JVC KS-FX732R Service Manual

SERVICE MANUAL

CASSETTE RECEIVER

KS-FX732R

KS-FX732R

Contents

TP/PTY

CD CHANGER CONTROL

SEL

DISP

MO

7

8

10

9

11 12

RPT

RND

KS-FX732R

MODE

TAP

E

DAB

FM/AM

¢

SSM

4

CD­CH

SCM

Area Suffix

E -------- Continental Europe
EX ------------ Central Europe

Safety precaution
Disassembly method
Adjustment method
Discription of major ICs

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

1-2
1-3
1-18
1-22

No.49695

Feb. 2002

KS-FX732R

Safety precaution

!

Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.

1-2

Disassembly method

<Main body>

Removing the front panel assembly

(See Fig.1)

1.

Press the eject button in the lower right part of the
front panel. Remove the front panel assembly from
the body.

Removing the front chassis assembly

(See Fig.2 and 3)

KS-FX732R

Front panel assembly

Eject button

Fig.1

Tab a

Prior to performing the following procedure, remove
the front panel assembly.

1.

Release the four joint tabs a on both sides of the
front chassis assembly and remove the front chassis
assembly toward the front.

Tab a

Front chassis assembly

Heat sink

Fig.2

Tab a

Tab a

Front chassis
assembly

Fig.3

1-3

KS-FX732R

Removing the heat sink (See Fig.4)

1.

Remove the three screws A on the left side of the
body.

Removing the bottom cover

(See Fig.5 and 6)

Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly
and the heat sink.

1.

Turn over the body and unjoint the five joints b with
the bottom cover and the body using a screwdriver.

Joint b

A

Joints b

Heat sink

Fig.4

Rear panel

Fig.5

A

Bottom cover

Joints b

Joints b

Bottom cover

Joints b

Joint b

Rear panel

Fig.6

1-4

KS-FX732R

Removing the main board

(See Fig.7 and 8)

Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly,
the heat sink and the bottom cover.

1.

Remove the screw B, the three screws C and the
two screws D attaching the rear bracket on the back
of the body. Remove the rear panel.

2.

Remove the two screws E attaching the main board
on the bottom of the body. Disconnect connector
CP401 on the main board in the direction of the
arrow.

D

E

Rear panel

Fig.7

C

Main board

B

C

D

E

Removing the cassette mechanism section

(See Fig.9)

Prior to performing the following procedure, remove
the front panel assembly, the front chassis assembly,
the heat sink, the bottom cover and the main board.

1.

Remove the four screws F attaching the cassette
mechanism section on the back of the top chassis.

Fig.8

Cassette mechanism section

F

F

Fig.9

CP401

F

F

Top chassis

1-5

KS-FX732R

Removing the control switch board

(See Fig.10 to 12)

Prior to performing the following procedure, remove
the front panel assembly.

1.

Remove the four screws G attaching the rear cover
on the back of the front panel assembly.

2.

Unjoint the eleven joints c with the front panel and
the rear cover.

3.

Remove the control switch board on the back of the
front panel.

G

G

Front panel

Rear cover

Joints c

G

G

Fig.10

Joints c

Joints c

Rear cover

Front panel

Joints c

Fig.11

Control switch board

Fig.12

1-6

KS-FX732R

REFERENCE:

Prior to performing the following
procedures, turn the mode gear on the
bottom of the body until the respective part
comes to the EJECT position (Refer to
Fig.1).

Removing the reinforce bracket

(See Fig.1 and 2)

1.

Remove the screw A attaching the reinforce bracket
on the bottom of the body.

2.

To release joint a, turn and detach the reinforce
bracket from the side bracket assembly as shown in
Fig.2

Removing the cassette guide (See Fig.3)

1.

Turn the mode gear to set to RVS play or
subsequent mode.

2.

Remove the cassette guide from the main chassis
while releasing each two joint tabs b in the direction
of the arrow.

Mode gear

Reinforce bracket

A

Fig.1

Joint a

Reinforce bracket

Removing the head board (See Fig.4)

1.

Remove the screw B on the upper side. Unsolder
the wires on the under side of the head board, if
necessary.

REFERENCE:

Cassette guide

When reassembling, twist the wires by
turning the head board twice remarked c
and pass through the notch d as shown
in Fig.4.

Head board

B

Fig.2

Head board

Soldering

notch d

Tab b

Tab b

c

Fig.4Fig.3

1-7

KS-FX732R

Removing the load arm (See Fig.5)

1.

Remove the E-washer attaching the load arm.

2.

Move the load arm in the direction of the arrow and
release the joint e on the cassette catch.

Removing the cassette hanger assembly /
cassette holder (See Fig.6 to 9)

1.

Check the mode is set to EJECT. Push down the
front part of the cassette holder and move in the
direction of the arrow to release the joint f.

