Kenwood AR-304 Service manual

DIMMER

P.CALL

P.CALL

A

SPEAKERS

B

MUTE

BASS BOOST

TAPE2/

MONITOR

SOURCE

DIRECT

BALANCE

SOUND

MULTI CONTROL INPUT SELECTOR

VOLUME CONTROL

DOWN

UP

AV SURROUND RECEIVER

PHONES

BAND

AUTO

MEMORY

STANDBY

ON / STANDBY

POWER

-ON OFF–

TRAIT

REC OUT

PLAY IN

AUX

MD / TAPE1

TAPE2/

MONITOR

PLAY IN

REC OUT

PLAY IN

PLAY IN

PHONO

L

R

FM
75Ω

GND

AM

SPEAKERS

+

--

+

R

+

--

+

L

L

R

B

A

SUBWOOFER
PRE OUT

SYSTEM CONTROL

SL16

(

XS 8

)

AC 220 ­240V

AC 110 ­120V

AC 220 ­240V

AC 110 ­120V

50 s
FM 50kHz
AM 9kHz

DE-EMPHASIS
CHANNEL
SPACE

75 s

FM 100kHz

AM 10kHz

SWITCHED TOTAL

150W MAX

AC 110 -120V/220 -240V ‘

50/60HZ

AUDIO VIDEO SURROUND RECEIVER

AR-304/KRF-A4020/

A4020E/A4020W

SERVICE MANUAL

Indicator
(B12-0334-14)

KENWOOD badge
(B43-0302-04)

Knob
(K27-2185-04)

Knob
(K29-7365-12)

Phone jack (3P)
(E11-0295-05)

Front glass
(B10-3475-02)

Knob
(K29-7365-12)

Knob
(K29-7310-03)

Knob
(K29-7307-14)

© 1999-1/B51-5501-00 (K/K) 3390

Panel
(A60-1585-01)

Foot
(J02-1167-03)

Knob
(K29-7306-14)

AC power cord
(E30-2592-15)

Slide switch
(S62-0034-05)

Phono jack
(E63-0068-15)

Lock terminal board
(E70-0080-05)

Metallic cabinet
(A01-3533-01)

Phono jack
(E63-0173-05)

Phono jack
(E63-1016-05)

Miniature phone jack
(E11-0347-05)

Slide switch
(S62-0034-05)

Slide switch
(S62-0001-05)

Lock terminal board
(E70-0068-05)

Illustration is KRF-A4020 Mtype.

Power cord bushing
(J42-0083-05)

AC outlet
(E03-0149-05)

Please check the tuner PCB number before change C42,43 and X1 with new one .

DIMMER

BASS BOOST

TUNER CD

1 2 3

4 5 60

789+10

TAPE2/

MONITOR

TA/NEWSPTY DISPLAY AUX

MULTI CONTROL

MD/TAPE1

REMOTE CONTROL UNIT

RC-R0708

PHONO

6 7

¡

2

TUNING

DISC SKIP

%

VOL. DOWN

VOL. UP

MEMORY

S.DIRECT

SOUND BALANCE

fi

1 ¢P.CALL4

BAND AUTO

A/B +100

POWER

fi

fi

MUTE

DIMMER

BASS BOOST

TUNER CD

1 2 3

4 5 60

789+10

TAPE2/

MONITOR

TA/NEWSPTY DISPLAY AUX

MULTI CONTROL

MD/TAPE1

REMOTE CONTROL UNIT

RC-R0709

PHONO

6 7

¡

2

TUNING

DISC SKIP

%

VOL. DOWN

VOL. UP

MEMORY

S.DIRECT

SOUND BALANCE

fi

1 ¢P.CALL4

BAND AUTO

A/B +100

POWER

fi

fi

MUTE

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)

Remote control unit (1)

Remote control unit (1)

(A70-1267-05) : RC-R0708....ETQE1

(A70-1266-05) : RC-R0709....KPMX

Battery cover (A09-1123-08)

Battery cover (A09-1123-08)

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.)

