Sony KL-37W2U, Руководство по обслуживанию

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KL-37W2/37W2K
RM-838
KL-50W2/50W2K/50W2U
RM-838
3) Measure the voltage on TP5203 (R ch out).
4) Adjust RV5211 <RVCOM> so that the voltage on
TP5205 <R-V comout> might be – 0.6 V
±
0.02 V.
5) Measure the voltage on TP5403 (G ch out).
6) Adjust RV5411 <GVCOM> so that the voltage on
TP5405 (G-V com out) might be – 0.5
±
0.02 V.
7) Measure the voltage on TP5603 (B ch out).
8) Adjust RV5611 <BVCOM> so that the voltage on
TP5605 <R-V com out> might be – 0.8 V
±
0.02 V.
3-6. A BOARD ADJUSTMENT
(1) Pre-adjustment on “2G” output level.
1) Change following two data as follows.
CXA1839 “22 DC Tran” 1
→
0
“23 Dyn PIC” 2
→
0
2) Input 10-step swaveform on 1 Vpp (75
Ω
terminated
value) to Video 1 input.
3) Set picture control to RESET.
4) Adjust CXA1839Q “3. Sub-CON1” so that the level from
0 IRE to 100 IRE on TP1002 “2G” can approach to 2.4
Vp-p the most.
5) Adjust CXA1839Q “1. Sub-BRT” so that the level of 0
IRE on “2G” can approach to 2.9 Vdc the most.
100 IRE
0 IRE
2.4 V
p-p
2.9 V
DC
GND
(2) HUE, COLOR Adjustment
1) Input 75 % full field color bar to Video INPUT 1.
2) Adjust CXA1839Q “2. Sub COL1” so that the peak level
for 2 pulse on both right and left side on TP1003 “2B” can
be equal.
3) Adjust CXA1839Q “9. Sub HUE” so that the peak level of
2 pulse in the center on “2B” can be equal.
4) Return following two data.
CXA1839 “22 DC Tran: 0
→
1
“23 Dyn PIC: 0
→
1
Adjust “2. SCL1” Adjust “9. SHUE”
3-7. SUB BRT, SUB PIX ADJUSTMENT
(1) Sub BRT Adjustment
1) Input 10 step signal to Video, 1 picture mode: smart
Setup as follows
PIX = 90 %
COL = 50 %
BRT = 50 %
SHP = 50 %
2) Change two data as follows.
CXA1839 “22 DC Tran”1Æ0
“23 Dyn PIC” 2Æ0
3) Connect Oscilloscope to TP5403.
4) Adjust B with CXA2011 “3. Sub Bright” as 8.2 V
±
0.02
V.
5) Adjust A with CXA2011 “1. Drive Level” as 2.9 V
±
0.02
Vpp.
6) Return following data as follows.
CXA1839 “22 DC Tran” 0
→
1
CXA1839 “23 Dyn PIC” 0
→
2
B
A
3-8. WHITE BALANCE ADJUSTMENT
1) Keep set with aging condition more than 15 min.
2) Change to following data.
CXA1839 “22 DC Tran”
→
0
“23 Dyn PIC”
→
0
CXD2412 “6. BL Bias”
→
00
“7. RL Bias”
→
00
3) Input 30 IRE flat field signal.
4) Adjust CXA2011 “12R cutoff” and “14B cut off” can be
within standard. (CXA2011 “13G cutoff” so that cutoff
white balance should be fixed to 124.)
Standard
X = 0.2952 with in 4JND
Y = 0.3047
5) Input 70 IRE flat filed signal.
6) Adjust CXA2011 “9R Drive” and “11B Drive” so that
high light can be within standard. (CXA2011 “10G Drive”
should be fixed by “31”)
Standard
X=0.2952
Y=0.3047 with in 5JND
7) Repeat 3)~6) and trucking and adjust so that both 30 IRE,
70 IRE is within standard.