Sony AVD-S10 Service Manual page 12

AVD-S10
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3-9. Syscon Diagnosis
The same contents as board detail check by serial interface can be
checked from the remote commander.
On the Test Mode Menu screen, press the 0 "R" key on the remote
commander, and the following check menu will be displayed.
### Syscon Diagnosis ###
Check Menu
0. Quit
1. All
2. Version
3. Peripheral
4. Servo
5. Supply
6. AV Decoder
7. Video
8. Audio
9. DSD Decoder
_
0. Quit
Quit the Syscon Diagnosis and return to the Test Mode Menu.
1. All
All items continuous check
This menu checks all diagnostic items continuously. Normally, all
items are checked successively one after another automatically
unless an error is found, but at a certain item that requires judgment
through a visual check to the result, the following screen is displayed
for the key entry.
TE
### Syscon Diagnosis ###
L 13942296513
Diag All Check
No. 2 Version
2-3. ROM Check Sum
Check Sum = 2005
Press NEXT Key to Continue
Press PREV Key to Repeat
_
For the ROM Check, the check sum calculated by the Syscon is
output, and therefore you must compare it with the specified value
for confirmation.
Following the message, press the > "R" key to go to the next
item, or . "R" key to repeat the same check again. To quit the
diagnosis and return to the Check Menu screen, press the x "R" or
ENTER "R" key. If an error occurred, the diagnosis is suspended
and the error code is displayed as shown below.
### Syscon Diagnosis ###
3-3. EEPROM Check
Error 03: EEPROM Write/Reed N
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Address : 00000001
Write Data : 2492
Read Data : 2490
Press NEXT Key to Continue
Press PREV Key to Repeat
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_
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Press the x "R" key to quit the diagnosis, or . "R" key to
repeat the same item where an error occurred, or > "R" key to
continue the check from the item next to faulty item.
Selecting 2 and subsequent items calls the submenu screen of each
item.
For example, if "5. Supply" is selected, the following submenu will
be displayed.
### Syscon Diagnosis ###
Check Menu
No. 5 Supply
0. Quit
1. All
2. ARP Register Check
3. ARP to RAM Data Bus
4. ARP to RAM Address Bus
5. ARP RAM Check
_
0. Quit
Quit the submenu and return to the main menu.
1. All
All submenu items continuous check
This menu checks 2 and subsequent items successively. At the item
where visual check is required for judgment or an error occurred,
the checking is suspended and the message is output for key entry.
Q Q
Normally, all items are checked successively one after another
3 6 7 1 3 1 5
automatically unless an error is found.
Selecting 2 and subsequent items executes respective menus and
outputs the results.
For the contents of each submenu, see "Check Items List".
General Description of Checking Method
2. Version
(2-2) Revision
ROM revision number is displayed.
Error: Not detected.
The revision number defined in the source file of ROM
(IC108) is displayed with four digits.
(2-3) ROM Check Sum
Check sum is calculated.
Error: Not detected.
The 8-bit data are added at addresses 0x000F0000 ~
0x002EFFFF of ROM (IC108) and the result is displayed
with 4-digit hexadecimal number. Error is not detected.
Compare the result with the specified value.
(2-4) Model Type
Model code is displayed.
Error: Not detected.
The model code read from EEPROM (IC101) is displayed
with 2-digit hexadecimal number.
(2-5) Region
co
Region code is displayed.
Error: Not detected.
.
The region code determined from the model code is displayed.
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0 5 8 2 9 9 4 2 8
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