Jvc Ks-f525 User manual

SERVICE MANUAL

CASSETTE RECEIVER

No.49708

Feb. 2002

KS-F525

Area Suffix

EE ----- Russian Federation

DISP

SCAN

LOUD

Multi

Music

Scan

Contents

Safety precaution

Disassembly method

Adjustment method

Description of major ICs

1- 2

1- 3

1-12

1-15~20

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KS-F525

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-F525

1-3

Press the eject button in the lower right part of the

front panel. Remove the front panel assembly from

the body.

1.

Removing the front panel assembly

(See Fig.1)

Prior to performing the following procedure, remove

the front panel assembly.

Release the four joint tabs aon both sides of the

front chassis assembly and remove the front chassis

assembly toward the front.

1.

Removing the front chassis assembly

(See Fig.2 and 3)

Disassembly method

Fig.1

Fig.2

Fig.3

Front panel assembly

Eject button

Tab a

Front chassis assembly

Front chassis

assembly

Heat sink Tab a

Tab a

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KS-F525

1-4

Remove the three screws Aon the left side of the

body.

1.

Removing the heat sink (See Fig.4)

Prior to performing the following procedure, remove

the front panel assembly, the front chassis assembly

and the heat sink.

Turn over the body and unjoint the five joints bwith

the bottom cover and the body using a screwdriver.

1.

Removing the bottom cover

(See Fig.5 and 6)

Fig.4

Fig.5

Fig.6

Heat sink

AA

Joints b

Joint b

Joints b

Joint b

Bottom cover

Rear panel

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KS-F525

1-5

Prior to performing the following procedure, remove

the front panel assembly, the front chassis assembly,

the heat sink and the bottom cover.

Remove the screw B, the two screws C and the two

screws Dattaching the rear bracket on the back of

the body. Remove the rear panel.

Remove the two screws Eattaching the main board

on the bottom of the body. Disconnect connector

CP501 on the main board in the direction of the

arrow.

1.

2.

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, the bottom cover and the main board.

Remove the four screws Fattaching the cassette

mechanism section on the back of the top chassis.

1.

Removing the cassette mechanism section

(See Fig.9)

Fig.7

Fig.8

Fig.9

Rear panel

B

D

C

Main board

E

CP501

Cassette mechanism section

F

Top chassis

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KS-F525

1-6

Prior to performing the following procedure, remove

the front panel assembly.

Remove the four screws Gattaching the rear cover

on the back of the front panel assembly.

Unjoint the ten joints cwith the front panel and the

rear cover.

Remove the control switch board on the back of the

front panel.

1.

2.

3.

Removing the control switch board

(See Fig.10 to 12)

Fig.10

Fig.11

Fig.12

G

GG

G

Rear cover

Joints c

Front panel

Rear cover

Front panel

Control switch board

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KS-F525

1-7

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-F525

1-8

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-F525

1-9

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-F525

1-10

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-F525

1-11

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-F525

1-12

Adjustment method

1.Digital osclloscope(100MHz)

Measuring conditions(Amplifier section)

Power supply voltage

Load impedance

Line out

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).

for DOLBY level measurement

For playback frequency measurement

For wow flutter & tape speed measurement

For head azimuth measurement

Cassette type for CTG-N

(mechanism adjustment)

DC14.4V(10.5~16V)

4 (2Speakers connection)

20k

Frequency Range

FM1/FM2 : 87.5 MHz to 108.0 MHz

FM3 : 65 MHz to 74 Hz

AM : (MW) 522 kHz to 1620 kHz

(LW) 144 kHz to 279 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.

Arrangement of Adjusting

Cassette Mechanism Section

Azimuth screw

(Forward side)

Azimuth screw

(Reverse side)

Playback head

Tape speed adjust

Capstan motor

Cassette mechanism

(Surface)

Test Instruments reqired for adjustment

2.Frequency Counter meter

3.Electric voltmeter

4.Wow & flutter meter

5.Test Tapes

VT724

VT739

VT712

VT703

6.Torque gauge

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KS-F525

1-13

VR402:Rch

(Dolby NR level adj)

VR401:Rch

(Dolby NR Frequency response adj)

Arrangment of adjusting

Head amplifier board section (Reverse side)

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 boardassembly.

