EEVblog Electronics Community Forum
Electronics => RF, Microwave, Ham Radio => Topic started by: CaptDon on January 17, 2024, 03:08:50 pm
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Would any of you radio service shop guys have a manual for the Motorola R-1010A 1MHz to 520MHz signal generator? I bought it from Ebay, the power supply board needed repair. Currently 2 of the 4 P.L.L.'s are unlocked. I need a service manual showing how to align the unit. Any help greatly welcomed! I couldn't find anything useful online. Thanks!!
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Take a look at the SM for the Wavetek 3000 signal generator.
http://ftb.ko4bb.com/getsimple/index.php?id=download&file=Wavetek/Wavetek_3000_Signal_Generator_1_-_520_MHz_Service_Manual-Wavetek_3000_Manual_complete.pdf (http://ftb.ko4bb.com/getsimple/index.php?id=download&file=Wavetek/Wavetek_3000_Signal_Generator_1_-_520_MHz_Service_Manual-Wavetek_3000_Manual_complete.pdf)
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RFDx, you are a God send!!!! Thank you very much indeed!!! That is identical to my unit. I am servicing module by module. The PLL #1 was going in and out of lock. It had a bad 4558 / 1458 dual opamp messing up the loop control voltage. It is fixed and working well. I also replaced the filter caps for the 5vdc regulator in the PLL #1 module. It never had any bulk capacitor on the 5 volt side of the 7805. Also, the PLL #1 ONLY gets power ground through the mounting screw!!!! Wow, bad design!! I am so anxious to get this thing running. It does have R.F. output but very erratic due to two of the PLL's still being unlocked. Thanks again!! I'll report the progress.
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RFDx, Thanking you again!!! I got the unit fixed and it would have been impossible without your help. Almost every MC4558 in the whole unit was wiped out along with several 20vdc capacitors which run at 18VDC. I think the power supply must have went nuts and went into some form of overvoltage. It looks like someone turned every adjustment in the unit trying to make it work again. It was a royal P.I.T.A. to get everything back into alignment.