Sanyo FXR-110GD, FXR-110GD/A Service Manual

FILE NO.

SERVICE MANUAL COMPACT PANEL DETACHABLE ~ FXR-IIOGD

DIN-SIZE FM-STEREO/MW ETR

FXR-llOGD/A

CASSETTE RECEIVER WITH

(GENERAL)

AUTO-TRAVEL/PRESET TUNING

PRODUCT CODE No.

FXR-I 10GD

14758922

FXR-I 10GD/A 14758923

Specifications

FM TUNER SECTION

Frequency Range

.................... ... . .. . . . ...87.5 MHz - 108

MHz

Maximum Output Power ................25W x 2 or

Usable Sensitivity ......... . . . . . . . . . . . . . . . . . . . . ..l OdBf / 750hms

7.5WX4

Frequency Response (+ 3 dB) . . . . . . . . . . . ..40Hz - 12.5 kHz

Load Impedance .... ........................4Q (4f2 - 8Q allowable)

Signal to Noise ratio . . . . . . . . . . . . . . .............55 dB

Selectivity (t 400 kHz)

.................. .. ...65 dB

Stereo Separation (1 kHz) . . . ...............30 dB

MW TUNER SECTION

GENERAL

Frequency Range .......... . . . . . . . . ..............522 kHz - 1620 kHz

Operating Voltage .........................14.4V (11 - 16V allowable)

Usable Sensitivity (S/N 20 dB) ...........35 dB

Current Consumption ................ .. ..6. OA

Size (W X H X D) . . . . . . . . . . . . . . . . . . . . ......

178 X50 X158mm

CASSETTE DECK SECTION

Wow & Flutter (D IN) .............. .. .. . . . . . . . ..0.l5%

Fast Winding (C-60) . ... . . . . . . . . . . . . . . . . . . . . ...90 sec

Frequency Response (120ws) .. . . . . ........5O

Hz - 14 Id+z

Cross Talk (1000 Hz) ...... .. . . . . . . . . . . . . . . . ...45 dB

Specification are subject to change without notice.

REFERENCE NO. SM750253

ALIGNMENT PROCEDURES

FM ALIGNMENT

●

Power Supply

Dc 14.4V

●

Sianal frenerator output :
M;dula;ion frequency :

400 HZ(MW) :

1

kHz (FM)

Modulation percentage

30%

22.5kHz (FM)

.

Reference output

500m W

.

Signal Generator output level is in EMF.

.

Signal application :
Antenna receptacle through the dummy antenna

.

Output meter connection :Across apeakeror dummy load (40hms)

.

Location of the components for alignment are ahown in main part
identification illustration.

MW RF ALIGNMENT

T

Stap Si nal

1 MW

T

2

~

Through

3

Dummy

ANT

(Fig.1)

4

‘requency Dial Set

Teat Equipment

Adjustment

522kHz Connect a DC

Adjust T8 for

voltmeter to TP1

voltage to be

& common GND

1.2V

603kHz 603kHz

Connect VTVM to

Tune T1 ,T3 RF

output terminal

coil for
maximum
output

999kHz 999kHz

Connact VTVM to

Tune T5, IF coil

output terminal

for maximum

output

999kHz 999kHz TP5 through 10K

Adjust SVR2

30dBK

resistor to 5V.

between 2.5V to

Connect a voltaga

4.5V
meter to TP2 and
ground

Rsg : Intarnal reaiatanca of a signal generator

1-

—— ——

I

Rsg

-’?

RI 15pF

STANDARD ‘

I

SIGNAL

o

I*

6opF -

T

R1=80–Rsg

GENERATORI

I
1-

!0

————

Fig. 1 Dummy Antenna for MW Alignment

Rsg : Internal rasiatance of a signal generator (50fl)

➤✎

Ah&

Vvv

Vvv

o

I

Rsg

Y

250hm

STANDARD I

I

SIGNAL

1?

IN

GENERATOR

I

LL–4

o

;tep Signal Frequency

Dial Teat Equipmant Adjustment

-

Input of signal

Setting Connection

Generator of Radio

1

106.OMHZ Connect DC Adjust L705 to
voltmeter to 7.6V
TP1 & GND

2

90.00MHZ 90.00 MHZ Connect VTVM Adjust T701 for
to speaker

maximum

output

output (1.F.)

