IBM 3205 Setup guide
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- - , -Maintenance Li.rary
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Color Display Console
Maintenance Information
...
SY18-2121-1
Second
Edition,
(September,
1985)
This
major
revision
obsoletes
SYl8-2l2l-0
and
SN18-2262 (TNL).
Changes
or
additions
to
the
text
and
illustrations
are
indicated
by a
vertical
line
to
the
left
of
the
change.
IBM
has
prepared
this
maintenance
manual
for
the
use
of
IBM
customer
engineers
in
the
installation,
maintenance,
or
repair
of
the
specific
machines
indicated.
IBM
makes no
representations
that
it
is
suitable
for
any
other
purpose.
It
is
possible
that
this
material
may
contain
reference
to,
or
information
about,
IBM
products
(machines
and
programs),
programming,
or
services
that
are
not
announced
in
your
country.
Such
references
or
information
must
not
be
construed
to
mean
that
IBM
intends
to
announce
such
IBM
products,
programming,
or
services
in
your
country.
Publications
are
not
stocked
at
the
address
given
belowl
requests
for
IBM
pUblications
should
be
made
to
your
IBM
representative
or
to
the
IBM
branch
office
serving
your
locality.
A form
for
reader's
comments.
is
provided
at
the
back
of
this
pUblication;
if
the
form
has
been
removed, comments
may
be
ad'dressed
to
IBM
Corporation,
Department
6Rl
J,
180 Kost Road,
Mechanicsburg,
PA
17055
U.S.A.
IBM
may
use
or
distribute
any
of
the
information
you
supply
in
any
way
it
believes
appropriate
without
incurring
any
obligation
whatever.
You
may,
of
course,
ccmtinue
to
use
the
information
you
supply.
©
Copyright
International
Business
Machines
Corporation
1984,
1985
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-.----.---.--~-----
---------.---.----~~-"-.".
SAFETY
NOTICE
CAUTION
•
To
avoid
electrical
shock,
turn
power
o~~
and
disconnect
the
power plug
be~ore
exchanging any
FRU.
. •
CRTs
are
under vacuum.
All
persons
working
near
an exposed
CRT
should wear
sa~ety
glasses
and
long-sleeved
clothing
(or
comparable
protection).
•
Do
not
power
on
without
rear
cover.
•
Do
not
adjust
inside
o~
the
video
unit.
•
The
power attachment
cable
plug
(when
supplied)
is
approved
~or
use
with
this
console
and meets
the
relevant
testing
laboratory,
country,
or
test-house
standards.
For your
sa~ety,
the
plug must
be
connected
to
a
properly
wired and
grounded
receptacle.
An
improperly wired
receptacle
could
place
a hazardous
voltage
on
accessible
metal
parts
o~
the
work
station.
.
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Safety
Notice
---~-.-------.---
---~.---.-
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--~----
Rules
for
Safety
If
(1)
you know the safety rules for working with
electrical and mechanical equipment and
(2)
you
observe the rules, you can work safely with IBM
equipment.
Do
not
fear
electricity,
but
respect it.
While you are maintaining IBM equipment,
(1)
observe every safety precaution possible and
(2)
observe the following safety rules.
Work
Environment
•
Do
not work alone
in
hazardous conditions or
near equipment
that
has dangerous voltages.
Always inform your manager if the conditions or
voltages are a possible problem.
• Always look for possible hazards
in
your work
environment. Examples of hazards are: moist
floors, nongrounded extension cables, power
surges, and missing safety grounds.
•
Do
not perform any action
that
makes the
product unsafe or
that
causes hazards for the
customer personnel.
• Before you
start
the equipment, ensure that other
CSRs and customer personnel are not
in
a
hazardous position.
•
Do
not wear loose clothing that can be trapped in
the moving parts of a machine. Ensure
that
the
sleeves of your clothing are fastened or are rolled
above the elbow.
If
your hair
is
long, or if you
wear a neck scarf, fasten it to make it safe.
• Insert your necktie into your clothing or fasten it
with a clip (preferably nonconductive)
at
approximately 8 centimeters
(3
inches) from its
end.
