YES
YES
YES
YES
YES
YES
The circuit around Bluetooth Module (iBT-06-02S) or CX870 is faulty.
Can a voltage (5V) be conîšżrmed between pin 1 and pin 4 of CN471
on DIGITAL PCB?
Can a voltage (3.6V) be conîšżrmed to BN921 on Bluetooth PCB?
Can a voltage (3.3V) be conîšżrmed to pin 4 of BN921 on Bluetooth
PCB?
Can a voltage (3.6V) be conîšżrmed to pin 10 of BN921 on Bluetooth
PCB?
Can a waveform (32.768kHz) be conîšżrmed to pin 4 of IC922 on
Bluetooth PCB?
Is 4pin(LDO_ON) of Bluetooth PCB BN921 "Hi"?
The circuit between the AC inlet and BN601 is faulty.
Check the SMPS PCB.
The circuit between CN741 of the DIGITAL PCB and
BN921 of the Bluetooth PCB are faulty of wire or
board.
The circuit around Q7404 or IC741 of the DIGITAL
PCB is faulty.
The circuit around IC912 of the ADAPTER PCB is
faulty.
The oscillation circuit including IC922 is faulty.
The circuit between CX870 and BN921 of the LDO_
ON are faulty.
NO
NO
NO
NO
NO
NO
5.2. Cannot connect to the Bluetooth
Pb
R9203
R9204
L9202
L9201
BN921
IC921
C9203
C9204
C9201
C9202
LDO_ON
3.3V
3.6V
Pb
+3.6V
+3.3V
Pb
C9207
C9206
C9205
R9205
R9207
R9206
R9201
R9202
IC922
X9201
32.768KHz
Bluetooth Test Points
(A SIDE) (B SIDE)
82
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