2.

Move the rear part of the cassette hanger assembly
in the direction of the arrow to release it from the two
joint bosses g.

Load arm

E-washer

Cassette holder assembly

Side bracket

Joints f

Joint e

Fig.5

Boss g

Cassette hanger
assembly

Boss g

3.

Release the holder stabilizer spring from the hooks h
and i, then pull out from the cassette hanger
assembly.

4.

Bring up the rear side of the cassette hanger
assembly to release the joint j and k.

5.

Pull out the cassette catch from the cassette hanger
assembly.

Cassette holder
assembly

Cassette holder assembly

Fig.6

Cassette hanger assembly

Cassette stabilizer spring

Hook i

Hook h

Fig.7

Cassette hanger assembly

Cassette catch

Cassette holder assembly

1-8

Hook j

Fig.8

Cassette hanger assembly

Hook k

Fig.9

KS-FX732R

Removing the side bracket assembly

(See Fig.10 to 12)

1.

Remove the screw C attaching the side bracket
assembly.

2.

Detach the front side of the side bracket assembly
upward and pull out forward to release the joint l and
m in the rear.

CAUTION:

CAUTION:

When reassembling, make sure that the
boss n of the main chassis is set in the
notch of the load rack under the side
bracket assembly. Do not reattach the
load rack on the boss n.

After reattaching the side bracket
assembly, confirm operation.

Side bracket assembly

Joint l

Joint m

C

Side bracket assembly

Fig.10

Side bracket assembly

Joint l

Joint m

Load rack

Load rack

Boss n

Boss n

Fig.11

Fig.12

1-9

KS-FX732R

Removing the pinch arm (F) assembly

(See Fig.13 and 14)

1.

Remove the polywasher and pull out the pinch arm
(F) assembly.

2.

Remove the compulsion spring.

Removing the pinch arm (R) assembly

(See Fig.13 and 15)

1.

Remove the polywasher and pull out the pinch arm
(R) assembly.

Removing the slide chassis assembly

(See Fig.16 and 17)

Polywasher

Pinch arm
(R) assembly

Polywasher

Compulsion spring

Fig.13

Pinch arm
(F) assembly

Pinch arm (F) assembly

Polywasher

REFERENCE:

It is not necessary to remove the head
and the tape guide.

1.

Move the slide chassis assembly in the direction of
the arrow to release the two joints o and remove
from the main chassis.

2.

Remove the rack link.

CAUTION:

When reassembling, first reattach the rack
link, and next fit the boss p and hook q of
the slide chassis assembly to the hole of the
main chassis, and engage the two joints o.

Rack link

Fig.14

Boss p

Pinch arm
(R) assembly

Fig.15

Head

Hook q

Polywasher

Tape guide

Joint o

Slide chassis assembly

1-10

Fig.16

Joint o

Fig.17

KS-FX732R

Removing the head / tape guide

(See Fig.18 and 19)

REFERENCE:

1.

Remove the band attaching the wire to the head.

2.

Remove the two screws D, the head and the head
support spring.

3.

Remove the pinch arm spring from the tape guide.

4.

Remove the tape guide and the pinch spring arm.

CAUTION:

CAUTION:

It is not necessary to remove the slide
chassis assembly.

When reattaching the pinch arm spring, set
both end of it to the pinch spring arm (
remarked r).

When reattaching the head, set the wires
into the groove of the tape guide (Fig.18).

D

Slide chassis assembly

Head

Tape guide

Fig.18

D

Pinch arm spring

Head

Head support spring

Tape guide

Removing the flywheel assembly (F) & (R)

(See Fig.20 and 21)

REFERENCE:

1.

Remove the belt at the bottom.

2.

Remove the two polywashers on the upper side.

3.

Pull out each flywheel assembly downward.

Flywheel assembly (F)

It is not necessary to remove the slide
chassis assembly.

Belt

r

Pinch spring arm

r

Slid chassis assembly

Fig.19

Polywasher

Polywasher

Flywheel assembly (R)

Fig.20

Flywheel assembly (F)

Fig.21

Flywheel assembly (R)

1-11

KS-FX732R

Disassembling the flywheel assembly (F)

(See Fig.22 and 23)

1.

Push and turn counterclockwise the spring holder (F)
to release the three joints s on the bottom of the
flywheel.

2.

The spring holder (F), the TU spring and the friction
gear play come off.

3.

Remove the polywasher and felt.

Flywheel assembly (F)

Joints s

Flywheel assembly (R)

Joints t

Disassembling the flywheel assembly (R)

(See Fig.22 and 24)

1.

Push and turn clockwise the spring holder (R) to
release the three joints t on the bottom of the
flywheel.

2.

The spring holder (R), the FF spring and the friction
gear FF come off.

3.

Remove the polywasher and the felt.