•
Lift
the equipment or parts by standing or
Pl1shing
up with your stronger leg muscles; this
action removes the strain from the muscles
in
your back.
Do
not lift any equipment or parts
that
are too heavy for you.
• Put removed machine covers
in
a safe place while
you are servicing the machine. Reinstall the
covers before returning the machine to the
customer.
iv
IBM
3205
Color
Display
Console
• Always keep your CSR tool kit away from walk
areas so
that
other persons cannot trip over it.
For example, keep the kit under a desk or table.
• Observe good housekeeping practices
in
the
area
of the machines while you are performing
maintenance and after completing it.
• After maintenance, reinstall all safety devices,
such as guards, shields, labels, and ground wires.
Exchange safety devices
that
are worn or
defective. (Remember: the safety devices protect
you from a hazard. You destroy their purpose if
you
do
not reinstall them when you have
completed the service call.)
Electrical Safety
•
If
possible, always unplug the power·supply cable
before you work on a machine. When you switch
off power
at
the wall box, lock the switch in the
off position or attach a
DO
NOT OPERATE
tag
(Z229·0237)
to the switch.
Note: A non·IBM attachment to an IBM machine
may be powered from another source and may be
controlled
by
a different switch or circuit
breaker.
• Switch off all power before
(1)
removing or
assembling the main units of the equipment,
(2)
working near power supplies,
(3)
inspecting
power supplies, or
(4)
installing changes in
machine circuits.
• Unless the maintenance documents specifically
instruct you,
do
not service the following
parts
with power on if the
part
is removed from its
installed position in the machine: power supplies,
pumps, blowers, motor generators, and other units
with voltages
that
are more than
30
V ac or
42.4
V dc. (This rule ensures
that
correct grounding is
maintained.)
•
If
you really need
to
work on equipment
that
has
exposed live electrical circuits, observe the
following precautions:
Ensure
that
another person who is familiar
with the power·off controls is near you.
Another person must be there to switch off
the power, if necessary.
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Do
not wear jewelry, chains, metal-frame
eyeglasses, or other personal metal objects,
(Remember: if the metal touches the machine,
the flow of current increases because the
metal
is
a conductor.)
Use only insulated probe tips or extenders.
(Remember: worn or cracked insulation
is
unsafe.
Use only one hand while you are working on
live equipment. Keep the other hand
in
your
pocket or behind your back. (Remember:
there must be a complete circuit for an
electrical shock to occur. This precaution
prevents your body from completing the
circuit!)
When you use a tester, set its controls
correctly and use insulated probes that have
the correct electrical specification.
Do
not touch objects
that
are grounded, such
as metal floor strips, machine frames, or
other conductors. Use suitable rubber mats
obtained locally, if necessary.
• When you are working with machines having
voltages more than
30
V ac or
42.4
V dc, observe
the special safety instructions given
in
customer
engineering memorandums
(CEMs).
• Never assume: that power has been removed from
a circuit. First, check
that
it has been removed.
•
Do
not touch live electrical circuits with the
surface of a plastic dental mirror. (Remember:
the surface of the dental mirror is conductive and
can cause damage and personal injury.)
•
If
an electrical accident occurs:
1.
,Use
caution;
do
not
be a victim yourself.
2.
Switch
off
the
power.
3.
Instruct
another
person
to
get
medical aid.
4.
If
the
victim is
not
breathing,
perform
mouth-to-mouth rescue
breathing.
See
"Electrical Accidents-First Aid" (following).
Mechanical Safety
Do
not touch mechanical parts when you are
(1)
lubricating a part,
(2)
checking for play, or
(3)
doing other similar work.
Safety Glasses
Wear safety glasses when:
• Using a hammer to drive pins or similar parts
• Using a power drill
• Using a spring hook to attach or remove a spring
• Soldering parts
• Cutting wire or removing steel bands
• Using solvents, chemicals, or cleaners to clean
parts
• Working in any other conditions
that
could injure
your eyes.
Tools, Testers,
and
Field-Use Materials
•
Do
not use tools and testers
that
have not been
approved by IBM. Ensure
that
electrical hand
tools, such as Wire-Wrapl tools and power drills,
are inspected regularly.