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

Front panel assembly

EXTKSRT002-18P

Extension cord

Main board

EXTKSRT002-18P

to Main board

to Cassette mechanism

C401

C402

C403

C404

C405

C406

C407

C408

C409

C410

C411

C412

C413 C414 C416

C417

C418

C419

C421

C422

C423

C424

C425

CJ401

B405

B403

D401

D402

IC402

Q401

Q402

Q403

R401

R402

R403

R404

R405

R406

R407

R408

R410

R411

R412

R413

R414

R415

R416

R417

R418

R420

B413

R422

R423

R424

R425

R426

VR401

VR402

IC401

CJ403

B412

B407

B401

B408

B410

B406

B409 B404

C415

B402

B411

2

1

2

1

11

21

31

1

FSMW1093A

1

T11

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KS-F525

1-14

Item Conditions Adjustment and Confirmation methods S.Values Adjust

Head

azimuth

adjustment

Head height adjustment

Adjust the azimuth directly. When you

adjust the height using a mirror tape,

remove the cassette housing from the

mechanism chassis. After installing the

cassette housing, perform the azimuth

adjustment.

Load the SCC-1659 mirror tape. Adjust with

height adjustment screw A and azimuth

adjustment screw B so that line A of the

mirror tape runs in the center between Lch

and Rch in the reverse play mode.

After switching from REV to FWD then to

REV, check that the head position set in

procedure 1 is not changed. (If the position

has shifted, adjust again and check.)

Adjust with azimuth adjustment screw B so

that line B of the mirror tape runs in the

center between Lch and Rch in the forward

play mode.

Test tape:

SCC-1659

VT703(10kHz)

Test tape: VT712

(3kHz)

Test tape: VT724

(1kHz)

VT739

(63Hz / 1kHz / 10kHz)

1.

Tape speed

and wow

flutter

confirmation

2.

Play back

frequency

response

confiramation

3.

1.

2.

3.

Check to see if the reading of the F, counter /

wow flutter meter is within 3015 3045(FWD

/ REV), and less than 0.35% (JIS RMS).

In case of out of specification, adjust the

motor with a built-in volume resistor.

1.

2.

Play test tape VT724, and set the volume

position at 2V.

Play test tape VT739 and confirm.

1kHz / 10kHz: -1 3dB,

1kHz / 63Hz: 0 3dB,

When 10kHz is out of specification, it will be

necessary to read adjust the azimuth.

1.

2.

3.

Load VT724 (1kHz) and play it back in

the reverse play mode.

Set the Rch output level to max.

Load VT703 (10kHz) and play it back in

the forward play mode. Adjust the Rch

and Lch output levels to max, with

azimuth adjustment screw B. In this case,

the phase difference should be within 45 .

Engage the reverse mode and adjust the

output level to max, with azimuth

adjustment screw C.

(The phase difference should be 45 or

more.)

When switching between forward and

reverse modes, the difference between

channels should be within 3dB. (Between

FWD L and R, REV L and R.)

When VT721 (315Hz) is played back,

the level difference between channels

should be within 1.5dB.

1.

2.

3.

4.

5.

Head azimuth adjustment

Tape speed:

3015

3045Hz

Wow

flutter: less

than 0.35%

Speaker out

1kHz / 63Hz

: 0 3db

1kHz / 10kHz

: -1 3db

Built-in volume

resistor

The tuner section is of an adjustment-freedesign. In case the tuner is in trouble, replace the tuner pack.

A line

B line

Head shield

PBHead

FWD Adj B

REV Adj C HEIGHT Adj A

phase

(0 ) (45 )

Head shield

The head is at low position

during.

The head is at High position

during REV.