Removing the reel board

(See Fig.25 and 26)

1.

Remove the two screws E attaching the reel board.

2.

Move the reel board in the direction of the arrow to
release the joint u.

3.

Unsolder the wires if necessary.

CAUTION:

When reattaching, confirm operation of
the MODE switch and the ST-BY switch.

The mode position between EJECT and
ST-BY is optimum for reattaching.

Joint s

Fig.22

Polywasher

Polywasher

Spring holder (R)

Spring holder (F)

TU spring

Friction gear FF

Friction gear play

Felt

Flywheel assembly (F)

FF spring

Felt

Flywheel assembly (R)

Fig.23 Fig.24

Joint t

1-12

Connect the card wire extending from
the reel board to the FFC pad before
reattaching the reel board.

FFC pad

E

Reel board

E

Fig.25

Joint u

FFC pad

CT-1 switch

MODE switch

Soldering

ST-BY switch

Fig.26

KS-FX732R

Removing the gear base arm / gear base
link assembly (See Fig.27 to 29)

1.

Move the gear base arm in the direction of the arrow.

2.

Insert a slotted screwdriver to the gear base spring
under the gear base arm, and release the gear base
arm upward from the boss on the gear base
assembly.

3.

Remove the gear base arm from the main chassis
while releasing the two joints v.

4.

Move the gear base link assemby in the direction of
the arrow to release the two joints w.

REFERENCE:

When reattaching the gear base arm,
make sure that the boss on the gear
base assembly is inside the gear base
spring.

Removing the FFC pad

(See Fig.27 and 29)

Gear base
link assembly

Gear base spring

Joint w

Gear base arm

Joints v

Hook x

FFC pad

Hook x

Joint w

Fig.27

Gear base arm

Screwdriver

1.

Push each joint hook x of the FFC pad and remove
toward the bottom.

Gear base link assembly

Fig.28

Gear base arm

Fig.29

FFC pad

1-13

KS-FX732R

Removing the mode gear

(See Fig.30 and 33)

1.

Remove the polywasher on the bottom and pull out
the mode gear.

Removing the mode switch actuator

(See Fig.30, 31 and 33)

1.

Pull out the mode switch actuator at the bottom.

REFERENCE:

When reattaching the mode switch
actuator to the main chassis, make sure to
set on the shaft and insert y into the slot z.

Removing the direction link / direction
plate (See Fig.31 to 33)

1.

Remove the polywasher attaching the direction link.

2.

Bring up the direction link to release the three joints
a’, b’ and c’ at a time.

3.

Move the direction plate in the direction of the arrow
to release the two joints d’.

REFERENCE:

When reattaching the direction plate,
engage the two joints d’ and move in the
direction of the arrow (See Fig.32).

Mode switch actuator

Direction plate

Direction link

Fig.30

Direction plate

Joints d'

Joint c'

Direction link

Slot z

Joint b'

Polywasher

Fig.31

Direction plate Mode rack assembly

Joint k'

Mode gear

Polywasher

Mode rack assembly

Joint a'

Joint k'

Joint l'

REFERENCE:

When reattaching the direction link,
move the direction plate in the direction
of the arrow and engage the three joint

a’, b’ and c’ at a time (See Fig.33).

Removing the mode rack assembly

(See Fig.31 and 32)

1.

Move the mode rack assembly in the direction of the
arrow to release the two joints k’ and the joint l’.

REFERENCE:

When reattaching, set the two k’ on the
bottom of the mode rack assembly into the
slots of the main chassis and move in the
direction of the arrow (See Fig.32).

Joints d'

Fig.32

Direction link

Mode switch actuator

Polywasher

y

Mode gear

Direction plate

Mode rack assembly

Fig.33

1-14

KS-FX732R

Removing the gear base assembly / take
up gear / reflector gear (See Fig.34 to 36)

1.

Push in the pin e’ of the gear base assembly on the
upper side of the body and move the reflector gear
toward the bottom, then pull out.

2.

Remove the polywasher on the bottom and pull out
the take up gear.

3.

Move the gear base assembly in the direction of the
arrow to release it from the two slots f’ of the main
chassis.

REFERENCE:

The parts are damaged when removed.
Please replace with new ones.

Gear base assembly

Pin e'

Polywasher

Slot f'

Slot f'

Fig.34

Take up gear

Removing the reel driver / reel spindle

(See Fig.36)

1.

Draw out the reel driver from the shaft on the main
chassis and remove the reel driver spring and the
reel spindle respectively.

CAUTION:

The reel driver is damaged when
removed. Please replace with a new
one.

Reflector gear

Reel driver

Reel driver spring

Reel spindle

Main chassis

Fig.35

Reel driver

Reel driver spring

Reel spindle

Gear base assembly

Slots f’

Take up gear

Reflector gear

Polywasher

Fig.36

1-15

KS-FX732R

Removing the side bracket assembly

(See Fig.37 to 41)

1.

