Table of Contents
Advertisement
9-5. SERVO SYSTEM ADJUSTMENTS
1.
Switching position adjustment (VS-99 board)
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
Order
2
3
4
5
6
7
CH1
CH2
CH1
Page
1
D
D
D
D
D
J
Playback
Alignment tape:
For adjusting tracking(WR5-l CP)
..
CH1: @of CN002 (RF SWP)
I ••
• •
••••w•••••••••••••~••••••• ··~ •••• ' •
CH2: @of CN002 (PB RF)
Oscilloscope
D
04 (SW POSITION (LOW))
05 (SW POSITION (HIGH))
ti=O
±
10 j.Lsec.
Address
Data
Procedure
00
01
Releasing of protect.
05
80
Initial setting.
05
Change the data with the PLAY and STOP buttons, and
minimize tl.
05
Press the PAUSE button.
04
Change the data with the PLAY and STOP buttons, and
minimize tl.
04
Press the PAUSE button.
Check that tl satisfies the specified value.
If not, repeat steps 3 to 7 in order.
I
./5
Eola<1Jemeot
--jt1~
CH2
Fig. 9-5.
-228-
Conditions
Playback mode
Playback mode
9-6. VIDEO ADJUSTMENTS
Basically, the video system must be adjusted according to the
following adjustment procedures.
The color video signal supplied from the pattern generator is used
as the video input signal for adjusting the video system in the
recording mode. Check that the sync signal and the color burst
signal satisfy the standards specified for the set-ups for
adjustments shown in Fig. 9-2.
[Adjusting procedure)
1)
Playback frequency characteristics adjustment
2)
Flying erase check
3)
VXO
oscillation frequency check
4)
EE level adjustment
5)
IR adjustment
6)
Chroma comb filter adjustment
7)
Emphasis input level adjustment
8)
PB Y level adjustment
9)
PB line out level adjustment
10) Y
FM deviation adjustment
11) Y carrier frequency adjustment
12) Chroma emphasis fo adjustment
13) REC Y level adjustment
14) REC C level adjustment
15) REC ATF level check
16) RECAFMlevelcheck
17) Chroma comb filter fine adjustment
-229-
Advertisement
Table of Contents
