Sony OA-D32V, OA-D32W Service Manual

MICRO

FLOPPYDISK

DRIVE

OA-D32W

OA-D32V

SONY

SERVICE

MANUAL

Specifications

Capacity Unformatted Per Disk

Unformatted Per Track

Bu~tTRANSFER

AcctItITlme Track

to AverageSettling Head Load Time Average Latency

Functiona' Rotational

Recording Density (inside track)

Track density Cylinders Tracks R/W Heads Encoding Method

Heat Dissipation Operating Mode (Head Load)

Standby mode (Head Unload) Media

Requirements

3.5" x 3.7" (90 mm x

Environmental Consideration. ReliabilitY and Maintainability

Preventive Maintenance Meantime Between Failures (MTBF) Meantime Component Life Media Life Disk Interchange Soft Read Error Hard Read Error Seek Error

Envlronmenta' Limits Temperature (Operating)

Humidity

Vibration (Opel'8ting)

Dimensional Data

DC

Power Requirements

Reading (Operating) +5.0 V ±5 %

Track

Time

Speed

-Average

to

Repair (MTTR)

(Operating)

2.0

Height

4.0 in.

Width

5.1 in.

Depth

1.51bs (S50

Weight

+12.0 V ±5 %

RATE

94

mm)

access time a 1/3 X {Track Nos.l x (Track

(PM)

In.

(51

(102

(130 mm)

OA·D32W

SI

NG

LE

J DOUBLE

DENSITY DENSITY

500

Kbytes

3.125 Kbytes 6.25 Kbytes 250 Kbits/sec

4359 bpi I

40· F to 20 % to

(29°C) and no condensation. The to

specifications, with continuous vibration

from 5

mm)

g)

0.30

A (typical)

0.48

/1.0

500

12 msec.

350

msec.

30

msec.

SO

msec.

50

msec.

SOO

RPM

8717

approx.

135

TPI

80

160

2

FM,

MFM

6.0W

3.9W

SONY OM·D4440

Not required

8000

POH

30

min.

5 years

3.0 x 10" passes/traek 20,000 times 1 per

10' 10"

1 per 1 per 10" seeks

115°F (5°C 80

unit shall perform

Hz

to

% relative humidity, with a wet bulb temperature

to

100

Hz

(along

OA·D32V

SINGLE DENSITY DENSITY

Mbytes

Kbits/sec

bpi

to

(Power On Hourtime)

or

15,000

bits read

45°C)

all

250

3.125 Kbytes 6.25 Kbytes 250

4094

track time) + (Settling Time)

POH

read/write operations (no seek) according

the

x,

y,

z plane).

I DOUBLE

Kbytes

/500

Kbiu/sec

500

12 msec.

350 msec.

30msec. SOmsec. 50

msec.

SOO

RPM

bpi I

8187

approx.135

TPI 80 80

1

FM,

MFM

S.OW

3.9W

SONY OM·D3440

of

less than 0.5 G (±10 %)

Kbytes

Kbits/sec

bpi

of85°F

REVISION

1

RECORD OF REVISIONS

ORIGINAL

ISSUE

-2-

NOTES

November, 1983

TABLE

Description

SECTION 1. INTRODUCTION

SECTION 2. TOOLS AND MEASURING

2-1. GENERAL AND

a. b. c. d. e. SPECIAL TOOLS

2-2.

2-2-1. 2-2-2. Configuration 2-2-3. Disks

SECTION 3. TROUBLESHOOTING

3-1. BEFORE TROUBLESHOOTING 3-2. TYPES

3-2-1. 3-2-2. Write Error 3-2-3. 3-2-4. Interchange Error

3-3. FAULT DIAGNOSIS

3-3-1. Normal 3-3-2. Check Points

3-4. FINAL CHECK .

3-4-1. 3-4-2. 3-4-3. Check the Drive 3-4-4. Error

SECTION 4. PART REPLACEMENT

4-1. FC-9/FC-14 MOUNTED BOARD REPLACEMENT

4-1-1. Removal 4-1-2. Installation and Adjustment FRONT PANEL ASS'Y REPLACEMENT

4-2.

4-2-1. Removal 4-2-2.

4-3. BLIND

4-3-1. Removal 4-3-2.

.••••.••..•

SPECIAL TOOL General Tools Special

Tools. Measuririg Equipment Disks

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

Expendable and Chemical Supplies

MFD

Checker

•.••..•................•••.......•..•

..•....•.........••.•..•..•...•.•...

OF

ERROR ON A SYSTEM LEVEL

Soft Error

Seek

Error.

Operation.

~

Setting ofSMC-70 Set the Check

Message

.,

.................•..•.•..•........•

.•..•...•.•..........•......•......

Installation.................................

PANEL REPLACEMENT

•..•..•.............••..•....•••.•.

Installation.................................

OF

CONTENTS

\'

..........•..•..•..•..••..•.

INSTRUMENT.S

..••.•..........••..•...•.•.••..•.

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

•. ' ..•..•

..•..•.............••.....•..

II

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

of

SMC-70 Drive Test System." . • . . . • • . .

...•.....•.........•.•............

•................•.

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

•.............•••.•..••.•....

BY

MFD

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

to

Abnormal Operation

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

..•.......•.•.•..•.....

Area.

Unit.

...•...•.........•....•.......

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

. . • . • • • . • . . • • . • . . .

UST

• . • . • • • . . . . . . . • .

" . . . • • • • • . . • . . . . . • .

..•...••.••..••....•

'.....

•.....••...•...•..•.....

....•.•.••....

:

•...•..••• ..

. • . . . . . •

CHECKER

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

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

II

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

•••.•..•..•..•..

..•.•..•.............•

....•..•........•.

.....•.•......••....•..

.......•..•.

.

•.

8

..

8 8

..

8

.•

8

8 9

..

9

..

13 14

IS IS

:

..

IS

•.

IS IS IS

..

IS 20

•.

23

...

23

•.

23

..

25

;.

27

..

29 29

29 29 29 29 29 30 30 30

-3-

Description

4-4. LED MOUNTED BOARD ASS'Y REPLACEMENT. • • . . • . • .

Removal...................................

4-4-1.

Installation.................................

4-4-2.

MAIN

4-5.

_ 4-6.

em

4-7.

4-8.

4-9. CASSETTE·UP ASS'Y REPLACEMENT. • • • . • . . . • . • . . . • . • . 33

4-10.

4-11.

4-12. SENSOR MOUNTED BOARD REPLACEMENT'

4-13. LEAD

4-14. (32V) HEAD

COVER REPLACEMENT 3-5·1. Removal 3-5·2. PAD

ASS'Y REPLACEMENT 4-6-1. 4-6-2. Installation and Adjustment D.AMPER 4-7·1. Removal 4-7·2. Installation HEAD

LOAD 4-8·1. Removal 4-8·2. Installation and Adjustment . . • . • . . . • . . . • • . . • . • •

4-9·1. Removal 4-9·2. Installation and Adjustment . . • • • . . • . . • . . • . . • . • •

WP

ARM

(3-659·609·00) REPLACEMENT

4-1

()'1. 4-1()'2. Installation and Adjustment DC

DISK DRIVE MOTOR (BHC·2101A) REPLACEMENT 4-11·1. Removal 4-11·2. Installation and Adjustment

4-12·1. 4-12·2. Installation and Adjustment

SCREW

COUPUNG ASS'Y I COMPRESSION SPRING

(4-601·083-00» REPLACEMENT 4-13-1. Removal 4-13-2. Installation and Adjustment

(32W) HEAD CARRIAGE ASS'Y REPLACEMENT. . • • • • . • • 4-14-1. 4-14-2. Installation and Adjustment

........•.....•.••.•.••••.••.••.•.•

Installation.................................

Removal...................................

REPLACEMENT. . • . . • . • • • . • . . • . . • . . • . • • . .

•.• ; .••.•..•.••.•••.••....••.•....•

..••.•..•..•..

ASS'Y REPLACEMENT

•••...•••.•..•••••••..•..•....•••..

•••••••••••.•••.•..•..•.•••.•..•.••

I D-DETECTION

Removal...................................

•...•.•.•••.••.•••••...•••.•..••.•.

Removal...................................

ASS'Y (STEPPING

.•••.•••.•••.••.••.•..•..••••.••••.

