BLOCK DIAGRAM
KMD-671R

2

A8V
SW5V
UP
BACK
and
E-VOL
MPX
CH
MD
AM
FM
VDD
QUAL
LEVEL
MP IN
IC2 Q21,22
MUTE
MUTE DRIVER
Q19,20
IC8,
Q23
200mV
170mV
1200mV
1200mV
BUFF
Q29
FM+B
AM+B
Q27,28
TUN5V
AUDIO OUT
VDD 5V
IF1/IF2/PLL+B
AM+B
FM+B
S-METER
SD
ANT
S 5.0V
A8V
BU5V
LOAD
LOE SW
LOS SW

MD

EJECT
M STOP
M RST
M MUTE
M DATA
M CLK
BU5V
R CLK
R DATA
QUAL
NOISE
AFC
SD
S-METER
AMP
NOISERDS
DECODER
IC10
u-COM
IC1
IC7,Q33
RST
L DATAS
L CLK
L DATAL
REMO
PANEL
Q24
BU5V
PAN 5V SW
PANEL
IC2
PAN 5V
RST SW

(X13)

IC1
REMOTE
CONTROL
WITH
LCD DRIVER
KEY MATRIX
LCD
ILL. SW
SW5V
PAN 5V
MD SERVO
AVR
IC6
A.8V AVR
IC3,Q5
A.8V AVR
ON/OFF
SW
Q3,4
ILLUMI AVR
Q7-9

KMD-671R(M,E)

P-CON
BACK UP
BU5V
SW5V BU5V
Q1,2
P-CON
Q13-16
SP-OUT
TEL-MUTE
ACC
PROTECTION
THERMAL
POWER IC
SVR SW
3529mV
AM
FM
773mV
1258mV
CD-CH
MD
3529mV
PRE OUT
IC4
MUTE
SDA
SCL
PHONE
TEL-MUTE
Q18
ACC DET.
ACC DET.
SVR
BU DET.
DSI
Q10
Q17
BU DET.
Q34
DSI
SDA
SCL
Q30-32
S MUTE
MP OUT
RST
DATA C
REQ H
CH-CON
DATA H
REQ C
CLK
MUTE

CH

L INH
L CE
SERVO AVR
ON/OFF SW
Q6
S 5.0V
A8V
P-ANT
SW5V BU5V
VLCD AVR
Q4
Q2,3
KMD-671R(E)

A1

Q25,26

TUNER

SCL
SDA
CONTENTS

BLOCK DIAGRAM .............................................................. 2

COMPONENT DESCRIPTION ........................................... 3

MICROCOMPUTER’S DESCRIPTION............................... 4

ADJUSTMENT .................................................................... 6

PC BOARD ......................................................................... 7

SCHEMATIC DIAGRAM ................................................... 11

EXPLODED VIEW ............................................................ 17

PARTS LIST...................................................................... 18

SPECIFICATIONS ...............................................Back cover