Kenwood NX-3720HG Service Manual page 159

Check the PCB side B (a).
Pass
[The BT/GPS power supply line 33BT circuit is
faulty]
Verify the PCB side B parts.
C5, C46, C44, C49
Replace any abnormal parts.
Check the PCB side B (b).
Pass
[The BT/GPS power supply line 18BT circuit is
faulty]
Verify the PCB side A parts.
C2, C47, L5, L13, C45, C48
Replace any abnormal parts.
Fail
[The BT/GPS IC is
abnormal]
Replace the PCB.
Fail
[The BT/GPS IC is
abnormal]
Replace the PCB.
(No.RA054<Rev.001>)1-159