Sony Mp-f17w User manual

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Rev.A

70112

SONY

·SERVICE

MANUAL

TABLE

OF

CONTENTS

Des cr

ip

ti

on

SECT!

ON

1

SECTION

2 I

tHROOUCT!

ON

TOOL

SAND

MEASUR

I

NG

I

NST.RUME

NTS

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

.

~

1

2

3

Z-l

GENERAL

AND

SPECIAL

TOOL

LIST

Z-Z

SPECIAL

TOOLS

Z-

3

SECT!

ON

3

SYSTEM

CONFIGURATIONS

TROUBLESHOOTI

NG

••••••••••••••••••••••••••••••••••••••••

15

18

3

-1

BEFORE

TROUBLESHOOTING

••••••••••••••••..••••••••••••••

18

3-Z

TYPES

OF

ERROR

ON

A

SYSTEM

LEVEL

3-3

FAULT

DIAGNOSIS

BY

MFD

FUNCfIOO

amCKER

II

3-4

FINAL

CHECK

........

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

3-4-1

Final

Check

for

1MBy

t e

Mode

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

3-4-Z

Final

Check

for

2MBy

t e

Mode

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

3-4-3

Error

Message

18

26

30

SECTION

4

PART

RE

PLACEMENT

•••••••••••••••••••••••••••••••••••••••

35

4-1

COVER

ASS'Y

REPLACEMENT

•••••••••••••••.••••••••••.••••

35

4-Z

FRONT

PANEL

ASS'Y

AND

EIECf

BUTTON

REPLACEMENT

••••••••

35

4-3

LG-Z

MOUNTED

BOARD

REPLACEMENT

•••••••••••••••••.••••••

35

4- 4

MT-

Z

MOUNTED

BOARD

REPLACEMENT

36

4-5

HALL

IC

ASS'Y

REPLACEMENT

••••••••••••.••••••••.••••••••

36

4-6

CASSETTE

HOLDER

ASS'Y

REPLACEMENT

•.•..••.

4-7

SLIDE

PLATE

ASS'Y

REPLACEMENT

••••••••••••

37

4-

8

00

SENSOR

REPLACEMENT

••••••••••.•••••••.••••••••••.•••

38

4-9

HEAD

CARRIAGE

ASS'Y

REPLACEMENT

•••••••••••••••••••.•••

38

4-10

STEPPING

MO~R

ASS'Y

(RO~R

ASS'Y

AND

STATOR

ASS'Y)

REP

LACBMENT

••••••••••••••••••••••••••••••••••••••••••

39

4-11

OIL

DAMPER

REPLACEMENT

•••••••••••••••••••••••••••••••

39

4-12

COMBINATION

OF

HEAD

CARRIAGE

ASS'Y

AND

LG-Z

MOUNTED

BOARD

••••••••••••••••••••••••••••••••••••••••••••••••

40

SECT!

ON

5

CHECK

AND

ADJUSTMENT

•••••••••••••••••••••••••••••••••••

41

5-1

RADIAL

ALIGNMENT

AND

TRKOO

SENSOR

5-2

HEAD

CCMPLIANCE

5-

3

INDEX

PHASE

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

5-

4

.HEAD

CLEANING

•••••••••••••••••••••••••••••••••••••••••

47

SECTlON·6

PARTS

LOCATION

AND

LIST

(For

MP-F17W-50L)

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

49

SECTI

ON

6-1

PARTS

ASS'Y

LOCATION

6-2

MECHANICAL

PARTS

LIST

6-3

OVER

ALL

DIAGRAM

6-4

CIRCUIT

DIAGRAM

••••

6-'

PARTS

LAYCJt.rr

.•...•••.••.•....•.•••••••.•••.••.••••••••

6-

6 BLEC'fRIC PARTS

••••••••••••••••••••••••••••••••••••••••

7

PARTS

LOCATION

AND

LIST

(For

MP-FI1W-50D)

••••••••••••••

7-1

PARTS

ASS'Y

LOCATION

7-2

MECHANICAL

PARTS

LIST

,

49

51

52

53

56

58

62

6Z

64

..,,,,,,,

TABLE

OF

CONTENTS

Description

~

7-3

OVER ALL DIAGRAM

••••••••••••••••••••••••••••••••••••••

6S

7-"

CIRaJIT

DIAGRAM

•••••••••••••••••••••••••••••••••••••••

66

7-

5 PARTS

LAYOUT

••••••••••••••••••••••••••••••••••••••••••

69

7-

6

ELEcrRIC

PARTS

••••••••••••••••••••••••••••••••••••••••

71

SECTION

8

TRANSISTORS

/

DIODES

/

ICS

ARRANGEMENT

..•..........

