JVC KD-SX777 Service Manual

SERVICE MANUAL

CD RECEIVER

KD-SX777

KD-SX777

KD-SX777

Contents

Safety precaution------------------------------------- 1-2

Preventing static electricity
Disassembly method
Adjustment method

-------------------------

-------------------------------

--------------------------------

1-3
1-4

1-9

Area Suffix

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

UR Brazil

Flow of functional operation unit TOC read----

Maintenance of laser pickup----------------------- 1-12
Replacement of laser pickup ---------------------- 1-12
Description of major ICs ---------------------------- 1-13

1-10

COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.

No.49636

APR. 2001

KD-SX777

Safety precaution

CAUTION

!

CAUTION

!

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.

Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.

1-2

KD-SX777

Preventing static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

1.1. Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Be careful to use proper grounding in the area where repairs are being performed.

1.1.1. Ground the workbench

1. Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over
it before placing the traverse unit (optical pickup) on it.

1.1.2. Ground yourself

1. Use an anti-static wrist strap to release any static electricity built up in your body.

(caption)
Anti-static wrist strap

Conductive material
(conductive sheet) or iron plate

1.1.3. Handling the optical pickup

1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)

2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power
source can easily destroy the laser diode.

1.2. Handling the traverse unit (optical pickup)

1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.

2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific
details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse
unit. Be careful not to take too long a time when attaching it to the connector.

3. Handle the flexible cable carefully as it may break when subjected to strong force.

4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it

Shorted part

1-3

KD-SX777

Disassembly method

Removing the front chassis (See Fig.1)

1. Remove two screws A and insert a screwdriver to the
joints a on the side of the front chassis and two joints b
on the right side, then detach the front chassis toward the
front side.

Removing the heat sink (See Fig.2 )

1. Remove the three screws B attaching the heat sink on
the left side of the body, and remove the heat sink.

A

a

a

Front chassis

Fig.1

B

A

b

b

B

Removing the bottom cover (See Fig.3 )

1.2.Turn the body upside down.
Insert a screwdriver to the two joints c and two joints d on

both sides of the body and the joint e on the back of the
body, then detach the bottom cover from the body.

B

Heat sink

Fig.2

c

Regulator board

e

Fig. 3

d

1-4

KD-SX777

Removing the main amplifier board assembly

(See Fig.4 and 5)

1.

Remove the front chassis.

2.

Remove the bottom cover.

3.

Remove the two screws C attaching the main amplifier
board assembly on the bottom of the body.

4.

Remove the three screws D attaching the main amplifier
board assembly on the back of the body.

Disconnect connector CN501 on the main amplifier board

5.
assembly from the CD mechanism assembly.

Main amplifier board

C

D

CN501

C

Fig.4

D

Fig. 5

Removing the CD mechanism assembly

(See

Fig.6 )

Remove the front chassis.

1.
Remove the bottom cover.

2.
Remove the main amplifier board assembly.

3.
Remove the three screws E attaching the CD mechanism

4.
assembly from the top cover.

Removing the control switch board

(See

Fig.7 and 8 )

1.

Remove the front chassis.

2.

Remove the four screws F attaching the rear cover on the
back of the front panel unit.

Remove the control switch board from the front panel

3.
unit.

CD mechanism assembly

Top cover

E

F

F

Control switch board

Fig. 6

Fig. 7

E

E

F

F

Fig. 8

1-5

KD-SX777

Removing the CD mechanism control
board(See Fig.1 and 2)

Unsolder the part f and g on the CD mechanism
control board.

Remove the stator fixing the CD mechanism control
board and the damper bracket (To remove the stator
smoothly, pick up the center part).

Remove the screw F attaching the CD mechanism
control board.

Remove the CD mechanism control board in the
direction of the arrow while releasing it from the two
damper bracket slots i and the front bracket slot j.

Disconnect the flexible wire from connector on the
pickup unit.

ATTENTION:

Turn the FD gear in the direction of the
arrow to move the entire pickup unit to
the appropriate position where the
flexible wire of the CD mechanism unit
can be disconnected easily (Refer to
Fig.2).

CD mechanism ass’y

m

Front bracket

Damper bracket

I

g

F

Fig.1

Pickup unit

I

j

Flexible wire

f

m

h

I

i

CD mechanism
control board

Shift the lock

FD gear

k

G

Loading motor

Pull outward

Fig.2

CD mechanism control board

Front bracket

Fig.3

Front bracket

k

G

Pull outward

1-6

Flame

Fig.4

KD-SX777

Removing the loading motor

(See Fig.3 to 5)

Prior to performing the following procedure, remove
the CD mechanism control board.

1.

Remove the two springs k attaching the CD mechanism
ass’y and the front bracket.

2.

Remove the two screws G and the front bracket
while pulling the flame outward.

3.

Remove the belt and the screw H from the loading
motor.

Removing the CD mechanism ass’y

(See Fig.1, 6 to 9)

CD mechanism ass’y

I

Flame

Loading motor

m

H

Belt

Fig.5

Damper bracket

m

I

Fig.6

I

I

Prior to performing the following procedure, remove
the CD mechanism control PWB and the front
bracket (loading motor).

1.

Remove the three screws I and the damper bracket.

2.

Raise the both sides fix arms and move the fix plates
in the direction of the arrow to place the four shafts l
as shown in Fig.8 and 9.

3.

Remove the CD mechanism ass’y and the two
springs m attaching the flame.

4.

Remove the two screws J and both sides rear
damper brackets from the dampers. Detach the CD
mechanism ass’y from the left side to the right side.

ATTENTION:

The CD mechanism ass’y can be
removed if only the rear damper
bracket on the left side is removed.

