Marantz SR7009/U1B - Page 117

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
CX870 or CY920 to IC421(V.PLD)?
This unit supports devices in the FAT16 and FAT32-for-
matted 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 conrmed between pin 1 and pin 4 of JK608 (USB Connec-
tor) on USB PCB?
The USB signal circuit between CX870 or CY920 and JK608 of the
USB PCB are faulty.
Check the AUDIO circuit of IC251(DSP) or later.
Case of CX870 model
Are CN914 of the CX870MIDDLE PCB and BN321 of the USB PCB correctly con-
nected?
Case of CY920 model
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.
Case of CX870 model
The circuit around IC911 of the CX870MID-
DLE PCB is faulty.
Case of CY920 model
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 CX870 or CY920,
IC421(V.PLD) is faulty.
The circuit around CY920 or CX870 or CX870MID-
DLE PCB is faulty.
The circuit around IC221(A.PLD) is faulty.
NO
NO
NO
d
d
d
d
d
d
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