Output

level:

Maximum

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TEL 13942296513 QQ 376315150 892498299

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KS-F525

1-15

Description of major ICs

UPD178018AGC594(IC701) : System controller micon

24 –1

41 –64

25

40

80

65

1.Terminal Layout

2.Description

–

1 KEY0 I Key input 0

2 KEY1 I Key input 1

3 KEY2 I Key input 2

4 LEVEL I Level meter input

5 SM I Signal meter input

6 SQ I Signal quality input

7 LCDCE O Chip enable output to LCD driver

8 LCDDA O Data output to LCD driver

9 LCDSCK O Clock output to LCD driver

10 BUSI/O O J-BUS I/O switch output

11 UNLOCK O PLL unlock output L:unlock H:lock

12 BUSSI I J-BUS data input

13 BUSSO O J-BUS data output

14 BUSSCK O J-BUS clock output

15 - 20 NC - Non connect

21 GNDPORT - GND for port

22 VDDPORT - VDD for port

23 NC - Non connect

24 AFCK O AF check output L:AF check

25 MONO O Monaural ON/OFF output H:Monaural ON

26 FM O Output for FM power supply H:FM Mode

27 SEEK/STOP O Auto seek/Stop output H:Aut seek L:Stop

28 NC I Non connect

29 IFC I FM middle frequency counter input

30 VDDPLL - VDD for PLL

31 OSC I FM/AM oscillation input

32 NC - Non connect

33 GNDPLL - GND for PLL

34 AMEO O AM error out output

35 FMEO O FM error out output

36 IC - Connect to Ground

37 SD/ST I Seek/Stop port H:SD input

Seek/Stop port L:Stereo input

38 STAGE I H:It is CD mode and there is REPEAT

L:Does not exist

39 NC - Non connect

40 MOTOR O Main motor output H:At rotation

41 FF/REW O MS IC sensitivity switch output L:FF/REW

42 F/R O FWD/REV change input H:FWD L:REV

43 DOLBY O Dolby NR output H:Dolby NR ON

44 MS IN I Between tunes signal input

H:Between tunes

45 I2CSCK I/O E-VOL IC control clock I/O

46 I2CDAO O E-VOL IC control data output

47 I2CDAI I E-VOL IC control data input

48 REEL I Reel rotation detect signal input

49 SUBMO- O Sub motor output -

50 SUBMO+ O Sub motor output +

51 MODE I Mode position detection input H:Non-mode

L:Mode position

52 TAPEIN I Cassette in detect input H:IN L:OUT

53 STBY I Standby detect input H:Eject side

L:Operation side

54-59 NC - Non connect

60 MUTE 2 O L:Mute ON H:Mute OFF

61 POWER O Power supply output H:power ON

62 TEL-MUTE I TEL-MUTE input

63, 64 NC - Non connect

65 ENC1 I Encoder signal input

66 ENC2 I Encoder signal input

67 ON I H:Operation mode L:Power save mode

68 STOP I Stop mode input

69 RDSCK I RDS clock input

70 RDSDA I RDS data input

71 REMOCON I Remocon signal input (Not used)

72 DETACH I Detach input It is "L" of 200ms or more and

an operation mode H:power save mode

73 JBUS INT I J-BUS Interruption input

74 REGCPU - Connects GND through the capacitor

of 0.1 F

75 GND - To ground

76 X2 - Crystal oscillator connection for system

77 X1 - clock oscillation

78 REGOSC - Connects GND through the capacitor

of 0.1 F

79 VDD - Power supply

80 NC - Non connect

Pin Symbol I/O Function

No. Pin Symbol I/O Function

No.

w

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x

i

a

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1

6

3

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c

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3

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TEL 13942296513 QQ 376315150 892498299

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KS-F525

1-16

12 34 56 78 9101112

BA4905-V3 (IC961) : Regulator

1.Pin layout

2.Block diagram

EXT

EXT ACC AUDIO 9V CTRL ILM 10V GND

RESET

RESET COMP VDD 5.7V CD 8V VCC AJ

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

37K

5K

REGULATOR

Overvoltage

protection circuit

Pin no. Symbol Function

RESET

EXT output

COMP output

ACC

VDD output

AUDIO output

CD output

CTRL

VCC

ILM output

AJ

GND

1

2

3

4

5

6

7

8

9

10

11

12

If VDD voltage becomes 4V or less.RESET output becomes low level.

This output voltage is approximately 0.5V lower than VCC. and max

output current is 300mA.