Fix plate (L)

l

Fix arm (R)

Fig.7

Rear damper bracket

l

Fig.8

Rear damper bracket

J

Fix plate(R)

J

Fix arm (L)

Damper

Damper

l

l

Fig.9

1-7

KD-SX777

Removing the feed motor ass’y

(See Fig.10)

Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor) and the CD mechanism ass’y.

1.

Remove the two screws K and the feed motor ass’y.

Removing the pickup unit

(See Fig.10 and 11)

*Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor), the CD mechanism ass’y and the
feed motor ass’y.

1.

Detach the FD gear part of the pickup unit upward.
Then remove the pickup unit while pulling out the
part n of the FD screw.

Feed motor ass’y

K

FD gear

Nut push spring plate

FD screw

Pickup unit

Fig.10

Part n

Part O

Pickup unit

L

Pickup mount nut

Pickup unit

ATTENTION:

2.

Remove the screw L attaching the nut push spring
plate and the pickup mount nut from the pickup unit.
Pull out the FD screw.

When reattaching the pickuap unit,
reattach the part o of the pickup unit,
then the part n of the FD screw.

Removing the spindle motor

(See Fig.12 and 13)

Prior to performing the following procedure, remove
the CD mechanism control board, the front bracket
(loading motor), the CD mechanism ass’y and the
feed motor ass’y.

1.

Turn up the CD mechanism ass’y and remove the
two springs p on both sides of the clamper arms.
Open the clamper arm upward.

2.

Turn the turn table, and remove the two screws M
and the spindle motor.

FD screw

p

Spindle motor

Fig.11

p

Fig.12

M

1-8

M

Fig.13

Adjustment method

KD-SX777

Test instruments required adjustment

1.Digital oscilloscope (100MHz)

2.AM Standard signal generator

3.FM Standard signal generator

4.Stereo modulator

5.Electric voltmeter

6.Digital tester

7.Tracking offset meter

8.Test Disc JVC : CTS-1000

9.Extension cable for check
EXTGS004-26P

Standard measuring conditions
Power supply voltage DC14.4V(10.5
Load impedance 4 (4 to 8 allowance)
Line-out Level/Impedance
KD-SX770 : 2.0 V/20k load(full scale)
Output impedance : 1k

Standard volume position
Balance and Bass & Treble volume : Indication "0"
BBE : OFF

Frequency Band
FM
AM

Dummy load
Exclusive dummy load should be used for AM,and FM.
For 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.

–

16V)

1 – 3 87.5MHz – 107.9MHz
530kHz – 1710kHz

How to connect the extension cable for adjusting

CN701

CN501

EXTGS004-26P

1-9

KD-SX777

Flow of functional operation unit TOC read

Power ON

When the pickup correctly moves
to the inner area of the disc

Set Function CD

When the laser diode correctly

emits

Microprocessor
commands

FMO
TC9462"53"

FEED MOTOR
+TERMINAL
IC581"6"

REST SW

When correctly focused

FEO
TA2109

14

Focus Servo Loop ON

$83

$82

$81

5V
Hi-Z
0V

6V
4V
2V

OFF
ON

Pickup feed to the inner area

2.2V

RF signal eye-pattern
remains closed

RF signal eye-pattern
opens

Disc inserted

YES

Laser emitted

Focus search

Disc rotates

Tracking loop closed

TOC readout

YES

Microprocessor
commands

SEL
TC9462

LD
CN501

57

1

"No disc"
display

When the disc correctly rotates

Microprocessor
commands

DMO
TC9462

Spindle
motor(-)
IC581"5"

$84 $86 $ A200

55

Acceleration Servo CLV

Rough
Servo

0.5 Sec 0.5 Sec

$84

5V
0V

4V
0V

5V

2.2V
0V

6V

3.2
2V

1-10

Jump to the first track

Play

Tracking Servo Loop ON

RF signal

Rough Servo Mode

CLV Servo Mode
(Program Area)

CLV Servo Mode
(Lead-In Area;
Digital: 0)

Feed section

Is the voltage output at
IC541 pin "53" 5V or 0V?

YES

Is 4V present at both
sides of the feed motor?

YES

NO YES NO

NO

Is the wiring for IC521

(90)~(100) correct?

NO

Is 6V or 2V present at

IC581 "6" and "7"?

NO

Is 5V present at IC581

pin "20"?

Check the vicinity of

IC521.

YES

Check the feed motor

connection wiring.

YES

Check CD 9V

KD-SX777

and 5V.

Check the feed motor.

Focus section

When the lens is

moving:

Does the S-search

waveform appear at

IC581 pins "8" and "9"?

Spindle section

Is the disk rotated?

YES

Does the RF signal

appear at RF(TP1)?

YES

Is the RF waveform at

RF(TP1)distor

Proceed to the Tracking

section

ted?

YES

4V

Check IC581.

NO

YES

NO

NO

NO

Check the circuits in
the vicinity of IC581
pins "8","9"and"15".

Check the pickup and

its connections.

Is 4V present at IC581

pins "4" and "5"?

Check the spindle motor

and its wiring

Check the circuits in the

vicinity of IC501 "19"~

"24" or the pickup

YES

YES

NO

Is 4V present at IC521

pins "55" ?

Check the vicinity of

IC581.

NO

YES

Check IC501 and

IC521.

Tracking section

When the disc is rotated

at first:

Is the tracking error signal

output at IC501 "12"?

Check IC521.

Approx. 1.2V

YES

YES YES

Check the circuit in the

vicinity of IC501 pins

"2"~"12".

Check the pickup and

its connections.

