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HIGH-VOLTAGE ADJUSTMENT
Measuring Instruments Signal generator (All-black signal)
High-voltage voltmeter
Card (Slot) Component/RGB Input Card (Slot 1)
Test Points Anode of CRT
Adjustment Points VR502 (High-Voltage VR) [S. CORRECTION PWB]
Note: Perform the following adjustments after completing the Screen Voltage and X-Ray Protector adjustments.
1. Turn the VR502 fully clockwise.
2. Connect the high-voltage voltmeter to the anode of the CRT and turn the unit ON.
3. Apply the 1080/60i all-black signal to INPUT A (Terminal Y on the Component/RGB Input Card).
4. If the raster is visible, adjust the BRIGHT potentiometer on the front panel to turn the screen all black.
5. Turn VR502 slowly counterclockwise until the value of the high voltage is 25 kV ± 0.2 kV.
6. Apply adhesive for fixing the VR502 in the adjusted position.
7. Set the BRIGHT potentiometer on the front panel to the center click position.
HIGH-VOLTAGE ADJUSTMENT
S. CORRECTION PWB
MAIN PWB
Front side
TP-XR
TP-G
Front side
(Min) (Max)
(Min)(Max)
VR503 [ROTATION]
VR505 [CONV_V]
VR504 [CONV_H]
VR502 [H.VOLTAGE]
VR501 [X-RAY]
CN0RD
CN00R
(Top surface view of the S. CORRECTION PWB)
VR503
VR505
VR504
VR502
VR501
CN0RD
CN00R
VR502
VR501
FOCUSING ADJUSTMENT
Measuring Instruments Signal generator (Character signal)
Card (Slot) Component/RGB Input Card (Slot 1)
Test Points
Adjustment Points FOCUS VR1 [Top potentiometer on high-voltage transformer]
FOCUS VR2 [Middle potentiometer on high-voltage transformer]
Note: Perform the following adjustments after completing the Screen Voltage, X-Ray Protector and High-Voltage adjustments.
1. Apply the 1080/60i character signal to INPUT A (Terminal Y on the Component/RGB Input Card).
2. Set the CONTRAST and BRIGHT potentiometers on the front panel to the center click positions.
3. Adjust the FOCUS VR1 and VR2 so that the horizontal and vertical lines in the image are clearly visible.
FOCUSING ADJUSTMENT
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