Memory - Sony VPL-VW50 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
External NVM : 16Kbyte, 256kbyte EEPROM
Set Memory
Status
No.01
Memory
No.02
No.03
No.04
...
No.99
Noinput
NTSC3.58
NTSC4.43
PAL
Video
PALM
Chroma
PALN
Memory
SECAM
BW60
BW50
PAL60
1-22
CPU
External NVM
Memory
Active memory copy
Set Memory
Status
Memory
Video
Chroma
Memory
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.
CPU RAM
Set Memory
No.01
Status Memory
No.02
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
Noinput
Video Chroma Memory
NTSC3.58
NTSC4.43
PAL
PALM
PALN
SECAM
BW60
BW50
PAL60
VPL-VW50