ARM

ASS'Y REPLACEMENT,

Removal...................................

••••.••.•.•••••••••.••••

•.•••.•.•...•••••.•..••.••

.•.••.••••..••.•..•.••

'

••.••••..•..•..•...

•.•..••.••.•..••.•.

ARM

I COMPRESSION SPRING

•.•...•......•.•.•...

.•••.•.•••...••.••.••.

....•...•.••.••.••.•..

•.•.••..•.•••.••••..•• MOTOR

I LEAD

•••....••..••••.•••.

.••.• : •.••.•..••..••••

.•.••.•.....•••.•.••••

.•••••.••....

SCREW

...••

I

.•

30 30 30

31 31 31 31 31 31

.•

31 31 32 32 32

•.

32

33

••

33

34 34 34 34 34 35 35 35 35

36 36 36

•.

37 37 38

-4-

Description

SECTION

5.

CHECK

AND ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LEAD

SCREW

5-1.

ECCENTRICITY 5-1-1. Tools and Measuring Equipment 5-1-2. Measurement 5-1-3. Adjustment

_

5-2.

PAD

PRESSURE. • . • • . . • . • • • • • • • • . . • • . • • . • . . • • • • •

••••..••• ' •..•..•••••••..•..•.•••

••••••.•••••.•..••••••••.••.•••••

5-2-1. Tools and Measuring Equipment

••..•••••••..••...••••••

••••••••••..••.••

.••.••.•.•••••.••••

5-2-2. Measurement. . . • . . • • . • . . . . • • • • • . . • • . • • . • . .

5-2-3. Adjustment

5-3.

HEAD

COMPUANCE

5-3-1.

Tools and Measuring Equipment _ Measurement

5-3-2.

Adjustment.............

5-3-3.

5-4. RADIAL AUGNMENT

5-4-1. Tools and Measuring Equipment

•...•••••••.•.•...•••.•.•..••..••

•••••••••.•••.•..•...•....•.••.

.•..••.••.•

.•••.••••..•....•.•

• . • • . . • • • . • • . . • . . •

AND

TRK 00 SENSOR

•••.••••..•....•••.

5-4-2. Measurement. • • . . • • . • • • • . . . • . • • . • . . . . . . . . •

5-4-3. Adjustment 5-4-4.

Set

.•.••.•••••.•..•.••.••••••....•••

Up Command , • • • • . . • • • • . • . • • • . . • • . . . • • .

5-4-5. Measurement Command. • • • • • • . • . . • . . • . . . . . . • .

5-4-6. Adjustment Command 5-4-7. Error

Message

••.•.•••.•..•...•.......

.•••.•.•••.••.•••.•......•••..

_ 5-5. STEPPING MOTOR LOAD TORQUE . • . . . • • . • • . . . . . • . •

5-5-1. Tools and Measurement Equipment . . • • . . . • • • . . • • . 5-5-2.

Measurement......

5-5-3. Adjustment

5-6. INDEX

PHASE • • • • • • . • • • • • • . • • • • . . • • • • • • • . . • • • . . 5-6-1. Tools and Measuring Equipment 5-6-2. Measurement 5-6-3. Adjustment

5-7. READ

AMPUFIER GAIN

OFF SET

5-7-1.

..••••..•.••.••.••..•.••..•.••.....•.

Tools and Measuring Equipment 5-7-2. Measurement 5-7-3. Adjustment

5-8. DISK DRIVE DC'

MOTOR SPEED . • . • . . • • . . • • • • • • • • • •

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

.•..••.•.••.•••••.

•..•.•••••..•....••

•..••.•••••••..•.....••.•...•.•.

..•...••.•..•..•..•..•.••...•

AND

READ AMPUFIER

•....••.••.•..•..•.

•..••••.••.••.•..••.••••........

•..•••••.•..•..•..••.•••••.••.•..

5-8-1. Tools and Measuring Equipment . . . . . . . . . . . . . . . . .

5-8-2.

Measurement...........

5-8-3. Adjustment

•...•.•••••.••.•..••

• • • . • . • . . . • • . • • . . • •

:

•••.••

~

• . • • • . • • • •

.••..

,.

. • . .

: • • . • • . . . . • . .

','

'.

• • • • • . • . . .

..

39 39

" 39

39 39

••

39 39

••

39 40 40 40

••

40

..

41

•.

42 42

••

42 42

.•

42

.•

43

" 44

46

..

46

••

46

.•

46

•.

46

.•

47 47 47

..

47

47 47 47 48

••

48

..

48

•.

48

•.

49

-5-

Description

ED

5·9.

HL

ARM

HEIGHT

•.••••.•••.•..••.••••.•••.••••..•

5.9.1. Tools and Measuring Equipment

5.9·2.

Measurement...

5·9·3.

Adjustment.........................

5·10. HEAD CLEARANCE

5·10-1. Tools and Measuring Equipment 5·10-2.

Measurement................................

5·10-3.

Adjustment.................................

5·11. HEAD CLEANING

5·11·1. Tools and Measuring Equipment

SECTION

ED

6.

7.

5·11·2. Cleaning with Applicator • • . . . • . . . . • • . • . . • . • • • •

5·11·3. Cleaning with Cleaning Disk

PARTS LOCATION

PARTS ASS'Y LOCATION

6·1. 6·2. MECHANICAL 6·3. OVER ALL DIAGRAM

6-3·1. Interconnection Diagram

6-4. CIRCUIT DIAGRAM .

6-4·1. Circuit Diagram 6-4-2. Parts Layout 6-4-3. 6-4-4. Parts Layout

6·5. ELECTRIC

6-5·1. ChipParts 6-5·2.

PARTS LOCATION AND LIST (OA·D32V)

PARTS ASS'Y LOCATION

7·1.

7·2. MECHANICAL

7·3. OVER ALL DIAGRAM

7·3·1. Interconnection Diagram

7·4. CIRCUIT DIAGRAM

7-4-1. Circuit Diagram 7·4-2. Parts Layout 7·4-3. 7-4-4. Parts Layout

AND

PARTS LIST

Disk:

Motor Circuit

PARTS

Electric Parts List

PARTS LIST

Disk:

Motor Circuit Diagram

7·S. ELECTRIC PARTS

7·5·1.

Chip Parts Replacement Procedure

7·5·2. Electric Parts List • • . • . . • . . . . • • • . • • . • . • • • • • . •

SECTION 8. TRANSISTORS I DIODES IICS PIN ARRANGEMENT

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

•.•.•.•..•.••••••.•..••

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

LIST (OA·D32W)

•.•.•..•••..••..••.••.•••••

.....•.••...•.•••••••••••••.

• • • • . . • . . • . . • • • • • • • . . • • . • . • • • on

FC·9 Mounted Board

on

FC·9 Mounted Board

Diagram.

on

Disk Motor Circuit

...•..•..•

Replacement Procedure. • • • • • . • • • • . • • . •

•.•.....•..••••...•.••••..•..

......•..••••.....••.•..•..

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

• . • . . • . . • . . • . . • . . • . . • • . • • . • • . • on

FC·14 Mounted Board

on

FC·14 Mounted Board

on

Disk Motor Circuit

•.•.••.•...•.•.•.••••.•.••••••.••

•..••.•..••.••.••.•

...••••.••.••.•••.•

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

..•••••.•.••.•..••..•

.••.••.•..•••••.•..•

.••..•.•••.•.•••.•..•..••

•.....••••..••.••..••••.

. • • . • • • • • . • • . • • • • • .

Board.

; . . . . • • • • • . • . • • • • • • . •

••••••••.••••••••..•

.• , .••.••.•••••.••••••••.•

...•..•..•..••.••••..•...

.••.••..••

Board.

••••

-6-

• . • • • •

"

.•••.• , 53

•..•••••.•.••

•••..•..••••.••

. . • • • • • • • •

; . • • • • • • . .

.•••••••.•..•

•••..•.••.••.•• . • • • • • • . • .

• . • • • • • . • .

; • . . • . • • • • • •

••

. • • . • • • . •

53 53

••

53

••

53

53 53 53

54 " 54 ..

54

55

, 57

" 59

59 .•

61

65

••

67 .•

69

•.

70

••

70

71

75

77

•.

79

•.

81

85

•.

87

.•

89

90 .•

90

•.

91

.•

94

This manual

(Double sided) and OA·D32V (Single sided).

