Sony Trinitron PVM-14N1E - Troubleshooting Common Issues; Noise on Screen During Color System Change; Inaccurate Color Reproduction

3-2. PREPARATIONS (2)
* When composite video signal are supplied, they must be sup-
plied as below.
100% WHITE 0.714V
75%
WHITE.
0.536V
BURST 286mV
(632mV)
(GREEN)
715% WHITE 0.525V
PAL
SECAM
358NT
443NT
COMPOSITE
VIDEO
(This item only P-P)
PAL BURST
(GREEN)
(This item only P-P)
300mV
(664mV)
* In this document, terms inside boxes Clare names of service
mode adjustments.
Example |H. SIZE
* 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
[MODEL].
PVM- 14N1A PVM- 14N2A SSM- 14NI1E
14NIE 14N2E 14N1U 0
14N1IMDE 14N2U 20N1E
wNIU |" 20N2A | : 20N1U
20N1A 20N2E
20NIE 20N2U
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.
"Wedel [-__votage
PVM- 14N1U/14N2U/
20N1U/20N2U
SSM- 14N1U/20N1U
AC120 + 3V
(Distortion rate: 3% or less)
PVM- 14N1A/14N1E/
14N1MDE/
LAN2A/I4N2E/ | eee ie
20N1A/20N1E/ (Distortion rate: 3% or less)
20N2A/20N2U
SSM- 14N1E/20N1E
3-5. 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 \erify 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 o/ the screen
become green. Fig.2—»3
7) Ifthe deflection yoke comes too far forward, you will see the
pattern shown in Figure 4. If that happens, 1ower the
deflection yoke to the rear. Fig. 43
8) Switch the single color switch to B and verify the smgle color.
Fig.6
9) Switch the single color switch to R and verify the sin gle color.
Fig.9
10) When one of the colors does not become the singl: color cor-
rectly, check by repeating items 7 and 8 based onthe single
color not coming into adjustment.
If you can not obtain landing in the corners, pase on mag-
nets.
11) Switch to an all-white signal and check the unifomiity.
12) When the deflection yoke position is determine(, fasten it
with the fixture.