75

SECTION 1

INTRODUCTION

Thil

manual

iI

a

maintenance

guide for modela

MP-F17W-50D and MP-F 17W-50L.

SECTION Z

describes

dislu

and toola

necessary

for maineenanc

e.

SEc;TION 3 provides

fault

diagnostic

procedures

that

may

require

spare

parts

or some

adjust-

ments.

-1-

The

overall

check

after

removal.

and

adjust-

ments will

be

included

in

mil

section.

SECTION 4 and ,

cover

part.

replacements

and

adjustments,

respectively.

SECTION 6 and 7

consile

of

circuit

diagrams,

ass'y

drawings, and

parts

lilts.

SECTION 2

TOOLS AND MEASURING INSTRUMENTS

2-1

GENERAL

AND

SPECIAL

TOOL

LIST

The tools and measuring instruments for

per-

forming maintenance on

the

HP-F17W

series

are

listed below.

a.

General

Tools

+

driver

2l11D

+

driver

2.6l11D

Tweezers

Round

nose

plier

Cutter

LR

Driver

CP/H

(SKW-7002)

Soldering

iron

(20W)

Desoldering

metal

braid

DC

power

supplier

SONY

parts

No.

(7-700-749-01)

(7-700-749-03)

(7-700-753-02)

(7-700-757-01)

(7-700-758-02)

(3-985-911-11)

+5VDC±5%,

l.5A

min.,

+12VDC±5%,

L.5A

min.

Tester

b.

Special

Tools

HFD

Function Checker

II

IF Board 52/53

Fixture-LO

SHC

System

For

AC

120V

SHI-70L1/SHI-7011A/

SHI-7012/SHI-7012A

SHC-70

KX-l3HGl

SKK-0001

SHI-7016

Digitizer

Conversion Cable

II

(J-623-9L6-oA)

(J-623-904-oA)

(J-623-909-oA)

For

AC

220V

SHC-70GP

PVH-137lQH

SKK-0002

SHI-7016

(J-623-o22-oA)

(J-623-o2l-oA)

Radial Alignment

Adj.

Driver

(J-623-810-oA)

TRKOO

Adj.

Lever (J-623-910-oA)

Index

Adj.

Lever (J-623-911-oA)

Pad

Weight (J-609-158-oA)

Conversion Cable (01)

only

Torque

Driver

with

two

bits

Power Cable

Interface

Cable

c.

HeasUZ'iq

Equipaent

for

HP-F17W-50D

(J-623-907-oA)

(J-623-807-oA)

(J-609-130-oA)

(J-609-201-oA)

Oscilloscope

Dual Trace

20KHz

Universal

Counter

Resolution

O.lmsec.

d.

Disks

KFD

System Disk

(OR-D176VA)

Cleaning Disk

(OR-D29WA)

(8-969-920-54)

(8-960-009-39)

This disk can

be

used

for

head clean.

HD

Level

disk

(OR-D206WA)

Level Disk

(OR-D46WA)

(8-969-920-11)

(8-960-009-40)

These disks

are

used to check

the

read

amplifier

gain. The

self-read/write

operation can

be

checked with these disks

and.

the

SHC

System.

4M

Dynamic

Inspection

Disk

+30

(OR-D222WA)

(8-969-920-62)

Dynamic

Inspection

Disk

+30

(OR-D51WA)

(8-960-009-44)

2H

Dynamic

Inspection

Disk -30

(OR-D223WA)

(8-969-920-63)

Dynamic

Inspection

Disk -30

(OR-D52WA)

(8-960-009-45)

These disks can be used

in

the

final

check

for

a drive with

the

SHC

System.

Hote:

(+)

indicates

that

data has been recorded

in

the

inner side of tracks.

Side

0/1

(-) indicates

that

data

has been recorded

in

the

outer

side

of

tracks.

OR-D51WA/OR-D222WA

OR-D52WA/OR-D223WA

Offset

of

+301J1D

Offset

of

-301J1D

for

all

for

all

formatted

tracks

formatted

tracks

Content

of

Dynamic

Inspection

Disk

50

Auto Disk

(OR-D157WA)

(8-960-010-60)

This disk has prerecorded

data

such as Cat's

eye

pattern

and Index signal

to

check and

adjust

the

off-tracking and index position.

