GE MAC 3500 Service Manual page 96

Maintenance
3. Connect the device to AC power.
Keep the device connected to AC power during the software update.
4. Insert the SD card with the required application software.
Before inserting the SD card, confirm that the dummy file update.com is located
in the card's root directory.
5. Power on the device.
NOTE:
The on-board LEDs flash a series of codes to indicate installation progress. Refer
to the following table for a description of those status codes.
When the installation completes successfully, both LEDs will begin to flash.
6. Do one of the following:
• Wait for the device to shut down.
• Manually shut down the device.
7. Remove the SD card.
8. Power on the device.
The device should now boot up with the updated software. On the Resting ECG
screen, verify the new software version.
Configuring the Service-Only Setup
Use the following procedure to configure the system's service-only settings. You need
the following information before beginning this procedure:
• System serial number
96
Do not power off the device during the update.
DS1 (Red) DS2 (Green)
Off Flashing
On
Off
Off Off
On
Off
Flashing Flashing
Flashing Off
On On
On
Flashing
After the installation is complete, the Watch Dog Timer (WDT) will eventually
timeout and shut down the device.
If you do not want to wait for the device to timeout, you can manually power
down the device.
MAC™ 3500
Status
No SD card detected for software updated.
Copying image files from SD card to SDRAM.
Erasing and/or formatting the NAND FLASH.
Applicable only during the software update
process.
Programming the NAND FLASH.
Successful completion of programming.
Error — Could program all the image files but
error in programming the status page 'Z0'.
Error — Could not program all the image files as
well as the status page 'Z0'.
Error — Could not program all the image files but
the status page 'Z0' updated successfully
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