2-2. Electrical Adjustment Using a VF Checker
3. Adjustment point1RV4 (H-SIZE WIDE) /VF-67:6. 16:9/4:3 switch (VF checker) ? 4:3
1RV10 (V-SIZE) /VF-67
1Centering magnet
Adjustment method : Adjust 1RV4 and 1RV10 so
that the positions of the
resolution chart are as shown
below.
(Viewfinder screen)
Turn the centering magnet only
when the left and lower corners
cannot be adjusted.7. Adjustment point1RV3 (H-SIZE) /VF-67:
Specification: Minimize the distortion of center
circle and the four circles at the
corners of the resolution chart.
Approx.
2 mm8. Check that the required specification is met.
Test point: TP3/VF-67 (B SIDE)
Specification?:0.25 V dc6.95
If not, repeat from step 7.
Chart frame
CRT
Approx. 2 mm
Picture frame
(Viewfinder screen)
4. Check that the required specification is met.
Test point: TP3/VF-67 (B SIDE)
Specification?:0.20 V dc8.80
If not, repeat from step 3.
5. Place the VF tube to the lower chassis as shown
below, and confirm that the picture is in the center of
the viewfinder in the normal installing position.
Centering magnet
RV8RV5 RV12RV13
RV7RV4RV6E1
TP2
CP4
RV3CP5CN2
TP3
(B SIDE)
CN5
NoteCP3 CP1RV15
CP2
When the centering magnet is turned, paint-lock it again.CN1
RV9RV10RV2
CN4
L2
RV11RV14
VF-67 BOARD (A SIDE)
2-12 (E)BVF-V20W/V20WCE |
ACEC