SECTION 2 describes disks and tools necessary for

maintenance.

SECTION 3 provides fault diagnostic procedures

that

may require spare parts

is

a maintenance guide forOA·D32W

or

some adjustments.

SECTION 1

INTRODUCTION

The overall check after removals and adjustments

will be included in this section.

SECTION 4 and 5 cover parts replacements and

adjustments, respectively.

SECTION 6 and 7 consist

drawin~s,

and parts lists.

Introduction

of

circuit diagrams, ass'y

The cassette dummy (4-603-929-00) should be inserted in the OA·D32W when it

transported. Otherwise, its heads may be damaged.

Perform maintenance in accordance with the procedure specified in this manual

follows: (Example)

e.

Fasten the guide shaft with the two screws (PSW2.6 x 6).

Em

f.

Fasten the head board

to

the screw.

paint

Em

g.

Connect the head board iron. (Refer

_

h.

Connect the head board iron. (Refer to Fig. 4-14

_

i.

Fasten head board and terminal shield plate with a screw (PSW2.6 x 8) on the chassis bottm, and then apply

E!D j. Perform the stepping

k.

Install the cassette·up ass'y in place. (Refer

e,

h, i, and k should be carried

Steps Steps

e,

f,

g,

j and k should be carried

to

Fig. 4-14 (c) )

to

the chassis on the

to

the head harness (by four points) with a soldering

to

the head harness

(d»

nut

lock paint

motor

load torque adjustment. (Refer

out

in sequence for the OA·D32W.

out

in

bottom

surface, and apply

(by

six points) with a soldering

onto

it.

to

4-9)

sequence for the OA·D32V.

5-5)

-7-

nut

is

as

lock

General and Special Tool List

TOOLS AND MEASURING INSTRUMENTS

2-1. GENERAL AND SPECIAL TOOL LIST

The

tools, and measuring instruments for performing

maintenance a. General Tools

b.

on

the

OA-D32W/OA-D32V are listed below.

TOTSU Screw Driver (M2.6)

@ Driver 2

e Driver 2 e Driver 4

Tweezers Round Adj Cutter Soldering

Desoldering Metal Braid

DC Power Supplier (+5 V DC

Tester Special Tools

MFD Checker D

SMC-70 System

Rotatory Lead Screw Eccentricity Inspection

Standard

Geared Driver

Pad Weight Hexagon Wrench Power Cable

Interface Cable

mm

mm mm

Nose Plier

Rod

Iron

(20W)

i5

+12 V DC

i5

%,

1.5 A max.)

SMI-70lll SMC-70

KX-13Gl

'AID Converter

25P/26P Conversion Cable

Radial Alignment

Error

(for

SMI-70llA

System Disk

(OR-DS6VA)

Check.system Disk (OR-D87VA)(8-960-009-75)

Knob (fOt Stepping Motor) (J-609-01l-0A)

Disk

Dummy

Cassette-Up Ass'y Installation)

Torque

%,

I SMI-70121 SMI-70l2A

Driver

SONY Parts No.

(7-721 (7-700-749-01) (7-700-750-01)

(7-700-750-04) (7-700-753-02) (7-700-757-01)

(7-700-733-01)

(7-700-75S-02)

O.S

A max.,

(J-609-IS2-0A)

(J-623-002-OA) (J-623-90l-0A)

(8-960-009-74)

Tool

(J-609-l36-OA)

(J-609-l20-0A) (J-609-0 l7-0A) (J-609-124-0A) (J-609-125-0A) (J-609-l30-0A) (J-609-200-0A)

:-050-62)

SECTION 2

c. Measuring Equipment

Oscilloscope Dual

Universal Counter Resolution 0.1 msec. Tension Gauge (Max. Tension Gauge (Max. 20 g)

d. Disks·

Level Disk

lSI

_ OR-D46WA

Alignment Disk

lSI

_ OR-D47WA

Dynamic Inspection Disk

lSI

_ OR-DSIWA

Dynamic Inspection Disk -

lSI

_ OR-DS2WA

Cleaning Disk

lSI

_ OR-D29WA

e. Expendable

Nut Alcohol SonyOU

Sony Grease Bamboo Applicator

OR-D46VA

OR-D47VA

OR-DSIVA

OR-D52VA

OR-D29VA

and

Lock Paint

Stick

Trace

20

MHz

200

g)

+30

30

Chemical Supplies

(J-604-163-OA) (7-732-050-fO)

(8-960-009-31) (8-960-009-40)

(8-960-009-32) (8-960-009-41)

(8-960-009-35) (8-960-009-44)

(8-960-009-36) (8-960-009-45)

(8-960-009-15) (8-960-009-39)

(7-611-0.18-01) (7-622-001-52)

-8-

Special

Tools

2-2. SPECIAL TOOLS 2-2-1. MFD Checker D

(1)

MFD Checker D configuration Main Checker Board

I/F Cable (26pin and 34pin)

Power Cable (2 pieces) Conversion Board (26pins-to-34pins)

NOTE:

The

Conversion Board and 34pin

the

required for

OA-D33W/OA-D33V.

IIF

Cable are

(2) Micro Floppydisk Drive Connection (Refer

Fig.

2-,1)

(3) MFD Checker n function switches

STEP

IN

STEP OUT

•.......

The head continously moves

Steps the head inwards.

.......

Steps the head outwards.

if

the switch is

kept pressed.

•...

Selects

one

of

SIDE SELECT

0

or

(side

side 1) for a double sided. (This

two heads

switch is invalid for single sided versions.)

...•....•.

WRITE

the OSC SEL switch,

OSC SEL

"2F",

........

"IF",

Records, data specified

onto

one track.

Selects such write data

"WCP" (worst case pattern),

EXT.

to

by

or

WCP W 1M

HD

..•....•

patterns when the WCP.

(Refer

to

LOAD

Fig. 3-3 (c), (d»

•......

Selects upper and lower

OSC SEL switch

This

is

used

to

is

set

set the

to

plunger solenoid active.

M,OTOR

ON

...•..

This is used

to

operate

the

Disk Motor.

SELECf

...

DRIVE

The DRIVE

relates checker

CHGRST

to

Drive

IS101)

1

2

3

4

........

as

Selects the disk drive.

SELECf

the DRIVE

switch on the disk drive SELECf

follows:

1

OFF

ON

OFF

ON

Resets

Checker

the

switch on

2

OFF OFF

ON

DSKCHG

the

signal.

600/300

SELECf

board)

(Located in

..........

switch at

"600"

as

SO/70

board)

switch

SELECf

..•.....••

for the OA-D32W IOA-D32V.

(Located in

to

"SO" for the OA-D32W/OA-D32V.

the

middle

of

the

Set the 600/300 SELECf

the

middle

of

Set the

SO/70

the

SELECf

Fig. 2-1 Drawing

and

MFD

Power Cable

of

Connection Between Disk Drive

Checker

II

-9-

Special

(4)

Tools

INDICATOR OSC

SEL

. . . . . . . . . . • . . .

IfF board)

(Four

position

on

the

signals (Five LEDs

..........

of

TRK

00,

TRK

when

board.

WRTPRT,

respectively.

00,

are lit

low

INDEX, The indicators nals are blinks the

LEDs

'.

They

OSC

They

WRTPRT,

when

(true).

the

INDEX

in

the

left

indicate

SEL

switch.

in

the

indicate

RDY,

ROY,

the

respective

The

INDEX

signal is applied

of

the

selected

middle

at

the

DSKCHG,

and

DSKCHG

indicator

board)

of

states

and

IfF

the

sig-

TRACK

POSITION

cator

in

the

Indicates

(5)

Test

Points

TP-I;

"M;:::O';;:T:AO-;:::R-'O""N~

TP-2;

WRT

TP-3;

RD

TP-5;

INDEX

TP-6;

STEP

TP-7;

;';H-;:::D:-L~O="A-:-D;::'

The

GND

to

terminal:

right

the

GATE

DATA

of

the

current

is

(Seven

board)

track

marked

segment

•.. ~ ....•.••

position.

by

"GND".

LED

indi-

MFD

Checker

II

Block Diagram

-10-"

R3B

4.7K

MFD

Checker

II

Circuit Diagram

MFD

Checker

II

Circuit Diagram

...

