JVC KS-F525 Service Manual

SERVICE MANUAL

DISP

SCAN

LOUD

CASSETTE RECEIVER

KS-F525

KS-F525

LOUD

DISP

SCAN

Contents

Safety precaution
Disassembly method
Adjustment method
Description of major ICs

Multi
Music
Scan

1- 2
1- 3
1-12
1-15~20

Area Suffix

EE ----- Russian Federation

COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.

No.49708

Feb. 2002

KS-F525

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-F525

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-F525

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

Joints b

Bottom cover

Joint b

Rear panel

Fig.6

1-4

KS-F525

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 two 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
CP501 on the main board in the direction of the
arrow.

D

E

Rear panel

C

Fig.7

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

CP501

F

F

Top chassis

1-5

KS-F525

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 ten joints c with the front panel and the
rear cover.

3.

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

G

Front panel

G

Rear cover

Fig.10

Joints c

G

G

Joints c

Joints c

Rear cover

Front panel

Joints c

Fig.11

Control switch board

Fig.12

1-6

<Removal of the cassette mechanism>

KS-F525

Cassette mechanism ass’y

Removing the head amplifier board.

(See Fig.1 and 2)

1.

For the 6pin wire extending from connector CN402
on the head amplifier board, disconnect it from the
head relay board.

2.

Disconnect the card wire from connector CN403 on
the head amplifier board.

3.

Remove the screw A attaching the head amplifier
board.

4.

Move the tab a as shown in Fig.2 and remove the
head amplifier board while moving it in the direction
of the arrow.

Removing the cassette mechanism
assembly (See Fig.1 to 3)

1.

Disconnect the 6pin wire from connector CN402 and
the card wire from CN403 on the head amplifier
board (Refer to Fig.1 and 2).

Head relay

board

6pin
wire

CN402

A

CN403

CN402

Fig.1

CN403

Head amplifier board

Fig.2

Head amplifier board

Tab a

2.

Remove the four screws B on the bottom of the
cassette mechanism.

Head amplifier board

B

Cassette mechanism ass’y

B

Fig.3

1-7

KS-F525

Removing the head relay board

(See Fig.4)

1.

Unsolder the soldering b on the head relay board.

2.

Remove the screw C attaching the head relay board.

3.

Remove the head relay board in the direction of the
arrow while releasing the two joints c.

Removing the load arm (See Fig.5)

1.

Remove the E washer attaching the load arm using
a pincette or something like that and remove the
spring d.

2.

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.

Fig.4

Cach

Load arm

Fig.5

Head relay board

Soldering b

C

E washer

Joint c

Spring d

Removing the sub chassis (See Fig.6)

Prior to performing the following procedure, remove
the head relay board.

1.

Remove the screw D attaching the sub chassis.

2.

Push the tab e in the direction of the arrow to detach
the one side of the sub chassis. Then release the
sub chassis from the tab f.

Removing the cassette holder and the
holder arm in the eject mode

(See Fig.7 and 8)

Prior to performing the following procedure, remove
the head relay board, the load arm and the sub
chassis.

1.

Remove the screw E attaching the reinforce bracket.

2.

Remove the reinforce bracket.

Tab f

Sub chassis

Head relay

board

D

Cassette mecha chassis

Cassette holder

Fig.6

Head relay board

Tab e

Reinforce bracket

E

Reinforce
bracket

tab g

3.

Push the tab g fixing 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 h to the
side and remove the cassette holder and the holder
arm from the shaft.

1-8

Joint h

Load arm

Holder arm

Fig.7

Joint h

Removing the play head (See Fig.9)

Prior to performing the following procedure, remove
the head relay board and the sub chassis.

1.

Remove the two screws F attaching the play head
(The spring under the play head comes off at the
same time).

Shaft

Joint h

Pinch roller ass’y

Fig.8

Play head

KS-F525

Cassette holder
and holder arm

Joint h

Shaft

Pinch roller ass’y

Removing the pinch roller ass’y

(See Fig.9)

Prior to performing the following procedure, remove
the head relay board and the sub chassis.

1.

Push each tab i in the direction of the arrow and pull
out the pinch rollers on both sides.

Removing the reel disc board

(See Fig.10)

1.

Unsolder the soldering j on the reel disc board.

2.

Push the seven tabs k on the bottom of the cassette
mechanism assembly in the direction of the arrow.

Removing the motor and the sub motor

(See Fig.10 and 11)

Tab i

Tab i

Soldering j

G

Motor

F

Pinch roller ass’y

Fig.9

Reel disc board

Tabs k

Tabs k

G

Tab i

Spring

Tab i

Cassette mechanism ass’y

Flyhwheel

Belt

Fig.10

1.

