43
XW-NAV1-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
How to interpret the version code:
4
Remove the Up-Date Disc.
5
CHECK FOR THE FIRMWARE VERSION.
Press the ESC then the CHAP key on the Service remote control unit.
Firmware version will be displayed on the screen.
W
hen the changed version displays, the Re-write will be completed.
6
Turn off the power.
4. Troubleshootin
g
1
If updating of the firmware failed
If the main unit was turned off during updating, it cannot initialize and start up again properly. In such a case, replace the
flash ROM on the MAI
N
Assy.
If the main unit is turned off during updating of the SUB U-CO
N
, that updating will fail.
Upon the next startup, only updating of the SUB U-CO
N
will become possible. Perform updating of the SUB U-CO
N
software
again.
If updating of the firmware using the disc for updating failed
as the disc for updating recognized properly?
Check if the volume label of the disc is PIO
N
EER.
If the software files for the MPEG IC and for the SUB U-CO
N
are on the disc, updating of only the MPEG IC will be
Copy the necessary software files to separate discs.
• Is playback of a disc other than the disc for updating possible?
If playback of a test CD is also impossible, a reading section, such as PU, may be defective. In such a case, repair the
If playback of a test CD is possible, the disc for updating may be defective. Check for any scratches or foreign matter,
such as fingerprints, on the reading surface.
If no problem is found with the disc, create a new disc for updating again.
Fixed
Release year (One column of bottom)
Release month
Release date
Released times on the same day
Y M A 0 4 2 0 B
AREA:
W
Y REGIO
N
: 2
ROM
N
UMBER YMA0420B
Subcon
V
ERSIO
N
DB01T04241
EEPROM
V
ERSIO
N
M2M702AM00
REG CHK 00
SUM CHK 0ED8
FL
V
ERSIO
N
1.16
CHIP
V
ERSIO
N
1389DE
CODE SUM CHK OK!
D B 0 1 T 0 4 2 4 1
X = October
Y =
N
ovember
Z = December
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
