How To Write The Unique Id - Kenwood KDC-MP828 Service Manual

KDC-MP828/W7531/W7531Y/W8531
/W8531Y/X789/X8529/X889
QQ
3 7 63 1515 0
1. Introduction
The Unique ID is an identification code allocated to each DXM-
6800 mechanism unit. When written to the mechanism unit,
the ID is stored in the Flash memory area, managed by the
DSP.
During servicing of the unit, if and when the mechanism as-
sembly is replaced, the Unique ID of the old unit should be
written to the new mechanism assembly. At the same time,
after moving the Unique ID, the ID seal must also be moved.
The descriptions herein concern writing Unique ID, using the
functions of the DXM-6800 mechanism. It is possible to easily
re-write the Unique ID of the mechanism, using this function.
2. Unique ID
The Unique ID is an identification code allocated to each DXM-
6800 mechanism unit. This ID is consisted of 8-digit hexadeci-
mal numbers.
Example : 9F346D22, 352899AC, etc.
The ID number seal is placed on top of the mechanism cabi-
net. The 8-digit numbers and characters are the Unique ID
assigned to the mechanism. The Unique ID can be confirmed
TE
L 13942296513
in the MENU mode.
3. How to write the Unique ID, using the unit
In this section, the procedure for writing the Unique ID with
the unit is explained. Since this procedure is realized by put-
ting the mechanism into a special mode, the unit must first be
reset, immediately before conducting the procedure. At the
same time, the display mode of the unit must be set to P-
Time, prior to shifting into the write mode. Unless set to P-
time, 5 seconds after shifting into the write mode, ID digits
and ID numbers will be stopped from displaying.
3.1. How to shift into the Unique ID writing mode using
the unit
Procedure 1. Set the 63pin of the mechanism microcomputer
(TMP91CU27) to High.
(Connect X32 : IC1 63pin and Back Up 3.3V with
a lead.)
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18

HOW TO WRITE THE UNIQUE ID

* DXM-6800 : X92-5100-00
x ao u163
y
i
2 9
8
1
1
DXM-6800W
Procedure 2. Reset the mechanism microcomputer and boot
it up again.
(Resetting the mechanism microcomputer and
booting it up again can be achieved by cutting
off ACC and Back Up power supply once and
then re-starting the unit.)
Procedure 3. Insert a CD and use it as a source (i.e. let the
unit start reading the Disc.)
Q Q
3 6 7 1 3 1 5
Procedure 4. This completes the start up on Unique ID Write
mode.
After shifting into the Unique ID Write mode, the display will
be as shown in the figure below.
(In the Unique ID Write mode, actually, w is displayed first
and, after pressing FF key once in the Write mode, q is dis-
played.)
T-12 ←w
Figure1. Initial display of the Unique ID Write mode
Where,
q Unique ID
The contents of what are indicated by x : xx in the time code is
the actual contents of the Unique ID.
In sections of minutes : seconds, the Unique ID is indicated in
decimal numbers.
co
.
9 4 2 8
1
63pin
1
A3
A2
A1
A0
IC1
J76-0060-12
X32-5730-00
0-01
0 5 8 2 9 9 4 2 8
0:00 ←q
m
9 9
9 9