Sony BVP-550 Maintenance Manual page 747

4-3-13. White Shading Adjustment
Note:
• This adjustment could not be correctly performed if the
uneven white patten is used, luminance is not correct, or
lens iris and lens zoom are not in good conditions.
Equipment : Waveform monitor
Test Point
: TEST OUT connector
Object : Full white pattern
Preparations:
• Connect the waveform monitor to the TEST OUT
connector.
• ENC/RGB switch (on the side panel) → ENC
• Set the DISP switch (on the side panel) to MENU while
holding down the MENU SEL switch (on the front
panel). Set the menu as follows.
MENU : Paint
PAGE : Knee/W.Clip (P6)
: Knee → Off
ITEM
• Shoot the fully occupied white area of the pattern box in
the full underscanned monitor frame adjusting the zoom
control.
Iris of the lens : A = 80 ±5 IRE (for NTSC)
A = 560 ±35 mV (for PAL)
Adjustment Procedures:
1. Set the WHITE BAL switch (on the side panel) to
PRST.
2. Set the waveform monitor as follows.
• LUM mode
• VOLTFULL SCAN range → 0.5
3. Set the ENC/RGB switch (on the side panel) to RGB.
Set the R/G/B switch (on the side panel) to G.
4. If the white shading is monitored, make the waveform
flat referring to the following tables.
5. Perform the adjustments for R-ch and B-ch with the
same procedures as for G-ch.
BVP-550
Switch H SAW
PAGE:
White Shading (M2)
ENC/RGB → RGB ITEM: H Saw (R)
R
R/G/B → R
G ENC/RGB → RGB ITEM: H Saw (G)
R/G/B → G
ENC/RGB → RGB ITEM: H Saw (B)
B
R/G/B → B
TEST OUT connector
Switch V SAW
PAGE:
White Shading (M2)
ENC/RGB → RGB ITEM: V Saw (R)
R
R/G/B → R
G ENC/RGB → RGB ITEM: V Saw (G)
R/G/B → G
ENC/RGB → RGB ITEM: V Saw (B)
B
R/G/B → B
TEST OUT connector
File Store:
Execute the file store. Press the MENU SEL switch to
execute.
MENU : Reference File
PAGE : Reference File (R1)
ITEM : File Store
Resetting after Adjustment:
• ENC/RGB switch (on the side panel) → ENC
4-3. Overall Electrical Alignment
4-3-13. White Shading Adjustment
H PARA
PAGE:
White Shading (M2)
ITEM: H Para (R)
ITEM: H Para (G)
ITEM: H Para (B)
V PARA
PAGE:
White Shading (M2)
ITEM: V Para (R)
ITEM: V Para (G)
ITEM: V Para (B)
4-37 (E)