7-2
3. Checking S Video Output S-Y
<Purpose>
Check S-terminal video output. If it is incorrect, pictures will not
be displayed correctly in spite of connection to the TV with a S-
terminal cable.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
S VIDEO OUT (S-Y) connector
(75
Ω
terminated)
Instrument
Oscilloscope
Specification
1.00
±
0.05 Vp-p
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the S-Y level is 1.00
±
0.05 Vp-p.
Figure 7-3
4. Checking S Video Output S-C
<Purpose>
This checks whether the S-C satisfies the NTSC/PAL Standard. If
it is not correct, the colors will be too dark or light.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
S VIDEO OUT (S-C) connector
(75
Ω
terminated)
Instrument
Oscilloscope
Specification
A = 286
±
30 mVp-p (NTSC)
A = 300
±
100 mVp-p (PAL)
Checking method:
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Confirm that the S-C burst is “A”.
Figure 7-4
7-2. ADJUSTMENT OF VIDEO SYSTEM
1. Composite Video Level Adjustment
(MB-107 BOARD)
<Purpose>
This adjustment is made to satisfy the NTSC standard, and if not
adjusted correctly, the brightness will be too large or small.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
VIDEO OUT connector
(75
Ω
terminated)
Instrument
Oscilloscope
Adjusting element
RV601
Specification
1.00 Vp-p
Adjusting method:
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Adjust the RV601 to attain 1.00 Vp-p.
Figure 7-1
2. Component Video Level Adjustment
(MB-107 BOARD)
<Purpose>
This adjustments component video output. If it is incorrect, cor-
rect brightness will not be attained when connected to, for instance,
projector.
Mode
Video level adjustment in test mode
Signal
Color bars
Test point
COMPONENT VIDEO OUT (Y)
connector (75
Ω
terminated)
Instrument
Oscilloscope
Adjusting element
RV602
Specification
1.00
Vp-p
Adjusting method:
1) In the test mode initial menu “6” Video Level Adjustment, set
so that color bars are generated.
2) Adjust the RV602 to attain 1.00
Vp-p
Figure 7-2
+0.04
–0.02
A
+ 0.04
– 0.02
1.00 Vp-p
+0.04
–0.02
1.00
±
0.05 Vp-p
+ 0.04
– 0.02
+ 0.04
– 0.02
1.00
Vp-p
+ 0.04
– 0.02