Remove the eject cam plate spring.

2.

Push the joint g‘ through the slot to remove the load
rack downward.

3.

Move the eject cam limiter in the direction of the
arrow to release it from the boss h’ of the side
bracket assembly and from the two joints i’.

4.

Move the eject cam plate in the direction of the arrow
to release the joint j’.

Joint g'

CAUTION:

Joint i'

When reassembling, confirm operation of
each part before reattaching the eject cam
plate spring.

Side bracket assembly

Boss h'

Eject cam limiter

Side bracket assembly

Joint i'

Joint g'

Eject cam plate spring

Joint i'

Load rack

Fig.37

Boss h'

Eject cam limiter

Eject cam plate

Fig.39

Joint i'

1-16

Fig.38

Side bracket assembly

Boss h'

Eject cam plate

Fig.40

Load rack

Joint j'

Side bracket assembly

Eject cam plate

Joint j'

Fig.41

KS-FX732R

Removing the main motor assembly /
sub motor assembly (See Fig.42 to 44)

1.

Remove the belt at the bottom.

2.

Remove the polywasher and pull out the mode gear.

3.

Pull out the reduction gear (B).

4.

Remove the polywasher and pull out the reduction
gear (A).

5.

Remove the two screws F attaching the main motor
assembly.

6.

Remove the two screws G attaching the sub motor
assembly.

7.

Unsolder the wires on the reel board if necessary.

CAUTION:

When reassembling, adjust the length of the
wires extending from the sub motor
asswmbly by attaching them to the side of
the sub motor assembly with the wires
extending from the main motor assembly
using a spacer.

Belt

Reduction gear (B)

Reduction gear (B)

G

Polywasher

Fig.42

F

G

Mode gear

Polywasher

Reduction gear (A)

F

Main motor
assembly

Reduction
gear (A)

Polywasher

Sub motor
assembly

Spacer

Main motor assembly

Sub motor assembly

Main motor assembly

Sub motor assembly

Fig.43

Spacer

Fig.44

1-17

KS-FX732R

Adjustment method

Test instruments reqired for adjustment

1. Digital osclloscope(100MHz)

2. Frequency Counter meter

3. Electric voltmeter

4. Wow & flutter meter

5. T est Tapes

MC-109C

VT724.......................

VT739............For playback frequency measurement

VT712....For wow flutter & tape speed measurement

VT703..................... For head azimuth measurement

6. T orque gauge ....................Cassette type for CTG-N

...................

for TAPA CURL confirmation
(without Padd type)

for DOLBY level measurement

(mechanism adjustment)

Standard volume position

Balance and Bass,Treble volume. Fader
:Center(Indication"0")
Loudness,Dolby NR,Sound,Cruise:Off
Volume position is about 2V at speaker output with
following conditions.Playback the test tape VT721.

FM: 87.5 MHz to 108.0 MHz
AM: (MW)522 kHz to 1

Measuring conditions(Amplifier section)

Power supply voltage.............. DC14.4V (11V to 16V allowance))

Load impedance ........... 4 (4 to 8 allowance)

Line out............................................................ 20k (250 nWb/m)

620 kHz

(LW) 144 kHz to 279 kHz

1-18

Arrangement of adjusting & test points

Cassette mechanism
(Surface)

Motor assembly

KS-FX732R

Tape speed adjust

Head section view

Azimuth screw A
(Forward)

Playback head

Azimuth screw B
(Reverse)

Azimuth screw B
(Reverse)

Azimuth screw A
(Forward)

Playback Head

1-19

KS-FX732R

Information for using a car audio service jig

1. We're advancing efforts to make our extension cords common for all car audio products.
Please use this type of extension cord as follows.

2. As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the
mechanism assembly after disassembly.

3. Extension cord : EXTKSRT002-18P ( 18 pin extension cord ) For connection between mechanism assembly
and main board assembly .
Check for mechanism driving section such as motor ,etc..

Disassembly method

1. Remove the bottom cover.

2. Remove the front panel assembly.

3. Remove the top cover .

4. Install the front panel.

5. Confirm that current is being carried by connecting
an extension cord jig.

Note
Available to connect to the CP701 connector when in­stalling the front panel.

