Test1 Adjustment - Sony BVP-550 Maintenance Manual

4-3-7. TEST1 Adjustment

Equipment : Oscilloscope
Preparation:
• Extend VA-163 board with EX-464 board.
Adjustment Procedures:
1. WHITE BAL switch (on the side panel) → PRST
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.
MENU : System config
PAGE : PR/VA/TEST (S3)
: TEST → 1
ITEM
4. Test Point : TP52 (GND:GND (A))/
Adjustment Point : 1RV50 (TEST)/VA-163 panel
: A = 880 ±2 mV
Specifications
5. Set the menu as follows, and adjust the white level for
R by using the MENU SEL switch.
Test Point
: TP54 (GND:GND (A))/
Adjustment Point:
MENU : Paint
PAGE : Video Level (P1)
ITEM : White [R]
: A = 880 ±40 mV
Specifications
BVP-550
Extension board
(extending VA-163)
Extension board
(extending VA-163)
6. Set the menu as follows, and adjust the white level for
B by turning the MENU SEL switch.
Test Point : TP50 (GND:GND (A))/
Extension board
(extending VA-163)
Adjustment Point:
MENU : Paint
PAGE : Video Level (P1)
ITEM : White [B]
: A = 880 ±40 mV
Specifications
Resetting after Adjustment:
• Set the menu as follows.
MENU : System config
PAGE : PR/VA/TEST (S3)
: TEST → Off
ITEM
4-3. Overall Electrical Alignment
4-3-7. TEST1 Adjustment
4-29 (E)