Signal

Tracks

Side

0/1

Index

Burst

40

Cat's

Eye

Pattern

00.

22,

27

Cat'.

Eye

Pattern

31.

36,

45

Side 0

49.

54,

58

63.

79

2F

04

Side 1 2F(

+301J1D

off

track)

76

Content

of

50

Auto Disk

e.

bpeoclable

and

Cheaical

Supplies

Sony

Oil

(7-661-018-01)

Molykote

Grease

(7-662-001-81)

Bamboo

Stick

2-2

SPECIAL

TOOLS

2-2-1

IIFI>

FUDCaCIG

Olecker

D

(1)

MFD

Function

Checker

U configuration

(Refer

to Fig. 2-1)

Main Checker Board

34P

Flat

Cable

Power Cable (2 pieces)

(2) MID Function

Checker

II

function

(2)-1 Switches

• SW16...

Set

this

switch

to

the

"250Kbps"

side for 1MByte mode. ("500Kbps" side for

2MByte mode.)

•

srEP

OUT (IN)...

Steps

the

head

outwards

(inwards).

The

head

continuously moves

if

STEP IN

or

OUT

switch

is

kept

pressed.

C»

WDSEL

...

Selects

such

write

data

as "2F",

"IF",

"M",

''W'' or

"DC".

o WRITE... Records

data

specified

by the

WDSEL

switch,

onto

one

track.

o CHGRST...

Resets

the DSKCHG signal. (for

eject

motor

installed

version,

eject

the disk)

o INUSS... This

switch

is used

to

light

the

INUSE lamp.

e HDSL

...

Selects

one

of

two

heads

(side 0

or

side

1)

for a double sided. (This

switch

is

invalid for single sided version.)

o MON... This is

used

to

operate

the

Disk

Motor.

e DRIVE SELECI'...

Selects

the disk

drive.

The

number of this DRIVE SELECI'

must

agree

with the DRIVE

SELSCI'

number of

the

drive

under

test.

The

number embossed

on the component

itself

(1,2,3,4) is not

that

assigned for the

drive

selec

t.

• RESET

•••

Resets the CPU•

•

srEP

RATE

•••

Set

this

switch

to

"3ms" for

the

MP-F17W

series.

• TRACK

00

ADJUsr...

This

starts

measurement of the TRK

00

sensor

level.

MP.FI7'N-50L

J2~

,~

I~~

Jl

MP.FI7W·50D

<"

the

Main Chscksr

Board

J2p'

~,

.~

Jl

Powsr

CabJs

Fig.2·1

MFD

Function Checker

II

Configuration

-3-

•

SW4

...

Set this

switch

to

"A" for MP-Fl7W

series•

..

SWl...

Feeds

power supply

voltage

of

+5V

and

+12V

to

CN

3 (34pin

connector).

Set

this

switch

to "34+4" side for the

MP-F

17W

series.

(2)-2

Indicators

•

WDSEL

...

They

indicate

the

selected

position

on the

WDSEL

switch.

• IIF signals... They

indicate

the

states

0'£

TRK

00,

ROY/HDSEN, DSKCHG,

WRTP

RT,

and INDEX,

respectively.

The

TRK

00,

WRTPRT, RDY/HDSEN, and

DSKCHG

indicators

are

lit

when

the

respective

IIF

signals

are

low (true).

The

INDEX

indicator

blinks when

the

INDEX

signal is applied to

the

board.

•

Track

Position...

Indicates

the

current

track

poaition.

(2)-3

Test

Points

TP-l,

TP-8,

TP-9;

GND

TP-2;

MON

TP-3;

INDEX

TP-4;

RDDATA

..

TP-5;

WRTGT

TP-6;

WRTDT

TP-7;

srEP

TP-IO;

EXT

TP-ll;

TRG

(3)

Part

Layout

and

Circuit

Diagum

on

MFD

Function

Checker

II.

(Refer" to

Fig.

2-2,

2-3)

Fig.

2·2 Part

Layout

on

MFD

Function Checker /I

-4-

+5V

C,N2

+5V

o--~~-,

+5V

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PR

0~4

6~

1 3 0

lIo0ATA

5 2

R4

10

L-------t1--1~_t--_1~--1~~1==~+~1!2lV~

TOI-'1t...-...:

3

:.tocIl

LR

II.!

