Batboard

xxx2fan

Thanks Dave wow that will be awesome, should get two units up with the parts unit.
Thanks again.

xxx2fan

Motorola Service Monitor question
Does anyone know if the scope card from a R2002C Scope Amplifier Module 01-P00413N002 RTC-4007B will work in a R2001A with a A2 Scope Amplifier Module 01-P00413N001 RTC- 4007A
Thanks for any info.

xxx2fan

My HP8924C keyboard DCU was bad. Replaced keyboard and keypad assy. Run diagnostics. Unit failed Spec A and receiver. Repace defective receiver synthesizer module. Repair fuzzy monitor. upgrade firmware from V6.33 to V8.04 Calibrate traceable to NIST with full performance evaluation. Rick was very n...

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I made up my mind found that Amtronix Instruments, Inc. is 62 miles from me. I talked with Rick he repairs these HP8924C and 8920 s too. I took it to him today. He is doing the repair, also a CAL so it will be in specs when I get it back. I want to thank everyone for the input on my problem with thi...

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thanks everyone jry how do i find the groups with the set of files / images firmware thanks for ton for all the info i'll do some testing and get back ,
thanks again for helping
think this thing is awesome svc monitor got to get back up

xxx2fan

I'm pretty sure thats where this unit came from I got it some years ago of of bay and had a paper that came with it from Amtronix. I will get a call to him in the next couple days I'm afraid to poke around too much and a parts unit is very expensive. This one has upgrade to 100W so i really want it ...

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i checked at test point one I/O board there's 5v DC there. There is a buffer board (KEYBOARD FILTERS) A2 that the cable from keyboard to IO board (HOST CONTROLLER) A16 goes through. The I/O board has +5V DC which the block diagram says it should. I don't know how to check to see if anything is at th...

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the HP08920-60395 A16 Host Controller Board For 8924C the leds D1-D4 when you boot it the 4 leds light up until beep then the go out. I've reseated the cables and the I/O board. but still the same no keys work at all.

xxx2fan

Can anyone tell me if the 4 leds on the HP 08920-60395 A16 Host Controller Board For 8924C should be on or flash. Trying to narrow down the problem with the keyboard. I checked the 10Mhz out the back it is spot on. I check power supply at the connectors. All voltages match the data I have downloaded...

xxx2fan

no I haven't this is a little over my head if you could give me a little help can I check it with my frequency counter. I also don't have a schematic of the unit at this time. Thanks for your help

xxx2fan

I have a HP8924C setup to come on like a HP8920. The unit comes on with TX screen. It says passed all test. But the front panel buttons will not do anything, also the Cursor Control knob, will change fields but when you push it nothing happens. If anyone can give me a little insight on where to star...

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Just wanted to let you know jry The two transistors Q20 and Q19 fixed the scope works great now. Got them installed half hour ago and been on since. Turned down intensity then turned off scope. Have checked it at times and it is working great. Want to thank you for your help very happy here everythi...

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ok Iwill get transistors for Q19 also
thanks for advice.

xxx2fan

removed the A03A03 RTC4021A board. and transistor Q20 fell into my hand.was very careful removing the board, parts ordered my old ECG cross , crosses MPSU10 ro ECG191 have some ordered will let you know what happens when I get parts.
Thanks I'm hoping this is the problem with the vertical.

xxx2fan

Thanks a bunch jry I'll get at it next week and follow your instructions. Will let you know how I make out.
Thanks again for answering

xxx2fan

On the 2200A I re seated the scope amplifier board. I checked the pins on the jumper. Now I have a line at the very bottom of the scope, I can move the trace to the left and right to fill the scope with a bottom with a line if I try to move it up position it will only come up to the 5 and gets wider...

xxx2fan

Thanks Andy for the heads up, I try to keep all my magnetic bowls on my rollaway tool box. Thanks I'll watch where I put them.

xxx2fan

thanks jry I'll check the 16 pin ribbon cable and try reseating the scope amplifier board there is a very small line about 1/4 vertical and the vertical position will not move also if I try the horizontal position it will not move from left to right. We are going to OBX NC in the morning but as soon...

