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My system tell me that my serial port is running at 9600 bad. My motherboard is new enough to be running at top speed. What is the problem and is there anything I can do to fix this?

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The mother board can be new enough to run at 19200 Baud rate or even more but most of the devices run at a baud rate of 9600. If the baud rate of the motherboard is increased then the communication between the device and the motherboard can become an issue.

If you still want to change the baud rate then the option will be available with the software you get with the device you are using with the serial port.

If I can know the device attached to the serial port then I can help you further.

Kindly Comment.

Posted on Jul 23, 2009

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I'm sure you have fixed your printer by now... but reflash the printer.

Flash memory is contained in SIMMs (single in-line memory modules) located
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3. Set the printer power switch to O (off).
4. If the printer is already connected to the serial or parallel port of a
computer capable of running an MS-DOS® based PKZIP® self-extracting
file, go to step 11. If not, go to step 5.
5. Unplug the AC power cord from the printer.
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7. Connect a parallel data cable to the LPT1 port or a serial data cable to the
COM1 port of an IBM-compatible computer that is using the PC-DOS™ or
MS-DOS operating system.
NOTE: You can connect the cable to the LPT2 port if the LPT1 port is alreadyin use. The load commands are different if you use this port, as
described in the note after step 18.
8. Connect the data cable to the appropriate I/O port of the printer.
9. Plug the AC power cord into the printer.
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11. Insert the emulation or upgrade diskette into diskette drive A (or B) of the
computer.
12. Make the diskette drive the active drive by typing the following at the DOS
prompt:
A:<return> (If the diskette is in drive B, type B:<return>)
13. Get the name of the compressed file on the diskette by listing the
contents of the diskette; at the DOS prompt type:
DIR<return>
The compressed file on the diskette takes the form FILENAME.EXE
Now write down the complete name of the file with the .EXE extension.
14. On the printer control panel, press and hold down the ON LINE + PAPER
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Continue holding the ON LINE and PAPER ADVANCE keys down for five
seconds, then release them.
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DATAPRODUCT” appears on the LCD.
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DATAPRODUCT (parallel)
CENTRONICS* (parallel) (default port)
RS232-9600 (RS-232 serial, 9600 baud)
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RS232-38.4K (RS-232 serial, 38400 baud)
RS232-115K (RS-232 serial, 115000 baud)
RS422-9600 (RS-422 serial, 9600 baud)
RS422-19.2 (RS-422 serial, 19200 baud)
RS422-38.4K (RS-422 serial, 38400 baud)
RS422-115K (RS-422 serial, 115000 baud)
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press ENTER. “WAITING DOWNLOAD / PORT = <your selection>
appears on the display.
18. At the DOS prompt on the computer type:
FILENAME.EXE -pb<return>
where FILENAME.EXE is the compressed file you noted in step 13. This
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file into the flash memory on the printer controller board.
NOTE: If you are loading the file using the LPT2 port on the computer, enter
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FILENAME.EXE -pb 2 <Return>
The 9600 baud rate is the only selection older versions of DOS can
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Interrupting a download will damage the flash memory on the controller
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20. Unplug the AC power cord from the printer.
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LineMatrix
www.sinca.biz
Toby

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All info from juliankov appears good.. but thought I'd add a bit of stuff I found on a web site..

http://www.tek-tips.com/viewthread.cfm?qid=300461&page=2

Use a console cable with following minimum pinout (the flat gray one with the RJ45- D9 type converter currently shipping with new P33xx switches will suffice): DB9 Console Port
1 ----------- 6
2 ----------- 3
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5 ----------- 5
6
7 ----------- 8
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9

Obviously the speed is set to 9600
maybe stop all sessions & try to re-establish a new one. The instruction manual warns u can only run one..

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