1-11

KD-SX777

Maintenance of laser pickup

(1) Cleaning the pick up lens
Before you replace the pick up,please try to
clean the lens with a alcohol soaked cotton
swab.

(2) Life of the laser diode
When the life of the laser diode has expired,
the following symptoms will appear.
(1) The level of RF output (EFM output:ampli
tude of eye pattern) will be low.

Is RF output

1.3 0.4Vp-p?

YES

O.K

(3) Semi-fixed resistor on the APC PC board
The semi-fixed resistor on the APC printed
circuit board which is attached to the pickup
is used to adjust the laser power. Since this
adjustment should be performed to match the
characteristics of the whole optical block,
do not touch the semi-fixed resistor.
If the laser power is lower than the specified
value, the laser diode is almost worn out, and
the laser pickup should be replaced.
If the semi-fixed resistor is adjusted while
the pickup is functioning normally, the laser
pickup may be damaged due to excessive current.

NO

Replace it.

Replacement of laser pickup

Turn off the power switch and,disconnect the
power cord.

Replace the pickup with a normal one.(Refer
to "Pickup Removal" on the previous page)

Plug the power cord in, and turn the power on.
At this time, check that the laser emits for
about 3seconds and the objective lens moves
up and down.
Note: Do not observe the laser beam directly.

1-12

Play a disc.

Check the eye-pattern at RF(TP1).

Finish.

+

­+

-

-

+

+

-

-

-

+

+

Description of major ICs

BA3220FV-X(IC341/IC441) : Line Out Amp

KD-SX777

CL-

14

LGND

13

14

3220

17

OUTL OUTR RGND

1112

8

CR-

10

9

CR+

8

REFR

1

2

Vcc

3

INL

4

NFLCL+

REFR

FILTER

56

FIL

NFR

7

INR

1-13

KD-SX777

UPD178078GF-543 (IC701): SYSTEM CPU

1.Terminal layout

2.Block diagram

TO0/VTR-CONT

TI00/POWER

TI01/CD-ON

TI50/MUTE

TO50/NC

TI51/STAGE

TO51/NC

SI0/SB0/SDA0/NC

SO0/SB1/SDA1/VOL-DA

SCK0/SCL/VOL-CLK

SI1/JBUS-SI

SO1/JBUS-SO

SCK1/JBUS-SCK

STB/NC

BUSY/NC

SI3/NC

SO3/LCD-DA

SCK3/SCL/LCD-CLK

TXD0/LM1

RXD0/LM0

INTP0/NC
INTP7/NC

BEEP0/BUZZER

BUZ/NC

RESET

X1
X2

V

DD

PORT

GNDPORT

V

DD

VM45/VTR-LOGIC

REGOSC

REGCPU

GND0
GND1

16-bit TIMER/
EVENT COUNTER

8-bit TIMER/
EVENT COUNTER 0

8-bit TIMER/
EVENT COUNTER 1

WATCHDOG TIMER

BASIC TIMER

SERIAL
INTERFACE 0

SERIAL
INTERFACE 1

SERIAL
INTERFACE 3

UART0

8

INTERRUPT
CONTROL

BUZER OUTPUT

SYSTEM
CONTROL

VOLT AGE
REGULATOR

1

~

30

100 ~ 81

31 ~ 50

80

~

51

78k/0
CPU
CPRE

ROM

PD178078
:3Kbyte
PD178076
:2Kbyte

RESET
CPU
PERIPHERAL

OSC

V
V

CPU

ROM

PD178078
:60Kbyte
PD178076
:48Kbyte

PORT 0

PORT 1

PORT 2

PORT 3

PORT 4

PORT 5

PORT 6

PORT 7

PORT10

PORT 12

PORT 13

A/D
CONVERTER

FREQUENCY
COUNTER

PLL

PLL
VOLT AGE
REGULATOR

NC,JBUS-INT,SW1,

8

REMOCON,PS1,PS2,
DETACH,NC

KEY0,KEY1,KEY2,LEVEL,

8

SM,Add:"OPEN",NC,

JBUS-SI,JBUS-SO,

8

JBUS-SCK,NC,VOL-DA,
VOL-CLK

VTR-LOGIC,VTR-CONT,

8

POWER,CD-ON,MUTE,
BUZZER,NC

8

NC,Add:"Dimmer"

NC,LCD-CE,SW2,SW3,

8

SW4,RST-SW,ENC1,ENC2
MONO,SEEK/STOP,

FM/AM,Add:DIMIN,

8

ANTENNA,TEL,
STAGE1,STAGE2

NC,LCD-DA,LCD-CLK,

8

JBUS-/O,LM0,LM1,BUCK,
CCE

3

SD/ST,NC,IFC

5

BUS0,BUS1,BUS2,BUS3,
RST

8

NC

AN10/KEY0

8

AN17/NC

DD

AV
AV

SS

AMIFC/NC
FMIFC/IFC

EO0
EO1

VCOL
VCOH

DD

PLL

V
GNDPLL

TELMUTING

1-14

IC
GND2

KD-SX777

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
41
42
43
44
45
46
47
48
49
50

NC
JBUS-INT
JBUS-SI
JBUS-SO
JBUS-SCK
NC
NC
NC
VOL-DA
VOL-CLK
NC
LCD-DA
LCD-CLK
JBUS-I/O
NC
LCD-CE
SW2
SW3
SW4
RST-SW
ENC1
ENC2
KEY0
KEY1
KEY2
LEVEL
AVDD
SM
OPEN
NC
NC
AVSS
REGCPU
VDD
REGOSC
X2
X1
GND0
SD/ST
GND2
NC
IFC
VDDPLL
OSC-INPUT
NC
GNDPLL
AME0
FME0
ICVPP
RESET

