Sharp 21V1-L, Service Manual

Page: 23 / 58

21V1-L
5 – 11
ADJUSTMENT
ITEM
ADJUSTMENT
POSITION
CONTROL
PRE-ADJUST
REQUIREMENT
CONTENT
INPUT
CONDITION
OUTPUT
ADJUSTMENT
PROCEDURE
21V1-L
I2C CONTROL
OPTION SET UP, BUS SET UP
WINDOW PATTERN OR US4CH LION HEAD
220 V
CONFIRMATION ON CRT DISPLAY.
[VOLTAGE CONFIRMATION ]
1) IN SERVICE MODE, SET
V04
TO 127 AND
V15
&
V16
&
V17
TO 127;
V18
&
V19
TO 64 , GET IN Y-
MUTE BY R/C AND SET V23 TO "1", PICTURE APPEAR IN CUT-OFF CONDITION
2)ADJUST THE SCREEN SO THAT CUT-OFF LINE APPEAR IN LOW BRIGHT, THEN JUDGE THAT
WHETHER THE CUT-OFF LINE APPEAR IN RED OR GREEN OR BLUE COLOR, IN THIS CONDITION
V15= R-CUTOFF,V16=G-CUTOFF,V17=B-CUTOFF, FIX THE DATA OF THE COLOR APPEAR IN CUT-
OFF LINE AND USE R/C TO ADJUST THE OTHER TWO CUT-OFF DATA SO THAT CUT-OFF LINE
COLOR BECOME WHITE.
3)TURN THE SCREEN VR OF FBT SO THAT CUT-OFF LINE JUST DISAPPEAR AND USE R/C TO
SET V23 TO "0", NEXT DISABLE THE Y-MUTE SO THAT PICTURE APPEAR IN NORMAL MODE.
MODEL NAME
SCREEN
V15,V16,V17 STEP RANGE 0~255