----

(SIDE

SEL 'FJeSide/)

(sIDE

4

SE/.)

1:

T"9~/c

!esidt9)

R33

SELECT!

~

(SELECT)

IK

DIP

I

l

R3

IIC

lC4

06

DKC

(CHORST) { RZB

d/gdast

J

II<

(--c:----H-GR-ST--.,~

-11-

EXT

WCP

MFD

IF

ZF

Checker II Circuit

Diagram

I

+5

2

GND

3

GND

4 +IZV

RlWEROIJT

I

+SV

Z

OND

3 aND

+lZV

4

(

R3S

II<

OFF

R31

10K

T.P.G

I

MOTOR

3

DKCHG

S

CHGRST

7

I--

V

r-

-

t--

-I-

CI

CZ

'~

0.021

~~

f---

TP4 GND

-12-

9

/I

13

IS

17

19

21

"23

"2S

GND GND GND GND

RDDATA~:jl

TP9

ON

GND GND GND GND GND GND

TPB TP3

2

SELECT &

4

SELECT I

6

8

10 12 14 16

SIDE SEL 18 10

22

24

26

DIRTN

STEP WRTDATA WRTGATE

HD

LOAD

INDEX

TRK

(HI

WRTPRT RD

DATA

READY

Configuration of

SMC-70

Drive Test System

Disks

2·2·2. Configuration

System

TRK

00 Sencer measurement, adjustment, and error

check with

(b).

Monitor

To

of

SMC·70 Drive Test System

configuration for Radial Alignment and

SMC·70 System

is

shown

in

Fig. 2·2 (a),

fa}

Error

Check

Dynamic Inspection Disk/Level Disk

2·2·3. Disks (a) Level disk

These disks are used amplifier gain and off set, The self-read/write

operation can be checked with disks and

(b) Alignment disk _ OR-D47VA

These disks have prerecorded data such eye pattern and INDEX signal adjust

SIDE

0

SIDE

(c)

DYNAMIC INSPECTION

DYNAMIC INSPECTION DISK

These disks can be used in the final check for a drive with the

NOTE: (+) indicates that data has been recorded in the

_ OR·D46VA

ED

OR-D46WA

to

check and adjust

the

SMC-70 System.

ED

the

off-tracking and index position.

SIGNAL

CAT'S EYE 00, 20, PATTERN

INDEX

I

1m

ED

_ OR-D52VA

ED

SMC-70 System.

inner side oftracks. (-)

indicates that data has been recorded in the

outer side

of

tracks.

both

OR-D47WA

to

OR·D47VA

40,45,50,55,79

not

applicable

D'ISK

+30 OR-D5IVA OR-D5IWA

-30

OR-D52WA

TRACK

the

read

of

these

as

Cat's

check and

25, 30, 35,

40

OR·D47WA

SIGNAL

CAT'S EYE PATTERN

INDEX CAT'S EYE

PATTERN INDEX

(d) CLEANING DISK

This type head.

00,20,25,30,35, 40,45,50,55,79

of

TRACK

40

1m

OR-D29VA

ED

disk

OR-D29WA

can

be used for cleaning the

fb} Radial

AlignmentlTRK

00

Senser

-13-

Fig.

2·2

Contents

SIDE

0

SIDE

I

OR·D51VA

Offset

of

+30

all

formatted tracks

not

applicable

tJ.m

Offset

for

all formatted tracks

not

OR·D52VA

of

-30

applicable

-14-

tJ.m

for Offset

OR·D51WA

of

+30

of +30

tJ.m

all formatted tracks

Offset

all formatted tracks

OR-D52WA

for Offset

all formatted tracks Offset

for

all

formatted tracks

of

-30

tJ.m

for

SECTION 3

TROUBLESHOOTING

SECTION 3 describes the methods shooting. 3-2 refers system level. 3-3 describes normal operations and the

check points for abnormal operations. These descriptions define the Error Spot under operating conditions.

to

several errors specfied

3-1. BEFORE TROUBLE SHOOTING

The following procedures are recommended

if the drive

1)

2)

3)

4) Defective disk. Check that same trouble occurs

5)

6) Influence

7)

is

really faulty

Incorrect operational procedure

program error Poor connection with host system (esp. GND-

related connection, frame GND, etc.)

with other disks.

Environmental conditions (where electrical noise

easily jumps into signal)

of

Wrong supply voltage

or

not:

of

host system

strong magnetic field

3·2. TYPES OF ERROR ON A SYSTEM 3·2·1. Soft Error

Soft error are caused

1)

Dirty head

2)

Electrical noise

3) Tracking error

4)

Poor connection with system

(GND-related connection)

5)

Incorrect motor speed

6) Incorrect head compliance Clean the head first. Check for index pulse interval

and head compliance and then read error spot more than several times. the adjacent track then return this time, check radial alignment. (Refer

If

to

not readable yet, the error

by;

If

not

readable, move the head

in

the

same direction

desired track, and read.

is

not

of

as

If

recoverable.

trouble-

in

to

see

LEVEL

before,

readable

to

5-4)

Before Troubleshooting

a

to

3·2·2. Write Error

To determine whether the disk

failing.

the check that there still exists write error. does error exists with use write error.

disk should be replaced

not

exist any more, remove the old one.

of

any rlisk, drive might cause

or

the drive

by

other disks and

If

3·2·3. Seek Error

Seek error comes from:

1) Head movement

noise jumps

2) Head driving system might be at fault. re-readable after re-calibration, drive might be at fault.

is

incorrect because ellectrical

into

signal.

3·2-4. Interchange Error

If

data written on another drive, error exists.

Interchange errors are caused by;

I) Head

2) Motor speed

3) Optimum head

compliance are not obtained.

4) Chucking mechanism does not work.

3·3.

FAULT

3-3-1 operations procedUres.

3-3-2 describes check points for abnormal tions which come procedures.

on

one drive

is

but

not

is

not

properly positioned.

is

not correct.

output

DIAGNOSIS BY

describes check method for normal

in

accordance with

out

in accordance with the above

readable correctly

by

other drives, interchange

level and offset

MFD

CHECKER II

the

predetermined

3·3·1. Normal Operation

Pre-setting:

1)

Refering

to

Fig.

2-1

(Micro Floppydisk Drive

the

drive

to

on

the

Checker

MFD

disk drive

II

Connection), connect

II.

2)

Set the slide switch

"}".

3) Set

all

switches in the

(SI01)

MFD

write error

If

write

If

it

is

not

and

head

opera-

Checker

to

"OFF".

is

-15-

Normal· Operation

Procedure

1

2

3

4

5

6

7

8

Step

1.

Power

On

Drive

Select Check after checked,

the

disk drive

is

to

selected. D and the slide switch

Operation during CASSETTE IN

(Alignment disk

MOTOR ON switch on

CHGRST switch on

HD

LOAD switch on

Stepping

Track positioning

be kept

is

to be inserted.)

The head there.

2. The disk

1.

The TRK 00, when the DRIVE

follows:

MFD Checker n

1

OFF

ON

OFF

ON ON

C?therwise, these indicators go out.

1.

When the cassette the plunger loaded in sequence. The motor then stops operation.

1.

The motor rotates. (The INDEX indicator on the Checker II blinks.)

2. The TRK light. (The RDY indicator, however, lights in about seconds after the disk

1.

The

DSK

CHG

the

1.

The plunger Solenoid

mJ

2. The plunger Solenoid

IE

down.

3.

The clearance between the HL arm and pad arm

shown in Fig. 5-9.

1.

When the STEP IN switch

tinuously stepped in until it arrives at TRK 79.

When the

continuously stepped

2.

When the head the TRK

1.

Such a Cat's eye pattern signal can be obtained at head accesses TRK 20, TRK 30 loscope Checker II.

Note:

Such a signal head

accesses

Em

2.

SIDE SELECT switch

as

signal on

the disk drive. When the head accesses TRK 40.

3. Set amplitude L in Fig. read amplitude R in Fig. Calculate

Operation

automatically returns

motor

remains stopped.

WP,

SELECT switch on the

2

OFF OFF

ON

is

pulled out.

