Panasonic OmniVision PV-M1326, Руководство по обслуживанию, Страница: 38 / 173

2-35
Permalloy Magnetic Strip
CRT
Adhesive
portion
Magnetic
portion
DY
Permalloy Magnetic Strip
Magnetic
portion Adhesive
portion
Model : H,I,J,K
WEDGE POSITIONS
Wedges (Rear View)
A
B
C
Fig. E10-2
Fig. E10-4
Fig. E10-3
6. DYNAMIC 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 at the sides of
CRT.
TP ADJ. MODE INPUT
DEFLECTION STOP (VIDEO IN)
YOKE CROSSHATCH
PATTERN SIGNAL
& WHITE PATTERN
SIGNAL
TAPE M.EQ. SPEC.
NTSC VIDEO PATTERN Refer to descriptions
GENERATOR/WHITE below
PATTERN GENERATOR
Note:
Deflection Yoke : CRT Unit
1. Supply the Crosshatch Pattern Signal.
2. Hold Deflection Yoke and wiggle it up and down to correct
Crosshatch Pattern position (Refer to Fig. E10-1).
3. Hold Deflection Yoke and wiggle it right to left to correct
Crosshatch Pattern position (Refer to Fig. E10-2).
4. Insert three wedges as shown in Fig. E10-3 to maintain
the correct crosshatch pattern position.
(Confirmation of white)
1. Supply White Pattern Signal.
2. Confirm purity.
3. If the purity is not sufficient, re-adjust purity.
Model : H,I,J,K
4. If the convergence error is more than 1.5mm (0.06 inch)
from the green dot at each corner, adjust the
convergence at that corner with a Permalloy Magnetic
Strip*. Insert a permalloy strip into the gap between the
DY and CRT along a diagonal line of a CRT bell. Adjust
it at the best point of the corrected convergence. Use a
permalloy strip at each corner only when the
convergence is out of the specs at the corner.
* Permalloy Magnetic Strip Part Number (TSM10032-2).
Fig. E10-1