Sony VPL-HS50, Service Manual

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1-23
VPL-HS50/HS51
Gamma memory is actualized through Gamma mode
functions’offsetting the output values to the Contrast and
Brightness devices.
When the power plug is connected to the power line
(Standby status), all data inside the internal ROM are
written into the NVM (Nonvolatile Memory). When the
power is turned to on, required data for the current picture,
such as status memory data, etc., are selected, and they 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
factory mode), then stored them.
Adjustable items (W/B and Device Adjust) of the factory
mode are memorized into the NVM by the memory
operation. At the same time, the factory preset (adjusted)
data are all eliminated from the memory.
1-8. Memory
Memory structure consists of the following five memory
blocks.
1. Set memory
2. Status memory
3. Chroma memory
4. W/B memory
5. Channel memory
6. Image Flip memory
7. Picture memory
8. RCP memory
9. Fan memory
CPU internal ROM : 512 kbyte Flash Memory
CPU internal ROM : 32 kbyte
External NVM memory : 8 kbyte EEPROM
Computer
High
Low
Computer
Middle
High
Low
Middle
High
Low
Middle
High
Low
Middle
Custom1
Custom3
Custom2
Custom1
Custom3
Custom2
Custom1
Custom3
Custom2
Custom1
Custom3
Custom2
Others Others
W/B
Memory
High
Low
Middle
Custom1
Custom3
Custom2
No.02
No.03
No.04
...
No.99
No.01
Status
Memory
No.01
No.02
No.03
No.04
...
No.99
Status
Memory
Set Memory Set Memory Set Memory
Status Memory
Chroma Memory
Input-A
Preset
No.03
No.04
...
No.99
Component
Preset
No.101
...
No.120
Input-A
User
No.03
No.04
...
No.99
HDMI
Preset
W/B
Memory W/B
Memory
NT358/443/BW60
PAL/PAL-M/N/
SECAM/BW50
15k RGB
Component (15k)
HDTV (YPbPr)
NT358/443/BW60
PAL/PAL-M/N/
SECAM/BW50
15k RGB
Component (15k)
Two times speed
Component Two times speed
Component
HDTV (YPbPr)
HDTV(GBR)
(Include two times speed) HDTV(GBR)
(Include two times speed)
Chroma
Memory Chroma
Memory
CPU ROM
External NVM
CPU RAM
Initialize
Active memory copy
Memory