background image

4-3

4-3

CS 46 176

Laser supply

CDM12.3

BLC

DISC DRIVE

HF-Preamplifier

D

E

C

F

B

A

PC74HCU04N

F

E

D

C

B

A

1

7

8

14

Photodiode-array

R2

R1

D3

D2

D1

+Vreverse

Monitor

Laser

Vref

FROM/TO

SUPPLY/CONTROL PART

TO AUDIO PART

FROM/TO SERVODRIVER PART

TDA1308

8

5

4

1

1

4

5

8

TDA1308

R2

R2

R1

R1

D3

D3

D2

D2

D1

D1

R2

R1

D3

D2

D1

+REF

to 7830 pin62

7880 I11

7880 H 8

7880 H 7

7880 I 6

7830 D12

7820 K20

7820 L17

7800 C 6

7520 C 8

5800 J14

3992 H11

3991 I10

3990 I10

3989 I 9

3988 I 9

3987 I 8

3985 I 8

3984 I 7

3983 H 7

3982 H 6

3981 I 6

3980 I 5

3975 C 4

3974 K7

3973 H 8

3905 C 5

3904 D 7

3903 D 6

3882 L17

3865 B15

3864 B16

3863 B17

3862 B16

3861 B16

3860 B15

3847 G12

3841 J13

3840 H12

3833 D12

3832 I12

3831 H12

3830 D 4

3827 I18

3826 D18

3825 C18

3821 L17

3820 I19

3819 I19

3818 J19

3817 J19

3816 J19

3815 J19

3814 K19

3813 K18

3812 I14

3811 E 9

3810 E 9

3809 E 9

3808 G11

3807 F11

3806 F11

3805 E11

3804 E11

3803 E11

3800 D 6

3152 C 8

3151 D 7

3150 C 8

2989 J 5

2988 I 5

2987 I 5

2986 I 5

2985 I12

2984 I11

2983 H 8

2982 H 7

2981 C 5

2980 J10

2979 H 6

2902 B 6

2845 J13

2838 D12

2837 D12

2836 J13

2835 I12

2834 H12

2833 K7

2831 D 4

2827 I18

2826 D18

2825 C18

2824 C15

2821 L16

2820 I20

2819 I19

2818 J20

2817 J19

2815 K19

2814 L19

2813 L18

2811 F 9

2810 F10

2809 F10

2808 F12

2807 F11

2806 F11

2805 G12

2804 G11

2803 G11

2802 G10

2801 G10

2800 D 5

1800 C 3

7901 C 5

7880 I 7

7880 I 9

4

5

1

6

7

8

9

10

11

12

13

14

15

2

16

17

18

19

20

21

22

3

J

I

H

G

M

F

E

D

C

B

A

L

K

J

I

H

G

M

F

E

D

C

B

A

L

K

4

5

1

6

7

8

9

10

11

12

13

14

15

2

16

17

18

19

20

21

22

3

2837

33n

2811

1n

2810

470p

2809

470p

47p

2980

2985

2n2

2984

15p

2983

47p

2982

47p

2979

150p

2986

82p

2987

82p

2988

150p

2989

27p

100n

2826

2824

33n

2825

100n

100n

2827

2808

220p

2807

220p

2806

220p

2805

220p

2804

220p

2803

220p

47n

2834

47p

2835

22n

2836

1n5

2814

3n3

2813

3n3

2817

2820

33n

330n

2819

1u

2821

2801

1n5

2802

560p

2902

1u

2981

100n

18n

2815

3n3

2818

1u

2833

3811

39k

3810

82k

3809

82k

10k

3865

10k

3150

10k

3152

10k

3151

8k2%

3882

22k

3831

3k3

3992

3k3

3991

3k3

3990

3k3

3988

22k

3989

10k

3973

3k3

3987

10k

3983

22k

3985

6k8

3984

2k2

3980

47k

3982

470k

3981

22k

3863

22k

3862

22k

3864

22k

3861

22k

3860

0R

3840

22R

3827

3826

22R

3803

10k

3808

10k

3807

10k

3806

10k

3805

10k

3804

10k

390k

3847

22R

3833

1M

3812

1k

3832

2k2

3818

3814

2k2

2k2

3813

2k2

3817

1k

3800

3k3

3820

1k

3819

4R7

3825

8k2%

3821

22R

3841

10k

3903

10k

3904

100

3905

4R7

3975

100R

3830

3816

330

220

3815

470

3974

DA

DA

DA

HF

HF

HF

SD

DA

HF

HF

SD

SD

DA

SD

SD

HF

SD

SD

SD

DA

HF

HF

HF

HF

HF

HF

DA

DA

DA

DA

DA

DA

DA

HF

HF

SD

SD

SD

SD

SD

SD

DD

HF

HF

HF

SD

SD

HF

SD

CSTCS 8.46 MHz

5800

SCLK

DR_REF

SLIDE_IN

TRACK_IN

FOCUS_IN

DM_IN

SILD

RA

PORES

SDA

SCL

STATUS

INNERSW

+1.2

+3.5

+3.5

+3.5

+3.5

+3.5

+1.2

+3.5

+3.5

+3.5

+3.5

+3.5

+3.5

+3.5

+3.5

BC858

7520