Cassette mechanism

to Cassette mechanism

EXTKSRT002-18P

Extension cord
EXTKSRT002-18P

to Main board

Main board

Front panel assembly

1-20

Mechanism adjustment section

Item Adjusting & Confirmation Methods Adjust Std. Value

1. Tape running
adjustment

2. Azimuth
adjustment
confirmation

a) At Forward playmode, using mirror tape, make adjustment
with Azimuth screw A and Azimuth screw B, without curl of 4
parts of head tape guide.
b) At Reverse play mode, using mirror tape, make adjustment
with Azimuth screw A and Azimuth screw B, without tape
curl of 4 parts of head guide.
c) At Forward / Reverse play mode, make confirmation of no
tape curl of 4 parts of head tape guide.

a) At forward play mode, make adjustment of peak of Lch / Rch
output with Azimuth screw A.
* For Oscilloscope litharge corrugation, set 45 as standard.
b) At Reverse play mode, make adjustment of peak of Lch / Rch
output with Azimuth screw B.
* For Oscilloscope litharge corrugation, set 45 as standard.
c) With AC volt meter confirm the difference of output for 4ch
between Lch / Rch at forward play mode and Lch / Rch
Reverse play mode being within 3.0dB.
d) After operation, make confirmation of Lch / Rch azimuth
output being within 1.0dB from adjustment value.

KS-FX732R

Azimuth
screw A

Azimuth
screw B

2.T ape Speed and
Wow & Flutter

HEAD

Tape guide

OK

HEAD TAPE

1.Check to see if the reading of the frequency counter & W ow
flutter meter is within 2940-3090 Hz( FWD/REV ), and less
than 0.35% ( JIS RMS ).

2.In case of out of specification, adjust the motor with a built­in volume resistor .

Tape curl NG

0

Phase

Built-in
volume resistor

45

T ape Speed
2940-3090Hz
Wow&Flutter
Less than

0.35%
(JIS RMS)

3.Playback
Frequency
response

1.Play the test tape ( VT724 : 1kHz ) back and set the volume
position at 2V .

2.Play the test tape ( VT739 )back and confirm 0 3dB at1kHz/
10kHz and -4+2dB at 1kHz/63Hz.

3.When 10kHz is out of specification, it will be necessary to
read adjust the azimuth.

Speaker out
1kHz/10kHz
: 0dB 3dB,
63Hz/1kHz
: -4dB+2dB,

1-21

KS-FX732R

Description of major ICs

HA13164A(IC901):Regulator

1.Terminal layout

EXT

ANTOUT

ACC-IN

5.6V

SW5V

ACC-HOLD

ANTCTR

MEMORY

123456789101112131415

2.Block diagram

MEMDET9VPWR-CNT8VILL-10V

ILL-ADJ

GND

3.Pin function

11

12

10

8

2

1

7

Surge Protector

BIAS TSD

15

3

TAB

note1) TAB (header of IC)

13

connected to GND

9

6

4

5

14

UNIT R:

C:F

1-22

Pin No. Symbol Function

1
2

EXT
ANTOUT

Output voltage is VCC-1 V when M or H level applied to CTRL pin.
Output voltage is VCC-1 V when M or H level to CTRL pin and H level

to ANT-CTRL.
3
4
5
6
7
8
9

10
11
12
13
14
15

ACC-IN

5.6V
SW5V
ACC-HOLD
ANTCTR
MEMORY
MEMDET
9V
PWR-CNT
8V
ILL-10V
ILL-ADJ
GND

Connected to ACC.

Regular 5.6V.

Output voltage is 5V when M or H level applied to CTRL pin.

Output for ACC detector.

L:ANT output OFF , H:ANT output ON

Connected to VCC.

Low battery detect.

Output voltage is 9V when M or H level applied to CTRL pin.

L:BIAS OFF, M:BIAS ON, H:CD ON

Output voltage is 8V when H level applied to CTRL pin.

Adjustment pin for ILM output voltage.

Output voltage is 10V when M or H level applied to CTRL pin.

Connected to GND.

CXA2559Q(IC401):Playback equalizer amplifier with music sensor

30

29

28

27

26

1.Pin layout

10

3.Pin function

2.Blockdiagram

31

1

30

21

32
33
34
35
36
37
38
39
40

45k

7k/12k

300k

300k

7k/12k

1

30k

30k

­+

F2

F1

+

-

2

100k

X1

X1

100k

3

4

25

T2

BIAS

MUTE

TAPE EQ

FWD/RVS

LPF

T1

5

6

Vcc

F3

KS-FX732R

24

23

22

21

24dB

-

+

MS MODE

-

24dB

8

DET

9

+

-

+

7

MS ON/

OFF

10

20
19
18
17
16
15
14
13
12
11

Pin No.

