Troubleshooting - Bosch PRM-UST User Manual

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Troubleshooting

Problem
The unit does not work.
USB or SD storage
device not detected.
MP3 tracks do not play.
Bosch Security Systems B.V.
Possible cause
Power (plug) disconnected, the
unit is switched off or the mains
fuse is broken.
Device does not comply with
USB mass storage.
USB hub in use.
Format not supported.
The connection with the unit has
been terminated because an
electrical current higher than
allowed was taken from unit's
USB socket.
Partitioning of SD card is wrong.
Apart from SD, SDHC and class
of SD cards, it is also possible
that the card has a different
partition table than expected.
Format not supported.
Media is in "Stop" or "Pause"
mode.
User manual
Troubleshooting | en
Possible solution
Insert power cord and switch
on the unit. Check the mains
fuse.
Use a device complying with the
class of USB mass storage
(some portable audio players
included in the class of image
devices are not supported. Also,
some flash card readers cannot
be detected)
Some USB hubs will not
operate properly. Try a different
USB hub, or connect the
storage device directly to the
USB port. Also, if multiple
devices for USB storage are
connected through a USB hub,
only one of the devices will be
recognized.
Use only FAT, FAT32 and exFAT
file structure.
Wait several minutes. The rating
(allowable current) for this unit
is 500 mA or less per USB port.
Use USB storage devices that
meet these standards. If you
have a USB storage device
connected through a
buspowered USB hub, connect
the USB storage device directly
to this unit port. If shorted a
long time the USB port will
become defective.
Reformat the USB or SD card
with a PC that is known to give
good results.
MP3s are supported up to
320 kbps.
Change the mode to "Play".
06.2022 | V01 | F01U397942
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