CD HEAD AMP REGULATOR - ePanorama.net | Audio Gx-700vcd... · cross + 25 teout 26 te ... regulator level shift 3 ... cd head amp spc & dac act motor drive motor drive cd cpu lpf muting

A B C D E F G H

1

2

3

4

5

6

I J K L M N

7

8

9

10

GX-700/GX-700VCD

SCHEMATIC DIAGRAM (GX-700 CD)

* All voltage are measured with a 10MΩ/V DC electric volt meter.* Components having special characteristics are marked Z and

must be replaced with parts having specifications equal to thoseoriginally installed.

* Schematic diagram is subject to change without notice.

Point q (Pin59 of IC5)V : 5V/div H : 50 nsec/divDC range 1 : 1 probe

Point w (Pin39 of IC11)V : 2V/div H : 50 nsec/divDC range 1 : 1 probe

IC2 : AN8803SBDigital Servo Head Amp

36PDAC

EQ

+

35PDBD +

31PDFR

34PDF +

32PDER

33PDE +

+

+

VCBA

+ +

VCBA

29

F.B

AL

7

RF

OU

T

6

RF

–

+

27

FE

OU

T

28

FE

–

+VCBA

+VCBA

+

+

30

TB

AL

+

24

CR

OS

S

+

25

TE

OU

T

26

TE

–

8

RF

IN

RFDETECT

9

C.A

GC

AGC

10

AR

F

17

RF

DE

T

ENV DETECT

11

C.E

NV

12

C.E

A

19

EN

V

BDO

OFTR

13 C.SBDO

14 BDO

15 C.SBRT

16 OFTR

18 GND

5 VCC

+

23

TE

BP

F

+

22

VD

ET

+20 VREF

1

PD

4

LDP

3

LDO

N

2 LD

21 LD OFF

–+

OUT1

–IN1

–VCC

+VCC

OUT2

1

2

3

4 5

+IN1 –IN2

+IN2

–+

6

7

8

IC10 : µPC4570G2Dual OP-Amp

IC1 : LA6541D4 Channel BTL Driver

VCC

MUTE

VIN1

VG1

VO1

VO2

GND

GND

1

2

3

4

5

6

7

8

GND

VO3

VO4

VG2

VIN2

REG OUT

REG IN

9

10

11

12

13

14

15

VCC

VREF

VIN4

VG4

VO8

VO7

GND

GND

30

29

28

27

26

25

24

23

GND

VO6

VO5

VG3

VIN3

CD

RES

22

21

20

19

18

17

16RESET

+–

+–

REGULATOR

LEVEL SHIFT3

LEVEL SHIFT2

BTL AMP3

BTL AMP2

LEVEL SHIFT4

11KΩ 11KΩLEVEL SHIFT1

BTL AMP4

VCC

11KΩ11KΩ

BTL AMP1

IC3, 4 : TA8409SFull Bridge Motor Driver

9

2 6

7

3

8

5

1

STAND-BYCIRCUIT

VREFCIRCUIT

THERMAL SHUTDOWN

CIRCUIT

VCC VS

VREF

OUT 1

OUT 2

IN 1

IN 2

GND

IC7, 9 : TC74HC125AFQuad 3 State Bus Buffers

1A

1Y

1C Vcc

4C

1

2

3

4 112C

4A

4Y

12

13

14

2A

2Y

3C

3A

5

6

7GND 3Y8

9

10

IC13 : TC74HC04AFHex Inverters

1A

1Y

2Y

VDD

6A

1

2

3

4 11

2A 6Y

5A

12

13

14

3A

3Y

5Y

4A

5

6

7VSS 4Y8

9

10

IC8 : TC74VHC14FHex Schmit Trigger Inverters

VDD14

I613

O612

I511

O510

I49

O48

I1 1

O1 2

I2 3

O2 4

I3 5

O3 6

VSS 7

0V

0V

CD HEAD AMP

SPC & DACACT

MOTORDRIVE

MOTOR DRIVE

CD CPU

LPF

MUTING

REGULATORREGULATOR

CD(Lch)

2.42.40

01.5

1.2

2.42.

5

2.5

2.42.4

2.4

2.42.

42.

42.

42.

42.

40.

13.

84.

9 0 4.9

2.4

2.9 2.5

3.6 1.

63.

8 3.2

3.5

0.6

3.5 0 0

0

3.84.

41.

9

0 0.2

0.6

0.2

6.36.22.42.42.43.0000

2.8

2.72.4

2.4

6.32.52.42.42.72.7000

3.1

2.42.4

2.40.8

2.5

6.2

0

0

06.

20.

911.10

1.14.80

04.

81.

1 011

.11.

22.

7 0

0

6.2

0

0

4.7

0

2.51.2

2.52.2

4.9

0

02.42.34.9

0 4.9

4.7

2.4 0 2.4

4.9 0 ~

2.4

2.4

4.9

0.6 0

1.2

0.2 0

2.4

2.5

2.5

2.6

2.3

2.4

2.4

2.4

2.4

2.4

2.3

2.4

2.4

4.34.9

0~

4.70000

4.7~

2.4~

04.9

~2.42.4

4.8 5.5

8.54.9

7.9

7.9

01.2

1.8

1.21.200

0

2.7

0

0

0

00

6.86.8

6.8

6.3 11.1

4.8

04.7

4.700

4.8

4.84.8

0

4.8

4.7

~

~

~~

4.7

0

0

0

0 0 4.8

0 04.

9

0 ~4.

64.

30 0

~ ~ 4.8

0 0 4.7

0 0 0 00 0

4.800000000

4.80000000000

4.34.7

2.12.3

000000

0

00

4.800

0 0 00 0 0 0 0 0 0 00 04.7

4.7

4.7

4.8

4.8

0 00 0 0 0 0

0 4.8

00

4.8

4.8

4.8-11.9

-11.9

0

0

0

0-11.9

000

-12.0

12.4

00

0

q

w

831

2

6

57

4

12

5

43

6

14

12

1311

109

465

21

8 9

7

3

7

8

14

10 11

66

MAIN(1)P73A-2

INPUT(1)P68A-9

EFFECT(1)P72I-5

A B C D E F G H

1

2

3

4

5

6

I J K L M N O

7

8

9

10

GX-700/GX-700VCD

SCHEMATIC DIAGRAM (GX-700VCD VCD)




