Sony Mavica MVC-FD81, Service Manual, Page: 52 / 92

5-4
Color bar chart standard picture frame
Fig. a VG signal waveform (CN802
9
pin of PK-44 board)
Fig. b (LCD screen)
Adjust the camera zoom and direction to
obtain the output waveform shown in Fig. a
and the LCD screen shown in Fig. b.
White
Black
841mm
1189mm
1-1-4. Precaution
1. Setting the Switch
Unless otherwise specified, set the switches as follows and perform
adjustments without loading cassette.
1. PLAY/STILL/MOVIE switch
(PK-44board S708,712) ............................................... STILL
2. FOCUS switch ...................................................... MANUAL
3. PROGRAM AE switch (PK-44board S706)
........................................ Auto (No mark indicated on LCD)
4. PICTURE EFFECT switch (PK-44board S703) ............. OFF
2. Order of Adjustments
Basically carry out adjustments in the order given.
Fig.5-1-6.
3. Subjects
1) Color bar chart (Standard picture frame)
When performing adjustments using the color bar chart, adjust
the picture frame as shown in Fig. 5-1-6. (Standard picture
frame)
2) Clear chart (Standard picture frame)
Remove the color bar chart from the pattern box and insert a
clear chart in its place. (Do not perform zoom operations during
this time.)
3) Flange back adjustment chart
Make the chart shown in Fig. 5-1-7 using A0 size
(1189mm
×
841mm) black and white vellum paper.
Fig. 5-1-7.
Note: Use matte vellum paper bigger than A0, and make sure the edges of
the black and white paper joined together are not rough.
Yellow
Cyan
Green
White
Magenta
Red
Blue
LCD picture frame
Electron beam scan frame size
External trigger : CN802
8
pin (COM) External trigger : CN802
!¡
pin (LANC IN)
A
B
A=B
C
D
C=D
H
H
Yellow
Cyan
Green
White
Magenta
Red
Blue
0
±
0.1msec
V