00, WRTPRT, RDY, and DSKCHG indicators

CHG. indicator goes

RST switch

STEP OUT switch

is

set

00

indicator does not

is

triggered by the signal at

as

shown

TRK

40.

shown Fig.

the

OFF

to

TRK

00

and stops

and DSKCHG indicators light only

(S 1 0 1) on the disk drive are set

Disk drive

IS101)

1

2

3 4

inserted, the motor

The head

is

inserted.)

out

is

pressed.

is

set on, and the pad lifts down. is

set active and

is

pressed, the head

out

until it arrives at TRK 00.

to

any track other than TRK 00,

ligh(

CNI07-1

on

in

Fig.

3-1

(b)

to

side

1.

3-1

(b) can be obtained at

3-1

(a) to 5 divisions, and then

3-1

(a).

TRACK value, refering

MFD

Checker

is

rotating and

is

loaded and un-

MFD

at the moment when

the

head lifts

is

set

is

con-

is

pressed, the head

as

slivwn

in

Fig.

of

obtained

to

3-1

the

when

CN

Table

MFD

107-1

the disk drive when the

or

TRK 50. The oscil-

TP-5

can

be

such a Cat's eye pattern

as

1.5

as

is

(a)

the

3-1

-16-

Normal Operation

Procedure

9

Motor speed

Step

(c) and (d), in accordance with R in Fig. 3·1 (a).

Then, obtain the humidity-compensated

the

value from The compensated

value + 0.2 (50 - H)(39.5 - 0.1875N - 1.5S)/33.5

following expression:

Where;

H:

Relative humidity (%)

N:

Track number

S: Side ID number

Side 0: 0 The compensated

following formula.

-20 ~ Compensated OFF TRACK value ~ +20 For

R = 4.5 in the OA-D32V, the apparent OFF TRACK

[EX]

is

as shown in table 3·1 (d).

value Assuming

= 4.5,

H =

60

%,

N = 40,

pensated OFF TRACK value

This satisfy the formula.

(a)

Fig. 3·1 Cat's Eye Pattern Signal

0.0 0.1 0.2

2:

34.5 32.9 31.3

3:

20.1 S.9 8.0 7.0

4: 5:

0.0

6:

-7.3

7:

-13.4

S:

-IS.6

9:

-23.0 -23.4

0.0

2:

36.9

3:

21.5

9.6

~:

5:

0.0

6:

-7.8

7:

-14.3 -14.9

S:

-19.8

9:

-24.6

17.7

IS.9

-O.S

-1.6

-S.O

-S.6

-14.0

-14.5

-15.1

-19.5

-19.0

35.1

20.2 18.9 17.6 16.4 15.2 14.0 12.9 11.7 10.6

-0.9 -1.7

-S.S

-20.4 -20.8

-25.0

-20.0 -20.4

-23.8 -24.2

0.1

0.2 0.3 0.4

33.4 31.S 30.2 2S.7 27.2 25.7 24.3

S.S

7.5

-9.2 -9.9

-15.5

-16.1

-21.3

-25.9

-25.4

Table 3·1.

1.

The Motor speed can be measured at TRK35, in TP·5 on MFD

Checker

It

should be 100 msec ± 1.5 msec.

II

Operation

OFF TRACK

OFF TRACK value = OFF TRACK

1:

1

Side

...

(1)

OFF TRACK value should meet the

. '

...

(2)

'al1d

S = I,

we

can obtain the com-

as

2.6 from expression (1).

0.3 0.4 0.5 0.6 0.7 0.8

29.S 28.3 26.S 25.4 24.0 22.7 21.4

16.5 15.3

6.1

S.I

-2.3

-3.1

-9.3 -9.9

-15.6

-24.6

(e)

OA·D32W

6.5

5.5

-2.5

-3.3

-10.6

-16.6

-21.S

-26.3

(d)

OA·D32V

Apparent

(b)

14.2

13.1

-4.6

-11.1

-16.6

-25.4 -25.7

0.6 0.7

3.6 2.7

-4.9

-11.9 -12.5

-22.S

-27.1

off

Track

12.0 11.0 9.9

-5.3

-11.7

-17.1

-5.6

-23.2

-27.5

4.2 3.4

-3.S

-10.5

-16.1

-20.9 -21.3 -21.7

-25.0

Q,1

~

-4.1

-11.2

-17.2 -17.7 -18.3

-22.3

-26.7

2.5

1.6 0.8

-6.6

-6.0

-12.3

-12.9

-17.6

-IS.I

-22.2

-22.6

-26.5

-26.1

0.8

1.8

-6.4

-7.1

-13.7

-13.1

-IS.8

-19.3

-24.1

-23.7

-27.9

-2S.3

with an universal counter.

0.9

22.9

0.9

-17-

NormalOperation

Procedure

10

11

12

13

Step

Index position

TRK 00 sensor level

Cassette

out

(When the alignment

disk is ejected.)

Write (When the level disk

is

inserted)

Operation

1.

The following waveform can be obtained on TRK 40.

Index

signal

(TP-5)

Output

signal

(CNt07-1)

1.

I

il

-100

Fig_

3-2

Index

Move

the head until

the head passing TRK

J,lsec_::::;

T::::;

+100

Phase

Specification

it

arrives at TRK 01. (Do not move

01.

If

the head arrives at TRK 00,

through the Cat's eye pattern signal

the head

is

to

and then The

output

signal level

Move

the head until it arrives at TRK 00.

2. The

output

signal level

1.

The DSKCHG indicator lights.

1.

When the WRITE switch

be set on the TRK 01.)

of

CN

I 07-5

of

CNI07-5

is

pressed and

"WCP (MfW)" are written, the corresponding waveform

CN

1 07-1. (Refer

I

(a)2F

can be obtained at

J,lsec.

is

to be rechecked

is

3 V or more.

is

0.7 V

"2F",

to

Fig. 3-3)

(b)

1F

or

less.

"IF",

or

(c)WCP(M)

Fig_

3-3

2F,

IF

and

WCP

Waveforms

Em

2. Set the SIDE SELECT switch to side 1, and "IF",

or

"WCP (M/W)" are written, the corresponding waveform can be obtained at CNI07-1. (Refer Fig. 3-3)

-18-

(d) WCP(W)

"2F",

to

Normal Operation'

Procedure Step

14 Output level

0.2V

-0.5

V

Peak Shift

15

Fig.

3·4

(a)e

Output

Operation

1.

Move

the head until it arrives at TRK 79, and then write "2F". The output signal

(e

0.2 to 0.5 Vp·p).

level

of

CNl07-l

The following read data can be obtained at TP-3 on checker. (Refer to Fig. 3-4 (a) (b) )

Em

2.

Set the SIDE SELECT switch to side Move

the head until it arrives at TRK 79, and then write "2F". The

output

signal level

of

CNl07-l

The following read data can be obtained at

checker. (Refer to Fig. 3-4 (a) )

Output

Signal

RDData

(b)

EE1!I

Signal and

RD

Data Waveforms

1.

Write "WCP(W/M)"

Such waveforms obtained at

The waveform

~1

eNl07-l

ontoTRK

as

shown in Fig.

and TP-3, respectively.

in Fig.

3-5

(a) (b) shows the read data

79.

is

0.4 to 0.8 Vp·p

1.

is 0.2

to

0.5 Vp-p.

TP-3 on the

3-5

(a) (b)

can

the

be

at

.

Less

than

2.43

Less

IlSec.

than

2.43 jlSec. (with OA·D46WA)

(a)

(with OA·D46VA)

Fig.

Em

2. Set

-19-

Output

Signal

(CNtOl·t)

RDData

(Tp·3)

3·5

Waveforms

at

TRK

the

SIDE SELECT switch onto TRK 79.

(W/M)" Such waveforms obtained at

CN The waveform TP-3.

L-J

Less

than 2.43 Ilsec. (with OA·046VA)

Less

than 2.43 jlSec. (with OA·D46WA)

of

Output

79

Signal and

to

as

shown in Fig.

107-1

and TP-3, respectively.

in Fig. 3-5 (a)

(b)

side

3-5

shows

RD

Data

1.

Write "WCP

(a) (b) can be

the

read data

at

Check Points

to

Abnormal Operation

3-3-2. Check Points

Step

Power

On

Drive Select Check after

checked,

selected.

during

inserted.)

ON

on

the

to

be

IN

disk is

disk drive is kept

Operation CASSETTE

(Alignment

to

be

MOTOR switch

to

Abnormal

I.

2.

3.

4.

1.

2.

3.

