Sony BVM-2011P - 9. BC Board PHASE SHIFT ADJUSTMENT (BVM-1911 ONLY)

BC board
9. BC Board PHASE SHIFT ADJUSTMENT
(BVM-1911 ONLY)
2.
3.
COMP SYNC signal
Color-bar signal ( R-Y OFF)
Generator
*Color-bar signal
(
FULL FIELD R-Y off)
7.5% set up
100 IRE
75%AMPL
I. Complete the connection as shown in Fig 9-1.
• COLOR SYSTEM (SUB CONTROL PANEL)······ NTSC
• FORMAT button (SUB CONTROL PANEL) .......... CODED
• YC SEP button (SUB CONTROL PANEL)········· TRAP
• SYNC button (SUB CONTROL PANEL)············ EXT
Connect an oscilloscope to the TP2 on the BG board.
Make the waveform flat with the PHASE control of front panel
as shown in Fig. 9-2.
AUTO
SET UP
PROBE
I i
I I
Fig. 9-2
DEGAUSS
SCAN MODE
.-,---,
FRONT PANEL
SCREEN APER-BLUE "'10NO
~ TURE ONLY Pv10DE
Fig. 9-1
4.
5.
6.
7.
PHASE
control
75rl. terminator
/~
Attenuator
EXTSYNC
terminal
BG board
TP2
·®D®
®
@) @)
Oscilloscope
Attenuate the signal by l OdB by using attenuator.
Adjust RV3 on the BC board so that the output waveform
becomes flat as shown in Fig. 9-2.
Restore the attenuator to OdB.
Repeat the steps 3 to 5.
PHASE CHROW.. BRIGHTNESS CONTRAST OVER
1
INPU\
POWER
0
0 0 0 0 L~AD[g[g]
[g][g][g[g[g[g[g[g][g ~ ~ ij ij ij MA~UAL ~ ~
(\ I l)
I
PHASE I
MANUAL SW
PRE-=
4-35
BC board
0
0
0
~
~
0
0
~~
~
RV3
BG board
~
~~~~~
[Q]
0
~
tQ]
[Q]~~ QTP2R-Y
0
[Q)[Q)[Q)
0
0
0
4-36
SUB CONTROL PANEL (HY board)
0
0
OD
0
OGAIN
0
1Q WHITE
BLUE
GREEN
RED
0
0
OD-
0
QBIAS
0
2Q GRAY
POSITION -LEVEL-ADJUST
02 01 RGB YW
CODED
0
0
~
0
0 0
0
0 30FORMAT
TEST
B A
0 t'fg
0 0
0
401NPUT
MARKER
EXT
INT
0
0 FILTER
•
0
sQsvNc
SECAM
PAL NTSC
-
0
OMATRIX
ASU
0 0
• e0svsTEM
e--
CHROMA
/PHASE
COMB TRAP
0
o:~~F
0
0
•
1Qvc SEP
COMBS
MEM3 MEM2
MEM I 065/093
WHITE
BAL
R3
R2 Rl
RO
0
0 CROSS
HATCH 0 0
0 0
0
aQWe~rE
,___
16; 9
4: 3
0
OSPUT
CONFIGURATION
0
0
sQAsPECT
SCREEN
6
SEL
REMOTE
0
0
oQ~f~~
RESET
ENT ESC
0 0
0
OMENU
AUTO SETUP
0