JVC KS-FX811, KS-FX911 Service Manual

KS-FX911/KS-FX811

SERVICE MANUAL

CASSETTE RECEIVER

KS-FX911/KS-FX811

Contents

SOUND

U

SOURCE

F

R

D

VOL

VOL

50W X 4

KS-FX911

Multi
Music
Scan

TAPE

KS-FX911

SOUND

U

SOURCE

F

R

D

VOL

VOL

50W X 4

KS-FX811

Multi
Music
Scan

TAPE

Area Suffix

KS-FX811

Difference point

KS-FX911

KS-FX811

LCD Display

Multi

Nega

Dimmer

Cellular Muting

U --------------------- Other Areas

Safety precaution
Disassembly method
Adjustment method
Description of major ICs

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

1- 2
1- 3
1-17
1-20~29

No.49730

Apr. 2002

KS-FX911/KS-FX811

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>

KS-FX911/KS-FX811

Removing the front panel unit

(See Fig.1)

1.

Press the release switch and remove the front panel
unit in the direction of the arrow.

Removing the front chassis
(See Fig.2 to 4)

1.

Remove the two screws A attaching the front
chassis.

2.

Remove the two screws B on each side of the body.

3.

Release the two joints a and the two joints b on the
sides. Release the two joints c at the bottom and
remove the front chassis toward the front.

Eject button

A

Joint a

Front panel assembly

Fig.1

Front chassis assembly

Fig.2

Joint c

Joint c

B

Joint a

Front chassis assembly

Heat sink

Fig.3-1

Fig.3-2Fig.4

Joint b

Joint b

B

Front chassis
assembly

1-3

KS-FX911/KS-FX811

Removing the heat sink (See Fig.5)

1.

Remove the two screws C and the two screws D on
the left side of the body.

Removing the bottom cover

(See Fig.6 and 7)

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 four joints c and
joint d with the bottom cover and the body using a
screwdriver.

D

Joint c

C

Fig.5

Heat sink

D

Bottom cover

CAUTION:

When disengaging the joint d using a
screwdriver, do not damage or break the
main board.

Joint d

Rear panel

Bottom cover

Joint c

Joint c

Fig.6

Joint c

Joint d

Rear panel

Fig.7

1-4

KS-FX911/KS-FX811

Removing the main board

(See Fig.8 and 9)

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 E, the five screws F and the two
screws G attaching the rear panel on the back of the
body. Remove the rear panel.

2.

Remove the two screws H attaching the main board
on the bottom of the body. Disconnect connector
CN701 on the main board in the direction of the
arrow.

G

H

Rear panel

F

E

F

FG

Fig.8

H

Removing the cassette mechanism assembly

(See Fig.10)

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

1.

Remove the four screws I attaching the cassette
mechanism assembly from the top cover.

Main board assembly

Fig.9

Cassette mechanism assembly

I

I

Fig.10

CN701

I

I

Top cover

1-5

KS-FX911/KS-FX811

Removing the (LCD & key) control switch
board (See Fig.11 to 13)

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

1.

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

2.

Unjoint the nine joints e with the front panel and the
rear cover.

3.

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

Front panel

J

J

Fig. 11

Joint e

Rear cover

J

J

Joint e

Joint e

LCD & Key control board

Joint e

Fig. 12

Fig. 13

1-6

KS-FX911/KS-FX811

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-FX911/KS-FX811

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-FX911/KS-FX811

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-FX911/KS-FX811

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)

1-10

Fig.20

Flywheel assembly (F)

Fig.21

Flywheel assembly (R)

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

KS-FX911/KS-FX811

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

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

1-11

KS-FX911/KS-FX811

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

1-12

FFC pad

Fig.29

KS-FX911/KS-FX811

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

1-13

KS-FX911/KS-FX811

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

1-14

Reflector gear

Polywasher

Fig.36

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’.

KS-FX911/KS-FX811

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'

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

1-15

KS-FX911/KS-FX811

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

1-16

Adjustment method

KS-FX911/KS-FX811

Test Instruments reqired for adjustment

1.Digital osclloscope(100MHz)

2.Frequency Counter meter

3.Electric voltmeter

4.Wow & flutter meter

5.Test Tapes

VT724
VT739

VT712
VT703

6.Torque gauge

Power supply voltage

Load impedance
Line out

For playback frequency measurement

For wow flutter & tape speed measurement

Measuring conditions(Amplifier section)

for DOLBY level measurement

For head azimuth measurement

Cassette type for CTG-N
(mechanism adjustment)

DC14.4V(10.5~16V)

4 (2Speakers connection)

20k

Frequency Range

FM : 87.5 MHz to 108 MHz

AM : 531 kHz to 1602 kHz

DUMMY LOAD

Exclusive dummy load should be used for AM
and FM dummy load,there is a loss of 6dB
between SSG output and antenna input. The
loss of 6dB need not be considered since
direct reading of figures are applied in this
working standard.

