Sony FD Trinitron WEGA KV-32HS510, Service Manual

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KV-32HS510/34DRC510/34HS510/36HS510/38DRC510
SECTION 2: SET-UP ADJUSTMENTS
2-1. BEAM LANDING
Preparation:
• Use cross hatch signal to rough adjust focus, G2 and then input a
white pattern signal.
• Face the picture tube in an East or West direction to reduce the
influence of geomagnetism.
• Confirm data in service mode to match with CRT screen size.
• CXA2170D-4
• CXA8070 (Should be set to default)
• VCEN, VPIN, HTPZ, PPHA, VANG, LANG, VBOW, LBOW
(Should be set to default value).
NOTE: Do not use the hand degausser; it magnetizes the CRT .
1. Input white pattern from pattern generator. Set the PICTURE control
to maximum, and the BRIGHTNESS control to standard.
2. Loosen the deflection yoke mounting screw, and set the purity
control to the center as shown below:
Purity Control
3. Input a green pattern from the pattern generator.
4. Move the deflection yoke backwards, (See Figure 1) and adjust with
the purity control so that green is in the center and red and blue are
even on both sides.
Blue Red
Green
5. Move the deflection yoke forward, and adjust so that the entire screen
becomes green.
Figure 1
6. Switch over the raster signal to red and blue and confirm the
condition.
7. When the position of the deflection yoke is determined, tighten it with
the deflection yoke mounting screw.
8. If landing at the corner is not right, adjust it by using the disk
magnets.
a
c
b
d
b a
c d
Purity control
corrects this area
Disk magnets
or rotatable disk
magnets correct
these areas (a-d)
Deflection yoke positioning
corrects these areas
The following adjustments should be made when a complete
realignment is required or a new picture tube is installed.
These adjustments should be performed with rated power supply
voltage unless otherwise noted.
The controls and switch should be set as follows unless otherwise
noted:
VIDEO MODE: STANDARD (RESET)
Perform the adjustments in order as follows:
1. Beam Landing
2. Convergence
3. Focus
4. Screen (G2)
5. White Balance
Test Equipment Required:
1. Color Bar Pattern Generator
2. Degausser
3. DC Power Supply
4. Digital Multimeter