MEX-BT5000 - Sony Car Audio Service Manual (repair manual). Page 5

5

To secure the connectivity with the new cellular phone etc. put on
the market after this machine is put on the market, the upgrade in
service is done.
Procedure:

1. The USB memory is prepared, and the firmware is downloaded

to the USB memory. (The USB memory is a thing to prepare
the one of about 64MB made of SONY POCKET BIT.)

2. Power supply of the set is turned off.
3. Press the [4] 

t [5] t [6] ([6] is pressed for two seconds)

button of the set sequentially, and enter the service mode.

4. Wait for 1 minute after executing step 3, the set is connected

with the USB memory with connected the USB cable (Part.
No. J-2502-103-1) as shown in Fig.1.

5. Wait for 1 minute (time untill access LED of USB memory

disappears) after executing step 4, push the joystick for two
seconds of the set, and the version up confirmation screen is
displayed.

6. Select “Yes” by using the UP/DOWN of joystick, and confirm

the displayed version number, and push the joystick.

7. The version up is executed. When the version up ends, reset is

automatically done, and usual screen of power off state is
displayed.

Even if the set is reset, bluetooth system menu setting, connected
registration equipment, and telephone book function, etc. recorded
in tha flash memory are not initialized. It is necessary to execute
factory shipment mode to initialize them.
Procedure:

1. Turn off the setting of the bluetooth signal, and power supply

is turned off.

2. Press the [4] 

t [5] t [1] ([1] is pressed for two seconds)

button of the set sequentially, and enter the test mode.

3. Press the [1] button for two seconds of the set, and the DAIG

information is initialized.

4. Press the [6] button for two seconds of the set, and the bluetooth

setting item preserved in NOR FLASH is initialized.

5. Press the [OFF] button of the set, and the test mode is made

clear. At this time, the memory of the tuner is initialized.

6. The power supply code is removed and the power supply is

turned off, and the power supply will be turned on again in
one minute. At this time, the tuner preset, and EQ3 setting
value, etc. are initialized.

SUB board
(CN903)

USB memory

USB cable
(Part.No. J-2502-103-1)

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.

•

Keep the lithium battery out of the reach of children. 
Should the battery be swallowed, immediately consult a doctor.

•

Wipe the battery with a dry cloth to assure a good contact.

•

Be sure to observe the correct polarity when installing the battery.

•

Do not hold the battery with metallic tweezers, otherwise a short-circuit may 
occur.

c

Battery may explode if mistreated.
Do not recharge, disassemble, or dispose of in fire.

The disc slot lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure :

1. Power supply is turned off.
2. Enter the Jog daial to the left, and enter the Jog daial to the

right, and press the [1] 

t [2] ([2] is pressed for two seconds)

button of the set sequentially, and disc slot is unlocked.

To lock the personal information in the following menus by setting
a 4-digit password.
“Dialed Calls,” “Received Calls,” “Phonebook,”
“Preset Dial,” “Receive PB”
If you set the security, “Security Locked” appears when the above
menus are operated.
To  unlock the security, select “Unlock” and input the password
number.

Use following TEST DISC whan this set confirms the operation
and checks it.

3-702-101-01 YEDS-18 (for CD)
4-225-203-01 PATD-012 (for CD)
J-2502-063-1

TCD-R082LMT (for CD-R)