Pioneer VSX-918V-S Service Manual page 35

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[2] USB TROUBLESHOOTING
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Description of Error Indications
FL Display
USB ERROR1
USB ERROR2
USB ERROR3
If a USB ERR message lights in the display, try following the points below:
• Switch the receiver off, then on again.
• Reconnect the USB device with the receiver switched off.
• Select another input source (like DVD/BD), then switch back to USB.
• Use a dedicated AC adapter (supplied with the device) for USB power.
If this doesn't remedy the problem, it is likely your USB device is incompatible.
Operations when overcurrent to a USB
device is detected
(1) Overcurrent to a USB device is detected at the port for
the microcomputer.
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(2) The power supply to the USB device is stopped.
(3) Control of 5 V power is disabled at the port for the
microcomputer.
(4) Change of indications on the FL display
Flashes for 2 sec.
U S B
U S B
(5) To supply power to the USB module again:
• Turn the power to the unit off then back on.
• Set the function setting to anything other than USB
then back to USB.
• Press the USB play key on the remote control unit.
(6) After overcurrent is detected, if the USB play key is
pressed while the error indication is displayed, power
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supply to the USB module is restored. If overcurrent
is no longer detected, the indications shown below are
displayed (normal indication):
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Error Content
Detection of overcurrent to a USB device
Detection of a medium not supported
Communication error with the system
microcomputer
E R R 1
Lights up after flashing for 2 sec.
E R R 1
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i
U S B
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Possible causes and actions to be taken
Overcurrent (500 mA or more) is consumed at the connected USB device.
• Some USB devices, such as a portable HDD, need more current than that
this unit supplies. (Use the AC adaptor for the connected USB device.)
• The USB power is short-circuited.
A USB device that this unit does not support (other than the Mass Storage
Class) is connected (such as a mouse, printer, or digital camera).
• Connect a mass storage class USB device.
Communication between TCC8600-00X-EA-UG (IC401) and PEG467/469A
(IC9001) failed.
• Defective connection (connectors) inside this unit
• See STEP 3 of Troubleshooting.
In this state, flashing of "USB ERROR1" stops, but
playback will not start. To start playback, press the USB
play key again.
In the above case, if overcurrent is detected again, the
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above procedures 1 through 4 are repeated.
In a case where a medium not supported
is connected
(1) Change of indications on the FL displays
If overcurrent is detected before detection of a
non-supported medium, the error indication "USB
ERROR1" remains, as the power supply to the USB module
is stopped.
On supported media
The formats of supported media that can be played back on
this unit are MP3, WMA, and AAC.
Some media in MPEG4 can also be played back. As AAC
derives from MPEG4 codec, playback of media in AAC
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codec of MPEG4 is possible.
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VSX-918V-K
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2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
Flashes for 2 sec.
U S B E R R 2
Lights up after flashing for 2 sec.
U S B E R R 2
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co
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9 9
A
B
C
2 8 9 9
D
E
F
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