3

Through

90.00 MHZ 90.00 MHZ

Adjust L701 .703

Dummy

& 704 for

ANT

maximum output

—

f

4

R

(Fig. 2)

5

98.00 MHz

60dBp

6 98.00MHz

21dB~

:paat the s

96.00 MHz

98.00 MHz

p 2 until maximum output
Connect a DC

Adjust T6 to

Voltmeter

OV * 20mV
between TP3
and TP4

TP5 through Adjust SVR1 to
10K raaiator to HIGH !5V)
5V.Connect a
voltage meter
to TP2 and
ground

Nota :
Open the L703 first, adjust T701, then adjust L701, L703 and L704.

ALIGNMENT OF TAPE SPEED

1.

Insart 3kHz (MTT-1 11) standard taat tape and set the unit at play mods.

2. Connect the Wow and Flutter Metar to apaaker output.

3. Turn the spaad adjustment screw to get 3000 t 30 Hz.

ALIGNMENT OF HEAD AZIMUTH

1.

Insert a 10kHz (MTT255J) standard teat and set the unit in play mode.

2. Tune the azimuth adjusting screw until you obtain maximum reading for
both channel on the VTVM.

SPEED ADJUSTMENT SCREW

CASSEITE

MECHANISM

~

@

+

1

AZIMUTH ADUSTMENT SCREW

—

Fig. 2 Dummy Antenna for FM Alignment

–l–

IDENTIFICATION ILLUSTRATION

BLOCK

ANT

t

/ 1 r I

2

~

SVR1

SVR2

L701~

‘a

I IC1 lT&2

w

u

T3

❑

T1

❑

H

au-l

Zz

ma

TE

❑

- ‘~m

J

5

DIAGRAM

IC701

~

lC1

,D7

~ FMIF MPX SNC~

PwP’-

) I

w

MW RF

Q1

_L_L

D5-1 05-2

3

L—

3

R—

I

I

C?!C

L-..-!&

J-J_

LPF

Q50L502

D101

1

m

2!rLl-

D201

d

— TONE CONTROL—

POWER

- INPUT MUTING

—

AMP

IC

11

LCD

I

Y

DISPLAY

%F-1

l--i

FRONT L

REAR L

FRONT R

POWER ANT

FUSE

~~

6,0A ACC

D601_ CONTROLLER

,

LCD DRIVER

1C501

D602

R601

u

Q601

BACK UP

L&E

-2-

I

PARTS LIST

Ref. No.

PART No.

DESCRIPTION

\ Q’ty

PACKING MATERIAL

641 0065226

INNER CARTON

1

641 0065233

INSTRUCTION MANUAL

1

641 0000791

POLY COVER, 275 X 340

1

6325355320

POLY COVER, 85 X 240

ACCESSORY

~

641 001 8109 BRACKET-M,’MOUNTING STRAP

4120160903 SPECIAL SCREW

1

4120375307

SPECIAL SCREW

1

I

2
3
$
5
5
7
3
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26
27
28
29
30
31
32
33