UPD178078GF(1/2)

I/OSymbol

-

Non connection

I

JVC BUS COMMUNICATION LINE

I

JVC BUS COMMUNICATION LINE

O

JVC BUS COMMUNICATION LINE

O

JVC BUS COMMUNICATION LINE

-

Non connection

-

Non connection

-

Non connection

O

VOL IC COMMUNICATION LINE

O

VOL IC COMMUNICATION LINE

-

Non connection

O

CD DRIVER COMMUNICATION LINE

O

LCD DRIVER COMMUNICATION LINE

O

JVC BUS OUTPUT SELECT

-

Non connection

O

LCD DRIVER COMMUNICATION LINE

I

CD MECHA SW

I

CD MECHA SW

I

CD MECHA SW

I

TRAVERSE MECHA REST SW

I

ENCODER INPUT

I

ENCORDER INPUT

I

KEY INPUT

I

KEY INPUT

I

KEY INPUT

I

AUDIO LEVEL INPUT

-

-

I

SIGNAL LEVEL METER INPUT

I

DOOR OPEN DATECTION

-

Non connection

-

-

-

-

-

-

-

-

-

SYSTEM CLOCK

I

SYSTEM CLOCK

-

-

I

Connected to GND

-

STATION DETECTOR & STEREO IND.

-

-

I

Non connection

-

IF COUNT INPUT

I

-

-

FM,AM OSC INPUT

-

Non connection

O

-

O

PLL ERROR OUTPUT FOR AM

-

PLL ERROR OUTPUT FOR FM

I

SETTING TO WRITE FOR FLASH

FUNCTION

SYSTEM RESET

1-15

KD-SX777

Pin
NO.

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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

100

SW1
REMOCON
VTR-LOGIC
VTR-CONT
POWER
CD-ON
MUTE
NC
BUZZER
NC
NC
NC
NC
NC
NC
NC
NC
NC
LM0
LM1
BUCK
CCE
BUS0
BUS1
BUS2
BUS3
RST
PS1
PS2
DETACH
NC
GND1
MONO
SEEK/STOP
FM/AM
DIMIN
ANT
TEL MUTE
STAGE1
STAGE2
NC
NC
NC
NC
NC
NC
NC
DIMMER
VDDPORT
GNDPORT

I/OSymbol

I
I

-

­O
O
O

-

I

-

-

-

-

-

-

-

-

­O
O
O
O

I/O
I/O
I/O
I/O

O

I
I
I

-

­O
O
O

I

O

I
I
I

-

-

-

-

-

-

­O

-

-

UPD178078GF(2/2)

FUNCTION

CD MECHA SW
REMOCON INPUT
Non connection
Non connection
POWER CONT.
CD POWER CONT.
MUTE CONT
Non connection
BEEP FOR SW OPERATION
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
CD MECHA DRIVER CONT.
CD MECHA DRIVER CONT.
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
CD LSI COMMUNICATION LINE
ACC DETECTION INPUT
MEMORY DETECTION
DETACH DETECTION
Non connection
MONO BY FORCE
SWITCHING SEEK & STOP
BAND SW
OUTPUT L
ILM CONTROL
ANT COTROL
TEL MUTE IN
MODEL SETTING
MODEL SETTING
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
Non connection
DIMMER CONTROL

-

-

1-16

TA2109F-X (IC501) : RF amp.

1. Pin layout

24 13

112

2. Block diagram

SBAD

13

FEO

14

10pF

FEN

15

10k ohm

VRO

16

21k ohm

20k ohm

RFRP

17

RFIS

18

20k ohm

RFGO

19

50k ohm

36pF

7.96k ohm

50uA

20k ohm

15k ohm 30k ohm
15k ohm

20uA

10k ohm

21k ohm

12k ohm
12k ohm

PEAK

BOTTOM

10k ohm
10k ohm

30k ohm

21k ohm 29k ohm

24k ohm 24k ohm

180k ohm

1.74k ohm

20pF

65uA

10k ohm

47k ohm

SW3

13k ohm

7.67k ohm

3 STATE

DET.

SW1

1k ohm

SW2

680 ohm

2.12k ohm

20pF

LDC

TEO

TEN

2VRO

TEB

SEL

LDO

MDI

KD-SX777

12

11

10

9

8

7

6

3. Pin function

Pin

SymbolI/O

No.

Vcc
FNI
FPI
TPI
TNI

MDI

SEL
TEB

­I
I
I
I
I

O

I
I

O

I

O

10
11
12

1
2
3
4
5
6
7
8
9

LDO

2VRO

TEN
TEO

RFGC

20

AGCI

21

re=130 ohm

RFO

22

GND

23

RFN

24

23.5k ohm

3.3k ohm

12k ohm

1.53k ohm

3.3k ohm

Pin function

Power supply input terminal
Main beam I-V amp input terminal
Main beam I-V amp input terminal
Sub beam I-v input terminal
Sub beam I-V input terminal
Monitor photo diode amp input terminal
Laser diode amp output terminal
Laser diode control signal input terminal
T. error balance adj. signal input terminal
Reference voltage output terminal
TE amp negative input terminal
TE error signal output terminal

180k ohm

40pF

180k ohm

Pin
No.

