background image
SPEAKERS
+
--
+
R
+
--
+
L
L
R
B
A
FM
75
GND
AM
ANTENNA
REC OUT
PLAY IN
AUX
MD / TAPE1
TAPE2/
MONITOR
PLAY IN REC OUT PLAY IN
PLAY IN
PHONO
CD
L
R
Phono jack
(E63-0068-15)
Miniature phone jack
(E11-0293-05)
Power cord bushing
(J42-0083-05)
AC power cord *
(E30-)
Lock terminal board
(E70-0052-05)
Phono jack
(E63-0047-15)
Phono jack *
(E63-)
Lock terminal board
(E70-0047-05)
AC outlet *
(E03-)
* Refer to parts list on page 21 .
70%
AUDIO RECEIVER
AR-404/KRF-A4030/
A4030E/A4030-S
SERVICE MANUAL
© 2000-1/B51-5595-00 (K/K) 3174
A SPEAKERS B
STANDBY
POWER
MULTI CONTROL
SOUND
SOURCE DIRECT
AUTO
BAND
MEMORY
INPUT SELECTOR
VOLUME CONTROL
UP
DOWN
BALANCE
PTY
TA/NEWS
DISPLAY
PHONES
ON/STANDBY
ON
OFF
TAPE 2/MONITOR
Indicator
(B12-0385-04)
Knob *
(K29-)
Front glass *
(B10-)
Panel *
(A60-)
Knob *
(K29-)
Knob *
(K29-)
Knob *
(K29-)
Knob *
(K29-)
Knob *
(K29-)
Phone jack
(E11-0127-05)
Knob *
(K27-)


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FM
(T90-0836-05)
(A70-1266-05): RC-R0709........KPMX
(A70-1267-05): RC-R0708........E1E2E3
indoor antenna
AC plug adaptor (1)
(E03-0115-05)
(1)
AM
(T90-0852-05)
loop antenna (1)
Batteries (R06/AA) (2)
*Use to adapt the plug on the power
cord to the shape of the wall outlet.
(Accessory only for regions where use
is necessary.)
Remote control unit (1)
AR-404/KRF-A4030/A4030E/A4030-S
2
CONTENTS / ACCESSORIES / CAUTIONS
CONTENTS / ACCESSORIES / CAUTIONS ............. 2
CIRCUIT DESCRIPTION ............................................3
ADJUSTMENT ............................................................6
PC BOARD ................................................................ 7
SCHEMATIC DIAGRAM .......................................... 11
EXPLODED VIEW ....................................................20
PARTS LIST..............................................................21
SPECIFICATIONS ....................................................27
Contents
Accessories
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 pro-
cedure to reset the microcomputer and return the unit to its
normal operating condition.
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.
Except for U.S.A. and Canada
With the power cord plugged in, turn the POWER key
OFF. Then, while holding down the ON/STANDBY
key, press 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.
Cautions


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AR-404/KRF-A4030/A4030E/A4030-S
3
CIRCUIT DESCRIPTION
1. BACK UP DATA AND INITIAL STATE
1-1 BACK UP
(1) AMP
· POWER .......................................STANDBY
· INPUT SELECTOR .....................TUNER
· BALANCE ...................................CENTER
· SPEAKER A RELAY ...................ON
· SPEAKER B RELAY ...................OFF
· VOLUME LEVEL ........................ -66dB
· BASS LEVEL...............................0dB
· TREBLE LEVEL ..........................0dB
· INPUT LEVEL .............................0dB
· SOURCE DIRECT.......................OFF
· TAPE2/MONITOR .......................OFF
(2) TUNER
· BAND ..........................................FM
· PRESET CHANNEL ...................."--"
· FREQUENCY ..............................LOWER LIMIT VALUE
K1...............................FM:87.50MHz
AM:530kHz
E1/E3 .........................FM:87.50MHz
AM:531kHz
· AUTO/MANUAL ..........................AUTO
· DISPLAY MODE .........................FREQUENCY
· E ON THRUST RECEIVING .......OFF
MODE
· T1 VOLUME ................................OFF(-66dB)
1-2 INITIAL SETTING
The initial setting is performed when the AC power cord
is plugged into the AC power wall out let while pressing
the power (STANDBY) key.
3. TEST MODE
3-1 SETTING
Turn the power ON while pressing the [BAND] key.
3-2 CANCELLATION
Unplug the AC power cord from an AC power wall outlet.
3-3 STARTING ACTIVE CONTENTS
· The power on state is entered whenever the power is
trued on while pressing the [BAND] key.
· All functions are initialized and activated in the all light-
ing mode.
