Advertisement
OT-M3050W
.'YH2
'
~- --- ---- __ J __ --- ---- ---
YV
~YH1
~
--- ---- --· -r · ---
---
----.
B (R)
Gun Revolution Compensating Coil
(12} Brighten the raster to watch it easily by adjusting the
BRIGHT control of the remote control unit.
(13} Adjust V CENT VR (R418 on D-P.C. Board) to center
the raster postion top to bottom on the screen.
(14) If the adjustment margin of V CENT VR (R418} is
lacking for step (13), adjust the VRS magnet and
deflection yoke to extend the margin. At this time, be
careful not to get the top and bottom pin cushion
distortion Hnd the purity
worse.
(15) After adjusting, fix the deflection yoke by inserting the
wedges between
the
deflection
yoke
and
the
picture
tube.
about90'
Wedge
about
about
90'
90'
-~
Paper
Silicon Bond
about 90·
Wedge Position
NOTE:
The dellection yoke must be tightly fixed in position.
Cutoff Adjustment
Y-P.C.
Board
1.
Equipment to
be
used
RGB Signal Generator: Black Pattern
RGB input
Oscilloscope:
TPKG, TPKR, TPKB - TPY6
(GND)
2. Initial conditions
ASPECT:
FULL
SCAN:
OVER
Adjustment Mode: Adjustment Mode 2
3.
Adjustment Proeedures
(1} Receive a 33.750kHz Black Pattern signal.
(2) Connect an oscilloscope between TPKG and TPY6
(GND).
(3) Adjust SCREEN VR to set voltage "A" of the reference
pulse part to 155±4 V.
V Blanking
Reference Pulse
A
------''-------------GND
0
VRs on FBT
FOCUS2
FOCUS 1
SCREEN
(4) Change the connection of the oscilloscope
"+"
side to
TPKR
and check that
t!"i8 c!ifterence
between
".A"
of
TPKG and that of TPKR is within 15V.
(5) Change
the
connection of
the
oscilloscope "+" side to
TPKB and
check
that the difference
between
"A"
of
TPKG and that of TPKB is within 15V.
White Balance Adjustment
1.
Equipment
to be used
Video Signal Generator: Monochrome Pattern
VIDEO input
2.
Initial
conditions
ASPECT:
FULL
SCAN:
OVER
Adjustment Mode: Adjustment Mode 2
3.
Adjustment Procedures
(1) Receive an NTSC Color Bar Pattern signal and convert
it into a monochrome pattern with the remote control
unit.
(2) Set COLOR TEMP to 9300K with the remote control
unit.
(3) Adjust the white balance of the dark part (black part)
with the R-BIAS and B-BIAS controls of the remote
control unit.
(4) Adjust the white balance of the !light part (white part)
with the A-GAIN and B-GAIN controls of the remote
control unit.
(5) Since the white balance of the dark part changes when
adjusting the 11ight part of step (4), repeat step (3) and
(4). At this time, step (3) must be the last.
(6) Check the value of A-BIAS, B-BIAS, A-GAIN, and B-
GAIN and write down them.
(7) Set COLOR TEMP to 6500K with the remote control
unit.
-
38 -
Advertisement