13
14
15
16
17
18
19
20
21
22
23
24

180k ohm

20pF

60k ohm
60k ohm

40pF

SymbolI/O

SBAD

RFRP

RFGO
RFGC

FEO
FEN

VRO

RFIS

AGCI

RFO

GND

RFN

O
O

I
O
O

I
O

I

I
O

-

I

TNI

TPI

FPI

FNI

Vcc

5

4

3

2

1

I-I

I-I

20k ohm

20k ohm

20k ohm

20k ohm

Pin function

Sub beam adder signal output terminal
Focus error signal output terminal
FE amp negative input terminal
Reference voltage (VREF) output terminal
Track count signal output terminal
RFRP detect circuit input terminal
RF gain signal output terminal
RF amplitude adj. control signal input terminal
RF signal amplitude adj. amp input terminal
RF signal output terminal
Ground terminal
RF amp negative input terminal

1-17

KD-SX777

BD3860K (IC301):

Audio sound processor

1.Terminal layout

33

34

44

1

23

22

12

11

2.Pin function
Pin No.

Symbol

I/O Function
1 A2 I CH2 input pin A
2 B2 I CH2 input pin B
3 C2 I CH2 input pin C
4 D2 I CH2 input pin D
5 FIL - 1/2 VCC pin
6 GND - Ground pin
7 SI I Serial data receiving pin
8 SC I Serial clock receiving pin.
9 VCC - Power supply pin

10 OUTR2 O CH2 rear output pin
11 OUTF2 O CH2 front output pin
12 OUTR1 O CH1 rear output pin
13 OUTF1 O CH1 front output pin
14 BOUT1 O CH1 bass filter setting pin
15 BNF1 I CH1 bass filter setting pin
16 BOUT2 O CH2 bass filter setting pin
17 BNF2 I CH2 bass filter setting pin
18 TNF2 I CH2 treble filter setting pin
19 TNF1 I CH1 treble filter setting pin
20 TIN2 I CH2 treble input pin
21 BBOUT2 O CH2 BBE II signal output pin
22 MIX2 I CH2 output mix amplifier inverse input pin
23 VCA2 O CH2 high pass VCA output pin
24 LF2 I CH2 low pass filter setting pin
25 HF2 I CH2 high pass filter setting pin
26 DET2 I CH2 high pass attack/release time setting pin
27 DEF I BBE II on/off switching time constant pin
28 DET1 I CH1 high pass attack/release time setting pin
29 TIN1 I CH1 treble input pin
30 BBOUT1 O CH1 BBE II signal output pin
31 MIX1 I CH1 output mix amplifier inverse input pin
32 VCA1 O CH1 high pass VCA output pin
33 LF1 I CH1 low pass filter setting pin
34 HF1 I CH1 high pass filter setting pin
35 LOUD1 I CH1 loudness filter setting pin
36 VIN1 I CH1 main volume input pin
37 LOUD2 I CH2 loudness filter setting pin
38 VIN2 I CH2 main volume input pin
39 SEL2 O CH2 Input gain output pin
40 SEL1 O CH1 Input gain output pin
41 A1 I CH1 input pin A
42 B1 I CH1 input pin B
43 C1 I CH1 input pin C
44 D1 I CH1 input pin D

1-18

3.Block diagram

A1
B1
C1
D1

B2
C2
D2

A2

GND FIL VCC

956

SEL1

VIN1 LOUD1

HF1 LF1 DET1 VCA1 MIX1 BBOUT1

3132283334353640

30

TIN1 TNF1

29

19

BNF1 BOUT1

1415

POWER
SUPPLY

INPUT

41
42
43
44

1
2
3
4

INPUT

SELECTOR

GAIN
Oto 18dB

INPUT
GAIN

Oto 18dB

39

SEL2

MAIN
VOLUME
Oto -48dB
LOUDNESS

MAIN
VOLUME
Oto -48dB
LOUDNESS

3738

VIN2 LOUD2

LO CONTOUR(f=100Hz) 5dB
PROCESS CONTROL +3to12dB
(f=10KHz)

LOGIC

LO CONTOUR(f=100Hz) 5dB
PROCESS CONTROL +3to12dB
(f=10KHz)

25

24

HF2 LF2 DET2 VCA2 MIX2 BBOUT2

23

26

BASS

-14to+14dB

BASS

-14to+14dB

18

202122

TIN2 TNF2

TREBLE

-14to+14dB

TREBLE

-14to+14dB

17

BNF2 BOUT2

16

FADER
CH1 FRONT
Oto -54dB

FADER
CH1 REAR
Oto -54dB

FADER
CH2 FRONT
Oto -54dB

FADER
CH1 REAR
Oto -54dB

13

12

7

8
27
10

11

OUTR1
S1

SC
DEF

OUTR2

OUOTF2

1-19

KD-SX777

KD-SX777

LA4743K(IC351):Power AMP

1.Block diagram

IN 1

TAB

IN 2

+

0.22 F

+

0.22 F

11

1

12

Vcc 1/2 Vcc 3/4

6 20

-

+

Protective

circuit

-

+

2200 F 0.022 F

+

9

-

7

+

OUT 1+

OUT 1-

PWR GND1

8

+

OUT 2+

5

-

OUT 2-

3

PWR GND2

2

ST BY

R.F

47 F

IN 3

PRE GND

IN 4

+5V
ST ON

+

0.22 F

N.C

+

0.22 F

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

21

23

PWR GND3

OUT 4+

OUT 4-

13

14

Protective

circuit

-

+

+

-

1-20

ON TIME C

22 F

Muting &

16

+

ON Time Control

Circuit

PWR GND4

24

2.Terminal layout

3.Pin function

SymbolPin No. Function

KD-SX777

LA4743K

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

TAB
GND
OUTRF­STBY
OUTRF+
VCC1/2
OUTRR­GND
OUTRR+
RIPPLE
INRR
INRF
SGND
INLF
INLR
ONTIME
OUTLR+
GND
OUTLR­VCC3/4
OUTLF+
MUTE
OUTLF­GND
NC

