Osborne Occ-1 Manual

Prepared

by:

Xerox

Corporation

Xerox

Service

Business

OSBORNE COMPUTER CORPORATION

OCC-I/EXECUTIVE COMPUTER

DIAGNOSTIC PROCEDURES

SBXNEDOIO

Service

Education &

Customer

Support

1341

W.

Mockingbird

Lane

Dallas, Texas 75247

JANUARY 1984

TABLE

OF

CONTENTS

OCC

DIAGNOSTIC

DOCUMENT

PURPOSE

DIAGNOSTIC MATERIALS

REQUIRED

OCC-l

DIAGNOSTIC DISKETTE

INFORMATION

INTRODUCTION

LOOPBACK

PLUGS

DISK DRIVE TESTS

MEMORY TESTS

SERIAL

PORT

TEST

PARALLEL

PORT

TEST

ROM

TEST

DRIVE

EXERCISER

SEEK

TRACK

DRIVE

TIMER

HOME HEAD

ALTERNATE

TRACK

DISK DRIVE

STEP

RATE

TEST

PATTERN

ERROR

SUMMARIES

CLEAR

ERROR

TOTALS

CP/M

FILES

COpy

VIDEO

TEST

PATTERN

SPEED

TEST

SYSGEN

SETUP

PIP

KEYBOARD

TEST

OCC-EXECUTIVE

DIAGNOSTIC DISKETTE

INFORMATION

INTRODUCTION

CP/M

FILES LISTING

COMPLEXITY

SELECTIONS

TEST

CONFIGURATIONS

LOOPBACK

PLUGS

COMMAND MENU

COMMANDS

DISK DRIVE

ERROR

REPORTS

LOGIC

BOARD

TESTS

MEMORY

BOARD

TESTS

DISK DRIVE

TESTS

TEST

PATTERNS

KEYBOARD

TEST

MBASIC

SHOW

FILE

PIP

SINE

FILE

COPYSYS

COpy

FORMAT

SDDBIT (DRIVE

ERROR

RATE

TEST)

SPEED

TEST

CONTEST

FILE

SETUP

PAGE

3

4

6

7

8

10

11

12

13

14

15

18

19

20

21

22

24

27

31

32

34

35

36

37

38

39

40

41

·

OCC

DIAGNOSTICS

PURPOSE

The

purpose

of

this

manual is

to

state

the

diagnostic

procedures

available

for

use in

troubleshooting

the

Osborne 1 and

Executive

Computers.

The

procedures

included

will

explain

the

use

of

the

OCC-l

Diagnostic

Diskette

and

the

Field

Service

Department

Executive

Diagnostic

diskette.

Through

the

use

of

these

diagnostics

the

Logic Board, Memory Board

(Executive

only), Floppy

Diskette

Drives,

Screen,

and Keyboard

can

be

verified

or

aligned.

This manual will also explain

the

procedures

required

to

load

and

use

the

available

CP/M

files

to

assist

you in

troubleshooting

and

verifying

correct

operation

of

the

Osborne

Computers.

This

manual

is divided

into

two

sections.

The

first,

OCC

EXECUTIVE DIAGNOSTIC

PROCEDURES, explains

step-by-step

how

to

use

the

diagnostics

and

CP/M

files

on

the

diskette.

The

second

section

is a

description

of

the

step-by-step

procedures

to

use

the

OCC

1

Diagnostic

Diskette.

MATERIALS REQUIRED

The Osborne

Field

Service

Department

Executive

Diagnostic

Diskette

and

the

OCC-

1

Diagnostic

Diskette

are

the

primary

sources

of

diagnostic

and

utility

programs

used

to

troubleshoot

the

Osborne

Computers.

