Read Sony CDX-GT828U / CDX-GT870US / CDX-GT878US Service Manual online
CDX-GT828U/GT870US/GT878US
15
SECTION 4
DIAGNOSIS FUNCTION
Description of the Diagnostics function:
1. Setting the Diag display mode
With the power off, press the [4/ALBUM +] button, [5/DM+]
button, and [4/ALBUM +] button on the set body or the remote
control (for more than 2 seconds) in turn.
button, and [4/ALBUM +] button on the set body or the remote
control (for more than 2 seconds) in turn.
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 [
M >/
SEEK+] or [
. m/
SEEK–] keys.
4. Contents of each display mode
4-1. Reset count display mode
4-2. Reset count by watchdog timer display mode
4-3. Number of connected units display mode
The display mode is switched by each rotation of [4/ALBUM +] or
[3/ALBUM –] keys during the number of connected units display
mode.
[3/ALBUM –] keys during the number of connected units display
mode.
4-4. Operating hours display mode
Reset count display
01
XX
Reset count by watchdog timer display
02
XX
Number of connected units display
03
XXX
Operating hours display
04
XXXX
CD error information display
05
XX
OFFSET/FAILURE error display
06
XXXXX
USB error information display
07
XX
1
1
1
1
01
XX
Reset count
(in hexadecimal format)
Diag code
01: Reset count
Reset count
(in hexadecimal format)
02
XX
Diag cord
02: Number of resets by
watchdog timer
No. of connected units history 1 (latest) display
No. of connected units history 2 display
No. of connected units history 3 display
03
1
XXX
XXX
XXX
03
03
2
3
04
XXXX
Operating hours
(in hexadecimal format)
Diag code
04: Operating hours
1
XXX
Diag code
03: Number of connected unit
Recency of information
1-3: 1 represents the latest.
Show the number of connected units for
CD-C,MD-C and XM respectively from
the rightmost (in hexadecimal format).
03
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