Sharp 21G-FX10L, Service Manual

Page: 14 / 49

21G-FX10L
5 – 7
HORIZONTAL ,VERTICAL,DEFLECTION LOOP ADJUSTMENT (1)
NO
ADJUSTMENT POINT ADJUSTMENT CONDITION / PROCEDURE WAVEFORM OR OTHERS
1 V-SHIFT (1) Receive US4 CH LION HEAD Signal (NTSC 60 Hz).
Figure A B
(I2C BUS CONTROL) (2) Choose the service data
V07
.
(3) Adjust
V07
to align the center of the screen to the geometric center of CRT.
Note: B line (Monoscope middle line) must same or nearest higher position
to the A mark (Tube middle mark),refer to the attach drawing.
OK OK
NG
2 V-SIZE (1) Receive US4 CH LION HEAD Signal (NTSC 60 Hz).
(I2C BUS CONTROL) (2) Choose the service data
V10
.
(to be done after V-shift adj)
(3) Adjust
V10
bus data until the overscan become
10 ± 2.5 %.
Caution 1: Pls aging TV more than 10 minutes before adjustment
3 V-LINEARITY (1) Receive US4 CH LION HEAD Signal (NTSC 60 Hz).
(I2C BUS CONTROL)
(2) Choose the service data
V29
.
(3 )Already preset. (Adjust this unless the linearity is achieved.)
4
VS CORRECTION (1) Receive US4 CH LION HEAD Signal (NTSC 60 Hz).
(I2C BUS CONTROL) (2) Choose the service data
V27
.
(3 )Already preset. (Adjust this unless the linearity is achieved.)
5 H-SHIFT (1) Receive US4 CH LION HEAD Signal (NTSC 60 Hz).
(I2C BUS CONTROL) (2) Choose the service data
V08
.
(3) Adjust the
V08
bus data to have a balance position to spec of
A=B
(as attach drawing). A B
(4) If cannot make it to
A=B
, adjust from the best point so that
A
slightly smaller than
B
.
6 H-SIZE (1) Receive US4 CH LION HEAD Signal (NTSC 60 Hz).
(I2C BUS CONTROL) (2) Choose the service data
V35
(3) Adjust
V35
bus data until the overscan becomes
10 ± 2.5 %.
7 PARABOLA (1) Receive CrossHatch Pattern Signal (NTSC 60 Hz).
(I2C BUS CONTROL) (2) Choose the service data
V31
Adjust the 2nd vertical line from the right end of the crosshatch pattern
so that the middle 4 blocks are straight.
(3) Make sure both left / right of 2nd vertical line at optimum point