Philips DVDR3575H/, Service Manual

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2. Alignments & Test Procedures
Replacing the Digital Board
When the defective Digital Board is to be replaced with a new board, the following settings should be restored.
•
Slash information (or slash version)
•
IEEE Unique number (or DV ID)
•
Hard Ware Diversity String (or Hardware ID)
The slash version, IEEE Unique number, and the Hardware ID are set at the end of the production line of the
set.
The “Diversity String” tells the software during startup which hardware version is present.
In a new Digital Board, the non-volatile memory, the NVM, is an empty device. After replacement the set can
only startup in Diagnostic software mode because the Slash version and Hardware ID is not initialized properly.
By way of commands via the Diagnostic Software (DS) and hyperterminal connection to the PC, these factory
settings must be restored into the NVM.
2.1.1. Slash Version
The slash version is stored with DS command 1217 followed by the slash version as parameter.
The slash versions used in DVDR3575H, DVDR3577H, DVDR3595H and DVDR3597H are as follows:
•
DVDR3575H & DVDR3577H/31 11621
•
DVDR3577H/51 11622
•
DVDR3575H & DVDR3577H/58 11623
•
DVDR3575H & DVDR3577H/05 11624
•
DVDR3595H & DVDR3597H/31 11625
•
DVDR3595H/51 11626
•
DVDR3595H & DVDR3597H/58 11627
•
DVDR3595H & DVDR3597H/05 11628
Example:
DS:> 1217 11621
121700:
Test OK@
With DS command 1218 the slash version can be displayed
2.1.2. IEEE Unique Number
1. Note the serial number of the set example:
VN19 0650 100070
- VN = production center (VN….Szekesfehervar).
According to UAW-500: V=22 and N=14 (A = 1, B = 2, C =3, etc)
-
19 = change code (this is not used for this calculation)
-
06 = YEAR
- 50 = Production WEEK
- 100070 = Lot and SERIAL number
2. Calculate the unique number: this number always exists out of 10 hexadecimal numbers
3. First 5 numbers: First we calculate a decimal number according to formula below:
- 35828*YEAR + 676*WEEK + 26*V +N + 8788
- The figures are fixed, YEAR, WEEK and production center codes V, N are variables
- Example: 35828*06 + 676*50 + 26*22 + 14 + 8788 = 258142 (decimal)
-
Then we translate this decimal number to a hexadecimal number.
-
Example: 258142 = 3F05E (hex)
4. Last 5 numbers: The last 5 numbers exist out of the Lot and SERIAL number.
We have to translate the decimal number to the next 5 hexadecimal numbers:
Example: 100070 (decimal) = 186E6 (hex)
5.
This IEEE Unique number (10-digit hexadecimal number) is stored with DS command 1207.
Example:
DS:>1207 3F05E186E6
120700:
Test OK@