EN 1468.720/0xAlignmentsHDRW
Figure 8-1
8.2Reprogramming Procedure of NVM on the 8.2.3 Slash Version
Microprocessor Sub PCB
The slash version is with command 1217, fstored ollowed by
the slash version as parameter.
The NVM, item 7808,he Microprocessor Sub board on t
The slash versions used in HDRW720 are the following:
contains the following factory settings:
"HDRW720/00/02: 74
1. Clock correction factor
"HDRW720/05: 75
2. AFC reference value
Example:
3. Slash version
DD:>1217 74
The settings 1,2 and 3 are stored in the NVM during the
production of the analogue board.Reset of Slash Version
The slash version is stored the end o at f the production line of Use command 1115 to reset the analogue board to the default
the set.setting.
In case of failure, the NVM must be replaced by an empty Procedure:
device. By way of commands a thvie Diagnostic Software or via "Put the set in DSW command mode
ComPair, the factory settings must be restored in the NVM."Execute command 1115 with the following parameters:
DD:> 1115 w 0xAE 2 0xD0 0x00
"Leave the DSW command mode and start up the set in
8.2.1 Clock Correction Adjustment
application mode
No background is visible on the TV screen. The analogue
To guarantee an exact functio the real time clock, an n of
board is ready to accept the appropriate slash version
adjustment of the clock frequency is possibe. The adjustment
value is stored in the NVM.
Procedure:8.3Rework Procedure IEEE Unique Number
?put the set in service command mode
"execute command 1117 to initiate that a signal with 32768
8.3.1 Scope:
Hz is available on pin 3 of connector 1988
example:
The procedure describes how to upgrade sets with a unique
DD:>1117
number after repair. Tque number is storedhis uni in the
"measure the frequency fmeas the Cof lock Crystal with an
NVRAM (item 7809) of the digital board at the end of the
accuracy of 0.1 Hz.
production line.
"Calculate the parameter to be entered: 32768/fmeas * 106
This procedure is only valid or necessary when:
"Normally the parameter must be between 999902 and
"The digital board is replaced
1000097. If the parameter and therefore the frequency of
"NVRAM on the digital board is replaced
the crystal is outside this range, the crystal must be
"NVRAM is cleared
replaced.
In all other cases the repaired set retains its unique number.
"Execute command 1118 with the parameter as input
The procedure defines several means to re-assure the unique
example:
number depending on the possibilities of repair or the state the
DD:>1118 1000023
faulty set is in.
8.2.2 AFC Reference Voltage Tuner
8.3.2 Handling:
This function stores the reference voltage for the tuner in the
State of original (defective) board:
NVM. Before this value can be stored, the AFC adjustment,
1. The digital board starts up in Diagnostics Mode: follow
described in the adjustment instructions of the analogue board,
procedure A to retrieve the valid unique number
must be carried out.
2. The digital board does NOT start up in Diagnostics Mode:
Procedure:
follow procedure B.
"Adjust AFC circuit
"Calculate the reference value
8.3.3 Procedure A
"Execute command 1119 and use the calculated reference
value as parameter example: DD:>1119 128
1. Connect defective digital board to PC via serial cable (3122
785 90017)
2. start up hyper terminal or ay other serial nterminal via the
correct settings (DSW command mode interface)
3. read out existing unique number via nucleus 1208
example:
DD:> 1208
120800: DV Unique ID = 00D7A1FC6C Test OK @
4. note read out
5. program new digital board via nucleus 1207
example:
DD:> 1207 00D7A1FC6C 120700: Test OK @
The set has now the original unique number
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 |
ACEC