Point q (Pin59 of IC5)V : 5V/div H : 50 nsec/divDC range 1 : 1 probe

Point w (Pin39 of IC11)V : 2V/div H : 50 nsec/divDC range 1 : 1 probe

IC2 : AN8803SBDigital Servo Head Amp

36PDAC

EQ

+

35PDBD +

31PDFR

34PDF +

32PDER

33PDE +

+

+

VCBA

+ +

VCBA

29

F.B

AL

7

RF

OU

T

6

RF

–

+

27

FE

OU

T

28

FE

–

+VCBA

+VCBA

+

+

30

TB

AL

+

24

CR

OS

S

+

25

TE

OU

T

26

TE

–

8

RF

IN

RFDETECT

9

C.A

GC

AGC

10

AR

F

17

RF

DE

T

ENV DETECT

11

C.E

NV

12

C.E

A

19

EN

V

BDO

OFTR

13 C.SBDO

14 BDO

15 C.SBRT

16 OFTR

18 GND

5 VCC

+

23

TE

BP

F

+

22

VD

ET

+20 VREF

1

PD

4

LDP

3

LDO

N

2 LD

21 LD OFF

–+

OUT1

–IN1

–VCC

+VCC

OUT2

1

2

3

4 5

+IN1 –IN2

+IN2

–+

6

7

8

IC10 : µPC4570G2Dual OP-Amp

IC1 : LA6541D4 Channel BTL Driver

VCC

MUTE

VIN1

VG1

VO1

VO2

GND

GND

1

2

3

4

5

6

7

8

GND

VO3

VO4

VG2

VIN2

REG OUT

REG IN

9

10

11

12

13

14

15

VCC

VREF

VIN4

VG4

VO8

VO7

GND

GND

30

29

28

27

26

25

24

23

GND

VO6

VO5

VG3

VIN3

CD

RES

22

21

20

19

18

17

16RESET

+–

+–

REGULATOR

LEVEL SHIFT3

LEVEL SHIFT2

BTL AMP3

BTL AMP2

LEVEL SHIFT4

11KΩ 11KΩLEVEL SHIFT1

BTL AMP4

VCC

11KΩ11KΩ

BTL AMP1

IC3, 4 : TA8409SFull Bridge Motor Driver

9

2 6

7

3

8

5

1

STAND-BYCIRCUIT

VREFCIRCUIT

THERMAL SHUTDOWN

CIRCUIT

VCC VS

VREF

OUT 1

OUT 2

IN 1

IN 2

GND

IC7, 9 : TC74HC125AFQuad 3 State Bus Buffers

1A

1Y

1C Vcc

4C

1

2

3

4 112C

4A

4Y

12

13

14

2A

2Y

3C

3A

5

6

7GND 3Y8

9

10

IC13 : TC74HC04AFHex Inverters

1A

1Y

2Y

VDD

6A

1

2

3

4 11

2A 6Y

5A

12

13

14

3A

3Y

5Y

4A

5

6

7VSS 4Y8

9

10

IC8 : TC74VHC14FHex Schmit Trigger Inverters

VDD14

I613

O612

I511

O510

I49

O48

I1 1

O1 2

I2 3

O2 4

I3 5

O3 6

VSS 7

0V0V

NO. TERMINAL I/O FUNCTION1 A+3.3V +3.3V POWER SUPPLY FOR ANALOG VIDEO2 CVOUT O COMPOSITE VIDEO OUT3 COUT O C VIDEO OUTPUT (S)4 YOUT O Y VIDEO OUTPUT (S)5 VGND ANALOG VIDEO GROUND6 VGND ANALOG VIDEO GROUND7 R+5V DIGITAL +5V POWER SUPPLY8 D+3.3V DIGITAL +3.3V POWER SUPPLY9 D+3.3V DIGITAL +3.3V POWER SUPPLY10 DGND DIGITAL GROUND11 DGND DIGITAL GROUND12 XCK I AUDIO EXTERNAL FREQUENCY CLOCK13 EMPH O AUDIO EMPHASIS OUTPUT14 DILRCK O AUDIO LEFT RIGHT CLOCK15 HRDY O HOST DATA READY16 DISCK O AUDIO BIT CLOCK17 DIDATA O AUDIO DATA SERIAL BUS18 HINT O HOST INTERRUPT19 SBCK O SUBCODE CLOCK FOR CD-G20 VRST I HARDWARE RESET (LOW ACTIVE)21 HCK I HOST CLOCK22 HDIO I/O HOST SERIAL DATA BUS23 CDSCK I CD BIT CLOCK24 CDDATA I CD DATA25 CDLRCK I CD LEFT RIGHT CLOCK26 IPFLG I CD DATA ERROR FLAG (C2P0)27 HSEL I HOST ADDRESS/DATA SELECT28 SUBC I SUBCODE DATA FOR CD-G29 CLDCK I SUBCODE FRAME SYNC FOR CD-G30 BLKCK I SUBCODE BLOCK SYNC FOR CD-G

CONNECTION TERMINAL SPECIFICATION

NOTE: None of the components of the VCD module can be suppliedseparately. Only a VCD module unit (VZ150200) is available.

VCD MODULEVZ150200

2. SUBCODE INTERFACE

3. AUDIO OUTPUT INTERFACE

4. HOST INTERFACEHOST READ TIMING

HOST WRITE TIMING

CD HEAD AMP

SPC & DACACT

MOTORDRIVE

MOTOR DRIVE

CD CPU

LPF

MUTING

REGULATORREGULATOR

CD(Lch)

2.42.40

01.5

1.2

2.42.

5

2.5

2.42.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

0.1

3.8

4.9 0 4.

92.

42.

9 2.5

3.6 1.

63.

8 3.2

3.5

0.6

3.5 0 0

0

3.84.

41.

9

0 0.2

0.6

0.2

6.36.22.42.42.43.0000

2.8

2.72.4

2.4

6.32.52.42.42.72.7000

3.1

2.42.4

2.40.8

2.5

6.2

0

0

06.

20.

911.10

1.14.80

04.

81.

1 011

.11.

22.

7 0

0

6.2

0

0

4.7

0

2.51.2

2.52.2

4.9

0

02.42.34.9

0 4.9

4.7

2.4 0 2.4

4.9 0

2.5

2.4

2.5

4.9

0.6 0

1.2

0.2 0

2.4

2.5

2.5

2.6

2.3

2.4

2.4

2.4

2.4

2.4

2.3

2.4

2.4

4.34.9

0~

4.80000

4.8~

0~

04.9

2.42.42.4

4.8 5.5

8.54.9

7.9

7.9

01.2

1.8

1.21.200

0

2.7

0

0

0

00

6.86.8

6.8

6.3 11.1

4.8

04.8

4.80

0

4.84.8

4.8

0

4.8

4.8

~

~

~~

4.8

0

0

0 4.9

4.8

0 0

0 ~4.

64.

30 0

~ ~ 4.8

0 0 4.8

0 0 0 00 0

4.800000000

4.80000000000

4.30

4.8

4.7

2.02.3

000000

0

00

4.800

0 0 0

0 0 0 0 0 0 00 04.7

4.8

4.8

4.8

4.8

0 00 0 0 0 0

0 4.8

4.8

4.8

4.8-11.9

-11.9

0

0

0

0-11.9

000

-12.0

12.4

00

0

4.8 0

0

2.4 2.4

4.9

4.94.9 0

0

4.800

0

00

04.8

4.80

~

4.8

4.8

4.8

q

w

831

2

6

57

4

12

5

43

6

14

73

7

56 3

4

14

21

5

4

6

2 1

14

12

1311

109

465

21

8 9

7

3

8

14

10 11

VCD (1)

VCD (2)

67

MAIN(1)P73A-2

INPUT(1)P69A-9

EFFECT(1)P72I-5

EFFECT(1)P72A-5

A B C D E F G H

1

2

3

4

5

6

I J K L M N

7

8

9

10

GX-700/GX-700VCD

SCHEMATIC DIAGRAM (GX-700 INPUT) The voltages are measured by LH tape at PLAY mode (no-signal condition)Only the voitages ( ) are at REC mode.

DOLBY NR OFF




IC3, 4 : TC4052BFDual 4 Channel Analog Multiplexers/Demultiplexers

INHIBIT00001

B0011X

A0101X

0x, 0y1x, 1y2x, 2y3x, 3yNONE

IC7 : LC75393EElectronic Volume Control

CC

B B

US

INT

ER

FA

CE

DE

CO

DE

R +

LA

TC

HE

S

RSBC2

RHP1

RHP2

RRECOUT10

RRECIN10

RRECOUT1

RCOM1

RH

RF2C1

RF2C2

RF2C3

RF1C1

RF1C2

RF1C3

RTIN

RSVROUT

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

LSBC2

LHP1

LHP2

LRECOUT10

LRECIN10

LRECOUT1

LCOM1

LH

LF2C1

LF2C2

LF2C3

LF1C1

LF1C2

LF1C3

LTIN

LSVROUT

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

RS

BC

1

RC

OM

2

R1d

BO

UT

R10

dBIN

R10

dBO

UT

RV

SS

CE

DI

CL

DV

SS

LVS

S

L10d

BO

UT

L10d

BIN

L1dB

OU

T

LCO

M2

LSB

C1

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

VC

OF

F

VC

ON

DIR

EC

T P

AS

S

DIR

EC

T P

AS

S

VC

OF

F

VC

ON

RS

VR

IN

RV

CO

UT

VD

D

RV

ref1

RV

ref2

RIN

VC

4

VC

3

VC

2

VC

1

LIN

LVre

f2

LVre

f1

MIC

IN

LVC

OU

T

LSV

RIN

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

IC5 : µPD4066BGQuad Analog Switch/Multiplexer

SWA

IN/OUT 1

OUT/IN 2

OUT/IN 3

IN/OUT 4

CONT B 5

CONT C 6

VSS 7

14 VDD

13 CONT A

12 CONT D

11 IN/OUT

10 OUT/IN

9 OUT/IN

8 IN/OUT

SWD

SWB

SWC

SIG/A

SIG/B

SIG/D

SIG/C

16

VDD6

INHIBIT

10A9B8VSS7VEE

12X0

14X1

15X2

11X3

1Y0

5Y1

2Y2

4Y3

LEVELCONVERTER

BINARY TO 1-OF-4DECODER WITH INHIBIT

SW

SW

SW

SW

SW

SW

SW

SW

13 X

3 Y

IC10 : BA15218NDual OP-Amp

–IN

1

2

+IN

1

3

–VC

C

4

+IN

2

5

–IN

2

6

OU

T2

7

+V

CC

8

OU

T1

1

–

+

–

+

IC1 : LB1641Motor Driver

23

P1

5IN 1

1GND

4 VZ

6 IN 2

OU

T 1

8

VC

C 2

10

OU

T 2

9

P2

INPUT LOGIC

PR

E D

RIV

ER

7

VC

C 1

IC2 : µPC1330HA2 ch Head Selector Switch

INVERTER

COMPARATOR

1

SW

R 1

2

GN

D

3

SW

P 1

4

CO

NT

5

GN

D

6

VC

C

9

SW

R 2

8

GN

D

7

SW

P 2

105HzBPF

VREF

BIAS

340HzBPF

1kHzBPF

3.4kHzBPF

DIF

10.5kHzBPF

PEAKHOLD

PEAKHOLD

PEAKHOLD

PEAKHOLD

PEAKHOLD

RES

RES

RES

RES

MPX

DEC

RES

REFFERENCE CURRENT

6

7

8

9

5

4

3

2

1

13

12

11

10

14

15

16

17

18BIASC

VREFC

BREF

N. C.

N. C.

DIF OUT

C IN

A IN

VCC

GND

A OUT

TEST

N. C.

N. C.

SEL

C

B

A

A – C

C

A

IC26 : BA3835S5-Band BPF and Peak Hold for Spectrum Analyzer

IC9, 11, 21 : µPC4570G2Dual OP-Amp

–+

OUT1

–IN1

–VCC

+VCC

OUT2

1

2

3

4 5

+IN1 –IN2

+IN2

–+

6

7

8

IC6 : CXA1897QDolby B-Type Noise Reduction System with Recording/PlaybackEqualizer