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.

AM mode 999kHz/62dB,INT/400Hz,30%
modulation signal on receiving.

FM mono mode 97.9MHz/66dB,INT/400Hz,22.5kHz

deviation pilot off mono.

FM stereo mode 1kHz,67.5kHz dev. pilot7.5kHz dev.

Output level 0dB(1 V,50 /open terminal).

Arrangement of Adjusting

Cassette Mechanism Section

Capstan motor

Cassette mechanism
(Surface)

Azimuth screw
(Forward side)

Playback head

Tape speed adjust

Azimuth screw
(Reverse side)

1-17

KS-FX911/KS-FX811

Arrangment of adjusting

Head amplifier board section (Reverse side)

VR402:Rch
(Dolby NR level adj)

C413

FSMW1093A

C423

D401

R426

R411

VR402

T11

B409

R425

R424

IC402

R410

R416

Q401

1

B407

R401

C424

B406

D402

C425

C419

C422

C414

B408

C421

B403

C416

R420

Q403

C418

R412

R414

R415

R418

B411

B410

21

R413

R417

C417

B404

2

C415

1

B413

VR401:Rch
(Dolby NR Frequency response adj)

CJ403

11

C412

1

IC401

31

B405

B412

C411

R423

B401

R408

VR401

C410

B402

C409

CJ401

C405

R407

C406

C408

C402

R406

C407

R403

1

R405

C404

R404

C403

R422

C401

R402

2

Q402

1

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.

to Cassette mechanism

Cassette mechanism

Extension cord
EXTKSRT002-18P

1-18

EXTKSRT002-18P

to Main board

Item Adjustment and check method Adjust Spec

1.Tape position

a)

Playback at FWD side, use the mirror tape and
adjuste azimuth screw A and B, check the tape
position at tape guide position of the head.

b)

Playback at REV side, use the mirror tape and
adjuste azimuth screw A and B, check the tape
position at tape guide position of the head.

c)

Playback at FWD and REV both side, check the
tape position at tape guide position at the head.

KS-FX911/KS-FX811

Azimuth
screw A

Azimuth
screw B

2.Head azimuth ajust
and check

a)

Playback at FWD side, adjuste azimuth screw A
to make peak position of Lch /Rch.

*

Oscilloscope wave forme standard is 45 digrees.

b)

Playback at REV side, adjuste azimuth screw B to
make peak position of Lch/Rch.

*

Oscilloscope wave forme standard si 45 digrees.

c)

Chech the level difference of FWD side and REV
side less than 3dB by VTVM.

d)

After operation check, Lch/Rch azimuth output
level difference is less than 1 dB at adjustment
level.

OK

Head

Tape guide

Tape position NG

0

PHASE

45

3.Tape speed
WOW & Flutter

4.Playback frequency
responce

Head

a)

Check the frequency counter and wow flutter
meter are 2940~3090Hz(FWD/REV), less than

0.35%(RMS).

b)

If tape speed is not clear the specification, adjust
the v.resistor inside of motor.

a)

Playback the test tape(VT724:1kHz), spreaker
output set to 2V by set volume.
Playback the test tape(VT739), check level differe

b)

to 0 3dB at 1kHz/10kHz, -4dB 2dB at
1kHz/63Hz.
10kHz level is not clear the specification, readjust
the head azimuth.

Tape

Internal
v.resistor

Tape speed
2940~3090Hz
WOW & Flutter
less than 0.35%
(RMS)

Speaker output
1kHZ/10kHz
:0 3dB
1kHZ/63Hz
:-4 2dB

1-19

KS-FX911/KS-FX811

Description major of ICs

AN80T05 (IC901) : Regulator

1.Terminal layout & Block diagram

Reference Voltage

ASO & Peak

Thermal

Protection

Current Protection

Pre

Drive

1 2 3 4 5 6 7 8 9 10 11 12

ILL

10V

2.Pin function

Pin
No.

1
2
3
4
5
6
7
8

9
10
11
12

Pre

Drive

MODE2 MODE1 STB VDD

5.6V

AMP

Out

AMP VCC ANT COM

Symbol Function

ILL
MODE2
MODE1

STB
VDD
AMP
VCC

ANT

COM

AM
FM

GND

10V power supply for illumination.
When 5V is input,becomes AM. and the antenna output is turned on.
When 5V is input,becomes AM. and the output of FM is switched.
When 5V is input, outputs to ILL,COM,and AMP. It is 0V usually.