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 micro­computer 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

AR-304/KRF-A4020

CONTENTS / ACCESSORIES / CAUTIONS

Contents

CONTENTS/ACCESSORIES/CAUTIONS...................2

CIRCUIT DESCRIPTION.............................................3

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

WIRING DIAGRAM......................................................7

PC BOARD ..................................................................8

Accessories

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

EXPLODED VIEW .....................................................21

PARTS LIST...............................................................22

SPECIFICATIONS.....................................................28

Cautions

2

AR-304/KRF-A4020

DESTINA

TION

TUNER

TYPE

BAND

RECEIVING

FREQUENCY

RANGE

CHANNEL

SPACE

IF

PLL

REFERENCE

FREQUENCY

DSW3

(D507)

DSW2

(D505)

DSW1

(D504)

DSWO
(D510)

K,P K1(1700)

FMAM87.5MHz~108.0MHz

530kHz~1700kHz

100kHz

10kHz

+10.7MHz

+450kHz

25kHz
10kHz

0000

M.X E1

FMAM87.5MHz~108.0MHz

531kHz~1602kHz

50kHz

9kHz

+10.7MHz

+450kHz

25kHz

9kHz

0011

M K2(1600)

FMAM87.5MHz~108.0MHz

530kHz~1610kHz

100kHz

10kHz

+10.7MHz

+450kHz

25kHz
10kHz

0001

E,T

E3

RDS

FMAM87.5MHz~108.0MHz

531kHz~1602kHz

50kHz

9kHz

+10.7MHz

+450kHz

25kHz

9kHz

0101

Q

Q1

RDS

FML

FMH

AM

65.0MHz~74.0MHz

87.5MHz~108MHz
531kHz~1602kHz

10kHz
50kHz

9kHz

+10.7MHz
+10.7MHz

450kHz

5kHz
5kHz
9kHz

1011

DSW0~DSW3(DIODE SW) * O: NONE DIODE,1:ADD DIODE

OPERATION KEY FUNCTION FL DISPLAY REMARKS

(EX.)

PTY

S LEVEL (1)(SLEVEL),(RF ATT)OFF

(1)

RF A T T (2)(SLEVEL),(RF ATT)ON

(2) (3)

(3)(NORMAL),(RF)ATT OFF

CYCLE

DISPLAY P.CALL UP

BASS BOOST P.CALL DOWN P.CALL FREQUENCY

TA/NEWS PI CODE PI 0000 PI CODE ON/OFF

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

• BASS BOOST......................OFF

• SOURCE DIRECT ...............OFF

• TAPE2/MONITOR................OFF

• SL16/XS8.............................SL16

2. DESTINATION LIST OF TUNER

(2) TUNER

• BAND...................................FM

• PRESET CHANNEL............."--"

• FREQUENCY.......................LOWER LIMIT VALUE

K1 .................................FM:87.50MHz/AM:530kHz

E1/E3............................FM:87.50MHz/AM:531kHz

Q1.................................FM:65.00MHz/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

1 The power on state is entered when the power is

tuned on while pressing the [BAND] key.
All functions are initialized and activated in the all
lighting mode.

2 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.

3 E2PROM check(E,T,Q,type 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

1 The mute control is not activated when the mode is
2 The test mode will be terminated by plugging it off the

3 During the test mode, it can be operated in a special

switched.
power source or by initializing it when all the settings

will be initialized.
manner that is different 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
CONTENTS).

4 Channel space will be no changed in the test mode.

3-5 CONTENTS

3-5-1 TUNER FUNCTION

WITH THE SELECTOR ON TUNER (E/T/Q TYPE ONLY)

3-5-2 AMP FUNCTION

WITH THE SELECTOR ON SOMETHING OTHER THAN
TUNER
1 One touch max,min setting for Audio level.

KEY MASTER VR.

BAND -89dB -10dB -10dB
AUTO 0dB +10dB +10dB
MEMORY -10dB 0dB 0dB

Bass and treble are selected when the sound key is
pressed.