Header of IC
Power GND
Outpur(-) for front Rch
Stand by input
Output (+) for front Rch
Power input
Output (-) for rear Rch
Power GND
Output (+) for rear Rch
Ripple filter
Rear Rch input
Front Rch input
Signal GND
Front Lch input
Rear Lch input
Power on time control
Output (+) for rear Lch
Power GND
Output (-) for rear Lch
Power input
Output (+) for front Lch Add
Muting control input
Output (-) for front Lch Add
Power GND
Non connection

1-21

KD-SX777

TC9462F(IC521) : DSP&DAC

1.Pin layout & Block Diagram

RST

DD

XV

80

79

81DV

SR

82RO
83DV

DD

84DVR
85LO
86DV

SL

87TEST1
88TEST2
89TEST3
90BUS0
91BUS1
92BUS2
93BUS3
94V

DD

95V

SS

96BUCK
97CCE
98TEST4
99TSMOD

100

1 2 3

TEST0

XO78XI

LPF

HSO

Micon

interface

UHSO

SS

XV

77

4 5

EMPH

DD

V

75

76

1bit

DAC

PXO

SS

PXI

V

74

73

Clock

generator

Correction

circuit

Audio out

circuit

6

7 8 9 10 11 12 13

SS

V

BCK

LRCK

AOUT

TESIO1

72

DOUT

71

TESIN

MBOV

DACT

69

70

Address circuit

16KRAM

Digital out

IPF

CKSE

SBOK

DMOUT

68

CLCK

IO3

IO265IO164IO063V

67

66

ROM

Automatic adjustment

RAM

Synchronous

guarantee

EFM decode

Sub code

decoder

14 15

16 17 18 19 20 21 22

SS

DD

V

V

DATA

SFSY

SS

DD

V

61

62

Servo

control

Digital equalizer

circuit

CLV servo

SBSY

SPCK

FLGD60FLGC59FLGB58FLGA57SEL562V

PWM D/A

A/D

Status

TMAX

23 24 25

DD

COFS

MONIT

V

SPDA

REF

DMO54FVO53FMO52TEBC51RFGC

55

+

-

Data

slicer

VCO

+

PLL

26

27 28

PDO

ZDET

HSSW

50 V

REF

49 TRO
48 FOO

TEZI

47

+

-

-

-

29

+

TMAXS

30

TMAX

46 TEI
45 TSIN
44 SBAD
43 FEI
42 RFRP
41 RFZI
40 RFCT
39 AV

DD

38 RFI
37 SLCO
36 AV

SS

35 VCOF
34 VCOREF
33 PV

REF

32 LPFO
31 LPFN

2.Pin function

Pin No.

10
11

1213SBOK

1

2

3
4

5
6

7
8
9

Symbol
TEST0

HSO

UHSO

EMPH

LRCKOO

V

SS

BCK

AOUT
DOUT
MBOV

IPF

CLCK

Function

I/O

Test mode terminal.Normally, Keep at open.

I

Playback speed mode flag output terminal.

UHSO

HSO

O

H
H
L

O

L

PLAYBACK SPEED

H

L

H

L

Nomal
2 times
4 times

--

Subcode Q data emphasis flag output terminal.Emphasis ON at "H" level
and OFF at "L"level.The output polarity can invert by command.
Channel clock output terminal.(44.1khz)L-ch at "L" level and R-ch at
"H" level. the output polarity can invert by command.

Digital GND terminal.

--

O

Bit clock output terminal.(1.4112MHz)
Audio data output terminal.

O

Digital data output terminal.

O

Buffer memory over signal output terminal. Over at "H" level.

O

Correction flag output terminal. At "H" level,AOUT output is made to

O

correction impossibility by C2 correction processing.
Subcode Q data CRCC check adjusting result output terminal.

O

The adjusting result is OK at "H" level.
Subcode P~W data readout clock input/output terminal.

I/O

This terminal can select by command bit.

TC9462F(1/2)

Remarks
With pull-up resistor.

--

--

--

--

--

--

--

--

--

--

--

1-22

Pin No.

14
15
16
17
18
19
20
21
22

2324V

25
26
27
28

29

Symbol

V

DD

V

SS

DATA
SFSY
SBSY
SPCK
SADA
COFS

MONIT

DD

TESIO0--I

P2V

REF

HSSW

ZDET

PDO

TMAXS

I/O

--

Digital power supply voltage terminal.

--

Digital GND terminal.

O

Subcode P~W data output terminal.

O

Play-back frame sync signal output terminal.

O

Subcode block sync signal output terminal.

O

Processor status signal readout clock output terminal.

O

Processor status signal output terminal.

O

Correction frame clock output terminal. (7.35kHz)
Internal signal (DSP internal flag and PLL clock) output terminal.Selected

O

by command.This terminal output the text data with serial by command.
Digital power supply voltage terminal.

Test input/output terminal.Normally,keep at "L" level.
The terminal that inputted the clock for read of text
data by command.

--

PLL double reference voltage supply terminal.

O

2/8 times speed at "VREF" voltage.
1bit DA converter zero detect flag output terminall.

O

Phase differnce signal output terminal of EFM signal

O

and PLCK signal.

O

TMAX detection result output terminal. Selected by
command bit (TMPS).

KD-SX777

TC9462F(2/3)

Remarks

--

--

--

--

--

--

--

--

--

--

--

2-state output.(PVREF,Hiz)

3-state output.
(P2VREF,PVREF,VSS)

3-state output.
(P2VREF,PVREF,VSS)

30

31
32
33
34

35
36
37
38

39
40
41
42
43

TMAX

LPFN

LPFO

PVREF

VCORE
VCOF

AVSS

SLCO

RFI

AVDD
RFCT

RFZI

RFRP

FEI

TMAX detection result output terminal. Selected by

O

command bit (TMPS).

