5-41
10. Convergence Adjustment
Signal: No.33 (788*1200 @ 75Hz) Cross Hatch Pattern and frame pattern
Environment: Adjustment Magnetic Field by three dimension magnetic field system.
Turn the CRT face to east and degauss the monitor using external differential coil.
1) Receive Signal 33 (Cross Hatch Pattern and frame Pattern).
It confirms that screen amplitude and screen position are following value.
Screen amplitude
H: 396mm
±
1.0mm
V: 297mm
±
1.0mm
Screen position
H: l Xleft -Xright l
≤
1.0mm
V: l Xtop -Xbottom l
≤
1.0mm
Receive Signal 33 (Cross Hatch Pattern)
Adjust the H/V an interval of Cross Hatch Pattern to the following values, and Cross Hatch Pattern consist of
the 15 vertical line and the 11 horizontal line is displayed.
H interval : 54dot
V interval : 112line
The adjustment confirmation is open each convergence revision items of Menu(S),TAG B and TAG C and
push "PROCEED"SW.
2) Measure misconvergence, by using Fig.10-6 standard mentioned below.
a. Measure misconvergence at screen center.
If it is not satisfactory, adjust the static convergence of the green by using
the 6-pole magnets on the CPM assembly.
X: l "R-G"+"B-G" l < 0.10mm
Y: l "R-G"+"B-G" l < 0.10mm
Measure misconvergence at screen center once again.
If it is not satisfactory, adjust the static convergence of the blue and red by using the4-pole magnets on
the CPM assembly.
X: l "R-B" l < 0.20mm
Y: l "R-B" l < 0.20mm
b. Open Menu(S), TAG B "H.S.CONVER" , and adjusted so that misconvergence of the horizontal direction
may become the minimum in G of the Fig.10-7 and H and the l point.
Open Menu(S), TAG B "V.S.CONVER", and adjusted so that misconvergence of the vertical direction
may become the minimum.
But, the revision span of "H.S.CONVER" and "V.S.CONVER" is made 69-187.
H.S.CONVER
V.S.CONVER
R
B
R
B
B
R
B
R
Fig 10-1 The move of the R line and the B line when "H.S./V.S. CONVER" was moved in the + direction.