Nokia 445PRO, Service Manual

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445N
16
3. Controlling the Memory for Picture Adjustments
The picture adjustment values are stored in non-volatile memory. The memory has separated areas
for User Adjustments and for Factory Adjustments.
3.1. Memory for User Adjustments
3.1.1. Adjustment
1 If there are values available in the memory for user adjustments, corresponding to the present
timing signals, they are always used.
2 New user made adjustments are stored to the memory for user adjustments.
3.1.2. Resetting the User made settings for geometry or image
3 User memory can be emptied from user made settings. Resetting affects only the timing
which is currently active . The reset function is inhibited if no corresponding factory preset dis-
play mode exists.
After resetting all picture properties are coming from memory for factory adjustments.
3.2. Memory for Factory Adjustments
3.2.1. Adjustment
4 Factory adjustments can be updated with service menu in service mode. If there is no location in
factory adjustment memory for display mode currently in use, the adjustment affects the memory
for user adjustments.
-- If the memory location mentioned in case 1 is empty, the picture adjustment values are read
from memory for factory adjustments. Factory adjustments, corresponding to the current display
mode, are transferred to user memory if any picture property is adjusted. After that the operation
is as in case 1.
Basic
Adjustments
1
4
3
4
The memory can be
updated with Service
menu in Service Mode
The memory can be
updated with User Menu
in User Mode
Initialization
Memory for
User
Adjustments
SMA IC402
Memory for
Factory
Adjustments
SMA IC402
Preset Recall
Storing
2
R
ef
er
to
the
chapt
er
”S
er
vi
ce
Mode”