5.6V power supply.
Power supply supply to remote amplifier
Back up. connects with ACC with it.
Power supply supply to auto antenna.

8.7V power supply.
The power supply of 8.7V to AM.
The power supply of 8.7V to FM.
Ground

AMP

Out

Pre

Drive

Pre

Drive

8.7VAM8.7VFM8.7V

Pre

Drive

GND

1-20

KS-FX911/KS-FX811

CXA2560Q (IC401) : Dolby B type noise reduction system with play back equalizer amp.

1.Pin layout & block diagram

PBFB2

31

PBRIN2

32

PBGND

33

PBFIN2

34

VCT

35

45k

PBREF

36

PBFIN1

37

PBGND

38

PBRIN1

39

PBFB1

40

2. Pin function

Pin No. Symbol

1

2

3
4
5
6
7
8
9

10

11
12
13

14
15
16
17
18

19
20
21
22
23
24

PBTC1

PBOUT1

OUTREF1

TAPEIN1

Vcc

NC

LINEOUT1

TCH1

NC

MSLPF

G2FB
G1FB

MSTC

MSOUT

NC

NRSW

MUTESW

TAPESW

DRSW

MSMODE

MSSW

NC

TCH2

LINEOUT2

PBTC2

30 29 28

7k/12k

12345

PBTC1

300k

30k

30k

300k

7k/12k

F2

F1

PBOUT2

­+

+

-

PBOUT1

OUTREF2

27

70 /120

1

1

70 /120

OUTREF1

TAPEIN2

100k

T2

100k

TAPEIN1

GND

26

T1

Vcc

I/O Function

Playback equalizer amplifier

­capacitance

Playback equalizer amplifier

O

output
Output reference

O

TAPE input

I

Power supply

-

­Line output

O

Time constant for the HLS

-

­Cut-off frequency adjustment

­of the music sensor LPF

Music signal interval detection

­Music signal interval detection

­Time constant for detecting

­music signal interval

Music sensor out

O

No use

­Dolby NR control

I

Mute function control

I

Playback equalizer amplifier

I

control
Head select control

I

Music sensor mode control

I

Music sensor control

I

­Time constant for the HLS

­Line output

O

25

FWD/RVS

LPF

DIREF

BIAS

MUTE

TAPE EQ

Vcc

+

-

6

NC

TCH2

LINEOUT2

23 22 21

24

OFF/B

+

-

F3

OFF/B

-

+

8910

7

TCH1

LINEOUT1

NR

NR

NC

MS MODE

NR MODE

MS ON/

DET

NC

OFF

MSSW

MSLPF

20

19

18

17

16

15

14

13

12

11

MSMODE

DRSW

TAPESW

MUTESW

NRSW

NC

MSOUT

MSTC

G1FB

G2FB

Pin No. Symbol

25

26
27
28
29

30

31

32

33

34

35
36

37

38

39

40

DIREF

GND

TAPEIN2

OUTREF2

PBOUT2

PBTC2

PBFB2

PBRIN2

PBGND

PBFIN2

VCT

PBREF

PBFIN1

PBGND

PBRIN1

PBFB1

I/O Function

-

Resistance for setting the
reference

-

Ground

I

TAPE input

O

Output reference

O

Playback equalizer amplifier
output

-

Playback equalizer amplifier
capacitance

I

Playback equalizer amplifier
feedback

I

Playback equalizer amplifier
input

-

Playback equalizer amplifier
ground

I

Playback equalizer amplifier
input

O

Center

O

Playback equalizer amplifier
reference

I

Playback equalizer amplifier
input

-

Playback equalizer amplifier
ground

I

Playback equalizer amplifier
input

I

Playback equalizer amplifier
feedback

1-21

KS-FX911/KS-FX811

HD74HC126P (IC801) : Changer control

1.Pin arrangement 2. Pin function

11C

21A

31Y

42C

52A

62Y

7GND

3. Block diagram

1A

( TOP VIEW )