· All lighting mode is canceled when any main unit's
keys are pressed. The normal display obtained when
the selector is set to TUNER then appears.
· E2PROM check(Etype only).
Check the reading data and the writing data of the
E2PROM after setting the test mode.
Display shows blank if the reading data and writing
data are the same. Display shows "LW" if the different
data will be written to E2PROM.
3-4 ACTIVE CONTENTS
· The mute control is not activated when the mode is
switched.
· The test mode will be terminated by plugging it off the
power source or by initializing it when all the settings
will be initialized.
· During the test mode, it can be operated in a special
manner that is deferent from an ordinary operation by
using the keys on the remote control or the main body
,specifically as shown in the following table (3-5 CON-
TENTS).
· Channel space will be no changed in the test mode.
3-5 CONTENTS
3-5-1 TUNER FUNCTION
WITH THE SELECTOR ON TUNER (E TYPE ONLY)
DESTINA-
TION
TUNER
TYPE
BAND
RECEIVING
CHANNEL
SPACE
IF
PLL
REFERENCE
FREQUENCY
RANGE
FREQUENCY
DSW3
(D507)
DSW2
(D505)
DSW1
(D504)
DSW0
(D510)
K,P
K1(1700)
FM
AM
87.5MHz~108.0MHz
530kHz~1700kHz
100kHz
10kHz
+10.7MHz
+450kHz
25kHz
10kHz
00
0
0
M,X
E1
FM
AM
87.5MHz~108.0MHz
531kHz~1602kHz
50kHz
9kHz
+10.7MHz
+450kHz
25kHz
9kHz
00
1
1
M
K2(1600)
FM
AM
87.5MHz~108.0MHz
530kHz~1610kHz
100kHz
10kHz
+10.7MHz
+450kHz
25kHz
10kHz
00
0
1
E
E3
RDS
FM
AM
87.5MHz~108.0MHz
531kHz~1602kHz
50kHz
9kHz
+10.7MHz
+450kHz
25kHz
9kHz
01
0
1
DSW0~DSW3(DIODE SW)
* 0: NONE DIODE,1:ADD DIODE
2. DESTINATION LIST OF TUNER
Bass and treble are selected while the sound key is
pressed.
3-5-2 AMP FUNCTION
WITH THE SELECTOR ON SOMETHING OTHER THAN
TUNER
· One touch max,min setting for Audio level.
SOUND KEY
KEY
MASTER VR.
BASS
TREBLE
BAND
-89dB
0dB
+10dB
AUTO
0dB
0dB
+10dB
MEMORY
-10dB
0dB
+10dB
OPERATION
FUNCTION
FL DISPLAY
REMARKS
KEY
(EX.)
PTY
S LEVEL
(1)(SLEVEL), (RF ATT)OFF
RF ATT
(2)(SLEVEL), (RF ATT)ON
(3)(NORMAL), (RF)ATT OFF
DISPLAY
P.CALL UP P.CALL FREQUENCY
-
TA/NEWS
PI CODE
PI 0000
PI CODE ON/OFF
(1)
(2)
(3)
CYCLE


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AR-404/KRF-A4030/A4030E/A4030-S
4
CIRCUIT DESCRIPTION
4. Microprocessor CXP82840-163Q, CXP82832-162Q (X09, IC51)
4-1 Microprocessor periphery block diagram diagram
FL DISPLAY
ED51
10GRID
16SEGMENT
X8
X3
X2
X2
X2
X2
X09, S516
SERIAL COMMUNICATION
DATA
BUSY
VOLUME
ENCODER
X09, S518
MULTI
ENCODER
X09, S517
SELECTOR
ENCODER
X2
X3
8.0MHz
CE
RESET
X3
X2
TUNER MUTE
AUDIO MUTE
X09, IC52
EEPROM
-10dB ATT
SD
STEREO
KS0~KS7
KR0~KR2
X1
10-BT-216GK
LED
(STANDBY)
POWER RELAY
SPEAKER A RELAY
SPEAKER B RELAY
X09, IC51
X09, IC3
SELECTOR IC
TC9164AN
REMOCON
CXP82840-163Q
(E TYPE ONLY)
CXP82832-162Q
(OTHERS)
Receiver u-COM
X09, IC54
RDS IC
X05, IC2
TUNER
SAA6579/R
E TYPE ONLY
E TYPE ONLY
LC72131
X09, IC2
VOLUME IC
M62492FP
BR24C02
KEY
MATRIX
KR0(12)
KR1(13)
KR2(14)
KS0(81)
-
S.DIRECT
BAND
KS1(80)
SPEAKER B
*DIMMER/PTY
*P.CALL UP/DISPLAY
KS2(79)
SPEAKER A
POWER
*P.CALL DOWN/TA NEWS
KS3(78)
-
-
-
KS4(77)
-
-
DSW3(507)
KS5(76)
DSW2(D505)
DSW1(D504)
DSW0(D510)
KS6(75)
TAPE2/MONITOR
SOUND
AUTO
KS7(74)
-
BALANCE
MEMORY
PTY,DISPLAY and TA/NEWS keys are only RDS version(E type).