34
35
36
38
57

58
25
37
39
40
41
42

43
44
45
46
47
48
49

50
51
52
53
54

L

55
56
59

CABINET & CHASSIS

641 0065011

LID, CASSETTE

6410065028

PANEL, FRONT, MAIN

541 0063035

BUTTON, EJECT

641 0021642

ASSY, CASE, DRAWER
6410038466 BRACKET-E, MECHA (F)
641 0065042

ILLUMINATOR, KNOB

641 0065059

KNOB, ROTARY
641 0038473 BRACKET-E, MECHA (R)
6410065066

SLIDE, RELEASER
641 0065073

KNOB, ROTARY, VOLUME
641 0065080

BRACKET-E, IC
641 0065097

SPRING, COMP, RELEASER
641 0065103

KNOB, FADER
641 0065110

BRACKET-E, VR
641 0065127

SPRING, TORS
641 0045310

CHASSIS, TOP
641 0054695

SHIELO CASE (TUNER)
641 0065134

CHASSIS, FRAME
641 0065141 PLATE, GROUNDING
641 O06515B

BRACKET-E
641 0065165

HOLDER, LCD
641 0065172

HEAT SINK

6410065189

SHEET, LCD
641 0018093 LEVER, DRAWER
411 001 8504

SCR BIN 3 X 4
411 027 1305

SCR S-TPG BIN 2.6 X4
411 0285609

SCR S-TPG PAN 2.6 X 4
411 001 1901 SCR S-TPG BIN 3 X 6

641 0008230

CORD, PRESSURE WELDING

641 O02287B

CORD, PRESSURE WELDING

411 0271503 SCR S-TPG BIN 2.6 X 5
411 0284909 SCR S-TPG PAN 2.6 X 10
411 0259204 SCR S-TPG PAN 2 X 6
6410065196

LCD
4120448704 SPECIAL SCREW
641 001 B086

SPRING, TORS
641 0065240

LABEL, CAUTION

A SSY, DETACH PANEL

641 0064793

ASSY, DETACH PANEL

641 0065219

SHEET, DETACH

641006520

2 SHEET, ILLUMINATOR

641 006484

7 SPRING, COMP. HOOK

641006485

4 PANEL, FRONT, DETACH

641 O064B6

1 PANEL, REAR, DETACH

641 006487

8 BUTTON PRESETBNO

641 006486

5 BUTTON PRESETATP

641 006489

2 BUTTON PRESET 1
641006490 B BUTTON PRESET2
641 006491 5 BUTTON PRESET3
641006492

2 BUTTON PRESET4
641006493 9 BUTTON PRESET5
641 006494 6 BUTTON PRESET6
641 006495

3 BUTTON PRESET UP

641006496

0 BUTTON PRESET DOWN
641006487 7 BUTTON RELEASE

641006498

4 HOOK

641006499

1 ILLUMINATOR, PRESET
641006500 4 SPRING, COMP. BUTTON
411 025B70 2 SCRS-TPGPAN2X1O
641006476

2 ASSY, PCB-W, SWITCH

1
1

1

1
1

1

2

1
1
1
1
1
1
1
1
1
1

1
1
1
1
1
1
1
2
2
3
3

1

1
4
2
3

1

1

1

1

1

1
1
1
1

1

1
1
1
1
1
1

1
1
1
1
1
1
1
1

5
1

Ref. No.

PART No.

DESCRIPTION

I Q’ty

ASSY, PCB-W, MAIN

CB1

6410064755 ASSY, PCB-W, MAIN

1

641 0059409 SOCKET, ANTENNA

1

PF1

641 0064809

FILTER, LC, LP

1

:601

641 0054619

FILTER, LC, EMI

1

:Pl 01

6322539983

PLUG, 3P

1

:Pl 02

641 001 0585 PLUG, 4P

1

;P601

640001 2015 CONNECTOR-P, 12P

1

:s501

641 0054626 CONNECTOR-S

1

I1,2,3,4,6,7,101, 4070124406 DIODE 1SS133

31

02,201,501,502,
111,512,513,514,
115,516,517,51B,
119,520,521,522,
123,524,541,542,
}43,544,605,606
)1,2,3,4,6,7,101, 407 1124603

DIODE 1SS119-41

}OR 31

02,201,501,502,
ill ,512,513,514,
i15,516,517,51B,
i19,520,521 ,522,
i23,524,541 ,542,
i43,544,605,606
)5

407 1467403 VARACTOR DI SVC354S-TR

1

)503

4070996003

ZENER DIODE MTZJ9.1 B

1

)532

4080353209 LED SLP-4B1 C-51 -ABY-T1

1

)601 ,602,603

4071588306 DIODE 1N4002S

)601 ,602,603

4071433806 DIODE RL1 N4002

)OR :

)604

4070995501 ZENER DIODE MTZJ6.2C

1

)701 ,702,703,704

4072004506

VARACTORDI SVC220-TB

4

‘11 641 0007035

RESONATOR, CERAM

1

’12

641 0022694 Ceramic FlLTER,450kHz )OR

1

’12

6410007028

CERAMIC FILTER, AM

1

’13

641 0054602

FILTER, CERAM, 10.7 OOMHZ

‘14,701

641 0054596 FILTER, CERAM, 10.7 OOMHZ

;

‘OR D532

641 0050925

HOLDER, LED

1

cl

4092299304

IC LA1875M

1

Clol

409016790 2 ICLA3161

1

C301

409195480 8 ICTA821OAH

1

C501

409271 650 4 ICLC7232-8424

1

C701

409001 600 2 ICAN7254

1

-1

641 002541 1 INDUCTOR, 100UHK

1

.601

641000410 2 INDUCTOR, FERRITE,2MH

1

-701,704

841000753 0 COIL, AIR, VHF

2

.702 632 52B 507

8 COIL, AIR

1

.703

641000754

7 COIL, AIR

1

.705

641000756 1 COIL, AIR

1

al

406015700 1 TRFCIBG-PM-TL

01

405143430 2 TRFC18G-TL

}OR ;

