R&S CMU200 and CRTU-RU identity recovery - Page 1
Forum section: electronics / testgear

author: hafrse
author_rank: Regular Contributor
timestamp: December 14, 2018, 12:59:46 pm
content: Hello,I have a CMU200 and a CRTU-RU. The CRTU-RU stopped booting , no bios information etc... Suspected a CPU problem. I replaced the front panel (including the CPU board ) of my CRTU-RU with my CMU200 but using the disk from the CRTU-RU. Booted as version 4.34 and all ok again, I can see that the identity is CRTU-RU with the correct serial number. all oK.Now to the problem:I replaced back the cmu200 front panel to my CMU200. Booted with the CMU200 hard disk, system but surprisingly started as a CRTU-RU unit with version 5.21 instead of a CMU200 !!!! all options from the CMU are not recognized since they are not CRTU options... Also , I have never seen a CRTU-RU with version 5.21....I performed a software update using "Software Update After Board replacement" , same problem, it still give me system CRTU-RU and the serial number from the CRTU-RU and not from the CMU200!It seems that the CMU200 is infected by my procedure above....where is this informtion about the system if it is a CRTU-RU or CMU-200 and the serial number? and how can I recover?man thanks in advanc!Goerge

author: CJay
author_rank: Super Contributor
timestamp: December 14, 2018, 02:03:25 pm
content: Clear the BIOS and see if that helps

author: hafrse
author_rank: Regular Contributor
timestamp: December 14, 2018, 02:16:57 pm
content: Quote from: CJay on December 14, 2018, 02:03:25 pmHi,I have attached a keyboard to the CMU200 and did a Load CMU defaults from the BIOS menu, did not help.Thanks

author: hafrse
author_rank: Regular Contributor
timestamp: December 14, 2018, 02:30:27 pm
content: I also checkd the Identity.dat file, it still says CMU:/***************************************************************//***************************************************************//************************* CMU IDENTITY ************************//***************************************************************//***************************************************************/GENERAL INFORMATIONSerial number: 109xxx/002CPU and memory:CPU (FMR) FMR6Memory 256 MBBSW/FSW V5.01Statistics data:Firmware versions:RXTX_1 CP-SW 08.50, 2006-05-02Available options:rxtx1 V8.50 02.05.06PMGR_RX_DSP_1PMGR_TX_DSP_1PMGR_AUDIO_DSPAUXTX_1AUXTX_2CMU-B21Var14CMU-B56Var14CMU-B54Var14COPROCCOPROC_FULL 3.04CMU-B83 X3.24m (Var. 22)CMU-B89 Rev. 1CMU-B52Var14CMU-B53Var14CMU-B212G_SignallingSpeechcoderBluetoothCMU-B66 included in B68CMU-B76 included in B78DIGDIG_HWC HWC: 4DIG_FMADC 1.....

author: CJay
author_rank: Super Contributor
timestamp: December 14, 2018, 02:55:22 pm
content: Does the serial number match the CMU200 or is it the serial number from the CRTU-RU?

author: hafrse
author_rank: Regular Contributor
timestamp: December 14, 2018, 03:09:45 pm
content: Quote from: CJay on December 14, 2018, 02:55:22 pmHello,no, it is the serial number from the CRTU-RU. I suspect that the digital board (A7) is holding this information now in my CMU but do not know how to revert to the CMU identity.Thanks

author: Ice-Tea
author_rank: Super Contributor
timestamp: December 14, 2018, 05:17:54 pm
content: Check "list software" in the debug menu. Perhaps one of the older versions is not affected?

author: hafrse
author_rank: Regular Contributor
timestamp: December 14, 2018, 07:27:56 pm
content: Quote from: Ice-Tea on December 14, 2018, 05:17:54 pmTried that too, switched software version, same problem. I also tried to build a new HD image from an image file I created a time ago from my working CMU200, same problem. System is CRTU-RU .Thanks

author: Qw3rtzuiop
author_rank: Frequent Contributor
timestamp: December 15, 2018, 12:17:24 pm
content: I experienced a similar problem. The serial number must be stored somewhere on the FMR. Maybe on one of the EEPROMS.

author: hafrse
author_rank: Regular Contributor
timestamp: December 15, 2018, 12:37:32 pm
content: Quote from: Qw3rtzuiop on December 15, 2018, 12:17:24 pmHello,I have replaced the FMR 6 board with one I had before from a working CMU200 (spare part) but did not help, this CPU starts now as a CRTU-RU. I suspect the digital board(A7) runs now as a CRTU system after the original CMU200 was in the CRTU-RU for test reasons.Thanks