2 Tuned light

XS8/SL16 TUNED LIGHTS TUNED LIGHTS

SWITCH OFF ON

SOUND KEY

BASS TREBLE

XS8 SL16

3

AR-304/KRF-A4020

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/T/Q TYPE ONLY)

CXP82832-162Q

(OTHERS)

Receiver µ

X09, IC54
RDS IC

X05, IC2
TUNER

SAA6579/R
(PHILIPS)

E/T/Q TYPE ONLY

E/T/Q TYPE ONLY

LC72131

X09, IC2
VOLUME IC

M62492FP

X24C02

(XICOR)

KEY

MATRIX

KR0(12) KR1(13) KR2(14)

KS0(81) BASS BOOST 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) MUTE BALANCE MEMORY

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

CIRCUIT DESCRIPTION

4. Microprocessor CXP82840-163Q, CXP82832-162Q (X09, IC51)

4-1 Microprocessor periphery block diagram diagram

4

AR-304/KRF-A4020

CIRCUIT DESCRIPTION

4-2 Pin descriptions

Pin No. Pin name I/O Description Active

1,2 G9,G10 O FL grid control (9,10).

3 NC - Unused.
4 RDS,CK I RDS IC clock input control. (E/T/Q type only)
5 RDS,DT I RDS IC data input control. (E/T/Q type only)
6 NC I Unused.
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.ENC.A I Selector encoder A(CW) input.
21 SEL.ENC.B I Selector encoder B(CCW) input.
22 MULTI.ENC.A I Multi control encoder A(CW).
23 MULTI.ENC.B I Multi control encoder B(CCW).
24 8/16 I Serial communication 8bit/16bit changeover.

25~27 NC - Unused.

28 VDD - Analog power supply (+5V).
29 S.LEVEL I Signal level A/D input. (E/T/Q type only)

30~32 NC - Unused.

33 PLL.DO I PLL IC DO signal input. (E/T/Q type only)
34 PLL.ST 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 strove. 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.ST O Volume IC(M62492FP) strove 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.

5

AR-304/KRF-A4020

No. ITEM INPUT SETTINGS

ALIGN FOR

FIG.

1

DISTORTION

(STEREO)

(C)

98.0MHz 1kHz,

±68.25kHz dev. Selector

: L or R Pilot : ±6.75kHz
dev. 70dBf (ANT. input)

(B) 98.0MHz

IFT
(TUNER
UNIT: A1)

Minimum distortion

(L or R)

(a)

2 TUNING LEVEL

(A)

98.0MHz MONO 1kHz,
±75kHz dev.

25dBf (ANT. input)

(B)

MONO

98.0MHz

VR1

(TUNER UNIT)

Adjust VR1 and

stop at the point

where ED51

(TUNED) goes on.

(a)

1 DISCRIMINATOR

(A)

98.0MHz 1kHz,
±40kHz dev.

Connect a DC

voltmeter
between CN2
1 and CN2 2

(TUNER UNIT)

MONO

98.0MHzL4 (TUNER UNIT)

0V (a)

3

DISTORTION

(STEREO)

98.0MHz

(C)

1kHz, ±40kHz dev.

Selector : L or R

Pilot : ±6kHz dev.

70dBf (ANT. input)

(B)

AUTO

98.0MHz

IFT

(TUNER

UNIT : A1)

Minimum distortion

(L or R)

(a)

2

DISTORTION

(MONO)

(A)

98.0MHz 1kHz,

±40kHz dev. MONO

70dBf (ANT. input)

(B)

MONO

98.0MHz

L5

(TUNER UNIT)

Minimum distortion

(a)

4

1 IDLE CURRENT – Volume: 0 11 mV

VR1 (L)

VR2 (R)

Connect a DC

Volumeter

across

CN11 (L)

CN12 (R)

TUNING LEVEL

(A)

98.0MHz MONO 1kHz,
±40kHz dev.

25dBf (ANT. input)

(B)

MONO

98.0MHz

VR1

(TUNER UNIT)

Adjust VR1 and

stop at the point

where ED51

(TUNED) goes on.

(a)

(b)

FM SECTION : EXCEPT E,T,Q type SELECTOR : FM

FM SECTION : E,T,Q type only SELECTOR : FM Adjust NO.1 and NO.2 repeat.

