Brightness Adjustments - Panasonic BT-H1700BMC Service Manual

1.10.12 BRIGHTNESS ADJUSTMENTS

BRIGHTNESS ADJUSTMENTS (HDTV)
Measuring Instruments
Card (Slot)
Test Points
Adjustment Points
Notes:
•
Perform the following adjustments after completing the Contrast and White Balance adjustments.
•
Set the PICTURE SUB ADJ. data in the Setup Menu to "00".
•
The value adjusted at the SR adjustment becomes the reference value for the following adjustments. When this data
is changed, it is required to re-adjust the data of all of the adjustment signals (HDTV, SDTV and NTSC/PAL). When re-
adjusting the 1080/60i signal, use the SI.
•
When overscan data of a signal is changed, it is required to re-adjust the underscan data of the same adjustment
signal.
•
After completing the brightness adjustments, make sure that the Low-Light is not deviated. If it is, it is required to
perform the Low-Light adjustment again.
– Standard value (SO) adjustment –
<White Balance HIGH: D9300>
(1) Apply the 1080/60i component gray scale signal to INPUT A.
(2) Set "COLOR TEMP." of COLOR TEMP./BAL. in the Setup Menu to HIGH.
(3) Set the PHASE, CHROMA, BRIGHT and CONTRAST potentiometers on the
front panel to the center click positions.
(4) Adjust SR02 in the Service Menu so that the 0% black area in the gray scale
signal lights up slightly. (Be sure to avoid degradation of the black color.)
<White Balance LOW: D65>
(1) Set "COLOR TEMP." of COLOR TEMP./BAL. in the Setup Menu to LOW.
(2) Adjust SR06 so that the 0% black area in the gray scale signal lights slightly.
(Be sure to avoid degradation of the black color.)
– Other signals adjustments –
<White Balance HIGH: D9300>
(1) Apply the 1080/60i component gray scale signal to INPUT A.
(2) Set "COLOR TEMP." of COLOR TEMP./BAL. in the Setup Menu to HIGH.
(3) Set the PHASE, CHROMA, BRIGHT and CONTRAST potentiometers on the front panel to the center click positions.
(4) Adjust SI02 in the Service Menu so that the 0% black area in the gray scale signal lights up slightly.
(Be sure to avoid degradation of the black color.)
(5) Set the UNDER SCAN button on the front panel to ON so that the scanning size is underscanning.
(6) Adjust SP26 so that the 0% black area in the gray scale signal lights slightly. (Be sure to avoid degradation of the black color.)
(7) Set the UNDER SCAN button on the front panel to OFF.
<White Balance LOW: D65>
(1) Set "COLOR TEMP." of COLOR TEMP./BAL. in the Setup Menu to LOW.
(2) Adjust SI06 so that the 0% black area in the gray scale signal lights slightly. (Be sure to avoid degradation of the black color.)
(3) Set the UNDER SCAN button on the front panel to ON so that the scanning size is underscanning.
(4) Adjust SP27 so that the 0% black area in the gray scale signal lights slightly. (Be sure to avoid degradation of the black color.)
(5) Set the UNDER SCAN button on the front panel to OFF.
(6) Vary the adjustment signal and adjustment data, and re-perform adjustments in steps 7 to 18 above (see Table 21).
Adjustment Signal
COMMON
1080/60i
1080/50i
1080/24psF
720/60p
720/50p
Signal generator (Gray scale signal)
Component/RGB Input Card (Slot 1)
S*02 (Overscan Bright High), S*06 (Overscan Bright Low),
SP** (Underscan Bright High/Low)
[Service Menu]
White Balance HIGH
Overscan
SR02
SI02
SK02
SL02
SM02
SN02
Underscan Overscan
– SR06
SP26 SI06
SP32 SK06
SP35 SL06
SP38 SM06
SP41 SN06
Table 21
0 2 4 6 8 10 1214 0 2 4 6 8 10 1214
% %
0% Black area
White Balance LOW
Underscan
–
SP27
SP33
SP36
SP39
SP42
%
ELE-57