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Picture Output; Landing Adjustment - Sony PVM-20M2U Service Manual

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3-4. Picture output
1. AC
Input voltage setting
I. Input VIDEO signals and AUDIO signals to respective terminals
on the connector panel.
2. Set the sliduck AC voltage as shown in Table 3-5.
Table 3-5
Group of models
Voltage
PVM-14M4J(J)
PVM-20M4J(J)
AC 100±3V
PVM-14M1J(J)
(Distortion factor:3% max.)
PVM-14M4U(UIC)
PVM-14M2U(U/C)
AC 120±3V
PVM-20M2U(U/C)
PVM-20M4U(UIC)
(Same as above)
PVM-14M4E(AEP)
PVM-14M2E(AEP)
PVM-14M2A(AUS)
PVM-14M4A(AUS)
AC220±3V
PVM-20M4E(AEP)
PVM-20M2E(AEP)
(Same as above)
PVM-20M4A(AUS)
3-5. Landing adjustment
I. CONT ... MAX
BRT ... Conspicuous position
2. Roughly adjust the white balance, 02, and convergence.
3. Switch the rotary SW of the single color switch to change the
color into green only.
4. Adjust the purity knob so that the green will come to the center
of the screen. Make R and B almost identical. (Fig. 3-1)
5. Switch to B only, R only, and G only and verify each. (Figs.3-l,
3-2. and 3-3)
6. Bring the deflection yoke gradually forward and adjust the de-
flection yoke so that R and B on both sides of the screen will
be
green. (Fig.3-2- Fig. 3-3)
7. If the deflection yoke comes forward too much, the pattern shown
in Fig.3-4 will appear. If so, move the deflection yoke back-
ward. (Fig.3-4- Fig.3-3)
8. Switch the single color switch to B and verify the single color.
(Fig.3-6)
9. Switch the single color switch to Rand verify the single color.
(Fig.3-9)
10. When two colors are mixed, set the mixed color as the standard,
and repeat operations 6 and 7.
II. Switch to
an
all-white signal and check the uniformity.
12. When the deflection yoke position is determined, fasten it with
the fixture.
-20-
Fig.3-1
~
A'=A
-.~._
Fig.3-2
Flg.3-3
Fig.3-4
Fig.3-5
Fig.3-6
Fig.3-7
Fig.3-8
Fig.3-9
Fig.3-10
Fig.3-11
Purity control
Purity
Deflection yoke
Fig.3-12

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