Va Mod Adjustment - Sony BVP-550 Maintenance Manual

4-3. Overall Electrical Alignment

4-3-11. VA MOD Adjustment

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)
: H Saw [R] → 99
ITEM
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.
4-34 (E)
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
PAGE
ITEM
Adjustment Point:
MENU
PAGE
ITEM
Specifications: Flatten the portion A.
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
PAGE
ITEM
Adjustment Point:
MENU
PAGE
ITEM
Specifications: Flatten the portion A.
File Store:
Execute the file store. Press the MENU SEL switch to
execute.
MENU
PAGE
ITEM
Resetting after Adjustment:
(×5)
• Set the menu as follows. Press the MENU SEL switch to
execute.
MENU
PAGE
ITEM
: Maintenance
: White Shading (M2)
: H Saw [G] → 99
: System config
: PR/VA/TEST (S3)
: VA MOD [G]
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.
: Maintenance
: White Shading (M2)
: H Saw [B] → 99
: System config
: PR/VA/TEST (S3)
: VA MOD [B]
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.
: Triming File
: Triming File (T1)
: File Store
: Maintenance
: White Shading (M2)
: Clear
BVP-550