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r-
Process Board
Zoom Lens Unit
Fig. 4-4-2
(c) Beam alignment adjustment
Test points:
Process Board
Adjust:
Deflection Board
Coil Assembly
Remove the cap
Observe:
Fig. 4-4-1
(b) Beam current adjustment
7
4-4. Camera Unit Adjustment
•
Refer to page 23 for the test points and adjusting
control.
(a) Lens iris setting for adjustment
Test point:
Adjust:
TP204 (PRE
IDEO)
R114 (BEAM)
R224 (AIC SET)
Process Board
Deflection Board
Process Board
•
Aim the camera at the
scene
which contains
a
high
intensity object.
•
Adjust BEAM
R114
until
the waveform
is
clipped
at 2.4 p-p. (Fig. 4-4-2)
If the
signal does not increase up to
2.4 p-p, aim the
camera
at
a brighter object.
TP213(R)
TP212(B)
TP207 ( + 3.3 )
R116 (FOCUS)
Alignment magnets
Color monitor
• Also turn SIGNAL SHADING
R208 to
R215 to
their mechanical center.
Steps denoted by shaded ouii'-ns do not hive to be
performed if only vidicon is replaced.
• Turn AIC SET
R224 fully counterclockwise.
• Connect the oscilloscope to TP204.
• Trigger the oscilloscope at H.rate. (Use TP105 on
deflection board)
•
Set the lens iris referring to
(a)
Lens iris setting for
adjustment
on
page 7.
•
Disconnect
the
connector
CN208 for the
automatic
gain control (AGC) from the Process circuit board
and
connect
a jumper wire
between pin 2 of
CN208
and TP207
(+3.3 ).
•
Airn the
camera
at the white chart
•
Connect the
oscilloscope
to
TP213
(R) and
TP212
(8).
•
Trigger the
oscilloscope
at H rate. (Use TP105 on
deflection board)
•
Turn DYNAMIC FOCUS
R131,
R132,
R133
and
R134
to their mechanical center.
• If a
horizontal magenta bar
is observed
on the
monitor, turn H.CENTERING
R 107 clockwise until
the bar
disappears.
Test point:
Adjust:
• Connect the frequency counter to TP201.
• Adjust 3.58MHz ADJ
C202 for 3.579545MHz ±
10Hz.
4-3. Sync Adjustment
• Refer to page 23 for the test points and adjusting
controls.
(a) 3.58MHz adjustment
T 201 (SC)
C202 (3.58MHz ADJ)
Adjust:
Iris setting screw
•
Set
the standby
power switch on the rear of camera
to the STANDBY position.
Note:
Before setting
the lens iris opening, the standby
power switch on the camera
should
be STAND
BY
position or the power switch on the power
supply must be turned OFF.
•
Remove the cap for the iris setting
screw from
the
zoom lens unit. (Fig. 4-4-1)
• While
pushing the ins setting screw (in the
zoom lens
unit) with
the screw driver, turn the screw
clockwise
about 90 degrees until it locks. When the iris
setting
screw is locked, the screw will not
come back unless
it
is turned counterclockwise.
•
Set the standby power
switch to
the
ON position.
In
this state, the automatic
iris
control function
goes off
and the lens iris is set to the
specific ins opening.
•
Set the zoom lens to the automatic iris control (AIC)
mode by turning the iris setting screw in the zoom
lens counterclockwise to unlock it after setting the
standby power switch to the STANDBY position.
• Set the standby power switch to the ON position.
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