Sony BVP-550 Maintenance Manual page 748

4-3. Overall Electrical Alignment
4-3-14. Master Black Adjustment
4-3-14. Master Black Adjustment
Equipment : Waveform monitor
Test Point
: TEST OUT connector
Preparations:
• Connect the waveform monitor to the TEST OUT
connector.
• RGB/ENC switch (on the side panel) → RGB
• R/G/B switch (on the side panel) → G
Iris of the lens: CLOSE
Adjustment Procedures:
1. Set the waveform monitor as follows.
• LUM mode
2. Set the DISP switch (on the side panel) to MENU
while holding down the MENU SEL switch (on the
front panel).
3. Set the menu as follows, and adjust the black level by
using the MENU SEL switch.
MENU : Paint
PAGE : Video Level (P1)
ITEM : Black [M]
Specifications: A = 3 ±1 IRE (for NTSC)
A = 21 ±7 mV (for PAL)
(Waveform Monitor)
3. Set the RGB/ENC switch (on the side panel) to ENC.
4. Adjust the auto black balance.
AUTO W/B BAL switch (on the front panel) → BLK
File Store:
Execute the file store. Press the MENU SEL switch to
execute.
MENU : Reference File
PAGE : Reference File (R1)
ITEM : File Store
4-38 (E)
BVP-550