IBM 6551-T3N Service Manual page 23

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.
IBM AT Computer
as a Jig
• Convergence Rough Adjustment
(1) Receive an image of the white crosshatch signals (white
lines on black).
(2) Make rough adjustment of the H and V direction conver-
gence by using 4-fold poles magnet.
(3) Make rough adjustment of the HMC and VMC by using 6-
fold poles magnet.
<"0" position of each magnet and TLH plate>
a) Align the protrusion marked with an arrow.
[4-fold poles magnet]
[2-fold poles
magnet on the DY]
[6-fold poles magnet] [2-fold poles magnet
on neck assy]
b) Flush the shaded portions of TLH plate with the DY rear
cover, as shown below.
[Rear view]
[Movements of TLH plate]
[Movements of XCV volume]
1 1-690-391-21 2 A-1500-819-A
Interface Unit
D-sub mini Din
(9 Pin [female]) (8Pin)
*The parts above ( 1 3 ) are necessary for DAS adjustment.
TLV
TLH
plate
XCV
TLH plate
DY rear cover
2-fold poles magnet
4-fold poles magnet
6-fold poles magnet
or
or
3 3-702-691-01
Connector Attachment
To BUS CONNECTOR
4 Pin 4 Pin 4 Pin
• Convergence Specification
V
• White Balance Adjustment Specification
1. 9300 K
x = 0.283 ± 0.005
y = 0.298 ± 0.005
(All White)
2. 5000 K
x = 0.346 ± 0.005
y = 0.359 ± 0.005
(All White)
3. sRGB
x = 0.313 ± 0.005
y = 0.329 ± 0.005
(All White)
• Vertical and Horizontal Position and Size
Specification
A
b
b
a a
a 2.0 mm
b 2.0 mm
• Focus adjustment
Adjust the focus volume 1 and 2 for the optimum focus.
FBT ASSY
4-2
6551-T3N/6551-U3N
B
MODE All mode
A
0.20 mm
A
0.24 mm
B
1 ~ 6, 9, 10 7, 8
MODE
MODE MODE
B
A 352 mm 330 mm
B 264 mm 264 mm
FOCUS 1
FOCUS 2