17 222019

REC EQCTL

REC EQCTL

GN

D

D PB IN1

NRSW

GND

AGC OUT1

VCC

10K40K

10dB

AM

P

IREF MUTE

36

D TC1

DR

OU

T1

RE

C IN

1

DE

CK

AB

A E

Q

B E

Q

RE

C O

UT

1

RE

C O

UT

2

SP

EE

D

FP

CA

L

GP

CA

L

RE

C IN

2

DR

OU

T2

VCC

RFC

AMS OUT

AMS GAIN

35

34

32

30

29

27

26

2512

24

D REC IN1

D IREF

GN

D

31

NR

D L OUT2

NR

AM

S

18 2115 1613 14

454648 47

RECEQ

RECEQ

11

10

9

8

7

6

AGC

IREF

AGC IN1

D PBIN2

MODE

AGC OUT2

D TC2

GND

IREF

VG

AGC TC

D REC IN2

REC MUTE

D L OUT2

AGC IN210K 40

K10

dBA

MP

5

4 33

3

2

1

44 43

GN

D

PB

OU

TB

1

PB

OU

TA

1

PB

FB

21

PB

FB

11

PB

INB

1

PB

INA

1

PB

INA

2

PB

INB

2

PB

FB

12

PB

FB

22

PB

OU

TA

2

PB

OU

TB

2

GN

D

GN

D

41 39 37

GN

D

GN

D

23

3840

28

42

Point e (Pin37 of IC8)V : 2V/div H : 20 µsec/divDC range 1 : 1 probe

Point r (Pin39 of IC8)V : 2V/div H : 50 nsec/divDC range 1 : 1 probe

Point t

CH1 : Collector of Q19 CH2 : Anode of D11

H : 0.5 sec/div DC range 1 : 1 probe

V : 2V/div (CH1)V : 2V/div (CH2)

(This waveform is not available by pushing the power switch ON and OFF.)

CH 1

CH 2

With the POWER ON,disconnect the A/C powercord. Reconnect the A/Cpower cord and the abovewaveforms will start.

Disconnect thepower cord fromthe AC outlet.

0V0V

1

2

3

4

5

6

7

8

9

10

11

12

13

1. R ¥ REC

2. METAL

3. F ¥ REC

4. CASS IN

5. CrO2

6. +SOL

7. SENSOR OUT

8. +5V SENSOR

9. PLAY SW

10. +MTR

11. —COM

12. MTR SPEED B

13. MTR SPEED A

MAIN PCB

—+BA

MABUCHIMTR

MECHA CHASSISPH TYPE (JST)

SOL

1

2

3

4

5

1. LOAD OUT (+)

2. LOAD IN (+)

3. LOAD OUT

4. COM

5. LOAD IN

LOADING PCB

PH TYPE (JST)

MTR

+

1. Lch

R / P HD

PH CONNECTOR

—

+

—

+

L

R

E HD

+2. Lch —

3. Rch —4. Rch +

5. E —6. E +

INPUT SELECTOR

˚BUFFER

MOTOR DRIVE

MECHANISMCONTROL

RESETMAIN CPU

SPECTRUMANALYZER

REGULATORREGULATOR

PREAMP

MUTING

REGULATOR

MUTING

BUFFER

TONEAMP

ELECTRONICVOLUME

CONTROL

HEAD EQ AMPDOLBY B-TYPEPROCESSOR

REC/PBSW

BIAS OSC

TUNER

CD

TAPEPB

0 0 0 8.0

0 0 0 0 0

~~

0

0

00

00

0

0

0.711.2 11.2

11.5

11.2

12.2

12.2

12.2

TAPE SPEED ADJ.

BIAS ADJ.(Lch)

BIAS ADJ.(Lch)

0

0

0

0

0 00

4.9 4.60

0

0

0 0

23.10

0

0 0

0

0

0

0

0

0 0

0

0

0

0

00

0

0

0

0

2.4

7.44.0

4.0

1.2

00

2.5

2.4

4.0

4.0

4.0

1.3

1.3

2.6

2.6

1.2

4.0

3.9

4.0

4.0

4.1

0.3 8.

6

8.6

4.02.6

4.0

3.4

3.4

PB LEVEL ADJ.(Lch)

REC LEVEL ADJ.(Rch)

REC LEVEL ADJ.(Lch)

0.3

4.0

2.6

4.0

3.9

4.0

1.1

4.1

2.5

4.4

8.0

8.0

PB LEVEL ADJ.(Rch)

0.5

0.7

12.2

12.2000.5

0.7

1.00

0

9.0

9.0 9.0

9.0

4.7

0

0

0

0

0

0

4.7

9.0

9.09.0

-8.4

9.0

9.0

00

0

0 0

0

00

0 0 9.00

00

0

0

0

00

00

00

000

0

0

0

00

0

0-8.3

-8.4

4.7

9.0-8.4

9.0

9.0

4.4

9.04.44.4

4.44.4

4.4

2.34.6

4.4

4.44.44.4

4.44.4

4.4

00

4.4

4.3

4.2

4.3

4.2

4.4

4.4 4.4

4.3

4.4

4.3

4.2

4.4

4.2 4.2

4.4 4.

44.

44.

4

4.2

4.4

4.4

4.4

4.44.

4

12.300

0

0

00

-11.9

4.94.9

4.8

4.84.84.7

4.5

4.6

4.7

4.7

4.7

4.7

4.7

4.7

4.7 4.

64.

64.

74.

7

4.1

4.14.7

1.8

4.8

4.8

4.8

4.8

4.8

1.6

4.6

2.1

4.9

5.1

4.6

4.7

4.7

4.5

4.7

4.7

4.7 2.1 4.7

4.7

4.4

4.8

4.8

5.5

5.5

4.7

4.6

4.9

0

0 0

0 0 0

00 0

00

0

0

0 00

0

0

0

0

0 0

0

0

00

0

0

0

2.1

0

00

00

0

4.14.6

2.91.21.81.7

2.31.9

2.31.74.6

4.85.2

0.9

0.80.3

1.7

1.8

2.91.2

2.4

4.7

2.4

1.42.4

2.4

00

5.5

9.0

-11.9

0.7

12.3

0.7

0.4

4.9 4.9

9.0

9.6

9.6

0

4.8

5.5

12.4

12.4

5.5

2.1

5.2

0

0

0

0

0

00

0

0

0

0

0

12.4

9.7

9.7

0

13.0

6.1

6.1

0

0

0

00

0

-11.9-11.9

-11.9

12.3

0

00

4.9

4.7

~

~

~

~

~

4.7

9.0

-8.4 0

0

4.7

0

0

0000

000

0000

0

00

t

r

e

( 8.1

)

( 4.6

)

(0.1)(0.2)

(14.4)

(3.4)

(0)

(0)

(0)

(0)

(3.4) (4.9)

(15.0)(5.5)

(21.8)

(15.0)

(15.0)

(0)

(0)

(14.4)

(1.6)

( 4.6

) ( 0)

(0)

(4.6)

(0)

( 0.7

)

147

( 4.6

)

(0.6)

( 4.7

)

( 0)

( 0)

(4.8)

(3.0)

(2.0)

( 3.0

)

CASS IN CASS

CASS CASS

68

P72I-4

SAMEPAGEM-8

SAMEPAGEM-9

SAMEPAGE

N-8

P74H-6

P66L-2

SAME PAGEK-6

P70E-6

P70H-5

P73A-4

P73H-7

P73A-3

SAME PAGEB-9

P70 E-1

P72I-6

SAME PAGEA-7

SAME PAGEA-5

SAME PAGEA-6

A B C D E F G H

1

2

3

4

5

6

I J K L M N O

7

8

9

10

GX-700/GX-700VCD

SCHEMATIC DIAGRAM (GX-700VCD INPUT) The voltages are measured by LH tape at PLAY mode (no-signal condition)Only the voitages ( ) are at REC mode.

