TIMER
OFF(5)
A. P. S.
OFF
(4) CD
PLAY MODE
TRACK
REPEAT
OFF
RANDOM
OFF
OPERATION MODE
STOP
TIME DISPLAY
SINGLE TIME
(5) TUNER PRESET FREQUENCY
ch
TUNER DESTINATION
E1
K1
E3
1
FM
97.5MHz FM
97.5MHz
FM
97.5MHz
2
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
3
FM
89.1MHz FM
89.1MHz
FM
89.1MHz
4
FM
108.0MHz FM
108.0MHz
FM
108.0MHz
5
FM
90.0MHz FM
90.0MHz
FM
90.0MHz
6
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
7
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
8
FM
87.5MHz AM
1610KHz
FM
87.5MHz
9
AM
1602KHz AM
1700KHz
AM
1602KHz
10
AM
999KHz AM
1000KHz
AM
999KHz
11
AM
630KHz AM
630KHz
AM
630KHz
12
AM
1440KHz AM
1440KHz
AM
1440KHz
13
FM
106.0MHz FM
106.0MHz
FM
106.0MHz
14
AM
531KHz AM
530KHz
AM
531KHz
15
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
16
FM
98.0MHz FM
98.0MHz
FM
98.0MHz
17
FM
98.5MHz FM
98.5MHz
FM
98.5MHz
18
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
19
AM
990KHz AM
990KHz
AM
990KHz
20
FM
97.7MHz FM
97.4MHz
FM
97.7MHz
21
AM
531KHz AM
530KHz
AM
531KHz
22
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
23
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
24
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
25
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
26
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
27
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
28
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
29
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
30
FM
106.0MHz FM
106.0MHz
FM
106.0MHz
31
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
32
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
33
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
34
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
35
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
36
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
37
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
38
FM
87.5MHz FM
87.5MHz
FM
87.5MHz
39
FM
108.0MHz FM
108.0MHz
FM
108.0MHz
40
AM
999KHz AM
1000KHz
AM
999KHz
2. BACKED UP ITEMS
AC POWER OFF
(1) AMP
POWER
BACK UP
PROTECTION
CANCELLED
MUTE
OFF
SELECTOR
BACK UP
VOLUME
BACK UP
BALANCE
BACK UP
5
RD-VH7
CIRCUIT DESCRIPTION
1p 99.10.30 3:08 PM y[W 1