Sony MT-MZR70-165, MZ-R90/R91 MZ-R70, Block Diagram - Power Supply Section, Waveforms

Page 27
6-3. BLOCK DIAGRAM — POWER SUPPLY SECTION —

6-3. BLOCK DIAGRAM — POWER SUPPLY SECTION —

MZ-R70

(Page 25)

B

TO PB

SECTION OE

D

TO REC/AMP

SECTION RMC KEY (Page 28)

C

TO REC/AMP SWDT • Waveforms

SECTION SCLK

(Page 28)

04

SW & LCD

 

 

 

 

 

 

 

 

 

 

 

 

 

MODULE UNIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER CONTROL

 

 

 

 

 

 

 

XWKI

 

 

 

 

 

IC901

 

 

 

 

 

 

REC

 

 

 

VC +B

30

 

POWER

 

31

 

 

 

 

 

 

 

 

CONT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SYSTEM CONTROLLER

 

 

 

 

 

 

 

 

 

 

 

 

IC801 (3/3)

 

 

 

 

 

 

 

 

 

 

 

 

 

REC KEY 88

 

34

XWK2

 

 

 

 

 

 

 

 

 

 

WK DET 83

 

35

XWK1

DC/DC

 

 

 

 

 

 

 

 

 

RMC KEY 85

 

33

XWK3

 

28

 

 

 

 

 

 

 

 

CONV

 

 

 

 

 

PAUSE

4

PAUSE KEY

FF CLR 39

 

37

FLCLR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SLEEP 40

 

36

SLEEP

 

 

 

 

 

 

 

 

 

 

REG CTL PWM 64

 

43

CLK

 

 

 

 

 

 

 

KEY IN

86

SET KEY1

CLK 37

 

 

 

 

 

 

 

 

 

 

MATRIX

87 SET KEY2

VBAKN 78

 

38

VSTB

 

 

 

 

 

 

 

 

 

 

HALF LOCK SW 84

 

32

XWK4

DC/DC

SWVG

 

 

 

 

 

 

 

 

 

S802

 

 

17

 

 

 

 

 

22 LCD RST

 

OPEN

 

 

CONV

 

 

 

 

 

 

LCD

 

 

 

 

 

 

 

 

 

 

21

LCD STB

 

 

 

 

 

 

 

VG +B

 

 

 

DRIVER

 

 

 

 

 

 

 

 

 

 

20

XCS LCD

VC PWM 66

 

24

RF1

 

 

 

 

 

 

 

 

 

DC/DC

L2

 

 

 

 

 

 

 

 

VPM PWM 65

 

23

RF2

26

 

 

 

 

 

 

 

SERON 58

 

15

SERON

CONV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XRST 43

X801

40

XRST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LCD

 

 

XTAL 45

16.934MHz

11

 

POWER

VR

12

VR +B

 

 

 

 

 

VLD +B

 

 

 

 

 

 

 

 

 

 

 

CONT

 

 

 

 

 

 

 

 

 

EXTAL 46

 

 

 

POWER

 

 

 

BATT +B

 

 

ON

 

 

VREG +B

10

 

 

 

 

 

 

 

S807

 

 

 

CONT

VB

 

 

 

 

 

1

SYNC REC

VB MON 80

BATT +B

 

 

44

 

 

 

 

 

RF3

 

 

 

 

 

SYNCHRO REC

OFF

 

CHG MON 81

 

8

 

BATM

 

 

 

 

RECHARGEABLE

 

 

 

 

VR +B

 

 

 

5

 

 

 

BATTERY

 

OFF

 

 

 

 

 

 

 

 

 

 

 

S804

XHOLD SW

 

 

 

 

 

 

 

 

 

IC902

 

73

 

 

 

 

 

 

 

POWER

 

2.5V

 

HOLD

 

 

 

 

 

 

 

 

 

HOLD

 

 

 

 

 

 

DC IN

1

CONT

1

2

 

 

VRM MON 89

 

 

 

 

REG

 

 

 

 

 

 

 

 

 

Q901 (2/2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

S803

56

T MARK

 

 

 

 

 

