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2-3. MD-117 Board Adjustment
2-3-5. B-Y Video Level Adjustment
2-3-6. R-Y/B-Y Carrier Balance Adjustment
2-3-5. B-Y Video Level Adjustment
Preparations :
. S1/MD-117 board → OFF
. S2/MD-117 board → ON
To be extended
: MD-117 board
Equipment
: Oscilloscope
Test point
: TP7/MD-117 board
GND
: E1/MD-117 board
Adjustment point : 1RV3 (B-Y LEVEL )/
MD-117 board
Specifications
: A : B = 3 : 4
(Tolerance of 1% or better)
2-8 (E)
2-3-6. R-Y/B-Y Carrier Balance Adjustment
Preparations :
. S1/MD-117 board → ON
. S2/MD-117 board → ON
To be extended
: MD-117 board
Equipment
: Oscilloscope
Test point
: TP10/MD-117 board
GND
: E1/MD-117 board
Adjustment points : 1RV5 (R-Y CARRIER BAL)/
MD-117 board
1RV6 (B-Y CARRIER BAL)/
MD-117 board
: Adjust 1RV5 and 1RV6 alternately
Specifications
so that the carrier is minimum.
10
9
TP7
RV6
8
TP6
RV5
7
TP5
6
5
4
TP4
3
TP9
2
TP2
TP3
RV1
1
TP1
F
E
G
MD-117 BOARD (A SIDE)
RV4
RV2
RV3
RV10
RV9
TP10
CN1
RV8
RV11
TP11
E2
RV7
TP8
E1
A
D
C
B
CA-755/755P
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