Sony BVM-1911 Operation And Maintenance Manual page 119

15. BC Board 2T PULSE CORRCTION ADJUSTMEN (BVM-1911 ONLY)
Tektronix 1410
Generator
2T PULSE signal
• YC SEP button (SUB CONTROL PANEL)········· TRAP
1. Input 2T pulse signal to VIDEO A terminal of the set.
2.
Connect an oscilloscope to the TPI of BG board.
3.
Adjust L2 of BC board so that A is equal to B as shown in
Fig. 15-1.
4.
Change the input signal from 2T pulse to T pulse. and make
sure the waveform balance is not lost extremely as shown in
Fig.
15-1.
L
u
2Tp"I" \ (\
JJU
T -,
Tpulse
A
~
R
-1J
V
T
t
Fig. 15-1
• Adjust L2 to obtain
the condition A ~ B.
• The waveform balance
shou Id not be lost
extremely.
VIDEO A
4-45
HY board
BG board
'---+-(o)o@)
D
®
TP 1
@)
@) @)
,-,
~
BC board
~
0
0
0
L2
~
~
BG board
Oscilloscope
~
0
0
~~
~