Sony BVM-1916 Operation And Maintenance Manual page 100

BC board
12. BC Board COLOR DIFFERENCE LEVELADJUSTMENT (BVM-1916 ONLY)
Color-bar signal
Tektronix 1410
Generator
*Color-bar signal
(
FULL FIELD colo,-ba,)
7.5% set up
100 IRE
75%AMPL
I
II
0
• YC SEP button (SUB CONTROL PANEL) ......... TRAP
I. Input color-bar signal to the VIDEO A terminal of the set
2.
Connect an oscilloscope to the TPlOl of BH board
3. Adjust RV4 of BC board so that the levels with·:· is flat as
shown in Fig. 12-1.
TP101 ROUT
Fig. 12-1
4. Connect an oscilloscope to the TP301 of BH board
Adjust the levels with+
to be flat respectively
useing RV4 of BC board.
S. Adjust RVS
of BC
board
\O
that the output waveform as
shown in Fig. 12-2.
TP301 8 OUT
Fig. 12-2
4-39
@)
BH board
TP101
TP201
TP301
@JD@)
@ @
Oscilloscope
Make flat
Make flat
BH board
Connect an oscilloscope to the TP201 of BH board.
6
7
Adjust RV4 and RVS of BG board so that the INPUT wave-
form becomes flat as shown in Fig. 12-3.
TP201 GOUT
RV4
~
RVS~
Fig. 12·3
BC Board
0
0
0
~
~
0
0
~~
~
RV4
~
~
RV5
4-40
BG board
~
[Q][QJ~~~
~
BH Board
~
~
~
0
~
TP101 R OUTQ
TP201 G OUT8
TP301 BOUT