Sony Trinitron GDM-FW900 Service Manual page 24

GDM-FW900
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
• 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.
H-TRP
YCH
TLV
XBV
XCV APH
* 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
V
C
1 1-690-391-21
Cord,Connection
as a Jig Box Unit
D-sub mini Din
(9 pin [female]) (8 pin)
*The parts above (1 and 2) are necessary for DAS adjustment.
YBH
Purity
TLH
TLH
R
B
R B
YBH
R B
R
B
70kHz
fH
0.24 mm
A
A
0.24 mm
B
0.28 mm
C
2 A-1500-819-A
4 pin
Interface Unit
To BUS CONNECTOR
Connector
Attachment
• White Balance Adjustment Specification
1. 9300K
x = 0.283 ± 0.015
y = 0.298 ± 0.015
(All White)
2. 6500K
x = 0.313 ± 0.015
y = 0.329 ± 0.015
(All White)
3. 5000K
x = 0.346 ± 0.015
y = 0.359 ± 0.015
(All White)
4-pole magnet
• Vertical and Horizontal Position and Size
6-pole magnet
Specification
2-pole magnet
A
b
b
a
• Focus adjustment
Adjust the focus volume 1 and 2 for the optimum focus.
B R
B
70kHz >
0.24 mm
0.28 mm
0.32 mm
4-2
MODE 4 : 3
A 395
B 296
B
16 : 9
MODE
a
A 474
a 3.5 mm
B 474
b 3.5 mm
FBT
5 : 4
370
296
16 : 10
266
296
Focus 1
Focus 2