Section 3: Adjustment - Sony KLV-20G300A Service Manual

3.1 Preparation
1) Allow approximately 30 minutes for the set to warm up before proceeding with the
white balance adjustment.
2) Connect 3 terminal of 480i signal cable (Y I Pb I Pr) from the signal source to
m n o t i r o " C m o o p e n t n
3) Enter "SERVICE MODE". The method to enter "SERVICE MODE" is described in next section.
) 4 P e r s s e r o m e t c n o
4) Change "WHITE BALANCE" from "OFF" to "ON "in SERVICE MENU.
5) Select "VIDE03" from INPUT SOURCE in SERVICE MENU
6) Set "R", "G", "B", "GAIN" and "R", "G", "B", "Offset" value as same as "3.5.
AVERAGE VALUE"
3.2. Adjust White Balance of "COOL" temperature;
1) Select "COOL" from COLOR TEMPERATURE in SERVICE MENU
) 2 I p n t u 7 I 0 E R u F l l
3) Adjust "RGB GAIN" in SERVICE MENU if needed
) 4 I p n t u 3 l 0 E R u F l l
5) Adjust "RGB OFFSET" in SERVICE MENU if needed
6) Repeat adjustment of 2) to 5) so that White Balance is as same level as good monitor
3.3. Adjust White Balance of "NEUTRAL" temperature;
1) Select "NEUTRAL" from COLOR TEMPERATURE in SERVICE MENU
2) Repeat adjustment as same step of 2) to 5) till White Balance is as same level as
good monitor.
3.4. Adjust White Balance of "WARM" temperature;
1) Select "WARM" from COLOR TEMPERATURE in SERVICE MENU
2) Repeat adjustment as same step of 2) to 5) till White Balance is as same level as
good monitor.
11) Change "WHITE BALANCE" from "ON" to "OFF "in SERVICE MENU.
3.5. Average Value of W/B
SECTION 3 : ADJUSTMENT PROCEDURE
1 "
r t l o " 1 " o t u t n r
w i h e t p t a e t n r i s
w i h e t p t a e t n r i s
Red
Gain
232
255
255
n o " A i l n g e m t n n O "
n g l a n i o t " C m o o p e n
n g l a n i o t " C m o o p e n
Green Blue Red
Gain Gain Offset
232 248 126
255 255 124
255 250 125
12
t n 1 "
t n 1 "
Green Blue
Offset Offset
125 126
123 124
124 125
KLV-20G300A