Jvc Ks-fx901 User manual

SERVICE MANUAL

CASSETTE RECEIVER

No.49627

FEB. 2001

KS-FX901/KS-FX801

Area Suffix

U Other areas

Scan

Music

Multi

MO

DISP

SCAN

LOUD

8 9 10 11 127

RM-RK31

Scan

Music

Multi

MO

DISP

SCAN

LOUD

8 9 10 11 127

RM-RK31

KS-FX901

KS-FX801

Contents

Safety precaution

Disassembly method

Adjustment method

Description of major ICs

1- 2

1- 3

1-11

1-15~25

Difference

point

KS-FX901

KS-FX801

Front

panel

Light Gold

Metallic Gray

Trim

plate

Light Gold

Gray

LCD

color

Multi color

White

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TEL 13942296513 QQ 376315150 892498299

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KS-FX901/KS-FX801

1-2

!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.

Safety precaution

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KS-FX901/KS-FX801

1-3

Disassembly method

1.

2.

Remove the two screws Aattaching the front

chassis.

Insert a screwdriver to the two joints aon the side

of the front chassis, two joints bon the right side

and one joint cfrom upside, then detach the front

chassis toward the front side.

Removing the front chassis (See Fig.1~2)

Removing the heat sink (See Fig.3)

1. Remove the three screws Battaching the heat sink

on the left side of the body, and remove the heat

sink.

b

a

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A

B

Heat sink

Fig.2

Fig.1

Fig. 3

Front chassis

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KS-FX901/KS-FX801

1-4

Removing the bottom cover (See Fig.4)

1.

2.

Turn the body upside down.

Insert a screwdriver to the two joints dand two

joints eon both sides of the body and the joint fon

the back of the body, then detach the bottom cover

from the body.

Removing the rear panel (See Fig.5 )

1.

2.

3.

4.

Remoe the front chassis.

Remove the heat sink.

Remove the bottom cover.

Remove the seven screws Battaching the rear

panel and one screw Cattaching the pine jack on

the back of the body.

Removing the main amplifier board

assembly (See Fig.6)

1.

2.

3.

4.

5.

Remove the front chassis.

Remove the bottom cover.

Remove the rear panel.

Remove the two screws Dattaching the main

amplifier board assembly on the top cover.

Disconnect connector CP701 on the main amplifier

board assembly from the cassette mechanism

assembly.

d

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f

Bottom cover

Fig. 4

Fig. 5

Fig. 6

B

C

B

D

CP701

Main board assembly

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KS-FX901/KS-FX801

1-5

Cassette mechanism assembly

F

FFTop cover

Fig. 7

GG

Fig. 8

Fig. 9

LCD & Key control board

F

Removing the Cassette mechanism

assembly (See Fig.7)

1.

2.

3.

4.

Remove the front chassis.

Remove the bottom cover.

Remove the main amplifier board assembly.

Remove the fore screws Fattaching the cassette

mechanism assembly from the top cover.

Removing the control switch board

(See Fig.8 and 9 )

1.

2.

3.

Remove the front panel unit from the main body.

Remove the four screws Gattaching the rear cover

on the back of the front panel unit.

Remove the control switch board from the front

panel unit.

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KS-FX901/KS-FX801

1-6

For the 6pin wire extending from connector CN402

on the head amplifier board, disconnect it from the

head relay board.

Disconnect the card wire from connector CN403 on

the head amplifier board.

Remove the screw Aattaching the head amplifier

board.

Move the tab aas shown in Fig.2 and remove the

head amplifier board while moving it in the direction

of the arrow.

1.

2.

3.

4.

Removing the head amplifier board.

(See Fig.1 and 2)

Disconnect the 6pin wire from connector CN402 and

the card wire from CN403 on the head amplifier

board (Refer to Fig.1 and 2).

Remove the four screws Bon the bottom of the

cassette mechanism.

1.

2.

