Eeprom Data Backup And Write - Hitachi DZ-GX20MA Service Manual

Troubleshooting > Special Functions

4-9-2 EEPROM data backup and write

(1) Application
Perform this work whenever you replace the MAN circuit board on which the EEPROM is mounted.
Create a backup file of the data in EEPROM to be replaced in a PC, and write the backup file to
new EEPROM: Some adjustment items that are performed after replacement can be omitted.
Refer to "6-3-2 List of Adjustments Needed After Replacing Major Components" for adjustment
items that can be omitted.
Information:
It may be impossible to back up the data in EEPROM to be replaced, depending on the status of
fault: In such a case, replace the MAN circuit board, and then perform "6-4-1 Initial Data Write".
(2) Preparations
1) Open the LCD monitor. Insert a fine-tipped flat-bladed screwdriver into the groove in adjustment
cover, and remove the cover from L case in the direction of the arrow: Be very careful not to
scratch the cover or L case with screwdriver
2) Connect the DVD video camera/recorder, jig/tool and power supply as shown in Fig. 4-9-2.
Refer to "6-1-1 List of Jigs and Tools used when Creating Reference Data" for details on jig/tool
and power supply in the figure.
3) Copy the adjustment program to HDD of PC.
Refer to "6-1-5 Copying or Deleting Adjustment Program" for copying.
4) Start the adjustment program in order to display the adjustment menu screen on PC display.
Refer to "6-2-6 Starting and Terminating Adjustment Program" for how to start the program.
Caution
It is very dangerous to perform any work with the DVD video camera/recorder disassembled, since the
DVD video camera/recorder has a laser-emitting block and high-voltage circuits: Do not remove any
parts other than the adjustment cover.
Note:
Always connect the Halcyon connector before connecting the DC power cord to the DVD
video camera/recorder: Connecting the Halcyon connector after powering the DVD video camera/
recorder could cause a fault.
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