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

Symbol
PBTC1

PBOUT1

OUTREF1

TAPEIN1

Vcc

NC
OUT1
TCH1

NC

MSLPF

G2FB

GI1FB
MSTC

MSOUT

NC

NRSW

MUTE

METAL

DIRECTION

FF/REW

MSSW

NC
TCH2
OUT2

DIREF

GND

TAPEIN2

OUTREF2

PBOUT2

PBTC2
PBFB2

PNRIN2

PBGND
PBFIN2

VCT

PBREF
PBFIN1
PBGND

PBRIN1

PBFB1

I/O

Function

-

Terminal of capacity of reproduction equalizer reproduction

O

Equalizer output terminal

O

Output standard terminal

I

Tape input terminal

-

Power supply terminal

-

Non connection

O

Line-out output terminal
Time constant for the HLS

-

Non connection

-

Detection LPF terminal between tunes

-

Detection level set terminal between tunes

-

Detection level set terminal between tunes

-

Time constant connection terminal for the detection between tunes

O

Detection output terminal between tunes

-

Non connection
Dolby NR control

I

Mute function control terminal

I

Reproduction equalizer control terminal

I

Head change control terminal

I

Detection mode control terminal between tunes

I

Detection function control terminal between tunes

-

Non connection
Time constant for the HLS

O

Line-out output terminal

-

Resistance connection terminal for standard current setting

-

Earth terminal

I

Tape input terminal

O

Output standard terminal

O

Reproduction equalizer output terminal

-

Terminal of capacity of reproduction equalizer

I

Reproduction equalizer return terminal

I

Reproduction equalizer input terminal

-

Reproduction equalizer system earth terminal

I

Reproduction equalizer input terminal

O

Middle point terminal

O

Reproduction equalizer standard terminal

I

Reproduction equalizer input terminal

-

Reproduction equalizer system earth terminal

I

Reproduction equalizer input terminal

I

Reproduction equalizer return terminal

1-23

KS-FX732R

UPD178018AGC-585(IC701) : Main system control CPU

1. Pin layout

2. Pin function
Pin No.

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

80 ~ 61

1

~

20

21 ~ 40

60

~

41

Port Name I/O Descriptions

KEY 0
KEY 1
KEY 2
LEVEL
SM
SQ
LCDCE
LCDDA
LCDSCK
BUSI/O
OPEN
BUSSI
BUSSO
BUSSCK
NC
NC
NC
NC
INLOCK
NC
GNDPORT
VDDPORT
NC
AFCK
MONO
FM/AM
SEEK/STOP
NC
IFC
VDDPLL
FMOSC
NC
GNDPLL
AMEO
FMEO
IC
SD/ST
STAGE0
NC
MOTOR

I
I
I
I
I

I
O
O
O

I

I

I
O

I/O

-

-

-

-

-

-

-

­O
O
O
O
O

I
I

-

I

-

­O
O

-

I
I

­O

Key input 0
Key input 1
Key input 2
Level meter input
S.meter level input
S.Quality level input
CE output to LCD driver
Data output to LCD driver
Clock output to LCD driver
I/O selector output for J-BUS, H : OUT, L: INPUT
Door open detect input
J-BUS Data input
J-BUS Data output
J-BUS Clock in/output
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Port GND
Port Vdd
Non connect
AF check output, L: AF check
Monaural on /off selecting output, H:mono on
FM/AM switching output L : FM H : AM
Auto seek /stop selecting output, H: Seek, L:Stop
Pulse signal input port for Cruise control
FM/AM midle frequency counter input
PLL Vdd
FM/AM limited generator frequency input
None connect
PLL GND
AM error out output
FM error out output
GND
Station detector, Stereo signal input, H:Find Station, L:Stereo
Pull up
Non connect
Main motor output

1-24

Pin No.

41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80

Port Name I/O Descriptions

FF/REW
F/R
DOLBY
MSIN
I2CCLK
I2CDAO
I2CDAI
REEL
SUBMO1
SUBMO2
MODE
TAPEIN
STANDBY
NC
NC
NC
NC
NC
NC
MUTE
PCNT
TELMUTE
NC
NC
NC
NC
ACCDET
POWER
RDSSCK
RDSDA
REMOCON
DETACH
J-BUSINT
REGCPU
GND
X2
X1
REGOSC
VDD
RESET

I
O
O

I
O
O

I
O

I
O
O
O

I

-

-

-

-

-

­O
O

I

-

-

-

-

I

O

I
I
I
I
I

-

-

-

I

-

-

-

Output for input signal lev el s witching f or MS L : FF,REW H : PLAY
FWD,REV running direction s witch signal input
Dolby on "H" output
MS input
I2C information clock output
I2C information data output
I2C information clock input
Switch for detecting tape end position
Sub motor clock direction input
Sub motor clock opposite detection drive output
Mechanism mode position detection input
Cassette in detection input H : cassette in L : cassette out
Standby position detection input H : eject side L : operation side
Non connect
Non connect
Non connect
Non connect
Non connect
Non connect
Mute output , L : mute on
Power ON /OFF switching output , H : power on
Telephone mute signal detection input
Non connect
Non connect
Non connect
Non connect
Power sa v e 1 Working togethe ACC Power save : L
Power sa v e 2, Working together Back up by H input, stop mode
Clock input for RDS
RDS data input
Remocom input
Detach signal input H : Power save
Cut-in input for J-BUS signal
Regulator for CPU power supply, Connect the GND with0.1 F.
Ground
Connecting the crystal oscillator for system clock
Connecting the crystal oscillator for system clock
Regulator for oscillator circuit.Connect the GND with 0.1 F.
Vdd
Pull up

