GTX Mobile won't read/write

This forum is for discussions regarding all aspects of Motorola radio programming, including hardware, computers, installation and use of RSS/CPS, firmware upgrades, and troubleshooting. There are subforums for discussions of codeplugs, and also for software/firmware release notes and issues.

Moderator: Queue Moderator

Post Reply
kj6ko
Posts: 36
Joined: Sun Oct 30, 2005 7:47 pm

GTX Mobile won't read/write

Post by kj6ko »

Hello all..
I have a 900 GTX mobile that won't read or write. When prompted by the RSS, the "rss" shows up on the screen, but the RSS then says comm failure. RSS works fine on other GTX's. Bought it this way with the known problem, but thought I could fix it. Any easy fix or is it parts now? Otherwise radio works fine. Tried separate head...same issue. Looked all over it for bad trace or solder with a jewelers loop...nothing obvious.

Thanks...
User avatar
kcbooboo
Batboard $upporter
Posts: 2117
Joined: Wed May 01, 2002 9:03 am

Re: GTX Mobile won't read/write

Post by kcbooboo »

CR151 is about the only part that isolates the radio's TX data from the BUS+ line. Obviously the BUS+ is getting RX data as the radio is displaying "r55".

On my manual, CR151 is a dual diode and is under the board along the front edge, to the outside of the connector that goes to the control head.

PM or direct e-mail for more info if you need it.

Bob M.
Post Reply

Return to “Radio Programming”