To run

all

available

diagnostic

tests

the

following

items

will be

required:

Osborne

OCC-I

Diagnostic

Diskette

Xerox

part

no. TO BE SUPPLIED

Osborne

Field

Service

Department

Xerox

part

no. TO BE SUPPLIED

Executive

Diagnostic

Diskette

2 5t"

single-sided

floppy

diskettes

1 RS-232C

"loopback

plug"

(Executive)

1 IEEE 488

"loopback

plug"

(Executive)

1 RS232

"loopback

plug"

(OCC-I)

1 IEEE-488 "loop

back

plug"

(OCC-I)

3

Xerox

part

no. TO BE SUPPLIED

Xerox

part

no. TO BE SUPPLIED

Xerox

part

no. TO BE SUPPLIED

Xerox

part

no. TO BE SUPPLIED

·

OCC-l

DIAGNOSTIC DISKETTE

INTRODUCTION

The

Osborne

OCC-l

Field

Service

System

Confidence

Test

Diagnostic

Diskette

is a menu

driven

diagnostic

software

package

for

Service

Center

Technician

use

in

troubleshooting

and

verifying

correct

operation

of

the

Osborne

OCC-l

Computer.

The

Diagnostic

Diskette

contains

tests

which

are

capable

of

exercising

the

following

components:

Logic

PWB

Floppy

Diskette

Drives

Keyboard

The

OCC-l

Field

Service

Syste

m

Confidence

Test

Diagnostic

Diskette

also

has

the

capability

of

displaying

various

CRT

test

patterns

to

assist

you in

aligning

the

video

presentation.

The

following

files

are

also

located

on

the

Field

Service

System

Confidence

Test

Diagnostic

Diskette:

COpy

(Copy

or

format

diskettes)

VIDEO

(Test

pattern

display)

SPEED

(Diskette

drive

timer)

SYSGEN

(Operating

System

Generation

Program)

SETUP

(Configuration

program

PIP

(Peripheral

Interchange

Program)

KB

(KeyBoard

Test)

The

OCC-l

Diagnostic

Diskette

is

not

designed

as

a

"chip

level"

troubleshooting

tool

(although

some

tests

will

define

to

the

chip

level).

To

expedite

repair

the

diagnostic

will

display

a

failure,

when

it

occurs,

to

one

of

the

field

replaceable

units

(Logic PWB, Floppy

Disk

Drive,

or

Keyboard).

4

OCC-l

DIAGNOSTIC DISKETTE

PROCEDURES

Press

the

Power

On/Off

button

to

apply

power

to

the

OCC-l

Computer.

When

the

screen

displays

"Insert

disk

in

Drive

A

and

press

RETURN._"

insert

the

OCC-l

Field

Service

System

Confidence

Test

Diagnostic

Diskette

into

the

left

drive

(Drive

A)

and

press

the

RETURN key.

When

the

diskette

has

loaded

the

following will

be

displayed

on

the

screen:

FIELD SERVICE SYSTEM

CONFIDENCE

TEST 2.04

OCCl

o =

cOnfidence

test

MEMORY

A =

refresh

8 =

galpat

C =

v-bar

D =

diagonal

E =

run

all

memory

test

F =

alter

refresh

delay

DRIVE

G =

drive

A

H =

drive

8

I =

drives

A

&:

8

PORT

J =

serial

K =

parallel

INPUT

LETTER

COMMAND:

MISCELLANEOUS

L =

rom

test

M =

display

sector

N =

P = DRIVE

EXER

Q =

step

rate

R =

S =

screen

pattern

ERROR

SUMMARIES

T =

print

disk

errors,

serial

U =

print

disk

errors,

parallel

V =

display

disk

errors

hard

W =

display

disk

errors

soft

X =

display

memory

Y =

clear

error

totals

Z =

exit

These

are

the

available

Confidence

tests

which

can

be

used

for

assistance

is

troubleshooting

the

OCC-l

Computer.

The

tests

are

started

by

inputting

the

letter

which is

listed

before

the

name

of

the

test

or

function.

The

entries

are

divided

into

seven

specific

sections.

Now

that

the

program

is

loaded

into

memory,

remove

the

OCC-l

Field

Servive

System

Confidence

Test

Diagnostic

Diskette

from

the

left

drive

and

insert

blank

diskettes

(without

the

write-protect

tapes)

into

drive

A

and

drive

B.