Removing the cassette mechanism

assembly (See Fig.1 to 3)

Fig.1

Cassette mechanism ass’y

Head relay

board

6pin

wire

CN402 CN403

CN402

Head amplifier board

Fig.2

Tab a

Head amplifier board

Fig.3

Cassette mechanism ass’y

B

A

Head amplifier board

CN403

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KS-FX901/KS-FX801

1-7

Unsolder the soldering bon the head relay board.

Remove the screw Cattaching the head relay board.

Remove the head relay board in the direction of the

arrow while releasing the two joints c.

1.

2.

3.

Removing the head relay board

(See Fig.4)

Remove the E washer attaching the load arm using

a pincette or something like that and remove the

spring d.

Move the part of the load arm marked upwards to

release it from the axis of rotation. Then rotate the

load arm in the direction of the arrow to remove it

from the cach.

1.

2.

Removing the load arm (See Fig.5)

Prior to performing the following procedure, remove

the head relay board.

Remove the screw Dattaching the sub chassis.

Push the tab ein the direction of the arrow to detach

the one side of the sub chassis. Then release the

sub chassis from the tab f.

1.

2.

Removing the sub chassis (See Fig.6)

Prior to performing the following procedure, remove

the head relay board, the load arm and the sub

chassis.

Remove the screw Eattaching the reinforce bracket.

Remove the reinforce bracket.

Push the tab gfixing the cassette holder in the

direction of the arrow and open the cassette holder

and the holder arm upward until they stop at an

angle of 45 degrees. Move the two joints hto the

side and remove the cassette holder and the holder

arm from the shaft.

1.

2.

3.

Removing the cassette holder and the

holder arm in the eject mode

(See Fig.7 and 8)

Fig.4 CSoldering b Joint c

Fig.6

Tab f

D

Tab e

Cach

Head relay board

Fig.7

Reinforce bracket

Reinforce

bracket

E

Cassette holder

Sub chassis

Head relay

board

Joint h

Holder arm

Load arm

Joint h

tab g

Fig.5

Spring d

Load arm E washer

Cassette mecha chassis

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KS-FX901/KS-FX801

1-8

Prior to performing the following procedure, remove

the head relay board and the sub chassis.

Remove the two screws Fattaching the play head

(The spring under the play head comes off at the

same time).

1.

Removing the play head (See Fig.9)

Prior to performing the following procedure, remove

the head relay board and the sub chassis.

Push each tab i in the direction of the arrow and pull

out the pinch rollers on both sides.

1.

Removing the pinch roller ass’y

(See Fig.9)

Unsolder the soldering jon the reel disc board.

Push the seven tabs kon the bottom of the cassette

mechanism assembly in the direction of the arrow.

1.

2.

Removing the reel disc board

(See Fig.10)

Unsolder the two soldering lof the motor and the sub

motor.

Release the sub motor from the three tabs m. Push

the sub motor upward and pull out it.

Remove the belt on the bottom of the cassette

mechanism assembly and remove the two screws G

attaching the motor.

1.

2.

3.

Removing the motor and the sub motor

(See Fig.10 and 11)

The motors can be detached before

removing the load arm.

ATTENTION:

Fig.8

Cassette holder

and holder arm

Joint h

Shaft

Joint h

Fig.9

Tab i

Pinch roller ass’yPinch roller ass’y

F

Play head

Spring

Fig.11

Sub motor

Tab m

Load arm

Motor

Soldering l

Tab m

Soldering l

Tab m

Soldering j

Pinch roller ass’y

Tab i Tab i

Tab i

Fig.10

Cassette mechanism ass’y

Tabs k

Reel disc board

Soldering j

Tabs k

G

Motor Belt

Flyhwheel

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KS-FX901/KS-FX801

1-9

Prior to performing the following procedure, remove

the head relay board, the load arm, the sub chassis,

the cassette holder, the holder arm and the reel disc

board.

Remove the belt on the bottom of the cassette

mechanism ass’y.

Remove the slit washer attaching the flywheel on the

upper side of the cassette mechanism ass’y and pull

out the flywheel downward. Then remove another

flywheel in the same way.

1.

