Hitachi CM2073A User manual

MODEL CM2073A
(For Europe)
1
OPERATING GUIDE

GENERAL
The CM2073A is an ultra high resolution colour display designed for
CADKAMKAE engineering and workstation use.
CM2073A’ s key features are=
*Ultra-high resolution
- up to 1280 dots X 1024 lines
*Sharp focus by in-line high resolution CRT 20 inch (19V) with a
0.311~1 dot pitch matrix.
*Bright colour picture with low distortion due to the use of an
efficient high performance deflection yoke.
*Compact chassis and low power consumption with switching power
supply and self converging system.
*Ergonomically designed cabinet with tilt and swivel stand.
2

w Bescheinigung des Herstellers / Importeurs
Hiermit wird bescheinigt, da13 der / die / das Farbmonitor, Model1 CM2073A
(Gerat, Typ, Bezeichnung) in ubereinstimmung mit den Bestimmungen der
Amtsbl. 163/1984 Vfg. 1046/1984 der Deutschen Bundespost
(Amtsblattverfugung) funk - entstdrt ist.
Der Deutschen Bundespost wurde das Inverkehrbringen dieses
Gerites angezeigt und die Berechtigung zur uberprtifung der Serie auf
Einhaltung der Bestimmungen eingertiumt.
Hitachi Sales Europa GmbH
WPOWER SOURCE
This colour display is designed to operate on 220/240 volts 50 Hz,
AC. Insert the power cord plug into a 220/240 volts 50 Hz safety
grounded outlet.
DO NOT CONNECT THE DISPLAY TO OTHER THAN THE SPECIFIED VOLTAGE.
Never remove the back cover of the display as this can expose you
to very high voltage and other hazards. If the display does not
operate properly, unplug the display and call your dealer.
NOTE : 1. This colour display is equipped vith a three-vire type
plug. This plug will only fit into a grounding-type
power outlet. This is a safety feature, do not defeat
the safety purpose of the grounding-type plug.
2. If the power cord or plug is damaged or frayed, replace
it.
3. Do not overload wall outlets or extension cords as this
can result in fire or electric shock.
TO PREVENT SHOCK OR FIRE HAZARD,
DO NOT EXPOSE THIS DISPLAY TO
RAIN OR MOISTURE..
3

CAUTIONS ON USE
CAUTIONS ON THE SUPPLY VOL-
When the power voltage is
extremely high or low, it may
cause trouble or it may not give
optimum performance. Consult your
dealer at that time.
KEEP WATER OUT
When water of liquid enters the
set, it becomes dangerous to use
the unit. Immediately pull the
plug out and contact your dealer.
KEEP IN A WELL VENTILATED PLACE
Ventilation holes are provided in
the cabinet to prevent the
temperature from rising. Do not
place the unit in a place badly
ventilated or cover the unit with
materials such as clothes.
HIGH TEMPERATURE CAUSES TROUBLE
Avoid placing the unit in direct
sunshine, near a heating
appliance.

WHEN BEHAVIOUR IS ABNORMAL
When any abnormal sound, odour or
smoke is generated, push the
power switch off, pull the power
plug out from the socket and
contact your dealer.
CAUTIONS
TREATING THE SURFACE
Do not wipe the surface of the
set using volatile liquids such
as benzine or thinners, or any
chemically treated cloth; do not
apply insecticide. It may damage
the surface or cause peeling-off
of the paint. When a vinyl
product is kept in contact with
the surface for a long time,
stains may occur.
BE CAREFUL OF MAGNETISM
Do not bring materials which
generate magnetism, such as a
magnet, printers, floppy discs,
or transformers etc. nearby: the
set may be affected by magnetism,
causing colour disturbance or
picture distortion etc.
5