5

·

OCC-l

DIAGNOSTIC DISKETTE

The

Serial

and

Parallel

Port

test

will

require

the

use

of

loopback plugs. The plugs

appear

similar

to

the

following

diagrams:

1°

SERIAL

LOOPBACK PLUG

IEEE

TEST

CONN

XXXXXXX

TOP

SIDE

o

PARALLEL

LOOPBACK PLUG

The

Serial

Loopback Plug should

be

inserted

into

the

plug on

the

front

bezel

labeled

"SERIAL RS232". The

Parallel

Loopback

Plug

is

inserted

into

the

plug on

the

front

bezel

marked "IEEE-488"

with

the

side

marked

"TOP SIDE"

facing

up. Without

these

plugs

installed

the

port

tests

will fail. The plugs

turn

the

outgoing

signals

back

into

the

logic board

where

they

can

be

checked.

The

first

section

of

the

test

options is "0"

the

Confidence

Test.

This

test

is a

combination

of

tests

A,

B,

C, D, G, H,

J,

and

K.

It

is a

rather

lengthy

test

(approximately

40

minutes) which is run in cycles. Not

all

tests

are

performed

in

each

cycle.

The

inital

part

of

the

test

is menu-driven

although

the

test

runs

automatically.

To

start

test

"0"

press

the

0 key.

The

screen

will display

the

following:

SELECT

DRIVE TEST DENSITIES

S = Single

Density

Test

Only

D = Double

Density

Test

Only

B =

Both

Single

and

Double

Density

test

INPUT

LETTER

COMMAND:

If you

want

to

test

the

disk

drives

in single

density

only you would

type

S;

double

density

only you would

type

D;

to

test

single and double

density

type

B

(select

D

or

B only

if

the

system

has

the

Double Density option

installed

or

errors

will occur).

When you

enter

your option

the

screen

will respond

with

selections

for

the

types

of

tests

you

can

run.

6

OCC-l

DIAGNOSTIC DISKETTE

Entering

the

letter

P

(pre-test)

will

cause

the

tests

to

be

performed

twice.

If you

enter

the

letter

F

(final-test)

the

test

will be

performed

five

times.

If

you

type

the

letter

L (loop-test)

the

tests

will run

twenty-five

times.

When you input

the

letter

of

the

test

type

you

want

to

run,

the

test

will

start

and a new

screen

will be

displayed.

The

top

line

of

the

screen

will

indicate

whether

you

are

running a single

density,

double density,

or

both

test.

"TEST CYCLE" is

the

number

of

times

the

test

has

completed

running.

The

indicates

"HARD

ERROR

TOTALS ARE:" Below

the

word "ARE"

the

number

of

hard

(unrecoverable)

errors

will be

listed

corresponding

to

each

of

the

test

names

(MEMORY, PARALLEL PORT, SERIAL PORT, DRIVE A, DRIVE

B).

If

an

error

occurs

during

the

diskette

drive

test

the

words "REJECT"

or

"POSSmLE

REJECT" will be displayed on

the

screen.

This depends upon

the

number

of

errors

which

occurred

during

the

test.

This informs you

that

the

disk

drive

or

diskette

itself

is not

performing

as

expected.

The

bottom

line

of

the

screen

displays

the

currently

running

test

on

the

left

side,

and

the

memory location, in

hexadecimal

if

a memory

test

is being run, on

the

right

side

of

the

screen.

If a

diskette

test

is running,

the

current

track

which is

under

test

will

be

displayed on

the

right

side

of

the

screen.

There

are

four

SUb-tests which

are

run during

the

"0"

test

under

the

heading

of

memory. They

are

"REFRESH, GALPAT (Galloping

Pattern),

V-BAR, and MOVING

DIAGONAL". Each

of

these

test

various functions

of

the

memory

locations

on

the

Logic Board. All

of

these

tests

are

not run in

every

cycle.