DOLBY NR OFF




IC3, 4 : TC4052BFDual 4 Channel Analog Multiplexers/Demultiplexers

INHIBIT00001

B0011X

A0101X

0x, 0y1x, 1y2x, 2y3x, 3yNONE

IC7 : LC75393EElectronic Volume Control

CC

B B

US

INT

ER

FA

CE

DE

CO

DE

R +

LA

TC

HE

S

RSBC2

RHP1

RHP2

RRECOUT10

RRECIN10

RRECOUT1

RCOM1

RH

RF2C1

RF2C2

RF2C3

RF1C1

RF1C2

RF1C3

RTIN

RSVROUT

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

LSBC2

LHP1

LHP2

LRECOUT10

LRECIN10

LRECOUT1

LCOM1

LH

LF2C1

LF2C2

LF2C3

LF1C1

LF1C2

LF1C3

LTIN

LSVROUT

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

RS

BC

1

RC

OM

2

R1d

BO

UT

R10

dBIN

R10

dBO

UT

RV

SS

CE

DI

CL

DV

SS

LVS

S

L10d

BO

UT

L10d

BIN

L1dB

OU

T

LCO

M2

LSB

C1

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

VC

OF

F

VC

ON

DIR

EC

T P

AS

S

DIR

EC

T P

AS

S

VC

OF

F

VC

ON

RS

VR

IN

RV

CO

UT

VD

D

RV

ref1

RV

ref2

RIN

VC

4

VC

3

VC

2

VC

1

LIN

LVre

f2

LVre

f1

MIC

IN

LVC

OU

T

LSV

RIN

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

IC5 : µPD4066BGQuad Analog Switch/Multiplexer

SWA

IN/OUT 1

OUT/IN 2

OUT/IN 3

IN/OUT 4

CONT B 5

CONT C 6

VSS 7

14 VDD

13 CONT A

12 CONT D

11 IN/OUT

10 OUT/IN

9 OUT/IN

8 IN/OUT

SWD

SWB

SWC

SIG/A

SIG/B

SIG/D

SIG/C

16

VDD6

INHIBIT

10A9B8VSS7VEE

12X0

14X1

15X2

11X3

1Y0

5Y1

2Y2

4Y3

LEVELCONVERTER

BINARY TO 1-OF-4DECODER WITH INHIBIT

SW

SW

SW

SW

SW

SW

SW

SW

13 X

3 Y

IC10 : BA15218NDual OP-Amp

–IN

1

2

+IN

1

3

–VC

C

4

+IN

2

5

–IN

2

6

OU

T2

7

+V

CC

8

OU

T1

1

–

+

–

+

IC1 : LB1641Motor Driver

23

P1

5IN 1

1GND

4 VZ

6 IN 2

OU

T 1

8

VC

C 2

10

OU

T 2

9

P2

INPUT LOGIC

PR

E D

RIV

ER

7

VC

C 1

IC2 : µPC1330HA2 ch Head Selector Switch

INVERTER

COMPARATOR

1

SW

R 1

2

GN

D

3

SW

P 1

4

CO

NT

5

GN

D

6

VC

C

9

SW

R 2

8

GN

D

7

SW

P 2

105HzBPF

VREF

BIAS

340HzBPF

1kHzBPF

3.4kHzBPF

DIF

10.5kHzBPF

PEAKHOLD

PEAKHOLD

PEAKHOLD

PEAKHOLD

PEAKHOLD

RES

RES

RES

RES

MPX

DEC

RES

REFFERENCE CURRENT

6

7

8

9

5

4

3

2

1

13

12

11

10

14

15

16

17

18BIASC

VREFC

BREF

N. C.

N. C.

DIF OUT

C IN

A IN

VCC

GND

A OUT

TEST

N. C.

N. C.

SEL

C

B

A

A – C

C

A

IC26 : BA3835S5-Band BPF and Peak Hold for Spectrum Analyzer

IC9, 11, 21 : µPC4570G2Dual OP-Amp

–+

OUT1

–IN1

–VCC

+VCC

OUT2

1

2

3

4 5

+IN1 –IN2

+IN2

–+

6

7

8

IC6 : CXA1897QDolby B-Type Noise Reduction System with Recording/PlaybackEqualizer

17 222019

REC EQCTL

REC EQCTL

GN

D

D PB IN1

NRSW

GND

AGC OUT1

VCC

10K40K

10dB

AM

P

IREF MUTE

36

D TC1

DR

OU

T1

RE

C IN

1

DE

CK

AB

A E

Q

B E

Q

RE

C O

UT

1

RE

C O

UT

2

SP

EE

D

FP

CA

L

GP

CA

L

RE

C IN

2

DR

OU

T2

VCC

RFC

AMS OUT

AMS GAIN

35

34

32

30

29

27

26

2512

24

D REC IN1

D IREF

GN

D

31

NR

D L OUT2

NR

AM

S

18 2115 1613 14

454648 47

RECEQ

RECEQ

11

10

9

8

7

6

AGC

IREF

AGC IN1

D PBIN2

MODE

AGC OUT2

D TC2

GND

IREF

VG

AGC TC

D REC IN2

REC MUTE

D L OUT2

AGC IN210K 40

K10

dBA

MP

5

4 33

3

2

1

44 43

GN

D

PB

OU

TB

1

PB

OU

TA

1

PB

FB

21

PB

FB

11

PB

INB

1

PB

INA

1

PB

INA

2

PB

INB

2

PB

FB

12

PB

FB

22

PB

OU

TA

2

PB

OU

TB

2

GN

D

GN

D

41 39 37

GN

D

GN

D

23

3840

28

42

Point e (Pin37 of IC8)V : 2V/div H : 20 µsec/divDC range 1 : 1 probe

Point r (Pin39 of IC8)V : 2V/div H : 50 nsec/divDC range 1 : 1 probe

Point t

CH1 : Collector of Q19 CH2 : Anode of D11

H : 0.5 sec/div DC range 1 : 1 probe

V : 2V/div (CH1)V : 2V/div (CH2)

(This waveform is not available by pushing the power switch ON and OFF.)

CH 1

CH 2

With the POWER ON,disconnect the A/C powercord. Reconnect the A/Cpower cord and the abovewaveforms will start.

Disconnect thepower cord fromthe AC outlet.

0V0V

1

2

3

4

5

6

7

8

9

10

11

12

13

1. R ¥ REC

2. METAL

3. F ¥ REC

4. CASS IN

5. CrO2

6. +SOL

7. SENSOR OUT

8. +5V SENSOR

9. PLAY SW

10. +MTR

11. —COM

12. MTR SPEED B

13. MTR SPEED A

MAIN PCB

—+BA

MABUCHIMTR

MECHA CHASSISPH TYPE (JST)

SOL

1

2

3

4

5

1. LOAD OUT (+)

2. LOAD IN (+)

3. LOAD OUT

4. COM

5. LOAD IN

LOADING PCB

PH TYPE (JST)

MTR

+

1. Lch

R / P HD

PH CONNECTOR

—

+

—

+

L

R

E HD

+2. Lch —

3. Rch —4. Rch +

5. E —6. E +

INPUT SELECTOR

˚BUFFER

MOTOR DRIVE

HEAD EQ AMPDOLBY B-TYPEPROCESSOR

MECHANISMCONTROL

REC/PBSW

RESET

MAIN CPU

SPECTRUMANALYZER

REGULATORREGULATOR

PREAMP

MUTING

REGULATOR

MUTING

BUFFER

TONEAMP

ELECTRONICVOLUME

CONTROL

BIAS OSC

TUNER

CD

TAPEPB

0 0 0 8.0

0 0 0 0 0

~~

0

0

00

00

0

0

0.711.2 11.2

11.5

11.2

12.2

12.2

12.2

TAPE SPEED ADJ.

BIAS ADJ.(Lch)

BIAS ADJ.(Lch)

0

0

0

0

0 00

4.9 4.60

0

0

0 0

23.10

0

0 0

0

0

0

0

0

0 0

0

0

0

0

00

0

0

0

0

2.4

7.44.0

4.0

1.2

00

2.5

2.4

4.0

4.0

4.0

1.3

1.3

2.6

2.6

1.2

4.0

3.9

4.0

4.0

4.1

0.3 8.