• Exchange worn and broken tools and testers.
•
Do
not use solvents, cleaners, or oils that have
not been approved
by
IBM.
ITrademark of the Gardner·Denver
Co,
Safety
Notice
v
Summary
Prevention is the main aid to electrical safety.
Always think about electrical safety and use good
practice, for example:
• Ensure
that
the customer's power receptacle
matches the IBM equipment specifications.
• Inspect power cables and plugs; check for loose,
damaged, or worn parts.
• Review the procedure in the maintenance
documents before you remove a
part
that
can
hold an electrical charge from the machine.
Carefully discharge the necessary parts exactly as
instructed by the procedure.
•
Do
not use a normal light (for example, a table
lamp) as an extension trouble light
at
a machine.
Never assume
that
a machine or a circuit is safe. No
machine is always completely safe. You may not
know the exact condition of a machine because, for
example:
•
The
power receptacles could
be
defective.
• Safety devices or features could be missing or
defective.
• The maintenance and/or
EC
changes
could
be
wrong or not complete.
•
The
design could have a problem.
• The machine could have damage, caused when it
was shipped.
• The machine could have an unsafe change or
attachment.
• An engineering change or a sales change could be
wrongly installed.
• The machine could be deteriorated
(1)
because it
is old or
(2)
because it operates
in
an extreme
environment.
• A
part
could be defective, therefore causing a
hazard.
• A
part
could be wrongly assembled.
These are some of the ways
that
the condition of the
machine could affect safety. Before you
start
a
service call or'procedure,
use
good
judgment
and
use
caution.
vi
IBM
3205
Color
Display
Console
Electrical
Accidents-
First
Aid
When performing rescue procedures for an electrical
accident, do as follows:
• Use Caution:
If
the victim is still
in
contact with
the electrical·current source, remove the power;
to do this, you may need to operate the room
emergency power·off
(EPO)
switch or the
disconnecting switch.
If
you cannot find the
switch, use a dry wooden rod or other
nonconductive object to pull or push the victim
away from contact with the electrical·current
source.
•
Work
Quickly:
If
the victim is unconscious, he/she
may need
(1)
mouth·to·mouth rescue breathing
and possibly (2) external cardiac compression if
the heart is not beating.
• Call
for
the
Rescue Service: such as the
ambulance or the hospital. Instruct another
person to call for medical aid.
Determine if the victim needs mouth·to·mouth rescue
. breathing.
If
he/she does, perform the following
steps.
CAUTION
Use extreme
care
when you perform rescue
breathing
for
a victim who may have breathed-in
toxic fumes.
Do
not
breathe-in
air
that
the
victim
has breathed-out.
1.
Prepare for rescue breathing:
a. Ensure
that
the victim's airway is open and
that
it is not obstructed; check the mouth for
objects
that
may be obstructing the airway,
such as chewing gum, food, dentures, or the
tongue.
b.
Place the victim on his/her back, put one
hand behind the victim's neck, and put the
other hand on his/her forehead.
c.
Lift the neck with one hand, and tilt the head
backward by pressing on the forehead with
the other hand 0 .
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2.
Look, listen, and feel to determine if the victim
is
breathing freely:
a. Put your cheek near the victim's mouth and
nose.
b.
Listen and feel for the breathing-out of air.
At
the same time,
look"
at
the victim's chest
and upper abdomen to see if they move up
and down.
3.
If
the victim is not breathing correctly:
a. Keep the victim's head tilted backward (see
D).
Continue to press on the forehead with
your hand;
at
the same time, rotate this same
hand so
that
you can pinch together the
victim's nostrils with your thumb and finger
B
II
b.
Open your mouth wide and
take
a deep
breath. Make a tight seal with your mouth
around the victim's mouth IJ and blow into
the victim's mouth.
•
c.
Remove your mouth to let the victim
breath-out, and check
that
the victim's chest
moves down D
II
d.
Repeat steps
band
c once every 5 seconds
either until the victim breathes for himself/
herself or until medical aid comes.
