Terete Teeereneesesetenseetenenaees - Sony TRINITRON PVM-14N1A Service Manual

3-2. PREPARATIONS (2)
* When composite video signal are supplied, they must be sup-
plied as below.
a Signal Contents
100% WHITE 0.714V
75% WHITE 0.536V
BURST 286mV
(632mV)
Standard Level
P-W
358NT
443NT
(GREEN)
(This item only P-P)
100% WHITE
75% WHITE
PAL
SECAM PAL BURST
(GREEN)
(This item only P-P)
* In this document, terms inside boxes [__lare names of service
mode adjustments.
Example |H. SIZE
After making adjustments in service mode, save the adjustment
data before cutting off the power. If you cut off the power with-
Out saving, the results of your adjustments are all lost.
COMPOSITE
VIDEO
*
*
Standard inspection conditions
Unless specifically specified otherwise in this document. the
following conditions are used for adjustments and inspections.
VOLUME 50%
CONTRAST 60%
BRIGHTNESS STD
CHROMA STD
PHASE STD
ASPECT RATIO 4:3
3-3. WRITING MODEL DATA
1. In service mode, write in the following model data at No. 63
PVM- I4NIA PVM- I4N2A SSM- I4NIA
I4NIE 14N2E I4NIiE
I4NIMDE 14N2U 14N1U
'any: . |e" SONG el sONtA Poe 0
20N1A 20N2E 20N1E
20NIE 20N2U 20NIU
20N1U
3-4. PICTURE OUTPUT
1. Set the AC input voltage.
(1) Input the video and audio signals to the corresponding
terminals on the connector panel.
(2) Set the sliduck voltage as shown on the right.
PVM- 14NIU/14N2U/
20N1U/20N2U
SSM- 14N1U/20N1U
Voltage
AC120 + 3V
(Distortion rate: 3% or less)
PVM- 14N1A/14NIE/
14N1IMDE/
14N2A/14N2E/
20N1A/20N1E/
20N2A/20N2U
SSM- 14N1A/14N1E/
20N1A/20NIE
AC220 + 3V
(Distortion rate: 3% or less)
. LANDING ADJUSTMENT
1. Preparations
1) To reduce the influence of geomagnetism, face the set's CRT
screen east or west.
2) Loosen the deflection yoke fixture and lower the deflection
yoke to the rear.
3) Switch on the Power switch and degauss with the degausser.
4) Adjust the deflection yoke tilt.
5) Switch (S501) position is center.
2. Adjustment
1) CONTRAST ....... MIN
BRIGHTNESS.... Position providing good vision
2) The rough adjustments of the white balance, G2, and
convergence must be completed already.
3) Set green-only.
4) Adjust the purity knob so that the green comes to the center
of the screen. Make the red and blue about even. Fig. 1
5) Switch to blue only, red only, and green only and verify each.
Fig. 1, 2, and 3
6) Bring the deflection yoke gradually forward and adjust the
deflection yoke so that the R and B at both sides of the screen
become green. Fig.2—+3
7) If the deflection yoke comes too far forward, you will see the
pattern shown in Figure 4. If that happens, lower the
deflection yoke to the rear. Fig. 4—+3
8) Switch the single color switch to B and verify the single color.
Fig.6
9) Switch the single color switch to R and verify the single color.
Fig.9
When one of the colors does not become the single color cor-
rectly, check by repeating items 7 and 8 based on the single
color not coming into adjustment.
If you can not obtain landing in the corners, paste on mag-
nets.
11) Switch to an all-white signal and check the uniformity.
12) When the deflection yoke position is determined, fasten it
with the fixture.
10
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