Sage II Service Manual

SAGE

II

SAGE

35

SERVICE

ocr.

COMPUTER

EDISON

N.

RENO,

NV

HANUAL

1982

TECHNOLOGY

SUITE

II4

89502

SAGE

II SERVICE

MANUAL

VERSION

I.O

Copyrtght

rlghts

A11 content

in

Technology

(c)

L982,

Sage Computer

reserved. Reproduction

any manner wtthouc

prohlbited.

is

No

patent

Technology,

or

express

to the use of the information contained has

been

taken ln

preparatlon

the

this book,

of assumes no responsibiltty for errors llabtllty assumed contained

UCSD PASCAL Universlty

herei-n.

and

of California.

for

UCSD

darnages resulting

p-Systern

are all

Reno,

use of

editorial

permisslon from

liability

herein.

is

I.lhlle every

Sage

or

omissions.

from the use of the

N

89502

plctorial

or

Sage

asstrmed

Computer

with respect

precautlon

Computer Technology

Nelther

ls any

lnformation

trademarks of the regents of the

sAcE

SERVTCE

rI

TABLE OF CONTENTS

MANUAL

I

.0]

I

Table Of

II III

III.OI I II.

02

I II.

03

I II.

04

IV

V VI

VI.Ol VII

vrr.0

VII.O2 VII.

03

vII.04

vrl.05

Contents

DESCRIPTION

DIAGNOSTIC AIDS AVAILABLE

CARE AND

CIRCUIT

CHIP HANDLING. . . . . .

DISK

I.{ICROPOLIS

SOFTT{ARE

SYSTE},T

DRIVE HANDLING.

LEVEL TROUBLE

CIIECKING

REPLACING THE

poIIER-Up

I

INITIALIZATIONT RAlt{ I"IEMORY DISK B0OTSTRAP.

SPECIAL

OF DIAGNOSTIC AIDS

EANDLING

BOARD

DISK DRM

INSTALLATION

THE

PO.rilER SUPPLY . .

PROCEDURES . O'' I O' t''''' 3

HANDLING. . O

POI^IER SUPPLY.

ROIITINE

TEST . .

MONITOR

. .,

.

.. . . . .

. . . . .

COMI'{ANDS.

I'IAINTENANCE TESTS

. .

.

. . . . o r . o . . . . . . .3

. .

. o o o .

HANDLING.

O' O

SHOOTING

. . .

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r . o . . . . . . I r .

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VIII VIII. O 1 VIII. VIII. VIII. VIII.

O2 03 04 O5

IX

x

XI

xr.01 xr.02 xr.03 xr.04 xI.05

CPU BOARD

TROUBLESEOOTING CHECKING THE SYSTEM CLOCK. CHECKING THE CHECKING CTIECKING TITE RAM REPLACING

TEITIPERATURE

ADDRESS

THE

REFRESH

STROBE SIGNALS.

SIGNALS.

THE COMPUTER TEST

. .

BOARD.

INTBR}IITTANCE CHECKLIST

CTCLER.

TEST TEST OPERATION. . . TEST AtrTER. . . o . o . . CYCLER RAl'f TEST. SERIAL TEST.

ERROR DISPLAY.

. . . . .

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)

sAcE

TABLE

xr.06

XI.

xr.08 xr.09 xr.

XI.II

xr.

XII XII.

sERvrcE

rr

CONTENTS

OF

07

10

12

1

O

MANUAL

PARALLEL FLOPPY DISK

swITcH

ATTACH

REAL BUILDING

CLEANERPROGR.AI.{

BUILDING

1.0]

[

TEST.

DRIVE

STRAP

TEST. TEST.

TEST.

TIME

cYcLER.

CLEANER.

TEST.

.

. .

.

..

. .

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o.....

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37 37

19

XIII

XIII.Ol XIII. O

II.

XI XI

O3

II. 04

XIII.05 XIV XV

XVI XVII

xvrr.0

XVII. O2

I.

XVII.

r.

xvl

03 04

OT

08

XVI XVII.

xvrI.05

XVII. 06

ALIGNI.TENTDIAGNOSTIC

TEST

2

PATTERN PATTERN PATTERN BUILDING

REPLACING

suBsYsTEu

CABLE

CPU

I

DESCRIPTION.

1.

2..

3.

THE

IioDIFICATIONS

WIRING

BOARD PAGE I PAGE

PAGE 3 PAGE PAGE 5 PAGE PAGE

LIST

CIRCUIT 0F OF

2

OF

4 OF

OF SCHEMATIC

OF

6 7 OF OF SIGNAL

...

..

. . .

.

ALIGN.

FLOPPY

NOTES

SCHEMATIC.

SCHEMATIC

SCI{EMATIC SCI1EMATIC

SCHEMATIC SCIIEMATIC

ABBREVIATIONS.

....

. .

" . .

o .

.

o .

.

DISK

. .

o

DESCRIPTIONS

DIAGRAMS.

DIAGRAI"IS DIAGRAMS. DIAGRAI"{S.

DIAGRAMS.

o

.

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r

. .

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o

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o

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68

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XVIII XVIII.

ERROR

O 1

XVIII.O2

xvrrr.03

XIX

HARDTARE

xrx.0l xrx.02

LOOKUP

BIOS CI{ANNEL

BOOT

D(CEPTIoN

PROM CPU BOARD

LIST

ERROR

ERRORS.

CEANGBS

CHANGES.

CHANGTS.

. . .

ON

. . .

.

. .

CODES.

. . . .

. .

SAGE

. .

. . .

. .

II

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a a a a

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ar

,

7L 7I

7?

79

t

79

rr SERVTCE

SAGE

MANUAL

TABLE

CONTENTS

OF

[1.0]

XIX. O3

04

XIX. XIX.

O5 06

XIX. XIX.

O7 O8

XIX.

CHANGES CHANGES CHANGES DELAY LINE It'IECHANICAL GENERAL

FROM FROM C80001 FROM

MODS. . .

CHANGES.

MECHANICAL

CB0000

CB0002

NOTES.

TO c80001. .

. . . r . . . . . . 79

T0 c80002. . r TO CB0002B .