Reporting Accidents
Report, to your field manager, all electrical accidents,
possible electrical hazards, and accidents that nearly
occurred. (Remember: an accident
that
nearly occurs
might be caused
by
a design problem; your immediate
reporting ensures that the problem will be solved
quickly.)
Report also all small electrical shocks. (Remember: a
condition
that
causes a small shock need only differ
slightly to cause serious injury.)
Safety
Notice
vii
...
viii
IBM
3205
Color
Display
Console
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PREFACE
The
IBM
3205
Color
Display
Console
is
a
console
terminal
that
consists
of
three
units:
the
video
unit,
logic
unit,
and
keyboard
unit.
If
one
of
the
units
fails
during
operation,
the
customer
should
call
IBM
for
console
repair
service.
This
document
provides
the
information
that
the
IBM
customer
engineer
needs
to
analyze
and
repair
units
at
the
customer
site.
This
manual
assumes
that
the
reader
has
a
basic
understanding
of
processors
and
display
console
and
their
relationship
to
one
another.
This
manual
contains
the
following
information:
Chapter
1,
"Introduction"
on
page
1-1
gives
a
general
description
of
the
IBM
3205.
Chapter
2,
"Problem
Determination
Guide"
on
page
2-1
contains
procedures
to
follow
when a
problem
occurs.
Chapter
3,
"Removal
and
Replacement
Procedures"
on
page
3-1
describes
how
to
remove
and
replace
field-replaceable
units
CFRUs).
Chapter
4,
"3205
Part
Numbers" on
page
4-1
lists
the
part
numbers
of
the
IBM
3205.
Chapter
5, "IBM
3205
Safety
Inspection
Guide"
on
page
5-1
identifies
potentially
unsafe
conditions
on
machines
that
are
being
inspected.
Each
machine,
as
it
was
designed
and
built,
had
required
safety
items
installed
to
protect
the
owners,
operators,
and
service
personnel
from
injury.
The
checklist
in
this
chapter
addresses
those
items.
Appendix
A,
"IBM 3205
Installation
Instructions"
on
page
A-I
describes
how
to
setup
the
IBM
3205
console
and
attach
it
to
the
processor.
Appendix
B,
"Packing
Instructions"
on
page
B-1
illustrates
procedures
to
follow
when
packing
is
needed.
Related
publications:
IBM
3179
Color
Display
Station
Description,
GA18-2177
IBM
3205
Color
Display
Console
Operator
Reference
and
Problem
Determination
Guide,
GA18-2339
IBM
4361
Processor
Operating
Procedures,
GA33-1570
IBM
4381
Operations
Manual,
GA24-3949
Preface
ix
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IBM
3205
Color
Display
Console
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CONTENTS
Chapter
1.
Introduction
1-1
1.1
Video
Unit
1-1
1.2
Keyboard
Unit
1-!
1.3
Logic
Unit
1-1
1.4
Indicators,
Switches,
and
Controls
1-4
1.4.1
Indicators
1-4
1.4.2
Switches
and
Controls
1-4
1.5
Operator
Messages
(LINE
25)
1-5
1.6
Offline
Tests
1-6
1.7
Data
Flow
1-7
1.8
122-key
Keyboard
(Keyboard-To-Display
Test)
1-8
1.9
124-Key
Keyboard
(Keyboard-To-Display
Test)
1-9
Chapter
2.
Problem Determination Guide
2-1
2.1
Console
Quick
Check
2-2
2.2
Symptom
Index
2-4
2.2.1
Operator
Messages
2-6
2.2.2
Power-On
Light
or
Status
Light
Problem
2-8
2.2.3
Display
Problem
2-11
2.2.4
Keyboard
Problem
2-21
2.2.5
Audible
Alarm
Problem
2-24
2.2.6
Monocase/Dualcase
Switch
Problem
2-26
2.2.7
Color
Switch
Problem
2-27
2.2.8
Pedestal
or
Power
Cord
Problem
2-28
2.2.9
Security
Key
Problem
2-28
2.3
Offline
Tests
2-29
2.3.1
Offline
Test
Procedure
2-31
Chapter
3.