6

8.6

4.02.6

4.0

3.4

3.4

PB LEVEL ADJ.(Lch)

REC LEVEL ADJ.(Rch)

REC LEVEL ADJ.(Lch)

0.3

4.0

2.6

4.0

3.9

4.0

1.1

4.1

2.5

4.4

8.0

8.0

PB LEVEL ADJ.(Rch)

0.5

0.7

12.2

12.2000.5

0.7

1.00

0

9.0

9.0 9.0

9.0

4.7

0

0

0

0

0

0

4.7

9.0

9.09.0

-8.4

9.0

9.0

00

0

0 0

0

00

0 0 9.00

00

0

0

0

00

00

00

000

0

0

0

00

0

0-8.3

-8.4

4.7

9.0-8.4

9.0

9.0

4.4

9.04.44.4

4.44.4

4.4

2.34.6

4.4

4.44.44.4

4.44.4

4.4

00

4.4

4.3

4.2

4.3

4.2

4.4

4.4 4.4

4.3

4.4

4.3

4.2

4.4

4.2 4.2

4.4 4.

44.

44.

4

4.2

4.4

4.4

4.4

4.44.

4

12.300

0

0

00

-11.9

4.94.9

4.8

4.84.84.7

4.5

4.6

4.7

4.7

4.7

4.7

4.7

4.7

4.7 4.

64.

64.

74.

7

4.1

4.14.7

1.8

4.8

4.8

4.8

4.8

4.8

1.6

4.6

2.1

4.9

5.1

4.6

4.7

4.7

4.5

4.7

4.7

4.7 2.1 4.7

4.7

4.4

4.8

4.8

5.5

5.5

4.7

4.6

4.9

0

0 0

0 0 0

00 0

00

0

0

0 00

0

0

0

0

0 0

0

0

00

0

0

0

2.1

0

00

00

0

4.14.6

2.91.21.81.7

2.31.9

2.31.74.6

4.85.2

0.9

0.80.3

1.7

1.8

2.91.2

2.4

4.7

2.4

1.42.4

2.4

00

5.5

9.0

-11.9

0.7

12.3

0.7

0.4

4.9 4.9

9.0

9.6

9.6

0

4.8

5.5

12.4

12.4

5.5

2.1

5.2

0

0

0

0

0

00

0

0

0

0

0

12.4

9.7

9.7

0

13.0

6.1

6.1

0

0

0

00

0

-11.9-11.9

-11.9

12.3

0

00

4.9

4.7

~

~

~

~

~

t

4.7

9.0

-8.4 0

0

4.7

0

0

0000

000

0000

0

00

r

e

( 8.1

)

( 4.6

)

(0.1)(0.2)

(14.4)

(3.4)

(0)

(0)

(0)

(0)

(3.4) (4.9)

(15.0)(5.5)

(21.8)

(15.0)

(15.0)

(0)

(0)

(14.4)

(1.6)

( 4.6

) ( 0)

(0)

(4.6)

(0)

( 0.7

)

14 7

( 4.6

)

(0.6)

( 4.7

)

( 0)

( 0)

(4.8)

(3.0)

(2.0)

( 3.0

)

CASS CASS

CASS CASS

69

P72I-4

SAMEPAGEM-8

SAMEPAGEM-9

SAMEPAGE

N-8

P74H-6

P66L-2

SAME PAGEK-6

SAME PAGEA-7

SAME PAGEA-5

SAME PAGEA-6

P71E-6

P71H-5

SAME PAGEB-9

P73A-3

P73H-7

P73A-4

P71 E-1P71 B-1

P72I-6

A B C D E F G H

1

2

3

4

5

6

I J K

7

8

GX-700/GX-700VCD

SCHEMATIC DIAGRAM (GX-700 OPERATION)




IC810 : µPC4570HADual OP-Amp

VO1

2

–Vm1

3

+Vm1

4

VEE

5

+Vm2

6

–Vm2

7

VO2

8

VCC

9

VCC

1

1

– + –+

2

IC814 : YSS247-DYMERSION

AIL

CL

FC

L

FO

L

WL

TAL

TB

L

AO

L

AIR

AVDD

VREF

SW

AVSS

FO

R

WR

TAR

TB

R

AO

R

VREF

LOG

IC

COMPARATORS

TO SWITCHES

11

14

17

13

15

8 3 2 1 24 23 22

12 5 20 19 18

+1

+1

SWITCH SWITCH

SWITCHFILTER

FILTER

YMERSION TONE CONTROL

–1

SWITCH

SWITCH

SWITCH–1

+1

+1

CR

FC

R

10 7 6

IC815 : M66004MASPFL Driver

P1

18

17

DISPLAYCONTROLREGISTER

OUTPUTPORT(2BIT)

SERIALRECEIVECIRCUIT

DIGITAL OUTPUTCIRCUIT

DISPLAYCONTROLLER

CLOCKGENERATOR

P0

XOUT 20

XIN 21

CS 14

SCK 15

SDATA 16

RESET 13

DIG0012

61 DIG15

DIG1264

1 DIG11

SEG0059

23 SEG35

SEG2731

33 SEG26SEGMENTOUTPUTCIRCUIT

DISPLAY CODEREGISTER(8BITx16)

CGROM(35BITx160)

DE

CO

DE

R

CGRAM(35BITx16)

DE

CO

DE

R

CODE SELECT

CODEWRITE

RAMWRITE

CORD/COMMANDCONTROLCIRCUIT

MUTING

BUFFER

YMERSION

FLDRIVER

2.5

2.5

2.5

2.5 2.5

2.5

2.5

2.5

4.9

1.60

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

0

0

0.9

4.9 4.8

0.6

0

0

0

00

0

0

0

0 0

0

11.2

11.14.9

0.7

0.7

-10.8

0

0

0

0 0

00

5.3

5.5

4.8

4.8

4.8

4.2

4.2

5.5 5.5

4.0

3.3

-26.8

-21.4

-24.

8-2

4.8

-24.

8

-24.

8

-24.

8

4.8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

9

-25.

0

-25.

0

-25.

0

4.6

4.2 ~

~ ~ ~ ~ ~ ~ ~~

4.6

4.8

2.2

2.2 -2

6.8

0

-24.

8

-24.

8

-21.

0

-21.

0

-25.

0

-25.

0

-25.

0

-24.

9

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

-21.

0

-21.

0

7 98

2

5

6

4

3

70

P68H-1

P68G-9

P68H-9

A B C D E F G H

1

2

3

4

5

6

I J K L

7

8

GX-700/GX-700VCD

SCHEMATIC DIAGRAM (GX-700VCD OPERATION)




IC802, 806, 810 : µPC4570HADual OP-Amp

VO1

2

–Vm1

3

+Vm1

4

VEE

5

+Vm2

6

–Vm2

7

VO2

8

VCC

9

VCC

1

1

– + –+

2

IC814 : YSS247-DYMERSION

AIL

CL

FC

L

FO

L

WL

TAL

TB

L

AO

L

AIR

AVDD

VREF

SW

AVSSF

OR

WR

TAR

TB

R

AO

R

VREF

LOG

IC

COMPARATORS

TO SWITCHES

11

14

17

13

15

8 3 2 1 24 23 22

12 5 20 19 18

+1

+1

SWITCH SWITCH

SWITCHFILTER

FILTER

YMERSION TONE CONTROL

–1

SWITCH

SWITCH

SWITCH–1

+1

+1C

R

FC

R

10 7 6

IC815 : M66004MASPFL Driver

P1

18

17

DISPLAYCONTROLREGISTER

OUTPUTPORT(2BIT)

SERIALRECEIVECIRCUIT

DIGITAL OUTPUTCIRCUIT

DISPLAYCONTROLLER

CLOCKGENERATOR

P0

XOUT 20

XIN 21

CS 14

SCK 15

SDATA 16

RESET 13

DIG0012

61 DIG15

DIG1264

1 DIG11

SEG0059

23 SEG35

SEG2731

33 SEG26SEGMENTOUTPUTCIRCUIT

DISPLAY CODEREGISTER(8BITx16)

CGROM(35BITx160)

DE

CO

DE

R

CGRAM(35BITx16)

DE

CO

DE

R

CODE SELECT

CODEWRITE

RAMWRITE

CORD/COMMANDCONTROLCIRCUIT

(L+R)/2 L R STEREO

MIC SW

µ–COM I/FPHASE

SHIFTERSURROUND

MAIN LOGIC

ECHOF.BVOL

16kbitSRAM

MCLKALC

MICVOL MIC

VOLALC1/2Vcc

DAT

A

CLO

CK

LAT

CH

PS

2

PS

1

VC

FIL

LOU

T

RO

UT

RIN

2

LIN

2

RIN

1

LIN

1

VO

L IN

LPF

2OU

T

LPF

2IN

2

LPF

2IN

1

DA

INTO

UT

DA

INT

IN

DA

CO

NT

VC

C

GN

D

VCC GND

42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

MIC

SW

MC

LKC

ON

T

VA

LC

MIC

1IN

ALC

1

MIC

1NF

IN

MIC

1OU

T

MIC

1VO

LIN

MIC

2IN

ALC

2

MIC

2NF

IN

MIC

2OU

T

MIC

2VO

LIN

MIC

OU

T

LPF

1IN

1

LPF

1IN

2

LPF

1OU

T

AD

INTO

UT

AD

INT

IN

AD

CO

NT

RE

F

ECHOVOL

LPF D/A

LPF A/D

IC801 : M65853FPMic Amp with Digital Echo

YMERSION

MIC MIXINGDIGITAL ECHO

BUFFER

MUTING

BUFFER

FL DRIVER

0

0

1.0

0.1

4.7

1.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5 2.5 2.

