Panasonic OmniVision PV-M1326, Service Manual

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2-34
TP48
0.5V
5 S
A
B
1. Mount and secure Deflection Yoke so that the rear
edge of expansion flange is 1.5 inches from the tips of
the CRT pins as shown in Fig. E9.
2. Supply the Crosshatch Pattern Signal.
3. Degauss the CRT by the Degaussing Coil.
4. Adjust the pair of 4 - Pole Magnets so that B and R at
the center of CRT overlap each other.
5. Adjust the pair of 6-Pole Magnets so that B and R
which overlapped each other in Step 4 overlap G.
6. Supply the White Pattern Signal.
7. Remove the wedges from the CRT.
Loosen the expansion screw on the Deflection Yoke,
and move the Deflection Yoke toward the CRT.
8. Turn the R370 (G-CUT OFF) fully counterclockwise.
Adjust the pair of Purity Magnets so that the distorted
color areas are approximately across from each other.
Move the Deflection Yoke carefully backward (without
rotating it), until the distorted color areas disappear
from the screen.
9. Supply Crosshatch Pattern Signal again. Confirm that
the Center Bar is at the horizontal center line of the
CRT and the V- Center Bar is at the vertical center line
of the CRT. Then tighten the Expansion Screw.
10. Set the Service Switch on the TV Y/C Process Section
of the VCR Main C.B.A. to Service Position. Adjust the
R370 (G-CUT OFF) so that the Horizontal line is white.
11. Set the Service Switch to Normal Position. Make sure
that the whole screen is white. If not, adjust R365
(R-DRIVE) and R363 (B-DRIVE).
5. STATIC CENTRAL CONVERGENCE
ADJUSTMENT
Service Note for VV2706:
Picture Tube Ass'y is preadjusted at factory and should
not be disturbed unless absolutely necessary.
Purpose:
To set the uniform convergence over the whole screen.
Symptom:
The convergence on the screen will vary from the
center portion to the surrounding edges.
TP ADJ. MODE INPUT
Pair of 4-Pole Magnets, STOP (VIDEO IN)
Pair of 6-Pole Magnets CROSSHATCH
PATTERN
SIGNAL
TAPE M.EQ. SPEC.
NTSC VIDEO PATTERN Refer to descriptions
GENERATOR below
Note:
Pair of 4 - Pole Magnets,
Pair of 6 - Pole Magnets : CRT Unit
1. Adjust the Pair of 4 - Pole Magnets so that B and R, at
center of CRT overlap each other.
2. Adjust the Pair of 6 - Pole Magnets so that B and R
which overlapped each other in step 1 overlaps G.
Fig. E8
4. PURITY ADJUSTMENT
Service Note for VV2706:
Picture Tube Ass'y is preadjusted at factory and should
not be disturbed unless absolutely necessary.
Purpose:
To set the uniform white over the whole screen.
Symptom of Misadjustment:
The white screen will vary from area to area.
TP ADJ. MODE INPUT
Pair of 4-Pole Magnets, STOP (VIDEO IN)
Pair of 6-Pole Magnets, CROSSHATCH
Pair of Purity Magnets, PATTERN
Deflection Yoke SIGNAL &
WHITE
PATTERN
SIGNAL
TAPE M.EQ. SPEC.
NTSC VIDEO PATTERN Refer to
GENERATOR/WHITE descriptions below
PATTERN GENERATOR
DEGAUSSING COIL
Note:
Pair of 4-Pole Magnets, Pair of 6-Pole Magnets,
Pair of Purity Magnets, Deflection Yoke : CRT Unit
Fig. E9
Purity Magnet Rings
(Pair)
Magnetic Rings
(6 Pole Pair)
Expansion Screw
1.5 inches
Magnetic Rings
(4 Pole Pair)
Expansion Flange