2u2

2831

2838

47u

2u2

2800

2845

47u

7800

TDA1308

4

2

3

1

TDA1308

7820

8

6

5

7

TDA1308

7820

2

1

3

4

7880

1

2

74HCU04

7880

13

12

74HCU04

7880

3

4

74HCU04

7880

5

6

74HCU04

7880

11

10

74HCU04

7880

9

8

74HCU04

7901

BC848

INNERSW

FM-B

1800

1

2

3

4

5

6

7

8

9

10

SAA7376

7830

10

11

12

13

14

15

16

17

18

19

1

20

21

22

23

24

25

26

27

28

29

2

30

31

32

33

34

35

36

37

38

39

3

40

41

42

43

44

45

46

47

48

49

4

50

51

52

53

54

55

56

57

58

59

5

60

61

62

63

64

6

7

8

9

PINS

MICROPROCESSOR

V1...VV5

INTERFACE

DETECT

PEAK

KILL

MOTO2

MOTO1

WCLK

VDD2P

SCLK

SBSY

SFSY

VSS2

MISC

DATA

RCK

SUB

KILL

V5

V4

V3

VSSA1

VSSA3

SELPLL

HFIN

Vref

D3

D2

D1

VSSA2

VRH

IREFT

R2

R1

D4

VRL

VDDA1

ISLICE

DIGITAL

DEMOD.

CORRECTION

ERROR

PROC.

PRE-

EFM

PLL

CONTROL PART

CONTROL

FUNCTION

SRAM

FLAGS

TIMING

CONTROL

MOTOR

INT.

EBU

ADDR.

RAM

VERSATILE

OUTPUT

STAGES

FO

SILD

SL

RAB

TEST3

SCL

SERIAL DATA

AUDIO

VDD1P

LDON

INTERFACE

PROCESSOR

SDA

DOBM

SUBCODE

CL4

PROCESSOR

VSS1

VSS3

ADC

IREF

FRONT END

V2

VDDA2

V1

TEST1

CFLG

CRIN

C2FAIL

CROUT

VDD3C

TEST2

STATUS

CL16

RESET

CL11

HFREF

VSS4

RA

NC

SIGNAL PROCESSING PART

WCLK

DATA

Supply voltages

Explanation of abbreviations:

Explanation of itemnumber extentions:

+A....... Battery or ext. DC
+S....... SwA
+3.5.... Stabilized voltage of DC/DC converter
+1.2.... Reference-voltage (only if power on)
+5 ....... Ext. DC

X  ....... Components only forseen (not in use)
% ....... Tolerance of resistor is only 1%

D ............................................ wired remote control

A ................................................... recharge circuit

J ................................................................Line out

F ........................................................... IR - sensor

AZ7261,AZ7262,AZ7266,AZ7267,AZ7268 .......... A
AZ7263 ....................................................... A+F+J
AZ7264 ........................................................... A+D

This circuit diagram shows a summary of all
possible versions. For components used in
specific versions see table below.

0V

0V

0V

2.8V

2.8V

2.1V

3.5V

3.5V

3.5V

3.5V

3.5V

3.5V

3.5V

3.5V

1.7V

1.7V

1.7V

1.7V

11.3MHz

16.9MHz

3.5V

3.5V

1.8V

1.3V

1.8V

1.8V

3.5V

1V

1V

1V

1V

1V

1V

1V

1V

1V

1V

1V

1V

2V

11

10

12

13

4

3

2

1

3V

0

servo out or disc motor cw

not moving (f=530kHz)

servo in or disc motor ccw

13

11

10

12

DATA

WCLK

left channel

MSB

LSB

MSB

LSB

right channel

SCLK

TRANSFER OF AUDIO SAMPLES VIA SERIAL INTERFACE OF CD7

CD7 

 DAC

2

3

4

DC voltage measured in
PLAY-mode, DBB=off.
Set supplied via mains adapter

EVM

V

eye-pattern signal

> 800 mVpp

TB=0.5

µ

s

1

Содержание Magnavox AZ 7266

Страница 1: ...rol part 4 1 Servo part 4 2 Signal processing part 4 3 Audio part 4 4 Printed circuit board Copperside view 4 5 Componentside view 4 6 Exploded view 5 1 Mechanical partslist 5 1 Electrical partslist 6 1 6 3 CS 46 158 AZ7261 00 01 01Z 11 14 17 4822 725 24981 Published by Consumer Electronics Printed in The Netherlands Copyright reserved Subject to modification Portable compact disc player PLAY PAUS...

