Subject: HT750, HT1250, CT250, CT450 / UHF Range 1 Radios, Low or No Transmit Power Out

Symptoms:
Motorola has discovered a slightly higher than normal failure rate on UHF Range One (403-470 mhz) Professional and CTR Series Radios. The Radios may exhibit "Low Transmit Power Out" or "No Transmit Power Out."

Potential Problem Radios:
Model Numbers: AAH25Rxxxxxx and AAH34Rxxxxxx marked with a (#) sign prefix on the date code label ex: #0383

Serial Numbers: xxxTASxxxx through xxxTBCxxxx.

Cause:
An antenna mismatch condition can cause high current to be drawn by the driver.

Corrective Action:
A " patch" application program is used to adjust the V-Limit code plug lowering the transmitter driver current. This corrective action is only applicable to those UHF range 1 radios with a "#" prefix next to the date code.

The Code Plug Patch can be downloaded from the Dealer Secure Access Motorola Online Web Site. Follow the Code Plug Patch Procedure below.

This only applies to serial numbered radios listed above marked with a (#) prefix on the Date Code. Contact your local Motorola Authorized Service Representative to arrange for this modification.

$20.00 labor is authorized by warranty. Contact your local Motorola Authorized Service Representative to arrange for this modification.

Motorola is extending the expiration date of this SRN to include an additional six (6) months Warranty for this issue. All other repairs will be processed under the standard warranty.

* For international shipments contact your Motorola Regional Service provider.

Procedure:

1. Prepare the set up shown below:
   
   
2. Connect the appropriate programming cable to the side connector of the radio.
   
3. To extract the patch tools, unzip the correct zip file per the chart below.
   

   Model	Document required	Version
   HT750/HT1250	Professional.zip	D02.00.01A
   CT250/CT450	CT.zip	D02.00.01A

   (Note: if your computer does not recognize files of type .zip, please go to the WinZip homepage to obtain a copy of the necessary software. Click here for additional instructions for opening a .ZIP file)
   
4. To run the program click on the executable file.
5. Click icon on the pop up menu to verify the version of the patch program. See table above for the version reference.
6. Go to "Config" menu and select the "comm port setting to be used ".
7. Power up the radio, then program the radio by:
   a) Clicking on the correct Radio model - HT750/HT1250 or CT250/CT450 (See chart above)
8. There will be a message bar indicating the progress. Don't unplug the side connector or switch off the radio before the indicator disappears. Interruption during the programming process can cause the code plug to be corrupted.

Note: After update the radio will emit a continuous tone until the radio is powered down and the battery is removed.

1. Once you have downloaded the code plug patcher.doc file to your desktop.
2. Create 2 NEW folders on your desktop.
   
   • 1 called Professional.
   • 1 called CT.
3. Open the code plug patcher.doc file in Microsoft Word.
4. In it ycode_plug_patcher_Instructions.docou will find the 2 compressed files you need.
5. Double click on the file called Professional.zip.
6. Click yes to allow the OLE exception to be performed.
7. WinZip will open and display the files that are contained within the compressed folder.
8. Highlight all of the files in the WinZip window.
9. Then click and drag them to the Professional folder you created on your desktop. This will extract the files directly to that folder.
10. Double click on the file called CT.zip.
11. Click yes to allow the OLE exception to be performed.
12. WinZip will open and display the files that are contained within the compressed folder.
13. Highlight all of the files in the WinZip window.
14. Then click and drag them to the CT folder you created on your desktop. This will extract the files directly to that folder.
15. Once all of the files have been extracted into the appropriate folders you run the UpgradeKit.exe file.
    
    • Run it from the CT folder to upgrade the CT software.
    • Run it from the Professional folder to upgrade the CT software.