Sony BVP-550, Maintenance Manual

Page: 308 / 924

4-34 (E)
BVP-550
4-3-11. VA MOD Adjustment
Equipment : Waveform monitor
Test Point : TEST OUT connector
Preparations:
• Connect the waveform monitor to the TEST OUT
connector.
• GAIN switch (on the side panel)
→
L (0 dB)
• RGB/ENC switch (on the side panel)
→
RGB
• R/G/B switch (on the side panel)
→
R
Iris of the lens : CLOSE
Adjustment Procedures:
1. Set the waveform monitor as follows.
• LUM mode
2. Set the menu as follows, and adjust the V MOD for R
by using the MENU SEL switch.
MENU setting
:
MENU : Maintenance
PAGE : White Shading (M2)
ITEM : H Saw [R]
→
99
Adjustment Point:
MENU : System config
PAGE : PR/VA/TEST (S3)
ITEM : VA MOD [R]
Specifications
: Flatten the portion A.
Adjust so that the level at portion A
does not fluctuate even if the setting
value for H Saw [R] varies from 99
to –99.
(
×
5)
3. Set the R/G/B switch (on the side panel) to G.
4. Set the menu as follows, and adjust the V MOD for G
by using the MENU SEL switch.
MENU setting:
MENU : Maintenance
PAGE : White Shading (M2)
ITEM : H Saw [G]
→
99
Adjustment Point:
MENU : System config
PAGE : PR/VA/TEST (S3)
ITEM : VA MOD [G]
Specifications : Flatten the portion A.
Adjust so that the level at portion A
does not fluctuate even if the setting
value for H Saw [G] varies from 99
to –99.
5. Set the R/G/B switch (on the side panel) to B.
6. Set the menu as follows, and adjust the V MOD for R
by using the MENU SEL switch.
MENU setting :
MENU : Maintenance
PAGE : White Shading (M2)
ITEM : H Saw [B]
→
99
Adjustment Point
:
MENU : System config
PAGE : PR/VA/TEST (S3)
ITEM : VA MOD [B]
Specifications
: Flatten the portion A.
Adjust so that the level at portion A
does not fluctuate even if the setting
value for H Saw [B] varies from 99
to –99.
File Store:
Execute the file store. Press the MENU SEL switch to
execute.
MENU : Triming File
PAGE : Triming File (T1)
ITEM : File Store
Resetting after Adjustment:
• Set the menu as follows. Press the MENU SEL switch to
execute.
MENU : Maintenance
PAGE : White Shading (M2)
ITEM : Clear
4-3. Overall Electrical Alignment
4-3-11. VA MOD Adjustment