. . . .

. . . . o .

. .

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. . . .

. . .

. . . . . 82

. . . . . . . o

. .

80

83

. . . . . . . . . 84

' ' ' '

84

SAGE

DESCRIPTION

rr

SERVTCE

OF DIAGNOSTIC

MANUAL

[1.0]

AIDS

DESCRIPTION

The

Service user/dealer are

The

POIIER-UP ts always system good

The components for

by any

types

The

Sfunple,

a

The heads

checkout.

dlgttal

CYCLER test

identlfying

user

problems

of

ALIGNITENT

step-by-step

speclally

CTEANER

of a

bulldup.

OF

DIAGNOSTIC AIDS :

Kit contalns

and are

(

executed

explalned in

BOOT)

OR

on

Troubleshooting

hardware

are repeatedly

the

but hardware

test is

formatted

program

floppy

experlence.

is a

true

and

repair

lnstructions

diagnostlc

ls

drive.

several major dlagnostlc

detail tn

TEST resides ln

power-up

or reset.

at

system

executed.

perfornance

experience

used to

exerciser.

them.

determine if

and

diskette

used wirh

Often

thts

The of a

will be necessary

a

diskette

disk

the

level ls

disk Eest is

drive. This

a new

make this test

errors are

this

doctrment.

PROMS

provldes

It

Tests

a drlve

philosophy

cleaning

aids for

of

the

a

aiured

of all

due to

at

especially

test

to

ls

of Eestlng

easy

kit

the

SAGE II

Briefly,

SAGE

good

major

lsolate

to

overall

a

user wlth

can be run

misaligned.

to

run.

clean the

slnple

they

and

II

system

useful

some

using

dlrt

The

ERR0R

Also valuable

available

LOOKUP llst ls

are

trouble

shooting

a llst

descriptions

hints.

of error

of the

messages and

system

operation

what

they

with

mean,

some

SAGE

II

SERVICE

DIAGNOSTIC

AIDS

MANUAL

[1.0J

AVAILABLE

II

In wtll These

DIAGNOSTIC

order

need

diagnostics

2 2 Scratch I

I Diskette

Addttlonal

#l Oscllloscope heat cans of

AIDS

to

use

some

either

SAGE

Sgrvice Manual

Test lnterface

Test

the

II

diskettes

AVAILABLE

of the

software

aids

Usgr's

are

diskettes..(Box

A1 lgnrnent

diskettg DYSAN double

lt

506-400

density

cleaning

VERBATIM

equipurent

or

lfz

gun

needed

Phillips head

ttfreezett

:

diagnostics

and/or

avallable

described

hardware

from

SAGE:

that

in

goes

this

wlth

Sage

manualo

.....o..........o..............DC0031

....

..

i..

r......

o o........

g0/90

of

r. o....

40/

40 .,.,...........sF000g

10),...o...........DK0002

.. o..............

(

t rk)

80

sectors/256

l6

kit

....

r..................

!... o..... o

o.........SU0003

o..DC0000

r. o...o...SF0009

bytes

oDK0003

II2LL45

:

screw

such as

drlver

FREEZ-IT Chemtroni-c s

Hauppauge,

NY 11788

manual

that test.

PNll

you

lsolated

An that temperature

"lift"

anti-static

ground

The boards working

to

the

the traces

straps for

repair

on and a

on the

discharge

soldering

controlled)

and

mat

Eechnician

area

must have

ground

board.

himself

iron

lron

damage the

before

with

be no

with

an anti-static

strap

The

technlcian

worklng

a

snal1 tip.

more

a

srnall tip.

board badly.

for

on the unlt.

the

must

It

than

mat

Eechnlcian

always

25 watts

large

A

to

place

touch

is

important

iron

as he is

the

(or

will

CPU

mat

rr SERVTCE

SAGE

AND HANDLING PROCEDURES

CAPS

I"IANUAL

[1.0]

III

Some Statlc circults. damage procedures

III.OI

Clrcuit

Users

Circuit placed

Circuit

III.O2

Chips to the

CARE AND

components

especially

and should be

CIRCUIT

boards shall only be

shall

boards shall onlv be

between

boards

CHIP HANDLING:

sha1l

nat.

HANDLING PB.OCEDURES

lnternal to

ls known

Industry

considers

SAGE

ALWAYS

boards.

shall only

ONLY be

quidelines have been

followed with

most

BOARD HANDTING

grounded

be

handled on anti-static mats

the SAGE

to cause

no devlatlon.

irnportant.

:

handle<l on

Lo the mat.

stacked

stacked 8

:

are sensltive

damage

established

or over

if a

high.

layer

improper handlittg.

Eo

to both CMOS

to reduce

secEion

This

antl-statlc mats.

conductive

of

with the user

gives

and

LSI

static

the

foam is

grounded

III.O3

Dlsk drives

Disk drives

Disk drives p1

ace

Disk cardboard

Disk drives Before touching any disk

the anti-stati-c

trII.04

The MICROPOLIS

DISK DRIVE

shall be

shal1 be very

shall always be stored on

shall always

.

drive

2.

doors shal1

shlpping

I,TICROPOLIS

The door may

1. The

sha1l

disk drlves

disk

IIANDLING

grasped

never ever be

diskette

only be

first.

mat

DISK DRIVE HANDTING

be closed with

drlves are

:

only

gently

stored

be

in

drive

are handled

shlpped

from

handled at all tJ-mes,

place.

handled and

the

the front

edge.

with

cardboard

closed

handler

as above with

nothlng ln

wlthout a

without either a

placed

:

plastlc

shipping diskette

on antl-static

shall discharge

the drive.

packing

bezel.

these

dlskette.

dlfferences:

dlskette

mats,

hlmself

in

or

to

SAGE rI SERVICE SOFTWARE

INSTALLATION

I'{ANUAL

[1.0]

IV SOFTHARE INSTALLATION

The SAGE II Dlagnostic Erack and one source

flles.

40

The

track.

disketLes

:

software

Each

boot

as selected.

