Sony DVP-F5 Service Manual page 80

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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.
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
(IC004) is displayed with four digits.
(2-3) ROM Check Sum
Check sum is calculated.
Error : Not detected.
The data are added of ROM (IC004) 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 is displayed with 2-digit hexadecimal
TE
L 13942296513
number.
DVP-FX1
DVP-F5
(2-5) Region
Region code is displayed.
Error : Not detected.
The region code determined from the model code is
displayed.
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Model type
9
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3. Peripheral
(3-2) EEPROM Check
Data write → read, and accord check
Error 03 : EEPROM write/read discord.
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
(4-3) DSP Driver Test
Test signal data → DSP Driver
Error : Not detected.
5. Supply
Caution : Do not conduct this check with a mechanical deck
connected.
An access is made to the stream supply and servo control
IC (IC602) and external RAM (IC603) using check data.
If mechanical deck is connected, the motor and optics
could be damaged. This check is also executed by the
"All" menu item.
Supplement : How to disconnect mechanical deck
Disconnect flexible flat cables connected to the
CN801, CN802, CN803 and CN804 of MB-90 board.
(5-2) ARP Register Check
Data write → read, and accord check
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3 6 7
Error 08 : ARP register write, and read data discord.
(5-3) ARP to RAM Data Bus
Data write → read, and accord check
1
Error 09 : ←→ RAM data bus error
1
Data 0x0001 to 0x8000 where one bit each is set to 1 are
written to the address 0 of RAM (IC603) connected to the
ARP (IC602) through the bus, then they are read and
checked. In case of discord, written bit pattern and read
data are displayed. If data where multiple bits are 1 are
read, the bits concerned may touch each other. Further, if
data where certain bit is always 1 or 0 regardless of written
data, the line could be disconnected or shorted.
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