Sony KLV-21SG2 (serv.man2) Service Manual ▷ View online
KLV-21SG2 (UC) 1-5E
1-9. D2 BOARD REMOVAL
1-10. H3 BOARD REMOVAL
1
Six screws
(+BVTT 3x6)
2
Screw
(+BVTP 3x14)
4
Five screws
(+BVTT 3x6)
5
D2 board
3
LCD bracket
1
Two screws
(+BVWHTP 3x12)
2
H3 board
KLV-21SG2 (UC) 2-1
SECTION 2
ADJUSTMENTS
< PREPARATIONS >
1. Aging
• Input no signal and set the monitor to aging mode.
• Aging Setting
MON_CON_REG_2 = 152
2. Aging condition
Power supply : 120V AC, 60Hz
Time : More than 10 minutes
Temperature : 22ºC to 28ºC
Luminance : On aging mode setting
Note:
When the power is cycled between aging and W/B adjustment,
perform the aging in 30sec or more before the W/B
adjustment.
2-1. Adjustment of signal level.
2-1-1. Check AD calibration registration items.
1. Check that follows items are default .
2-1-2. Y signal AD calibration of TV/VIDEO
input.
1. Check “CO_CTRL” = 0
2. Set data as follows.
3. Input 0 IRE black full field with burst in video 1 input .
4. Send “READ_PW_INPUT_Y” command from ECS.
5. Check thgat the detection value of “PW_INPUT_Y” is within
the standard of the following column.
6. Input 100 IRE white full field with burst.
7. Send “ADJUST_Y_LEVEL_VIDEO” command from ECS.
The Y_LEVEL_CCP2_04 registration of the video range is
adjusted automatic by this command.
Adjustment value also is copied in the TV and S video range.
8. Check that the detection value of “PW_INPUT_Y” is within
the standard of the following column.
2-1-3. C signal AD calibration of TV/VIDEO
input.
1. Check “MON_CON_REG 1” = 3
2. Set data as follows.
3. Input 0 IRE black full field with burst in video input .
4. Send “READ_PW_INPUT_CB” command from ECS.
5. Check thgat the detection value of “PW_INPUT_CB” is
within the standard of the following column.
6. Input blue full field with burst.
7. Send “ADJUST_C_LEVEL_VIDEO” command from ECS.
The C_LEVEL_CCP2_05 registration of the video range is
adjusted automatic by this command.
The value that increased and redused offset data is copied in
the TV and S video range.
8. Check that the detection value of “PW_INPUT_CB” is within
the standard of the following column.
9. Input red full field with burst.
10. Send “READ_PW_INPUT_CR” command from ECS.
11. Check that the detection value of “PW_INPUT_CR” is within
the standard of the following column.
<Setting data>
COLOR
25
DYNA_PICT
0 (OFF)
DC_TRAN
0 (OFF)
<Setting data>
COLOR
25
DYNA_PICT
0 (OFF)
DC_TRAN
0 (OFF)
<Video(composit) input standard value on blue full field>
Item
Standard
PW_INPUT_CB
225
±
2
<Video(composit) input detection value average on 0 IRE
black full field>
black full field>
Item
Standard
PW_INPUT_Y
14
±
3
<Video(composit) input detection value average on 100
IRE white full field>
Item
Standard
PW_INPUT_Y
200
±
2
<Video(composit) input detection value average on 0
IRE black full field>
IRE black full field>
Item
Standard
PW_INPUT_CB
128
±
5
<Video(composit) input standard value on red full field>
Item
Standard
PW_INPUT_CR
225
±
3
1
<Check registration items>
TARGET_PW_IN_Y
: Initial value
ADJ_Y_DEADBAND
: Initial value
ADJ_Y_LOOPATTEN
: Initial value
TARGET_PW_IN_C
: Initial value
ADJ_C_DEADBAND
: Initial value
ADJ_C_LOOPATTEN
: Initial value
AD_ADJ_TIME_OUT
: Initial value
AD_COLOR_OFFSET_TV
: Initial value
AD_COLOR_OFFSET_V
: Initial value
AD_COLOR_OFFSET_S
: Initial value
AD_COLOR_OFFSET_D1
: Initial value
AD_COLOR_OFFSET_D2
: Initial value
AD_COLOR_OFFSET_D3
: Initial value
AD_COLOR_OFFSET_D4
: Initial value
KLV-21SG2 (UC) 2-2
8. Check that the detection value of “PW_INPUT_CB” is within
the standard of the following column.
9. Input red full field with burst.
10. Send “READ_PW_INPUT_CR” command from ECS.
11. Check that the detection value of “PW_INPUT_CR” is within
the standard of the following column.
2-1-4. Y signal AD calibration of COMPONENT
input.
1. Check “CP_CTRL” = 0
2. Set data as follows.
3. Input 0 IRE black full field with burst in video 3 input .
4. Send “READ_PW_INPUT_Y” command from ECS.
5. Check thgat the detection value of “PW_INPUT_Y” is within
the standard of the following column.