I.

2.

Operation

Abnormal

for

Each

The

head

~oves

the

center

The

head

is

but

it

is idling

the

outmost

The

head moves

uncertainly.

movement constant.)

The

disk

motor

The

I/F

indicators are

put

out

for combination, are lit for

the

combination.

After

the cassette is

inserted,

the

not

loaded

does

not

rotate.

The

head is loaded,

the

motor

rotate. The

disk

motor

but

the

head is

loaded.

The

disk

motor

rotate.

The

IJF

indicators light.

Operation

Step

tow!ll'd

of

the

Drive.

stepped

around

track.

(The

is

not

rotates.

the

selected

or

they

unselected

head is

and

the

does

not

rotates,

not

does

out,

head

motor

but

do

not

CheckPoint

(defective place)

I.

TRK

00

sensing circuit.

1.

TRK

00

sensing circuit.

2. Check

if

the

TRK

outside.

motor

drive system.

TRK

00

is detected in

drive system.

CNIOI-5, and

from

the

not

motor.

height.

drive system.

indicato!S is

IfF

indicators

00

CPU

motor.

properly

is

Mounted Board is installed a

little

bit

1.

Stepping

NOTE:

If

no several seconds after power is

turned on, the matically stops the stepping motor and thereafter accepts no

instructioh.

1.

Disk

motor

1.

Drive select circuit system.

1.

The

CSTIN signal does

appear

at

not

sent

2.

The

cassette is

placed.

1.

The

disk

1.

Plunger solenoid ·or system.

2.

Plunger stroke.

3. Head Clearance.

4. HL

arm

1.

Disk

motor

1.

If

no

I/F

lit,

the

drive select

conducted.

2.

If

some

the

IfF

signal circuit

defective.

Sensor

its

not

are lit,

is

auto-

not

it

drive

Thcl signal

The

signal

A voltage

of+12 CN I 05-2 during Voltages

at

of

CNI05

10 ± 0.1 msec intervals.

The

signal CNIOI-5

are

Low

level

The

signal

selected

combination

during

normal

signal

ofICIOS-3

unselected Refer

to

is

5-S.

Refer

to

5-S.

The

signal waveforms shown below

appear

of

CNI04-2, During

normal

Refer

to

5-10.

Refer

to

5-9.

The

signal

or

the

disk

+12V_a

+5~-----'\L.-..

CN104.3f

OISK

CN104·2

"""5

It----15-m-s-ec-.

Remarks

of

CN

103-2 is Low

of

CN 103-2 is High

V appears

normal

3 pin

through

are switched

and

ofICIOS-3

combipation.

of

operation.

CNIOI-?

motor

c

,

IN

V

Fig.

for

is High level

is

Low

3.

(Refer

is defective.

_______

3·6

level

at

operation.

6 pin

of

in

CNIOI-?

the

The

level for

to

Fig.

3~6)

is High level,

r--

---f

l

1

-20-

Check Points

to

Abnormal Operation

Step

CHGRST switch

HD

LOAD switch

Stepping

Abnormal Operation

1.

The DSKCHG indicator

on

does

on

1.

The not

1.

The not is functioned.

Each

Step

for

not

go out.

plunger solenoid is

energized.

step operation does

function

at

not

all,

smoothly

Check Point

(defective place)

I.

The

CHGRST signal (CN I 09-3)

is

not

sent to

the

CPU

Remark.

(lCI01-9).

1.

The

HD

LOAD signal

(at

CNI09-14) is

the

CPU

2. IC

III

3.

IC

101

1.

or

Stepping

it

or

stepping

not

(ICIOl-6).

motor

drive system

motor

sent

itself.

Waveforms are;

to

HD LOAD

IC101-33

IC101-34

In ICIOI-40 is High level

of

normal operation

I

Fig. 3-7

normal condition, the signal

for

about

of

I msec after the STEP signal enters.

DC

voltage

During this time, a +12 V is applied

to

the stepping

of

motor.

TRACK,. 0,4,8, 1,5,9, 2,6,10, 3,7,11,

•••

••.

•.•

72,76. 73,77. 74, 78.

75,79.

Po(ICI06-5)

H

L L H

PI

P2(1CI06-11) P3(1CI06-13)

(ICI06-9)

H L H

L L

L H H

L

H

'H

Track positioning

1.

The

ratio right signals does meet

the

2.

No

signal appears.

of

the

left

to

not

specification.

2.

The

harness

(~

e,

the

TRK

00 sensor) is internally attached to

other

mounting parts.

3.

Obstacles are attached

to

the

slide guide shaft.

1.

A voltage

of

+5

V is

not

to

the stepping motor.

(CNI05-I,2)

2. Radial alignment I.

Read amplifier circuit. Signal appeance must be confirmed

applied

is

incomplete. Refer

to

the

with ICI03-16,

5-4.

sequence

ICI03-17,

ofCNI07-1,

ICI03-I,

ICI03-2, ICI04-7, ICI04-8.

2; A seek

error

-21

has occurred_

-

Refer

to

3-2-3.

::heck Points

Step

Motor

speed

Index position

TRK

00 sensor level

Cassette out (When the alignment disk is

ej

ected.)

Write

(When the level disk is

inserted.)

to

Abnormal Operation

Operation

Abnormal

for Each Step (defective

I. The motor speed does not

meet the specification.

I. When the cassette is

inserted twice

positions

is

varied ±40

more.

2. When the cassette is set twice on

each track ±40 Ilsec shifted positions,

however, do not

the specification.

I. The head returned from

inside track does not stop at TRK goes to TRK

re-calibration

carried out.

1.

When the casette ejected, the DSKCHG cassette ejection. Check indicator does not light. properly.

I. The waveform signal

cannot be re-written.

or

on

each track

p.sec

or

more, positions

is

or

less. The

0 I and it 00 where

is

more,

varied

meet·

to

is

1.

2. The pad pressure

1.

or

1.

be

1.

2.

3.

1.

2.

Check Point

The disk motor

The chucking mechanism the disk moter

The INDEX phase

mis-adjusted.

The TRK 00 sensor positioning is

improper.

Signal has not been detecte'd

the D-detected arm moves

Check

I circuit board operates

properly.

Signal appearance must be

confirmed with the sequence ofICI01-3,IC112-I, IC112-3, CNI09-3.

Write circuit

Check whether write data is applied

is

if

the disk motor

or

not.

place)

defective.

is

Remarks

Refer

to

5-8.

Refer

to

5-2.

of

Refer

to

4-11.

Refer

to

5-6.

The signal level

is

3 V

or

more

normal operation. (Refer to 5-4.)

The signal

if

Low level.

iEEChange

In

normal condition

circuit, terminal voltage

-12

is

of

ICIOI-46 is High level, terminal voltage High level and

Em

at

of

CNIOI-S remains

the SIDE SELECT

SWITCH

to conduct the operation specified in item OPERATION.

Low level, terminal voltage

Collector voltage approx. +12·V.

e When SIDE SELECT switch is

set

to

side 0, collector voltage

of

Q 107

is

When it is set

collector voltage approx.+12

of

CNI07-5

TRK

01

during

side I and then

13-1

of

NORMAL

of

write gate

of

CN

oflC

11

5-4

ofQI06

approx. +12

to

side

I,

of

Q 106

V.

I 09

is

V.

is

-22-

Abnormal

Step

Output level

Peak Shift I. The shifted peak value

FINAL CHECK

3-4.

3-4-1. Setting of SMC·70

a.

Place auto start switch located on the left side panel

b.

A conversion cable for IfF (25 pin connected to rear panel Unit).

3-4-2. Set The Check Area

To

display original test condition

1.

The does not meet the specification.

2. Read data does not appear.

does specification.

to

"DISK".

Description

Operation

for Each Step

output

signallevel

not

meet the

to

of

26 pin)

SMI-7012A(Drive"

of

the disk.

Check Point

(defective place)

1.

Read amplifier gain adjustment is

incomplete.

1.

ICI03 (MC3470AP)

I.

When the value in both "WCP W"

and "WCP M" do meet the specification, the head

is

defective.

2.

When difference in value Refer to 5-7.

"WCP

between

"WCP

M" is remarkably

off set adjustment

Co

Connect. the drive under test

cable and set the DRIVE

of

d. Error check system disk

is

~lliJllil!ID

of

e.