DIFFERENCE RESULT
Longer than fixed freq.

Shorter than fixed freq.
Within the fixed freq.

I

LPF amplifier inverting input terminal for PLL.

O

LPF amplifier output terminal for PLL.

--

PLL reference voltege supply teminal.

VCO center frequency reference level terminal.

I

TMAX OUTPUT

"P2VREF"

"VSS"

"Hiz"

Normally, keep at "PVREF" level.

O

VCO filter terminal.

--

Analog GND terminal.

O

Data slice level output terminal.

I

RF signal input terminal.

Analog power suppyl coltage terminal.

-­RFRP signal center level input terminal.

I

RFRP zero cross input teminal.

I

RF ripple signal input terminal.

I

Forcus error signal input terminal.

I

3-state output.
(P2VREF,Hiz,VSS)

Analog input.

Analog output.

--

--

Analog output.

--

Analog output.

Analog input. (Zin:

selected by command)

Analog output.

Analog output. (Zin:50k)

Analog input.
Analog input.
Analog input.

1-23

KD-SX777

Pin No.

44
45
46
47
48

49
50
51
52
53
54
55

56
57

58 61

62
63

64 67

68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85

86
87 89
90 93

94

95

96

97

98

99

100

Symbol

SBAD

TSIN

TEI
TEZI
FOO

TRO

VREF

RFGC

TEBC

FMO

FVO

DMO

2VREF

SEL

FLGA D

VDD
VSS

IO0 3

DMOUT

CKSE

DACT

TESIN

TESIO1

VSS

PXI
PXO
VDD

XVSS

XI

XO

XVDD

DVSR

RO

DVDD

DVR

LO

DVSL

TEST1 3

BUS0 3

VDD
VSS

BUCK

CCE

TEST4

TSMOD

RST

I/O

Sub-beam adder signal input terminal

I

Test input terminal Normally, keep at "vref" level

I

Tracking error signal input terminal. Take in at tracking servo ON.

I

Tracking error zero cross input terminal

I

Focus servo equalizer output terminal

O

Tracking servo equalizer output terminal

O

Analog reference voltage supply terminal

­RF amplitude adjustment control signal output terminal

O

Tracking balance control signal output terminal

O

Feed equalizer output terminal

O

Speed error signal or feed search equalizer output terminal

O

Disk equalizer output terminal

O

Synchronize to PXO)

Analog double reference voltage supply terminal

­APC circuit ON/OFF indication signal output terminal

O

External flag output terminal for internal signal

O

Digital power supply voltage terminal

­Digital GND terminal

­General I/O terminal

I/O

This terminal control IO0 IO3 terminal

I

Normally, keep at open

I

DAC test mode terminal. Normally, keep at open

I

Test input terminal, Normally, keep at "L" level

I

Test input/output terminal. Normally, keep at "L" level

I

Digital GND terminal

­Crystal oscillator connecting input terminal for DSP

I

Crystal oscillator connecting output terminal for DSP

O

Digital power supply voltage terminal

­Oscillator GND terminal for system clock

­Crystal oscillator connecting input terminal for system clock

I

Crystal oscillator connecting output terminal for system clock

O

Oscillator power supply voltage terminal for system clock

­Analog GND terminal for DA converter (Rch)

­R channel data forward output terminal

O

Analog supply voltage terminal for DA converter

­Reference voltage terminal for DA converter

­L channel data forward output terminal

O

Analog GND terminal for DA converter (Lch)

­Test mode terminal . Normal keep at open

I

Micon interface data input/output terminal

I/O

Digital power supply voltage terminal

­Digital GND terminal

­Micon interface clock input terminal

I

Command and data sending/receiving chip enable signal

I

FunctionFunction

(PWM carrier=88.2kHz for DSP,

input terminal
Test mode terminal. Normal, keep at open

I

Local test mode selection terminal

I

Reset signal input terminal. Reset at "L" level

I

TC9462F(3/3)

Remarks

Analog input.
Analog input.
Analog input.

Analog input

.

(Zin:10k)

Analog output

REF AVss)

(2V
3-state PWM signal
output.
2V

REF.VREF.VSS

(PWM carrier=88.2kHz)

3-state output
(2V

REF.VREF.VSS)

--

--

--

--

--

-­With pull-up resistor.
With pull-up resistor.
With pull-up resistor.
Analog input.
Analog input.

--

--

--

--

--

--

--

--

--

--

--

--

--

-­With pull-up resistor.
Schmit input.
With pull-up resistor.

--

-­Schmit input.
Schmit input.

With pull-up resistor.
With pull-up resistor.
With pull-up resistor.

1-24

KD-SX777

HA13164A (IC961) :

1. Pin layout

Regulator

ANT CTRL

AUDIOOUT

2. Block diagram

ANTOUT

EXTOUT

CTRL

CDOUT

2

1

7

11

12

10

VCC

8

Surge Protector

BIAS

­+

­+

ACC

3

TSD

+

-

+

-

+

-

­+

9

BATT.DET
OUT

COMP

6

OUT

4

VDDOUT

SW5V

5

OUT

14

IL MOUT

3.Pin function

Pin No.