The Moving Diagonal

test

is

run

in

the

second

cycle

of

the

test

(this

test

may

take

approximately

20

minutes

to

run). These

tests

can

also

be

run independently from

the

"main

menu" by

selecting

tests

A,

B,

C,

or

D.

When

the

Memory

Tests

complete

the

"SERIAL PORT"

test

is

performed.

This

tests

the

operation

of

the

"SERIAL RS232"

Port

and

the

control

circuits

on

the

Logic

Board. The loopback plug must be

installed

to

loop

the

test

signals

back

into

the

Logic Board

for

verification.

If

the

plug is

not

installed

the

test

will

fail.

7

OCC-l

DIAGNOSTIC DISKE'ITE

The

to

be run is

the

"PARALLEL PORT"

test.

This

tests

verifies

the

operation

of

the

IEEE-488

Parallel

Port

and

the

control

circuits

on

the

Logic Board.

The loopback plug must be

installed

to

loop

the

test

signals

back

into

the

Logic

Board

for

verification.

If

the

plug is not installed

the

test

will fail.

The

diskette

drives

are

tested

next.

Both

drives

are

exercised

with

the

same

testing

procedures.

The

first

test

is "FORMAT / READ".

In

this

test

all

tracks

of

the

diskette

in

drive

A

are

formatted

and

then

all

of

tracks

of

the

diskette

in drive B

are

formatted.

If

these

tests

passed with

no

errors,

"ONE CYCLE PASSED" will be displayed on

the

screen

and

the

will

start.

If

errors

occured

they

will also be displayed.

"REJECT" may be displayed on

the

screen

if

too

many

diskette

errors

are

encountered.

Every

time

a hard

error

occurs

the

number

to

the

right

of

the

drive

name will

update

to

show you

the

count.

The columns

to

the

right

of

the

screen

(NUMB,

cyc#)

indicate

in

what

test

and

cycle

number

the

failures

occurred.

The

screen

will

update

whenever an

error

is found.

The

starts

again with

the

memory REFRESH

test.

This is followed by

the

GALPAT and V-BAR memory

test.

The SERIAL

PORT

and PARALLEL

PORT

tests

are

again run. The

diskette

in

drive

A

is

then

formatted

again. The following

diskette

drive

tests

are

then

run in

the

sequence

listed:

HEAD MOVEMENT

ALTERNATE SEEK

SEEK/WRITE/READ/VERIFY

SEEK/READ/VERIFY

The

diskette

is drive B is

then

formatted

and

the

same

four

tests

are

run.

The memory

sequence

of

tests

starts

over

again

but

this

time

the

-MOVING

DIAGONAL

test

is also

run

(this

test

may

take

approximately

20

minutes

to

complete).

When

the

memory

tests

have run

the

diskette

drive

tests

again

start.

The

diskette

in drive A is

once

again

formatted.

The following drive

tests

are

then

run:

8

OCC-l

DIAGNOSTIC DISKETTE

HEAD MOVEMENT TEST

ALTERNATE SEEK TEST

RANDOM SEEK TEST

SEEK/WRITE/READ/VERIPY

SEEK/READ!VERIPY

ACCORDION/SEEK/WRITE/READ/VERIPY

SEEK/RBAD!VERIPY

RANDOM SEBK/WRITB/READ/VERIPY

SEBK/RBAD/VERIPY

ACCORDION/SEEK/READIVERIPY

RANDOM SEEK/READ/VERIPY

When

these

tests

completely

run

the

diskette

in

drive

B is

formatted

and

the

eleven

tests

run

for

drive A

are

repeated

for

drive

B.

The HEAD

MOVEMENT

TEST rapidly moves

the

head

to

various

tracks

of

the

diskette

is succession.

ALTERNATE SEEK

tests

move

the

head

from

one

track

to

another

and

back

continuously.

The

SEEK/WRITE/READ/VERIFY

test

first

seeks

to

a

specific

track.

Data

is

written

on

that

track,

read,

and

verified.