The master diskettes Fller and ls a

very

the diskettes

As personnel done by ".TEXTtt

f lles

safely

important safety

create

making

stored. As bad systems

work

a

except

A bridge system ( one

shlpped

precaution.

hold both source

diskettes

direcE

copy ( boot

"USERLIB.TEXT'

wlth

sn be tested by uslng SAGEUTIL example:

Boot

the

T?ren type

track diskette

80

trErt

frxrr

tt6tt

It6tt

Exit to Xecute Conf change ON-LINE.

(usualty

the command

SAGEUTIL.

igure.

when building

trPtf

't5rr rrBrr ttTtt

tf

Fl

rrJfr (cr)

rrYfr rrQtt tr

f

If

(cr)tt

f

loppy change.

the

40

trk

to set to 40

to set

CYCLER

set

set Read

to

number of

the

after

type return

updates configuratlon

until back

re-lnit to

to

is

shlpped

dlskette

has a

to a menu

from

SAGE

and code,

hold

that

area

from

track drive

80 to

change

ln

drlve

line.

'tFtr

(or

an

80/40

floppy

drive

track SAGE

non-standard

properly.

run

retries

write OFF.

until

ttReady

at command

test

menu.

on

complete

program

should

tend to

lt

only

the

also)

new

the

and

floppy

the

lt4z)

then

test

(

or

format.

parameters

=l

to write...?tt

line.

two diskettes,

which

backed

be

destroy

is

advlsed

code

and

set

runs each

diskettes,

flles.

then deleting

code

of

up using

that

floppy.

40 track drlve)

a

parameters. For

the TEST

to

MENU.

"SYSTEM.MISCINFO

dlskette.)

lef t drive).

lf

4

for

one

and

test

the

thls

servtce This

all

can

(cr)"

80

ls

and

En

80140

naklng

ltself

the changes

deslred,

If

diskette

the diskette

on

diskette can

as above only

instead of

ON-LINE.

be

made

dupllcatlng

by

changlng

80

track

an

SYSTEM.MISCIMO

SAGE rr SERVTCE

SYSTEM LRVEL

TROUBLE

MANITAL

SHOOTING

.0

I

]

SYSTEI{

V

l.

Connect

During a normal of a second. Then boot

flashes

2. If LED stays LED stays RED then the blinking

If the

3.

4- Insert the

If

5. occur, replace the

Exceptlon error

These lntermittent

from

no

LEVEL

the

of red.

LED

slgn-on

errors

TROTIBLE

power

power-on

floppy is finished. It should stay

the

dark

then the

is

dark see the section on CHECK

booE diskette

message

can also

problem

SHOOTING

cord and

the

it turns

then the

cpu

cpu cannot

and

appears

computer board.

Parity

be

whose

or

:

terminal. T\rrn the

front green for

power

board may

access the Eerminal chlp.

press

or

error Memory error

caused by

voltages

panel

supply

reset.

LED

the startup test

may

not

be

one of the

a

need adiusting.

power

is

not worklng.

THE

power

for a fractlon

RED

green

be worklng. If

POWER SUPPLY.

following

supply

switch

until

except

If LED

errors

with an

on.

the for

ls

the

If

6. diskette

or a CRC error) command

there

If

7.

replacing

there

If

8.

on a two

SAGE

Replace

9.

cable.

Next,

10. where it

spec,

power

the

sign-on

(

such as

tt

IF

l

are

the computer

ls

only

drive

thls

II

the

check

comes

check the

wirlng

appears ok but there

an error reading a system

try booting on the other drive using

.

Ewo drives and neither

board.

drive

one

system, try

is

Ehe lefr-hand

disk drlve ribbon

the

voltage

out

of the

power

harness.

supply

the computer

or

replacing

drive

cable

at

the disk

connector. If the voltage

voltage. If it is

is

an error in

will

one

board

the boot disk

(lt4z).

and try booting

drive

bootlng the

flle,

boot the system, try

clrcuit board itself

a drive

the debugger

has

been drlve.

wlth the new

correctr r€place

error,

replaced

ls

out of

0n

a

SAGE II CHECKING

SERVICH MANUAL

THE

[1.0J

POWER SUPPLY

VI CHECKING

Check

power

supply for

5,0V

+12.0v

-12.0v

the

If external supply, and

Apply resistors

Check

the ranges supply

AdjusE:

voltages

devlces

disk

a

dumrny load

from

+

5V = 1.2

-lzV

po\./er

=

*l2V

the

then the

change the

+

5V

to

THE

POTER SUPPLY

these

= = =

do not

the

4.9V to

11.5v to

-10.0v

from

drives.

to

supply

ohmn

8.0

ohm

16 ohm

supply

seem rlght,

the

voltages

voltage

Rtr16

trlmmer.)

between

:

DC volcage

5.2V

13.0v

-13.5v

to

or some

board lncluding

powet:

Ehe

ground.

to

watt

50

watt

50

watt

25

again.

should

to

5.0

5.lV

ranges:

supply

adJusted.

be

are not

the termlnal,

by eonnecting

If the

voltages are

(On

there,

the

dlsconnect any

printer,

the followlng

outslde

Compower

power

of

power

Replace the

Check +12V

If the other

the

If

perlpheral

on a

To determlne current lfunlted

board.

cpu

drop

Using the appropriate

polnts

usual.ly fault

on the sectlon

the

voltage

lndlcate

1s

power

-IzV

voltages

power

on

a trace

supply

which

Be

between the

the

area where

usually a

supply if

for

belng

voltage to careful

board.

short

bad

this is

11.5

-10.0

fal1

checks

powered

section(s) have

that is

(usually

or a

chlp.

Eo

13.0V

-13.5V

to

outside

out

ok, then a

from

each

to

observe

power

The

the

solder brldge; in a

of the three

shorted.

most sensltive)

rail

points

short is.

possible.

not

the limlts

the

board.

the short(s), apply

correct

under

with the least

replace the

short exists

power

polarity.

test,

a new

In

supply

scale

and

board

Power supply.

on the

a

the

a

of

ground

voltage across

board the

from

board, or

5.0v, 3

lnputs

voltage will

DW, measure

at

varlous

fault

field

the

amp

on the

Ehem

is

the

rr SERVTCE

SAGE

CHECKING

REPLACING

MANUAL [ 1.0]

THE

POWER

THE

POWER

SUPPLY SUPP],Y

VI. O l

l. Dlsconnect

2. Remove

3.