1
2
3
4
5
6
7
8

9
10
11
12
13
14

Symbol

EXT OUT O
ANT OUT O

ACCIN I

VDD OUT O
SW 5VOUT O
COMPOUT O
ANT CTRL I

VCC -

BATT DET I

AUDIO OUT O

CTRL I

CD OUT O

ILM AJ I

ILM OUT O

15 GND -

GND

15

13

ILM AJ

I/O Function

Output voltage is VCC-1V controlled by CTRL pin (M or H).
Output voltage is VCC-1V controlled by CTRL (M or H) and ANT-CTRL(H).
Connected to ACC.
Regulated 5.7V output.
Output voltage is 5V controlled by CTRL pin (M or H).
Output for ACC detector.
L: ANT output off, H: ANT output on.
Connected to VCC.
Low battery detect.
Output voltage is 9V controlled by CTRL pin (M or H).
L: Bias off, M: Bias on, H: CD on.
Output voltage is 8V controlled by CTRL pin (H).
ILM output voltage adjust.
Output voltage is 10V controlled by CTRL pin (H).
Connected to GND.

1-25

KD-SX777

LA6567H-X(IC581):CD DRIVER

1.Pin layout & blockdiagram

VCC2

VO5-

VO5+

VO4+

VO4-

VO3+

VO3-

FR

1

2

3

4

5

6

7

FR

CH 3,4,5

Power supply

CH5

CH4

CH3

Thermal shutdown

Output control

Level shiftLevel shiftLevel shiftLevel shift

Input

22K 11K

Signal system power supply

28

27

26

25

24

23

22

FR

REV

FWD

S-GND

VCONT

VIN4

VIN4G

VCC-S

FR

VO2+

VO2-

VO1+

VO1-

VCC1

VIN1

VIN1G

8

9

10

11

12

13

14

CH2

CH1

CH1,2

Power supply

11K

22K

5VREG(PNPTr

The outside putting)

22K

11K

22K

11K

21

20

19

18

17

16

15

VREF-IN

REG-OUT

REG-IN

VIN3G

VIN3

VIN2G

VIN2

1-26

KD-SX777

2. Pin function
Pin no. Symbol

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15

VCC2

VO5­VO5+
VO4+

VO4­VO3+

VO3­VO2+

VO2­VO1+

VO1-

VCC1

VIN1

VIN1G

VIN2

LA6567H-X(2/2)

Function

CH3,4,5 Power supply( It is short with VCC1,VCC-S)
Loading output(-)
Loading terminal (+)
CH4 Output terminal(+)
CH4 Output terminal(-)
CH3 Output terminal(+)
CH3 Output terminal(-)
CH2 Output terminal(+)
CH2 Output terminal(-)
CH1 Output terminal(+)
CH1 Output terminal(-)
CH1,2(BTL) Power supply(It is short with VCC-S,VCC2)
CH1 Input terminal
CH1 Input terminal(For gain adjustment)

CH2 Input terminal
16
17
18
19
20
21
22
23
24
25
26
27

28

Frame(FR)at the center becomes system GND.
Please be short-circuited on the outside and use the terminal of the power supply system
and three teminals of VCC-S, VCC1,VCC2.

VIN2G

VIN3

VIN3G

REG-IN

REG-OUT

VREF-IN

VCC-S

VIN4G

VIN4

VCONT

S-GND

FWD

REV

CH2 Input terminal(For gain adjustment)

CH3 Input terminal

CH3 Input terminal(For gain adjustment)

Regulator terminal(Outside putting PNP base)

Regulator terminal(Outside putting PNP collector)

Standard voltage input terminal

Signal system power supply(It is short with VCC1,VCC2)

CH4 Input terminal(For gain adjustment)

CH4 Input terminal

5CH(VLO) Output voltage set terminal

Signal system GND

5CH(VLO)Signal output switch terminal(FWD),Input of logic of loading part

5CH(VLO)Signal output switch terminal(REV),

Input of logic of loading part

1-27

KD-SX777

HD74HC126FP-X (IC771) : Buffer

1.Terminal layout

1
2
3
4
5
6
7

2.Block diagram

14
13
12
11
10

9
8

Vcc Vcc

1k

3.Pin function

Input Outout

C
L
H
H

A
X
L
H

Y
Z
H
L

Input

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

See Function Table

4C

1Y

2Y
3Y
4Y

Output

Output
Output

Output

S1

CL

Sample as Load Circuit 1
Sample as Load Circuit 1

Sample as Load Circuit 1

1k

1-28

LC75873NW (IC601) : LCD Driver

1.Terminal layout

60 41

KD-SX777

2.Pin function
Pin No.

1 58
59 66
67 69

79,80

SEG3 SEG60

COM1 COM3
70
71
72
73
74
75
76
77
78

SEG1,SEG2

61

80

Symbol

VDD
VDD1
VDD2

VSS

OSC

INH

CE2

CL

120

DI

40

21

I/O Function

O

Segment outputs
Non connection

O

Common driver outputs
Power supply terminal

I

LCD drive bias 2/3 voltage input

I

LCD drive bias 1/3 voltage input
Power supply termina

I/O

Comected to oscilator

I

Display off input

I

Serial data transfer:Chip enable

I

Serial data transfer:Sync.clock

I

Serial data transfer:data

O

Segment outputs

1-29

KD-SX777

NJM4565M-WE (IC111) : Ope. amp

A OUTPUT

1

+

8

V

-

A INPUT

+

A INPUT

V

2

3

-

4

B OUTPUT

7

B INPUT

-

6

5

+

B INPUT

RPM6938-SV4(IC602) : Remote Sensor

AGC

AMP

I/V
conversion

BPF

Detector

Vcc

Comp

Vcc

22k

Rout

1-30

PD

magnetic shield

fo
trimming
circuit

GND

KD-SX777

VICTOR COMPANY OF JAPAN, LIMITED

MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BISINES UNIT 10-1,1chome,Ohwatari-machi,Maebashi-city 371-8543,Japan

(No.49636)

Printed in Japan
200104(V)