KENWOOD AR-404 KRF-A4030 A4030E A4030-S SERVICE MANUAL

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AR-404/KRF-A4030/A4030E/A4030-S
CIRCUIT DESCRIPTION
4. Microprocessor CXP82840-163Q, CXP82832-162Q (X09, IC51)
4-1 Microprocessor periphery block diagram diagram
FL DISPLAY ED51 KEY MATRIX X09, IC54 RDS IC X8 16SEGMENT 10GRID LED (STANDBY) X1 X3 LC72131 X3 X2 SAA6579/R E TYPE ONLY

10-BT-216GK

X05, IC2 TUNER

POWER RELAY SPEAKER A RELAY SPEAKER B RELAY X2

X09, IC51

X09, IC3 SELECTOR IC TC9164AN

Receiver u-COM CXP82840-163Q (E TYPE ONLY) CXP82832-162Q (OTHERS)

8.0MHz CE RESET TUNER MUTE AUDIO MUTE -10dB ATT X09, IC2 VOLUME IC X3 M62492FP X09, IC52 EEPROM

REMOCON SERIAL COMMUNICATION BUSY DATA X09, S516 VOLUME ENCODER X09, S518 MULTI ENCODER X09, S517 SELECTOR ENCODER

X2

BR24C02 E TYPE ONLY SD STEREO

X2

X2

KS0~KS7
KS0(81) KS1(80) KS2(79) KS3(78) KS4(77) KS5(76) KS6(75) KS7(74) KR0(12) SPEAKER B SPEAKER A DSW2(D505) TAPE2/MONITOR -

KR0~KR2
KR1(13) S.DIRECT *DIMMER/PTY POWER DSW1(D504) SOUND BALANCE KR2(14) BAND *P.CALL UP/DISPLAY *P.CALL DOWN/TA NEWS DSW3(507) DSW0(D510) AUTO MEMORY

X2

PTY,DISPLAY and TA/NEWS keys are only RDS version(E type).

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

H: Protection ON

L: STEREO L: TUNED L: ENABLE

H: LATCH

L: MUTE ON L: MUTE ON L: ATT ON

H: RELAY ON H: RELAY ON H: RELAY ON H: LED ON

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AR-404/KRF-A4030/A4030E/A4030-S
ADJUSTMENT
No. ITEM INPUT SETTINGS OUTPUT SETTINGS RECEIVER ALIGNMENT SETTINGS POINTS ALIGN FOR FIG. FM SECTION : EXCEPT E type SELECTOR : FM

1

DISTORTION (STEREO)

(C) 98.0MHz 1kHz, ±68.25kHz dev. Selector : L or R Pilot : ±6.75kHz dev. 70dBf (ANT. input) (A) 98.0MHz MONO 1kHz, ±75kHz dev. 25dBf (ANT. input) SELECTOR : FM

(B)

98.0MHz

IFT (TUNER UNIT: A1)

Minimum distortion (L or R)

(a)

2

TUNING LEVEL

(B)

MONO 98.0MHz

VR1 (TUNER UNIT)

Adjust VR1 and stop at the point where ED51 (TUNED) goes on.

(a)

FM SECTION : E type only

Adjust NO.1 and NO.2 repeat.

1

DISCRIMINATOR

(A) 98.0MHz 1kHz, ±40kHz dev. 70dBf (ANT. input) (A) 98.0MHz 1kHz, ±40kHz dev. MONO 70dBf (ANT. input) (C) 98.0MHz 1kHz, ±40kHz dev. Selector : L or R Pilot : ±6kHz dev. 70dBf (ANT. input) (A) 98.0MHz MONO 1kHz, ±40kHz dev. 25dBf (ANT. input)

Connect a DC voltmeter between CN2 1 and CN2 2 (TUNER UNIT)

MONO 98.0MHz

L4 (TUNER UNIT)

0V

(a)

2

DISTORTION (MONO)

(B)

MONO 98.0MHz

L5 Minimum distortion (TUNER UNIT)

(a)

3

DISTORTION (STEREO)

(B)

AUTO 98.0MHz

IFT (TUNER UNIT : A1)

Minimum distortion (L or R)

(a)

4

TUNING LEVEL

(B)

MONO 98.0MHz

VR1 (TUNER UNIT)

Adjust VR1 and stop at the point where ED51 (TUNED) goes on.

(a)

AUDIO SECTION Connect a DC Volumeter across CN11 (L) CN12 (R)

1

IDLE CURRENT

­

Volume: 0

VR1 (L) VR2 (R)

11 mV

(b)

SYSTEM CONNECTIONS
(a)
ANTENNA

(b)
Dc voltmeter
SPEAKERS

AM

R

L

+
GND FM 75

-

A

-

+

PLAY IN PLAY IN REC OUT PLAY IN REC OUT PLAY IN

L

R
PHONO CD AUX MD / TAPE1 TAPE2/ MONITOR

+
R

-

B

L

+

FM-MPX-SG

(A)
AC voltmeter Oscilloscope Distortion meter

FM-MPX-SG
Dummy antenna

POLAR SG

(C)

CN11, 12

AM SG

(D) (B)

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