Iiyama Vision Master 405, Руководство по обслуживанию

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White (S side)
2.3±0.2
7±0.4
7.6±0.4
(in mm)
S N
*Magnet (890Z008A01)
1-22-1. PURITY correction
Receive an entire red raster signal.
Adjust the vertical and horizontal picture size to full-scan.
Face the CRT screen to north and south respectively and degauss
the entire screen with degausser.
Confirm that no color clash is visible.
If any partial color clash, correct the purity with the *magnet
(890Z008A01).
Note: Stick the magnet to the CRT with DF-TAPE (890P329A10).
Perform degauss again.
Repeat 4) to 6) until the purity is optimum.
Fix the magnet with ACETATE-TAPE (890P306A10).
Note: The magnet should be fixed away from the DY not to change
distortion or convergence.
1)
2)
3)
4)
5)
6)
7)
8)
Before ITC adjustments:
Receive an entire white raster signal and turn ON the Power Switch. Perform adjustment after a warm-up of at least
an hour.
<CRT screen>
<Back view of CRT>
DY
Anode cap
*Magnet
Color clash
DF-TAPE (890P329A10)
- 10 -
1-22. ITC (Integrated Tube Component) adjustments
The following ITC adjustments should be made only when a new picture tube is installed *
1
, or convergence is poor.
All set-up adjustments above-mentioned must be completed before any further ITC adjustment is attempted.
Perform the following adjustments by setting H-convergence and Tilt-dy to center indication.
Notes: *1. Use the CRT (251Z063-03) for replacement of the CRT (251Z063-04).
*2. See Chapter 5 concerning parts list for the ITC adjustments.
*3. PURITY MAGNET should not be turned during the ITC adjustments.
n
ê
CRT face
PURITY MAGNET*3
4-POLE MAGNET
6-POLE MAGNET
BOW MAGNET
DEFLECTION
YOKE
SEPARATOR
DIFFERENTIAL
COIL
X
V
LOCKING RING
+
+
X
V
Y
h(a)
Y
V(a)
+
Y
h(t)
PURITY MAGNET*3
4-POLE MAGNET
6-POLE MAGNET
BOW MAGNET
DEFLECTION
YOKE
SEPARATOR
DIFFERENTIAL
COIL
+
X
V
Y
HC
Y
HB
X
V
+
+
Y
V
LOCKING RING
ê
CRT face
< A705MT / i70A >
< S705MT >