2.

3.

Removing the flywheel

(See Fig.10 and 12)

Prior to performing the following procedure, remove

the head relay board, the load arm, the sub chassis,

the cassette holder and the holder arm.

Disengage the part ninside of the reel driver which

engages with the shaft, using a pincette or

something like that. Then remove the reel driver from

the shaft.

Remove the reel driver spring and the reel table.

1.

2.

Removing the reel disc ass’y( )

(See Fig.12 to 14)

When reassembling, make sure to use

a new slit washer.

ATTENTION:

Fig.10

Cassette mechanism ass’y

Tab k

Reel disc board

Soldering j

Tab k

G

Motor Belt

Flyhwheel

Fig.12

Plate

The part n

Reel driver

Reel disc ass’y( )

Push aside

the gear

Tabs o

Reel disc

ass’y( )

The part n

Reel driver

Tab o

Fig.13

Reel driver

Shaft

The part n

Fig.14

Reel driver spring

Reel table

Slit washer

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KS-FX901/KS-FX801

1-10

Release the plate from the three tabs o.

Push aside the gear over the reel table using a

pincette or something like that.

Remove the reel disc ass’y ( ) as with the reel disc

ass’y ( ).

1.

2.

3.

Removing the reel disc ass’y( )

(See Fig.12 to 15)

Do not break the front panel tab fitted

to the metal cover.

ATTENTION:

Prior to performing the following

procedure, remove the reel disc ( ).

ATTENTION:

Fig.15

Push aside the gear and reattach the reel disc Ass’y( ).

Reel disc ass’y( )

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KS-FX901/KS-FX801

1-11

Adjustment method

Test instruments required for adjustment

1. Digital oscilloscope(100MHz)

2. Frequency Counter meter

3. Electric voltmeter

4. Wow & flutter meter

5. Test Tapes

VT724

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

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

For DOLBY level measurement

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

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

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

6. Torque gauge .................... Cassette type for CTG-N

(mechanism adjustment)

Measuring conditions(Amplifier section)

Power supply voltage .............. DC14.4V (10.5 - 16V)

Load impedance ........... 4 (2Speakers connection)

Line out............................................................ 20k

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 1000kHz/62dB,INT/400Hz,30%

modulation signal on receiving.

FM mono mode 97.5MHz/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)

MC-109C For TAPA CURL confirmation

(without Padd type)

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KS-FX901/KS-FX801

1-12

Head section view

Cassette mechanism

(Surface)

Arrangement of adjusting & test points

Motor assembly

Tape speed adjust

Playback head

Azimuth screw B

(Reverse)

Azimuth screw B

(Reverse)

Azimuth screw A

(Forward)

Azimuth screw A

(Forward)

Playback Head

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KS-FX901/KS-FX801

1-13

EXTKSRT002-18P

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 in-

stalling the front panel.

Cassette mechanism

to Main board

to Cassette mechanism

Front panel assembly

Main board

Extension cord

EXTKSRT002-18P

CP701

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KS-FX901/KS-FX801

1-14

Mechanism adjustment section

Item Adjusting & Confirmation Methods Adjust Std. Value

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 built-

in volume resistor .

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.

Phase

045

Built-in

volume resistor Tape Speed

2940-3090Hz

Wow&Flutter

Less than

0.35%

(JIS RMS)

Speaker out

1kHz/10kHz

: 0dB 3dB,

63Hz/1kHz

: -4dB+2dB,

1. Tape running

adjustment

2. Azimuth

adjustment

confirmation

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.

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.

