Replacing Parts; Troubleshooting - Kenwood KCA-BT100 Service Manual

Check of calls when parts or
Processor Unit (X32-) is replaced
• After parts or Processor Unit (X32-) is replaced, connect
Bluetooth compatible cell phone to KCA-BT100, and check
Hands-free calls.
• Telephone number that was used to check calls is recorded
in a telephone directory.
• After the completion of the check, please remove the rel-
evant telephone number from the telephone directory.

Troubleshooting

Error symptoms
Bluetooth device cannot be searched from cell phone.
Changer source selection is also impossible.
Bluetooth device cannot be searched from cell phone.
Changer source selection is possible.
Bluetooth device can be searched from cell phone but
connection (authentication) is impossible.
Changer source selection is possible.
The telephone directory data becomes NO DATA after the
telephone directory data is transferred from the cell phone.
Bluetooth device can be searched only when the device is
brought near to cell phone.
Input/Output of the hands-free audio are NG.
(Cannot send or receive call)
Audio level of hands-free call is low.
Cannot send call.
Receiving audio does not come out of the Head Unit speaker.

REPLACING PARTS

When replacing parts
1. Processor Unit (X32-) has been subjected to various RF
performance tests before factory shipment.
Therefore, Bluetooth RF Module (A1) and Main µ-COM (IC3)
cannot be replaced.
When Bluetooth RF Module (A1) or Main µ-COM (IC3) has
to be replaced, replace Processor Unit (X32-) of Processor
Unit Assy (Y33-2680-00) that is available for the service
replacement. (Refer to Ref. No. 10 of the Exploded View)
Note that the Chassis (702) of Y33-2680-00 does not have
Serial Number Sticker.
Thus, do not use the Chassis of Y33-2680-00 when replace-
ment.
2. Telephone directory data is stored in the Flash Memory
(IC8).
Replacing the Flash Memory (IC8) clears the telephone di-
rectory data.
IC2 (System µ-COM), IC3 (Main µ-COM) and their perimeter.
Q6 (BU5V AVR) and its perimeter.
A1 (Bluetooth RF Module), IC6 (3.3V → 5V Conversion) and their perimeter.
IC9 (3.3V REG.), IC10 (5V REG.) and their perimeter.
IC5 (5V → 3.3V Conversion) and its perimeter.
IC8 (Flash Memory) and its perimeter.
L1 (Chip ANT.) and its perimeter.
IC7 (PCM CODEC), Q10 (A8V AVR) and their perimeter.
IC13 (BPF) and its perimeter.
IC12 (MIC Input AMP) and its perimeter.
IC11 (Analog SW) and its perimeter.
KCA-BT100
Check points
7