Usb Flash Drive Not Recognized - Denon Home 250 Service Manual

5. Cannot connect to the network by wireless LAN
Is the LAN cable connected?
NO
Is the wireless LAN channel for the attempted con-
nection separate from other wireless LAN chan-
nels?
YES
Can other devices (PC, etc.) be connected in the
place where this unit is installed?
YES
Are the 2 antenna cables of this unit connected?
YES
Connect router to this unit according to "QUICK
SETUP GUIDE".
YES
Remove the LAN cable and turn the power back
on.
Do not connect a LAN cable when using a wireless
LAN connection.
NO
Configure the settings so that the LAN channel of
the attempted connection is not duplicated with
any other wireless LAN channels.
NO
The unit may not be receiving a wireless signal.
Move the router.
Install an access point.
NO
Connect the 2 antenna cables of this unit correctly.
NG
Check whether the network module is faulty.

6. USB flash drive not recognized

Is a USB hub being used?
NO
Is the USB flash drive supported by this unit?
YES
Is [JK3003 (USB connector) : 1pin] receiving a 5V
supply?
YES
Check whether the network module is faulty.
48
YES
Do not use a USB hub.
NO
This unit only supports mass storage devices that
have FAT16 or FAT32 format or are MTP compat-
ible.
NO
Check the soldering of [IC3003].
If there are no abnormalities, [IC3003] is faulty.