5

2.5

2.5

2.5

5.0

0

0

2.5

2.5

2.5

2.5 2.

5

2.5

2.5

2.5 2.

5

2.5 2.

5

2.5

2.5

2.5 2.5 0.5

2.5

-100

0

00

0 0

9.9

9.9

0

0

0

0

0

00

-10.0

0

00

0

0.7

0.7

5.00

0

0

0

0

0

0

12.2

11.1

-11.2

5.0 4.8

0.9

0.6

0

0

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

5.0

1.60

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

0

0

0

0 0

00

5.3

5.5

4.8

4.8

4.8

4.2

4.2

5.5 5.5

4.0

3.3

-26.8

-21.4

-24.

8-2

4.8

-24.

8

-24.

8

-24.

8

4.8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

9

-25.

0

-25.

0

-25.

0

4.6

4.2 ~

~ ~ ~ ~ ~ ~ ~~

4.6

4.8

2.2

2.2 -2

6.8

0

-24.

8

-24.

8

-21.

0

-21.

0

-25.

0

-25.

0

-25.

0

-24.

9

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

-24.

8

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

-21.

0

-21.

0

56

7

3

98

23

45

7

6

42

1

8

897

6

4

32

5

71

P69 G-1

P69H-1

P69G-9

P69H-9

A B C D E F G H

1

2

3

4

5

6

I J K

7

8

GX-700/GX-700VCD

SCHEMATIC DIAGRAM (GX-700/GX-700VCD EFFECT)




POWER AMP

VIDEO SW & AMP

VIDEO AMP

DOLBY PROLOGIC DECODER

LEVEL CONTROL

0

00

23.5

-24.1

00

002.1

-0.8

-23.9

3.9

12.4

3.9

0 0.1

0.1

6.9

12.4

6.2

GX-700VCD ONLY

6.9

6.9 6.9

7.9

7.90

0

4.5

4.5

4.5

4.5 4.5

4.5

0

4.6

4.5

0.1 4.

2

0

4.2

0

4.2

0

4.5

4.55.2

5.2

4.5

4.5

4.3

4.3

4.5

4.5

4.4

5.2

4.5

5.24.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5 9.

0

4.5

4.5

4.5

4.5

4.5 4.

5

4.5

4.5

2.5

2.4

5.0

4.5

4.5

4.5

4.5

4.5

4.5

4.5

0

0.7

2.5

9.0

4.5

0

00

0

0 0

0

0

0

9.0

9.0

9.0

9.0

0

-8.5

0

12.3

0.1

0

0

0.1

-12.1

0

0

00

0

-12.0

0

00.9

12.2

00

00

00

00

00

4.9

-12.

0

012

.2

012

.2 04.

6

-12.0

00

0

12.200.2

0

2.50

4.9

0

9.0

0

0

0

9.0

0.70

0

i

7

4

3

9 2

6 5

8

98

4

32

56

7

7

6 5

83

49 2

IC10 : LC7536-YElectric Controlled Volume

IC7 ~ 9 : µPC4570HADual OP-Amp

VO1

2

–Vm1

3

+Vm1

4

VEE

5

+Vm2

6

–Vm2

7

VO2

8

VCC

9

VCC

1

1

– + –+

2

IC11 : LM1875TPower Amp

+IN

–IN

–VE

E

OU

TP

UT

+

VC

C

1 2 3 4 5

–

IC1 : LA7956Video Amp

DRIVER

VIDEOOUT

1

A

2

B

3

VIN1

4

GND

5

VIN2

6

VCC

7

VIN3

8

VIN4

9

CONTROL 4-INPUT 1-OUTPUTVIDEO SWITCH

6 dBAMP

16

VDD

LOG

IC L

EV

EL

CO

NV

ER

TE

R

12 OX

7

VEE

6INH

OUT C IN

13 IXOUT C IN

2 OYOUT C IN

1 IYOUT C IN

5 OZOUT C IN

3 IZOUT C IN

4 Z-COMMON

15

14 X-COMMON

Y-COMMON

9C

10B

11A

8

VSS

INHIBIT(Pin 6)

LLLLLLLLH

CONTROL INPUTS “ON” CHANNEL0X (Pin 12), 0Y (Pin 2), 0Z (Pin 5)1X (Pin 13), 1Y (Pin 1), 1Z (Pin 3)

0X, 0Y, 0Z1X, 0Y, 0Z0X, 1Y, 0Z1X, 1Y, 0Z0X, 0Y, 1Z1X, 0Y, 1Z0X, 1Y, 1Z1X, 1Y, 1Z

NOTE

C(Pin 9)

LLLLHHHH*

B(Pin 10)

LLHHLLHH*

A(Pin 11)

LHLHLHLH*

* Don’t Care

IC2 : HD14053BPTriple 2 Channel Analog Multiplexers/Demultiplexers

IC5 : LV1035MDolby ProLogic Decoder

21 3 4 5 6 7 8 9 10 11 12 13 14 15 16

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

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

32

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

L–BPF3

L–B

PF

2

L–B

PF

1

R–I

N

L–IN

C–T

RIM

DC

–CU

T

CM

OD

E–

CA

P

GN

D

NS

–BP

F1

NS

–BP

F2

OS

C1

CLK

DA

TA

EN

AB

LE

DA

TA

CLK

VS

S

R–B

PF

2

R–B

PF

1

Sch

DC

–CU

T

Cch

DC

–CU

T

Rch

DC

–CU

T

Lch

DC

–CU

T

VR

EF

VC

C

C–O

UT

S–O

UT

R–O

UT

L–O

UT

AC

–GN

D

L–IN

R–I

N

S–I

N

DC–CUT

R RECT

DC–CUT

L RECT

VLR–TH

VLR–1

VLR–2

VCS–2

VCS–1

VCS–TH

L+R RECT

DC–CUT

L–R RECT

DC–CUT

R–BPF3

OSC

OSC

VDD

A/D

NS

D/A

DC–CUT

DC–CUT

L–MIX–OUT

R–MIX–OUT

S–OUT

ANALOG–GND

NR–IREF

NR–DET

VCC

DELAY–OUT

BP

FB

PF

RE

CT

RE

CT

RE

CT

RE

CT

PB

LOG

DIF

FLO

GD

IFF

DA

TA

–DE

C

NO

ISE

–GE

N

VC

R

VC

R

VC

R

VC

R

VC

R

PB

VC

RV

CR

VC

R

VO

L

VD

D

VO

L

R L

R L

C R L

R L

DE

VC

TR

IM

CT

RIM

13P

IN

20P

IN19

PIN

OS

C

NO

ISE

–FIL

BF

L–C

ON

TC

H–C

ON

T

VO

L/M

UT

E

C–M

OD

E

AO

M

S

SM

OD

E

ST

RIM

DC

–CU

T

SR

AM

S

S

L

S

R

S

L

R

AO

M-C

ON

T

IN–F

ILT

ER

OU

T–F

ILT

ER

B–N

R

L5dB IN

CO

NT

RO

L

S

1

12

CE 19

CLK 17

DI 18

LATCH

LEVEL SHIFT

SHIFT REGISTER

L CT1 3

L CT2 4

LVM 9

5

L5dB

OU

T

6

L1dB

IN

8

L1dB

OU

T

R5dB IN30

28

27

22

23

R1d

B O

UT

25

R1d

B IN

26

R5d

B O

UT

R CT1

R CT2

R VM

13 VDD

21 VCC

14 VSS

10 VEE

2 7 11 15 16 20 24 29

NC

Point i (Pin32 of IC5)V : 2V/div H : 0.1 µsec/divDC range 1 : 1 probe

0V

72

SAME PAGEI-8

P67K-3

P73 H-8

P68 A-4

P69 A-4

P66 L-3

P67 K-3

P68 E-1

P69 E-1

SAME PAGEA-2

A B C D E F G H

1

2

3

4

5

6

I J K L

7

8

GX-700/GX-700VCD

SCHEMATIC DIAGRAM (GX-700/GX-700VCD MAIN)




IC201 : STK496-620Y3 Channel AF Power Amp

REGULATOR

REGULATOR

POWER AMP

MUTING

PROTECTIONPOWERSUPPLY

SUBPOWER SUPPLY

FAN DRIVE

-27.3

-51.8

-27.9

0

-12.7

0

-12.7

-12.1 -23.9

12.6 23.4

13.0

13.0

0

12.5

-27.3

23.1

13.0

0

13.0

-0.1

-0.1

23.5

15.5

0

23.5

15.5

01.247

.7

0

51.8

-46.

