Sony TRINITRON PVM-14L2 Service Manual page 24

5. Executing FACTORY LOAD
If the adjustment data is damaged or lost by some
reasons, you can restore the default factory adjustment
data by executing FACTORY LOAD as described
below.
Select the following sub menus from the Service Menu
in the order of : [SYSTEM] → [FACTORY...] →
[LOAD...] to read the default factory data. If the
default factory data is damaged or the ROM is re-
placed without executing FACTORY SAVE as
described in the following paragraph, you cannot
execute FACTORY LOAD.
6. Executing FACTORY SAVE
This operation is to write the FACTORY LOAD data
into the factory data area in the memory.
Select the following sub menus from the Service Menu
in the order of : [SYSTEM] → [MAINTENANCE ID]
and type 111. Then select the following sub menus
from the Service Menu in the order of : [ENGINEER]
→ [FACTORY SAVE] to write the factory data in the
memory. FACTORY SAVE is protected from miss
operation so that FACTORY SAVE cannot be execut-
ed unless MAINTENANCE ID is set.
2-2
FACTORY SET
If the following circuit board is replaced or the following
NVRAM on the respective board is replaced, perform the
following settings.
B board : IC450
1. Select the following sub menus from the Service Menu
in the order of : [SYSTEM] → [MAINTENANCE ID]
and type 111.
2. Select the following sub menus from the Service Menu
in the order of : [SYSTEM] → [MODEL INCH],
[SYSTEM] → [MODEL TYPE] and write the model
data of each model in the [MODEL TYPE] referring
to table 2-4.
3. If the NVRAM on the B board is replaced, select the
following sub menus from the Service Menu : [ENGI-
NEER] → [CLEAR NVM ON B] and write data.
4. If any IC on the B board is replaced, perform all
adjustment items of the [SIGNAL] menu and of the
[DEFLECTION] menu.
5. Upon completion of adjustment, select the menus
[ENGINEER] → [FACTORY SAVE] to save the
adjustment data.
PVM-14L2/20L2