Sony DVP-F21 Service Manual page 60

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Submenu
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.
Normally, all items are checked successively one after another
automatically unless an error is found.
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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
(IC107) 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 (IC107) 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.
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(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.
DVP-F21 UC
MX
CE1
CE2
GA
AU
CN
(2-5) Region
Region code is displayed.
Error: Not detected.
The region code determined from the model code is
displayed.
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
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0x00 to 0xFF of the EEPROM and then read for
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checking. Before writing, the data are saved, then after
checking, they are written to restore the contents of
EEPROM.
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
address 0x602 of the Servo DSP and then read for
checking.
Also, OPT type "1 LASER" or "2 LASER" is displayed.
(4-3) DSP Driver Test
Test signal data → DSP Driver
Error: Not detected.
Caution: Do not perform this checking with the mechanical deck
connected.
The maximum voltage is applied to the Servo Driver IC
(IC401). If the mechanical deck is connected, it will be
destroyed immediately. Following the output message,
disconnect the mechanical deck, then enter the
specified 4- or 5-digit value from the commander, and
[ENTER]
press the
the entered value accords. To exit the test, check the
output level, then press
This check is not conducted, but skipped in "All" menu
co
item.
.
6-2
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Model Type
5 0
5 2
5 3
5 4
5 7
5 a
5 c
0 5 8 2 9 9 4 2 8
key. The test is conducted only if
m
[NEXT]
key.
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