background image
Pin No.
Pin name
I/O
Description
Active
1,2
G9,G10
O
FL grid control (9,10).
3
NC
-
u-Com +5V power supply.
4
RDS,CK
I
RDS IC clock input control. (E type only)
5
RDS,DT
I
RDS IC data input control. (E type only)
6
NC
I
u-Com +5V power supply.
7
VOL.ENC.A
I
Volume encoder A (CW) signal.
8
REMOCON
I
Remote control signal input.
9
VOL.ENC.B
I
Volume encoder B (CCW) signal.
10,11
NC
-
Unused.
12~14
KR0~KR2
I
Key return (0~2).
15
PROTECT
I
Protection detection signal input.
H: Protection ON
16
S.DATA
I/O
Serial communication data.
17
S.BUSY
I/O
Serial communication busy.
18
E2.DATA
I/O
E2 PROM data.
19
E2.CLK
O
E2 PROM clock.
20
SEL.ENC2 CW
I
Selector encoder A(CW) input.
21
SEL.ENC2 CCW2
I
Selector encoder B(CCW) input.
22
MLT. ENC3 CW3
I
Multi control encoder A(CW).
23
MLT. ENC3 CCW3
I
Multi control encoder B(CCW).
24
8/16
I
Serial communication 8bit/16bit changeover.
25~27
NC
-
Unused.
28
AV REF
-
Analog reference voltage (+5V).
29
S.LEVEL
I
Signal level A/D input. (E type only)
30~32
NC
-
Unused.
33
PLL.DO
I
PLL IC DO signal input. (E type only)
34
PLL.STEREO
I
TUNER stereo signal input.
L: STEREO
35
PLL.SD
I
TUNER SD signal input.
L: TUNED
36
RCV.CE
I
Receiver chip enable signal input.
L: ENABLE
37
AVSS
-
Analog ground.
38
RESET
I
u-Com reset.
39
EXTAL
I
Main clock(8MHZ).
40
XTAL
-
Main clock(8MHZ).
41
VSS
-
u-Com ground.
42
TX
-
Unused.
43
TEX
I
Ground.
44
VDD
-
Analog power supply (+5V).
45
VFDP
-
FL power supply(-33V).
46
SEL.STB
O
TC9164AF strobe.
H: LATCH
47
SEL/PLL.DT
O
Selector/PLL IC data signal output.
48
SEL/PLL.CK
O
Selector/PLL IC clock signal output.
49
PLL.CE
O
PLL IC CE signal output.
50
T.MUTE
O
Tuner mute control.
L: MUTE ON
51
A.MUTE
O
Audio mute control.
L: MUTE ON
52
NC
-
Unused.
53
10dB.ATT
O
Volume 10dB attenuator control.
L: ATT ON
54
VOL.DT
O
Volume IC(M62492FP) data control.
55
VOL.CK
O
Volume IC(M62492FP) clock control.
56
VOL.STB
O
Volume IC(M62492FP) strobe control.
57~59
NC
-
Unused.
60
RELAY.A
O
SP. relay A control.
H: RELAY ON
61
RELAY.B
O
SP. relay B control.
H: RELAY ON
62,63
NC
-
Unused.
64
POWER.RLY
O
Power relay control.
H: RELAY ON
65
STANDBY.LED
O
STANDBY LED control.
H: LED ON
66~71
NC
-
Unused.
72
LIMITER
O
Output power control at SP. (A+B). K/M/X only.
73
S.W MUTE
-
Unused.
74,75
KS6/KS7
O
Key scan 6,7.
76~81
P1/KS5~P6/KS0
O
FL segment 1~6/key scan 5~0.
82~88
P7~P13
O
FL segment 7~13.
89
VDD
O
u-Com +5V power supply.
90~92
P14~P16
O
FL segment 14~16.
93~100
G1~G8
O
FL GRID 1~8.
4.2 Microprocessor pin descriptions: X09,IC51
5
CIRCUIT DESCRIPTION
AR-404/KRF-A4030/A4030E/A4030-S
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