Pioneer VSX-821-K Service Manual page 43

5
[5] BT (Bluetooth) TROUBLESHOOTING
Step 0: Preliminary confirmation
Confirm the following items before checking
Do screws of PLATE_SCREW
securely tighten ?
Yes
To Step 1
Step 1: BT_DET
CP603 (pin 8)
Is the voltage 0 V?
Yes
To Step 2
Step 2: Power supply
CP603 (pin 6)
Is the voltage 5 V?
Yes
To Step 3
Step 3: BT_ID
CP603 (pin 7)
Is the voltage 0.7 to 1.2 V?
Yes
To Step 4
5
6
No
Tighten screws securely.
No
Check the pattern in the path and
SUBWOOFER Assy.
OK
Check the pattern in the path and
MAIN and CPU Assys.
5 V input
Is there any loose connection
No
CN602, CP602 of
SUBWOOFER Assy?
Yes
To Step 2
Check the pattern in the path and
MAIN and CPU Assys.
No
Check the pattern in the path and
SUBWOOFER Assy.
OK
Check the pattern in the path and
MAIN and CPU Assys.
6
7
Step 4: Communication
CP603 bt_rx,tx (pins 9, 10)
Do bt_rx and bt_tx
communication
with main micom?
Yes
To Step 5
Step 5: Audio out check
CP603 (pins 1, 3)
Is there a audio signal?
Yes
Check the SUBWOOFER Assy.
OK
Check the MAIN, CPU and
AUDIO Assys.
No
VSX-821-K
7
8
bt_rx and bt_tx should be high
No
during operation.
Check the pattern in the path of
SUBWOOFER Assy.
OK
bt_rx and bt_tx should be high
during operation.
Check the pattern in the path of
MAIN and CPU Assys.
No
Check the pattern in the path.
8
A
B
C
D
E
F
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