PT-VW350, PT-VW350D, PT-VW350T, PT-VX420, PT-VX420D, PT-VX420T, PT-VX421 (serv.man4) - Panasonic Projector Service Manual (repair manual). Page 61

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ADJ-5
SECTION 3 ADJUSTMENTS
1. 3. EEPROM data transfer
1. 3. 1. Required equipment
1. PC : Use for backup data transfer
2. Communication cable : D-sub 9pin (male/female RS-232C straight)
3. Software : NVReadWrite.exe software (EEPROM data transfer software)
  (Download from the projector service homepage.)
1. 3. 2. Preparation
1.  Move the folder "NVReadWrite" to your favorite directly on your Computer. There are files in the NVReadWrite folder as 
shown below .
  - NVReadWrite.exe 
EEPROM data reading and writing software
  - NVReadWrite.ini 
Setting file
  - xxxx_UserSettingDataReadCmd.txt *1 
 User setting data read out command file specified with every projector. 
  - NVReadWrite.pdf 
Instruction Manual (English)
  - NVReadWriteJ.pdf 
Instruction Manual (Japanese)
 *1  "xxxx" is specified with the projector's model name 
(development code). This file is needed for every 
projector.
2.  Take a memo of Baudrate and Parity set in the projec-
tor.
3.  Connect the serial terminal pf projector and PC with an 
RS-232C cable.
[Note]  Setup the projector not to enter the standby mode 
or shutdown mode during the working.
Communication cable (straight)
D-Sub 9p (Male)
D-Sub 9p (Female)
Projector Connection terminals
Computer
1. 3. 3. Starting the software
 Double click the icon of software [NVReadWrite.exe] in the folder 
of "NVReadWrite" on your computer. The software starts and the 
setting window appears.
[Log Window]
   Displays the serial commands logs when the [Read All Data] or 
[Read User Setting Data] button is pressed.
[Model Name]
  The development code for the projector
  *  This will be acquired from the projector and displayed when 
the [Read Write mode ON] button is pressed
[EEPROM Size]
  The EEPROM size on the projector
    This will be acquired from the projector and displayed when 
the [Read Write mode ON] button is pressed
[Read Write mode ON]
  Projector sets into the EEPROM Read Write mode when this 
button is pressed.
  * The EEPROM Read Write mode is disabled in the default.
[Read All Data]
  Reads out all the data in the EEPROM when this button is 
pressed.
  * This function is enabled in the Read Write mode ON.
  [One Line Size]
  Read out unit of the EEPROM data [byte](Decimal number)
  EEPROM data is read out in the unit specified by this option.
[Read User Setting Data]
  Reads out the setting values set by the user.
  Specify the setting file (xxxx_UserSettingDataReadCmd.txt) defined by each model.
  * This function is enabled in the Read Write mode ON.
[Send Text File]
   Sends the projector the text data which is read out with the command button [Read All Data] or [Read User Setting Data]
[Clear Log]
  Clear the received logs on the window.
[Exit]
  Quits the [NVReadWrite]
Log Window
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