D301,401

405035650 8 TR2SD1306N-E-TR

2

Q503,504,505

405001070 5 TRRN1404

Q503,504,505

405029350 4 TRDTC144EK-T87

}OR :

Q506,507,508,51

5 405035940

8 TRRN2407

D506,507,508,51 5 405029300

9 TRDTA114YK-T97

)OR :

Q509

405013130 1 TR2SC2120Y-T

1

Q51O

405105460 9 TRRN2405

1

0701

405096450 3 TR3SK226-TE85R

1

Q702

405015970 1 TR2SC2814F4-TB

1

Q8

405029500 3 TR2SK105-H

1

09,501,502,516,

405015420 1 TR2SC2712-GR

5
801
(29,501 ,502,516,

405015670 4 TR2S2812-L6-TA

)OR 5
601
C19,501 ,502,516,

405134000 9 TR2SC3928-R

5
601
SVR1

841004335 4 SVR,50K OHM

1

SVR2

641004521 1 SVR,20K OHM

1

T1 ,T3

641002655 5 TRANS, RF, MW ANT

2

T5 641002857

9 TRANS, IF, AM

1

T6

641 002555 8 TRANS, IF, FM

1

T701

641002790 3 TRANS, IF, FM

1

T8

641002556 5 OSCCOIL, MW

1

VR301

641002273 1 VR, ROTARY, 100KB

1

VR302,402

841 002272 4 VR, ROTARY,50KAX2

2

X501

641 00505

81 RESONATOR, XTAL

1

—

‘d

-3-

m

L

PARTS LIST

Ref. No.

PART No.

DESCRIPTION I Q’ty

Ref. No.

PART No.

DESCRIPTION ] Q’ty

ASSY, PCB-W,

LCD

ASSY, PCB-W, SWITCH

PCB2

641 0064779

ASSY, PC13-W, LCD

1 FC302 TO FS302 641 0064830

PC, JOINER, 3P-70MM

1

D607,606

4060353209

LED SLP-481 C-51 -ABY-T1

2 S601 ,VR303,

641 0064616

VR, ROTARY

1

ASSY, PCB-W,VR

304,305

PCB3

641 0064766

ASSY, PCB-W, VR

1

FC301 TOFS301

6410064623

PC, JOINER, 1OP-6OMM

1

NOTES: 1.

Part orders must contain Model Number, Part Number and Description.

2. Order quantity of screws and resistors must be multiple of 10 PCS.

3.

Regular type resistor andcapecitor are omitted. Check the schematic
diagram for these values.

