Toshiba 43VJ33Q, Service Manual

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CONVERGENCE ADJUSTMENT
1. SCREEN ADJUSTMENT
The adjustment is carried out on four screens; 4 : 3 and 16 : 9
screens in both PAL and NTSC modes. When making the ad-
justments, feed an external signal to make an synchroniza-
tion.
Note:
The convergence circuit is a circuit to eliminate screen distor-
tion and can not make a drastic correction such as to correct
entire screen size. An excessive correction may actuate the
protection circuit. So a care will be necessary.
Before proceeding to the adjustment for each screen, always
perform the adjustments for vertical size (HIT) and horizontal
size (WID) with the main deflection data changed.
Order of the adjusting screens is PAL 4 : 3
→
PAL 16 : 9
→
NTSC 4 : 3
→
NTSC 16 : 9.
The menu order is 1
→
2
→
3 .... when the vertical sync is 50
Hz. (In this case, item 4~6 are not displayed)
The menu order is 4
→
5
→
6 .... when the vertical sync is 60
Hz. (In this case, item 1~3 are not displayed)
1-1. Entering the Adjustment Menu
Fig. 1
Conver Adjust MENU
1. Adjust PAL (50 Hz) 4:3
2. PALL 4:3 to Others
3. Adjust PAL 16:9
Conver Adjust MENU
4. Adjust NTSC (60 Hz) 4:3
5. NTSC 4:3 to NTSC 16:9
6 Adjust NTSC 16:9
or
When receiving
PAL (50Hz)
When receiving
NTSC (60Hz)