Check the USB device being used
Checking the unit (If no picture is output)
YES
YES
Is the USB device supported by this unit?
Check the VIDEO circuit.
Is a USB hub being used?
Are digital video signals((920PCK, 920VD0 - 920VD7)) output from
CY920 to IC421(V.PLD)?
This unit supports devices in the FAT16 and FAT32-
formatted mass storage class, MTP-compatible devices
and iPods (with the exception of some models).
Do not use a USB hub.
NO
YES
NO
Checking the unit
Checking the unit:(If no sound is output)
YES
YES
YES
YES
Can a voltage (5V) be conîšżrmed between pin 1 and pin 4 of JK608 (USB
Connector) on USB PCB?
The USB signal circuit between CY920 and JK608 of the USB PCB
are faulty.
Check the AUDIO circuit of IC251(DSP) or later.
Are CN321 of the DIGITAL PCB and BN321 of the USB PCB correctly connected?
Are I2S signal output to pin 26, 28, 30, 34 of the CN501 DIGITAL PCB
?
(The 30, 32, 34pin in the case of DSD)
Are audio signal output to pin 85 of IC221(A.PLD) on DIGITAL PCB.
The circuit around IC503 of the DIGITAL
PCB is faulty.
Connect the connectors correctly.
NO
NO
5.3. A connected USB device is not recognized.
5.4. No picture or sound is output
The circuit around CY920, IC421(V.PLD) is
faulty.
The circuit around CY920 is faulty.
The circuit around IC221(A.PLD) is faulty.
NO
NO
NO
101
To Next Page
Loading...
