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SECTION 9
VIDEO SECTION ADJUSTMENT
When
performing adjustments,
refer to the layout
diagrams
for adjustment
related parts beginning
from page 258.
9-1.
PREPARATIONS BEFORE ADJUSTMENT
The following adjusting instruments are used for adjusting the
video section.
9-1-1.
Equipments to be used
1) TV monitor
2) Oscilloscope: 2 phenomena, band 30 MHz or wider, with
delay
mode.
(Use
a
10:1
probe
unless
specified
otherwise.)
3) Frequency counter
4) Pattern generator with video output terminal
5) Digital voltmeter
6) Audio generator
7) Audio level meter
8) Audio distortion meter
9) Audio attenuater
10) Regulated power supply
11) Alignment tape
For tracking adjustment (WR5-1NP)
Part Code: 8-967-995-02
For video frequency characteristics adjustment
(WRS-6N)
Part Code: 8-967-995-12
For checking operations
(WRS-4NL)**'
Part Code: 8-967-995-51
(WRS-SNSP)"*?
Part Code: 8-967-995-42
For checking AFM stereo operations (WR5-9NS)
Part Code: 8-967-995-23
Note: The following alignment tapes can also be used.
1) WRS-3NL (8-967-995-31)
2) WRS5-4NSP (8-967-995-41)
12) Remote control unit for adjustment (J-6082-053-A)
13) JK-3100 board extension cord (10P, 1 mm)
Part Code: J-6082-064-A
14) AU-135 board, Cabinet (R) extension cord (30P, 0.8 mm)
Part Code: J-6082-135-A
15) Measuring pin for video section
Part Code: J-6082-140-A
9-1-2.
Connecting the equipments
Unless specified otherwise, connect the measuring instruments
as shown in Fig. 9-1 and perform the adjustments.
¢ Camera/video power switch ---+++++ Position of the video
e Input/output switchover switch
s+eoneeeeee Input position (Record mode)
Output position (Playback mode)
e Connect the adjusting remote control unit to the remote
terminal (LJ-9 board J971).
Patter generator
Video output (75 2)
TV monitor
Connect during
recording
Connect during
Video input/output
playback
terminal (J901)
Regulated
power supply
6.3 + 0.1 Vde
To connect the pattern generator and TV monitor
simultaneously, adjust the input/output switchover switch to
the [input] position, and connect the pattern generator to the
video input/output terminal.
Connect the TV monitor as follows.
VS-93 board
CN101 ]
|
VIDEO GND
VIDEO OUT
|
Seen
== 222 >
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