Test Mode - Sony MEX-BT2500 Service Manual

MEX-BT2500
Description of the Diagnostics function:
1. Setting the Diag display mode
With the power off, press the [4] t [5] t [4] ([4] button
needs to be pressed for two seconds) button of set sequentially,
and enter the diag function mode.
2. Canceling the Diag display mode
During the Diag function mode, press the [OFF] button.
3. Initial display in the Diag display mode.
Just when the Diag mode is entered, "reset count" is displayed.
The display mode is switched by each rotation of
[SEEK ---] [SEEK+] keys.
or
Reset count display
0 1
Reset count by watchdog timer display
0 2
Number of connected units display
0 3 1
Operating hours display
0 4
CD error information display
0 5 1
OFFSET/FAILURE error display
0 6 1 X X X X X
24
SECTION 4

TEST MODE

X X
X X
X X X
X X X X
X X
4. Contents of each display mode
4-1. Reset count display mode
0 1 X X
Reset count
(in hexadecimal format)
Diag code
01: Reset count
4-2. Reset count by watchdog timer display mode
0 2 X X
Reset count
(in hexadecimal format)
Diag code
02: Number of resets by watchdog timer
4-3. Number of connected units display mode
0 3 1 X X X
Show the number of connected units for
CD-C, MD-C and XM respectively from
the rightmost (in hexadecimal format).
Recency of information
1-3: 1 represents the latest.
Diag code
03: Number of connected unit.
The display mode is switched by each rotation of [2/ALBM +] or
[1/ALBM --] keys during the number of connected units display mode.
No. of connected units history 1 (latest) display
0 3 1
No. of connected units history 2 display
0 3 2
No. of connected units history 3 display
0 3 3
4-4. Operating hours display mode
0 4 X X X X
Operating hours
(in hexadecimal format)
Diag code
04: Operating hours
X X X
X X X
X X X