MEX-BT2600 - Sony Car Audio Service Manual (repair manual). Page 5

NOTE  FOR  REPLACEMENT  OF  THE  BT  BOARD
When repairing, the complete BT board (A-1433-972-A) should 
be replaced since any parts in the BT board cannot be repaired.

NOTE  FOR  REPLACEMENT  OF  THE  SERVO  BOARD
When repairing, the complete SERVO board (A-1177-201-A) 
should be replaced since any parts in the SERVO board cannot be 
repaired.

NOTE  FOR  REPLACEMENT  OF  THE  AUX  JACK 
(J901)
To replace the AUX jack requires alignment.
1.  Insert the AUX jack into the front panel.
2.  Place the KEY board on the front panel and align the terminals 

of the AUX jack with the holes in the KEY board.

3.  Solder the three terminals of the jack.

1. Required Equipment
•  Set to be tested (MEX-BT2600)
•  Cellular phone (Recommended SEMC K320i or K800i, or 

select from connectable cellular phones list)

•  Speaker connection (at least Front L/R ch)
•  DC power supply (12V)

2. Preparation
Turn on the Bluetooth function of the cellular phone in advance.
Remove a Bluetooth device connected to the cellular phone in ad-
vance. (at least, remove XPLOD)

3. Test Environment
•  No other Bluetooth device is making a communication in the 

periphery. (within 20m)

•  No other MEX-BT2600 is supplied with electric power.
•  There are no two or more wireless LAN access points in the 

periphery. (with 50m) (one is OK)

•  The set should be tested in a place such as a meeting room, free 

from ambient noise.

•  The speaker at the far end should be in a place such as another 

meeting room separated acoustically.

4. Setting
Install the MEX-BT2600 on the desktop.

5. Precautions
Beware of the following points when conducting the talking 
test:
•  There is no fault if a talking can be made by adjusting appro-

priately the volume of the telephone of the other party and the 
cellular phone connected through the Bluetooth, besides the 
setup of MEX-BT2600.

•  The speaker’s voice will become loud naturally if the periph-

ery is noisy, or become low if quiet. (even though the speaker 
intents to talk on the same volume level)

•  The speaker’s voice will become loud naturally if the other 

party’s voice is loud.

6.  BT PHONE Function Check
1.  Press the [BLUETOOTH] button for 5 seconds to check if the 

BT logo changes from lighting to blinking.

2.  Search peripheral equipment from the cellular phone to check 

if “XPLOD” is found.

3.  Search peripheral equipment from the cellular phone apart 

from the set about 5m to check if “XPLOD” is found.

4.  Check if peripheral equipment can be registered to the cellular 

phone (pass code 0000).

5.  Make a connection to the cellular phone to check if the HF 

logo lights up. (This may be conducted at the same time in item 
4)

6.  After making a connection to the cellular phone, move the cel-

lular phone apart from the set about 5m to check if the connec-
tion is held.

7.  After switching the source of the MEX-BT2600 to other than 

BT PHONE (e.g. TUNER) to check that a sound is generated, 
make a call to the cellular phone connected to the set.

8.  Check that the sound being played is interrupted and in turn the 

ring tone is heard. (the built-in sound of the set will be gener-
ated or the ring tone of cellular phone will be heard depending 
on the cellular phone)

9.  Press the [PUSH SELECT] button for a short time to check 

that the conversation can be made.

Under normal conditions, the battery will last

approximately 1 year. (The service life may be

shorter, depending on the conditions of use.)

When the battery becomes weak, the range of the

card remote commander becomes shorter. Replace

the battery with a new CR2025 lithium battery. Use

of any other battery may present a risk of fire or

explosion.

Notes on the lithium battery
• Keep the lithium battery out of the reach of children.

• Wipe the battery with a dry cloth to assure a good

D

• Be sure to observe the correct polarity when

• Do not hold the battery with metallic tweezers,

Battery may explode if mistreated.

Do not recharge, disassemble, or dispose of

in fire.