Sony DVP-NS705V Service Manual page 35

Submenu
Selecting 2 and subsequent items calls the submenu screen of each
item.
Indication of "–" in the submenu means the check is not supported
with the model.
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.
Normally, all items are checked successively one after another au-
tomatically unless an error is found.
Selecting 2 and subsequent items executes respective menus and
outputs the results.
For the contents of each submenu, see "General Description of
Checking Method" and "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
(IC106 or 107) is displayed with four digits.
(2-3) ROM Check Sum
Check sum is calculated.
Error: Not detected.
8-bit data are added up to the ROM (IC106 or 107) address
0x000F0000 to 0x002EFFFF, 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 the EEPROM is displayed with
2-digit hexadecimal number.
(2-5) Region
Region code is displayed.
Error: Not detected.
The region code determined from the model code is dis-
played.
(2-6) Mount resistance confirmation check
Error 22: region code discord.
Accordance between region codes, one is detected with
model resistance and destination resistance, and the other
is detected with region resistance, is check.
If an error is detected, the region code determined with re-
gion resistance is displayed at "write data" and the region
code determined with model resistance and destination re-
sistance is displayed at "read data".
3. Peripheral
(3-2) EEPROM Check
Data write → read, and accord check
Error 03: EEPROM write/read discord.
0x9249, 0x2942 and 0x4294 are written to the address 0x00
to 0xFF of the EEPROM and then read for checking. Be-
fore writing, the data are saved, then after checking, they
are written to restore the contents of EEPROM.
(3-5) SACD check
Device reset → internal organs RAM check
Error 50: Write and read data discord.
(3-6) Venc Check (NS755V/NS915V)
Data write → read, and accord check
Error 52: Write and read data discord.
Accessing to the SYSCON may be defective.
(3-7) ––––––– (not support)
(3-8) External RAM Check
Test Data write → read, and accord check
Error 02: The external RAM used in the system control is
checked.
4. Servo
(4-2) Servo DSP Check
Data write → read, and accord check
Error 12: Read data discord
0x9249, 0x2942 and 0x4294 are written to the RAM ad-
dress 0x602 of the Servo DSP and then read for checking.
Also, OPT type "1 LASER" or "2 LASER" is displayed.
(4-3) Check is not supported.
(4-4) RF Amp Register Check
Date write → read and accord check
Error 13: RF Amp resister write, and read data discord.
After 0x01 is shifted to register which can read and write
RF Amp for 8 bit operation, if write and read data are dis-
cord once, the check is performed unsuccessfully.
There may be a single piece of hardware is defective,
mounted imperfect or not mounted.
6-2