4.

5.

6.

REPLACING

Disconnect

Remove

Gently

moved

be

front

the

top of the

the

from

The with anti-static

on the

the chassis.

board,

Disconnect

Remove supply Tandon

THE POI{BR.

power

the

the screws

all

cables

all

the circuit

back

bend

power

the

shield

disk drives

the

back sufficiently

panel.

whether

the

supply

screws

Ttlt the

front

materials

fan

on

to the chassi-s.

SUPPLY

cord.

around

connected

board

in, or out,

power

have

fastenings.

panel

front edge of

panel.

and

cord

shield,

the underside

power

:

vent

the

to the computer

outward

thac

Slide

of

procedure s

on

Note

supply

holes

so

the LED

the

the chassis

units

of

: only shields.

the back

on

board.

that

the chassis

Lhe circult

on the

the board unEll

board

.

which

forward to remove

must

have

the

panel.

board may

front

which

older models

wtll clear

lt

only be

fan

the

attach the

clears

handled

mounted

lE

wlth

7.

8.

9.

Dlsconnect

Remove

chassls

Install

the

and remove

the

power

four

new

connector

screws

the

po\^Ier

supply

f rom

whlch

power

po\^/er

secure

supply

in the

supply.

power

the

from the chassis.

reverse order.

supply

to the

sAcE POWER-UP

Ir SERVICE

ROUTINE

MANUAL

[1.0]

VI I

The explains early processor the

verstons

features

updaEes found

The

slmplex non-interrupt devlces. reset

On executlng

Ehe lnttial and

tnittallzation address hlgh

location.

POTER-UP

power-up

how

porElons

LED

problem.

of Lhe

descrtbed

power-up

Normally,

they

are

power-up

the boot

respectlvely,

4

over F80000

memory location.

ROUTINE

routlne lt works

of the

will-

PROMS before

in

routine

switched to

or when

stack

code.

the front

polnter

:

ls

a

diagnostlc aid

and

how

to use it

boot fail,

turn

here.

program

causes the hardware

RED.

3-Jan-83

The

your

of

resides in

drlvers for

the

PRoI"lS reside in

reside

processor

the

at

and lnitlal

The

start

After

Program execution

Do

An

oscilloscope is

dlfferences

SAGE

an

self-test

at

memory locatlon

vector

the initial

wlthin for troubleshootlng.

error

do

8K byte boot

000000.

is

start vector from

messages are

not

are explalned

Users' Manual.

memory at

RESET, the

polnts

Eests, the executlon

to

swltch the

continues

itself.

necessary

have

all of

of memory,

address

0. The

to

Thts

glven

to lsolate

the

diagnostlc

ln the

ROM.

processor

the address

ROMs back

out

It

processor

F80000 but

processor

ROM locatlons

the

of

sectlon

If the

the

but

release

contalns

and

starts

reads

of

Ehe

an

of

to thelr

new

ROM

on

0

DescriptLons initlalizatlon swltches

as described

of

the lnitial-ization

test

sequence

at the

can be

end

of

tests fo1low.

contlnuosly repeated

this

sectlon.

Note that

by

the

entire

setting

the

SAGE Ir SERVICE

POWER-UP

INITIAI,IZATION

I,IANUAL

ROIJTINE

.0

I

]

I

VII.Ol First all

CHECK

0000 This is long data lines are lndeed is ln

tr^/o lines are

If

level

CHECK

Another loop sequentially

CHECK THE

thir:d

A FFCO11.."FFC081).

select

INITIALIZATION

the T/O chips

THE DATA

then

error. Check

of the signal

THE

lines

SIGNALS:

FFFF are writcen to

enough to use an

shorted together o the signal may stlll

ADDRESS

toggles all the address lines

reading

Il

O CHIP SELECTS:

loop

sequentially reads all the

change. The test repeats

will be too low.

SIGNALS:

:

are initialized

FCOFFE repeatedly for

oscilloscope to

going

for

addresses

Use

high and low.

shorts

an oscilloscope to

to another llne or a bad

000000,

to an

FFCOFE and

for

"idle"

llne that does not

A

verify

about

condition.

verlfy

between TFFE

I/O

that

ms.

100

about

that

change but the

for

ports

100 msec.

all

buffer/driver.

and

0

100 msec.

(

FFC001

all the

the

of

change

1

chip

hy

,

sAcE

POWER-UP

INITIALIZATION

rI

SERVICE I.{ANUAL

ROUTINE

[1.0]

(cont)

SWITCH SETTINGS

Next, swltches

the terninal

on the rear

ARE READ:

baud rate is determined

panel.

SIf3 SIJ2 SI{l dwn dwn dwn dwn dwn up dwn up

dwn

dwn up up

up

dwn clwn

up dwn up

up up

dwn

up reserved, wlll

sH4

dwn up

0n sEartup, the remoEe

bic,

The

and

even

floppy

is installed

parity.

drlve

(always

opElon switch is read to

double-density,

Ternlnal

1 9. 2K

baud rate

baud

9600

4800

2400

1200

600

300

Parlty control

parlty

even

parity

serlal

disabled

channel defaults

default to

enabled

determine

double-sided

reading

by

19.2K

to

baud.

data

8

which type of drive

fornnat).

GR0UP-A DIP

blts,

I

stop

SW7 FLOPPY up

dwn

The terminal

rr

Sage Iltt

thls

At on

message LED chtp.