~~

a"!

~--=3:.toc

Q

~'Q

8

ICt5

K 2

HoSL

C

,-r'bLR

'bLR

IC4

r'cLR

L500

_.::.9<1~1~l--l

______

l

.....

________

-,

"-133

tl2V

iT

IC9

13,

1 LS74"

13'!'

"

TP10

4

6 LS'T4 6

L-

___

:..I _

r:l..

C21'"

1119 "'SV

Ice

10KI4

··.12

READY

Pl0~2~7~~~+~S~V~~~~~~+~5~V~~~~~~il~8~1~~22~~1~.~0~I~~~~10~0~K~~~~~~L~5~2~4~4~~~~~lIj8~~ro~~~~~~!J

?CN4

Pl1

28

T "

16A4

115

."1

1

EXT

P12

29

....

14A6

lUI

."3

2

N.

C

P

13

:3

0 "

12

A 8

116

,;:;.-

~3;.,o.

__

..;;G~N..;;O_

...

LED

~

~.:;l~

~

IC8

111".

.",.r-

acaa

...

":I"~I'I~I

...

-

....

8 1 2 3

I.

LEol

HP50B2

7340(10)

5~

71

GL9NG2x5

113

a

I~l-~f'"

-

-'

"I

1182

L5244

680

L

__

-f-.J

470

't5V

I

1.5/2SVx14

1"SV

TPl

TP8

TP9

Fig.

2-3

MFD

Function

Checker"

Circuit

Diagram

-5-

-6-

2-2-2

IF

Board '2/53

(1)

IF Board

5Z/'3

configuration

(Reier

to

Fig.

Z-4)

Main

IF

Board

RF Cable

IF Cable (34pin)

(Z)

IF Board

5Z/'3

func

non

(Z)-1

Switches

o

MOTOR

ON

..........

Sets the motor of

the

unit

to

rotate.

f)

POWER

SEL (CN1)

•••••••

Feeds

power

supply

voltage of +5V and +lZV

to

CN

1 (34pin

connector).

Set

the

this

switch

to

"off"

for MP-F

17W

series.

U)-Z

Indicators

..

01/02........

These

indicators

are

lit,

during

the

actual

power supply of +5V and +lZV

to

34pin

connector.

No

indication

for MP-FI7W

series.

o

03/04

........

These

indicators

are

lit,

during

actual

power

supply of +5V

and

+lZV

to

IF

board 52/53.

(Z)-3

Test

Points

o RF out/TRKOO/GNO

•••••

These

test

terminals

are

used

for

radial

alignment adjustment.

(Reier

to 5-1)

(3)

Part

Layout

and

Circuit

Diagram on

IF

Board

52/'3.

(Reier

to

Fig.

Z-"

2-6)

Fig.2·4

IF

Board52/53 Configuration

-7-

Cl)

I

CH

3

CN

1

~'16

_1

lall-8

1K

·\V

I 1

MOTORON

CN

6

1

CHGRST

2

OSEl

a

l-

I

CHGRST

9 •

....

I

2

05KCHG

3

OSKCHG

2

OSKCHG

R1

!>10

~D"U.I:n6j

I v

Itl

.J'\

+SY

I 3 -3 'SV/GHD

'O'1I!r

·\v

IC

l

SlfJti.S1A4

4

DSEL

1

_..J

GilD

N]-6

tOl( •

11

JUII-! 1k 4

4

IHUSE

..

;:t&

'--

5

CHGRST

IMUSE

5 ·SV/GNO

f--

Ie"

I 5

DIRECTION

5

GNO

I-

5

DSEL

4

r-

1 G H 0 5

OSEl

,

l-

f--

IC!

~-

'\'

1

i-

7

+SV/GHO

5111"'1

RtiH

-;0

8

STEP

GIIO

""

10

INOEI

8

IHOEX

I v .Sv

.5

...

i-

9 G H 0 -e

9 -SVtGHO

f--

,\V

11~

10

WRTOT

9

Gil

0

I-

1I\l2~J

10l

10

OSEL

1

~~

...

·l

I-

11

GilD

10

OSEll

Ie

1 "

i-

II

+SVtGIIO

-

9f1AlSI)I}

11

WRTGT

1\

GilD

12

OSEL

2 "

VI

...

