Led Check; Self Diagnosis Log Check; Record Of Use Check - Sony MVC-CD250 Service Manual

MVC-CD250/CD400

9. LED Check

Page 2
Using method:
1) Select page: 2, address: 04, set data: 02 and press PAUSE button.
2) Check that all LED are lit.
3) Select page: 2, address: 04, set data: 00 and press PAUSE button.

10. Self Diagnosis Log Check

Page 2
Address Initial value
B0 00 Last error occurrence code
B1 00
B2 00
Using method:
1) The self diagnosis log is displayed at page: 2, addresses: B0 to B2.
Note 1: When no error occurs in this unit, data "00" is written in addresses B0 to B2.
When the last error occurs, the data corresponding to the error is written in the address (B0 to B2).
Note 2: These data will be erased when the coin lithium battery (JK-224/225 board BT101) is removed (reset).

11. Record of Use Check

Page A
Address Function
AC Recording counter
AD (Hexadecimal)
AE
AF
Using method:
1) The recording counter data is displayed at page: A, addresses: AE to AF. These data are named D
2) Convert D and D
AE AF
(Refer to Table 5-2-2. "Hexadecimal-decimal conversion table".)
3) Calculate the recording counter (N) using following equation. (Decimal calculation)
N = D ' + D ' × 256
AF AE
Initializing method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: A, address: AC to AF, and write data: 00 to each address.
Note : Press the PAUSE button of the adjustment remote commander each time to set the data.
3) Select page: 0, address: 01, and set data: 00.
Address 04 Data 02
Address B0 to B2
Function
Address AC to AF
Remarks
Not used.
1000-digit and 100-digit
10-digit and 1-digit
to decimal notation, and obtain D
Example:
C : 32 : 01
Note: "C" → "01"
"E" → "03"
' and D '.
AE AF
5-50E 5-50
Address : B2
Address : B1
Address : B0 (Note)
and D respectively.
AE AF