Marantz SR7009/U1B - Page 115

YES
YES
YES
YES
YES
YES
YES
YES
YES
The circuit around Bluetooth Module (iBT-06-02S) or CX870 is faulty.
Can a voltage (5V) be conrmed between pin 1 and pin 4 of CN904
on DIGITAL PCB?
Is CN916 on the CX870 Module PCB connected correctly to BN921 on
the Bluetooth PCB?
Is the Bluetooth device compatible with the A2DP prole?
Is the Bluetooth function enabled on the Bluetooth device?
Can a voltage (5V) be conrmed pin 10 of CN916 on Bluetooth PCB?
Can a voltage (3.3V) be conrmed pin 6 of CN916 on Bluetooth PCB?
Can a voltage (3.6V) be conrmed pin 1 of IC923 on Bluetooth PCB?
Can a waveform (32.768kHz) be conrmed pin 4 of IC922 on Blue-
tooth PCB?
Is 1pin(LDO_ON) of Bluetooth PCB CN916 "Hi"?
The circuit between the AC inlet and CN904 is faulty.
Check the SMPS PCB.
Connect the connector correctly.
Use a device that is A2DP prole compatible.
Enable the Bluetooth function and try connecting
again.
The circuit between CN904 of the DIGITAL PCB and
CN916 of the Bluetooth PCB are faulty of wire or
PCB.
The circuit around Q1107 or IC112 of the DIGITAL
PCB is faulty.
The circuit around IC923 is faulty.
The oscillation circuit including IC922 is faulty.
The circuit between CX870 and CN916 of the LDO_
ON are faulty.
NO
NO
NO
NO
NO
NO
NO
NO
NO
5.2.1. Cannot connect to the Bluetooth (Case of CX870 model)
Checking the unit
Check the Bluetooth
d
d
d
d
d d
d
d
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