Sony Trinitron PVM-14N5U - Circuit Adjustments; Preparations; Deflection System Adjustment; Vertical Deflection Section Adjustment

5-1
SIIA Chassis
SECTION 5
CIRCUIT ADJUSTMENTS
5-1. PREPARATIONS
Input signals within ±2 % of the following specifications.
Signal
Signal Standard
Contents Level P-W
NTSC
100 % WHITE 0.714 V
3.58 75 % WHITE 0.536 V
COMPOSITE
NTSC
BURST 286 mV p-p
VIDEO
4.43
(GREEN) (632 mV p-p)
(75 % COLOR
100 % WHITE 0.7 V
BAR)
PAL 75 % WHITE 0.525 V
SECAM
PAL BURST 300 mV p-p
(GREEN) (664 mV p-p)
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 625 Special CB
4 : 3 11.75 ±0.2 frames 12.8 ±0.3 frames
16 : 9
14-inch 157 mm 157 mm
20-inch 221 mm 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]
[V|SIZE] within the “10 to 63” range.
Always set 93
[V|LIN|UPPER][V|LIN|UPPER]
[V|LIN|UPPER][V|LIN|UPPER]
[V|LIN|UPPER] and 94
[V|LIN|LOWER][V|LIN|LOWER]
[V|LIN|LOWER][V|LIN|LOWER]
[V|LIN|LOWER] to “0.”
Note 2: Measure the vertical size of the 16 : 9 mode
with no flag signal in the vicinity of the image.
5-2-2. Horizontal Deflection Section Adjustment
Note 1: Make sure that the “3-4. Raster Centering
Adjustment” has been completed before
performing this adjustment.
Note 2: The 16 : 9 mode is available only for the PVM-
14N6U and PVM-20N6U.
1. Input the 525 Monoscope signal.
2. Set CONTRAST to 80 %.
Set BRIGHTNESS to standard (STD).
3. Set the service mode.
4. Adjust roughly the horizontal size to 16 frames using
95 [H|SIZE].
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.
7. Check that the screen distortion is normal.
8. Input the 625 special color bar signal.
9. Check that the screen distortion is normal for both 4 : 3
and 16 : 9.
525 Monoscope 625 Special CB
4 : 3 15.75 ±0.2 frames 16.8 ±0.3 frames
16 : 9 15.75 ±0.2 frames 16.8 ±0.3 frames
Horizontal Size Specification
H PIN AMP (No. 97)
BOW (No. 86)
H PIN PHASE (No. 96)
H COR PIN (No. 98)
ANGLE (No. 87)