Ntsc Output Level Adjustment (Bd Board) - Sony BKM-21D Maintenance Manual

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3-2-6. NTSC Output Level Adjustment
(BD Board)
n
The following adjustment menu is below the BKM-21D
menu of the MAINTENANCE menu.
Y LEVEL
PB LEVEL
PR LEVEL
1. Input the composite NTSC 100% color bar signal into
the VIDEO 4 input terminal.
(Full-field 0% set up)
2. Connect the oscilloscope to TP201 of the BD board.
3. Adjust the Y LEVEL data so that the Y OUT signal
level A of TP201 satisfies the specification.
A
Specification A = 673 ± 10 mV
Fig. 2-5.
4. Connect the oscilloscope to TP501 of the BD board.
5. Adjust the PB LEVEL data so that the PB OUT signal
level B of TP501 satisfies the specification.
B
Specification B = 660 ± 10 mV
Fig. 2-6.
3-8 (E)
6. Connect the oscilloscope to TP601 of the BD board.
7. Adjust the PR LEVEL data so that the PR OUT signal
level C of TP601 satisfies the specification.
C
Specification C = 660 ± 10 mV
Fig. 2-7.
BKM-21D

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