Removal
and Replacement Procedures
3-1
3.1
Keyboard
Unit
3-1
3.2
Logic
Unit
3-2
3.2.1
Logic
Unit
Cover
3-2
3.2.2
Logic
Board
Assembly
3-4
3.2.3
Security
Keylock
Assembly
3-5
3.3
Video
Unit
3-6
Chapter
4.
3205
Part
Numbers
4-1
Chapter
5.
IBM
3205
Safety
Inspection
Guide
5-1
5.1
Preparation
5-2
5.2
General
Guidelines
5-2
5.3
General
5-3
5.4
Video
Unit
5-4
5.5
Low
Voltage
5-5
5.6
High
Voltage
5-5
5.7
Keyboard
Unit
(Membrane
type)
5-6
5.8
Keyboard
Unit
(Capacitance
type)
5-7
APpendix
A.
IBM
3205
Installation
Instructions
A-I
A.!
Set
Switches
On
the
Underside
of
the
Keyboard
A-2
A.2
Attach
Pedestal
to
Logic
Unit
A-3
A.3
Attach
Pedestal
to
Video
Unit
A-5
A.4
Connect
Cables
to
the
Rear
A-7
A.5
Attach
Cable
Clamp
A-S
A.6
Set
Power
On
A-9
A.7
Adjust
the
Brightness
of
Your
Display
A-IO
A.S
Check
Audible
Alarm
A-II
A.9
Personalize
the
Console
for
the
Operator
A-12
Appendix
B.
Packing
Instructions
B-1
B.l
Video
Unit
B-1
B.2
Keyboard
Unit
B-1
B.3
Logic
Unit
B-2
B.4
Three
Units
In
A
Master
Carton
B-2
Contents
xi
xii
IBM
320S
Color
Display
Console
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FIGURES
1-1.
1-2.
1-3.
1-4.
1-5.
1-6.
1-7.
2-1.
2-2.
2-3.
2-4.
2-5.
2-6.
2-7.
2-8.
2-9.
2-10.
2-11.
2-12.
2-13.
2-14.
2-15.
2-16.
2-17
.
2-18.
2-19.
2-20.
2-21.
2-22.
2-23.
2-24.
2-25.
2-26.
2-27.
2-28.
2-29.
2-30.
2-31.
2-32.
2-33.
2-34.
2-35.
2-36.
2-37.
2-38.
2-39.
2-40.
2-41.
2-42.
2-43.
2-44.
2-45.
3-1.
3-2.
3-3.
4-1.
4-2.
5-1.
5-2.
5-3.
5-4.
5-5.
A-I.
A-2.
A-3.
A-4.
A-S.
A-6.
Console
Units,
Accessories
and
Parts
1-2
IBM
3205
1-3
Setup
Switches
1-5
Offline
Test
Pattern
1-6
IBM
3205
Data
Flow
1-7
Keyboard-to-display
test
(I22-key
keyboard)
1-8
Keyboard-to-display
test
(124-key
Katakana
keyboard)
1-9
Keyboard
Cable
2-6
Keyboard
Cable
2-7
Video
Cable
2-8
Pin
Voltages
in
Video
Cable
2-10
Display
A
2-11
Display
B
2-11
Display
C
2-12
Display
D
2-12
Display
E
2-12
Display
F
2-13
Status
Light
2-13
Status
Light
2-14
Status
Light
2-15
Test/Normal
Switch
2-16
Video
Cable
2-17
Status
Light
2-17
Video
Cable
2-18
Status
Light
2-18
Test/Normal
Switch
2-19
Without-Cursor
Character
2-20
All
Characters
2-21
Status
Light
2-21
Some
Character~
2-22
Automatic
Characters
2-22
Double
Characters
2-22
Different
Characters
2-23
Setup
Switches
2-23
Audible
Alarm
2-24
No
Alarm
2-24
Video
Cable
2-25
Audible
Alarm
Control
Knob
2-25
Monocase/Dualcase
(A/A,a)
Switch
2-26
Color
(00/0000)
Switch
2-27
Pedestal
2-28
Power Cord
2-28
Security
Key
Failure
2-28
Offline
Test
Pattern
2-30
Switches
Setting
2-31
All-character
Pattern
in
Dualcase
