Sony BVM-1916 Operation And Maintenance Manual page 102

15. BC Board 2T PULSE CORRCTION ADJUSTMEN (BVM-1916 ONLY)
Tektronix 1410
Generator
2T PULSE signal
• YC SEP button (SUB CONTROL PANEL) ......... TRAP
l. 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.
r
I
L
'
LJ
I
2Tpu/§e \
A \ B
T
\_+
Tpu/,e, ("\
0
.LJ
w
T
I
Fig. 15-1
• Adjust L2 to obtain
the condition A "'-B.
.. The waveform balance
should not be lost
extremely.
VIDEO A
4-43
BG board
0
@)
®D
TP 1
,- [Q]
@
@
BC board
L2
[Q] [Q]
~
0
0
0
BG board
Oscilloscope
~
0
0
~~
~
@
16. BJ Board INTERLACE ADJUSTMENT
Color-bar signal
Tektronix 1410 (NTSC)/1411 (PAL)
• NTSC color bar signal
r--
I'
1r·---
--1!:
(
FULL FIELDcolor-bar)
75%AMPL
,, I
100 IRE
7.5 IRE set up
• PAL color bar signal
(
FULL FIELD color-bar)
75%AMPL
100 IRE
• YC SEP button (SUB CONTROL PANEL) ......... TRAP
Input color-bar signal
!O
the VIDEO A terminal of the set
2. Connect an oscilloscope to the TP6 on the BJ board.
'
3 Adjust RV6 to obtain the waveform on the oscilloscope as
shown in Fig. 16-1.
A==B
Fig. 16-1
r
4-44
VIDEO A
terminal
BJ board
TP6
®[_l®
@)
® ®
Oscilloscope
BJ board