Sony RM-PJM10 User Manual
3-7
VPL-CS2/CX1
3-5. White Balance Adjustment on
Servicing
3-5-1. Signal Level Adjustment
1.
Input the 10 STEP signal to INPUT-A.
2.
Warm up the unit at least 10 minutes. Enter the V-
AMP/BRT adjustment mode from the Service mode
AMP/BRT adjustment mode from the Service mode
as follows :
Service Mode
Service Mode
→
MENU
→
DEV.
ADJ
→
P. DRV
→
VAMP/BRT.
3.
Measure TP813, TP817, and TP821 on the C board
by osciloscope. Adujust V AMP/BRT so that the
minimum value in all black level is 2.8 V.
minimum value in all black level is 2.8 V.
4.
Input the 95 IRE and 100 IRE STEP signals.
5.
Set the unit in G-only mode.
6.
Enter the P.DRV on the MENU screen by the DEV.
ADJ.
ADJ.
7.
Discriminate the 95 IRE and 100 IRE by the V-
AMP/CONT controls of the P.DRV.
AMP/CONT controls of the P.DRV.
8.
Set the unit in R-only mode.
9.
Discriminate the 95 IRE and 100 IRE by the V-
AMP/SUB CONT R controls of the P.DRV.
10. Set the unit in B-only mode.
11. Discriminate the 95 IRE and 100 IRE by the V-
AMP/SUB CONT B controls of the P.DRV.
3-5-2. White Balance Adjustment
1) HIGH Mode of INPUT-A
Input the 10 STEP signal to INPUT-A, and observe the
chromaticity of each luminance.
When varying the chromaticity of each luminance,
When varying the chromaticity of each luminance,
perform the following adjustments.
1.
Input the 100 IRE FLAT FIELD signal to INPUT-A.
2.
Measure the chromaticity (x, y).
3.
Input the 50 IRE FLAT FIELD signal to INPUT-A.
4.
Adjust the chromaticity (x, y) to the values measured
in step 2 by the VAMP/SUB CONT R and B of the
P. DRV.
P. DRV.
2) LOW Mode of INPUT-A
1.
Input the 80 IRE FLAT FIELD signal to INPUT-A.
2.
Set the GAIN G to 60 with the LOW mode of the W/B.
3.
Measure the chromaticity (x, y).
4.
Input the 25 IRE FLAT FIELD signal to INPUT-A.
5.
Adjust the chromaticity (x, y) to the values measured in
step 3 by the BIAS G and B of the LOW mode of the W/B.
step 3 by the BIAS G and B of the LOW mode of the W/B.
6.
Repeat above steps 1 to 5 until the chromaticity become
the following values.
the following values.
x
±
0.002, y
±
0.003 (The x and y are the values
measured in step 3.)
3) HIGH Mode of VIDEO
Switch the input to COMPONENT from INPUT-A by the
SET SETTING of the Menu screen.
Input the 15k COMPONENT 10 STEP signal to INPUT-A,
Input the 15k COMPONENT 10 STEP signal to INPUT-A,
and observe the chromaticity of each luminance.
When varying the chromaticity of each luminance, perform
When varying the chromaticity of each luminance, perform
the following adjustments.
1.
Input the 100 IRE FLAT FIELD signal to INPUT-A.
2.
Measure the chromaticity (x, y).
3.
Input the 50 IRE FLAT FIELD signal to INPUT-A.
4.
Adjust the chromaticity (x, y) to the values measured in
step 2 by the VAMP/SUB CONT R and B of the P. DRV.
4) LOW Mode of VIDEO
1.
Input the 80 IRE 15k COMPONENT FLAT FIELD
signal to INPUT-A.
signal to INPUT-A.
2.
Set the GAIN G to 60 with the LOW mode of the W/B.
3.
Measure the chromaticity (x, y).
4.
Input the 25 IRE FLAT FIELD signal to INPUT-A.
5.
Adjust the chromaticity (x, y) to the values measured in
step 3 by the BIAS G and B of the LOW mode of the W/B.
6.
Repeat above steps 1 to 5 until the chromaticity become
the following values.
x
x
±
0.002, y
±
0.003 (The x and y are the values
measured in step 3.)