Sony KD-30XS955 Service Manual ▷ View online
34
KD-30XS955/34XBR960/34XS955/36XS955
KD-30XS955/34XBR960/34XS955/36XS955
SECTION 2: SET-UP ADJUSTMENTS
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.
even on both sides.
Blue
Red
Green
5. Move the defl ection yoke forward, and adjust so that the entire screen
becomes green.
Figure 1
2-1. BEAM LANDING
Preparation:
• Use cross hatch signal to rough adjust focus, G2 and then input a
• 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.
• Remove all magnets, wedges, and permalogy strips.
• Confi rm data in service mode to match with CRT screen size.
• Set 2170D-1 to their default settings.
• VCEN 19
• VPIN 15
• HTPZ 15
• Set 2170D-2 to their default settings.
• PPHA 21
• VANG 31
• LANG 31
• VBOW
31
• LBOW 31
• Set 2170D-4 to their default settings.
• CXA8070 to their default settings.
• Set all user compensations to their default settings.
• Set landings to their default settings.
• LT Left Top LCC Control
127
• LB Left Bottom LCC Control
127
• RT Right Top LCC Control
127
• RB Right Bottom LCC Control 127
NOTE: Do not use the hand degausser; it magnetizes the CRT .
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
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KD-30XS955/34XBR960/34XS955/36XS955
KD-30XS955/34XBR960/34XS955/36XS955
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. Move the yoke up and down and/or side to side to fi nd the best
geometry. Once the best position is confi rmed mount the rubber
wedges to hold the yoke position in place for best geometry.
wedges to hold the yoke position in place for best geometry.
9. 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
magnets correct
these areas (a-d)
Deflection yoke positioning
corrects these areas
(Check Areas)
2-2. CONVERGENCE
Preparation:
• Set the CONTRAST and BRIGHTNESS control to standard (reset).
• Set the CONTRAST and BRIGHTNESS control to standard (reset).
• Input a cross hatch pattern signal.
2-2.1. VERTICAL AND HORIZONTAL STATIC
CONVERGENCE
1. Set dynamic convergence to default values (as in 2-1. Beam Landing)
or disconnect the dynamic convergence before adjusting static
convergence (CN903), except for minor touch-up.
convergence (CN903), except for minor touch-up.
2. Adjust H.STAT convergence, RV9001, on CX Board to converge red,
green, and blue dots in the center of the screen.
3. Adjust V. STAT magnet to converge red, green and blue dots in the
center of the screen.
R
G
B
Center dot
RV9001
H-STAT
V.STAT magnet
R G B
4. Tilt the V.STAT magnet and adjust static convergence to open or
close the V.STAT magnet.
B
G
R
R
B
G
R
R
1
2-3. V-PIN AND V-CEN ADJUSTMENT
Preparation:
• Input a cross hatch pattern signal.
• Input a cross hatch pattern signal.
• Set Video Mode to: Standard (Reset)
• For all 4X3 CRT, VPIN data has separate register for full and
V-compress. Adjust both modes if needed.
• For all 16X9 CRT, adjust VPIN data in normal mode for straightness
of horizontal line.
1. Adjust service mode CXA2170D-1 05 V-CEN so that the top pin and
bottom pin are symmetrical from top to bottom.
2. Adjust service mode CXA2170D-1 06 V-PIN so that the top pin and
bottom pin are symmetrical from top to bottom.
3. Horizontal lines should be straight from left to right. Check landing for
side effect.
2-3.1. OPERATION OF BMC (HEXAPOLE)
MAGNET
The respective dot positions result from moving each magnet interact.
Perform the following adjustments while tracking.
Perform the following adjustments while tracking.
1. Use the BMC tabs to adjust the red, green and blue dots so that
they line up at the center of the screen (move the dots in a horizontal
direction).
direction).
HMC Correction
HMC Correction
R
G
B
A=B
A
B
R
G B
A>B
A
B
R
G
B
A=B
A
B
R
G
B
A<B
A
B
VMC Correction
R
G
B
C<D
C
D
R
G
B
C=D
VMC Correction
R
G
B
C<D
C
D
R
G
B
C=D
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KD-30XS955/34XBR960/34XS955/36XS955
KD-30XS955/34XBR960/34XS955/36XS955
2-3.2. TLH PLATE ADJUSTMENT
Preparation:
• Input a cross hatch pattern signal.
• Input a cross hatch pattern signal.