Unsolder the two soldering l of the motor and the sub
motor.

2.

Release the sub motor from the three tabs m. Push
the sub motor upward and pull out it.

3.

Remove the belt on the bottom of the cassette
mechanism assembly and remove the two screws G
attaching the motor.

ATTENTION:

The motors can be detached before
removing the load arm.

Sub motor

Tab m

Load arm

Soldering j

Tab m

Soldering l

Tab m

Soldering l

Motor

Fig.11

1-9

KS-F525

Removing the flywheel

(See Fig.10 and 12)

1.

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.

2.

Remove the belt on the bottom of the cassette
mechanism ass’y.

3.

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.

ATTENTION:

When reassembling, make sure to use
a new slit washer.

Removing the reel disc ass’y( )

(See Fig.12 to 14)

Soldering j

G

Motor

Plate

Reel disc board

G

Slit washer

Tab k

Tab o

Cassette mechanism ass’y

Tab k

Belt

Fig.10

Reel driver

The part n

Tabs o

Flyhwheel

Reel disc

ass’y( )

Push aside
the gear

Prior to performing the following procedure, remove
the head relay board, the load arm, the sub chassis,
the cassette holder and the holder arm.

1.

Disengage the part n inside of the reel driver which
engages with the shaft, using a pincette or
something like that. Then remove the reel driver from
the shaft.

2.

Remove the reel driver spring and the reel table.

The part n

Slit washer

Shaft

Fig.13

The part n

Reel driver

Fig.12

Reel driver

Reel driver spring

Reel disc ass’y( )

1-10

Reel table

Fig.14

KS-F525

Removing the reel disc ass’y( )

(See Fig.12 to 15)

ATTENTION:

1.

Release the plate from the three tabs o.

2.

Push aside the gear over the reel table using a
pincette or something like that.

3.

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

ATTENTION:

Prior to performing the following
procedure, remove the reel disc ( ).

Do not break the front panel tab fitted
to the metal cover.

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

Reel disc ass’y( )

Fig.15

1-11

KS-F525

Adjustment method

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

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.

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

1-12

Azimuth screw
(Reverse side)

KS-F525

Main board

Arrangment of adjusting

Head amplifier board section (Reverse side)

VR402:Rch
(Dolby NR level adj)

R411

VR402

T11

FSMW1093A

B409

R426

C423

R425

D401

R424

IC402

C418

R417

R415

C415

B410

1

B411

R412

R414

R418

21

R413

C417

B404

CJ403

2

B407

C425

C424

R410

Q401

B406

D402

R401

R416

C419

C422

C414

B408

C416

C421

R420

Q403

B403

B413

C413

1

VR401:Rch
(Dolby NR Frequency response adj)

11

C412

1

IC401

31

C411

B405

B412

R423

B402

VR401

C410

CJ401

R408

B401

C409

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.

Extension cord
EXTKSRT002-18P

to Cassette mechanism

Cassette mechanism

Main board

EXTKSRT002-18P

to Main board

Front panel assembly

1-13

KS-F525

Item

Head

1.
azimuth
adjustment

Conditions

Test tape:
SCC-1659
VT703(10kHz)

Adjustment and Confirmation methods

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

1.
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

2.
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

3.
that line B of the mirror tape runs in the
center between Lch and Rch in the forward
play mode.

Head azimuth adjustment

Load VT724 (1kHz) and play it back in

1.
the reverse play mode.
Set the Rch output level to max.

Load VT703 (10kHz) and play it back in

2.
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

3.
output level to max, with azimuth
adjustment screw C.
(The phase difference should be 45 or
more.)

When switching between forward and

4.
reverse modes, the difference between
channels should be within 3dB. (Between
FWD L and R, REV L and R.)

S.Values Adjust

A line

Head shield

The head is at low position
during.

B line

Head shield

The head is at High position
during REV.

Output
level:
Maximum

PBHead

FWD Adj B

REV Adj C

(0 ) (45 )

HEIGHT Adj A

phase

2.

3.

1-14

Tape speed
and wow
flutter
confirmation

Play back
frequency
response
confiramation

When VT721 (315Hz) is played back,

5.
the level difference between channels
should be within 1.5dB.

Test tape: VT712
(3kHz)

Test tape: VT724
(1kHz)
VT739
(63Hz / 1kHz / 10kHz)

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

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

1.
wow flutter meter is within 3015 3045(FWD
/ REV), and less than 0.35% (JIS RMS).