KS-FX732R

UPD178018AGC-585(2/2)

1-25

KS-FX732R

LA4743K(IC301):Power AMP

1.Block diagram

6 20

11

1

12

4

10

Stand by

Switch

Ripple

Filter

-

+

Protective

circuit

-

+

Mute

circuit

+

9

-

7

8

+

5

­3

2

22

1-26

15

25

13

14

16

Muting &

ON Time Control

Circuit

-

+

Protective

circuit

-

+

+

17

-

19

18

+

21

-

23

24

2.Terminal layout

TAB

GND

KS-FX732R

RROUT-

STANBAY

RROUT+

VCC

FRONT-

GND

FRONT+

RIPPLE

FRIN

RRIN

SGND

RLIN

FLIN

ONTIME

FLOUT+

GND

FLOUT-

VCC

RLOUT+

MUTE

RLOUT-

GND

NC

3.Pin function

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

SymbolPin No. Function

TAB
GND
RROUT­STANBAY
RROUT+
VCC
FRONT­GND
FRONT+
RIPPLE
FRIN
RRIN
SGND
RLIN
FLIN
ONTIME
FLOUT+
GND
FLOUT­VCC
RLOUT+
MUTE
RLOUT­GND
NC

Header of IC
Power GND
Outpur(-) for front Rch
Stand by input
Output (+) for front Rch
Power input
Output (-) for rear Rch
Power GND
Output (+) for rear Rch
Ripple filter
Rear Rch input
Front Rch input
Signal GND
Front Lch input
Rear Lch input
Power on time control
Output (+) for rear Lch
Power GND
Output (-) for rear Lch
Power input
Output (+) for front
Muting control input
Output (-) for front
Power GND
No connection

LA4743K

1-27

KS-FX732R

LC75823W (IC651) : LCD driver

1. Pin Layout & Symbol

DI

CLOCKCEOSC

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

1

S1

2

S2

3

S3

4

S4

5

S5

6

S6

7

S7

8

S8

9

S9

10

S10

11

S11

12

S12

13

S13

14

S14

15

S15

16

S16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Vss

VDD2

VDD1

INH

VDD

COM3

COM2

COM1

S52

S51

S50

S49

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33

S48
S47
S46
S45
S44
S43
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33

2. Pin Function
Pin No.

3 to 52

53 to 55

56
57

60
61

63

S17

S18

Symbol

S3 to S52

COM1 to COM3

VDD

INH

Vss

OSC

CLOCK

S19

S20

S21

S22

S23

S24

S25

S26

S27

S28

S29

S30

S31

S32

I/O

O

Segment output pins used to display data transferred

Function

by serial data input.

O

Common driver output pins. The frame frequency is given
by : t0=(fosc/384)Hz.

--

Power supply connection. Provide a voltage of between

4.5 and 6.0V.

I

Display turning off input pin.
INT="L" (Vss) ----- off (S1 to S52, COM1 to COM3="L"
INT="H" (VDD)----- on
Serial data can be transferred in display off mode.

--

Power supply connection. Connect to GND.

I/O

Oscillator connection.
An oscillator circuit is formed by connecting an external
resistor and capacitor at this pin.

I

Serial data
interface connection to the controller. CL : Sync clock

1-28

SAA6579T-X(IC71):RDS

1.Pin layout

1

DATA

2

Vref

3

MUX

4

Vdd

5

GND

6

CIN

7

SOUT

8

2.Block diagram

KS-FX732R

CLK

16
15

OSCO

14

OSCI

13

Vdd

12

GND

11

TEST

10

MODE

9

121413

3.Pin function

4

8

7

CLOCKED
COMPARATOR

5

3

REFERENCE
VOLT AGE

Pin No.

1
2
3
4

ANTI­ALIASING
FILTER

6 11

Symbol

VP1

57 kHz
BAND PASS
(8th ORDER)

COSTAS LOOP
VARIABLE AND
FIXED DIVIDER

CLOCK
REGERATION
AND SYNC

RECONSTRUCTION
FILTER

TEST LOGIC AND OUTPUT
SELECTOR SWITCH

Description

OSCILLATOR
AND
DIVIDER

BIPHASE
SYMBOL
DECODER

910

No connect
DATA
Vref
MUX

RDS data output

Reference voltage output (0.5V

Multiplex signal input

DDA

QUALITY BIT
GENERATOR

DIFFERENTIAL
DECODER

)