ACCORDION

tests

start

at

track

0 and

then

test

to

track

39;

track

1

to

38;

track

2

to

37 and so on. When

the

middle

of

the

diskette

is

reached

the

process

starts

in

the

reverse

order

working

out

towards

tracks

0 and 39.

RANDOM

tests

occur

on various

tracks

throughout

the

diskette

surface.

Each

of

these

tests

is designed

to

exercise

the

control

circuits

and mechanisms

of

the

diskette

drive

to

its

fullest.

The

Confidence

test

can

be

stopped

at

any

time

by

pressing

and holding

the

CTRL

key and

then

pressing

the

C key. This

action

will

return

you

to

the

main menu.

The main menu

contains

other

tests

and options

for

your

use. Under

the

heading

of

MEMORY is

selection

E.

By

inputting

this

selection

you

are

allowed

to

run all

of

the

memory

tests

at

one

time.

9

I OCC-1 DIAGNOSTIC DISKETTE

Selection

F

(alter

refresh

delay)

can

be used

to

change

the

way in which

the

REFRESEH MEMORY

test

is run. When F is

entered

the

screen

will display

eight

different

delay

times

which you

can

set

to

change

the

rate

at

which

the

REFRESH

TEST will run.

By

pressing

the

letter

of

the

new

refresh

ti

me you

want

to

use

the

rate

is

changed.

When

the

REFERESH TEST is run

the

test

will

pause

for

the

length

of

time

you

specified

before

restarting

each

section

of

the

test.

The

MISCELLANEOUS

section

of

the

screen

contains

tests

and

other

options which

can

be

used.

Selection

L is

the

ROM TEST. When L is input

the

screen

will display

the

following:

(L)

rom

ere

test

o ROM REV: X.X

CRC:

XXXX

CRC

is

an

abbreviation

for

Cyclic

Redundancy

Check.

This is a

mathematical

formula

which is used

to

verify

the

data

within

the

ROM. The

second

line

lists

the

revision

level

of

the

ROM

and a

CRC

number (the

CRC

number

is

of

no value

to

us).

Selection

M,

DISPLAY SECTOR, is only used

for

software

troubleshooting

and

analysis purposes.

P is

the

DRIVE EXERCISER. When

this

letter

is

entered

the

following will

be

displayed on

the

screen:

HOME

HEAD

o

SEEK ALT DRIVE

TRACK TRACK TIMER

10

20

30

The

numbers

below

the

blocks

indicate

tracks.

DRIVE

SELECT

The DRIVE SELECT block is used

to

select

the

drive

you wish

to

use

(A

or

B).

The

RETURN key does

not

have

to

be

pressed.

10

OCC-l

DIAGNOSTIC DISKETTE

Use

the

arrow

key

to

highlight

the

SEEK

TRACK

block.

When

the

RETURN

key

is

pressed

the

screen

will

respond

with

"Enter

new

track

number

(0-39)".

Enter

the

number

and

when

the

RETURN

key

is

pressed

the

drive

will

seek

to

the

location

you

input.

The

indicator

on

the

line

of

the

screen

will

be

placed

at

the

selected

track

also.

The

DRIVE TIMER is

used

to

monitor

the

speed

of

the

drive

to

verify

correct

speed

and

adjust

if

necessary.

To

run

the

DRIVE TIMER

correctly

a

seek

to

track

16

should

be

performed

first.

With

the

head

at

track

16

use

the

arrow

key

to

highlight

the

DRIVE TIMER block. When

the

RETURN

key

is

pressed

the

speed

in

milliseconds

is

displayed

in a box

on

the

center

of

the

screen.

The

correct

speed

for

the

ALPS

drive

in

the

Executive

Computer

is 200±1 milliseconds (VRI on

the

spindle-motor

control

board

should

be

adjusted

to

obtain

this

setting).

The

HOME HEAD

selection

is

used

to

move

the

head

back

to

the

home

position.

Use

the

arrow

key

to

highlight

the

HOME HEAD

block.