Now

parE always dies unsuccessful. ROMS

At thts

point

is

bltnking

The

system must be

the

R0l"1s

of the slgn-on

themselves.

point,

CONFIGURATION

40

B0

track

(48

TPI)

(90

TPI) drlve

drlve

dlsplays:

:

the

terminal

is

"SAGE

II"

rapidly the

are

switched to thelr

message

before completing

Check the address llnes, switch

the display

rr

Sage II

is inltiallzed.

displayed. If

cpu cannot

reset

"Startup

should

Startup

get

to

normal

the

sign-on message,

read:

Testrf

test'r is dlsplayed. If the systen

first

The

no

message

access the terminal controller

it

out of

address

this

part

is

dlsplayed,

condltlon.

locatlon.

the switch

hardware and the boot

of the slgn-

The

has

and the

last

been

10

SAGE rr SERVTCE

POWER-UP ROUTINE

INITIALIZATION

MANUAL

(cont)

[1.0]

PROM CHECKSUM

Both

of the

"PROM

will halt

error are refers the

VI

A11

The

Each

I.

ODD

O

RAM

test

PR0Ms

long

2 RAI,I

have

ROMs

I

to insure

bad"

to

memory addresses

or

and

catastrophlc,

the

HEHORY

memory existing

NOTE:If respectively

"Bypassed debugger.

program

of

the first

word

TEST:

sirnple

"PROI"I

the

EVEN

checksums. The ROM test

that

2

CPU light

memory addresses

TEST

in

Switches

rnit"

This

crash.

128K of RAM is

(t+

bytes)

the BOOTSTRAP

bad" w111

will

ro further

(package

display tf

be RED. Because

Ul8).

:

the system is

and

516

then

is

this test will

will

option is

set to

display.

00000000

program

possible

information

(package

B

run in

U17)

tested

of

GROUP

be

used to inspect

the

and

calculates the

itself is

otherwlse

this error

can be

while

next.

A are

bypassed and

processor

The

following

read

given.

PROM 2 refers

back.

checksum

l,lessages

ok.

the

cpu

and

a CpU

PROM

to

set

OFFTOFF,ON

a

message

enters

memory after a

manner:

the

1

Each long

Then it When all conEalns

Then

Once the si-ze as

the flrst

This

a

If

bad

program

The reads be the second

memory

(worklng

after

word

is

set to its

128K

lts

the top

test

w111

"RAIyl

memory

BAD

the

location

expected

time. error.

down

the

memory

(4

bytes)

is

done,

address.

word

of each

of the

was.

128K

take

a few

=

SIZE

stops

The

from

xxXXXX" will

location

G

at the first

to

value

processor

If the failed

400H),

error.

is

set

own address

each long

128K

addiEional

seconds.

was found

(addr)

print

if the

is

out the

RAM is intermlttent

will

the

to FFFI-FFFF

program

and

word

bank

(A

memory

is read

memory is

Then the

be displayed.

then an

digit

bad location

error

attempt

occurs

debugger

and read

goes

on to next

is

read to

to

determined, it

message

error ls

value) instead

it finds.

message,

to enter

in

fail

may

see

and

the

to

if

displayed:

the

debugger

back,

see

that

is

of

Because

error

reads

debugger

operate

long word.

if it

bank checked

(A

dtglt

value

correctly

stack

correctly

stil1

exists.

just

value)

it re-

after

area

may

the

a

11

sAcE POWER-UP DISK

rI

sERvrcE

ROUTINE

BOOTSTRAP

MANUAL

[1.0]

VII.O3 Next,

to

boot

DISK

the

to:

sn6

dwn dwn up up

If the

dt

Then each)

thls lnformatlon

rear

splay:

rrBootLng

the first

are

area

"Not

BOOTSTRAP

bootstrap

sw5

dwn up dwn up

panel

from

lK

read

should

ls

Boor

lnto

be the

not

dlsk"

swltches

BOOT

boot boot reserved, reserved,

swltches

Floppy"

of

the

memory

ASCII

there

:

are

DEVICE to to Floppy

are

BOOT

at

then

an error

read

DEBUGGER

drive defaults defaults

set

to boot

dlskette

locatlon

string

'B0OT'

message is

to

determlne

to to

from

(flrst

400

0. DEBUGGER DEBUGGER

floppy

a

sectors

2

hex.

=

The flrst

42 4F

4F

dlsplayed:

what

devlce/program

the

screen

of

5lZ byres

4 bytes

hex.

54

wlll

of

If thts

If a tlmeout

assumes

there

"Put

Typing

a

rrQrr

tfBoot

and

control

re-try

If

pronpt

lnterrupt

drlvers

the flles

drlve

to

the

aystem

1lne for

ln

lnterrupt

can be

could

boot from

systen.

occurs is

ln

B00T

wtll

aborted

w111

appears

the

monitor

drlven

verlfted

also

no

dlskette

dlsplay

go

to

the

A11

readlng

be

while

trying

disk and

on

drlve

the

DEBUGCER.

Floppy.

to

try

operating

I/O up

ROM.

I/O

routlnes

lf

another

the files

to

there

and

press

Ott

to

boot,

system,

to this

Once the

ln

working

access

the

outputs:

a k"y"

Typlng

but

any

dies before

the

polnt

was

system ls

SYSTEM.BIOS

SAGE

II

tncorrectly.

diskette,

other

probleur

done

read from

are

present.

ls

key

w111

dtsplaylng

may

uslng

used.

program

-he

cause

the

1le

ln

the

polled

the

the floppy,

The

system

The floppy

a

t2

SAGE Ir

SERVTCE

MANUAL

POWER-UP ROUTINE

DISK BOOTSTRAP

(cont)

[1.0]

Usually,

gl-ven:

be

ttDrlve

lf a

floppy

error

01 02

03

04 05 05 07 08 09 0A 0B

VI I. 04 SPECIAL

(code)

}iONITOR COI{UANDS

error occurs,

dlsk

on

drlve

(O

controller

lnvalld command recallbrate or seek

imeout

t

-

nlsslng

-

no

address mark

data

found

overrun

error

CRC end-of-cylinder unknown

address

out-of-range

or fallure

:

T'here are several monltor cornmands

trouble shootLng.

ERx and EFx These commands cause

drlve and

block

transfer whlle an

number.A

'X'

of data

4K

perlod

ls

displayed

to be

('.'

for

of these

one

where codes

l)tt

fallure

spectf

lcally

designed f or

transfered

ls

)

dlsplayed

each unsuccessful

error

fron/to

for

messages w111

are:

hardware

the

spectfled

each

successful

transfer.

