Sony Trinitron PVM-8041Q - Focus Adjustment; White Balance Adjustment; Screen (G2) Voltage Adjustment

PVM-8041Q/8044Q
Screen-corner Convergence
a^
a-d :screen-corner
misconvergence
M
1. Receive the broadcast.
2. CONTRAST -> Normal
3. Adjust FOCUS control so that the focus on the center of screen
becomes to the best.
3-4. WHITE BALANCE
[Screen (G2) Voltage Adjustment]
1. Receive a dot signal with the pattern generator.
2. Adjust R. G. B cut-off controls so that respective cathode voltage
against ground becomes 103 V DC.
3. Observing the screen, adjust SCREEN control so that the back¬
ground of the dot signal is bright dimly.
[White Balance]
1. Receive a color-bar pattern signal with the pattern generator.
(Make black and white screen by chroma switch off.)
2. • BRIGHTNESS.50%
• CONTRAST.Minimum
• CHROMA.50%
• DRIVE control.Mechanical center
• BKG control.Mechanical center
3. Adjust RV118 (SUB BRT) on B board so that the blue stripe
portion on the color-bar pattern signal is bright dimly.
color-bar pattern L(J
4. Receive an entirely white signal from the pattern generator.
5. CONTRAST.70% (90 degree clockwise from
mechanical center.)
6. Using the luminance level meter, adjust the luminance level of the
pattern generator becomes 3 Nits. (The condition the screen is
bright dimly.)
7. Adjustwhitebalanceatcut-offusingRVl 19(G-C/0)andRV121
(B-C/0).
8. Change the all-white signal luminance level to 100 IREs.
9. Adjust white balance at high-light using RV120 (G-GAIN) and
RV121 (B-GAIN).
10. Change the unit to blue ONLY mode.
11. Adjust white balance (at high-light) in blue ONLY mode using
RV124 *R-GAIN/BL) and RV125 (G-GAIN/BL).
12. Using the luminance level meter, adjust the luminance level of the
pattern generator becomes 8 Nits. Confirm that white balance at
cut-off is satisfactory..
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