Страница 2: ... car base X X direction 6G Y Y direction 6G Z Z direction 6G Headphone out load impedance 16Ω except crosstalk Output power 2x10mW 2dB Frequency response max vol 20Hz 20kHz within 8dB S N ratio unw 80dB 83dB typ S N ratio A wght 82dB 85dB typ THD N 1kHz 1mW 0 3 0 05 typ Channel crosstalk 1kHz no load 40dB Channel unbalance 40dB 5dB Volume attenuation 1kHz 70dB CD out not on all versions Output lev...

Страница 3: ... 9 Button for stopping CD play deleting various settings switching off the CD player and activating charging OPEN Slide control for opening the lid of the CD player 2 Button for starting and pausing CD play p CD OUT Headphone and remote control socket 3 5mm 4 5 V DC Socket for external power supply Battery compartment for inserting batteries 1 2 CS 46 160 CONNECTIONS AND CONTROLS PROGRAM MODE RESU...

Страница 4: ...5 4822 219 10014 4822 219 10016 4822 219 10026 4822 219 10015 local Korean supplier 4822 219 10017 4822 600 10398 4822 600 10447 4822 138 10615 4822 397 10059 4822 397 10058 4822 219 10033 4822 219 10031 4822 263 21096 4822 263 21101 4822 242 10304 4822 242 10319 4822 242 10291 4822 218 10662 4822 218 10712 4822 218 10793 4822 445 10513 4822 445 10514 4822 321 21602 00 X O O O O O X O X 01 X O O O...

Страница 5: ...o stesso potenziale che quello della massa delápparecchio tramite un braccialetto a resistenza Assicurarsi che i componenti e anche gli utensili con quali si lavora siano anche a questo potenziale Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified be used Safety components are marked by the symbol i Le norme di sicu...

Страница 6: ...2 Remove bottom screws remember hidden screw in battery compartment 3 Open the CD door 4 Lift the top cabinet 5 Take the printed circuit board drive unit out of the bottom take care of battery springs 6 Position printed circuit board drive unit into top cabinet 7 Supply the unit via external DC socket SERVICE TOOLS Audio signal disc SBC429 4822 397 30184 Playability test disc SBC444 4822 397 30245...

Страница 7: ...2 2 CS 46 164 HANDLING CHIP COMPONENTS ...

Страница 8: ...occurs or a button is pressed To stop the playback test disconnect the set from the power source 5 SERVO TEST Purpose Check door and inner switch movement of slide servo and acceleration of discmotor To enter the servo test start service test program and press the PLAY button The display shows S xy x indicates state of door switch y indicates state of inner switch x y 1 means switch is open To mov...

Страница 9: ...re 160ms have passed by Focus point lost The offtrack values of CD7 don t decrease properly when jumping tracks or CD7 indicates offtrack while radial tracking is switched on No valid subcode information for 250ms The slide did not reach it s inner pos inner switch of CDM12 doesn t close before 4 seconds have passed by The focus point could not be found inbetween 4 seconds Radial error occured 25 ...

Страница 10: ... subcode check retry radial check Y N focus search error handler retry focus search Y N auto sequencer error handler retry sequencer display shows no disc start up stopped turntable and disc free N N Y lens movement Y CHECK LIGHTPATH CHECK FOCUS PATH N triangle voltage on focus actuator OK Y N connections to from CD drive OK Y replace CD drive repair connections triangle voltage on pin 42 of 7950 ...

Страница 11: ...of 1800 1 2V Y check supply 1 2 2800 3800 N Y replace CD drive N photodiodes OK Y replace CD drive replace CD drive N Y N Y check CD7 7830 check CD7 7800 7520 3975 3905 OK N Y repair repair N check HF preamplifier 7880 supply 3 5 OK pin 64 of 7830 high emitter of 7901 2V Y pin 1 of 7800 high FAULT FINDING GUIDE LIGHTPATH ...

Страница 12: ...N Y repair connections turntable and disc free mechanical obstruction Y N check servo driver 7950 check CD7 7830 check CD7 7830 focus OK eye pattern OK Y N Y Y CHECK LIGHTPATH N N Y N check servo driver 7950 replace CD drive PWM output on pin 33 of 7830 PWM output on pin 33 of 7830 servo signals on pin 2 44 of 7950 FAULT FINDING GUIDE TURNTABLE MOTOR PATH ...