In case of out of specification, adjust the

2.
motor with a built-in volume resistor.

Play test tape VT724, and set the volume

1.
position at 2V.

Play test tape VT739 and confirm.

2.
1kHz / 10kHz: -1 3dB,
1kHz / 63Hz: 0 3dB,

When 10kHz is out of specification, it will be

3.
necessary to read adjust the azimuth.

Tape speed:
3015
3045Hz
Wow
flutter: less
than 0.35%

Speaker out
1kHz / 63Hz
: 0 3db
1kHz / 10kHz
: -1 3db

Built-in volume
resistor

Description of major ICs

UPD178018AGC594(IC701) : System controller micon

1.Terminal Layout

24 – 1

25

80

KS-F525

–

40

–

65

41 – 64

2.Description

Pin

Symbol I/O Function

No.

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

Pin

Symbol I/O Function

No.

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 ST
69
70 RDSDA I RDS data input
71 REMOCON I Remocon signal input (Not used)

7

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

73 JBUS INT I J-BUS Interruption input
74 REGCPU - Connects GND through the capacitor

75 GND - To ground
76 X2 - Crystal oscillator connection for system
77 X1 - clock oscillation
78 REGOSC - Connects GND through the capacitor

79 VDD - Power supply
80 NC - Non connect

OP

RDSCK

I Stop mode input
I RDS clock input

an operation mode H:power save mode

of 0.1 F

of 0.1 F

1-15

KS-F525

BA4905-V3 (IC961) : Regulator

1.Pin layout

12 34 56 78 9101112

2.Block diagram

REGULATOR

EXT

RESET

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

RESET COMP VDD 5.7V CD 8V VCC AJ

EXT ACC AUDIO 9V CTRL ILM 10V GND

3.Pin function
Pin no. Symbol Function

1
2

RESET

EXT output

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.

3

COMP output

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

0.7V lower than VDD'S. The max output current is 100mA.
4
5

ACC

VDD output

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.

6

AUDIO output

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

7

CD output

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

This voltage supply for CD.
8
9

10

CTRL

VCC

ILM output

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.

11

AJ

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

makes ILM output voltage adjustable.

12

GND

Ground.

Overvoltage

protection circuit

37K

5K

1-16

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

KS-F525

24

23

22

21

24dB

-

+

MS MODE

+

-

F3

+

7

DET

-

24dB

8

9

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

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

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

-

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

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

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

1-17

KS-F525

HA13158A (IC941) : Power amp

1. Pin layout

1 ~ 23

2. Block diagram

2

STBY

IN1

1

14 18 6

INVCC

INPUTBUFFER1

PVCC1PVCC2

AMP1

+

3

4

-

5

IN2

IN3

IN4

11

13

23

10

MUTE

INPUTBUFFER2

INPUTBUFFER3

INPUTBUFFER4

PROTECTOR (ASO
SURGE, TSD)

12 22

LB1641 (IC402) : DC motor driver

AMP2

AMP3

AMP4

TA B

+

7

8

-

9

15

+

16

-

17

19

+

20

-

21

1. Pin layout

1-18

1 2 3 4 5 6 7 8 9

GND OUT1 P1

VZ IN1 IN2

VCC1

VCC2 P2

2. Pin function

10

OUT2

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

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LC75823W (IC651) : LCD driver

1. Pin Layout & Symbol

KS-F525

S1
S2
S3
S4
S5
S6
S7
S8

S9
S10
S11
S12
S13
S14
S15
S16

DICLCE

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

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

S17

S18

S19

OSC

S20

Vss

S21

VDD2

VDD1

S22

S23

INH

S24

VDD

S25

COM3

COM2

S26

S27

COM1

S52

S28

S29

S51

S30

S50

S31

S49

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

S32

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

2. Pin Function

Pin No.

1 to 52

53 to 55

COM1 to COM3

56

57

58

59

60
61

62

63

Symbol

S1 to S52

VDD

INH

VDD1

VDD2

Vss

OSC

CE

CL

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.

I

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.

I

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.

I/O

Oscillator connection.
An oscillator circuit is formed by connecting an external
resistor and capacitor at this pin.
Serial data CE : Chip enable
interface connection

I

to the controller. CL : Sync clock

64

DI

DI : Transfer data

1-19

KS-F525

TEA6320T-X (IC161) : E.volume

1.Pin layout

2.Block diagram

10 8 9 7 6

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.

1-20

< MEMO >

KS-F525

1-21

KS-F525

VICTOR COMPANY OF JAPAN, LIMITED

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

(No.49708)

200202