6. Input 100 IRE white full field with burst.
7. Send “ADJUST_Y_LEVEL_D1” command from ECS.
The Y_LEVEL_CCP2_04 registration of the D1 range is ad-
justed automatic by this command.
Adjustment value also is copied in the D2, D3 and D4 range.
8. Check that the detection value of “PW_INPUT_Y” is within
the standard of the following column.
2-1-5. C signal AD calibration of COMPONENT
input.
1. Check “CP_CTRL” = 0
2. Set data as follows.
3. Input 0 IRE black full field with burst in video 3 input .
4. Send “READ_PW_INPUT_CB” command from ECS.
5. Check thgat the detection value of “PW_INPUT_CB” is
within the standard of the following column.
6. Input blue full field with burst.
7. Send “ADJUST_C_LEVEL_D1” command from ECS.
The C_LEVEL_CCP2_05 registration of the D1 range is ad-
justed automatic by this command.
The value that increased and redused offset data is copied in
the D2, D3 and D4 range.
<Setting data>
COLOR
25
DYNA_PICT
0 (OFF)
DC_TRAN
0 (OFF)
<Setting data>
COLOR
25
DYNA_PICT
0 (OFF)
DC_TRAN
0 (OFF)
<Video(composit) input detection value average on 0
IRE black full field>
Item
Standard
PW_INPUT_CB
128
±
5
<Video 3 input standard value on blue full field>
Item
Standard
PW_INPUT_CR
225
±
3
<Video 3 input detection value average on 100 IRE white
full field>
full field>
Item
Standard
PW_INPUT_Y
200
±
2
<Video 3 input detection value average on 0 IRE black
full field>
full field>
Item
Standard
PW_INPUT_Y
14
±
3
<Video 3 input standard value on blue full field>
Item
Standard
PW_INPUT_CB
225
±
2
KLV-21SG2 (UC) 2-3E
2-2. White Balance Adjustment
2-2-1. White Balance of color temperature
“high”
1. After setting PICTURE_MODE=2(Pro) set data as follows.
2. Input 70 IRE gray full field signal in video 1 input .
3. Adjust R_DRIVE, B_DRIVE until high light adjustment
value.
4. Input 20 IRE gray full field signal in video 1 input .
5. Adjust R_BKG, B_BKG until low light adjustment value.
6. Repeat step 2-5 until it is high and low light adjustment value.
7. Do “Color Save”
2-2-2. White Balance Adjustment of color
temperature “middle”
1. Set the COLOR_INDEX to 2 (Middle).
2. Set the R_DRIVE, G_DRIVE, B_DRIVE, R_BKG, G_BKG,
and B_BKG to the following calculated value.
3. Perform the Color Save.
<Confirmation of setting data>
Save system
Item
Picture Save
PICTURE =100 (Max)
BRIGHTNESS=50 (Center)
COLOR_INDEX=1 (“High”)
DYNA_PICT=0
DC_TRAN=0
GAMMA=28
U_BACKLIGHT=10 (Max)
Default Save
ECO_MODE=1 (Standard)
Color Save
R_DRIVE=124
G_DRIVE=128
B_DRIVE=140
R_BKG=128
G_BKG=128
B_BKG=119
<high light adjustment value (9000K)>
KLV-21SG2
range
x
0.264
0.4JND
y
0.268
0.4JND
Y
–
N/A
<back ground adjustment value >
KLV-21SG2
range
x
0.268
0.9JND
y
0.273
0.9JND
Y
–
N/A
Setting of Color Temperature “Low”
Item
Formula 21
R_DRIVE Adjusted value of Color Temperature “High”
× 1.081
G_DRIVE Adjusted value of Color Temperature “High”
× 1.000
B_DRIVE Adjusted value of Color Temperature “High”
× 0.851
R_BKG
Adjusted value of Color Temperature “High”
× 0.949
G_BKG
Adjusted value of Color Temperature “High”
× 1.000
B_BKG
Adjusted value of Color Temperature “High”
× 1.013
Setting of Color Temperature “Middle”
Item
Formula 21
R_DRIVE Adjusted value of Color Temperature “High”
× 1.011
G_DRIVE Adjusted value of Color Temperature “High”
× 1.000
B_DRIVE Adjusted value of Color Temperature “High”
× 0.941
R_BKG
Adjusted value of Color Temperature “High”
× 1.013
G_BKG
Adjusted value of Color Temperature “High”
× 1.000
B_BKG
Adjusted value of Color Temperature “High”
× 0.923
2-2-3. White Balance Adjustment of color
temperature “low”
1. Set the COLOR_INDEX to 3 (Low).
2. Set the R_DRIVE, G_DRIVE, B_DRIVE, R_BKG, G_BKG,
and B_BKG to the following calculated value.
3. Perform the Color Save.
4. After the adjustment, reset unsaved items (not included the
Color Save) to initial value.
Click on the first or last page to see other KLV-21SG2 (serv.man2) service manuals if exist.