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– 5 –
8
Adjust R1 so that the blooming and noise of Bch on the
Video Monitor become minimum as shown in Fig. 4-2.
8
Adjust R2 so that the blooming and noise of Gch on the
Video Monitor become minimum as shown in Fig. 4-2.
8
Adjust R3 so that the blooming and noise of Rch on the
Video Monitor become minimum as shown in Fig. 4-2.
Fig. 4-2
8
Open the menu and turn off the electronic shutter.
(5). Preamp. Adjustment
Test Point:
E307 (G)
Analog Process Board
E507 (B)
Analog Process Board
E107 (R)
Analog Process Board
Adjust:
R323 (G-WC)
Analog Process Board
R123 (R-WC)
Analog Process Board
R523 (B-WC)
Analog Process Board
R446 (G-LEVEL)
Analog Process Board
R328 (G-DC)
Analog Process Board
R646 (B-LEVEL)
Analog Process Board
R528 (B-DC)
Analog Process Board
R246 (R-LEVEL)
Analog Process Board
R128 (R-DC)
Analog Process Board
8
Observe at E307, E507 and E107 by the Oscilloscope.
8
Turn R323, R523 and R123 so that the signals are not
clipped as shown in Fig. 4-3.
8
Turn R328, R528 and R128 so that the signals do not go
below the Blanking Level as shown in Fig. 4-3.
Fig. 4-3
8
Connect the Oscilloscope to E307.
8
Adjust R446 so that G-Level becomes 300 mVp-p as
shown in Fig. 4-4.
8
Adjust R328 so that the DC voltage at E307 becomes 0 V
as shown in Fig. 4-4.
8
Change the connection of the Oscilloscope to E507.
8
Adjust R646 so that B-Level becomes 300 mVp-p as
shown in Fig. 4-4.
(3). RG Voltage Adjustment
Test Point:
E301 (G-IN)
Analog Process Board
E101 (R-IN)
Analog Process Board
E501 (B-IN)
Analog Process Board
Adjust:
R59 (RG-G)
Drive Board
R61 (RG-R)
Drive Board
R57 (RG-B)
Drive Board
8
Open the Lens Iris.
8
Connect the Oscilloscope to E301.
8
Adjust R59 so that the saturation level of Gch becomes
maximum and the distortion in the circle area becomes
minimum as shown in Fig. 4-1.
8
Change the connection of the Oscilloscope to E101.
8
Adjust R61 so that the saturation level of Rch becomes
maximum and the distortion in the circle area becomes
minimum as shown in Fig. 4-1.
8
Change the connection of the Oscilloscope to E501.
8
Adjust R57 so that the saturation level of Bch becomes
maximum and the distortion in the circle area becomes
minimum as shown in Fig. 4-1.
Fig. 4-1
(4). V
SUB
Voltage Adjustment
Adjust:
R1 (VSUB-B)
Drive Board
R2 (VSUB-G)
Drive Board
R3 (VSUB-R)
Drive Board
Observe:
Video Monitor
8
Aim the Camera at the 40-watt Lamp placed in the dark
background.
8
Open the menu and set the electronic shutter speed to
1/500.
8
Open the Lens Iris so that the blooming becomes visible.
Saturation level
becomes
maximum
Distortion
becomes minimum
Good
No Good
No Good
Good
Position of White Clip VR
Position of Preamp. DC VR
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