A11 errors are

lgnored controller can be vlewed wlth By

startlng the

select

ERO

llne

bbbb

read

can be observed

by

on

the

an

a block

to toggle.

Block

continuously

ERI bbbb Block

contlnuously

BIIO

bbbb

Block

contlnuously

Remember

EIrl

bbbb Block bbbb

continuously Remember

system. Signals

oscllloscope

(hex)

ls a

on

lt

bbbb

that

to the Floppy

to deEermlne the

multlple of

Unit ll4

read.

bbbb

(hex)

on

Unlt ll5

read.

bbbb

(hex)

on Unit

written to wlth

to

use a scratch dlskette.

(hex)

on

Unit ll5

wrltten to wlth all

to use a scratch dlskette.

lt4

(left

(rtght

(left

(right

drlve

problem,

the

4,

side

floppy)

all zeros.

floppy)

zeros.

or

ls

13

sAcE POWER-UP MAINTEI.IANCE

rI

SERVTCE

ROUTINE

TESTS

MANUAL

[1.0]

VII.O5

program

ROM controlled

sn8

sw7

up up up

up

I'lhen dlsplayed.

The

I^lhen

The cannot debugger cleared

the

Bypaesed

the

memory

be

UAINTENAITCE

verslons

by

the

GROup

sn6

srf5

srfA

dwn

up

dwn

up

dwn

up

system

For

"SAGE

frltAlrt

write

reset

can

saved

8o

these

so

that

ls

example:

II

Startup

looptt Inlt selectton button

be lnspected.

on reset.

locatlons

the

debugger

TBSTS

after

A

sY3

,.o

...

reset

Testst'

pressed

ls

:

3-Jan-83

swlrches

snz

snl

...

dwn

up

dwn

uP

up

a

message

overrldes

Regtster

stack

nay have

w111

have

at

...

the

memory from

not

addltlonal

the

back

UAINTET|ANCE

Bypassed Iooped test

MM wrlte

Iooped

f

or

the

debugger

contents

changed.

attenpt

of

the

00000 20000 ro 40000

60000

the

ro

to to

test

type

normal

ls

automatlcally

400H

The flag

to

use

dlagnostics

sAGE:

TEST:

lnit

(PROM)

loop

IFFFE 3FFFE 4FFFE TFFFE

(Reserved)

of test

startup

are

invalid

down

the

is

at

104H is

BIOS.

that

will

sequence.

entered.

as

.,,d

,*

by

are

be

they

the

also

The

Iooped over oscllloscope. duration

test swltches your

exercise

The

of

agaln.

falls

deslred

loop.

RA}i

rrLte

memory

of must

wrltlng

"'

test

each

the

if'"

selectlon

ThLs

If the

pass

Processor

be

changed

bootstrap

loop

0000

fur

repeats

ls

useful

tests

and

contlnuously

or

are

bllnks

ls

stopped

back

selectlon)

FFFF

as determlned

* ttnr

the

when

seccessful

(

Swttch

red

and

loops

watching

at

and

8

the

i: :ri

startup

the

end

the

to

dwn and

system

through

by swltch

tests

slgnal

LED iernal-ns green

of each p.*r.

is

LED

reset

a

selected

pROM

in

1lnes

set

swltches

get

to

of

3

GROUP B:

address)

*#'E-488

over

wlth

RED.

5 & 6

out

bank

and the

for

the

If any

Ttre

of the

(1ZAX)

to

T4

SAGE rI

CPU BOARD

SERVICE

MANUAL

TROUBLESHOOTING

[1.0]

VIII CPU ilOTE:

system. etc.

When

system slgns)

Most not any

the

manual.

l,lhen

experlenced

Ttrese

If the

before

power

the

sends

and

fleld problems

properly of

several

time

troubleshooting

1.

2.

3.

4.

5.

6.

7.

BOAR,D

TROUBLESHOOTING

procedures

startlng

no

stops

seaEed

refer

factory

system

ls

output

with

different

to

boots

thls

turned

to

processor

the

are

due to

ln its

problems.

rhe

CHECKLIST

a

"deadtt

technicians

TROUBLESHOOTING

Faulty

Faulty Faulty A glvlng

wt1l"

Faulty Faulty Faulty eventually

CPUs are EPROI'1s RAl,l chlps

faulty

a

do lt

delay

chlps ln the

capacitors

are falrly

RAM

cannot keep

slgn-on

all

most every

llnes

degrade

problems.

are

intended

properly,

checkout.

on

or the reset

the

termlnal

the

socket.

system

:

HIf,TS :

very

rare.

are fairly

message.

do

occur.

Tl 0 section

may work

and

cause intermlttent

:

for

troubleshooting

run

CYCLER,

button

(except

set

LED

fallure

RED,

of a

Intermittent

If the

system

clean the

ls

perhaps

chip

operatlon

wtll

FOR intermittence

keep

ln

urind these

common.

the

faulty

A

system

from

EPROM

tlme.

are

rare.

for

awhile

but

pressed,

a

couple

or a

chtp

may

operate

sectlon

hints

a

disk

a

be

most of

of

from

"dead'l

heads

ttdead"

of

G@

that is

due to

thls

our

These

U3 Rn2

u31 u2l

Even reset address, the flrst there

as

the

BOOT

parts

a

"dead"

pressed.

is

and

to

l-ook

cpu

routl-ne.

and

RNl

u63

u49

U5

system

control-

execute"

suspect.

has

no

RAM

u10 u62 U6 u73

interactlon

should

will

A

scope

1lnes.

Check

It

ls

not

u11

u46

u7

u74

have

very

slgnal

probe

start wlth

the

unllkely

with

effect

UT2 u40 U8

v2

can

T/O

this

15

the

RN5

u30

u39

v29

actlvity

be

the

PR0M slgnals

section

that

sectlon

sign-on

for

used

last

the

untll

message:

RN4

v23

u58

u20

a

short

Eo

examLne

even

problem

much

a8

lf

1s ln

RN3 u64 u59 u28

thls

the

later

tlrne

all

after

clata, code ls slgnals th;

I/

ln

the

O

sAcE

rI SERVICE

CPU

BOARD TROUBLESHOOTING

I'IANUAL

[1.0]

Speclfic

help

to have a good

sectlon

VI

I I.