EXPLODED VIEW

ELECTRICALCONNECTIONS

(m .!2 - —“.-.
!- .L./.m,+.~-~

,-, ­O-m .!, .-

/’/’= .-,. -” ------- t.-”.-. ------

L

-4-

IC AND TRANSISTOR VOLTAGE CHART

Ic

PIN , ~ ~ ~ ~ ~ ~

* g ,~ ,, ,2 ,.j ,Q ,5 16

17 18 19

FM 5.3 0.3

0 5.2

0.1 8.3 1.2

4.2 0 4.2

4.2

0 4.2 8.3 0.1 8.2 4.4

2.4 4.2

MW 5.3 0.2 0 0 1.8 8.2 1.1

3.7 0 3.7

3.7 0 3.7

8.2 0 8.2 3.7

2.5 0.7

Icl

20 21 22 23 24 25 26

27 28 29 30 31 32 33 34 35

36

FM 4.1 4.7 3.2 3.3 3.3 3.3 0

0 3.3 3.2 3.6

3.4 0.7 0.1

0 4.1

0

MW 3.7 4.7 2.8 2.9 3.3 3.3 0

0 3.3 3.3 3.3

3.0 0.6 3.7 2.2 3.5

2.9

Ic

2 3

4 5

6

7

8 9

10 11 12 13 14 15

16 17

Iclol 1.3 0.8 2.3

13.9 0 2.3 0.8

1.3

IC301 13.9 5.1 5.2 4.9 0 5.1 5.2

5.2

13.9 13.9 6.2 6.2 0

0 6.2

6.2

13.9

IC701 8.0

3.9 8.0 0.7 0 2.2 1.6

6.6 5.2

PIN

TR Qg

Q30,

Q401

Q501

Q502

Q5(33

Q504

Q5C15

Q506

Q507

Q508

Q509

Q51O

Q515

Q516

Q601

Q702

B

ON 3.8 0.6 0.6 1.2 0.7 4.8

5.4 4.9 0

0 0 8.9 0.9 0 0.6

6.2 0.7

OFF 0.7 0

0 — — o

0 0 2.3 0.1 0.1 — 8.2 5.0 0

— —

c

ON 8.2 0

0

● ● o

0 0 0 0 0.1

13.5 8.1 4.9 0 13.2 6.9

OFF 8.2 0

0 — — 0.1

0.1 2.8 0 0 0 — o 0 5.1

— —

E ON 3.2 0 0 0.7 0 0

0 0 0 0 0 8.2 8.2 4.9 0

5.6 0

OFF 0.2 0 0 — — o

0 0 0.6

0 0 — 8.3 5.7 0

— —

B

PIN ‘R Q1

Q8

D 0.2

0

G o

0

s

0.1

1.5

B 0.8

● : FM 1.2-7.8

c 8.2

:MW 1.2-7.2

IC BLOCK DIAGRAM

LA 3161

TA 8210AH

PRE–VCC

POWER

POWER

STAND–BY SW

AN7254

Vcc

I

1

NF

NF

GND

LA 1875M

-5­,.

,:,..,.

..

,..

.— -

,..—-

I

.- ,.

(Ill

[

i

1

1

—..

h

* -

WI?

II

II

.

E!!i

8

1!

t

E

&~;

9

$

;

H

I--L

,

II

II

1

m

1

r

i-

i-. ?_—_e__

.,,

,.,

“,.

....

......

!.’

i,,

,,,

..”.

.,,.

,,

t

t

I

Tl~mT-lmmulwTo

IJmm PIJJJJmmpoclz

oo>>oo~>~=zo

zzJJmzz JJJJxmm

‘+mr++mrcmm

.,,.

,,

,“

.,.

,,

I

PARTS LIST (CASSETTE MECHANISM)

EXPLODED VIEW

L

Ref. No.

c}

I

4

5
6
7
8
9

10
11

12
13
14
15
17
18
21
22
23
26
27

28
29
32
33

b 34

35
38
39
40
41
42
43

44
45
47
49
48
50
51

52
53
54

NOTES: 1.

2.

L

PART No.

DESCRIPTION

C1’ty

SETTE MECHANISM (641 005 4909)

541 0054909

ASSY, MECHA TN-301 NX-258

541 002 5169

CHASSIS ASSY

341 001 9045

HEAD PANEL SP

641 001 9021

HEAD PANEL

641001 9014

AZIMUTH SPRING

6410054916

HD.P-7442BS-3453

641001 9281

TAMS SCREW 2X9

641001 9296

AZIMUTH SC M2X1O

641001 9038

HEAD BASE

641 0006076

CAMERA SCR 2X5.5

6410006793

WAS. 2.1 X5X0.2

641 001 9007

ANTI-VIB MAT

641 001 8963

PINCH ROLLER ASSY

641 001 9069

PINCH ROLLER SP

641 001 8970

REEL GEAR ASSY
641001 9274 HW(10.3X14.2X.4)
641001 8967

FLYWHEEL ASSY
6410025190

P.WAS 2.1 X3.5X.3

641001 9328 H.W. (Cl .5 X3.2X.5)
641 0041794

MOTOR PULLEY

641 001 9076

MAIN BELT

6410054923

MOTOR, EG530AD2FS

6325472966

M2.6X3 PAN MIC SC

641001 9120

CASS CASE

641 0024933

KICK PLATE

641001 9106

PACK HOLDER SP

6322277694

KICK PLATE SP

641001 8994

GEAR PLATE ASSY

641 001 9137

CAM GEAR
641001 9144 SENSOR
641 001 9175

G. LOCK LEVER
641001 9151

G. LOCK LEV SP
641001 9168

GEAR PLATE SP
641001 9267

P.W (Cl .2 X3.8X.3)
641 001 925

0 LEAFSW

641001 920

5 FUNC. LEVERSP

641 001 921

2 LIFT UP LEVER

641 001 922

9 PUSH PLATE

641001 924

3 REVERSE SPRING

641 001 923

6 FUNCTION LEVER

641 001 918

2 FF LOCK LEVER

641 001 919

9 LOCK LEVERSP

641 001 930

4 H.WASH 2.1X5X0.3

Part orders must contain

Model Number,
Part Number and Description.
Ordar quantity of screws and resistors must
be multiple ofl O Pcs.

