Sony BVM-1911 Operation And Maintenance Manual page 130

20. BD (PAL) BOARD PHASE SHIFT ADJUSTMENT (BVM-2011P ONLY)
COMP SYNC signal
Color-bar signal (R-Y (VJ OFF)
VIDEO A
75n
terminator
,..,.0
Atrenuator
EXTSYNC
terminal
HY board
(
FULL FIELD R-Y (VJ off)
75%AMPL
100 IRE
BG
board
TP2
·®D®
®
@) @
Fig. 20-1
Oscilloscope
• SYNC button (SUB CONTROL PANEL)············ EXT 4. Attenuate the signal by I 0dB by using attenuator.
• PAL S/SECAM F/COMB S button
(SUB CONTROL PANEL)····························· ON
5.
Adjust RV2 on the BD board so that the output waveform
becomes flat as shown in Fig. 20-2.
• RV2 (BD BOARD)······· .. ···············MECHANICAL CENTER
• CVl (BD BOARD)······· .. ···············MECHANICAL CENTER
• CV2 (BD BOARD)························MECHANICAL CENTER
1. Complete the connection as shown in Fig. 20-1.
2. Connect an socilloscope to the TP2 on the BG board.
3. Make the waeform flat with the PHASE control of front panel
(R)
as shown in Fig. 20-2.
6.
Restore the attenuator to 0dB.
7. Repeat the steps 3 to 5.
FRONT PANEL
PHASE
control
AUTO
SET UP
Fig. 20-2
PROBE DEGAUSS
~
SCREEN APER- BLUE t-lONO PliASE CHROMA BRIGHTNESS CONTRAST OVER
1
INPUT
2 ' ' ' ,---,--, TURE ONLY MOO€
Qg
[gJ[IJE3 R GB
O O O O
L~O[;j][;j]
[;j][;j]g[;j][;j][;j][;j][;j][;j]
~
[9l ij
ij ij
MA~UAL
~ ~
0
~ +c--f)=--'---'--~
I
PHASE
I
MANUAL:::
4-65
POWER
..--
.._____
BO board SUB CONTROL PANEL (HY board)
r01
RV2
0
~[Q]
0
0
CV2
~
[Q]
[Q]
00
[Q]
[Q]
~
CV1
~o
[Q] ~
0
0
0
[Q]
0 0
~
0
0
0
[Q]
BG board
fQ]
[QJ[QJ~~~
[Q]
0 0
0 0
0 0
OD'
0
OGA!N
0
1QWH1TE
BLUE
GREEN
RED
0 0 O.G
0
0[3!AS
0
2Q GRAY
POSITION-LEVEL-ADJUST
o~O
D1 RGB YUV CODED
0 0 0
0
3OFORMAT
TEST B A
0
S.A.D.
0 0 0
401NPUT
VITC
MARKER
EXT INT
0
OFILTER
0 0 sQsvNc
SECAM PAL NTSC
0
0
MATRIX
f-----
0 0
o
sQsYSTEM
ASU
f-----
CHROMA
/PHASE COMB TRAP •
o:~A~ F
0 0
0
1QYc SEP
COMBS
MEM3 MEM2 MEM1 065/093
WHITE
BAL R3 R2 Rl RO
0
0
CROSS
HATCH
0 0
0 0 0
eQ~IE
~
16: 9
4, 3
0 OSPLIT
CONFIGURATION
0
0
sQASPECT
SCREEN
6
SEL
REMOTE
0
0
oQ~f~¼
RESET ENT ESC
0 0 0
OMENU
AUTO SETUP
0
0
4-66