Normally, all items are checked successively one after another au-4. Servo
tomatically unless an error is found.(4-2) Servo DSP Check
Selecting 2 and subsequent items executes respectiveData write menus and? read, and accord check
outputs the results.Error 12: Read data discord
For the contents of each submenu, see OCheck Items List�.Data 0x9249, 0x2942, 0x4294 are written to the address
0x602 of RAM in the Servo DSP (IC701), then read and
General Description of Checking Methodchecked.
2. Version(4-3) DSP Driver Test
(2-2) RevisionTest signal da? DSP Drita ver
ROM revision number is displayed.Error: Not detected.
Error: Not detected.
The revision number defined in the source file of ROMCaution:Do not conduct this test with a mechanical deck
(IC206) is displayed with four digits.connected.
(2-3) ROM Check SumThe maximum voltage is applied to the Servo Driver IC
Check sum is calculated.(IC801, IC802). If mechanical deck is connected, the mo-
Error: Not detected.tor and optics could be damaged. Disconnect mechanical
The 8-bit data are added at addresses 0x000F0000 ~deck following the output message, then enter specified 4-
0x002EFFFF of ROM (IC206) and the result is displayedor 5-digit number from the remote commander, and press
with 4-digit hexadecimal number. Error is not detectedthe [ENTER].. The test is conducted only when the input
Compare the result with the specified value.data accord. Check the output level, then press the [NEXT]
to finish the test.
(2-4) Model TypeThis test is skipped if OAll� is selected.
Model code is displayed.
Error: Not detected.Supplement: How to disconnect mechanical deck
The model code read from EEPROM (IC201) is displayedDisconnect flat cables connected to the CN002
with 2-digit hexadecimal number.and CN003 of MB-85 board. Also, disconnect
harness from the CN011.
Model Type
DVP-S525D235. Supply
Caution: Do not conduct this check with a mechanical deck con-
DVP-S725D43nected.
An access is made to the stream supply and servo con-
(2-5) Regiontrol IC (IC303) and external RAM (IC304) using check
Region code is displayed.data. If mechanical deck is connected, the motor and
Error: Not detected.optics could be damaged. This check is also executed by
The region code determined from the model code is dis-the OAll� menu item.
played.
Supplement: How to disconnect mechanical deck
3. PeripheralDisconnect flat cables connected to the CN002 and
(3-2) Gate Array CheckCN003 of MB-85 board. Also, disconnect harness
Data write ? read, and accord checkfrom the CN011.
Error 02: Gate array write/read discord
Data 0x00~0xFF are written to the address 0xF of GA(5-2) ARP Register Check
(IC601), then read and checked if they accord.Data write ? read, and accord check
Error 08: ARP register write, and read data discord
(3-3) EEPROM CheckData 0x00 to 0xFF are written to the TMAX register (ad-
Data write ? read, and accord checkdress 0xC6) in ARP (IC303), then they are read and checked.
Error 03: EEPROM write/read discord
Data 0x9249, 0x2942, 0x4294 are written to addresses(5-3) ARP to RAM Data Bus
0x00~0xFF of EEPROM (IC201), then read and checkData write ed.? read, and accord check
Before writing, the data are saved, then after checErrkingor 09:, the ARP ??y RAM data bus error
are written to restore the contents of EEPROM.Data 0x0001 to 0x8000 where one bit each is set to 1 are
written to the address 0 of RAM (IC304) connected to the
(3-4) NAND Flash CheckARP (IC303) through the bus, then they are read and
Data clear ? write ? read, and accord checkchecked. In case of discord, written bit pattern and read
This check is conducted to the DVP-S725D only.data are displayed. If data where multiple bits are 1 are
Error 04: Clear errorread, the bits concerned may touch each other. Further, if
05: Write errordata where certain bit is always 1 or 0 regardless of written
06: Read data discorddata, the line could be disconnected or shorted.
21: Faulty blocks exceed 10
The data clear, write, read, and check are executed to the
block 0 of Flash memory (IC602).
In case of a faulty block, its address is displayed.
An error is output if faulty blocks exceed 10.
6-2 |
ACEC
SONY
