Focus Adjustment - Sanyo C20VTI I-M Service Manual

5. TV Section Service Adjustments
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f Focus Adjustment
(1) Receive the monochrome circular pattern.
(2) Set the brightness to normal and contrast to
maximum.
(3) Adjust the focus control on the F.B.T for the
best focus on the screen center.
–16–
+1 15V
Adjustment
' (1) Tune the receiver to an active channel.
/
(2) Set the Brightness and Contrast to
normal.
(3) Connect Digital voltmeter to TP621 and
the ground.
(4) Adjust VR621 for115V * 0,5V,
+15V Adjustment
(1) Tune the receiver to an active channel.
(2) Set the Brightness, Contrast and Colour
to normal.
(3) Connect Digital voltmeter to TP631 and
the ground.
(4) Insert a video cassette to the VCR, and
set the recording mode by pressing the
REC button.
(5) Turn off the TV set by pressing Power
ON/OFF button.
(6) Adjust VR622 for 15V f 0.2V.
Vertical Size Adjustment
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(1)Receive the monochrome circular pattern.
(2) Set the Brightness and Contrast to
maximum,
(3)Adjust vertical size (VR51 O) control for full
scan.
rtical size
Vertical Center Adjustment
(1)Receive the monochrome circular pattern.
(2) Set the Brightness and Contrast to maximum.
(3) Adjust vertical centering using SW501.
rtical center