PT-VW350, PT-VW350D, PT-VW350T, PT-VX420, PT-VX420D, PT-VX420T, PT-VX421 (serv.man4) - Panasonic Projector Service Manual (repair manual). Page 62

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ADJ-6
SECTION 3 ADJUSTMENTS
1.  Setup the projector to "Normal-Standby" mode (ON(G)/
STANDBY(R) indicator is Lighting in red).
2. Start up service software "NVReadWrite.exe" with a computer.
3. Selection of language
   The [NVReadWrite.exe] has 2 kinds of display language Eng-
lish or Japanese. Select your desired language with this menu. 
When you change the display language, close the software and 
restart the software to apply your selected language.
4. Port setting
   Setup the Port no. and Baud rate from the "Setting" -"Port Set-
ting" menu.  
1. 3. 4. Backup the EEPROM data (before replacing A-P.C.Board)
5. Read Write mode ON
   The EEPROM data reading out or writing down is prohibited in the normal standby mode. To read out or write down the 
EEPROM data, you need to set the projector into an exclusive mode of EEPROM Read Write by pressing the [Read Write 
mode ON] button.
   Each button (“Read All Data”, ”Read User Setting Data”, “Send Text File”, “Address, Size Read/Write”) for EEPROM data 
Read and Write is disabled with gray out if the Read Write mode is not on. When the Read Write mode is ON, All the but-
tons are enabled.
   When the Read Write mode is ON, the [NVReadWrite] will acquire the development code and the size information of the 
EEPROM from the projector connected to the computer and displays them on the window.
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