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Controlling The Memory For Picture Adjustments - Nokia 447PRO Service Manual

Chassis 447r 17" high resolution colour monitor
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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
If there are values available in the memory for user adjustments, corresponding to the present
1
timing signals, they are always used.
New user made adjustments are stored to the memory for user adjustments.
2
3.1.2. Resetting the User made settings
User memory can be emptied from user made settings. Resetting affects only the timing
3
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
Factory adjustments can be updated with service menu in service mode. If there is no location in
4
factory adjustment memory for timings currently in use, the adjustment affects the memory for
user adjustments.
-
If the memory location mentioned in case
from memory for factory adjustments. Factory adjustments, corresponding to the current tim-
ings, are transferred to user memory if any picture property is adjusted. After that the operation
is as in case
.
1
Storing
Initialization
Memory for Basic
Adjustments,
NCE642
16
is empty, the picture adjustment values are read
1
The memory can be
updated with Service
menu in Service Mode
Memory for
Factory
Geometry
Adjustments
SMA IC203
4
4
447R
The memory can be
updated with User Menu
in User Mode
2
3
Preset
Memory for
Recall
User
Adjustments
image
SMA IC203
1

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