2.Tape Speed and

Wow & Flutter

3.Playback

Frequency

response

Azimuth

screw A

Azimuth

screw B

HEAD

Tape guide

OK

HEAD TAPE

Tape curl NG

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KS-FX901/KS-FX801

1-15

AN80T05 (IC901) : Regulator

1.Terminal layout & Block diagram

2.Pin function

Pre

Drive

Thermal

Protection

Reference Voltage

Pre

Drive

AMP

Out

ASO & Peak

Current Protection

AMP

Out

Pre

Drive Pre

Drive

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

ILL

10V MODE2 MODE1 STB VDD

5.6V AMP VCC ANT COM

8.7V AM

8.7V FM

8.7V GND

1

2

3

4

5

6

7

8

9

10

11

12

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

No. Symbol Function

Description of major ICs

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2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

KS-FX901/KS-FX801

1-16

11

6 20

1

4

10

15

25

13

14

16

12

9

8

5

7

2

22

17

19

18

21

23

24

3

-

+

-

+

-

+

-

+

-

+

-

+

-

+

-

+

IN 1

IN 2

ST BY

Vcc 1/2 Vcc 3/4

OUT 1+

OUT 1-

PWR GND1

OUT 2+

OUT 2-

PWR GND2

R.F

IN 3

IN 4

PRE GND

ON TIME C Muting &

ON Time Control

Circuit

Protective

circuit

Protective

circuit

Mute

circuit

Ripple

Filter

Stand by

Switch

N.C

+

0.22 F

2200 F 0.022 F

0.22 F

TAB

+5V

ST ON

+

47 F

0.22 F

22 F

+

Mute 10K

+

3.3 F

OUT 3+

OUT 3-

Low Level

Mute ON

PWR GND3

OUT 4+

OUT 4-

PWR GND4

LA4743K (IC301) : Power amp.

1.Block diagram

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

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KS-FX901/KS-FX801

1-17

2.Terminal layout

3.Pin function LA4743B

TAB

GND

OUTRR-

STBY

OUTRR+

VCC1/2

OUTRF-

GND

OUTRF+

RIPPLE

INRF

INRR

SGND

INLR

INLF

ONTIME

OUTLF+

GND

OUTLF-

VCC3/4

OUTLR+

MUTE

OUTLR-

GND

NC

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

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

Non connection

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

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KS-FX901/KS-FX801

1-18

I/O

LC72366-9987 (IC701) : System CPU

Symbol FunctionPin No.

XIN

GND

J-BUS SI

J-BUS SO

J-BUS SCK

J-BUS I/O

TEL-MUTE

LCD SO

LCD SCK

LCD CE

DIMMER IN

EVOL SO

EVOL SCK

OPEN

POWER ANT

MUTE

CD ILLUM

DEMEROUT

NC

KS1

KS0

K3

K2

K1

K0

Vdd

TEST

FF/REW MODE

SEEK/STOP

MONO

RADIO/TAPE

BEEP LEVEL

PWR-CNT

ACC

KICK

I

-

I

O

I

O

-

O

I

-

O

-

O

I

-

I

-

I

O

-

O

-

Crystal oscillator input port

Connect to GND

Data input for J-BUS information

Data output for J-BUS information

Clock output for J-BUS information

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

Telephone mute signal input

Data output for LCD driver

Information clock output for LCD driver data

Chip enable output for LCD driver

None connection

Data output for electrical volume

Clock output for electrical volume information

Door open detect input

Power ant ON signal input

Mute signal input

Non connection

DIMMER control signal output

Non connection

Diode matrix output port for initial establishing

Non connection

Diode matrix output port for initial establishing

5V power supply port (+B)

