Denon AVR-4810CI Service Manual
Also see for AVR-4810: Owner's manual
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73AVR-4810CI/AVR-48106.2. USB device is not recognizedChecking the settingsAre the USB port settings correct? NO Set the front and rear properly.YESChecking the USB deviceAre you using a USB hub? YES You do not use the USB hub.NOIs the USB device compatible with the set? NO Only mass storage devices in FAT16 or FAT32 formats or MTP-compatible devices and iPod (Remove some models) are sup-ported.YESChecking the set (AVR-4810CI)Is the wire properly connected between CX052 and CY052? NO Connect the wire properly.YESIs a voltage (5V) being supplied between pins 1 and 4 of JK451(back panel USB connector) and JK981 on the 8U-210063-3 cir-cuit board (front panel USB connector)?NO The TR452 and TR453 periphery circuitry is defective.YESIs the USB device not recognized for both the front and rear con-nectors? The circuit from IC462 to JK451 is defective.YES The circuitry from IC462 to JK981 on the 8U-210063-3 circuitboard is defective.Is theCW302 pin 24 output level "H"? NO The circuitry from IC701 on the 8U-210064 circuit board toCX302 is defective.YESThe network module may be defective.Rear is not recognizedFront is not recognized |
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