VSX-74TXVi
231
5
6
7
8
5
6
7
8
C
D
F
A
B
E
1. Prepare a PC that has the "ufu.exe" file, an RS-232C cable
(9-pin to 9- or 25-pin, cross).
2. Turn off the power to this unit by setting the main volume
level to "---dB."
3. Connect the RS-232C terminal on the rear panel and the PC,
as indicated in "Connections."
4. Simultaneously press and hold the VSEL and
↓
keys for
about 5 seconds.
5. The unit is turned on, and "MAIN DOWNLOAD" is displayed.
6. Double-click on "ufu.exe".
7. Check that "Details" is selected in MODE SELECT.
8. Select the required .mot file.
9. Select the baud rate.
• Basic speed: 19200
• Data transfer speed: 57600
10. Click on Start.
11. "Completed" is displayed for about 3 minutes in the
"ufu.exe" window.
12. Disconnect then reconnect the AC power cord of the unit.
If the unit is not reset, retry from Step 3.
13. Check the version.
Following the procedures described in "Version indication"
in "7.1.1 TEST MODE," check that the version has been
changed to a new one.
[Procedures]
[Connections]
Connect as indicated in the figure below:
• PC with a serial port
• RS-232C cable (9-pin to 9- or 25-pin, cross)
• Program for downloading (ufu.exe)
• Firmware (.mot file)
[Tools to be used]
[Purpose]
[Note]
Do NOT disconnect the AC power cords of this unit nor the PC.
Refer to this section when rewriting of a Flash ROM is required by the instruction of service information, etc.
RS-232C
cross cable
(9-pin to 9- or 25-pin)
Check that "Details" is selected in MODE SELECT.
Select the baud rate.
• Basic speed: 19200
• Data transfer speed: 57600
MAIN microcomputer
PC
This unit