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

FF/REW mode select signal output

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

Forced monaural output port, H:Turn on Forced monaural

Non connection

"H" : Turn on power

Non connection

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

1. Pin layout

2. Pin function

24 ~ 1

41 ~ 64

25

40

~

80

65

~

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

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KS-FX901/KS-FX801

1-19

I/OPort Name FunctionPin 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

MOTOR

SUBMO+

SUBMO-

BEEP

TAPE IN

STANDBY

REEL

MODE

F/R

MS

SD/ST

DETACH

ENC1

ENC2

J-BUS INT

REMOCON

FM/AM

DOLBY

NC

MEM DET

LEVELMETER

S.METER

KEY2

KEY1

KEY0

ACCDET

SENSE

AM IF COUNT

FM IF COUNT

NC

Vdd

AM OSC

FM OSC

VSS

NC

E0

TEST1

XOUT

O

-

I

O

I

-

O

-

I

-

I

-

I

-

O

-

O

Main motor output, H:Transport L: Stop

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

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

Non connection

Switch for detecting to input cassette, L: Cassette in

Switch for detecting standby position

Switch for detecting tape end position

Detecting mode position input

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

MS input port,

Station detector, Stereo signal input, H:SD

Front panel detect

Connect to encoder 1

Connect to encoder 2

Cut in signal detecting port from J-Bus information

Non connection

FM/AM mode switching signal port, H:FM L:AM

Non connection

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

Pressure voice level voltage input for level meter.

S meter voltage input

Key 2 input port

Key 1 input port

Key 0 input port

Hold port for Acc detecting, L: Hold mode

Voltage sensor port

Non connection

FM frequency detecting

Non connection

5V power supply (+B)

Non connection

FM limited signal input

Ground port for power supply

Non connection

Error signal output port for PLL

Test port for LSI, To connect ground

4.5MHz crystal oscillator output

LC72366-9987(2/2)

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

KS-FX901/KS-FX801

1-20

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

PBTC1

PBOUT1

OUTREF1

TAPEIN1

Vcc

NC

LINEOUT1

TCH1

NC

MSLPF

G2FB

G1FB

MSTC

MSOUT

NC

NRSW

MUTESW

TAPESW

DRSW

MSMODE

MSSW

NC

TCH2

LINEOUT2

Pin No. Symbol

-

O

I

-

O

-

O

-

I

-

O

Playback equalizer amplifier

capacitance

Playback equalizer amplifier

output

Output reference

TAPE input

Power supply

Line output

Time constant for the HLS

Cut-off frequency adjustment

of the music sensor LPF

Music signal interval detection

Time constant for detecting

music signal interval

Music sensor out

No use

Dolby NR control

Mute function control

Playback equalizer amplifier

control

Head select control

Music sensor mode control

Music sensor control

Time constant for the HLS

Line output

I/O Function

Pin No. Symbol

I/O Function

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

-

I

-

I

O

I

-

I

Resistance for setting the

reference

Ground

TAPE input

Output reference

Playback equalizer amplifier

output

Playback equalizer amplifier

capacitance

Playback equalizer amplifier

feedback

Playback equalizer amplifier

input

Playback equalizer amplifier

ground

Playback equalizer amplifier

input

Center

Playback equalizer amplifier

reference

Playback equalizer amplifier

input

Playback equalizer amplifier

ground

Playback equalizer amplifier

input

Playback equalizer amplifier

feedback

PBFB2

PBRIN2

PBGND

PBFIN2

VCT

PBREF

PBFIN1

PBGND

PBRIN1

PBFB1

MSMODE

DRSW

TAPESW

MUTESW

NRSW

MSOUT

MSTC

G1FB

G2FB

PBTC2

PBOUT2

OUTREF2

TAPEIN2

GND

DIREF

LINEOUT2

TCH2

NC

MSSW

PBTC1

PBOUT1

OUTREF1

TAPEIN1

Vcc

NC

LINEOUT1

TCH1

NC

MSLPF

12345678910

30 29 28 27 26 25 24 23 22 21

20

19

18

17

16

15

14

13

12

11

31

32

33

34

35

36

37

38

39

40

7k/12k

300k

F2

F1

30k

45k

300k

7k/12k

F3

OFF/B

100k

T1

-

+

-

x 1

x 1 T2

100k OFF/B

NR

BIAS

MUTE

TAPE EQ

FWD/RVS

LPF +

-DET

Vcc

MS MODE

NR MODE

MS ON/

OFF

-

+

NC

+

-

1.Pin layout & Block diagram

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

70 /12070 /120

w

.

x

i

a

o

y

u

1

6

3

.

c

o

m

Q

3

7

6

3

1

5

1

5

0

9

2

8

9

4

2

9

8

T

E

L

1

3

9

4

2

9

6

5

1

3

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

JVC KS-FX901 User manual

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