After word

drive check program will start.

Keying

ITl[Q

IRETURN!

not

W"

and

Big,

is

incomplete.

the unit to

SMI-7012A and power

"2".

"I\>"

.....

Floppy Disk Analysis v3.0

.....

[Test condition) drive C

Minimum track Maximum track

Sector

Minimum Maximum sector

Sector size

Single

or

Double side?

Read & Write retry Seek & Home retry

Final Check

Remarks

Refer to 5-7.

Refer

to

4-14.

to

the conversion

SELECT switch(SIOI)

is

inserted into drive A

is

turned on.

appears on CRT display,

Display

.....

..

...

0

79

16

256

S

0

1

To change any Type the minimum track

[EX)

In

case

it

is

TRK 00.

of

test conditions.

to

be tested.

#Do

you want

conditions? (Y,

[XJ

IRETURN! +Minimum track

@)

I RETURN! +Maximum track 79

-23-

to

change these test

N)

=

o [track)='*

[track)=q

Final Check

Description

Type the maximum track

[EX]

In

case it is TRK 79.

Type the minimum sector

[EX]

In

case it is 1 sector.

Type the maximum sector to

[EX]

In

case

it

is

16 sector.

Type the number tested.

[EX]

In

case it is 256 bytes.

Type the initial name letter (S-single sided, double sided)

[EX]

In

case it

Type the number

conducted when read error

[EX]

In

case

Type the number conducted when the error occurs.

[EX]

In

case no retry

is

double side.

it

is

once.

of

to

be tested.

to

be tested.

be

tested.

of

byte size per a sector, to be

disk surface

of

is

desired.

to

be tested.

of

how many retry must be

or

write error occurs.

how many seek retry must be

Keying

IlIl2l

IRETURNI +Minimum sector

ill I RETURN I +Maxirnum sector 16 [sector]==>

ill!§]

IRETURNI +Sector size

~~

IRETURNI +Single side

D-

[Q]

IRETURNI +Read & Write retry

256

or

Double side?

ill I RETURN I +Seek + Home retry

•••

Command table

r : = read test w :

= write test

: = show disk condition

= set test condition

s : h :

= help

= finish & exit to

e :

Display

[sector]==>

1

[bytes]:=>

<S,

1

[times]==>

o [times]==>

•••..

CP

1M

D>==>

-24-

Check the Drive Unit

3-4-3. Check

The test item from command table must be chosen.

1.

2.

NOTE: Before writing data pattern on a level disk,

the

Drive Unit

Description Keying

To read dynamic inspection disk or pre-record-

ed data disk.

Type the number

tracks and sectors pre-set in item 3-4-2.

[EX]

In

case

it

Insert the disk to be tested.

Read test starts under the test condition pre-set in item 3-4-2.

te~t

ends.

The

To

write

the

formatting (initialization) can be mode automaticaly. the processing, the error under title

of

is

once.

data

on

a level disk.

If

the some error occurs during

of

"Initialize Test End".

pass-count for reading

will

be displayed

00

\ RETURN \

5YI\RETURNI

Display

•••

Read Test

#Enter

#Test

<<Pass-count =

In-ward +Track Out-ward (trkmax--+trkmin) +Track =

•••

Read Test End

[I]

Total of Seek error:

+Seek +Seek error: 0 times

[2] Total

+10, DATA +10 +DATA +Lost data error: +Byte data verify Err:

[3] Total

+10, +10 +Lost data error: +Write Protect error: +Write Fault error:

...

Write Test

•

••

Write data pattern

Pattern No. I Pattern Pattern Pattern

#Select pattern number:

•••

pass-count = i

disk ready? yes -

(trkmin-

-+

trkmax)

...

hit [Return]

I»

=

•••

o times during 00160 times seek.

eRe

error: 0 times

of

Read error:

o times during 02560 times read.

ADM

eRe

of

ADM

eRe

No.2 No.3 No.4

missing: 0 times

error: 0 times

eRe

error: 0 times

0 times 0 times

Write error:

o times during 00000 times write.

missing: 0 times

error: 0 times

0 times 0 times 0 times

...

•••

...

Random data (all data random)

...

Random data (1st byte-OAAh)

...

Worst pattern (DBh, 6Dh, B6h)

...

User definable

[I,

2, 3, 4] =

To select

the

[EX]

In

case it

is

The test ends.

data pattern.

worst pattern.

~

\ RETURN \

\ RETURN

-25-

I

#Now,

You select pattern No: 3

#Test

disk ready? yes - - hit [Return]

•••

Write Test Start

+Track = End

•

••

Write Test End

•••

...

Check the Drive Unit

Description

[EX)

In case

it

is

random data. (all data random.)

Type any key.

The test ends.

[EX)

In case it

is

random data. (1st byte = OAAh)

Type any key.

The test ends.

[EX)

In

case

it

is

user definable.

to

Type the data

[EX)

In case it

NOTE: Only 2 characters can be assigned for each byte;

the character The Key end

of ters (ten kind assigned.

be written it.

is

"DA".

of

more than two

IRETURNI

each byte. Maximum twenty (20) charac-

of

byte

is

-10th

disregarded.

bytes) can be

must be depressed at the

The test ends.

3. To display the test condition.

-4.

To

change any

3-4-2)

of

test condition. (Refer

to

item llillRETURNI +Minimum track 0 [track) ==>

5. To display the command table.

6.

To

end. the test

or

retest from the first step.

Keying

ill/RETURNl

~

/RETURNI

illlRETURNl

[A]

/RETURN/

[1]

IRETURNI #Now, You select pattern NO: 4

#Now, You select pattern No: 1 #Hit

any key after

#Test

disk ready? yes

...

Write Test Start

+ Track = End

...

Write Test End

#Now,

You select pattern No: 2

#Hit

any key after

#Test

disk ready? yes

...

Write Test Start

+Track = End ...

Write Test End

+Enter hex data [1st Bytes) ==>

Display

few

...

•••

few

...

[QJOO

\RETURNI IRETURNI

IRETURNI

ill]

\ RETURNl

lID

IRETURNl

+Enter hex data [2nd Bytes) ==> #Test

disk

•••

ready?--hit

Write Test Start

...

+Track = End

...

Write Test End

[Test condition)

Minimum track Maximum track

Minimum sector Maximum sector

Sector size Single

or

Double side? S

Read & Write retry Seek & Home retry

...

Command table

...

r : = read test w :

= write test

1 :

= show disk condition

s :

= set test condition

= help

h : e :

= finish & exit

to

CP/M

A>

seconds =

-0+

hit [Return)

seconds

-0+

hit [Return)

[Return)

=>

==>

drive C

256

79

16

0

1

0

-26-

Error Message

3-4-4. Error

Kind

of

ERROR

SEEK

ERROR

READ

WRITE

ERROR

Message

Error

Seek CRC error Stepping motor load torque Seek error

10,

data,

lD, data CRC error

10

ADM

lD

CRC error

Write protect error Condition is set to write protect.

I

Message

ADM

missing. Read circuit

missing

Considerable Cause

high. Stepping motor circuit

Off track, 'chucking trouble, wrong head compliance.

No write function. (write circuit Confirm the waveform is

out

of

order, no formatting)

Off

track wrong head compliance, Confirm the radial alignment and

chucking trouble,

Countermeasure

(Confirmation

is

too Confirm stepping motor load torque.

is

out

of

order. Confirm the function

is

out

of

order. Confirm the read circuit.

or

disk. TRK 00 sensor (Refer to 5-4.), head

5·5.)

(Refer to

motor

circuit.

(at

first check RF out put)

Confirm head compliance, (Refer to 5-3.) chucking mechanism or radial alignment and TRK (Refer

to

5-4).

(CNl07-l)

compliance (Refer to 5-3.), chucking mechanism.

Confirm Media, write protect circuit or

write protect mechanism.

I Adjustment).

of

stepping

00 sensor

of

RF output.

or

-27-

MEMO

-28-

FC-9/FC-14

PART REPLACEMENT

4·1. FC·9/FC·14 MOUNTED BOARD REPLACEMENT 4-1·1. Removal

a.

Remove the three screws (PSW2.6 x 6) which fasten both the FC-9/FC-14 Mounted Board and shield plate to the chassis ass'y. (Refer to Fig.

b.

