Test Mode - Sony MEX-BT5100 Service Manual

MEX-BT5100
SERVICE MODE
The version of each microcomputer is displayed. The fi rmware can
be updated.
1. Version Display
Procedure:
1. Power supply of the set is turned off.
2. Press the [4] t [5] t [6] ([6] is pressed for two seconds)
button of the set sequentially, and enter the service mode.
3. The version of each microcomputer confi rmation screen is dis-
played.
4. Press the [OFF] button of the set, and release the service
mode.
DIAG MODE
Mode that memorizes reset frequency and operating time, etc. in
nonvolatile memory, and reads it.
Procedure:
1. Turn off the setting of the bluetooth signal, and power supply
is turned off.
2. Press the [4] t [5] t [4] ([4] is pressed for two seconds)
button of the set sequentially, and enter the DIAG mode.
3. Following information is displayed when operating it accord-
ing to Fig.1.
Reset frequency
Frequency to which [RESET] button is pressed and frequency
of POWER ON RESET when power supply is turned on.
Software reset when releasing test mode is not counted.
Number of maximum counts: 254 times.
Reset frequency with watchdog timer
Reset frequency with watchdog timer.
Number of maximum counts: 254 times.
Number of connected slave units
The number of an external connection of the SONY BUS slave
unit is memorized by 3 histories or less.
The SONY BUS slave unit that becomes an object is CD slave,
MD slave, and undefi ned slave.
Connected number in test mode is off the subject.
Operating time
Time that the set is operating (Every hour) is counted.
Operating time in test mode is off the subject.
Time of maximum counts: 65534 hours.
CD error information
CD mechanism error information in the head unit is memo-
rized by 3 histories or less.
The memorized content is error information, a track kind, and
operating time (Every hour).
Error in test mode is off the subject.
Amplifi er IC with built-in power supply error information
Information on the OFFSET/FAILURE error with amplifi er IC
with built-in the power supply is memorized by 3 histories or
less.
The memorized content is error information and operating
time (Every hour).
OFFSET/FAILURE error in test mode is off the subject.
4. Press the [OFF] button of the set, and release the DIAG
mode.
20
SECTION 4

TEST MODE

Fig.1 Method of operating DIAG mode
Joystick to right
01 Reset frequency
Joystick to right
02 Reset frequency with watchdog timer
Joystick to right
031 Number of connected slave units (History 1)
Joystick to down
032 Number of connected slave units (History 2)
Joystick to down
033 Number of connected slave units (History 3)
Joystick to right
04 Operating time
Joystick to right
051 CD error information (error content + error detailed) (History 1)
Joystick to down
051 CD error information (track kind + operating time) (History 1)
Joystick to down
052 CD error information (error content + error detailed) (History 2)
Joystick to down
052 CD error information (track kind + operating time) (History 2)
Joystick to down
053 CD error information (error content + error detailed) (History 3)
Joystick to down
053 CD error information (track kind + operating time) (History 3)
Joystick to right
061 OFFSET/FAILURE error (History 1)
Joystick to down
062 OFFSET/FAILURE error (History 2)
Joystick to down
063 OFFSET/FAILURE error (History 3)
Joystick to right
Joystick to left
Joystick to left
Joystick to left
Joystick to up
Joystick to up
Joystick to left
Joystick to left
Joystick to up
Joystick to up
Joystick to up
Joystick to up
Joystick to up
Joystick to left
Joystick to up
Joystick to up
Joystick to left