Encoder System Adjustment; Output Level Adjustment (Pr-248 Board) - Sony BVP-9500WS Maintenance Manual

3-3. Encoder System Adjustment

3-3. Encoder System Adjustment
3-3-1. DA Output Level Adjustment (PR-248 Board)
Equipment: Oscilloscope
Notes
. Perform this adjustment only when PR-248 board adjustment is not completed.
. This adjustment must be done at Field Rate 60 (for BVP-9500WS) or 50 (for BVP-9500WSP) : x1
speed. (Refer to Section 3-1-4.)
Preparations
. Remove the PR-249 board. (Refer to Section 1-5-7.)
. Extend the EN-141 board with the extension board (EX-762 board assembly or EX-464.)
. Disconnect the triax cable or optical fiber cable from CCU.
. Supply power from the AC adaptor (AC-550/550CE).
. OUTPUT switch/side panel → BARS
Adjustment procedures
1. Test point: Pin 80 (84)/EX-762 (EX-464) board
GND: Pin 79 (82)/EX-762 (EX-464) board
1RV4 (Y GAIN) /PR-248 board
Adj. point:
Specification: A = 700 ± 5 mV
[NTSC]
A
2. Test point: Pin 78 (81)/EX-762 (EX-464) board
GND: Pin 77 (79)/EX-762 (EX-464) board
1RV1 (R GAIN) /PR-248 board
Adj. point:
Specification: B = 700 ± 5 mV
[NTSC]
3-18 (E)
[PAL]
A
[PAL]
B B
BVP-9500WS/9500WSP MM