Denon DNP-720AE - Page 22

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3.2. Optical out
3.3. USB
Check the Power Supply Voltages for Optical.
MAIN B'D
• +3.3V_D1, [IC110] : 5pin
Check the Power Supply Voltages for USB.
USB B'D
• VBUS, [JACK400] : 1pin
Check the audio serial data from Optical.
MAIN B'D
• OPTOUT, [JACK101] : 3pin
Check the S/PDIF.
MAIN B'D
• [IC112] : 5pin
Check the voltage of each part.
MAIN B'D
1. [IC106] : 1, 2pin
SMPS B'D
2. [J1] : 7pin
Check the voltage of each part.
MAIN B'D
1. [IC107] : 1pin
2. [Q107] : 2pin (base) ("H" : OK)
SMPS B'D
3. [J1] : 10pin
Check the waveform of each part.
MAIN B'D
1. [IC110] : 2pin
2. [IC112] : 1pin
Check the S/PDIF.
MAIN B'D
• [U100] : 32pin
NO
NO
NO
NO
YES
YES
Check the communication signal for USB .
MAIN B'D
• USB+, [U100] : 38pin
• USB-, [U100] : 40pin
Are you using a USB hub?
Check the waveform of each part.
USB B'D
1. [JACK400] : 3pin
2. [JACK400] : 2pin
Don't use the USB hub.
NO
YES
YES
NO
YES
YES
A
Check the audio serial data from DIR.
MAIN B'D
• CX870_SPDIF, [IC112] : 5pin
Is the USB device compatible with the set?
Check the waveform of each part.
MAIN B'D
1. [U100] : 32pin
Only mass storage devices in FAT16 or FAT32 format or
MTPcompatible devices and iPod (Remove some models) are
supported.
NO
NO
YES