LOCATION OF CUSTOMER CONTROLS
[FRONT vmwl
BRIGHTNESS CONTROL
CONTRAST CONTROL
/
/
DEGAUSSING SWITCH
POWER SWITCH
“0" means power on.
“I" means power off.
\ POWER INDICATOR
(This illuminates
when power is on.)
Fig. 1
CONTRAST AND BRIGHTNESS CONTROLS
These may be adjusted by releasing the push in/out rotary controls.
DEGAUSSING SWITCH
This display is equipped with an automatic degaussing circuit (This
circuit operates when power is switched on). If the display is turned
horizontally and picture colour becomes un-uniform, push this switch
to get fine colour uniformity. Picture may become still after some ten
seconds.
6

[REAR VIEW]
R.G.B. SIGNAL INPUT
FUSE F901
I
SYNC SIGNAL INPUT
I
(Some displays
are not equipped
with this sync.
input and 75 OHM
terminator.)
AC CORD INLET 1
175 OHM TERMINATORS
Fig. 2
FUSE F901
Please always use 4A/25DV IEC type fuse, (contact service personnel).
SIGNAL CABLE CONNECTION
Connect R.G.B. signal BNC connectors to the signal input. When one
display is used, the 75 OHM terminator must be connected to yout" BNC
connector (see Fig.4 ). When two more displays are used at the same
time (loop through state) see Fig.6 for connecting cables.
7

[SIGNAL CABLE CONNECTION)
from signal
generator
75 OHM terminator
(must be connected)
Fig. 3 75 OHM terminator connection
(side view)
from signal generator
I
from signal generator
Fig. 4 cable connection
(rear view)
,,,,/ /$TK~-'-j to next display
Fig. 6 2 more displays case
(loop through state) signal cable
v
Fig. 5 terminator not connected
a

VIDEO INPUT SIGNAL TIMING CHART-
1. SEPARATE SYNC
L
**********in case of CM2073AME-S-315
t
R.G.B. signal (analogue)
1
*
(HORIZONTAL) (VERTICAL)
_ .---
(R.G.B.)I r;/;ELHy-
u
I i.S ’
p-20.47-
4
(unit: pS)
p813H-d (unit: H)
Fig. 7 Fig. 8
2. SYNC. ON GREEN**********in case of CM2073A-312/315
CM2073AME-S-315
Green Signal
/-f11.5c120.47pJ (unit: pS)
I
I
J-
(unit: H)
Fig. 9
9

INSTALLATION INSTRUCTIONS
FOR DEALERS
ADJUSTMENTSFORTHE CM2073A ONINSTALLATION
.
This document lists the ad.iustmcnt fcat,rlrrs of thr 20738 available to
the dealer. Other ad.justment.s exist which are not readily accessible ,'
and should not be attempted by untrained personnel.
1
The CM2073A comes in various configurations including displays for
line rates of nominal 50kHz and 60kHz operations, line synchronisation
on the green video drive9
separate line synchronisation, with or
without D.D.C. (Dig:ital Dynamic Convergence) and models with internal
timing to preferred video driving boards.
Before any of the adjustments below are attempted, please ensure that
the model has been chosen appropriately from the options listed on
page 16 of the operating guide.
The adjustments listed in this note permit some deviations from this
table, but it is important that the most appropriate model be chosen.
ADJUSTMENTS
Before attempting any of the following adjustments, the display should
be powered up for a period of 15 minutes prior to the ad-justment.
I
1. Switch on the power9 noting that. the green power indicator adjacent
.:.
to the power switch comes on, If it does not;
a> Check power source and connections
b) Check fuse
c) Call a service engineer
10

2. Advance the contrast and brightness controls fully clockwise.
*
..* 3. If no picture appears check the video drive and source connections
.+l
particularly green for sync on green models or composite sync if
there is a separate line. No picture will appear without the sync
signal.
4. When a display appears note the stability of the displayed image.
If it is not stable or it is displayed from centre, switch off the
mains supply and remove outer plastic case only by removing four
screws from the rear panel and two screws from the centre portion.
It may be convenient to remove and replace signal and power cables
at this stage, since they pass through the rear cover. See Fig.10.
BACK COVER
SCREW i
COVER
BOTTOM COVER
”
SC ii E L”J 1
Fig. 10
11

