CONVERGENCE ADJUSTMENT
1. PICTURE ADJUSTMENT
The adjustment can be done on 7 screens; PAL 100 Hz, PAL1-2. Service Mode
625P, NTSC 525P. To synchronize correction wave to each
1-2-1. Outline
frequency, receive the suitable signal.
Service mode is controlled by software of micro-processor
Note: The convergence circuit is a circuit to eliminate screen
QA01, and is one of function of set.
distortion and can not make a drastic correction such
as to correct entire screen size. An excessive correctionThis mode has been designed so that ordinary user cannot
may actuate the protection circuit. So a care will beuse this, and special operation is required to use this.
necessary.Data change is done by direct shift (cursor display) of
adjusting points. 100 Hz, 625P mode (PAL) 8 x 8/1 color and
2
1-1. Change of Memory (EPROM)525P mode (NTSC).
2
GENERAL ADJUSTMENTSMemories of EPROM (QH173, QH174) are nonvolatile, and
used for storing adjusted data. Since data in RAM of QH100 is1-2-2. To Enter and to Exit
eliminated with power OFF, the RAM is set by soft command
Press mute (o) key on remote hand unit at twice, and hold it
of micro-processor QA01 at each time of power ON. The
down, then press MENU key of set console. The service data
adjusted data which is obtained from screen-watching is once
will be display on the top left screen. Under this condition, press
stored in RAM inside QH001. The whole data in RAM which is
"F+b" keys on remote hand unit so that the CONVER AD-
corrected on each adjusting point and is changed, is saved
2JUST MENU appears on the screen. Further, the screen returns
into EPROM (QH173, QH174) as a fixed data. The data
to original picture when you press "F+b" again.
capacity per one screen requires 8k for 100 Hz, 625P mode
(PAL), and 4k for 525P mode (NTSC).
o + o + MENU
S
F + b KEY
Menu Screen
Service data display
CONVER ADJUST MENU
1: ADJUST PAL 100Hz
2: PAL TO OTHER ALLF + b KEY
3: ADJUST PAL 625PExit from CONVER ADJUST MENU
4: NTSC 525P
ADJUSTING SCREEN
5: ADJUST 1080i 50 Hz 4:3
s or t
6: ADJUST 1080i 50 Hz 16:9
MENU Selection
7: ADJUST 1080i 60 Hz 4:3
8: ADJUST 1080i 60 Hz 16:9
+ KEY
SCREEN
+ KEYAfter saving DATA (And return to MENU)
adjustment
Note:
" 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.
" This model does not display 1080i (50/60Hz). Therefore, you can not select the items 5 through 8.
� 18 � |
ACEC
TOSHIBA
