14AP1-W 14AP1-S
PURITY ADJUSTMENTCONVERGENCE ADJUSTMENT
NO. Adjustment partAdjusting procedure and conditionsWaveform and othersNO. Adjustment partAdjusting procedure and conditionsWaveform and others
1PURITY ADJ.1. Receive the GREEN-ONLY signal. Adjust the1CONVERGENCE1. Receive the Crosshatch Pattern signal.(S)
BGR(S)
beam current to about 500 ?A.ADJ.2. Using the remote controller, call NORMAL
2. Degauss the CRT, maintain the purity magnet(To be donemode.
B
at the zero magnetic field and keep the staticabafter the purityG
convergence roughly adjusted.adjustment.) Static ConvergenceR
3. Observe the points a and b as shown in Fig.1. Turn the 4-pole magnet to a proper opening
4-1 through the microscope. Adjust the landingangle in order to superpose the blue and red
Fig. 5-1
to the rank A requirement.colours.
4. Orient the raster rotation to 0 eastward.2. Turn the 6-pole magnet to a proper openingRGB
Fig. 4-1
5. Tighten up the deflection coil screws.angle in order to superpose the green colour
? Tightening torque: 108 ? 20 N (11 ? 2 kgf)over the blue and red colours.R
6. Make sure the CRT corners landing meet theG
B
A rank requirements. If not, stick the magnetDynamic Convergence
sheet to correct it.A1. Adjust the convergence on the fringes of the
Note: This adjustment must be done afterscreen in the following steps.Fig. 5-2
warming up the unit for 30 minutesa) Fig. 5-1: Drive the wedge at point "a" and
RGB
or longer with a beam current overBswing the deflection coil upward.B
500 ?A.b) Fig. 5-2: Drive the wedge at points "b"G
R
Note: Purity and Convergence adjustmentsand "c" and swing the deflection coil
A = B
must be done in below Magnetic Fielddownward.
condition.c) Fig. 5-3: Drive the "c" wedge deeper and
swing the deflection coil rightward.Fig. 5-3
MODELMAGNETIC FIELD (V, H) nTFig. 4-2
d) Fig. 5-4: Drive the "b" wedge deeper and
Rank "A" BGR
14AP1-W(S)20,00040,000
(on the right of the CRT)swing the deflection coil leftward.R
14AP-1S(S)-10,00040,0002. Fix all the wedges on the CRT and apply glassG
tape over them.B
3. Apply lacquer to the deflection yoke lock screw,
* For the following colours press R/C RGB keymagnet unit (purity, 4-pole, 6-pole magnets)
to change.Aand magnet unit lock screw.
Fig. 5-4
8
Finally received the Red-only and Blue-only
BWedge "a"signals to make sure there is no other colours
Red-onlyGreen-onlyBlue-only
on the screen.
A = BAboutAbout
100°100°
Signal-colour
screen clearedLacquer
Fig. 4-3
Rank "A"
(on the left of the CRT)WedgeWedge
"b""c"
* Press R/C RGB key for 1 secondFig. 5-5
in NORMAL MODE, the colour
will change to RGB mono colour4-pole magnet
mode.6-pole magnet
CRT neck
Lacquer
40mm
Purity magnet
Fig. 5-6
8-18-2 |
ACEC