-13

GNO

'-

-12

OSEL2

13

Gil

0 -

'-

-

14

HOLDAO

-

13

GN0

I-

14

OSEL

3

'0

Y1

8

!l

-15

Gil

0

14

OSEl3

I-

.n

OM,·

CI\

L

1$

Gil

0 -

Ie

5

Jl_

1l

+IV

NZ-9 .\,

16

HOSL

15

Gil 0

I-

'd=o~

~

'0'

'I~

c.!..

Y3

eFJ,

16

IIOIORON

.1

-17

GH D

i-

16

IIOIOROH

11

G N 0 -.\,

,-

rnn-) -

-18

11

G H 0

I-

SN1'lS'1l

tSv

9

leI

"

INDEX

18

OIRECTION

-I-

~

of

5v

o---!!c

Cl

~

(

8~+!tv

~19

GilD

'----18

DIRECTION

'0

.\,

.c.

19

GilD

-

';.l

20

TRK

0

19

G

"0

I-

.es

RUB

\ . '1 Q S""lS211

'n"lS']1

20

STEP

" "

-21

GilD

20

STEP

21

GH 0 -

.!

0;.:.

~-

-22

WRTPR

e-

21

GH 0

l-

n

WRTOT

--

-lJ

Gil

0

22

WRTOI

....

I

23

G H 0 -

Itl

'SV

--

24

RO

DATA

f--

23

G

II

0

i-

11

tM"1-4

1K

24

WRTGT

1t:-

25

G N0

24

WR1GT

25

It!

G N 0

'-

t;"'Z-2 '()II: ." S"1,11 .\, -

26

READY

I-

25

GH D

I-

']

11

aMI-S

u:

26

TRK

0

26

TRK

D

21

GilD

~

r

111<2-1

'0<

'IV

,~]

27

G N 0

I-

28

WRTPR

28

WRIPR

01

t2t

.d

01lt

Ul>.u

v

29

"2V/GHO

TJ

1I!r

_

.1

~M2-5

10It:

'IV

)~

29

Gil

0

I-

30

RD

DATA

] .

30

RDOAlA

IC

1

31

,'2v/GHO

I-

SN'4LSl,U 1

AMl-l

lit:

.\V

3!

G N0 -

32

HDSl

II

1

32

HOSL

E:

e

.~

Cl

.to!

::t

~

en

(J

I

l

~

<0

~

33

.'2V/G

NO

I-

........

·sv

33

GilD

-

I

Nl·]

tOf:

,~l

34

READY

, 1

34

READY

11

...

.~

It..

sw,

tN

2

r::-.::J

L 1 + S v

I ! I

'\v1=

2 G/I 0

.~

:--<'+1lV 3

GilD

r--11l

\ ...

.e

1

>'0

.1

.,

(

+12

V

"-r4->

1

1.1'

UK

..

0.01

Il

! I

~.

.,

Cll

lIS

IP\I~MI

Y

012

1 _

If'Cr&e

]]0

0.1

'00

(9

el

CI

HOC

~::.zIllJTI

110~6

0_'

0.1

'Dll1,

>'5

Ie'

-ltv

tN

4

II

.

l"l

JJO('081C

...

O'l

/I

VOl

t *

L

til

5

~

I<

~F'

: C5

e!

1 + 5 V

r4->'

I

1.1'

'.1'

II

4y;,

~~.

0.'

1

RF

(+J

"6

10'

2

GilD

0./11

>"

Jr

bd,

± +*L

2

RF

H 120' "

i'>

: 3 G

"0

. i AR(Hl·'ZI'

,f

P

3

GilD

,p)

+12

V

f

~'\!B

.'lV

•

01'

(GNOI

c.

e2

J.

, /I t

>10

(10

el

0]

0.1

1OIl't6

111

ICI /lilt"

..

l....

0_'

DC-DC

COIIvrOTE>

5

TRKOD

UPU081t

SID

1.21 A

~'

'"

. I

'"

Rl8

(tRlOO

our

I

O:~

~~(

~~

Ol

'DO

'00

lUll'"

':-lLUAJ6A

J 7ir

2-2-3

Oigitiser

Digitizer

is

used

for

Radial

Alignment and

TRK

00

Sensor

adjustment.

(1)

Digitizer

configuration

(Refer

to

Fig.

2-7)

Digitizer

Board

IF Cable

AID

Harness

(2)

Part

Layout

and

Circuit

Diagram

on

Digi-

tizer.

(Refer

to

Fig.