—

1
1

1
1
1

1
1
1
1
1
1
1
1
1

1
1
1
1
1
1
1
1
2
1
1

1
1
1
1
1
1
1

1
1
1
1
1
1
1
1
1

;

—

??

35

33

-1o-

I

CIRCUIT OPERATION DESCRIPTION

1.BASIC OPERATION OF PLL FREQUENCY SYNTHESIZER

L

(--– ———––––———–—––____–__ —––—________________,

I

4.5 MHZ

Devider

Voltage central oscillator

,

L

w

T

Osc 1/d ‘r Vco

m

fout

[ Low pass filter
L______________________

1

Programmable divider

Prescaler

,

L

I
I

P.D.

1/N

lM

or l/M+l

J

N : Program control

(FM only)

I

P!Y.!l

~---------------—-;

I

I

L-_-_---------------------------------_-------_-J

The illustration above is a biock diagram which is afunda­mental PLL frequency synthesizer.
In order to obtain reference frequency fr, the frequency of

4.5 MHZ generated from a crystal oscillator (OSC) is passed

into a divider circuit of 1/d.

This fr is compared with fr’, and runs through phase detector

(PD)

and low pass filter (LPF) to be inverted to direct-current

signal, which is then applied as varicap voltage of voltage
control oscillator (VCO), thereby controlling the oscillation
frequency.

This oscillation frequency fout is divided down to 1/N by

programmable divider (PD), so that one closed loop is fixed in
the relation of

fout =frxN

therefore, the operation of PLL is stabilized.

In case of automatic channel selection, the dividing ratio N is
altered by the PD by a command from controller, and fout is
changed accordingly.

Programmable dividar

Since the oscillation frequency of VCO is very high as com-

pared with fr, it is divided down to 1/N (in the case of MW)

to decrease the difference from fr in this circuit.

Phasa datactor

This is a circuit to

detect the difference in frequency and phase
between reference frequency fr and comparison frequency fr’
in terms of pulses.

Low

pass filter

This circuit is intended to vary and fix the output

voltage in

order to deliver a varicap voltage necessary for desired VCO

frequency, on the basis of the output of the phase detector.

Prescaler

The local oscillation frequency in FM is higher than the
operating speed of the programmable divider of PLL, thereby
opposing to accurate operation. To avoid this, the local
oscillation frequency is preliminarily divided down in this
circuit to a proper frequency permitting reliable operation of
the programmable divider.
Pulse swallow count system is employed. A couple of pro­grammable divider (swallow counter and programmable
counter) can be selected.

-11

Psc

~----- ---------- —--—

1

1

f asc

Prescaler

)

.’.-

1
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l---------------------i

Programmable divider (N I <N2)

f OSC={(M+l)NI +M(N2-NI)} fr’

=(MN2+NI) fr’

Prescaler

Swallow counter

Programmable counter

I

M+l

t

M

I

N2-N1

The prescaler at first starts the frequency division with the
ratio M +1. Then the swallow counter and the programmable
counter starts counting simultaneously. When N 1 inputs are
applied, the swallow counter stops counting. Then the fre­quency division ratio of the prescaler is switched to M.
Programmable counter continues to count and stops when
the input reaches N2. The frequency division ratio of the
prescaler switches back to M + 1 and swallow counter and the —
programmable counter start to count again.
FM reception employs the pulse swallow count system. MW
raception does not employ the pulse swallow count system
but employs the direct frequency division system and so only
programmable counter is operated.

2. GENERAL DESCRIPTION OF LOGIC IC (lC501 )

a) IC801 LC7232-8424
This IC includes PLL and controller is a C-MOS LSI for digital
tuning of FM/MW PLL frequency synthesizer system and

controls such functions as FM/MW automatic channel selec­tions, preset memory and frequency digital display driver. It is

packed in a 80-pin flat package.

3. AUTOSTOP

If counter start, when high level signal is applied to SD terminal

(Q504 base). Then IF frequency became 10.7MHz +30kHz at

FM or 450kHz*3kHz at MW. When SD and IF is agreed radio

auto search tuning stops.

