C109
C133
C107
C10
C114
C19
CN7
C214
C111
C17
CN6
TP1
G
C108
3
6
SIDE
B
SIDE
B
SIDE
B
MAIN
BOARD
VR
BOARD
TOPTALLY
BOARD
CIRCUIT
BOARDS
3.2
7
7
4:3/16:9
switching
The
4:3/16:9
switching
signal
from
the
camera
is
input
through
pin
5
of
the
VF
connector.
The
input
voltage
is
0
V
(L)
for
4:3
and
+5
V
(H)
for
16:9.
Based
on
this
signal,
the
rely
(RY501)
on
the
MAIN
board
is
connected
to
pins
2
and
9
for
4:3
or
to
pins
3
and
8
for
16:9.
The
signal
voltage
is
adjusted
by
VR501
(V.
HEIGHT)
with
4:3
or
by
VR502
(V.
HEIGHT
2)
with
16:9
and
the
adjusted
voltage
is
input
to
IC2
(drive
IC).
The
controlled
IC2
output
signal
is
used
to
control
the
V
size
of
the
deflection
yoke.
V-DFF
YOKE
1
IC2
3
5
V.
DRIVE
MAIN
BOARD
RY501
+5V
16
:
9/4
:
3
VR
BOARD
R601
3.3
Description
of
New
Circuit
16
:
9
4
:
3
VR502
VR501
