JVC DR-MH50SE Service Manual page 15

5.3 Updating the firmware of the main body
• Firmware update disc supports CD-R media.
• When firmware update is necessary, information is available from the homepage of DIGITAL VIDEO STORAGE CATEGORY, CS
group.
5.3.1 Creating an update disc
Please check the details of the update disc creation method by JS-NET.
(1) Down load the update file from JS-NET.
(2) Write the update file into CD-R. Pay attention in the following points when writing the update disc.
• Make sure to write in "Disc at Once".
• Set the file compatibility to "ISO9660 format". (ROMEO, JOLIET are disapproved.)If the writing method is not correct, the update
results in an error.
5.3.2 Update procedure
• There are two methods of updating firmware, using JIG mode <method 1> or not using JIG mode(User update mode) <method 2>.
Updating can be operated in either method.
<Method 1>
(1) Set to the JIG mode.
(2) Load the update disc on the tray, and then close the tray.
(3) When the disc reading operation is completed, transmit "43-70" with the JIG remote control unit.
If the update disc is not correct, FL indicator displays an "ERROR" after transmitting "43-70". Transmit "43-70" once and make
the FL indicator to normal display, and then reload the disc then transmit "43-70" again.
(4) "UPDATE" is displayed in the FL indicator, and the FL indicator changes to "FL UPDATE" afterwards. It takes approx. 2 min-
utes for the change.
(5) Remove the disc as the tray is ejected, and then transmit "43-70" with the JIG remote control unit. Then the FL indicator chang-
es from "UPDATE" to the normal display.
(6) Close the tray and turn the main body OFF. Pull out the power code from the wall socket, then plug the power cord into the
wall socket again.
(7) When "LOADING" in the FL indicator disappears, turn the main body ON.
(8) Display the SYSTEM INFO menu, and check the version of the firmware.
(9) Cancel the JIG mode.
<Method 2>
(1) Turn the power ON. Load the update disc on the tray and close the tray.
(2) When the disc reading operation is completed, turn the power OFF.
(3) Keep pressing the "PAUSE" button and the "POWER" button at the same time. (Until FL indicator changes to "UPDATE").
(4) In approx. 2 minutes the tray is ejected. Remove the disc and close the tray.
(5) Reset operation is carried out automatically, and it becomes standby condition.
(6) Then, display the SYSTEM INFO menu in the JIG mode and check the version.
(No.YD060)1-15