1

2

16

15

10
11
12
13
14
15
16

5
6
7
8
9

Vdd
GND
CIN
SOUT
MODE
TEST
GND
Vdd
OSCI
OSCO

+5V supply voltage for analog part

Ground for analog part (0V)

Sub carrier input to comparator

Sub carrier output of reconstruction filter

Oscillator mode / test control input

Test enable input

Ground for digital part (0V)

+5V supply voltage for digital part

Oscillator input

Oscillator output

No connect
CLK

RDS clock output

1-29

KS-FX732R

TEA6320T-X (IC161) : E.volume

1.Pin layout

2.Block diagram

10 8 9 7 6

5

12

SDA

1

GND

2

OUTRL

OUTFL

MUTE

TL
B2L
B1L

IVL

ILL

QSL

IDL
ICL

IMD

IBL
IAL

3
4
5
6
7
8

9
10
11
12
13
14
15
16

3.Pin functions

Pin

Symbol

No.

SDA

1

SCL

32

VCC

31

OUTRR

30

OUTRF

29

TR

28

B2R

27

B1R

26

IVR

25

ILR

24

QSR

23

IDR

22

VREF

21

ICR

CD-CH

TAPE

TUNER

20
19
18
17

CAP
IBR
IAR

I/O

Serial data input/output.

I/O

MUTE

21
31

2

19

16
15
13
11

14

22
20
18
17

Functions Functions

POWER
SUPPLY

SOURCE

SELECTOR

23 25 24 26 27 28

VOLUME 1

+20 to -31 dB

LOUDNESS

LEFT

VOLUME 1

+20 to -31 dB

LOUDNESS

RIGHT

Pin
No.

17

Symbol

IAR

BASS
LEFT

+15 dB

LOGIC

BASS
RIGHT
+15 dB

I/O

I

Input A right source.

TREBLE

LEFT

+12 dB

TREBLE

RIGHT
+12 dB

FUNCTION

ZERO CROSS

DETECTOR

VOLUME 2

0 to 55 dB
BALANCE

FENDER REAR

VOLUME 2
0 to 55 dB
BALANCE

FENDER FRONT

HC BUS

REC

VOLUME 2
0 to -55dB
BALANCE

FENDER FRONT

VOLUME 2
0 to -55dB
BALANCE

FENDER REAR

3

4

32

1

29

30

2
3
4
5
6
7
8

9
10
11
12
13
14
15
16

GND
OUTRF
OUTFL

TL
B2L
B1L

IVL

ILL

QSL

IDL

MUTE

ICL

IMO

IBL
IAL

Ground.

­output left rear.

O

output left front.

O

Treble control capacitor left channel or

I

input from an external equalizer.
Bass control capacitor left channel or

-

output to an external equalizer.
Bass control capacitor left channel.

­Input volume 1. left control part.

I

Input loudness. left control part.

I

Output source selector. left channel.

O

Not used

­Not used

­Input C left source.

I

Not used

­Input B left source.

I

Input A left source.

I

18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

IBR

CAP

ICR

VREF

IDR

QSR

ILR

IVR
B1R
B2R

TR

OUTRF

OUTRR

Vcc
SCL

I

Input B right source.

-

Electronic filtering for supply.

I

Input C right source.

-

Reference voltage (0.5Vcc)

-

Not used

O

Output source selector right channel.

I

Input loudness right channel.

I

Input volume 1. right control part.

-

Bass control capacitor right channel
Bass control capacitor right channel or

O

output to an external equalizer.
Treble control capacitor right channel or

I

input from an external equalizer.

O

Output right front.

O

Output right rear.

-

Supply voltage.

I

Serial clock input.

1-30

HD74HC126FP-X (IC751) : Buffer

KS-FX732R

1.Terminal layout

1
2
3
4
5
6
7

2.Block diagram

Input

14
13
12
11
10

9
8

Vcc Vcc

1A
2A
3A
4A
1C
2C
3C

See Function Table

4C

3.Pin function

Output

1Y

2Y

Output

2Y

Output

3Y

Output

4Y

Input Outout

C

A

L

X

H

L

H

H

Y
Z
H
L

1k

S1

CL

1k

Sample as Load Circuit 1
Sample as Load Circuit 1

Sample as Load Circuit 1

LB1641 (IC402) : DC motor driver

1. Pin layout

1 2 3 4 5 6 7 8 9

GNDOUT1 P1

VZ IN1 IN2

VCC1

VCC2 P2

10

OUT2

2. Pin function

Input Output

IN1 IN2 OUT1 OUT2

0 0 0 0
1 0 1 0
0 1 0 1
1 1 0 0

Mode

Brake

CLOCKWISE

COUNTER-CLOCKWISE

Brake

1-31

KS-FX732R

VICTOR COMPANY OF JAPAN, LIMITED

MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.49695)

200202