O I

Ctreck then

these

look for

Pln

Pln 3 of Pln Pin Pin Pin Pln

Check

for counter Check for ptn

9.

VIII.02

checks

on

the B0OT

CHECKII{G

polnts

the

of

8

u66 u69

15 of 14 13 10

I

chaln

u68

tJ44

of

v37

of

u37

of

u54

l(hz at

64

of

Iihz at

54

CHECKING

of the lmportant

understandlng

TEST ln

TEE

with

problem

thls

SYSTEIII

an

oscllloscope.

lndicated.

shorted short

or bad

CLOCK :

crystal

open trace

short

open

short I2O

or bad buf f er

trace

or bad inverter

ohm reslstor

or a shorted

pln

U69

pln

TEE

of

1l

U75. V67 of

9

and

ADDRESS

and/or

U34. It should

system

of the Boot

manual.

oscillator.

counter

from

U69-pln

from

U44-ptn 14.

misslng or wrong

line

it ls not

If

check

STROBE

LINE :

slgnals fo1low.

program.

there ls no

If

U69

3.

1J44.

U37.

there then

for

short on

there If

be

It

Refer to

8

value

trouble

64

lt

was at

wl11 also

the

Mhz

clock

shoot line.

ICrz

U75-

Check to

AS+

If

see lf

is It should low

check

processors

If

U68-ptn

floating trace. through

elther are

connected and

trace or

Check

signal.

C'heck for a

u44.

the output ls

a bad

for

noE

be

for

are

6

high

rlght

high

elther

very

ls

AS+

or

then

floating

13

check

shorts,

rare.)

ok then

If

it

low

check ls not

on

rf the lnput

shorted

should have

socket.

pln

at

2 of U44 may be bad, the reslstor U15

ltself

or

a short

to

another

of

U44

pln

(

if the

a

bad

the lnput

the

Pin 3 of

ptn

on

tJ44

or the

same slgnal.

may

A low

not

Ul5.

llne

is

either of

6

low or

where the

U68

processor

or a bad

U44,

pln

on

same as

V44

17

ls

U68-pln as the slgnal should ls ok, but

bad.

processor. (Note:

17

U44-pln 3

If

floatlng

or

be l2O ohms, or the

could

be

the

toggllng.

slgnal

orlglnates.

is halted).

of

6

for

lJ44 check for

be

pln

ls high,

3

and

not

check for

state lndicates

trace ts

problem.

1t 1s

If

a high

an

open

lnverted

then

U44-ptn

an

open

that

open.

Bad

or

13

T6

SAGE II SERVICE MANUAL

CPU BOARD

CHECKING

TROUBLESIIOOTING

TI{E REFRESH

SIGNALS

[l.OJ

VIII.03

Check correct, or the

(known

for

the

you

should

refresh

but RAO RA7 for

Slgnals

and

0 errors. pauslng

VIII.

Proper display the normal lf lt lnterferes they buffers remove

meSsage

CIIECKING

for

the

to happen).

refresh

have

signals to the

whlch

+5V at lnEervals

Good slgnals wtl1

ln

the

CIIECKING

04

functloning

slgn-on

Boot

R0Ms.

are

ehorted

w111

buffers

appears.

always

REFRESH

THE

refresh

Khz

64

timing

signal.

refresh

missing signals

are

shorted

nlddle.

wlth

to the

U63, U62, U30 and

l-s

sllghtly of

lJ32

U34,

during the refresh.

THE R.AI{

of message when using either

The

RAM clrcuitry

the data

drlve the

or a

thts

At

slgnals to the

RAMs

together wtll show

change

SIGNALS :

the

RAMs

data

SIGtrAtS:

signal at

pc

polntr

by holding the

or

quickly

is

bus.

bus on the

tJ23.

f

then the

board

tro

MMs,

a

slgnal shorted

not

can only affect the

Check

If the read

of

3

fault

matter

a mld-level

They

between

necessary

the MC6889

processor

Reset and

V32, If this

delay line

can

To check

reset

may cause

ground

the

signal

(tJ42)

also

how

RAI'I test

slde.

see lf

cause

dead the board ls

thts

send

swttch in.

to another I

voltage

lnconslstent

and +5V

for

the

ROMs

system

buffers

faulty,

ls

To test

the

ls

not

is

bad

problerns

nothing

Check

ine.

between

wlthout

system to

the

or

start-up

to

see lf

the

this

sign-on

The other by the

data

posslble

lines

point

betng

lnterference

of

shorted

to the

with

parity

the data bus

decoder

chlps

can be

and

U64

caused

U3l.

I7

SAGE

Ir SERVICE

CPU BOARD

REPLACING

MANUAL

[1.0J

TROUBLESHOOTING TITE

COMPUTER

BOARD

VIII.OS

l.

2.

REPLACING Dlsconnect

Remove

back

Dl-sconnect

3.

4. Remove Gently

5.

be moved

front

the

the top

from

Ttre

6.

board, €lther

wlth

the

all but the

panel.

all fastenlngs

the bend the

back sufflciently

panel.

of the front

the

chassis.

antl-statlc

THB

CO}IPUTER

power

cord.

two

cables

connected to securlng

back

panel

Tllt

panel.

ln

or

procedures.