7

0

0

0.6

0

0

0.6

-0.1

-0.1

-47.

7

-23.

6

-23.

6

-23.

6

0

-16.0

-24.1

-16.

0

-24.

1

-52.

0

0

0

0.6

-0.1

-0.1

0

-23.

6

0

0

51.5

0

0

51.60

0

0

0

0

0

51.6

0

0

51.8

51.6

-0.5 0

0

0

4.9

4.9

0

12.4

12.5

11.8

0

00.6

-0.9

-24.1

-23.4

-24.2

-24.1

-23.4

-24.2

51.8

-52.0

23.5

-24.1

11.6 0

AC6.2

AC10.6

AC80.8AC38.2

0

0

0.7

12.4

12.4

12.9

30.2

12.9

0

-0.1

-24.0

0.1

-24.0

0.9

30.2

0

AC28.7

18

19

20

R8

R2 R5

R32

R6

TR6

R4

R9

C1

TR3

TR5

TR4

TR2TR1

TR7

TR8

TR9

TR11

TR12

TR13

TR14

TR25

TR26

TR18R14

D3

D4

R24 TR30

R15

R19

R29

R16

R25 R26

R13

R18

R17

TR15

TR16

TR28

TR27

TR23

TR21 TR22

TR22

TR32

TR20

TR33 TR34

TR24

TR35 TR36

C3

R12

TR10TR52

R50

COMPARATOR

COMPARATOR

R40

SUB

R7

R3 D1

D2

D40 D41 D42

D50 D51 D52

D53

D43

315212217

12 13 16 10 14 24 23 26

1

9

5

4

2

7

6

8R22

C5

C2

TR17

TR19

R25

R23

R27

TR31

TR29

11

25

TR42

73

P66 L-2

P67 K-2

P68 K-5

P69 K-5

P68 K-4

P69 K-4

P72 D-4

P68 K-5

P69 K-5

A B C D E F G H

1

2

3

4

5

6

I J K

7

8

GX-700/GX-700VCD

SCHEMATIC DIAGRAM (GX-700/GX-700VCD TUNER) Each voltage represents the voltage when receiving FM (stereo) signal and the voltage in the parentheses ( ) is the voltage when receiving AM signal.




PK1 : TFFJ2U515A (V4299000) U, C, R, T, L models

FM

IN

L–O

UT

R–O

UT

30 29 28

GND VCC

MUTE

ALC REG

AGC

DETAM IF

FM IF

S–CURVE

BUFF

AMOSC AM

MIX

FMDET

AMRF.AMP

SDCOMP

FMS–METER

AMS–METER

TUNINGDRIVE

STEREODRIVE

AM/FMIF–BUFF

27 26 25 24 23 21 2022

DECODERANTI–BIRDIE

19 1718 16

1 2 3 4 5 6 7 8 10 119 12 13

P–DETø

VCO304KHZ

FF38K

STEREOSW

FF2π

19KFF

019KPILOTDET

14 15

IC1 : LA1838AM/FM Tunner

IC2 : LC72131MPLL Controller

POWERON

RESET

XIN q!8 PD

AIN1

@2XOUT

!6FMIN

AMIN

rDI

tCL

yDO

!7VDD

@0 AOUT1

!9

!2 IFIN

!5

eCE

@1VSS

REFERENCEDIVIDER PHASE DETECTOR

CHARGE PUMP

UNLOCKDETECTOR

UNIVERSALCOUNTER

SWALLOW COUNTER1/16,1/17 4BITS

1/2

12BITS PROGRAMMABLE

DIVIDER

DATA SHIFT REGISTERLATCH

u i o !0 !1 !3

C2BI/F

BO

1

BO

2

BO

3

BO

4

IO1

IO2

IC4 : LC72720NMRDS Decoder & Controller

7

4

1

5

3

8

6

2ANT

VT

IF OUT

GND

VCC

F OUT

ANT

GND

C1956p

C2012p

C124p

C22OPEN

R233

R310k

R5100k

J30R4

330k

C23p

C64p

C847p

R1OPEN

C3OPEN

C5OPEN

J40

TR1

L7 L1

L3 L4 L5L2

2.2µ

C21100p

C260.01µ

C240.01µ

D1

C41200p C7

560p

TR2T1

TR3

C27OPEN

C92p

L6

C170.01µ

R1133

C10OPEN

D2

C110.01µ

C1212p

R64.7k

C23OPEN C16

18p

J10

R7100k

C156p

TR4

C1333p

C1422p

R91.8k

R10180

C180.01µ

J20

R8180

PK1 : TFFJ4E515A (VU134500) A, B, G models

8

4

1

5

3

7

6

2ANT

VT

IF OUT

GND

VCC

F OUT

GND

GND

C19OPEN

C21OPEN

C22680p

R233

R310kR12

100k

R5100k

R41M

C24p

C256p

C204p

C64p

C847p

R1100k

C32p

C52p

TR1

L7

L3

L1

L4L5

2.2µL2

2.2µ

C260.01µ

C11p C24

0.01µ

D1

D3

C4680p

C7100p

TR2T1

TR3

C27OPEN

C92p

L6

C170.01µ

R1122

C10OPEN D2

C110.01µ

C1212p

R64.7k

C230.01µ

C1610p

J10

R7100k

C1533p

C2818p

TR4 TR5

C1333p

C1422p

R91k

R10150

C180.01µ

J20

R8180 R13

330kR14180

PK1 : TFFJ2J541A (VV207900) J model

7

4

1

5

3

8

6

2ANT

VT

IF OUT

GND

VCC

F OUT

ANT

GND

C1968p

C2027p

C122p

C22OPEN

R233

R310k

R5100k

J30R4

330k

C25p

C610p

C847p

R1OPEN

C310p

C5OPEN

J40

TR1

L7 L1

L3 L4 L5L2

2.2µ

C21100p

C260.01µ

C240.01µ

D1

C4680p C7

560p

TR2T1

TR3

C27OPEN

C92p

L6

C170.01µ

R1168

C10OPEN

D2

C110.01µ

C1215p

R64.7k

C23OPEN C16

18p

J10

R7100k

C156p

TR4

C1333p

C1422p

R92.2k

R10180

C180.01µ

J20

R8180

+

REFERENCEVOLTAGE

57kHzbpf

(SCF)

CCB

TEST

PLL(57kHz)

ANTIALIASINGFILTER

SMOOTHINGFILTER

RAM(24 BLOCK DATA)

ERROR CORRECTION(SOFT DECISION)

SYNC/ECCONTROLLER

SYNCDETECT-1

DATADECODER

CLOCKRECOVERY(1187.5Hz)

MEMORYCONTROL

OSC/DIVIDER

VREF

CLK(4.332MHz)

SYNCDETECT-2

VDDA

VSSD

VDDD

RDS-ID

SYNC

SYR

VSSA

MPX IN

DOCLDI

CE

T1T2T3T4

T5

T6

T7

X IN

VR

EF

FL

OU

T

C IN

X O

UT

3 14

15

19

18

24

1 5 6

4

2

20

21

22

23

78910

11 16 17 13 12

16 15 14 13 12 11 10 9

1 2 3 4 5 6 7 8

UNLOCKIF

AMPAGC VCO

1/8VCA

1/18K

STLEDPILOT

DET

LIMITAMP

PILOTDET LPF2

PILOTin

PILOTout

MODESW.

STTUNIND.

STIND. VCC

LOCK IFin

AGC ROUT LOUT LPF1 VCO GND

PHASE COMP

ENVELOPE DET

ERRORAMP I DEM

Q DEM

PHASECOMP

MATRIX

IC3 : TA2040AFAM Stereo Demodulater

Point u (Pin12 of IC4)V : 2V/div H : 0.1 µsec/divDC range 1 : 1 probe

Point y (Pin20 of IC2)V : 2V/div H : 0.1 µsec/divDC range 1 : 1 probe

0V 0V

RDSDECODER

AMSTEREODEMODULATER

FM/AM TUNER

PLL

AM

FM

TUNER(Lch)

0.9

9.1

10.1

0

12.2 12.4

0

0.1

3.5

10.1

3.5

3.5 0

2.0

3.5

3.5

3.6

3.6 0 0.