When

the

RETURN

key

is

pressed

the

head

will move

to

home

from

its

location.

The

indicator

on

the

line

of

the

screen

will also

indicate

the

home

position.

The

ALT

TRACK

selection

is

used

to

cycle

the

head

from

one

track

to

another.

Use

the

arrow

keys

to

select

the

ALT

TRACK

block

and

press

the

RETURN

key.

The

screen

will

respond

with

"Enter

new

track

number

(0-39):" When you

enter

the

new

number

and

press

the

RETURN

key

the

head

will

alternate

from

the

current

track

to

the

track

you

input.

To

change

the

current

track

use

the

SEEK

TRACK

block

and

then

return

to

the

ALT HEAD

block.

Press

and

hold

the

CTRL

key

and

press

the

C

key

to

exit

this

test

to

return

to

the

main

menu.

Q is

used

to

change

the

STEP

RATE

for

the

diskette

drive

tests.

When

this

key

is

entered

a

list

of

times

is

displayed.

Notice

the

times

are

in

milliseconds.

When

the

STEP RATE

(rate

at

which

the

head

will

change

track

positions) is

changed

you

probably

won't

see

much

difference

because

of

the

short

time

frames

involved.

When you

enter

selection

S a

test

pattern

will

be

displayed

on

the

CRT.

This

pattern

can

be

used

for

alignment.

Refer

to

the

Osborne

Field

Service

Manual

for

alignment

of

the

5"

CRT.

11

I

OCC-1

DIAGNOSTIC DISKETTE

By

pressing

the

RETURN

key

the

main menu will

again

be

displayed.

The

ERROR

SUMMARIES

section

of

the

screen

is used

to

print

or

display

the

errors

that

we

encountered

while

running

the

tests.

Selections

T and U

can

be

used

to

print

the

summary

if

a

printer

is

connected

to

the

Serial

or

Parallel

ports.

When V

is

pressed

the

diskette

HARD

(unrecoverable)

ERRORS

will

be

displayed.

The

screen

lists

the

HARD

ERROR

TOTALS,

the

NUMB

(number

of

times

in

each

test

an

error

occurred),

and

the

eye'

(the

cycle

number

in which

the

error

occurred).

Press

the

RETURN key

to

display

the

main menu.

The

W

entry

will

display

the

soft

(recoverable)

errors

encountered

while

testing.

The

screen

displays

the

SOFT

ERROR

TOTALS,

the

NUMB

(number

of

times

in

each

test

an

error

occurred),

and

the

eyel

(the

cycle

number

in which

the

error

occurred).

When you

press

and

hold

the

CTRL

key

and

then

press

the

left

arrow

key,

the

screen

will

scroll

to

the

left

and

display

the

error

for

diskette

drive

A.

Press

the

RETURN key

and

you will

display

the

main menu.

The

X

selection

displays

information

on

the

memory

test.

When X is

pressed

the

screen

lists

the

four

MEMORY TEST,

the

number

of

CYCLES

run, and

the

number

o~

ERRORS which

occurred.

The

data

towards

the

bottom

of

the

screen

lists

the

locations

of

the

RAM chips on

the

Logic Board.

If

a

location

had

an

error

a 1 would

be

placed

at

the

coordinates.

The

RAM

chips

are

located

at

posations

20

-27 in

Rows A,

B,

C,

and

D.

Press

the

RETURN

key

to

again

display

the

main menu.

The

Y

entry

is used

to

CLEAR

the

ERROR

TOTALS.

This

will

erase

all

on

error

logging.

The

accumulated

entries

will

start

from

o.

The

last

selection

on

the

screen

is Z.

It

is used

to

exit

the

Confidence

tests

and

display

the

operating

system

files.

Remove

the

blank

diskette

from

drive

A

and

insert

the

OCC-l

Field

Service

System

Confidence

Test

Diagnostic

Diskette

into

the

left

drive

(Drive A).

Press

the

Z key.