2-8,

2-9)

Digitizer Board

Fig. 2-7 Digitizer Confirguration

Fig. 2-8

Part

Layout

on

Digitizer

-10-

06

C2jSijO.,l

V r

CNIOI

..

ISV

03

ROI18

1'I2V

01

,':.'587

151587

~

1'SV

":':~':'-

__

-.

-,';;

RIO

~

+5V

...oL

,,;r'

4:n

IT

1 GN0

•

SO

~

I-~~

R33

R32

j..

':_N+-'0_3';;';"_--I~

0~15

TP'

1

RF

IN

r----'

ce

'CV2S1

rr::

I-Z--+-_T

_R

K_O_S_E

N_Soolf--

J

RV

I

3

COMMoN

I-..--+-

......

20K

L--I,..;...

__

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I

..

NJ1ot45620

NJIot4S620"l"

01

~C'

1 J

R:4'~T

~-"~Cl

2SC,364

R9

ISO

NRI2Y-

_,.

Tl~82C

~

1'C.,.,4

~

\lid

S.aK

10K

2 G N 0

68K

T

L082C

11....

""

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.,

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11

l

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R21

IOKl,n

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1J...t-1---!--~~i+'..:

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P27

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d_

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7

INCI1'I5VO

TC4066B

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Rig

R17

10K

(CPU)

"'}...V

:~jK

C24

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6

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1~!.Op

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220K

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4

+5V

+

15v

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C6

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7 TX0

1.5K

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L---~~_:_:_---------f_:::_::_-----J

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LS06

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C28

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(.::::&

R30

3.3K

R14

4.7K

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..lJ~UPC3"C

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9

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1-.1

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20 G N 0

r---t

4ICI9,..13L--f--

21

0I RTN

LS06

1-=2..:;,Z+-..::G.-;N;..O:;....~f

I-=Z..:;,34-..::G:...;N;..O:;....~f-

24

25 G

NO

f-

1--4-":""-';'-i

26

GNO

t--

1-....1-...;;,..;.;..,;;........

rfrr

i

-11 -

TP7

9

,

1.1

J

IC20

LS374

11

15

16

19

"

Fig. 2-9 Digitizer

Circuit

Diagram

t---1

~

r---l

t----ll

i---L

f---.14

~

L.!J

,

ICIO

LS374

34

35

~----------I~3~6~~R~ES~~

I~

37

DO

10

38

0 I

15

39

02

6 I

40

03

16

4'

04

5

42

05

'9 I

43

06

~1?~+-+-+-4-~------~~4~4-1--~D_7

__

~

j 45

RTRN

Jr

1 L

j.:4..:..j6

_R.-;T

R_N--I

+

12V

r

11-=4:..:.7_1__+....,;.12_V-~

1>----148

+

12

V

C39

~_I_----I

10%5

j..:4:..:9_1_---~

50

-12

-

2-2-4

Fixauc-l0

(1)

Fixture-lO.

confiBuution

(Refer

to FiB. 2-10)

Fixture-lO

FG

PCB

(2)

Fixture-lO func cion

Switch

oXADJ... This

switch

is used for

Radial

Alignment Adjustment.

(Refer

to

5-1)

(3)

Part

Layout

and

Circuit

DiaBram on FG

PCB.

(Refer

to

Pig.

2-11,

2-12)

\ULoQ---O

Fig.

2·10

Fixture·10 Configuration

FGPCB

Ie

1

NJM2903D

A

FG

O---------!::...j

Fig. 2·11 Part

Layout

on

FG

PCB

+ 5V

(Fl

R5

10K

R2

10K

R1

1K

:>-!~I----o

0FG

+5V(Flo---~~~~~--.

R3

10

K R4

47K

Fig. 2·12 FG

PCB

Circuit

Diagram

(4)

!rutallation

procedure

of

Index Adj.

and

TRKOO

Adj.

levers

into

Fixture-IO.

(Refer

to

Fig.

2-13)

a. Remove

two

screws

(PSW4x14) from

TRKOO

Adj

lever,

install

the

lever

on

the

acryl

plate

of

Fixture-IO

and

secure

it

with

two

screws,

as

shown.

b.

Separate

screw

(K2.6xIO),

knob from Index Adj

lever.

waahers

and

!rutall

the

lever

itself

on

the

acryl

plate

of

Fixture-IO

and

secure

it

with

the

screw,

washers

and

the

knob,

as

shown.