(A,a)
2-32
All-character
Pattern
in
Monocase (A)
2-33
7-color
Pattern
2-34
4-color
Pattern
2-34
2-color
Pattern
2-34
Setup
Switches
and
Jumpers
Status
2-35
Characters
displayed
in
the
Keyboard-to-disp1ay
test
2-37
Logic
Unit
Cover
3-3
Logic
Board
Assembly
3-4
Security
Keylock Assembly
3-5
IBM
3205
Final
Assembly
4-1
Logic
Unit
4-5
Video
Unit
5-4
Grounding
Pass
Schematics
5-5
Grounding
Pass
Schematics
5-5
Keyboard
Unit
(Membrane
type)
5-6
Keyboard
Unit
(Capacitance
type)
5-7
Console
and
Parts
A-I
Turn Keyboard A-2
Setup
Switches
A-2
Set
Pedestal
A-3
Lock
Gray
Latches
A-3
Ensure
Lock A-4
Figures
xiii
--.-.'---""'"
.-
.... --
-.~-~
-~-~---
....
-.-
....
------~
..
---
..
----
..
--~~~~=
A-7.
A-S.
A-9.
A-lO.
A-ll.
A-12.
A-13.
A-14.
A-IS.
A-16.
A-17
•
A-IS.
A-19.
A-20.
A-2l.
A-22.
A-23.
A-24.
A-2S.
A-26.
A-27.
A-2S.
B-1.
B-2.
B-3.
B-4.
Turn
Video
Unit
A-S
Hook
Pedestal
to
Video
Unit
A-S
Turn Video
Unit
A-6
Connect
Video
Cable
A-7
Keyboard
Cable
A-7
Connect
Power
Cord
A-7
Prepare
Cable
Clamp
A-S
Close
Cable
Clamp A-a
Attach
Cable
Clamp A-S
Unlock
Security
Key
A-9
Power
off
A-9
Plug
in
Power
Cord
A-9
Power on A-9
Set
Switches
A-lO
Adjust
Brightness
Control
A-IO
Color
Test
Pattern
A-lO
Check
Audible
Alarm
A-II
Adjust
Audible
Alarm
A-II
Set
Test/Normal
Switch
A-II
Position
the
console
A-12
Adjust
Keyboard
Angle
A-12
Store
Manual
into
Pocket
A-13
Packing
Video
Unit
B-1
Packing
Keyboard
Unit
B-1
Packing
Logic
Unit
B-2
Packing
Three
Units
B-2
xiv
IBM
320S
Color
Display
Console
c
(
(f'"
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[
CHAPTER
1.
INTRODUCTION
The
IBM
3205
Color
Display
Console
is
a
seven-color
(using
only
four
colors),
display
console
that
consists
of
three
units:
video
unit,
logic
unit,
and
keyboard
unit.
Figure
I-Ion
page
1-2
shows
the
individual
console
units,
and
Figure
1-2
on
page
1-3
shows
the
IBM
3205
prepared
for
normal
operation.
The
IBM
3205
is
available
in
one
model
and
has
a
122-key
typewriter
keyboard
(or
124-key
Japanese
Katakana
keyboard).
No
optional
features
exist.
1.1
VIDEO
UNIT
The
video
unit,
which
connects
to
the
logic
unit
by
a
cable,
has
an
analog
card,
power-supply
assembly,
and
a
14-inch,
high-resolution,
cathode
ray
tube
(CRT)
that
can
display
up
to
1920
characters
(24
lines
of
80
characters).
Seven
colors
(blue,
red,
green,
turquoise,
pink,
yellow,
and
white)
can
be
obtained
by
combining
the
three
primary
colors.
The
display
surface
has
an
operator
information
area
(line
25)
that
is
separated
from
the
remainder
of
the
display
image
by
a
horizontal
line.