14

13

12

11

10

9

8

Vcc

4C

4A

4Y

3C

3A

3Y

Input Output

CA

X

LLH

HH H

Y

ZL

1Y

1C

2A

2C

3A

3C

4A

2Y

3Y

4Y

1-22

4C

KIA7810PI (IC902) : Regulator

1.Pin layout 2.Block diagram

KS-FX911/KS-FX811

1 INPUT

1 2 3

R4 R18

Q12

R5

Z1

R6

R7

R1

Q1

Q13

R10 R3

Q8

Q10

Q5

Q7

R8

R2

Q6

Q2

R15

Q14

C1

R14

Q4

Q9

R16

R9

Q15

Q3

Q11

R13

R21

R17

Q16

R12

Q17

R11

3 OUTPUT

R20

R19

2 GND

RPM6938-SV4(IC602) : Remote sensor

1.Block diagram

AMP

I/V
conversion

PD

magnetic shield

BPF

fo
trimming
circuit

AGC

Detector

Vcc

Comp

Vcc

22k

Rout

GND

1-23

KS-FX911/KS-FX811

LA47503(IC301) : Power amp.

1.Block diagram

Vcc 1/2 Vcc 3/4

6 20

2200 F 0.022 F

+

IN 1

TA B

IN 2

ST BY

R.F

47 F

IN 3

PRE GND

+

0.22 F

+

0.22 F

+5V
ST ON

+

0.22 F

N.C

11

+

-

+

-

9

7

OUT 1+

OUT 1-

1

PWR GND1

8

OUT 2+

5

OUT 2-

3

PWR GND2

12

Protective

circuit

-

+

+

-

2

4

Stand by

Switch

Mute

10

+

Ripple

Filter

Mute

22

circuit

3.3 F

+

15

-

+

-

17

19

10K

+

OUT 3+

OUT 3-

Low Level
Mute ON

25

18

24

PWR GND3

OUT 4+

13

Protective

circuit

+

-

1-24

IN 4

0.22 F

ON TIME C

22 F

+

14

Muting &

16

+

ON Time Control

Circuit

+

-

OUT 4-

23

PWR GND4

24

KS-FX911/KS-FX811

2.Terminal layout

TAB

GND

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

RF OUT-

STANDBY

RF OUT+

VCC

RR OUT-

GND

RR OUT+

VREF

RRIN

RFIN

A.GND

LFIN

LRIN

ON TIME

LROUT+

GND

LROUT-

VCC

LFOUT+

MUTE

LFOUT-

GND

SymbolPin No. Function

TA B
GND
RFO(-)
STBY
RFO(+)
VCC1/2
RRO(-)
GND
RRO(+)
VREF
RRIN
RFIN
A.GND
LFIN
LRIN
ONTIME
LRO(+)
GND
LRO(-)
VCC3/4
LFO(+)
MUTE
LFO(-)
GND
NC

Header of IC
Power GND
Output(-) 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
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
Non connection

LA47503

LB1641 (IC851,IC852) : DC motor driver

1. Pin layout

1 2 3 4 5 6 7 8 9

GND OUT1 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

1-25

KS-FX911/KS-FX811

LC72366-9A81 (IC701) : System CPU

1. Pin layout

25

~

40

2. 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
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

J-BUS SO

J-BUS SCK

J-BUS I/O

TEL-MUTE

EVOL SCK

ANT REMOTE

MUTE CONTORL

FF/REW MODE

SEEK/STOP

RADIO/TAPE

24 ~ 1

41 ~ 64

Symbol FunctionPin No.
XIN

TEST2

J-BUS SI

LCD DA
LCD CL
LCD CE

SDA

SCL

OPEN

NC
NC
NC
NC
NC
NC
NC

NC
KS1
KS0

K3
K2
K1
K0

Vdd

TEST

MONO

NC

POWER

NC

NC

80

65

~

I/O

I

Crystal oscillator input port

-

Connect to GND

I

Data input for J-BUS information

O

Data output for J-BUS information

O

Clock output for J-BUS information

O

Switching signal output for J-BUS information I/O, H:Out L:In

I

Telephone mute signal detection input

O

Data output to LCD driver

O

Clock output to LCD driver

O

Chip enable output for LCD driver

O

E.volume clock output

O

E.volume clock output

O

Clock output for electrical volume information

I

Door open detecting

O

Antenna remote control output

O

Mute output

-

Non connection

-

Non connection

-

Non connection

-

Non connection

-

Non connection

-

Non connection

-

Non connection

-

Non connection

-

Non connection

O

Diode matrix output port for initial establishing

I

Diode matrix output port for initial establishing

I

Diode matrix output port for initial establishing

-

Non connection

I

Diode matrix output port for initial establishing

-

5V power supply port (+B)