A voltage supply for ACC block. This output voltage is approximately

0.7V lower than VDD'S. The max output current is 100mA.

Control of the COMP output by inputting voltage.

This output voltage is 5.7V, and max output current is 100mA.

This voltage supply is for microcomputer. Whenever back up voltage

supply is connected, the output keeps on running.

This output voltage is 9.0v, and max output current is 500mA.

This voltage supply for AUDIO.

This output voltage is 8.0V, and max output current is 1A.

This voltage supply for CD.

Output selector of CD. AUDIO, ILM and EXT.

To be connected with the BACK UP of car.

This output voltage is 10V, and max output current is 500mA.

Output voltage is adjustable.

Putting a resistance between ILM and AJ or between AJ and GND

makes ILM output voltage adjustable.

Ground.

3.Pin function

w

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x

i

a

o

y

u

1

6

3

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c

o

m

Q

3

7

6

3

1

5

1

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0

9

2

8

9

4

2

9

8

T

E

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1

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4

2

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6

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1

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9

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Q

TEL 13942296513 QQ 376315150 892498299

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KS-F525

1-17

1.Pin layout 2.Blockdiagram

1

10

30

21

CXA2559Q(IC401):Playback equalizer amplifier with music sensor

31

32

33

34

35

36

37

38

39

40

20

19

18

17

16

15

14

13

12

11

1

2

3

4

5

6

7

8

9

10

30

29

28

27

26

25

24

23

22

21

+

-

+

-

+

-

+

-

+

-

7k/12k

300k

100k

24dB

MS MODE

BIAS

MUTE

TAPE EQ

FWD/RVS

LPF

DET

24dB

T2

X1

F2

30k

45k

F1

300k T1

F3

Vcc

MS ON/

OFF

3.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

Symbol

PBTC1

PBOUT1

OUTREF1

TAPEIN1

Vcc

NC

LINEOUT1

NC

MSLPF

G2FB

GI1FB

MSTC

MSOUT

NC

MUTESW

TAPESW

DRSW

MSMODE

MSSW

NC

LINEOUT2

DIREF

GND

TAPEIN2

OUTREF2

PBOUT2

PBTC2

PBFB2

PNRIN2

PBGND

PBFIN2

VCT

PBREF

PBFIN1

PBGND

PBRIN1

PBFB1

I/O

-

O

I

-

O

-

O

-

I

-

O

-

I

O

-

I

-

I

O

I

-

I

Function

Terminal of capacity of reproduction equalizer reproduction

Equalizer output terminal

Output standard terminal

Tape input terminal

Power supply terminal

Non connection

Line-out output terminal

Non connection

Detection LPF terminal between tunes

Detection level set terminal between tunes

Time constant connection terminal for the detection between tunes

Detection output terminal between tunes

Non connection

Mute function control terminal

Reproduction equalizer control terminal

Head change control terminal

Detection mode control terminal between tunes

Detection function control terminal between tunes

Non connection

Line-out output terminal

Resistance connection terminal for standard current setting

Earth terminal

Tape input terminal

Output standard terminal

Reproduction equalizer output terminal

Terminal of capacity of reproduction equalizer

Reproduction equalizer return terminal

Reproduction equalizer input terminal

Reproduction equalizer system earth terminal

Reproduction equalizer input terminal

Middle point terminal

Reproduction equalizer standard terminal

Reproduction equalizer input terminal

Reproduction equalizer system earth terminal

Reproduction equalizer input terminal

Reproduction equalizer return terminal

w

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x

i

a

o

y

u

1

6

3

.

c

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Q

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6

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1

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1

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0

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2

8

9

4

2

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8

T

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4

2

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Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

KS-F525

1-18

HA13158A (IC941) : Power amp

1. Pin layout

2. Block diagram

IN1

IN2

IN3

IN4

STBY

2

1

11

13

23

10

TAB

PROTECTOR (ASO

SURGE, TSD)

