22
XDJ-RX
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Failure in startup and in the
communication system
See "Updating of the firmware does not
start" in this flowchart.
Check if the updating notification circuit on
the MIXB Assy is normal.
W
hile "UPDATE"
is displayed on the LCD, check that the
voltage at Pin 24 of C
N
3403 (EUP_
W
RITE)
on the MIXB Assy is 3.3
V
.
Check if data on the USB memory device
have been read. See "Data of the device
(USB memory device, hard disk, etc.)
connected to the USB A connector cannot
be read" in this flowchart.
After the PO
W
ER switch is set to O
N
, the
startup procedure stops in mid-course, with
the message "Connect USB storage device
to top USB1 port" displayed on the LCD.
Failure of previous updating of the firmware
was the cause. (Power failure occurred
during previous updating.)
Check the keys (switches) in the CDJB and P
N
L1
Assys, using the diagnosis in Service mode or
referring to "
N
o operation with keys (switches)."
• CDJB Assy: RELOOP/EXIT
• P
N
L1 Assy: USB1 STOP
If the keys (switches)function normally, the
EUP UCOM(IC3601) may be in failure. Replace it.
Perform updating of the firmware.
W
hen the unit is started in Update
mode, does the indication on the LCD
become that for Update mode?
Is the voltage at Pin 24 of
C
N
3403 (EUP_
W
RITE) 3.3
V
?
Startup has been
completed properly.
Startup is not completed.
Startup was not completed,
or updating failed.
Updating of the firmware does not start.
Updating not available
Updating not available
Yes
Yes
Check that the voltage at Pin 26 of
IC3601 (EUP UCOM) on the MIXB Assy
is 3.3
V
.
If it is 0
V
, replace the IC3601 (EUP UCOM).
I.MX (IC1001) cannot recognize the updating
status. Check connection between the MAI
N
Assy and MIXB Assy.
Check also the line connected to Pin 12 of
C
N
2402 (EUP_
W
RITE) on the MAI
N
Assy.
If no problem is found, IC1001 may be
defective. Replace the MAI
N
Assy.
The device connected to the USB connector
and the connector itself are normal.
Data of the firmware for EUP UCOM are
transmitted through the USB A connector to
EUP UCOM via I.MX6 (IC1001).
Check communication between I.MX6 (IC1001)
and EUP UCOM and the connectors and cables
that connect the MAI
N
Assy and MIXB Assy.
Refer also to "
c
Communications between
microcomputers" in "10.46
W
A
V
EFORMS."
If no problems are found in communication
waveforms, peripheral circuits, connectors, or
cables, replace the MAI
N
Assy or EUP UCOM
(IC3601).
EUP UCOM
Rewriting of which one failed,
the flash ROM or EUP UCOM?
N
o
N
o
Check the periphery of the flash ROM (IC1501).
If there is no problem, replace the MAI
N
Assy.
Flash ROM
Updating of the firmware failed.
"Firmware update failed" is displayed.
Updating is not possible, because the program in
the microcomputer is abnormal, the flash ROM or
EUP UCOM is in failure, or the communication
line is in failure.
Check the indications displayed on the LCD
during updating. The updating status of the flash
ROM (IC1501) in the MAI
N
Assy is indicated on
the upper line (MAI
N
). The updating status of the
EUP UCOM (IC3601) in the MIXB Assy is
indicated on the lower line (SUB). If the progress
of a status bar is stopped in mid-course, rewriting
of the corresponding flash ROM or EUP UCOM
failed.
