IBM 6552-23N Service Manual page 24

Connect the communication cable of the computer to the connector located on the D board. Run the service software and then follow
the instruction.
IBM AT Computer
as a Jig
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.
(3) Make rough adjustment of the H and V direction conver-
gence by using 4-fold poles magnet.
YCH
H-TRP YBH
TLH
APH
XBV
XCV
* Set so that the protruding parts of
the 2 magnet rings agree with
each other.
XCV XBV
B
R
TLV YCH
R
B
B
R
Convergence Specification
A
V
1 1-690-391-21 2
D-sub mini Din
(9 Pin [female]) (8Pin)
*The parts above ( 1
Purity
4-pole magnet
6-pole magnet
2-pole magnet
TLH
R
B
R B B
YBH
R B R
B
fH 60kHz
0.20 mm
A
0.24 mm
B
A-1500-819-A 3 3-702-691-01
Interface Unit Connector Attachment
To BUS CONNECTOR
4 Pin 4 Pin 4 Pin
3 ) are necessary for DAS adjustment.
White Balance Adjustment Specification
1. 9300K
x=0.283
y=0.298
(All White)
2. 6500K
x=0.313
y=0.329
(All White)
3. 5000K
x=0.346
y=0.359
(All White)
Vertical and Horizontal Position and Size
Specification
A
b
b
a
Focus adjustment
Adjust the focus volume 1 and 2 for the optimum focus.
R
B
60kHz>
0.24 mm
0.28 mm
0.005
0.005
0.005
0.005
0.005
0.005
MODE 4 : 3
B
A 388
a
B 291
a 2.0 mm
b 2.0 mm
FBT
5 : 4
364
291
Focus 1
Focus 2