INPUTBUFFER1

INPUTBUFFER2

INPUTBUFFER3

INPUTBUFFER4

AMP1

AMP2

AMP3

AMP4

MUTE

PVCC1PVCC2

INVCC

+

-

+

-

+

-

+

-

12 22

14 18 6

3

4

5

7

8

9

15

16

17

19

20

21

1 ~ 23

1 2 3 4 5 6 7 8 9 10

GND OUT1 P1 VZ IN1 IN2 VCC1 VCC2 P2 OUT2

Input Output Mode

IN1 IN2 OUT1 OUT2

Brake

0 0 0 0

1 0 1 0

0 1 0 1

1 1 0 0

CLOCKWISE

COUNTER-CLOCKWISE

Brake

LB1641 (IC402) : DC motor driver

1. Pin layout 2. Pin function

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

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Q

TEL 13942296513 QQ 376315150 892498299

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KS-F525

1-19

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

S1

S2

S3

S4

S5

S6

S7

S8

S9

S10

S11

S12

S13

S14

S15

S16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

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

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

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

S28

S29

S30

S31

S32

DI

CL

CE

OSC

Vss

VDD2

VDD1

INH

VDD

COM3

COM2

COM1

S52

S51

S50

S49

LC75823W (IC651) : LCD driver

1. Pin Layout & Symbol

2. Pin Function

Pin No.

1 to 52

53 to 55

56

57

58

59

60

61

62

63

64

I/O

O

--

I

--

I/O

I

Segment output pins used to display data transferred

by serial data input.

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.

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.

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. Connect to GND.

Oscillator connection.

An oscillator circuit is formed by connecting an external

resistor and capacitor at this pin.

Serial data CE : Chip enable

interface connection

to the controller. CL : Sync clock

DI : Transfer data

Symbol

S1 to S52

COM1 to COM3

VDD

INH

VDD1

VDD2

Vss

OSC

CE

CL

DI

Function

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

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1

3

9

2

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4

2

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Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

KS-F525

1-20

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

SDA

GND

OUTLR

OUTLF

TL

B2L

B1L

IVL

ILL

QSL

IDL

MUTE

ICL

IMD

IBL

IAL

SCL

VCC

OUTRR

OUTRF

TR

B2R

B1R

IVR

ILR

QSR

IDR

Vref

ICR

CAP

IBR

IAR

CD-CH

TAPE

TUNER

POWER

SUPPLY

SOURCE

SELECTOR

VOLUME 1

+20 to -31 dB

LOUDNESS

LEFT

BASS

LEFT

+15 dB

TREBLE

LEFT

+12 dB

BASS

RIGHT

+15 dB

TREBLE

RIGHT

+12 dB

MUTE

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

VOLUME 1

+20 to -31 dB

LOUDNESS

RIGHT

LOGIC

21

31

2

19

16

15

13

11

22

20

18

17

14

23 25 24 26 27 28

30

29

1

32

3

4

10 8 9 7 6 512

1.Pin layout

3.Pin functions

2.Block diagram

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

No. Pin

No.

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

SDA

GND

OUTLR

OUTLF

TL

B2L

B1L

IVL

ILL

QSL

IDL

MUTE

ICL

IMO

IBL

IAL

Serial data input/output.

Ground.

output left rear.

output left front.

Treble control capacitor left channel or

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.

Input loudness. left control part.

Output source selector. left channel.

Not used

Input C left source.

Not used

Input B left source.

Input A left source.

I/O

-

O

I

-

I

O

-

I

-

I

Symbol I/O Symbol I/O

Input A right source.

Input B right source.

Electronic filtering for supply.

Input C right source.

Reference voltage (0.5Vcc)

Not used

Output source selector right channel.

Input loudness right channel.

Input volume 1. right control part.

Bass control capacitor right channel

Bass control capacitor right channel or

output to an external equalizer.

Treble control capacitor right channel or

input from an external equalizer.

Output right front.

Output right rear.

Supply voltage.

Serial clock input.

I

-

I

-

O

I

-

O

I

O

-

I

IAR

IBR

CAP

ICR

Vref

IDR

QSR

ILR

IVR

B1R

B2R

TR

OUTRF

OUTRR

Vcc

SCL

Functions Functions

TEA6320T-X (IC161) : E.volume

w

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x

i

a

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y

u

1

6

3

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c

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8

T

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2

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1

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0

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1

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1

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Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

JVC KS-F525 User manual

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