Circuit Adjustments; Preparations; Deflection System Adjustment; Vertical Deflection Section Adjustment - Sony TRINITRON PVM-14N5A Service Manual

5-1. PREPARATIONS

Input signals within ± 2 % of the following specifications.
Signal
Signal
Contents
100 % WHITE
NTSC
3.58 75 % WHITE
NTSC
BURST
COMPOSITE 4.43
(GREEN)
VIDEO
(75 % COLOR
100 % WHITE
BAR)
PAL 75 % WHITE
SECAM
PAL BURST
(GREEN)

5-2. DEFLECTION SYSTEM ADJUSTMENT

5-2-1. Vertical Deflection Section Adjustment

Note: The 16 : 9 mode is available only for the PVM-
14N6U and PVM-20N6U.
525 Monoscope
11.75 ± 0.2 frames 12.8 ± 0.3 frames
4 : 3
14-inch 157 mm
16 : 9
20-inch 221 mm
Vertical Size Specifications
1. Input the 525 Monoscope signal.
2. Set CONTRAST to 80 %.
Set BRIGHTNESS to standard (STD).
3. Set the service mode.
4. Adjust the vertical size to the specified value using
89 [V|SIZE].
Optimize the vertical linearity using 92
[V|LINEARITY] and 91 [VS-CORRECTION].
Adjust the vertical centering using 88 [V|CENTER].
(Refer to Note 1.)
5. Check that the vertical size is within the specification.
6. Set the 16 : 9 mode.
7. Check that the vertical size is within the 16 : 9 mode
specification. (Refer to Note 2.)
8. Return to the 4 : 3 mode.
9. Input the 625 special color bar signal.
10. Check that the vertical size is within the specification.
11. Set the 16 : 9 mode.
12. Check that the vertical size is within the 16 : 9 mode
specification.
Note 1: Set 89 [V|SIZE] [V|SIZE] [V|SIZE] [V|SIZE] within the "10 to 63" range. [V|SIZE]
Always set 93 [V|LIN|UPPER] [V|LIN|UPPER] and 94 [V|LIN|UPPER] [V|LIN|UPPER] [V|LIN|UPPER]
[V|LIN|LOWER] [V|LIN|LOWER]
[V|LIN|LOWER] to "0." [V|LIN|LOWER] [V|LIN|LOWER]
Note 2: Measure the vertical size of the 16 : 9 mode
with no flag signal in the vicinity of the image.
II
S A Chassis
SECTION 5

CIRCUIT ADJUSTMENTS

5-2-2. Horizontal Deflection Section Adjustment

Note 1: Make sure that the "3-4. Raster Centering
Standard
Level P-W
Note 2: The 16 : 9 mode is available only for the PVM-
0.714 V
0.536 V
1. Input the 525 Monoscope signal.
286 mV p-p
2. Set CONTRAST to 80 %.
(632 mV p-p)
Set BRIGHTNESS to standard (STD).
0.7 V
3. Set the service mode.
0.525 V
4. Adjust roughly the horizontal size to 16 frames using
95 [H|SIZE].
300 mV p-p
(664 mV p-p)
5. Adjust the horizontal deflection section using 97
[H|PIN|AMP], 96 [H|PIN|PHASE], 98
[H|CORNER|PIN], 86 [BOW], 87 [ANGLE], and
95 [H|SIZE].
While correcting the distortion, adjust so that the
horizontal and vertical of the screen become
perpendicular.
6. Set the 16 : 9 mode.
625 Special CB
7. Check that the screen distortion is normal.
8. Input the 625 special color bar signal.
157 mm
9. Check that the screen distortion is normal for both 4 : 3
and 16 : 9.
221 mm
4 : 3
16 : 9
Adjustment" has been completed before
performing this adjustment.
14N6U and PVM-20N6U.
525 Monoscope
15.75 ± 0.2 frames 16.8 ±0.3 frames
15.75 ± 0.2 frames 16.8 ±0.3 frames
Horizontal Size Specification
BOW (No. 86)
ANGLE (No. 87)
H PIN PHASE (No. 96)
H PIN AMP (No. 97)
H COR PIN (No. 98)
625 Special CB
5-1