JVC AV-56WP30 Service Manual page 39

CO NVERGENCE ADJUSTMENT
Measuring
Item
instrument
CONVERGEN- Signal
CE PHASE gener ator
adjustment
Remote
control unit
Dynamic adjustment mode
A
Fig. 1
Dynamic adjustment mode
B
Fig. 3
REMOTE CONTROL KEY POSITION
SPLIT k ey
PHASE/DYNAMIC
100+ key
Select green line
FUNCTION key
Adjusting the line
Test point Ad justment part
SERVICE SW (S801)
[CONVERGENCE
PWB]
Phase adjustment mode
A
A
Fig. 2
Phase adjustment mode
B
B
Fig. 4
SELECT key
Memory of the
setting data
Number k ey
Screen center
adjustment
No. 52007
Description
1. Receive a NTSC cross-hatch signal.
2. Press the SERVICE SW S801 on the CONVERGENCE PWB
to enter the dynamic adjus tment mode.
3. Press the 100+ key to select the green line.
4. Using the FUNCTION (▲) (CH+) key, intentionally expand the
blinking horiz ontal green line as shown in the Fig. 1.
5. Press the SPLIT key to enter the phase adjustment mode.
6. Using the FUNCTION ( / ) key, adjust the screen so that the
point "A" is loc ated between the cross-point of the dotted line
and the vertical line on the left side as shown in the Fig. 2.
7. Press the SPLIT key again to return to the dynamic adjus tment
mode.
8. Press the 100+ key to select the green line.
9. Return the point "A", which was intentionally expanded, to its
original pos ition.
10. Using the FUNCTION (
vertical line as s hown in the Fig. 3.
11. Press the SPLIT key to enter the phase adjustment mode.
12. Using the FUNCTION (▲/▼) key, adjus t the screen so that the
peak of the point "B" meets with the adjacent dotted line as
shown in the Fig. 4.
13. Press the SPLIT key again to return to the dynamic adjus tment
mode.
14. Press the 100+ key to select the vertical green line.
15. Using the FUNCTION ( ) key, return the point "B", which was
intentionally expanded, to its original position.
16. Press the SPLIT key again to enter the phase adjustment
mode.
17. Using the 2(up) / 4(left) / 5(down) / 6(right) key, adjust the
screen so that the cross-point of the dotted line is pos itioned at
the screen c enter on the screen. (Fig. 5)
18. Press the SELECT key twice and memorize the set value.
AV-56WP30
) key, intentionally expand the
Screen c enter
Fig. 5
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