Страница 13: ...rvo signals on pin 37 of 7950 check servo driver 7950 N Y check CD7 7830 CHECK LIGHTPATH tracking N Y N servo signals on track servo Y N connections to from CD drive OK Y replace CD drive repair connections servo signals on pin 36 of 7950 check servo driver 7950 N Y check CD7 7830 enter service program RADIAL TEST enter service program SERVO TEST check CD7 7830 FAULT FINDING GUIDE RADIAL TRACKING ...

Страница 14: ...truction N FUNCTIONAL TEST start over drive servo checks remove obstruction Y set sensitive to temperature N localize temperature sensitive part repair Y still errors during playback N replace set replace CD drive SET REPAIRED FAULT FINDING GUIDE FUNCTIONAL TEST ...

Страница 15: ...us TRACK_IN H BRIDGE MOTOR DRIVER 3 H BRIDGE MOTOR DRIVER 1 H BRIDGE MOTOR DRIVER 4 H BRIDGE MOTOR DRIVER 2 DC DC CONVERTER FEED BACK S 1 2 A A CLsaw 1 8 MPC1718 SERVO DRIVER SAWTOOTH OSCILLATOR DM_IN MOTO1 from CD7 A CLsaw A CLsaw A CLsaw A CLsaw CLsaw 3 5 Power switch Reg Ref Track L P F L P F L P F L P F FLEX PCB HEADPHONE RC SOCKET RIGHT VOLUME CONTROL LEFT DC in socket ACCU or BATTERY A SUPPL...

Страница 16: ... connects H bridge DC DC converter 2 to LC filter 4 Vin A power supply for servo driver 5 DCout1 DC DC converter 1 LC filter connects H bridge DC DC converter 1 to LC filter 6 Gnd1 2 GND ground for H bridge section 1 and 2 7 Hout1A servo driver focus servo H bridge PWM output 1A 8 Hin1 servo driver power supply for H bridge output section 1 9 Hout1B servo driver focus servo H bridge PWM output 1B ...

Страница 17: ...M3 3456 3402 1k 3491D 4k7 3490D 10k 3492D 56k 3414 47k 3415 470k 3413 470k 3425 2k2 3450F 22 3107X 1M 3493D 1M 2k2 3455 1M 3495D 3265 270 3287A 100k 3288A 1M 3289A 1k 100k 3435 10k 3436 3440 22k 7284A BC848 7283A BC848 7282A 2SD1623T 7290F BC848 BC848 7452 BC848 7942D BC848 7451 BC848 7453 ESD ESD RC RC 2255 100n 2102X 33n 2250X 100n 2252 100n 2281A 100n 2280A 3n3 2101 470p 100n 2453 100n 2402 470...

Страница 18: ...74HCU04 8 9 2 1 6 5 7950 MPC1718 20 22 11 3 5 31 29 1 8 33 26 2 44 7 9 32 34 27 25 13 14 43 35 6 28 12 17 23 39 21 19 38 42 41 36 37 18 15 40 16 4 30 10 24 DC DC Con saw PWM Oscillator Sawtooth driver driver Pre Pre VG VG Vreg POWER CONTROL Vin Oscillator Clock CL Cosc saw Gnd3 4 DCout4 Hout3B DCout3 Hout3A Hout4A Sync Hin3 Hin4 Hout1B Vout Hin1 Deadtime control DCout1 Hout1A Hout2B Hout4B DCout2 ...

Страница 19: ...4R7 3825 8k2 3821 22R 3841 10k 3903 10k 3904 100 3905 4R7 3975 100R 3830 3816 330 220 3815 470 3974 DA DA DA HF HF HF SD DA HF HF SD SD DA SD SD HF SD SD SD DA HF HF HF HF HF HF DA DA DA DA DA DA DA HF HF SD SD SD SD SD SD DD HF HF HF SD SD HF SD CSTCS 8 46 MHz 5800 SCLK DR_REF SLIDE_IN TRACK_IN FOCUS_IN DM_IN SILD RA PORES SDA SCL STATUS INNERSW 1 2 3 5 3 5 3 5 3 5 3 5 1 2 3 5 3 5 3 5 3 5 3 5 3 5...

