Sony GV-A500E, Service Manual

Page: 80 / 127

5-21
3. Bit value discrimination
Bit values must be discriminated using the display data of the
adjustment remote commander for the following items. Us the table
below to discriminate if the bit value is “1” or “0”.
(Example) If the remote commander display is “8E”, bit value
from bit 7 to bit 4 can be discriminated from the
column
A
, and those from bit 3 to bit 0 from column
B
.
Page
Address
bit3 to bit0 discrimination
bit7 to bit4 discrimination
Display on the adjustment remote commander
Display on the
adjustment
remote
commander
0
1
2
3
4
5
6
7
8
9
A ( A )
B ( b )
C ( C )
D ( d )
E ( E )
F (
F
)
Bit values
bit3
or
bit7
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
bit2
or
bit6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
bit1
or
bit5
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
bit0
or
bit4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
A
B
4. Input/output selection check
Page 3 Address 16
Using method:
1)
Select page: 3, address: 16.
2) By discriminating the bit value of the display data, the state of
the input/output selection can be discriminated.
Bit
0
1
2
3
4
5
6
7
Function
Not S video terminal input
Not video terminal input
Audio terminal monaural
When bit value = 1
Monaural
When bit value = 0
S video terminal input
Video terminal input