• Adjust unbalanced horizontal convergence of red and blue dots by
adjusting the TLH Plate on the defl ection yoke.
TLH Plate
RV9001
WY Board
CX Board
TLV
XCV
TLH+
TLH-
R B
(B)(R)
B R
(R)(B)
1. Adjust XCV core to balance X axis.
2. Adjust the vertical red and blue convergence with V.TILT (TLV VR).
Note: Perform adjustments while tracking Item 1.
Note: When static convergence adjustments are complete, restore
dynamic convergence.
dynamic convergence.
2-3.3. SCREEN-CORNER CONVERGENCE
Preparation:
• Input a cross hatch pattern signal.
• Input a cross hatch pattern signal.
1. Affi x a permalloy assembly corresponding to the misconverged areas.
d
c
a
b
a-d: screen-corner
misconvergence
a
b
c
d
2-3.4. DYNAMIC CONVERGENCE
ADJUSTMENTS
• Set dynamic convergence using the following service registers. Note
areas of change.
• Only H-component can be corrected, for vertical component use
permalloy to compensate.
0. YBWU (Upper Y-BOW)
B R
B R
1. YBWL (Lower Y BOW)
B R
B R
2. RSAP (Right H AMP)
R B
3. RUBW (Right Upper BOW)
B R
4. RUMB (Right Upper Middle BOW)
B R
5. RLBW (Right Lower BOW)
R B
6. RLMB (Right Lower Middle BOW)
B R
7. LSAP (Left H AMP)
B R
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KD-30XS955/34XBR960/34XS955/36XS955
KD-30XS955/34XBR960/34XS955/36XS955
8. LUBW (Left Upper BOW)
B R
9. LUMB (Left Upper Middle BOW)
B R
10. LLBW (Left Lower BOW)
B R
11. LLMB (Left Lower Middle BOW)
B R
12. CADJ Fix 29
2-4. FOCUS
ADJUSTMENT
Confi rm neck assembly Z axis position. (See Figure 1)
1. Input a dot signal.
2. Set Video Mode to STANDARD.
3. Adjust focus VR counter clockwise (Over Focus) to confi rm the dot’s
shape. Center should be very slightly oval with left and right sides
balanced.
balanced.
4. Input a HD monoscope signal.
5. Confi rm center focus with focus VR.
KD-34XBR960/34XS955/36XS955
CRT:
36RDE/38RFN (Super-fi ne pitch and square fannel)
Neck Assy:NA328 (VA-type, square pin assignment, VPIN harness)
G3
G2
Neck-Assy: NA328
G1
G1 Cup Holder
Center Tolerance: + /- 0. 5mm
KD-30XS955
CRT:
32RDE (Super-Fine Pitch and square fannel)
Neck Assy:NA2920 (VA-Type, Square pin assignment, VPIN harness)
Neck-Assy: NA2920
G3
G2
Edge of G2 part
Center Step
G1
Position tolerance: +/- 0.5mm
Figure 1
Focus
Screen (G2)
HVD
Over Focus
DQP Dot Pattern
Upper Corner
Lower Corner
Center Horizontal Line
Center Dot Slightly Oval
NOTE: Changing neck assembly position will affect corner convergence.
2-4.1. DYNAMIC FOCUS/DYNAMIC QUADRA-
POLE DATA
Normally, no adjustments are necessary for these systems. If for some
reason the data is lost, use the data from Table 1 below:
reason the data is lost, use the data from Table 1 below:
1. Write the data from any non-vertically compressed mode, then use
the CPY1 function (CXA2170D-4 Item 6) to copy the data to the
vertical compressed modes.
vertical compressed modes.
Note: V-compressed data is identical to non-v-compressed data.
Service personnel with a trained eye can adjust the DF or DQP
registers to adjust DF phase (Item 7) or DQP phase (Item 8),
respectively, to balance left and right focus. Refrain from adjusting
more than 5 steps from table data below. Further adjustment
indicates a circuit problem -- troubleshoot to cause.
Service personnel with a trained eye can adjust the DF or DQP
registers to adjust DF phase (Item 7) or DQP phase (Item 8),
respectively, to balance left and right focus. Refrain from adjusting
more than 5 steps from table data below. Further adjustment
indicates a circuit problem -- troubleshoot to cause.
CAUTION: Be sure that Neck Assembly is in the proper location.
Mark position before moving or replacing neck assembly.
Mark position before moving or replacing neck assembly.
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