9
(12). Output C Gain Adjustment
Test Point:
Video Out Composite Connector
Rear Panel
Adjust:
R444 (COMP C)
Mixer Board
8
Connect the Vectorscope to the Video Out Y/C Connector.
8
Adjust R444 so that the Chrominance Gain and Phase are
adjusted to proper position (± 3%, 3%) as shown in Fig. 3-
8.
Fig. 3-8
(13). Output SC-H Adjustment
Test Point:
Video Out Composite Connector
Rear Panel
Adjust:
R445 (SC-H)
Mixer Board
8
Connect the Vectorscope to the Video Out Y/C Connector.
8
Adjust R445 so that the SC-H Phase becomes 0 ± 5°.
(14). ADV. REF. SC-H Adjustment
Test Point:
ADV. REF. Out Connector
Rear Panel
Adjust:
R446 (ADV.REF.)
Mixer Board
8
Connect the Vectorscope to the ADV. REF. Output
Connector.
8
Adjust R446 so that the SC-H Phase becomes 0 ± 5°.
(15). Gen/Lock Colour Phase Adjustment
Test Point:
Video Out Composite Connector
Rear Panel
Adjust:
R438 (C-PHASE)
Mixer Board
8
Supply the Video signal to the Gen/Lock Input Connector.
8
Adjust the Colour Phase roughly 0° by Switch SW201.
8
Adjust R438 so that the Colour Phase becomes 0 ± 10 °.
(16). Gen/Lock Horizontal Phase Adjustment
Test Point:
Video Out Composite Connector
Rear Panel
Adjust:
R436 (H-PHASE)
Mixer Board
8
Supply the Video signal to the Gen/Lock Input Connector.
8
Adjust the Horizontal Phase roughly 0° by Switch SW203.
8
Adjust the Horizontal Phase 0° by Switch SW202.
8
Adjust R436 so that the Horizontal Phase becomes 0 ± 70
nS.
■
Input Board
■
Before start to adjust the Input Board, executes the
executes Manual Digitizer, set the Record mode.
(17). FVCXO1 Frequency Adjustment
Test Point:
TP202 (FVCXO1)
Input Board
Adjust:
C601 (FVCXO1)
Input Board
8
Disconnect all input from the AY-NE2000E.
8
Connect the Frequency Counter to TP202.
8
Adjust C601 to obtain 4.433624 MHz ± 5 Hz.
(18). FVCXO2 Frequency Adjustment
Test Point:
TP206 (FVCXO2)
Input Board
Adjust:
C602 (FVCXO2)
Input Board
8
Disconnect all input from the AY-NE2000E.
8
Connect the Frequency Counter to TP206.
8
Adjust C602 to obtain 4.433624 MHz ± 5 Hz.
(19). Component Carrier Balance Adjustment
Test Point:
Video Out Y/C Connector
Rear Panel
Adjust:
R805 (COMP CAR BAL-1)
Input Board
R806 (COMP CAR BAL-2)
Input Board
8
Select the CH1-Component Input by the Device setting,
and supply the Colour Bar signal to the Component Input
Connector of CH1.
8
Connect the Vectorscope to the Video Out Y/C Connector.
8
Set the Gain Control of the Vectorscope to the maximum.
8
Adjust R805 and R806 so that the vector positions at the
center of the Vectorscope as shown in Fig. 3-9.
Fig. 3-9
8
Set the Gain Control of the Vectorscope to the normal.
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Positions at center.
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