Gamma Adjustment; White Balance Adjustment - Sony KLV-26S200A Service Manual

KLV-26S200A/32S200A/40S200A/46S200A
2. Send ECS_ADJUST_TCD3_CONT_V command.
3. Read the value of S-REG:APL_LUMA via ECS. Confirming that
the value is within spec of the table below.
AD-Adjust Video Spec
Reference register name
S-REG: APL_LUMA
2-2-11. Set up of C signal calibration2 adjustment
for video.
1. Input NTCS colour bar 75%Y , 75%C via AV1 input.
2. Send ECS_ADJUST_LEVEL_SETTING_INIT command.
3. Ensure noise reduction NR=1 (Low), GAMMA_EN=0,
P4_CVD2_85=0.
4. Set the following registration items.
Screen Size
ADJ_COLOR_Y_ATT(NTSC)
ADJ_COLOR_PAL(NTSC)
2-2-12. C signal calibration2 adjustment for video.
1. Send ECS_ADJUST_TCD3_HUE_V command.
2. Read S-REG: READ_BACK_B00 via ECS. (READ_AREA=0).
3. Read S-REG: READ_BACK_B01 via ECS. (READ_AREA=6).
4. Confirm that 8 bits of MSB of item number 2) and 3) are within
spec of the table below.
R e e f
R E A D _ B A C K
5. Read S-REG: TCD3_SATURATION via ECS.
6. Switch the TV set OFF and then ON again to retain adjustment
values.

2-3. Gamma Adjustment

The following adjustments are done via ECS.
Note: Before Gamma adjustment can begin the set needs 1 hour aging.
2-3-1. Set up mode for Gamma Adjustment
1. Send ECS_ADJUST_LEVEL_SETTING_INIT command.
2. Ensure COL_MATRIX_INDEX=15.
3. Ensure hreg p1_d_p_26=0 and hreg p1_d_p_28=0.
4. Ensure G_GAMMA_IDX_OFST=15.
5. Ensure DYNAMIC_EN=0.
RM-GA005
Spec.
TARGET_Y_V±2
26" 32"
128 128
1 1
e r n c e I e t m S p e . c
_ B 0 d * f i e f e r n c e a v u l e ±2
2-3-2. Set up Trident internal SG and brightness
1. Ensure TEST_PATTEN_ON=1.
2. Ensure TEST_G_LEVEL=204.
3. Ensure TEST_R_LEVEL=0.
4. Ensure TEST_B_LEVEL=0.
5. Measure brightness A.
6. Ensure TEST_G_LEVEL=102.
7. Ensure TEST_R_LEVEL=0.
8. Ensure TEST_B_LEVEL=0.
9. Measure brightness B.
10. Set up G_GAMMA_OFST_01=brightness B/brightness
A*10000. The result is written to G_GAMMA_OFST_01.
11. Send Gamma_Tbl_Search_1 command.
12. Ensure TEST_G_LEVEL=153.
13. Ensure TEST_R_LEVEL=0.
14. Ensure TEST_B_LEVEL=0.
15. Measure brightness C.
16. Set up G_GAMMA_OFST_02=brightness C/brightness
A*10000. The result is written to G_GAMMA_OFST_02.
40" 46"
17. Send Gamma_Tbl_Search_2 command.
18. S ave set up value in NVM in register G_GAM_IDX_OFST.
128 128
* Incase of 26V need reduce 2 from original data.
1 1

2-4. White Balance Adjustment

2-4-1. Set up mode for White Balance Adjustment
1. Send ECS_ADJUST_LEVEL_SETTING_INIT command.
2. Ensure COL_MATRIX_INDEX=15.
3. Ensure hreg p1_d_p_26=0 and hreg p1_d_p_28=0.
4. Ensure DYNAMIC_EN=0.
2-4-2. White Balance of colour temperature "High"
1. Set up COLOR_TEMP=0.
2. Set up GAMMA_OFF=15.
3. R_GAMMA_OFST_01=128
R_GAMMA_OFST_02=128
R_GAMMA_OFST_03=128
R_GAMMA_OFST_04=128
B_GAMMA_OFST_01=128
B_GAMMA_OFST_02=128
B_GAMMA_OFST_03=128
Set up B_GAMMA_OFST_04=128.
4. Set up ìWaitî.
5. Set up the correct values for 20IRE for TEST_R_LEVEL,
TEST_G_LEVEL and TEST_B_LEVEL.
– 18 –
measurement
20IRE
TEST_R_LEVEL 51
TEST_G_LEVEL 51
TEST_B_LEVEL 51