Denon AVR-X3300W Service Manual page 79

5.3. Cannot recognize the connected USB device
Check the USB device being used
Is a USB hub being used?
NO
Is the USB device supported by this unit?
YES
Checking the unit
Are N1008 of the HDMI PCB and CN4402 of the
USB PCB correctly connected?
YES
Can a voltage (5V) be confirmed between pin
1 and pin 4 of CP4406 (USB Connector) on USB
PCB?
YES
The USB signal circuit between CY920 and CP4406 of the USB PCB are faulty.
YES
Do not use a USB hub.
NO
This unit supports devices in the FAT16- and
FAT32-formatted mass storage class, MTP-
compatible devices and iPod devices (except for
some models).
NO
Connect the connectors correctly.
NO
The circuit around U1006 of the HDMI PCB is
faulty.
5.4. No picture or sound is output
Checking the unit (If no picture is output)
Are digital video signals(920PCK, 920VD0 -
920VD7) output from CY920 to U1011 (V.PLD)?
YES
• Check the VIDEO circuit.
Checking the unit:(If no sound is output)
Are the I2S signal output to pins 26, 28, 30 and
34 of the U1008 HDMI PCB ?
(The 30, 32, 34pin in the case of DSD)
YES
Are audio signal output to pin 64 of U1041
(A.PLD) on HDMI PCB.
YES
Check the U1073(DSP) AUDIO circuit and the circuits thereafter.
79
NO
The circuit around CY920, U1011 (V.PLD) is
faulty.
NO
The CY920 is faulty.
NO
The circuit around U1041(A.PLD) is faulty.