The

diskette

will

be

accessed

and

load

the

operating

system

softeware

into

memory.

When

it

is

loaded

the

CP/M

prompt

(A~)

will

be

displayed

on

the

screen.

Type

DIR

and

press

the

return

key

to

display

the

DIRectory

of

files

available

to

use.

The

following will

be

displayed

on

the

screen:

12

OCC-1

DIAGNOSTIC DISKETTE

A:

COPY

COM:

PIP COM

A: VIDEO

COM:

BRUN COM

A: SPEED

COM:

MENU COM

A: SYSGEN

COM:

STDKB DAT

A: SETUP

COM:

KB

COM

A: PRINT

COM:

AUTOST COM

Some

of

these

files

can

be

used

for

testing

while

others

are

"utilitites"

for

specific

functions.

The

COPY

file

can

be

used

to

copy

entire

diskettes

or

to

format

diskettes.

To use

this

program

type,

COpy

and

press

the

RETURN key.

The

file

will

load

and

the

screen

will display

the

format

and copy options. By

entering

C

(copy)

or

F

(format)

you

can

select

either

program.

Use

caution

and

read

the

directions

carefully

when copying

or

formatting

diskettes.

Always

write-protect

the

source

diskette

to

prevent

accidental

erasing.

When

the

format

option is run

an

*

will

be

displayed on

the

screen

as

each

track

is

formatted.

If

an

error

occurs

on a

track,

E will

be

displayed on

the

track

position

where

the

error

occurred

and

FORMAT ERROR will be displayed on

the

screen.

In

the

COpy

mode

each

track

number

is displayed

as

it

is

read

from

the

source

diskette

and copied

onto

the

destination.

If

an

error

occurs

COPY

ERROR will be displayed on

the

screen.

Press

RETURN

to

exit

the

program.

The

prompt

will be displayed. Type DIR

to

again

display

the

DIRectory.

The

name

is VIDEO. When

this

is

typed

and

the

RETURN key is

pressed

a "burn-in"

test

pattern

is displayed on

the

screen.

This

test

pattern

can

be used

to

adjust

centering

or

focus

of

the

CRT.

Refer

to

the

Osborne

Field

Service

Manual

for

the

adjustments

to

the

5"

CRT.

Press

and hold

the

CTRL key and press

the

C

key

to

exit

this

test

and

reload

the

operating

system

to

display

the

CP/M

prompt

(A».

Type DIR

to

display

the

DIRectory.

The

name is SPEED. This

file

allows you

to

display

the

diskette

drive

speed

(A

or

B)

on

the

CRT. This should only

be

used

for

a

check

of

the

speed

and

not

adjustment.

The DISK EXERCISER

test

within

the

Confidence

tests

should

be

used

for

the

adjustment

as

this

is

the

only

test

that

allows you

to

seek

to

track

16

before

the

speed is

verified

or

adjusted.

The

speed

should always be

set

when

the

head

is

at

track

16.

Press

and hold

the

CTRL key and

press

the

C key

to

exit

this

test

and

reload

the

operating

system

to

display

the

CP/M

prompt

(A~.

Type DIR

to

display

the

DIRectory.

13

I

OCC-1

DIAGNOSTIC DISKETTE

The

SYSGEN

file

is

the

name

of

the

Operating

System

Generation

Program.

It

is

used

to

copy

the

operating

system

(only)

from

one

diskette

to

another.

Prevent

accidental

damage

to

your

source

diskette

by

applying

a

write-protect

tape

strip

before

you

start

this

program.

The

screen

will

ask

you

to

input

which

drive

contains

the

source

and

the

destination

diskettes.

When

the

procedure

is

completed

"System

copied

successfully"

will

be

displayed

on

the

screen.

Press

the

RETURN

key

to

again

display

the

system

prompt.

The

SETUP

program

is

used

to

change

the

system

configuration

on

a

diskette

with

the

operating

system

contained.

When SETUP is

entered

and

the

RETURN

key

is

pressed

the

screen

will

respond

with

"Which

Diskette

do

you

want

to

configure".