70dBf (ANT. input)

AUDIO SECTION

REC OUT

PLAY IN

AUX

MD / TAPE1

TAPE2/

MONITOR

PLAY IN

REC OUT

PLAY IN

PLAY IN

PHONO

L

R

GND

AM

SPEAKERS

+

--

+

R

+

--

+

L

L

R

B

A

SUBWOOFER
PRE OUT

AC 220 ­240V

AC 110 ­120V

AC 220 ­240V

AC 110 ­120V

SWITCHED TOTAL

150W MAX

(A)

(B)

(C)

(D)

AM SG

FM-MPX-SG

FM-MPX-SG

POLAR SG

AC voltmeter

Oscilloscope

Distortion meter

Dummy antenna

(b)

(a)

Dc voltmeter

CN11, 12

ADJUSTMENT

OUTPUT

SETTINGS

RECEIVER

SETTINGS

ALIGNMENT

POINTS

SYSTEM CONNECTIONS

6

15

1

15

1

AM: 9kHz

FM: 50kHz

50uS

AM: 10kHz

FM: 100kHz

75uS

2

1

2

1

XS8

SL16

SBUSY

SDATA

31 31

1

1

31

(K,P)

(M)
(Q)

(X)

(T,E)

: AC120V 60Hz
: AC110-120V/220-240V~

50/60Hz
: AC220V~ 50Hz
: AC240V~ 50Hz
: AC230V~ 50Hz

2

1

F2

F1

F3

120V

110-

240V

220-

15 15

11

F4

F5

1

66

1

1

5

2

1

2

1

1

1

4

4

31

CN1 CN7

GND

CH SPACE
DE-EMPHASIS

S1

J1AM ANT

FM75

S1

POWER
SW

WH1 CN2

Rch 4

+

2Lch

+

3Rch

+

1Lch

+

J5

FRONT
SPEAKERS A

SPEAKERS B

FRONT

S4

SYSTEM
CONTROL
SW

J6

SYSTEM
CONTROL

PRE OUT

J4

SUB WOOFER

Lch 5

Rch 6

Lch 3

Rch 4

J3

Lch 1

Rch 2

Lch 1

Rch 2

PHONO

J1

MD/TAPE
PLAY IN

TAPE2/MONITOR
REC OUT

PLAY IN

Lch 3

Rch 6

Lch 5

Rch 4

J2

REC OUT

Rch 2

Lch 1

MD/TAPE

AUX

CD

CN8 CN9

WH51

CN10

CN1

J8

AC
OUTLET

USED
(M)TYPE

(E,E2)TYPE

USED

T1

S2S3

WH4

CN6

WH2

WH3

DESTINATION

U.K.

EUROPE

COUNTRY

T

E

2-71

UNIT No.

ABB.

UNIT No.

KRF-A4020 (X05-5052-71)

COUNTRY

RUSSIA

Q

ABB.

3-81

DESTINATION

KRF-A4020W (X05-4983-81)

EUROPE E1 2-71

ABB.COUNTRY

DESTINATION

KRF-A4020E (X05-4982-71)

COUNTRY

UNIT No.

ABB.

GENERAL MARKET

EUROPE

U.K.

AUSTRALIA

T
E

2-71

M
X

0-21
0-71

CANADA P

KRF-A4020 (X05-498X-XX)

DESTINATION

UNIT No.

DESTINATION

AR-304 (X05-5050-10)

COUNTRY

U.S.A.

UNIT No.

ABB.

K

0-10

KRF-A4020W (X09-6143-81)

DESTINATION
COUNTRY

RUSSIA

ABB.

Q

3-81

UNIT No.

KRF-A4020 (X09-614X-XX)

GENERAL MARKET

DESTINATION

KRF-A4020E (X09-6142-70)

DESTINATION

EUROPE

COUNTRY

EUROPE

AUSTRALIA

U.K.

COUNTRY

2-70E

UNIT No.

ABB.

E1 2-70

M
T

X

0-21
0-51

0-71

UNIT No.

ABB.

AR-304 (X09-6310-10)

DESTINATION
COUNTRY

U.S.A.

CANADA

ABB.

K
P

0-10

UNIT No.

KRF-4020W (X09-6143-81)

DESTINATION

COUNTRY

RUSSIA

3-81

UNIT No.

Q

ABB.

COUNTRY

DESTINATION

KRF-4020E (X09-6142-70)

EUROPE

U.K.

