Sharp 21V1-L Service Manual page 23

MODEL NAME
ADJ US TMENT
ITEM
ADJ US TMENT
P OS ITION
I2C CONTROL
CONTROL
P RE-ADJ US T
OP TION S ET UP , BUS S ET UP
REQUIREMENT
WINDOW P ATTERN OR US 4CH LION HEAD
CONTENT
INP UT
220 V
CONDITION
OUTP UT CONFIRMATION ON CRT DIS P LAY.
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
ADJ US TMENT
SET V23 TO "0", NEXT DISABLE THE Y-MUTE SO THAT PICTURE APPEAR IN NORMAL MODE.
P ROCEDURE
[VOLTAGE CONFIRMATION ]
S CREEN
V15,V16,V17
5 – 11
21V1-L
S TEP RANGE
21V1-L
0~255