Samsung MM-N2 Service manual

MICRO COMPONENT SYSTEM

MM-N2

SERVICE

Manual

MICRO COMPONENT SYSTME CONTENTS

1. Alignment and Adjustments

2. Exploded Views and Parts List

3. Electrical Parts List

4. Block Diagrams

5. PCB Diagrams

6. Wiring Diagram

7. Schematic Diagrams

ELECTRONICS

Printed in Korea Code no. AH68-20183G

6. Wiring Diagram

Samsung Electronics

6-1

Samsung Electronics 4-1

4.Block Diagrams

4-1 Main

4-2 Samsung Electronics

Block Diagrams

4-2 CD

Block Diagrams

SLED

MOTOR

SPINDLE

MOTOR

PICK - UP

TRACKING

ACTUATOR

FOCUSING

ACTUATOR

A.B.C.D.E.F

LD.PD

DISC

SP+

SP-

TRK+ TRK-

FCS-

17

18

11 12 26 27 1

2

+5V

19

10

25 3

43

46

50

48

71P/U IN

LIMIT S/W

OPEN/CLOSE MOTOR

2

10

DM- DM+

MOTOR DRIVER

OPEN/CLOSE S/W

41

69.70

65.66.

67.68

33.30

29.25

22.24.23

31

35.36.37

38

40

MOTOR CONTROL

S/W SENSOR

FOK

MAIN PCB MAIN PCB

MICOM CTRL LINE

POWER / AUDIO LINE

10

1

11

219

19

R

G

L

21

20

36.37.38

68

25.26.30

29

10.70.72

73.75.76

27

MCK. MDATA. MLT

ISTAT

SQDT. LKFS. SOS1

SQCK

A. GND

R-CH

L-CH

GND

B+

RESET

LOCK.SMEF.WDCH.SMON.SMSD

SL IN

SP IN

TE IN

EF IN

VREF

SL-

SL+

MOTOR/ACTUATOR DRIVER

6

ASSP

KB9223

NIC 9223

SCW1

SCW4

SIC1,SIC2,SIC3

DIGITAL SIGNAL PROCESSOR

16.9344MHz

66.69

8

EFM.TRCNT

LB1641/BA6209

UP/DOWM S/W

ROULETTE SENSOR

UP/DOWN

ROULETTE

MOTOR

SIC1,2,3

KA9258

NIC 9258

KS9286

NIC9286

NIC9223

KB9223

SUB PCB

9

Samsung Electronics 4-3

Block Diagrams

23 22 21 8 20 19 18 15

24

16

17

9

1

2 3 4 5 7 6 10

11

12

13

14

PB NF(2)

PR IN(2)

R/PSWMUTE

SW

MUTE (IN2)

ALC RECOUT(2)

100K

PRE

RECORD

LREF

PLAYBACK

LREF

PRE

NF

100K

INPUT

PB.BIAS

REC.BIAS

INPUT

N.F

MODE CONTROL

/BIAS CIRCUIT

PU

NF(1)

PB IN(1) A/BSWPB GND MUTE

IN(1)

REC

OUT(1)

PB OUT(1)

REC GND

Vcc

PBOUT(2)

100K

PRE

INPUT

N.F

ALC DET

PRE

N.F

INPUT

REC NF(2)

REC IN(2)

REC IN(1)

