Bit Value Discrimination; Input/Output Check; Led, Lcd (Display Window) Check; Printer Led Check - Sony DCR-TRV820 Service Manual

3. Bit Value Discrimination

Bit values must be discriminated using the display data of the ad-
justment remote commander for the following items. Us the table
below to discriminate if the bit value is "1" or "0".
Display on the adjustment remote commander
Page
(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.

4. Input/output Check

Page 2 Address 49
Bit Function
0
1
2
3
4 MIC jack
5
6 AUDIO/VIDEO jack
7 S VIDEO jack
Using method:
1) Select page: 2, address: 49.
2) By discriminating the bit value of display data, the state of the
jack can be discriminated.

5. LED, LCD (Display Window) Check

Page 2 Address 05
Using method:
1) Select page: 2, address: 05, and set the bit value of Bit5 to "1".
2) Check that all LED are lit and all segments of LCD (display
window) are lit.
3) Select page: 2, address: 05, and set the bit value of Bit5 to "0".

6. PRINTER LED Check

Page 5 Address 01
Using method:
1) Select page: 5, address: 01, set data: 5A, and press the PAUSE
button of the adjustment remote commander.
2) Select page: 5, address: 00, set data: 01, and press the PAUSE
button.
3) Check that all PRINTER LED are lit.
4) Turn OFF the main power supply (8.4 V).
Address
bit3 to bit0 discrimination
bit7 to bit4 discrimination
When bit value = 1
MIC jack is used
AUDIO/VIDEO jack is used
Bit5
Data 5A
5-62
Display on the
bit3
adjustment
remote or
commander bit7
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
A 8 1
9 1
A ( A ) 1
B ( b ) 1
C ( C ) 1
D ( d ) 1
E ( E ) 1
B
F ( F ) 1
When bit value = 0
S VIDEO jack is used
Bit values
bit2 bit1 bit0
or or or
bit6 bit5 bit4
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1