The

diskette

drive

that

contains

the

operating

system

is

the

selection

you should

enter.

When you

enter

the

drive

letter

the

configuration

options

will

be

displayed

on

the

screen.

This allows you

to

change

the

following:

Type

of

printer

connected.

Baud

rate

required.

The

size

of

the

screen

in

characters.

Enabling

of

automatic

horizontal

screen

scrolling.

Indicate

a

specific

input

for

use

with

the

function

keys

(CTRL

+ 0-9).

The

use

of

the

arrow

keys.

Select

the

changes

by

inputting

the

letter

of

the

item

you wish

to

change

and

the

options

will

be

displayed.

When you

have

finsihed

with

the

changes

press

the

X

key

to

exit.

The

screen

will

request

you

to

indicate

which

drive

you

want

this

information

copied

to.

When you

enter

the

letter

(A, B,

or

X)

the

configuration

will

be

copied

and

the

system

prompt

will

be

displayed.

Enter

DIR

to

display

the

DIRectory.

The

PRINT

file

is a

very

short

Parallel

Port

Test

which is

not

implemented

in

this

version

of

the

diagnostics.

Use

the

Parallel

Port

test

within

the

Confidence

test

to

verify

correct

operation

of

the

IEEE-488

circuits.

14

OCC-l

DIAGNOSTIC DISKETTE

The

PIP

file

(Peripheral

Interchange

Program) is used

to

copy a

file

to

another

diskette

or

other

device

(printer,

modem). Type PIP and

press

the

RETURN key.

The

following will be displayed

to

let

you know

the

PIP

program

is

available

for

use:

*

To copy a

file

from

diskette

drive

A

to

B you would

enter

the

following:

B:file

name.file

name

extension=A:file

name.file

name

extension

When

the

RETURN key is

pressed

the

file would be

copied

from

drive

A

to

drive

B.

Use

caution

when using

the

PIP

program.

Files

can

be

written

over

if

you

have

not

input

the

correct

sequence.

Write-protect

the

source

diskette

to

prevent

accidental

damage.

To

exit

the

PIP

program

and

return

to

the

prompt,

press

the

RETURN key.

The

prompt

(A» will

be

displayed on

the

screen.

The

BRUN

file

is a

CP/M

program

which is

not

used

for

troubleshooting

or

utility

purposes.

When MENU is

typed

and

the

RETURN key is

pressed,

the

Confidence

test

main

menu will

again

be displayed. You

can

use

this

file

to

enter

the

Confidence

tests

from

the

system

prompt.

The

STDKB file

contains

the

information

used

to

display

the

instructions

for

the

keyboard

test

(KB). STD

KB

cannot

be

accessed

for

our

use.

To use

the

keyboard

test,

type

KB

and

press

the

RETURN key.

The

screen

will

sequentially

display

all

of

the

characters

(upper and lower) on

the

keyboard. You

are

asked

to

press

the

key displayed.

If

the

wrong key is

pressed

an

error

will

be

displayed. As you

press

each

key

the

screen

will ask you

to

press

the

all

are

checked.

When

this

is

complete

the

screen

will display KEYBOARD GOOD.

Press

the

ESC key

to

again

display

the

system

prompt.

The

last

file

is AUTOST. This

file

is

not

for

troubleshooting

purposes and is used

to

automatically

load

the

Confidence

test

when you

power

the

system

on,

insert

the

Diagnostic

Diskette

and

press

the

return

key.

15

·

OCC-l

DIAGNOSTIC DISKETTE

The

procedures

listed

are

to

assist

you in

troubleshooting

the

Osborne

OCC-l

Computer.

You should

refer

to

the

Osborne Field

Service

Manual

for

procedures

required

for

troubleshooting,

removal/replacement,

adjustments

or

Theory

of

Operation.

Contact

the

XSB

Technical

Support

Center

in Dallas

if

you

have

any questions.

16

Osborne OCC-1 Manual

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