100K

ALC TIME CONSTANT

R/P SW

A-IN

B-IN

A/B SELECT S/W

A-IN

B-IN

KA22291 : JIC301

4-3-1 Main

4-3 IC & TR Internal Diagrams

TA8207K : AIC601

3 12

1

2

10

11

9

8

7

4

5

6

30K

45

CH2

DIAS CIACUIT THERMAL SHUT DOWN PROTECTION CIRCUIT

45

30K

IN1

NF1

RIPPLB

IN2

NF2

GND

B.S.2

OUT-2

OUT-1

B.S.1

CH1

+

-

+

-

4-4 Samsung Electronics

Block Diagrams

86

80

67

70

5

3

4

2

72 77 75 76

10

9

8

37

38

36

79

69

68

78

61 62 63 64 65

7

15 12 21

11

20

30

33

32

26

29

SUBCODE SYNC DETECTOR

SUBCODE OUTPUT

SUBCODE Q REGISTER

23 BITS SHIFT REGISTER

EFM PHASE DETECTOR

DPLL

ECC

18K SRAM

SRAM ADDRESS CENERATOR

DIGITAL OUTPUT

MODE SELECTOR

CPU INTERFACE

TRACK COUNTER

X-TAL TIMING OSCILATOR

INTERPOLATOR

CLV SERVO

FRAME SYNC DETECTOR PROTECTOR INSERTOR

EFN1 APDO2 APDO1

SOCK

SODT

SDAT

SBGK

SOS1

VCOLO1 CONTVOL DPFIN

DPFOUT DPDO

SMEF SMON SMDP SMSD

LOCX

XOUT

XIN

MDAT MCK MLT DSPEED

CNIN /ISTAT

DSPEED

SEL1

SEL2

SEL3

SEL4

TEST

C2P0

ADATA2

ADATA1

LRCH1

LRCH2

DATX

EFM DEMODULATOR

KS9286 : NIC9286

28 27 26 25 24 23 22 21 20 19 18 17 16 15

1 2 3 4 5 6 7 8 9 10 11 12 13 14

GND

10K

REGULATOR

10K

VCC VCC

10K

T • S • D

10K

50K

MUTE

+-

LEVEL SHIFT

-+

LEVEL SHIFT

KA9258 : NIC9258

Samsung Electronics 4-5

Block Diagrams

KB9223 : NIC9223

RF–

FEI

RF Amp

FDFCT

59 54 22 30 29 31 38 37 36 35 51 52 58 26 28 27 3

60

47

48

57

49

50

53

55

62

61

43

44

42

46

45

23

24

25

6

39

1

40

15 16 13 14 19 17 12 11 9 105

32

33

77

2

4

78

76

75

69

70

71

68

79

66

63

67

65

73

74

TE1

WDCH

TRCNT

LOCH

ISTAT

RESET

MLT

MDATA

MCK

ATSC

TZC

FE2

FLB

FGD

FS3

FE-

FEO

TDFCT

TE-

TEO

TE2

LPFT

TG2

TGU

SLO

SL–

SL+

SPDLO

SPDL-

SMDP

SMON

SMEF

FSET

MIRROR

MCP

FOK

GC10

GC11

CH10

CH11

MUTEI

RRC

CH20

CH21

GC21

GC20

DCC1

RFO

PD1

PD2

F

E

EI

PD

LD

VR

ARF

IRF

ASY

EFM

RFI

DCB

Focus Error Amp

FE-BIAS Adjustment

Tracking Error Amp E/F Balance & Gain

Control

APC Amp

Center Voltage Amp.

RF Level AGC

&

Equalizer

EFM

Comparator

Defect Dectection

Circuit

Micom Data

Interface Logic

MICOM TO SERVO CONTROL

AUTO SEQUENCER

ADJUSTMENT-FREE CONTROL

FS1 to

FS4

TM to

TM6

BAL1 to

BAL5

PS1 to

PS4

GA1 to

GAS

Focus Phase

Compensation

& Offset cancel circuit

Tracking Phase

Compensation Block

& Jump Pulse GEN.

Sled Servo Amplifier

& Sled Kick GEN.

Spindle Servo LPF

(Double Speed)

MIRROR DETECTION

CIRCUIT

FOK DETECTION

CIRCUIT

Built-in Post Filter Amp (L&R)

RF Amp

4-6 Samsung Electronics

Block Diagrams

4-4 µ-COM (LC72362N-9487) : UIC1

No.

Name

Function

I/O

Descriptions

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

Xin

TEST2

PG3SI/O PG2/SO0 PG1/SCK

PG0

PF3/SI1

PF2/SO1

PF1/SCK1

PFO

PE3/S12

PE2/SO2

PE1/SCK2

PE0 PD3 PD2 PD1 PD0 PC3 PC2 PC1 PC0 PB3 PB2 PB1 PB0 PA3 PA2 PA1

PO0

Vdd

PQ0

PP3 PP2 PP1 PP0

PO3 PO2 PO1 PO0

I I I I I I I I I I

O

I

I O O O O O O O O O O O O O

I

-

I/O

O O O O O O O O

OSC 4.5MHz

CLOSE SW LCD CONTROL DATA LCD CONTROL CLK LCD CONTROL CE OPEN SW VOLUME CONTROL DATA VOLUME CONTROL CLK VOLUME CONTROL CE SENSE SQDT SQCK F OK MLT MDATA MCK CLOSE OPEN MUTE RESET

MOTOR CONTROL FM MODE IF CNT HIGH SPEED MOTOR CTL TAPE PLAY TAPE REC TAPE REC LKFS SOSI

CD TEST

OSC for SYSTEM CLOCK

DOOR CLOSE SENSE PORT LCD CONTROL SIGNAL LCD CONTROL SIGNAL LCD CONTROL SIGNAL DOOR OPEN SENSE PORT VOLUME CONTROL SIGNAL VOLUME CONTROL SIGNAL VOLUME CONTROL SIGNAL SERVO FUNCTION SIGNAL SUBCODE “Q” CHANNEL DATA CLOCK for “Q” DATA FOCUS OF SIGNAL LATCH for MAIN DATA MAIN DATA MAIN CLOCK DOOR CLOSE CONTROL PORT DOOR OPEN CONTROL PORT CD MUTE CONTROL PORT IC(SSP IC) RESET PORT

MODE KEY ON/OFF MODE:”H”,”L” CONVERSION When SD SIGNAL is L MODE : ACTION HIGH SPEED

CD SYNCHRO RECORDING CONTROL INDICATE FRAME SYNCHRONIZATION STATUS SUBCODE SYNCHRONIZATION SIGNAL

CD PROGRAM CHECK