Troubleshooting - Vox -01 Operating Manual

10. Troubleshooting

Problem
System does not power on after
pressing power button
System does not recharge after
connecting through USB
Display shows error messages
(green text).
Battery lifetime is too short
Battery indicator is inaccurate
Device warms up during use
Device not recognized by PC
when connected through USB
Display backlight turns off, no
response to touch screen
Device "hangs," becomes un-
responsive, or will not power
up after resetting, and/or LED
next to USB port burns red.
Possible cause
Battery empty
Charge current too low
Error on display processor or in
communication between DSP
and display processor
Battery not fully charged
Battery is worn
Battery charge measurement
system poorly calibrated (e.g.
due to self-discharge after pro-
longed shelving)
Lack of ventilation
Driver problem
Device in measurement mode
Backlight time-out event
Internal software problem
VOX-01 Operating Manual
Solution
Connect wall charger for at
least 30 minutes
Use bundled wall charger;
standard PC USB ports do
not supply enough current to
charge
If the problem persists, contact
support.
Keep device on charger for at
least 4 hours
Have battery replaced after ap-
prox. 400 charge cycles
Completely drain the battery,
and then fully recharge. Repeat
if necessary.
Warming up of the device
to temperatures of approx.
35°C/95°F is normal. If the
device runs considerably hotter
than that, check ventilation
and contact support if the
problem persists
Update PC drivers (VOX-01 is
approached as a mass storage
device)
Select USB data transfer mode
when dialog window appears
on the VOX-01 screen
Adjust backlight time-out in
power saving settings. Pressing
power button turns the display
back on
Keep the power button pressed
for 10s. This forces the device
to shut down. Then press the
power button again to restart.
If the problem persists, contact
support
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