5. Power up and adjust (if necessary) the horizontal hold control with
plastic trimmer (Fig.ll). Note that it is important that a plastic
trimmer is used. Otherwise the adjustment could result in a short
,
circuit and breakdown of display. .
6. Adjust vertical hold control (if necessary) with plastic trimmer.
/.
7. Either of the two previous controls should stabilize the picture.
If not, call the service engineer.
8. With a stable picture, note the size and its position of the
picture. Any adjustment shoud be made in the following sequence.
Horizontal Centre 1
Horizontal Size
!
Vertical Centre
i
Figs 11 and 12.
Vertical Size
B CUTOFF G CUTOFF R.CUTOFF
E EKG \
G. EKG /R EKG /
41 \
I
u i
I
\
H SIZE H CENT
Q
H. PHASE II
Fig. 11
12
Fig. 12

9. With the previous adjustments complete YOU shoud now have a stable
picture correctly centred. Check the left and right hand edges of
the picture for clarity. If any corruption is present, it is
necessary to adjust the horizontal phase until both extremities are
clear. If adjustment is necessary, the horizontal centre and size
may need further adjustment.
10. Display a picture that contains vertical lines at both right hand
and left hands of the screen. If necessary, adjust the pin cushion
control to make the lines straight.
11. Display a picture that contains a multiplicity of horizontal lines
with constant spacing. If the lines are not displayed with equal
spacings adjust the vertical linearity. If this adjustment is
necessary, some readjustment of the vertical centre and size may be
required.
12. Display a picture that contains a large white area and check that
the displayed image is white. If it is not, an unqualified engineer
shoud not attempt to adjust the colour drives or background to
compensate. A qualified engineer must first determine that the
black level pedestal is correctly positioned before any such
adjustment is considered. This work involves further dismantlement
of the chassis.
13. If in doubt or experiencing difficulty with the adjustments
c
detailed, contact the supplier of the equipment.
5;
14. In all of the above adjustments, ensure that the viewable
displayed image does not exceed a displayed field of 380 mm X 270
mm.
Finally, power down and replace covers and centre case portion first.
Turn brightness and contrast controls to their normal operating
positions.
13

FREIE UND HANSESTADT
HAMBURG
ARBEITS - UND SOZlALBEHkDE
AMT FUR ARBEITSSCHUTZ
Gesch -Z AS 23!FBA Ro
(Bei Beantwortung bttte anqehen) Fernsprecher 29188 3135 (Durchwahl)
Pulassungsschein HH 22/86 Ro
Aufgrund 5 7 Abs. 2der Rentgenwerordnung worn 01. M&z 1973
(RGBl. I S. 173) wird der Firma
Hitachi Sales Europa GmbH., Rungedamm 2,205O Hamburg 80 die
Zulassung der Bauart fijr folgenden Stijrstrahler erteilt:
Art Farbmonitor
TOP
CM2073A
Hersteller Yokohama Works of Hitachi Ltd., Yokohama,
Japan
Bildrijhre Hitachi
M48JLK22X
Betriebsdaten Hochspannung 31
kV
Strahlstrom 0.6mA
Prlfungsschein Physikalisch-Technische Bundesanstalt Nr.
6.22-
S416 Vom 01.08.1986
Die Zulassung ist befristet bis zum 11.08.1996
Fiir den Strahlenschutz wesentliche Merkmale:
a) die Bauart der Bildr8hre,
b) die der Hochspannungserzeugung und -stabilisierung dienenden Bau-
gruppen des Chassis.
Auflagen
Gemi%
$j 8 Abs. 1 der R6V wird die Zulassung mit folgenden Auf-
lagen werbunden:
1, Die Gerate sind einer Stkkprtifung &raufhin zu unterziehen, ob sie
beztiglich der fiar den Strahlenschutz wesentlichen Me&male der
Bauartzulassung entsprechen. Die Prufung mufi umfassen :
a) Kontrolle der Hnchspannunq an ledem ernzelnen Garat
b) Dosisleistungsmersunq nach ntiherar .4nqabe der Zulassungshehorde.
Die Ergebnisse der Doslsleistungsm?ssung slnd, den Werstellnummern
der Gertite mugeordnet. aufzuzeichnen und der Zulassungsbehorde
regelm&ig einmusenden. Die Zeitraume hierfur werden gesondert
bestimmt.
14

