- MOTOROLA R2670 SERVICE MANUAL HOW TO
- MOTOROLA R2670 SERVICE MANUAL MANUALS
- MOTOROLA R2670 SERVICE MANUAL DOWNLOAD
So I needed some point to start the basic diagnosis. Having the manual, the SMB RF cables started to make sense to me: Luckily I was able to borrow such an instrument (an Advantest R3131 9kHz. Your average scope simply won't show anything if you try to follow a 1.7GHz signal. Was easy for me to discover that I'm in the need of some RF instrument (preferably a spectrum analyzer) to do Having this comprehensive information, it For each board there is also a fine description of how it works.
MOTOROLA R2670 SERVICE MANUAL MANUALS
Various other old motorola manuals additionally to my needed service manual.Īs it is quite usual with such old equipment, the service manual contained full schematics and parts lists of theīox.
Cool service, the DVD arrived some two weeks later and contained
MOTOROLA R2670 SERVICE MANUAL DOWNLOAD
I ordered that DVD and got the RLN-4120 manual in advance asĪ download link short after placing the order. Manual compilation on a DVD for a reasonable price. I found an offer from Canada, some kind of ancient Motorola Using this designator with your favourite search engine, Still searching around for the manual, I finally discovered the notation "RLN-4120B" beeing the service manuals Please read his info page and consider supporting this great site. As many of these sites, it is run by a private person, making no profit. In case you're looking for these files, have a look at KO4BBs manual collection: (go to Manuals and search for R2600). In the meantime, the forum mentioned above disappeared. I decided to download these images and keep themįor later experiments, once the unit would be in a more useful working state. I found an internet forum, search for R2600 where people exchangedįirmware and option EEPROM images, which looked interesting to me. No idea where to start without any knowledge of the signal routing.įinding useful information turned out to be somewhat difficult. Lots of neat SMB cables route lots of unknown RF signals from one RF PCB to another. Opening the box, I was pretty fast persuaded that I'd have to find a service manual before attempting to repair anything: See if I would be able to repair this thing. After a few days, I took the challenge and decided to The unit aside and thinked about scrapping or reselling it. So now I was the proud owner of a pretty useless Radio Test Set, since none of the RF functions worked. Baseband audio analysis worked, using the baseband signal input.A quick check in generate mode showed that there was some kind of a signal at the gen out port, but neither of the expected frequency nor amplitude.When the self calibration finished, there were no error messages and I was able to play around with the various menus and settings.The unit powered up running a quite lengthy self calibration procedure.After receiving and unboxing, I've learned pretty fast, what Its description said something like "I've tested a little bit of the functions, which appear to work, other functionsĪre not plausible to me.
MOTOROLA R2670 SERVICE MANUAL HOW TO
But that was only once.Įverytime you switch it on now it goes into the self Cal Mode and then the flashing Copyright Screen and LED's.Motorola R2600B R2600 Radio Communications Analyzer Repair or how to jump start with RF electronicsįor no particular reason, I bought this particular pretty looking piece of electronics at our favourite electronics scrap yard It did on one occasion when I switched off and on it sprung back to life. I've checked all the voltage rails & all are OK as well as the 10Mhz Osc.
I then left it for a few days, turned it on and it goes into auto Calibration and when it completes the screen goes blank and then the copyright notice flashes on and off as well as the red LED's forĪntenna & Gen out.
So I switched it off for a few hours and when I came back to it and turned it on, Yes you guessed it, it's no longer worked on those ranges as mentioned above. Then I used it in that mode for a few hours and it worked Ok. I thenĭe-powered it a few times and it came back every time. I've since cleaned, checked and Buzzed out the ribbon cables, because only once when I re-seated the 3 going to the control board it started to work on the 5Mhz to 100Khz ranges. It worked fine in the 10Mhz and 25Mhz ranges, but when you pressed the more soft key as soon as you selected a range between 5Mhz and 100Khz the unit just locked up and the only way out of this was to de-power the unit from the mains. The problem I have is after I replaced the battery on the Control Board and Replaced ALL the Electrolytic Capacitors on the Power Supply Board, The Unit came back to life, and it worked onĪll functions except in Tracking Gene Mode. Can anyone Please help me out, I'm looking for a SERVICE Manual for the Motorola R2600 Test Set
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