IBM 655743N - P 92 - 19" CRT Display - Convergence Rough Adjustment; White Balance Adjustment Specification; Vertical and Horizontal Position and Size Specification; Focus Adjustment

6557-03N/03S/43N/43S
Connect the communication cable of the computer to the connector located on the D board on the monitor. Run the service software
and then follow the instruction.
• Convergence Rough Adjustment
(1) Receive an image of the white crosshatch signals (white
lines on black).
(2) Place the protrusions of the 6-fold poles magnet attached to
the CRT neck upon each other. (Fig. 1)
(3) Make rough adjustment of the H and V direction conver-
gence by using 4-fold poles magnet.
• White Balance Adjustment Specification
(1) COLOR INDEX = 3
x = 0.283 ± 0.02
y = 0.298 ± 0.02
(All White)
(2) COLOR INDEX = 2
x = 0.313 ± 0.02
y = 0.329 ± 0.02
(All White)
(3) COLOR INDEX = 1
x = 0.346 ± 0.02
y = 0.359 ± 0.02
(All White)
• Vertical and Horizontal Position and Size
Specification
• Focus adjustment
Adjust the focus volume 1 and 2 for the optimum focus.
• Convergence Specification
4-2
IBM AT Computer
as a Jig
1-690-391-21
1
A-1500-819-A
Interface Unit
2
*The parts above ( ) are necessary for DAS adjustment.
1
3
D-sub
(9 Pin [female])
mini Din
(8Pin)
4 Pin
3-702-691-01
Connector Attachment
3
To BUS CONNECTOR
4 Pin 4 Pin
Protrusions
60°
Fig. 1
Fig. 3
XCV
YBH
XBV
APH
TLH
TLV
YCH
Purity
* Set so that the protruding parts
of the 2 magnet rings agree
with each other.
FOCUS 1
FOCUS 2
B
a
a 2.6 mm
b 2.6 mm
a
b
b
A
MODE
A
B
Other
352 mm
264 mm
6, 8
330 mm
264 mm
B
A
Phospher edge
V
H
MODE
fH
>
60 kHz
fH
<
60 kHz
Zone
A Zone
B Zone
C Zone
A Zone
B Zone
C Zone
N. Hemisphere
<
0.3 mm
<
0.3 mm
<
0.4 mm
<
0.3 mm
<
0.4 mm
<
0.45 mm
S. Hemisphere
<
0.3 mm
<
0.4 mm
<
0.45 mm
<
0.35 mm
<
0.45 mm
<
0.5 mm
C
XBV XCV
R
B
B
RRB B
R BBR
H. AMP
H. TILT (TLH)
R
B
B
R
V. TILT (TLV)
YBH
YCH
R B
R B
R