Die Zulassungsbehorde ist berechtigt, einzelne Gerate nach eigener
Auswahl anzufordern, urn das Vorliegen der fur den Strahlenschutz
wesentlichen Merkmale zu uberprufen oder uberprufen zu lassen.
Die Gerate sind auf Verlangen im Originalzustand anzuliefern und
angemessene Zeit zur Verfugung zu stellen.
2. Die Herstellung und die Stuckprufung sind durch einen von der
Zulassungsbehorde bestimmten Sachverstandigen uberwachen zu lassen.
3. Die Gerate sind mit dem Kennzeichen.
HH 22/86 Ro
zu versehen sowie mit einem Hinweis folgenden Mindestinhalts :
“Die in diesem Gerat entstehende Rontgenstrahlung ist ausreichend
abgeschirmt. Beschleunigungsspannung maximal 31 kV.”
4. Jedem Erwerber eines Gerites ist ein Abdruck des Zulassungsscheines
auszuhindigen, auf dem das Ergebnis der Sttickprtifung (Auflage 1)
bestatigt sein mu&
Jedem Gerat ist ferner eine Betriebsanleitung beizufiigen, die den in
Auflage 3 genannten Hinweis enthilt.
Hinweis fur den Benutzer des Gera’tes
UnsachgemaBe Eingriffe, insbesondere Verandern der Hochspannung oder
Auswechseln der Bildrohre, konnen dazu fiihren, dab Rontgenstrahlung in
erheblicher Sterke auftritt. Ein so verindertes Gerat entspricht nicht
mehr dieser Zulassung und darf infolgedessen nicht betrieben werden.
Aufgrund der durchgeftihrten
Stiickprufung wird hiermit
bestatigt, da6 dieses Gerat
bezuglich der fur den Strahlen-
schutz wesentlichen Merkmale
der Bauartzulassung entspricht. (Dienstsiegel) WZ. Bohnenkamp
15

SPECIFICATIONS
COLOUR DISPLAY TUBE.........
20 inch(l9V) 90 degree, in-line gun
trio-dot pitch, 0.31mm with non-glare
panel
PHOSPHOR TYPE...............P22
POWER INPUT VOLTAGE.........230V range.....AC 200/220/230/240 volts
POWER CONSUMPTION...........150W
INPUT SIGNAL................
R.G.B. analog input(BNC terminals)
terminated by 75 ohm position.
In case of loop through state, terminated
at the high position.
Signal timing.....shown below
SYNC. SIGNAL................
O.QVp-p(negative) separate/sync on green
MAXIMUM RESOLUTTON..........1280 dots(H)X1024 lines(V)
MISCONVERGENCE..............0.3 mm max ; all over (with DDC)
0.3 mm max ; center ) (without DDc)
0.5 nun max ; corners
CONTROLS
.................. ..contrast. brightness,
degaussing SW
DIMENSIONS..................506(W)X415(H)X542(D) mm
WEIGHT ...................... 35 kg
(incl. tilt/swivel stand)
SIGNAL TIMINGS
rl I
SCANNING FREQUENCY
00
1 (VI
w! 48.8kHz 1 6OHz
CM2073A-301
I I
63.9kHz 60Hz
CM2073A-302 159.5ktIz / 70.4Hz
DISPLAY
AREA
360nxn(H)
X27Oimn(V)
340mm(H)
X27Omm(V)
345mm(H)
x27Omm(V)
Note: DDC means Digital Dynamic Convergence.
4602091
Printed in Japan YN-M(S)
DISPLAY RETRACE DDC
TIME TIME
H:16.02cts Hz4.4~~ 0
v:15.7ms
v:o,92ms -
H:ll.Sps H:307/~s
0
V:16.Oms V:0.64ms
Hz12.8~~ H:4.0@s 0
V:13.4ms v:o.77ms