Commodore 1404 Service Manual
Commodore
Monitor 1404
Service Manual
10/88
Commodore
Your
new
Monochrome
is
a solid
state
14"
display for
use
with
a wide
range
of
personal
and
micro
computers.
The
features
are
as follows:
•
High
resolution
CRT for
sharp
& crisp
images.
•
14"
diagonal
screen
with
non-glare
dired
etched
surface.
•
TTL
separate
signal input
type.
•
Low
power
consumption
of
35
W.
WARNING:
To
prevent
fire
or
shock
hazard
do
not
expose
this
appliance
to rain
or
moisture.
POWER
SOURCE
PRECAUTIONS.
Never
remove
the
backcover
of
any
monitor.
This
will
expose
you to
very
high
voltage
and
other
hazards.
If
a par-
ticular
video
monitor
does
not
operate
properly,
remove
the
power
cord
from
the
wall
outlet
and
contact
your
dealer.
As
a safety
feature,
this
monitor
is
equipped
with
a
polarized,
alternating
current
line
plug.
(Grounded,
3 prong
plug.)
This
plug
will
fit
into the
outlet in
only
one
way.
If
you
are
unable
to insert
the
plug
fully
into the
outlet, or
if the
plug
simply
does not
fit,
contad
an
eledrician
to
replace
the
obsolete
outlet.
Do not
defeat
the
safety
purpose
of
this
polarized
plug.
GENERAL
SAFETY
PRECAUTIONS
•
Do not
place
anything
heavy,
wet,
or
magnetic
on the
monitor
or
on the
power
cable.
•
Be sure to
turn
the
monitor
off
before
plugging
into
the
socket.
Hold
the plug
when
disconnecting
it.
•
If
the
monitor
is
not to
be
used for
a
long
period
disconnect
the
power
cable from
the socket.
•
Make
sure
that
the
power
cable
and
connection
cords
are
surely
connected.
•
Install
the
monitor
on
a stable
and
horizontal
surface.
•
Avoid
operating
the
monitor
in extreme
heat,
humidity,
or where
it
may
be
affected
by
dust.
•
Never
cover the
ventilation
holes or
touch them
with
metalic
or
inflammable
materials.
•
Never drop,
or
otherwise
strongly
shock
the
monitor.
CONTROL
DESCRIPTION
333
BRIGHT
CONTRAST
FRONT CONTROL
POWER
SWITCH
POWER
INDICATOR
SUB-BRIGHT
V-LINE
-
V-HOLD
-
V-SIZE
POWER
CORD
VIDEO INPUT TERMINAL
REAR CONTROL
CONTRAST
This
increases
the
brightness
of
only block
& white
when
turned
clockwise,
and decreases
the
brightness
of
block
&
white
when
turned
counterclockwise.
BRIGHT
This
controls
the
brightness
of the
entire
screen.
POWER
SWITCH
Press the
T
position of
switch
to turn
the
power on.
Press
the
"O" position
of
switch
to turn the
power off.
Power
switch
does not exist
in
some
coses, because
it is
optional.
POWER
INDICATOR
This
indicator
lights
when
the
display is
on.
POWER
CORD
Plug this
power cord into
an
electrical
outlet.
V-HOLD
V-SIZE
V-LINE
This
control
is
used to obtain
stability
of the screen
picture.
Use this
knob
when the
screen
picture
does not
hold.
(Adjust
with
a screw
driver.)
Rotating
this control
counterclockwise
will
moke the
screen
longer
upwards
and
downwards.
(Adjust
with
a screw
driver.)
Rotating
this
control
counterclockwise
will
make
the
sym-
metrical size of
upwards and
downwards.
(Adjust
with
a screw driver.)
VIDEO INPUT
TERMINAL
A 9
Pin
D-subminiature connedor is
used as the input signal
connector
and
plugged into the computer.
Pin and input signals are shown
in the table
below.
PIN CONNECTION
PIN NO. CONNECTION
1
GND
2 GND
3
-
4
-
5
-
6
INTENSITY
7
VIDEO
8
HORIZONTAL
SYNC
9
VERTICAL
SYNC
9 PIN D-SUBMINIATURE CONNECTOR
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