The power
supply
in
the
video
unit
generates
+12 V
dc,
+5 V
dc,
and
+88 V
dc,
and
supplies
+5 V dc
and
+12 V
dc
to
the
logic
unit
via
the
video
cable.
The +12 V
dc
is
used
for
the
audible
alarm
on
the
logic
card.
The +88 V
dc
is
used
in
the
video
unit.
The
video
unit
has
a
brightness
control
knob,
a power
on-off
(I
0)
switch
and
a
power-on
indicator.
For
operator
convenience,
a
pedestal
makes
it
possible
to
tilt
and
rotate
the
video
unit.
1.2
KEYBOARD
UNIT
The
IBM
3205
keyboard
unit
has
a
122-key
typewriter
keyboard
(or
124-key
Japanese
Katakana
keyboard).
The
keyboard
contains
other
special-function
keys.
Some
keys
are
typematic,
that
is,
they
will
repeat
their
function
for
as
long
as
they
are
held
down.
There
are
two
types
of
keyboards:
•
• Membrane
type
(new
type)
Capacitance
type
(old
type)
Membrane-type
keyboard
has
a
plastic
bottom-cover.
Capacitance-type
keyboard
has
a
metallic
bottom-cover.
Both
types
are
functionally
the
same
and
plug
compatible.
The
keyboard
unit
connects
to
the
logic
unit
by
a
cable.
C:
1.3
LOGIC
UNIT
c:'
The
logic
unit
provides
controls
for
the
other
units.
It
has
a
logic
board
and
a
security
key.
It
has
cable
connections
for
the
video
unit,
keyboard
unit,
and
a
host
processor.
The
logic
board
contains
the
Test/Normal
switch,
Monocase/Dualcase
switch,
color
switch,
audible
alarm,
and
status
light.
Chapter
1.
Introduction
1-1
Monocase/Dualcase
(A/A,a)
Switch
Color
(00/0000)
Switch
Status Light
Test/Normal
Switch
Keyboard
Unit
/~
Cable Clamp
Video
Unit
Cl
Brightness
Control Knob
On/Off
(I
0)
Switch
Power-On
Light
Logic
Unit
;-;:F;;~~---
Security Key
~
V"'oUn~Ped.""
Logic
Unit
Security Keylock
Figure
1-1.
Console
Units,
Accessories
and
Parts
1-2
IBM
3205
Color
Display
Console
Audible Alarm
Volume Control Knob
3205 MIM
1------
3205
PDG
1-----
Power Cable
C'
/
j'
(
')
".
./
(
\.
c
"
(~
{
(";
c:
{~
(~
('
(~
(
\
(:
(
(~
(
(/
.
('
.
{
(.~
(
('
1-
2.
\-',
1.4.1
INDICATORS
The
indicators
provided
are
the
status
light
on
the
logic
unit
and
the
power-on
light
on
the
video
unit.
The
power-on
light
is
on when
ac
power
is
applied
and
dc
power
is
generated.
When
the
Test/Normal
switch
is
set
to
the
Test
position#
the
status
light
blinks
after
diagnostics
verify
the
operation
of
the
IBM
3205
hardware.
When
the
Test/Normal
switch
is
set
to
the
Normal
position,
the
status
light
stays
on
wh~n
the
IBM
3205
receives
data
or
commands
through
the
coaxial
interface.
The
audible
alarm
sounds
under
various
conditions
to
attract
the
operator's
attention;
it
is
also
used
to
generate
the
keyboard~lick
sound.
The
bottom
row on
the
display
is
used
to
indicate
machine
status
and
error
conditions
to
the
operator
by
special
symbols
or
by
printed
messages.
This
line
is
also
referred
to
frequently
as
line
25.
1.4.2
SWITCHES
AND
CONTROLS
The
IBM
3205
has
the
following
switches
and
controls:
•
•
•
A Power
I/O
switch#
which
is
on
the
video
unit#
controls
the
application
of
power
to
all
console
units.
A
Test/Normal
switch
on
the
logic
unit
sets
the
IBM
3205
to
the
normal
mode
of
operation
or
places
it
in
an
offline-test
mode.
