81
Checking the USB device
YES
Is the USB device compatible with the set?
Are you using a USB hub?
Only mass storage devices in FAT16 or
FAT32 format or MTPcompatible devices
and iPod (Remove some models) are
supported.
Don't use the USB hub.
NO
YES
NO
Checking the set (AVR-1912/2112CI)
YES
YES
Is a voltage (5V) supplied between the pins 1 and 4 of
JACK102(AVR1912E3)/JACK101(except AVR1912E3) on the USB
board (USB connector)?
The circuitry from IC17 on the HDMI board to JACK102(AVR1912E3)/
JACK101(except the AVR1912E3) on the USB board is defective.
Is the wire properly connected between CP1 on the HDMI board and
CN104(AVR1912E3)/CN102(except the AVR1912E3) on the USB
board.
The Q24 and surrounding circuitry on the
HDMI board are defective.
Connect the wire properly.
NO
NO
5.2. USB device is not recognized
The circuit between IC17 and IC15 is
defective.
Checking the set (AVR-1912/2112CI):(If no picture is output)
Check the analog video circuit.
Are video signals output from IC15 pin 27 (Y) and pin 24 (C)?
NO
Checking the set (AVR-1912/2112CI):(If no sound is output)
YES
YES
Check the Digital audio circuit.
Are S/PDIF signals output to IC21 pin 10?
IC17 and surrounding circuitry is defective.
NO
5.3. No picture or no sound is output
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