—

I

CIRCUIT OPERATING DESCRIPTION

DESCRIPTION (LC7232-8424)

L

PIN

SYMBOL

FUNCTIONAL EXPLANATION

NO

IN

OUT

1 XIN

lnDut side of inverter for OSC

3

AREA3

Key return signal irmut

4 AREA2

Key return sicrnal irwut

5

AREAl

Key return signal irmut

6

DIS

Key return signal input

AMSS

7

BEEP BEEP Sifrnal outwt

10

VF

I

w

I 1

I I I 1 I

0

I

11

DIS

Key return signal input

DOLBY

12 DIS MTL

Kev return signal input

13 SDK

—

SDK siqnal output

14

MUTE MUTE sifanal outrwt

&

MODE 1

TAPE i

FM AM

AM:hlw

I

n 1

I 1

LW

L

16

MODE 2

I I 0

1

17

STBY

AMP STBY

OUtDUt

18

TA MUTE

TAPE MUTE

OUtDUt

19

LOUD. LOUDNESS sicmal outDut

20

LO LO

sicrnal outDut

21

DOLBY

DOLBY sicrnal outDut

22

AMSS AMSS siqnal outDut

23

MOIMTL

MOIMTL sicrnal outDut

24

RA MUTE

RA MUTE sicrnal outrmt

25

KS5 Kev matrix return Simal outDut 5

26

KS4 Kav matrix return sifmal outrxrt 4

27

KS3 Key matrix return Sianal outDut 3

28

KS2 Kev matrix return simal outrIut 2

29

KS1

Kev matrix return siclnal outDut 1

30

KSO Kev matrix return sianal outmt O

31

VDD

VDD 5V

32 K3

Key matrix return signal outDut 3

33

K2

Kev matrix return signal output 2

L

:; ::

Kev matrix return sifrnal outrwt 1
Kev matrix return siqnal outrwt O

36

S28

LCD19

OUtDUt fOr LCD

37

S27 LCD I 8 outDut

for LCD

38

S26 LCD I 7

OUtDUt fOr LCD

39

S25 LCD 16

outwt for LCD

40

S24 LCDI 5 outrwt for LCD

41

S23

LCD 14

OUtDUt fOr LCD

42

S22

LCD13 outDut for LCD

43

S21 LCD 12 OUtDUt fOr LCD

44

S20 LCD 11 OUtDUt fOr LCD

45

S19 LCD 1() OUtDUt fOr LCD

46

S18 LCD9 OUtDUt fOr LCD

47 S17

.LCD20 OUtDUt fOr LCD

48

S16 NC

49

S15 NC

50

S14

LCD24 outDut for LCD

51

S13

LCD21 output for LCD

52

S12

NC

L

53

S1l LCD22 OUtDUt fOr LCD

PIN

SYMBOL

FUNCTIONAL EXPLANATION

NO

IN

OUT

54

Slo

LCD23

outDut for LCD

55

S9 LCD25 outDut for LCD

56

S8 NC

57

S7

LCD8 or 26 outDut for LCD

58

S6

LCD7 OUtDUt fOr LCD

59

S5 NC

60

S4

LCD6 OUtDUt fOr LCD

61

S3 LCD5 OUtDUt fOr LCD

62

S2

LCD4 OUtDUt fOr LCD

63

S1

LCD1 outDut for LCD

64

COM2

COMMON signal 2 output for LCD

65

COMI

COMMON Signal 1 OUtDUt fOr LCD

66

INT

VDD 5V

67

CE

—

ChipEnable ( + 5V)

68

RES

RESET

69

ADI

Signal meter level inDut

70

FM IF

FM IF inDut

71 AM IF

—

AM IF input

72

SNS

VDD 5V

73

VDD

VDD 5V

74

FM in

FM OSC inDut

75 AM in

AM OSC inDut

76 GND

GND

77

EO1

Phase detector outrwt 1

78

E02 Phase detector outrwt 2

79

GND

80

Xout Outm.rt side of inverter for OSC

LCD SEGMENT & COMMON LINE

Pin COM1

COM2 Pin COM1

COM2

1 COM1

14 3d

3C

2 COM2 15 3a

dot

3

5f

5b 16 4f

4b

4 5e

5g

17 4e

4g

5 5d

5C 18 4d

4C

6 5a

CH 19 4a

4

7 LW

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Printed in Malaysia

SAj#fYO

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SANYO Electric Co., Ltd.

Osaka, Japan.