• Correcting Magnet of Geometrie Distortion (4i
Adjust each "Distortion Correcting Magnet" until the active
character area is adjusted to the proper shape as shown in
Fig. 11.
1 ncorrect character area
0-,-..i-1--------·®
--
0
\
\
'(
' '
I
i_
I
----
/
_____ _
--
I
------
I
',
1
I
,1
J
\
----
1
Correct character area {Deflection yoke)
Oeflection Correcting mag
Fig. 11
• Adjustment of CRT angle
CRT angle has been adjusted at 0
°
prior to shipment, but it
can be changed at need as shown in the figure below.
Fig. 12
--PREASSEMBLY INSPECTION
AND HANDLING INSTRUCTIONS--
Caution:
Be sure al! handling of the CRT Display is done by the CRT
mounting brackets. At no time should the wires be used as
a means of moving or carrying a given CRT Display. The
CRT neck is the most fragile part of the CRT Display
Module and extreme care should be taken not to bump,
tap, or otherwise excess force on this neck.
Before applying power to the CRT Display an inspection
should be preformed to insure that any foreign material has
not been dropped in any part of the CRT Display.
1. lnsure that the proper signal and power connections are
made in accordance.
2. Apply power to monitor under test and allow monitur
to stabilize for a minimum of 5 minutes.
Note: All adjustments have made at the factory. This
procedure is to insure that these adjustmentshave
been made correctly.
3. Turn External Brightness Control to maximum and
raster should be slightly visible.
4. Check monitor for proper centering.
5. Check monitor for the specified active character area per
Page 3, 4 of this Manual.
6. Check for Geometrie Distortion.
7. Check focus.
8. Check Power Supply Voltages in accordance per Page 2
of this Manual.
CAUTION FOR SERVICING -----
Be su re to provide power supply sequence of more than
100mS.
Power ON-OFF
Do not turn OFF- power supply when the CRT heater is
not sufficiently heated. Otherwise, C RT may be burned
in spot.
In case of servicing or replacing CRT, high voltage some
times remains in the anode of CRT. So, comp.letely dis
charge high voltage before servicing or replacing CRT so as
to prevent a shock to the serviceman.
In this case, discharge to the external conductive coating
(aquadag) of CRT.
Discharging to other places will cause troubles. The 1eat
sink of horizontal output transistor is applied with +B. So,
do not earth it in case of servicing.
Use care to handle IC42.
Special care should be taken not to apply overvoltaie or
static electricity to IC42, as it is of C-MOS.
In cas@ of storaging or transporting it, be sure to take1ome
countermeasures for static ele�tricity. When using a s0\der
ing iron, be sure to connect it to the earth.
The unused terminal should be soldered withou; fail
-16 -