~K2.~X10

Index

Adi

Lever

~

Washer4

~

TRKOO

Adi

L.ever

Fig.

2·13

Index Adj. and

TRKOO

Adj. Levers Installation

-14-

2-3

SYSTEM

CONFIGURATIONS

Level Disk

(OR·046WAJ

HO

Level

Disk

(OR·0206WAJ

50

Auro

Disk

(OR·0157WAJ

MFO

Function

aJeckeT

II

Power Cable

Fig.

2·14

Configuration

for

Function Check

-15-

..

"",

SMC-70

,-evel Disk (OR-D46WAJ

HD

'-evel Disk fOR-D206WAJ

Dynamic Inspection Disk fOR-D51WAIOR-D52WAJ

2M

Dynamic Insp8Ction Disk (OR_D222WAIOR-D223WAJ

Fig.

2-15

System Configuration

for

Drive Test

_1'::_

To

DC

Power Supply

To

Monitor

SMC·70

Conversion Cable (01)

(only

for

MP.F17W·50D)

50

A

UTO

Disk (OR·D157WA)

RED

(TP·1, TP·2)

Fig. 2·16 System Configuration

for

Radial

Alignment

-17

-

SECTION 3

TROUBLESHOOTING

SECTION 3

describes

the

methods

of

trouble-

shooting.

3-2

refers

to

several

errors

specified

in

a system

level.

3-3

describes

normal

ope-

rations

and

the

check

points

for

abnormal

operations.

These

descriptions

define

the

Error

Spot under op

crating

conditions.

3-1

BEFORE

TROUBLESHOOTING

The

following

proc

edures

are

recommended

to

see if the

drive

is

really

faulty

or

not:

a.

Incorrec

t

operational

procedure

b. program

error

of

host

system

c.

Poor

connection

with

host

system

(esp.

GND-related

connec

tion,

frame

GND,

etc.)

d.

Defective

disk.

Check

that

same

trouble

occurs

with

other

disks.

e. Environmental conditions

(where

electrical

noise easily jumps

into

signal)

f.

Influence

of

strong

magnetic

field

g. Wrong supply voltage

h.

Wrong

drive

selection

3-2

TYPES

OF

ERROR

ON

A

SYSTEM

LEVEL

3-2-1

Soft

Euor

Soft

error

are

caused

by:

a.

Dirty

head

b.

Electrical

noise

c.

Tracking

error

d.

Poor

connection

with

system

(GND-related

connection)

e.

Incorrect

motor

speed

f.

Incorrect

head

compliance

Clean

the

head

first

by

cleaning

disk.

Check

for index pulse

interval

and

head

compliance

and

then

read

error

spot more

than

several

times.

If

not

readable,

move

the

head

to

the

adjacent

track

in

the

same

direction

as

before,

then

return

to

the

desired

track,

and

read.

If

readable

this time,

check

radial

alignment.

(Refer

to 5-1)

If

not

readable

yet,

the

error

is

not

recoverable.

3-2-2

Write

Brror

To

determine

which

of

the

disk

or

the

drive

fails

the

disk should

be

replaced

by

other

disks

and

check

that

there

still

exist.

write

error.

If

write

error

does

not

exist

any

more,

remove

the

old

one.

If

write

error

exists

with

use

of

any disk,

drive

might

cause

write

error.

3-2-3

Seek

Euoe

Seek

error

comes from:

a.

Head

movement is

incorrect

because

electri-

cal

noise jumps

into

signal.

b.

Head

driving

system

might

be

at

fault.

If

it

is

not

readable

after

re-calibration,

drive

might

be

at

fault.

3-2-4

Interchange

Error

If

data

written

on one

drive

is

readable

cor-

recdy

on

another

drive,

but

not

by

other

drives,

interchange

error

exists.

Interchange

errors

are

caused

by:

a.

Head

is

not

properly

positioned.

b. Motor

speed

is

not

correct.

c.

Optimum

head

output

level,

offset

and

head

compliance

are

not

obtained.

d.

Chucking mechanism does

not

work.

3-3

FAULT

DIAGNOSIS

BY

MFD

FUNCTION

CHECKE

R

II

3-3-1

describes

check

method

for

normal

operations

in

accordance

with

the

prede-

termined

procedures.

3-3-2

describes

check

points

for

abnormal

operations

which

come

out

in

accordance

with

the

above

procedures.

-18-

Sony MP-F17W User manual

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