Sharp 21V-R70M, Service Manual

Page: 20 / 42

20-1 20-2
ADJUSTMENT
ITEM
ADJUSTMENT
POSITION
CONTROL
PRE-ADJUST
REQUIREMENT
CONTENT
INPUT
CONDITION
OUTPUT
ADJUSTMENT
PROCEDURE
HISTORY
OF REVISION
WHITE BALANCE
V14,V15,V11,V12,V13 STEP RANGE 0-127, 0~255
I
2
C BUS CONTROL
OPTION SET UP, BUS SET UP, SCREEN
23CH 501RE WINDOW PATTERN
230V
CRT SCREEN DISPLAY.
1) WHITE (HIGH BEAM)
FIRST LET THE GUN POINT AT BLA CK POSITION (AS DRAWING
ATTACH), ADJ V04 UNTIL BRIGHTNESS Y BECOME 5 cd/m2 , THEN
LET THE GUN POINT AT WHITE POSITION (AS DRAWING ATTACH),
ADJUST V01 UNTIL BRIGHTNESS Y BECOME 150 cd/m2 , ADJUST
THE BUS DATA OF V14 (R DRIVE), V15(B DRIVE) UNTIL THE AXIS
OF COLOR TEMPERATURE BECOME X=0.273, Y=0.280
2) BLACK (LOW BEAM)
LET THE GUN POINT AT BLACK POSITION, IF THE VALUE SHIFTED
AWAY FROM THE DATA ADJUSTED IN STEP 1), ADJUST AGAIN THE
TWO SERVICE DATA WHICH HAVE CHOSEN AT SCREEN ADJUST
SO THAT TO OBTAIN THE SIMILAR AXIS AS ABOVE.
*WARNING: DO NOT DISTURB THE MINI STEP GUN DATA DURING
THIS ADJUSTMENT.
**REPEAT STEP 1), 2) TO GET A REGULATED POSITION.
[CHECKING CONFIRMATION]
X=0.273, Y=0.280 (11,600°K + 1 MPCD)
SYMBOL REVISED CONTENT,
BLACK
US14
WHITE
ADJUSTMENT
ITEM
ADJUSTMENT
POSITION
CONTROL
PRE-ADJUST
REQUIREMENT
CONTENT
INPUT
CONDITION
OUTPUT
ADJUSTMENT
PROCEDURE
HISTORY
OF REVISION
1) LET THE GUN POINT AT BLACK POSITION (AS ATTACH DRAWING),
ADJUST V04 BUS DATA UNTIL BRIGHTNESS Y=0.5 cd/m2, THEN
STEP DOWN MORE 4 STEP
SUB-BRIGHT
V04 STEP RANGE 0-255
I
2
C CONTROL
OPTION SET UP, BUS SET UP, SCREEN, WHITE BALANCE
WINDOW PATTERN
230V
CRT SCREEN DISPLAY.
[VOLTAGE CONFIRMATION]
BRIGHTNESS Y=0.5 cd/m2, THEN STEP DOWN MORE 4 STEP
SYMBOL REVISED CONTENT,
BLACK
US14
2
1
V-R
7
0
M