I

Turn on all light indicator of LCD, L: All light a LED indicator

O

FF/REW mode select signal output

O

H:Auto seek, L: Stop Use both as IF count REQ and Seek/Stop

O

Forced monaural output port, H:Turn on Forced monaural

-

Non connection

-

Non connection

O

Power ON/OFF switching output

-

Non connection

-

Non connection

1-26

41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62

LEVELMETER

63
64
65
66
67
68
69
70

FM IF COUNT

71
72
73
74
75
76
77
78
79
80

MOTOR

SUBMO+

SUBMO-

BEEP

TAPE IN

STANDBY

REEL

MODE

F/R
MS

SD/ST

DETACH

JOG-0
JOG-1

J-BUS INT

REMOCON

BAND

DOLBY

NC
NC

MEM DET

S.METER

KEY2
KEY1
KEY0

ACCDET

SENSE

NC

NC
NC

Vdd

NC

FM OSC

VSS

NC

E0

TEST1

XOUT

I/OPort Name FunctionPin No.

Main motor output, H:Transport L: Stop

O

Sub-motor output(+), Loading direction to transport output

O

Sub-motor output(-), Eject direction to transport output

O

Non connection

­Switch for detecting to input cassette, L: Cassette in

I

Switch for detecting standby position

I

Switch for detecting tape end position

I

Detecting mode position input

I

Switch for detecting forward/reverse , H:FWD L:REV

I

MS input port,

I

Station detector, Stereo signal input, H:SD

I

Front panel detect

O

Rotary volume signal 0 input

I

Rotary volume signal 1 input

I

Cut in signal detecting port from J-Bus information

I

Remocon input

I

FM/AM band section

O

Dolby NR control

O

Non connection

­Non connection

­Back-up power supply detecting port, H:input L:no input

I

Pressure voice level voltage input for level meter.

I

S meter voltage input

I

Key 2 input port

I

Key 1 input port

I

Key 0 input port

I

Hold port for Acc detecting, L: Hold mode

I

Voltage sensor port

I

Non connection

­FM frequency detecting

I

Non connection

­Non connection

­5V power supply (+B)

­Non connection

­FM limited signal input

­Ground port for power supply

­Non connection

O

Error signal output port for PLL

­Test port for LSI, To connect ground

O

4.5MHz crystal oscillator output

KS-FX911/KS-FX811

LC72366-9A81(2/2)

1-27

KS-FX911/KS-FX811

LC75873NW(IC601):LCD Driver

1.Pin layout

60 41

61

80

1 20

3.Pin function

Pin No.

79,80
1,2,3
to 66

67
78
69

40

21

Pin name

S1/P1 TO S4/P4
S5 to S68

COM1
COM2
COM3

2.Block diagram

VDD1

VDD2

INH

OSC

VDD

VSS

I/O

O

O

S5

S4/P4

S3/P3

S2/P2

COM2

COM3

COMON

DRIVER

CLOCK

GENERATOR

COM1

S68

S67

DI

CL

SEGMENT DRIVER

SHIFT REGISTOR

ADDRESS

DETECTOR

CE

S1/P1

Description

Segment outouts for displaying the display data
transferred by serial data input.
The S1/P1 to S4/P4 pins can be used as general­purpose output ports under serial data control.

Common driver outputs.
The frame frequency f0 is given by :
f0 = (FOSC/384)Hz.

74

76
77
78

75

71

72

70

OSC

CE
CL
DI

INH

VDD1

VDD2

VDD

I/O

I
I
I

I

I

I

-

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

Serial data transfer inputs.
Connected to the controller.
CE:Chip enable
CL:Synchronization clock
DI:Transfer data

Display off control input
INH= "L"(VSS) Display forced off

S1/P1 to S4/P4 = "L"
(These pins are forcibly set to the
segment output port function and held
at the low level.)
S5 to S68 = "L"
COM1 to COM3"L"

INH = "H"(HDD) Display on
However, serial data transfer is possible when
the display is forced off by this pin.

Used for applying the LCD drive 2/3 bias voltage
externally. Must be connected to VDD2 when a
1/2 bias drive scheme is used.

Used for applying the LCD drive 1/3 bias voltage
externally. Must be connected to VDD1 when a
1/2 bias drive scheme is used.

Power supply connection.
Provide a voltage of between 3.0 and 6.0V.

1-28

73

VSS

-

Power supply connection. Connect to ground.

TEA6320T-X (IC161) : E.volume

1.Pin layout

2.Block diagram

10 8 9 7 6

KS-FX911/KS-FX811

5

12

SDA

1

GND

2

OUTLR

OUTLF

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

OUTLR

OUTLF

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.

1-29

KS-FX911/KS-FX811

VICTOR COMPANY OF JAPAN, LIMITED

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

(No.49730)

200204