RF5

 

 

 

 

 

 

 

 

 

4

 

 

 

Q901(1/2)

T MARK

 

 

 

 

 

 

 

 

S806

3

PROTECT

XCHG 59

 

47

CHG B

 

CHG SW

48

 

 

 

 

PROTECT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DETECT

 

 

 

 

 

 

 

RS

2

 

 

 

 

S801

 

 

 

 

 

 

 

 

 

 

 

50

OPEN/CLOSE SW

 

 

 

 

 

 

 

 

 

 

OPEN/CLOSE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DETECT

 

 

HI DC MON 90

 

 

 

 

 

 

 

 

 

 

BP801

 

 

 

 

 

 

 

 

 

 

 

GROUND LINE

60

X TEST

GND SW 42

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWITCHING

(TEST)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q902

 

 

 

 

 

 

 

 

 

 

 

 

 

J901

DC IN 3V

• Waveforms

1

50mV/div, lµs/div (PB)

 

Approx.

 

1.4Vp-p

IC501 rs (FE), IC502 ij (FE)

2

0.5V/div, 0.2µs/div (PB)

 

Approx.

 

1.4Vp-p

IC501 ed (RF), IC502 uk (RFI)

3

400mV/div, 20ns/div

 

1.9Vp-p

 

44.3ns

 

IC502 w; (OSCO)

– 29 –

– 30 –

Page 26 Page 28
Image 27
Page 26 Page 28
Contents UK Model US ModelCanadian Model AEP ModelNotes on chip component replacement Flexible Circuit Board RepairingTABLE OF CONTENTS OPTICAL PICK-UPFLEXIBLE BOARD SECTION SERVICING NOTENOTES ON LASER DIODE EMISSION CHECK NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK LCX-2RSECTION 2 GENERAL Page Page SECTION DISASSEMBLY 3-4.MAIN BOARD 3-3.LCD MODULE3-6.SERVICE ASSY, OP 3-5.MD MECHANISM DECK MT-MZR70-165over write head section 3-8.MOTOR FLEXIBLE BOARD 3-7.HOLDER ASSY3-10.“MOTOR, DC M601”, “MOTOR, DC M603” 3-9.MOTOR, DC M602888xxxxxxxxxFREC1SHUF SECTION 4 TEST MODE4-2-2.Operation in Setting the Test Mode 4-2-1.Setting Method of Test Mode000M a n u a l 011 0 5 9 A 011 C 6 8 S011 0 F FJ 011 0 6 3 B000P * * R 000B O v r 000B f u l 000R t r y 000P * * RE I B 000S t a t 000A d r s 000B E m p 000# # # # # #000R # # # # 0001 s t0001 s t 0001 s t 0001 s t 000N - 1 000N - 1 000N - 2 000N - 2 000N• Description of Indication History Description of Error Indication Codes4-7.KEY CHECK MODE 021R e s SECTION ELECTRICAL ADJUSTMENTS021R e s N 021R e s O K ?766V r h V c h 762V c l P W M765V c h P W M 763V r h V c l341 C D O K 014S e t T m p000 A s s y C D R U NCheck Method 043R e s u m e043R e s C l r ConnectionConnecting Location DIAGRAMS MZ-R70SECTION MZ-R70 6-3.BLOCK DIAGRAM - POWER SUPPLY SECTION MZ-R70Waveforms Page Page MZ-R70 Refer to page 41 for IC Block DiagramsMZ-R70 MZ-R70 NJM2173 IC501SN761056 IC302MPC18A21MTB IC601MPC17A56FTA IC603IC901 MPC18A31FTA IC301AK4517-VQ-L 6-9.IC PIN DESCRIPTIONS MAIN BOARD IC502 CXD2660GA Page Page Page Page Page SECTION EXPLODED VIEWS Page MAIN SECTION ELECTRICAL PARTS LISTMAIN MAIN MAIN MAIN Published by General Engineering Dept Sony CorporationMZ-R70 Personal Audio Division CompanySubject Taiwan model Addition US Model Canadian Model AEP Model UK ModelE Model Australian Model Chinese Model Ver
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