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Service Manual - CTV-5512
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THE METHOD
* SCREEN VOLUME
OF ADjUSTMENTS
ADJUSTMENT
(1) Fix the video output DRIVER VOLUME VROO4,605 and the video output BIAS VOLUME VR601,602,603 to the VOLUME center. (2) Adjust the BRIGHTNESS and the CONTRAST VOLUME to minimum. (3) Change the SERVICE SWITCH SW~ to the SERVICE JX>sition. (4) Becoming the CROSSWA Y A LINE, adjust the SCREEN VOLUME.
* WHITE
(1) (2) (3) (4) (5) (6)
BALANCE
ADjUSTMENT
Fix the SERVICE SWITCH to the SERVICE position. The CROSSW AY A LINE adjust the BIAS VOLUME VR601,602,603 the white. Fix the SERVICE SWITCH to the NORMAL JX>sition. Attach the LUMINANCE METER to the contrast to I;naximum. Adjust the BRIGHTNESS and the CONTRAST to minimum. The LED of the LUMINANCE METER adjust the video output BIAS VOLUME to the green coloro (7) Adjust the brightness and the contrast to minimum. (8) The LED of the luminance meter adjust the video output bias volume to the green colar. (9) Adjust again to a (5),(6),(7),(8) clauses.
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* FOCUS VOLUME ADJUSTMENT * ABL ADJUSTMENT
(1) (2) (3) (4)
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(1) Receive the LION PATTERN. (2) Adjust the brightness and the CONTRAST VOLUME to maximum. (3) Adjust the focus volume to clearness.
(Automatic
Brightness
Limit)
Receive the CROSS HATCH PATTERN. Adjust the brightness and the CONTRAST VOLUME to maximum. Connect TP105,100 POINT with the DC VOL TMETER. The voltage of TP105,106 POINT adjust the SUB BRIGHTNESS VOLUME(VR701) to 0.22:t 0.OO5(V).
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* VIF DET. COlI.. ADJUSTMENT
(1) The MEASUREMENT UNIT connectas shown in Figure 13. (2) Set the VIF ADjUSTMENT MEASUREMENT UNIT from the left (FREQUENCY(MHz) oi Fėgure 14.)
M~INPCB
TP103
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TP10'4
TP107 TP188
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maximum.
IV-5V
RGC
GND
PDUER SUPPLV
figure 13 The Method oi the MeasurementUnit Connection
(3) FREQUENCY(MHz)
3190t1Hz
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