Страница 20: ...498D 82R 3324 330k 3323 100K 3321 22k 3322 33k 3338 3k9 3k9 3337 1k 3844 1k 3845 1k 3846 3358 680 3355 560 680 3357 680 3353 680 3354 560 3356 3316 47k 3315 47k 3331 120k 3332 120k 3363 2k2 3364 2k2 3385 1k 3386 1k 3349 10k 3347 100k 3348 100k 3360J 1k 3359J 1k 1k 3511J 1k 3510J 3302 1k 3301 22k 3303 10R 2u2 5371X 2u2 5370X 2u2 5362X 2u2 5369X 2u2 5368X 2u2 5372X 1370J HSJ1715 Line Out 4 6 5 7 4 T...

Страница 21: ...2 3992 B 2 5362X A 3 5368X A 4 5369X A 3 5800 B 3 5921 D 4 5950 D 4 5951 D 5 5952 E 5 5953 E 5 6250 C 1 6251 C 1 6390D A 4 6400 A 5 6401 B 6 6450D B 5 6490D A 3 6951 D 5 6952 D 6 7282A C 2 7283A C 2 7300 B 4 7301 B 4 7320 B 4 7322 B 3 7323 B 3 7324 B 3 7343 A 4 7344 A 5 7345 A 5 7366 A 3 7368 A 3 7400 C 5 7451 B 6 7452 B 6 7453 B 6 7494D B 5 7510J A 4 7511J A 4 7520 B 3 7800 B 2 7820 B 4 7830 C 3 ...

Страница 22: ...X C 1 5400 D 5 5920 D 5 6253 C 1 6403 D 5 7251 C 2 7260A C 2 7280 C 2 7281A C 2 7284A C 2 7290F C 2 7365 A 2 7367 A 2 7425 C 5 7920 D 5 7922 D 5 Explanation of itemnumber extentions AZ7261 AZ7262 AZ7266 AZ7267 AZ7268 A AZ7263 A F J AZ7264 A D LINE OUT EXT DC IR EYE 0002 1250 1370J DOOR 2250X 2499J 1430 5370X 1450F DC GND RC5 3251 3255 3281A 7290F 7280 7281A 7284A 6253 7251 7260A 5372X 3287A 3288A ...

Страница 23: ...492 11171 SPRING DETECTION 412 4822 492 11067 SPRING BATTERY 413 4822 492 11065 SPRING BATTERY SHORT 414 4822 417 11281 HINGE DOOR BATTERY LACQUERED 416 4822 443 10236 DOOR BATTERY LACQUERED 417 4822 463 11028 SLIDER 418 4822 449 80075 CABINET ASSEMBLY AZ7261 AZ7263 AZ7266 AZ7267 AZ7268 418 4822 449 80076 CABINET ASSEMBLY AZ7262 418 4822 449 80077 CABINET ASSEMBLY AZ7263 418 4822 449 80078 CABINET...

Страница 24: ...20 4V 2963 5322 124 23675 4 7µF 20 4V 2979 5322 122 33538 150pF 5 63V CAPACITORS 2980 5322 122 32452 47pF 5 50V 2981 4822 122 33496 100nF 10 63V 2982 5322 122 32452 47pF 5 50V 2983 5322 122 32452 47pF 5 50V 2984 5322 122 32481 15pF 5 50V 2985 4822 122 33175 2 2nF 20 50V 2986 4822 122 33515 82pF 5 50V 2987 4822 122 33515 82pF 5 50V 2988 5322 122 33538 150pF 5 63V 2989 5322 122 31946 27pF 5 63V RESI...

Страница 25: ... 1W 3973 4822 051 20103 10kΩ 5 0 1W 3974 4822 051 20471 470Ω 5 0 1W 3975 4822 051 20478 4 7Ω 5 0 1W 3980 4822 117 11449 2 2kΩ 1 0 1W 3981 4822 051 20474 470kΩ 5 0 1W 3982 4822 051 20473 47kΩ 5 0 1W 3983 4822 051 20103 10kΩ 5 0 1W 3984 4822 051 20682 6 8kΩ 5 0 1W 3985 4822 051 20223 22kΩ 5 0 1W 3987 4822 051 20332 3 3kΩ 5 0 1W RESISTORS 3988 4822 051 20332 3 3kΩ 5 0 1W 3989 4822 051 20223 22kΩ 5 0 ...

Страница 26: ...N1 7322 4822 209 33165 TDA1308T N1 7400 4822 209 13566 µP TMP47C823F SHARON1 PB1 7425 4822 209 12991 PST9127N 7800 4822 209 33165 TDA1308T N1 7820 4822 209 33165 TDA1308T N1 7830 4822 209 13554 SAA7376GP M1 7880 5322 209 11517 PC74HCU04T 7921 5322 209 11517 PC74HCU04T 7950 4822 209 12994 MPC1718FB 6 3 CS 46 183 ...

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