Sony FD Trinitron WEGA Hi-Scan KD-34XS955, Service Manual

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KD-30XS955/34XBR960/34XS955/36XS955
KD-30XS955/34XBR960/34XS955/36XS955
SECTION 2: SET-UP ADJUSTMENTS
Blue Red
Green
5. Move the defl ection yoke forward, and adjust so that the entire screen
becomes green.
6. Switch over the raster signal to red and blue and confi rm the
condition.
7. When the position of the defl ection yoke is determined, tighten it with
the defl ection 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
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
infl uence of geomagnetism.
• CXA2170-D4 Confi rm Focus data - See 2.4.1 Dynamic Focus/
Dynamic Quadrapole Data Table 1.
• CXA8070 (Should be set to default) - or unplug CN1 from DY.
CXA8070 default (initial) data: YBWU =31, YBWL =31, RSAP =31,
RUBW =31, RUMB =31, RLBW =31, RLMB =31, LSAP =31, LUBW =31
LUMB =31, LLBW = 31, LLMB = 31, CADJ = 29, HVCA =31
• CXA2170-D1, -D2 table default (initial) data: VCEN =24, VPIN =24,
HTPZ =7, HCNT =31, PPHA =20, VANG =31, VBOW =31, LBOW =31,
LANG =31
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 defl ection 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 defl ection 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.
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
Figure 1
(Check Areas)