Memory - Sony VPL-VW70 Service Manual

1-7. Memory

Memory structure consists of the following memory
blocks.
1. Set memory
2. Status memory
3. Video memory
4. W/B memory
5. Channel memory
6. Installation memory
7. Picture memory
8. RCP memory
9. FAN memory
10. UF memory
11. LUT memory
External NVM (EEPROM) : 256 kbit
External NVM
Initialize : Reset the Data to default value
Set Memory
Status
No.01
Memory
No.02
No.03
No.04
No.99
1-22
When the power is turned on to the projector, all data
inside the internal ROM are written into the NVM (Non-
volatile Memory).
When the power is turned to on to the projector, required
data for the current picture, such as status memory data,
etc., are selected from the respective memory blocks, and
are written into the internal RAM. When adjustment is
carried out, adjustment data are written into the NVM
automatically (items on the user mode) or by the trigger of
memory operation (items on the service mode), then stored
them. Be careful that the factory preset (adjusted) data of
the user adjustable items are all eliminated from the
memory when user performs adjustment of the adjustable
items (W/B and Device Adjust) and the memory operation
to memorize the user adjustment data into the NVM.
* When the power to the projector is turned off without memorizing the
adjustment data, the original factory preset (adjusted) data can be restored
by removing the power cord once and connect it back again.
External NVM
Memory : Save the Data from
Active memory copy : Load the Data from NVM to CPU RAM
Set Memory
No.01
Status
No.02
Memory
No.03
No.04
No.99
No.101
No.120
No.03
No.04
No.99
No.03
No.04
No.99
No.03
No.04
No.99
CPU RAM
CPU RAM to NVM
Set Memory
Status Memory
VPL-VW70