A
status
light
blinks
when
the
Test/Normal
switch
is
set
to
Test
and
stays
on
when
the
switch
is
set
to
Normal
and
when
the
console
receives
a
signal
from
the
host
processor.
• A
Brightness
control
on
the
video
unit
allows
for
adjusting
intensity
of
the
screen
image.
•
An
audible
alarm
knob
at
the
rear
of
the
logic
unit
allows
for
adjusting
the
volume
of
the
alarm
and
click.
• A
Monocase/Dualcase
(A/A#
a)
switch,
when
set
to
Monocase (A)#
displays
all
characters
in
uppercase
only.
When
set
to
Dualcase
(A#
a),
the
characters
are
displayed
in
uppercase
and
lowercase.
•
•
•
A
security
keylock
provides
a
key-controlled
lock
for
the
IBM
3205.
When
the
key
is
in
the
off
position,
the
screen
changes
to
blanks
(except
for
the
cursor
and
operator
information
area,
after
which
data
cannot
be
entered#
modified#
or
displayed
at
the
console.
A
Color
switch
(00/0000)
changes
the
base
colors
on
the
display
to
simulate
a
monochrome
screen.
Setup
switches
are
located
on
the
underside
of
the
keyboard
unit.
Their
settings
define
the
keyboard
language
and
are
set
by
the
CE
during
installation.
1-4
IBM
3205
Color
Display
Console
o
(
(
"'-
.(
"'--/
c
,.,~.,
..
,
...
-.
-,-_
..
_....
_--
-------------
c
c
c
(>
[
c'
C
'
, .
The
Setup
switches
on
the
underside
of
the
keyboard
unit
must
be
set
when
the
host
processor
is
installed.
1
234
1
234
Ig~F
X X X
xl
Ig~F
X X X X
Setup
Swi~ches
ON
OFF
Warning:
Setup
Switch
label
Do
not
set
switches
1,
2,
and 3
to
ON
position.
ON
OFF
0
0
0
0
•
•
•
•
•
•
•
•
•
•
0 0 0
0 0 0
0 0 •
• • 0
0 0 0
0 0 0
0 0 •
0 • •
• 0 0
• 0 0
• 0 •
• 0 •
• • 0
• • 0
~
a-OFF
Languages
0
US
English
• UK English
0 Canadian French
• Japanese Katakana
0 Austrian
IGerman
• Belgian
• Danish
0 French Azerty
0 Italian
• Norwegian
0 Portuguese
• Spanish
0 Spanish Speaking
• Swedish
Figure
1-3.
Setup
Switches
Part
Number
(Membrane)
1389100
1389124
1389106
1389126
1389102
1389104
1389108
1389110
1389112
1389114
1389116
1389118
1389120
1389122
1.5
OPERATOR
MESSAGES
(LINE
25)
Part
Number
(Capacitance)
1385082
1385503
1385492
1385504
1385490
1385491
1385493
1385494
1385495
1385496
1385497
1385498
1385499
1385500
For
descriptions
of
the
operator
information
area,
refer
to
the
host
processor
operator's
guide.
Chapter
1.
Introduction
1-5
1.6
OFFLINE
TESTS
At
the
entry
of
the
offline
tests,
the
alarm
sounds
once.
Several
seconds
later,
the
test
pattern
appears
(shown
in
Figure
1-4)
and
the
status
light
blinks.
At
the
entry
of
the
keyboard-to-display
operation.
the
cursor
is
rectangular
and
blinking.
When
a
key
is
pressed.
the
cursor
becomes
an
underline.
Field
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Divider Line
1
TEST
Field 0 All-character pattern
Field e 2
or
4-Color pattern
Field e 7-Color pattern
Field 0 Setup switches
Field e Flashing block cursor
Field e Keyed-in characters
are
entered in this line.
Figure
1-4.
Offline
Test
Pattern
Nate:
This
keyboard
unit
is
a
UK-English
keyboard.
Bit
7
is
off
and
bit
8
is
on;
all
jumpers
are
off.
1-6
IBM
3205
Color
Display
Console
, ,
({)
(,-"
0
()
;'
'-.
i
'"
7
. (
(
•
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(
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