Sony KE-50XBR900 Service Manual - Page 31

White Balance Adjustment PDM-5000 - service mode

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2-2. White Balance Adjustment (PDM-5000) • Measurement equipment 1.Color analyzer (CA-100 manufactured by MINOLTA) 1.Signal generator (ASTRO DESIGN VG-828D) • Measuring procedure 1. Dab the W/B adjustment jig (CA-100) at the glass face of the panel. 2. Connect the Signal generator (VG-828D) to the DVI terminal. 3. Input All-white signal and set the picture mode to DYNAMIC. 4. Select"PNLCTRL" in the service mode menu and set "0 WBNO" at "0" 5. Select "SCNR" "SCNB" of "PDPWB" in the service mode menu, and then adjust following W/B standardized values of 6500K, 8000K, 9300K, 10000K and 13550K to following values of X/Y. W/B standardized values: 6500K+8MPCD 8000K+8MPCD 9300K+8MPCD 10000K 13550K W/B 0 1 2 3 4 X 0.3133±0.003 0.2944±0.003 0.2838±0.003 0.2806±0.003 0.2684±0.003 Y 0.3297±0.003 0.3100±0.003 0.2981±0.003 0.2883±0.003 0.2700±0.003 6. After adjusting the values, at the values of the "SCNR" or "SCNB" exceeding 128 (initialize value). 1)Reset a lager value of the "SCNR" or "SCNB" at 128. 2)Set the White Balances with the last of items and "SCNG" to the X/Y values above. 7. After the above step, when these item are nonqualified following conditions, set the largest one at 128 and readjust the White Balance with the last two item. 1)No one of "SCNR", "SCNB" and "SCNG" exceeding 128 2)Confirm the item value 128 at least one item 8. As a result above, input the sequential number of value to the "SCNR", "SCNB" and "SCNG". 9. Repeat the same step 5 thru 8 for the W/B 1 thru 4 after setting the "0 WBNO" at each W/B number. 10.Input following signals from the Signal generator (VG-828D). 1)All-white signal (255/255) input Y (luminance)=45cd/m2 or more 2)1/25Window (255/255) input Y (luminance)=45cd/m2 or more • Service mode lists Caution: 1. Setting functions of Display section are displayed with yellow OSD. 2. Be careful not to set DATA in the yellow-covered OSD menu. The setting will be memorized. 3. items are not required adjustment or are banned adjustment Category Item Function No. Name PDPWB 00 SCNR Sub contrast RED gain 01 SCNG Sub contrast GREEN gain 02 SCNB Sub contrast BLUE gain 03 SBRR Sub brightness RED 04 SBRG Sub brightness GREEN 05 SBRB Sub brightness BLUE Data range Initialize value Device Name 0-255 0-255 0-255 0-255 0-255 0-255 128 128 128 128(Fix) 127(Fix) 128(Fix) (Slave Address) CXD9738R Category Item No. Name PDPSHAP 00 CRMD 01 HTAP 02 VTAP 03 AGCM 04 EDDL 05 EDGA 06 EDNM 07 EDDE 08 DHVS Function Data range Initialize value Device Name (Slave Address) KE-50XBR900(UC) 2-2

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KE-50XBR900(UC)
2-2
• Measuring procedure
1. Dab the W/B adjustment jig (CA-100) at the glass face of the panel.
2. Connect the Signal generator (VG-828D) to the DVI terminal.
3. Input All-white signal and set the picture mode to DYNAMIC.
4. Select”PNLCTRL” in the service mode menu and set “0 WBNO” at “0”
5. Select “SCNR” “SCNB” of “PDPWB” in the service mode menu, and then adjust following
W/B standardized values of 6500K, 8000K, 9300K, 10000K and 13550K to following values
of X/Y.
6. After adjusting the values, at the values of the “SCNR” or “SCNB” exceeding 128 (initialize
value).
1)Reset a lager value of the “SCNR” or “SCNB” at 128.
2)Set the White Balances with the last of items and “SCNG” to the X/Y values above.
7. After the above step, when these item are nonqualified following conditions, set the largest
one at 128 and readjust the White Balance with the last two item.
1)No one of “SCNR”, “SCNB” and “SCNG” exceeding 128
2)Confirm the item value 128 at least one item
8. As a result above, input the sequential number of value to the “SCNR”, “SCNB” and
“SCNG”.
9. Repeat the same step 5 thru 8 for the W/B 1 thru 4 after setting the “0 WBNO” at each W/B
number.
6500K+8MPCD 8000K+8MPCD 9300K+8MPCD
10000K
13550K
W/B
0
1
2
3
4
X
0.3133
±
0.003
0.2944
±
0.003
0.2838
±
0.003
0.2806
±
0.003
0.2684
±
0.003
Y
0.3297
±
0.003
0.3100
±
0.003
0.2981
±
0.003
0.2883
±
0.003
0.2700
±
0.003
W/B standardized values:
2-2. White Balance Adjustment (PDM-5000)
• Measurement equipment
1.Color analyzer (CA-100 manufactured by MINOLTA)
1.Signal generator (ASTRO DESIGN VG-828D)
• Service mode lists
Caution: 1. Setting functions of Display section are displayed with yellow OSD.
2. Be careful not to set DATA in the yellow-covered OSD menu. The setting will be
memorized.
3.
items are not required adjustment or are banned adjustment
10.Input following signals from the Signal generator (VG-828D).
1)All-white signal (255/255) input Y (luminance)=45cd/m
2
or more
2)1/25Window (255/255) input
Y (luminance)=45cd/m
2
or more
Category
Item
Function
Data range
Initialize value
Device Name
No.
Name
(Slave Address)
PDPWB
00
SCNR
Sub contrast RED gain
0-255
128
CXD9738R
01
SCNG
Sub contrast GREEN gain
0-255
128
02
SCNB
Sub contrast BLUE gain
0-255
128
03
SBRR
Sub brightness RED
0-255
128(Fix)
04
SBRG
Sub brightness GREEN
0-255
127(Fix)
05
SBRB
Sub brightness BLUE
0-255
128(Fix)
Category
Item
Function
Data range
Initialize value
Device Name
No.
Name
(Slave Address)
PDPSHAP
00
CRMD
01
HTAP
02
VTAP
03
AGCM
04
EDDL
05
EDGA
06
EDNM
07
EDDE
08
DHVS