1

3.1

2.8

3.3

3.3

4.2

4.2

4.2

4.2

0 0.1 4.

3 0 3.7

9.0

9.1

10.1

2.3 1.

4

9.1 12.3

0.5

0.1

9.112.3

4.9 12.4

5.6

5.6

0

0

0

0

2.4

4.9

1.0

1.0

4.1

0

2.4

12.3

0

12.3

4.9

4.7

0.1

0

2.3

0

y

0 0

0.1

4.7

4.9

2.4

2.4

4.8 0 2.4 2.4 0 0 2.4

2.3

4.8

0

u

VT

87.5MHz

98.1MHz

108.0MHz

2.0V

4.1V

7.1V

531MHz

1080MHz

161MHz

1.4V

4.9V

6.9V

FM

AM

(0) (0)

(0)

(12.4)

(0.1)

(0.5)

(4.7)

(0.1)

(0)

(2.3)

(0)

(2.4)

(0)

(4.9)

(1.0)

(1.0)

(4.9)

(0)

(2.4)

(0)

(0)

(0)

(0)

(10.3)

(12.4)

(0) (12.4)

(3.5

)(1

.9)

(3.5

)

(3.5

)

(3.5

)

(3.5

)

(1.2

)(1

.3)

(3.1

)

(2.8

)

(3.2

)

(3.2

)

(4.2

)

(4.2

)

(4.2

)

(4.2

)

(10.

3)

(3.5

)

(3.5

)

(0)

(0) (10.

1)

(10.

3)

(2.6

)

(1.4

)

(0)

(2.6

)

(0)

(6.0

)

(5.9

) (0.6) (0)

(10.1)

(4.8)

(0)

(2.4

)

(2.4

)

(4.8

) (0)

(2.4

)

(0)

(0) (2

.4)

(0)

(4.8

)

(2.3

)

(0)

(0)

(4.7

)

(0.1

)

(5.6)

(0)

(5.6)

(12.4)(4.9)

(0.1) (0.6)

V429900 V429900

4.3K

4.3K

74

P68 A-8

P69 A-8

A B C D E F G H

1

2

3

4

5

6

GX-700/GX-700VCD

109 110

EXPLODED VIEW (Loading Unit) EXPLODED VIEW (Cassette Deck Mech. Unit)

Ref.No. PART NO. Description Remarks Markets

New Parts*

* AAX07650 CASSETTE DECK MECH. UINT F511638* 3 AAX07550 PLATE HD BLOCK F513831* 4 AAX07450 MTR MAIN BLOCK F525327* 5 AAX07470 PCB CONTROL BLOCK F567626* 6 AAX07490 CLUTCH ASS’Y BLOCK F522037* 25 AAX07570 BELT MAIN FF19H11* 29 AAX07500 CLUTCH ASS’Y BLOCK F522048* 31 AAX07530 ROLLER PINCH BLOCK R F514129* 32 AAX07540 ROLLER PINCH BLOCK L F514130* 42 AAX07560 BELT F/R FF18W12

50 AX623570 HEAD BASE FC61K2851 AX622210 PLATE, SLIDE FC61L1752 CX677140 CAM, GEAR FD52Y2053 CX677130 LEVER F/R FC62G1254 AX623590 LOCK LEVER FD53D1955 CX679800 PULLEY, CLUTCH FD53F14

Ref.No. PART NO. Description Remarks Markets

New Parts*

AAX07660 LOADING UNIT F511630* 3 AAX07480 HOLDER CST BLOCK F527078* 4 AAX07460 MTR REEL BLOCK F564313* 5-1 AAX07510 SWITCH UE15S14* 6-1 AAX07520 SWITCH UE18P21* 15 AAX07580 BELT LOADING FF19L12

A B C D E F G H

1

2

3

4

5

6

GX-700/GX-700VCD

Grease to be suppliedThe same grease as that originally used is notavailable but a substitutive grease is supplied in-stead. When using this grease, however, make sureto wipe off the attached grease thoroughly beforeapplying the new one.

Grease originally used Grease to be supplied

EM50L FLOIL G-351 P/NO. TX913160

Molykote 6166 FLOIL G-351 P/NO. TX913160

MX-2400 FLOIL G-351 P/NO. TX913160

GREASE APPLICATION DIAGRAM (CD Mechanism)

111 112

A B C D E F G H

1

2

3

4

5

6

GX-700/GX-700VCD

GX-700 REMOTE CONTROL TRANSMITTER SCHEMATIC DIAGRAM

R12.2Ω

KI/O6

KI/O7

S0

REM

VDD

X OUT

X IN

VSS

KI/O5

KI/O4

KI/O3

KI/O2

KI/O1

KI/O0

KI3

KI2

KI1

KI0

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

IC1:

µPD

64G

S–4

70

C147µF

3(V)

Q1

IED1

K5

K9

K13

K25

D1

D2

D3

D4

RESET

S1/LED

K1

K6

K2

K10

K14

K26

K7

K15

K27

K3

K8

K12

K16

K4

K37 K38 K39

K41 K43 K44

K49

K45

K53

K57

K33

K42

K54

K58

K34

K40

K48

K52

K56

K36

K47

K51

K55

K59

K35

X1

3.64MHz

12345678910121314151625262733343536

2 23 34 45 5PROG (CD) BR. TIME (CD) CEDIT (CD) D+10 EREPEAT (CD) RANDOM (CD)TUNERT E (CD)Y R (CD)A (CD)L (CD)DIRECTION (TAPE)VOLUME ,VOLUME .: REC/PAUSE (TAPE)E (TAPE)R (TAPE)A (TAPE)

78787878787878787878787878787878787878787878

121314150B08091A0C074B04030102D81E1F46454441

FUNCTIONKeyNo.

CUSTOM(HEX)

DATA(HEX)

W (TAPE)CENTER/REAR/DELAYTESTPROGRAMBASS BOOSTMUSICLEVEL .LEVEL ,INPUT B / I POWERSLEEP INPUT N1 16 67 78 89 NPRESET0 BPRESETTIME (CD) AMODE (CD)DISC SKIP

373839404142434445474849515253545556575859

787878787878787878787878787878787878787878

42485F5B855A54535E0F4F401116171819100A5D0D

FUNCTIONKeyNo.

CUSTOM(HEX)

DATA(HEX)

GX-700VCD REMOTE CONTROL TRANSMITTER SCHEMATIC DIAGRAM

123456789

10121314151617181920212223242526

2 23 34 45 5PROG (CD) BR. TIME (CD) CEDIT (CD) D+10 EREPEAT (CD) RANDOM (CD)TUNERT E (CD)Y R (CD)A (CD)L (CD)TIME INDEX Q (VCD) TIME INDEX W (VCD) RETURN (VCD)SELECT (VCD): REC/PAUSE (TAPE)E (TAPE)R (TAPE)A (TAPE)W (TAPE)VOLUME ,

78787878787878787878787878787878787878787878787878

121314150B08091A0C074B0403010282818B8A46454441421E

FUNCTIONKeyNo.

CUSTOM(HEX)

DATA(HEX)

VOLUME .KARAOKEINTRODIGESTDIRECTIONKEY/ECHOTESTYMERSION BASE BOOSTMUSICLEVEL . b

LEVEL , m

INPUT B / I POWERSLEEPINPUT N1 16 67 78 89 NPRESET0 BPRESETTIME (CD) AMODEDISC SKIP

27333435373839404142434445474849515253545556575859

78787878787878787878787878787878787878787878787878

1F5C8384D8485F5B855A54535E0F4F401116171819100A5D0D

FUNCTIONKeyNo.

CUSTOM(HEX)

DATA(HEX)

R12.2Ω

KI/O6

KI/O7

S0

REM

VDD

X OUT

X IN

VSS

KI/O5

KI/O4

KI/O3

KI/O2

KI/O1

KI/O0

KI3

KI2

KI1

KI0

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

IC1:

µPD

64G

S–4

70

C147µF

3(V)

Q1

IED1

K5

K9

K13

K17

K21

K18

K22

K19

K23

K20

K24

K25

D1

D2

D3

D4

RESET

S1/LED

K1

K6

K2

K10

K14

K26

K7

K15

K27

K3

K8

K12

K16

K4

K37 K38 K39

K41 K43 K44

K49

K45

K53

K57

K33

K42

K54

K58 K59

K34

K40

K48

K52

K56

K47

K51

K55

K35

X1

3.64MHz

J1

113 114

CD HEAD AMP REGULATOR - ePanorama.net | Audio Gx-700vcd... · cross + 25 teout 26 te ... regulator level shift 3 ... cd head amp spc & dac act motor drive motor drive cd cpu lpf muting

Documents