JVC DT-V2000SU Service Manual page 44

DT-V2000SU
VGA (Fv : 45Hz
~
90Hz) VERTICAL LINEARITY ADJUSTMENT
VERTICAL LINEARITY (Fv : 45
~
55Hz)
Test equipment Signal generator(Cross-hatch pattern)
Test points
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Adjustment locations
DM01(V LINEARITY1), DM02(V LINEARITY 2)
1. Input the VGA cross-hatch pattern signal of the 26kHz / 50Hz to the input
C terminal.
2. Confirm the vertical linearity about the screen top-bottom and center,
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and if illeagal, adjust the DM01 to correct the vertical linearity. I
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3.Confirm the vertical linearity about the screen half of the upper and
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lower, and if illeagal, adjust the DM02 to correct the vertical linearity.
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II
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L
TO STRAIGHT
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•
VERTICAL LINEARITY (Fv : 55 ~ 65Hz)
Test equipment Signal generator(Cross-hatch pattern)
Test points
Adjustment locations DM04(V LINEARITY1), DM05(V LINEARITY 2)
1. Input the VGA cross-hatch pattern signal of the 31 kHz/ 60Hz to the
input C terminal.
2. Confirm the vertical linearity about the screen top-bottom and center,
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and if illeagal, adjust the DM04 to correct the vertical linearity.
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3. Confirm the vertical linearity about the screen half of the upper and
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lower, and if illeagal, adjust the DM05 to correct the vertical linearity.
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L
TO STRAIGHT
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VERTICAL LINEARITY (Fv : 65
~
75Hz)
Test equipment Signal generator(Cross-hatch pattern)
•
Test points
Adjustment locations DM07(V LINEARITY1), DM0S(V LINEARITY 2)
1. Input the VGA cross-hatch pattern signal of the 36kHz / 70Hz to the
input C terminal.
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2. Confirm the vertical linearity about the screen top-bottom and center,
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II
and if illeagal, adjust the DM07 to correct the vertical linearity.
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3. Confirm the vertical linearity about the screen half of the upper and
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lower, and if illeagal, adjust the DM08 to correct the vertical linearity.
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1,
L
TO STRAIGHT
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No.515198