Remove

all excessive force (Refer

Bosl-t-+_".q,.:::),.

the connectors. Do not apply any

to

the head harness (CNI06). .

Fig~

4·1

(b»

fa}

4·1 (a) )

SECTION 4

b. Insert the harness between the chassis ass'y and

c.

d. Index phase adjustment. (Refer 4·2. FRONT PANEL ASS'Y REPLACEMENT

4·2·1. Removal a.

4-2-2. a.

b. Install the LED into the square opening within the

c. Fasten the chassis ass'y

NOTE

Mounted

7p (To the disk motor) 6p (To the stepping motor) CN105

(V)

5p

(To the head)

(W) 6p (To the head)

3p (To the plunger)

3p (To LED)

3p (To

FC·9/FC·14 Mounted Board and fasten the FC·9j FC·14 Mounted Board and shield plate with the three screws

Read amplifier gain and offset adjustment. (Refer to

5·7)

Remove the two screws (PS2.6 x 10) from the

bottom

of

front panel ass'y. (Refer

Installation

Install the eject button and compression spring

onto

the front panel ass'y.

front panel ass'y, and then press the front panel

to

the chassis ass'y.

ass'y

the

bottom

10). (Refer

1:

Install both the chassis ass'y and front panel ass'y

in place so that these assemblies closely contact.

2:

Do ness), during the installation gap

between these assemblies.

Board Replacemen1

Harness

tp.e

TRK

00

sensor)

(PSW2.6 x 6). (Refer to

the chassis ass'y and then remove the

surface with the two screws (PS2.6 x

to

not pintch the harness, (especially head har·

to

Fig. 4·2)

FC·9/FC·14

Mounted Board

CNIOI

CNI06

. CNI06

CNI04 CNI02 CNI03

Fig.

to

5-6)

to

Fig. 4-2)

the front panel ass'y

le,

the

head harness

PS2.6x10

4-1)

on

fb}

Fig.

4-1

FC·9 / FC·14

4-1·2. Installation and Adjustment

a.

Set the respective connectors to the FC·9/FC·14 Mounted Board.

Mounted

Board

-29-

.

CDmp,"",~

Spring

E"'Butt

..

r-l~.;:

;~r

~

~ i ~

FC.9/FC'14 Mountlld Board

~~~~II

~

Front

pa!,AIS'Y

Fig. 4-2

.

~

Front

~

D'_

GLSPR20

.

Panel Ass'y Replacement

Blind Panel Replacement

4-3. BLIND PANEL REPLACEMENT 4-3·1. Removal

a.

Remove the front panel ass'y. (Refer to 4-2)

b.

Remove the blind panel by twisting it into the arrow while pressing its both edges. (Refer 4-3)

4-3·2. Installation

a.

Press the blind panel toward the cassette-up ass'y and latch the two tabs onto the disk holder.

to

Fig. 4-3)

(Refer

b. Install the front panel ass'y. (Refer-to 4-2)

Fig.

4·3

Blind Panel Replacement

4-4. LED MOUNTED BOARD ASS'V

REPLACEMENT

4-4·1. Removal

a.

Remove both the FC-9/FC-14 Mounted Board and shield plate. Disconnect (Refer to Fig.

4-4 (a) ) b. Remove the front panel ass'y. (Refer c.

Remove the LED Mounted Board ass'y from the chassis ass'y.

CN

102 connector.

to

4-2)

4-4·2. Installation

a.

Peel

off

remover from the cushion and set the

LED Mounted Board

as

shown in Fig. 4-4 (b).

b. Install both the FC-9/FC-14 Mounted Board and

to

Fig.

shield plate. (Refer

c.

Install the front panel ass'y. (Refer

Fig.

4·4

LED Mounted Board

PS2.6x

(aJ

REO

BLK

(bJ

to

LEO

4-1)

10

Mounted

Board

Ass'y

to

4·2)

Ass'y

Replacement

-30-

Main Cover Replacement

4-5. MAIN COVER REPLACEMENT 4-5·1. Removal

a. Remove the screw

main cover from the chassis ass'y, the main cover.

4-5·2. Installation

a.

Install the main cover so is set in accordance with the arrow, and then install the main cover with the screw

(Refer

to

Fig. 4-5 Main Cover Replacement

ED

4-6. PAD ASS'V REPLACEMENT

4.0-1. Removal

a. Remove the main cover. b. Lifting the pad arm tip

not

be applied

may

pad

ass'y

the Fig. 4-6 (a»

4.0-2. Installation and Adjustment

a. Pick

up

pad lightly and insert pad arm ass'y. (Refer

b.

Pull

down is arranged in parallel with Fig. 4-6 (b).

(82.6

x

(Refer

to

Fig. 4-5 )

that

Fig. 4-5)

(Refer

so

that

to

the pad arm ass'y. remove

by

pressing its rear part.

holder

(not

pad itselO

pad

ass'y

to

Fig. 4-6 (a) )

the pad arm ass'y, and check

5)

which fastens the

and

then

remove

the position marked

(82.6

to

4-5)

any

excessive force

(Refer

of

into

the

pad ass'y

the location

if

the

head as shown

x 5).

to

on

pad

in

c. Perform the pad pressure adjustment.

5-2)

d. Perform the head clearance adjustment. (Refer

to

5-10)

e.

Perform

the

HL

5~)

f.

Make the head clean.

g.

Perform the head compliance adjustment. to

5-3)

h. Install the main cover. (Refer

Pad Holder

arm height adjustment.

(Refer

to

Pad

Arm

P~~~

Pad

Ass'y

ra)

Fig. 4-6 Pad

E12I

4-7. DAMPER REPLACEMENT 4·7-1. Removal

a.

Remove

b.

Manually set (Refer

to

c. Remove

damper the damper.

Ass'y

Replacement

the

main cover.

the

Fig. 4-9 (a) )

the

screw (PS2.6 x

to

the head load ass'y. and

(Refer

machine

to

Fig. 4-7)

(Refer

into

6)

(Refer

.

5-11)

4-5)

Ass'y

to

4-5)

the

Disk-In mode.

which fastens

then

(Refer

the

remove

to

-31-

tlead Load Ass'y Replacement

4·7·2. Installation

a.

Insert

the

damper arm tip sette holder and the

head load ass'y. (Refer

b. Install

the

c. Make.the head clean. (Refer

Fig.

4-8.

HEAD

Removal

4-8·1.

a.

Remove

and shield

. b. Remove

c. Manually set

mode. (Refer

Em

d. Remove e. Remove

fasten

that

head arm, and then remove ass'y, (Refer

HL

arm, and set

main cover.

4·7

LOAD

the head load ass'y

an excessive force is

(Refer

Damper Replacement

ASS'V REPLACEMENT

both

the FC-9/FC·14 Mounted Baord

plate: (Refer

the

main cover. (Refer

the

machine

to Fig. 4·9 (a) )

the

damper. (Refer

the

two

screws (PS2.6 x 6) which

to

Fig.

4-8·2. Installation and Adjustment

a.

Manually set the machine into mode. (Refer to Fig.

Em

Pass the harness

b.

the

opening

(a)

(b)

c. Fasten

nal

to

it 6). (Refer

d. Bend one

±l~o.

e. Install

of

the

of

the

)

both

the

(Refer the

chassis. (Refer

the head load ass'y and lug termi-

chassis with

to

Fig. 4-8 (a)

tip

of

the

to

Fig. 4-8

damper

in

into

between

the

Fig. 4·7)

to

4·5)

5·11)

4-1)

into

to

not

(a) (b»

two

(b)

(c»

(Refer

damper

to

4·5)

the

Disk·In

4·7)

the

chassis so

applied

to

the

head load

the

Disk·In

to

Fig. 4·8

screws (PS2.6

)

by

to

4-7)

to

4·8

4·9 (a) )

head load ass'y through

the

lug terminal

place.

cas-

the

90

f.

Install

both

the

FC-9/FC-14 Mounted Board

in

and shield plate

g.

to

0

Perform (Refer

h. Perform

to

5-9)

i. Install

j.

Make

Fig. 4-8 Head

to

the

place. (Refer

the

head clearance adjustment.

5-10)

the

HL

arm height adjustment. (Refer

main cover

head clean.

Load

Ass'y Replacement

in

place.

(Refer

to

4-1)

5·11)

to

4·5)

-32-