BOARD

bottom screws

the

circult board to

outward

that the

the front

out

edge

Slide

of the

the

:

around

computer

so that the

the

vent

board.

clrcuit

LED on the front

of

the board

board foreward

chassLs,

must only

holes

the

chassls.

board

w111

untll tt

to remove tt

be

on the

may

clear

clears

handled

l8

SAGE

rr

sERVrcE

MANUAL

TEI'{PEMTURE

[1.0J

TEST

IX

Ideally,

place the ls

general

The

The true tend that to

normal

identlfy

Remember

nornally qult

OPERATIOH:

TEI{PERATURE

a

the

system

unlt ts

very

program

expensive

guldellnes

technlcian

test

ls

measure

to fry the

customer

room

the

that

TEST

servlce

truly

needs

somewhat

of the

or frost-bLte

ln

adverse

temperature

problem

al-l

operatlng.

center

and

sensitlve

and

for

only

of an

temperature

who

as

systems

:

wj.ll

vary

the

to somewhaL checking for

a heat

art

chips

cornplained

weather

of

tttemperature

conditions.

your

have

temperature

temperature time-consurnl-ng,

as

some hot

a

temperature

up and

variations.

a

temperature problem.

gun

and

cans of

the technlcian

being applied

doing

of the

more damage

problem

service

senslt.ivett

or

eenter

chamber

down

this

ttfreeze"

has

to

the

than

is probably

Slight

cold llnlt

varlations

should

or not.

to

test

little

board.

good.

where

in

whlch

determlne

As thls

outllnes

spray,

ldea

Beglnners

Remember

not

from

be enough

thev

to

if

nethod

some

of the

tryi.ng

th;

to

will

l.

2.

3.

4.

Loose

Remove

If the start over

varying

HEAT:

heat gun

to

Let the contractlon aLlcause

cootr,: temperature

Hotr-ding may of expansion connectlons.

cables

the

system

the

and

the

Visually

evenly

cause

board

sections

down

A

the

permanentLy

the

board.

or

lid from

wl11

test.

over

temperature.

dlsconafort

occurs

to

can

sensLtlvity

nozzLe

and

bad

Otherwi.se,

(See

dlvtde

over the

cool

of the

a

single

of

danage

let

contraction

sockets

the

boot

the

if

down

within

board"

ttf

on

a

the

may

system.

fairly

set

writeup

the

board lnto

sectlon.

touched

between

the

chip

reezett

(or

ln

the

chip

the

chlp,

board

occurs

masquerade

conslstently,

the

on

but

lntervals

chips

problen

a

If

socket

spray

cold

w111

usually

Use short

warm

switches

the

POWER-UP

sectLons.

The

chips should

not

enough

and

socket

occurs

or connector).

can

be

range.

make the

up

between

within

as a

the

temperature

boot

on the

Apply

to

so that

connectlons.

try

used

Again

bursts

chlps

to

back

routlne

heat

be

burn

expanslon

to narrow

to

use

system

over

bursts

and

problem.

CyCLER and

to reboot

whlle

)

hot

the

check

cautlon. fall sectlons

so that

wlth

enough

socket

skin,

and

the

f

ancl

a

Do

or

r9

SAGE INTERI"TITTANCE

rI

SERVICE

CIIECKLIST

MANUAL

[1.0]

X INTERIITITTATVCE

If the CYCLER:

1..

2.

system

RAMS used, bad

RAt'{

Check

ls

are suspect

try

by swapplng

all

pinched. so1ld

3.

Inspect for

and

CHECKLIST

lntermittentr p€rforn

operating

cables

Posts for

not

wtggle

chlps Press down flrrnly conneetlon see

lf

socket.

any

wlth

are

Iook

socket.

h.

Are the Underrated

have to caps problems

rrcrked

cause

MUST

caPacltors

capacltore

for

problems.

be replaced

sooner

in

intermlttent

wlthout

one by

and

connectors.

cable

when

that

on

the

curled

f

or foreign

are not

all

socket.

under

the

rtght

(09

some

tlne Even lf

or later.

:

it.

one

wi th a

connectors touched.

seated

chlps

to

Inspect

the

matter

values?

uf

6v)

before the

the

wlth

10uf

thls

checkllst,

fallures.

problen

no

If

good

Ttre

cables

ln

the

completely lnto

Lnsure

that they

the

chtp

lnstead

Jaurmed

Check thelr voltage

across

the

caps flnally

voltages

25V caps as

If RAI,IDISK

occurs, lsolate

RAM.

should not

pc

boards

pins

of all

ln wlth

LzV

look

then

are

going

of

the

power

degraded

ok,

they

re-teet

ls

have

should

the

socket.

naklng

the

chlps to

lnto

pln

ratlng.

supplles

enough

ar..,.

of these

w111

wlth

belng

the

been

stand

good

the

of a

may

cause

5.

6.

Check for Check for

graylsh

fllled.

be are

also

run

the

CYCLER

temperature

lnproper

solder

areas

"Beads"

suspect.

test.

sensltlve

solder

on the

of solder

Touch

up the

chlps.

connectlons.

plns.

A11

lnstead

board

wlth

the

Use

TEMPEMTURE

Inspect

feed-through

of a

smooth

a

snall

the

board

holes

base

solder

test.

should

on a

ttp

for

pin and

20

SAGE

rr

SERVTCE

I'{ANUAL

CYCLER

.0

I

TEST

J

XI

CYCLER

ls

a

TEST

test

dlagnose problens

for

flndlng

CYCLER

tests

dlsk

RAM

MEMORY DISK DISK

STMPPING DRIVES

SERIAL

PORT PAMLLEL REAL

TIME

ATTACH

PROCESS SWITCHES

Ttrese descrlbed each

servlce EQUIPTTENT

tests

are

ln

test has

personnel

f,EEDED:

separate

been

:

of

and

drlves

PORT

CLOCX

run

repeatedly

carefully

unless

overall

to

valldate

that

(noden

(printer (interrupt

(an

optlonal

chapters

advlsed

system

GOOD

are

not

port)

check)

test)

over

many

of

thls

determlned

to

do so

performance.

systems.

operatlng

properLy.

cycles.

sectl-on.

and

should not

by SAGE.

It

It ls

Each

The teet

is

used

especlally

of

the criterla

be

changecl

both

useful

teets is

for

by

to

CYCLER

A OPERATION

See

belng both

dlskettes

prlnter (optlonal)

NOTES:

the

Software

run

or lf

an

track and

80

(set

of

2)

prlnt

to

Installation

the

system

a

40

track

test

notes

to

be tested drive.

results

tf

this is

for

record

the flrst

ls

a BRIDGE

keeplng.

tlme

systen

CyCLER

is

whlch has

2l

Sage II Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual