Focus Adjustment; Blk Adjustment; Fbt Focus Vr Controls (20 Inch) - Sony TRINITRON PVM-14L2 Service Manual

2-19. Focus Adjustment

Find the following adjustment menu in the layer under the
DEFLECTION menu of the service mode.
FOCUS
H DF PARA
H DF PHASE
1. Connect the 480/60I cross hatch signal to the Y/G
terminal of RGB/COMPONENT IN connector.
2. Perform the coarse focus adjustment until focus is
optimized at the center of screen using the following
adjustments.
RV707/C board (14 inch)
D C B
RV707
[FOCUS]

FBT Focus VR controls (20 inch)

3. Obtain the optimum focus on the corners of screen
using [H|DF|PARA] and [H|DF|PHASE] of the
menu. (20 inch)
PVM-14L2/20L2
A
1
2
3
4
Focus (H)
4. Connect the 480/60I all white signal to the Y/G
terminal of RGB/COMPONENT IN connector.
Confirm that there is no color non-uniformity nor color
error. If picture quality is deteriorated significantly,
reduce the H DF PARA value on the menu and
compromise the focus adjustment.
2-20. V BLK Adjustment
The following adjustment sub menus are located in the
layer under the DEFLECTION menu of the Service Mode.
RASTER V
V SIZE
V CENTER
V BLK TOP
1. Connect the 480/60I crosshatch signal to the Y/G
terminal of RGB/COMPONENT IN connector.
2. Adjust the BRIGHT knob on the front panel until the
raster becomes visible.
3. Press the UNDER SCAN button to enter the under-
scan mode.
4. Adjust V BLK TOP so that the upper blanking is
aligned with the video signal scarcely.
5. Switch the video input to the 575/50I signal and
perform the same adjustment.
2-17