E1_Av3; E2_Av3 - Philips DVDR75/001 Service Manual

8.3.4 Procedure B
1. Note the serial number of the set example:
VN050136130156
– VN = production centre (VN....Szekesfehervar).
According to UAW-500: V=22 and N=14
– 05 = change code (this is not used for this calculation)
– 01 = YEAR
– 36 = Production WEEK
– 130156 = 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 the formula below:35828*YEAR + 676*
WEEK + 26*A + H + 8788 The figures are fixed, YEAR +
WEEK + factory code ( A + H) are variable Example:
35828*01+676*36+26*1+8+8788 = 68986 (decimal) Then
we translate the decimal number to a hexadecimal number.
example: 68986 (decimal)= 10D7A (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: 130156 (decimal) =
1FC6C (hex)
5. Program new digital board via nucleus 410 (Empress) or
1207 (Chrysalis). Therefore we use the 10 hexadecimal
numbers we calculated above:
example:
DD:> 410 10D7A1FC6C
or DD:>1207 10D7A1FC6C
41000: Test OK @
The set has now its original unique number
8.4 Adjustment DVIO 1.8 PCB
This adjustment sets the free running frequency of the VCO of
the audio PLL. It should be carried out after replacement of IC
7604.
1. Disconnect DVD+RW set from the mains.
2. Plug DVIO1.8 board via edge-connector onto Digital Board
(DVIO board is vertically oriented, so that both sides of the
PCB are accessible for measurements).
3. Connect DVD+RW set to the mains.
4. Turn DVD+RW set on and select any video input source
except the DV input.
5. Check the signal at test point F611 with an oscilloscope.
The signal should be 5V digital with 50% duty-cycle.
6. Measure the frequency of the signal at test point F610 and
adjust the potentiometer 3605 to get a frequency of
12.288MHz 50kHz (after removing the screwdriver from
the potentiometer).
– In case the frequency can not be increased sufficiently,
replace capacitor 2618 by NP0-type capacitor with
18pF. Adjust afterwards again the frequency with the
potentiometer.
– In case the frequency can not be decreased
sufficiently, add (3pF-10pF) trim-capacitor in parallel to
capacitor 2618 or replace capacitor 2618 by NP0-type
capacitor with 27pF.Adjust afterwards again the
frequency with the potentiometer (and/or trim-
capacitor).
7. Switch DVD+RW set to Stand-by mode.
8. Disconnect the DVD+RW set from the mains.
9. Plug DVIO1.8 board directly (without edge connector) onto
Digital Board.
10. Connect DVD+RW set to the mains.
11. Connect a DV-source that transmits DV-video data with
audio to the DVD+RW set.
12. Turn DVD+RW set on, select DV input, and switch
DVD+RW set appropriately to output the decoded signal.
Audio should be output without distortion.
Alignments DVDR70 & DVDR75/0x1
8.5 Alignments after replacing the Boot EEPROM
7810 in sets with Digital Board Chrysalis
The NVM, item 7810, on the Digitalt Board Chrysalis contains
the "Diversity String" that tells the software during startup which
hardware version is present.
The setting is stored in the NVM during the production of the
Digital Board Chrysalis
In case of a fault the NVM must be replaced by a programmed
device containing the boot script.
Via the Diagnostic Software the Diversity String is stored with
command 1226, followed by the Diversity String as parameter.
The diversity strings used in DVDR70/0x1 and DVDR75/0x1
are the following:
Chrysalis
Board
Type
E1 44424849A8E920014531000000000000230303000
00101020100000020040000
E1_AV3 444248492721200145315F4156330000320303000
0101020001000020040000
E2 44424849BAE92001453200000000000024030300
000000020100000020040000
E2_AV3 444248493921200145325F4156330000330303000
0000020001000020040000
Example:
DD:> 1226 44424849A8E920014531000000000000230303
00000101020100000020040000
122600
Test OK @
E1 ...Digital Board Chrysalis version Euro 1 (with DV input) for
DVDR75/0x1 with Basic Engine VAE8020.
E1_AV3...Digital Board Chrysalis version Euro 1 (with DV
input) for DVDR75/0x1 with Basic Engine VAD8031.
E2 ...Digital Board Chrysalis version Euro 2 (without DV
input) for DVDR70/0x1 with Basic Engine VAE8020.
E2_AV3...Digital Board Chrysalis version Euro 2 (without DV
input) for DVDR70/0x1 with Basic Engine VAD8031.
With command 1228 the settings can be displayed.
8.
String
EN 169