EUROPE

AUSTRALIA

GENERAL MARKET

KRF-4020 (X09-614X-XX)

DESTINATION

COUNTRY

CANADA

DESTINATION

COUNTRY

U.S.A.

X

0-71

UNIT No.

2-70E1

ABB.

2-70

0-51

E

T

0-21

UNIT No.

M

ABB.

UNIT No.

0-10

K
P

ABB.

AR-304 (X09-6310-10)

WH52

TAPE2/MONITOR

E2 E3

HEADPHONE

ABB.

COUNTRY

2-71

0-51

EUROPE

U.K.

E

T

KRF-A4020 (X09-631X-XX)

UNIT No.

DESTINATION

J7

UNIT No.

KRF-4020 (X09-631X-XX)

EUROPE

U.K.

T
E

DESTINATION

COUNTRY ABB.

0-51
2-71

TUNER UNIT
(X05-XXXX-XX)

USED (M)TYPE

(X09- ) (F/8)

USED EXCEPT (K,P)TYPE

(X09-6XXX-XX) (A/8)

(X09- ) (B/8)

DISPLAY UNIT

AUDIO UNIT

(X09- ) (C/8) (X09- ) (G/8)

(X09- ) (D/8)

(X09- ) (H/8)

(X09- ) (E/8)

USED EXCEPT (M)TYPE

USED (M)TYPE

KRF-A4020/A4020E/A4020W

AR-304

7

WIRING DIAGRAM

AR-304/KRF-A4020

A BDCE

R70

R40

C53

OFF

ON

W5
W6
W7

W4

W19

W22

W21

W20

W14

W17

W10

W1

W3

(W)

(G)

AM RF

VT

PLL

FM IF

AM STEREO

FM DET MPX

Vref

TUNED

FM

MPX.FIL.

T.METER

C17

W24

C28C38

C29

C37

W9

W16

VR1

CF1

CF2

C10

W13

W23

CF3

L9

L2

R50

R44

R71

C49

C46

C72

C32

C14

C15

C67

C55

W25

L3

C62

C66

C65

W8

W11

W15

L1

C73

C7

R81

C27

C16

C19

C21

C23

L6

L7

C48

R41

L4

R77

R61

C59

R2

X2

X1

111

22

12

1

15

1

1

8

16

30

2

151

E1

CN1

D6

A1

IC1

D4

D3

D9

D5

IC2

CN2

J1

S1

CH. SPACE

DE-EMPHASIS

ANTENNA

X05-498X-XX/X05-505X-XX

C69

D16

R90

W86

R80

R82

R12

C77

R60

R59

R58

W52

C86

EB

EB

D7

D13

Q14

Q15

C88

R89

C87

R43

C6

C78

C75

C11

C39

C42

C52

C47

C50

C51

C43

C44

R55

R56

R53

R54

R57

R51

R52

R49

R42

R11

R1

R7

C76R83

R88

D1

C84

C35

R32/W60

C8

C36

W85

C5

C1

C2

C3

C82

C12

C25

C26

C24

C41

C40

C30

C22

C18

C20

R14

R15

R16

R10

R4

R5

R8

R9

R6

R35

R23

R28

R25

R27

C31

C79

W51

W80

R85

C85

R86

R87

EB

EB

Q2

Q1

D11

C92

C93

C91

C89

C83

R29

R48

R34R33

R84

R79

R47

W84

R45

R46

R31

R36

W62

R64

R65

R30

C80

C34

C33

R37

EB

EB

EB

Q3

Q4

Q7

C68

W2

L5

C54

R75

C90

C58

C56

C57

C61
C60

R66

R63

R62

R69

R67

R68

R18

R19

R20

C63

W59

W81

C81

C45

W56

R17

R39

R38

R76

W83

R74

R78

W61

W55

R72C71

R73

C70

W82

C64

W54

16 9

18

EB

EB

EB

EB

EB

EB

Q11

Q10

IC3

Q9

Q8

Q12

Q6

D8

PC BOARD(Component side view)

1

TUNER UNIT

2

3

4

5

6

7

8

Refer to the schematic diagram for the value of resistors and capacitors.