7
Model No: CT-21NI9R
Version 1.0
4-4. Main Power Adjust (B+)
a. Switch on power switch.
b. Measure the voltage with digital voltage meter between two terminals of C615.
d. Adjust
VR601
to obtain 110+/-0.5V on the Digital Voltage meter. (The voltage will have
a little difference when use difference type of CRT.ORION A51JSW91X50 CRT is
118V;HITACH CRT is 110V)
5. Complete TV General Adjust
5-1. Screen Voltage Adjust(G2).
Set TV set to factory mode without signal input. Then press MUTE button, a horizontal line
appears.
a. Adjust the “SCREEN” knob of FBT until a horizontal line is just can be seen.
b. Pressing MUTE button to exit one line mode.
5-2. Focus Adjust
a. Receive CROSS HATCH PATTERN, set picture to Dynamic statue by pressing PP
button.
b. Adjust the “FOCUS” knob of FBT to get a most clear picture.
5-3. White Balance Adjust.
Receive black & white pattern (PAL SYSTEM)
a. Set picture to Standard statue, adjust white balance equipment to get 2cd/m2 at low
brightness and 100cd/ m2 at high brightness.
b. Enter white balance adjust mode of factory mode. Two probes of white balance
equipment close up the low brightness and high brightness area.
c. Adjust
Red Gain, Green Gain
,
Blue Gain
;
DC Red
,
DC Green, (DC Blue is better to
fixed to 64)
using remote handset to meet factory requirement. Button’s function refers to
the following table.
Remote handset:
5-4. Horizontal/Vertical Central Adjust
a. Receive MONOSCOPE PATTERN.
b. Get
H Position
item, use VOL+/- buttons to set H center of the picture to meet factory
requirement.
c. Vertical central can not be adjusted by IIC bus. But we can use a 1.5K /2W resistor (R312
or R311 )or omit it to adjust it
Summary of Contents for CT-21NI9
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