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I have a R2200A that has no horizontal sweep. Has a dot in the middle of the scope. you can't move the spot with the position control. Anyone have an idea where I should look any pointers. I have a manual for the unit, But I'm lost on this one.LV power supply voltages check good. Thanks for any help.

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Just to let everyone know the LV power supply is alive and well. Also found two traces on board burnt jumpered with wire.
Everything looking good.
Thanks to all for help.
xxx2fan

xxx2fan

Auditron
Thanks for your input I'll consider the 2n3904 for the m9648 slot have some on the way, if you have any other ideas all will be considered.
Awesome the internet, all the way from Brazil and we can share info Thanks again

xxx2fan

Going at this one more time. After doing bunches of looking the M9706 says it converts to MJE370, but that is a PNP, so the comparable is MJE520 which is Darlington NPN. That converts to a ECG 184 in the old ECG book I have. Hope someone gets some help out of this. its a to126 case vice To92 but I h...

xxx2fan

Anyone that needs 48-869706 cross reference I finally found a place on the net that has many of the 48-xxxxxxxx cross if any needs thought I would share the web site.

https://www.mikesarcade.com/cgi-bin/spi ... OSSREF.txt

xxx2fan

Does anyone know a replacement for transistor M9706 48-869706, I've looked and looked and cannot find anything to cross it to and can't find one anywhere.. Sure would like some help if someone knows what would work in its place. Also am looking for M9648 replacement think a NTE 128 might work in it'...

xxx2fan

I have a HT1250 firmware R05.14.03 Sample codeplug from software. The radio will not power up when you turn it on with the Volume control/ON/OFF switch. It seems dead. I've replace the volume control, bumped the firmware to the above and programed a sample codeplug for the radio and that didn't help...

xxx2fan

Thanks I had never seen the BNC before on any info or manuals, my buddy just got 2 off of bay and they both have bnc connector and switch on rear. Both are in need of LVPS repairs.
Thanks again for the info. Guess if they don't come up will have to try the switch in other position, it's not marked.

xxx2fan

Hi I have another question I cannot find in any operators manual or service manual I have. That shows it. Have R2200A manual from Motorola Hard Copy. There is a BNC connector and switch one the rear of the R2200B service monitor looking at the rear it's on the right side other side from fan, that I ...

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Thanks Dave two R2210B were listed on ebay and state they have Spectrum Analyzer, I could see nothing on the scope section with the analyzer, I thought they were listed wrong but was not sure if it was more than a option card. Dave I can always count on you to answer and with good information, thank...

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Hi question
Can one add a Spectrum Analyzer be added to a R2200B with an option card. I don't know so asking. If it is possible.
Thanks.

xxx2fan

Thanks Dave will anything swap between the two units above, or they two different units. Thanks for all the info I was wishing i could use the card C unit in the A unit or the power supply from the A in the C unit. I've looked and didin't find info on this at 75 though I may be slipping on searching...

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ok Dave thank you very very much. This unit has a Bad J2 card I have a C unit with no power supply and the cards are all suspose to be good. will you please look at my other post about LVPS and let me know if anything is able to be swapped between the two units. Boy we are sure lucky to have you her...

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I have a Motorola Service monitor with the numbers R-2001A/U serial number 415 KFK 0006 Does anyone know what the "U" stands for I have taken a picture of the TAG but can not figure out how to post it here. Thanks for anyone that knows, I've never seen a /U listed anywhere I've looked. Tha...

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I just went and checked the number is R-2001A/U serial number415 KFK 0006 i even took a pic of it to double check it.
I've never seen a " U " after the slash, so I have no Idea. I hope maybe Bernie can tell me what I have.
Thanks again for answering my questions Still trying to learn.

xxx2fan

Thanks Bob was hoping it was the same i take it the the A2 scope amplifier card from the R2002C will not work in the R2001A model either. The R2001A has a /U and I do not find what the U stands for either. Learning here or trying to Thanks for all the help.

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Hi Was wondering if someone knows which LVPS are the same. Able to Swap between units. I'm most interested to know if a PS from a R2001A/U will work in in a R2002C/HS unit.The R2002C/HS was bought for parts without a PS. But should end up a working unit if I can move the PS If that is not possible a...

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Tks that was a place I never thought to look as it had 14 volts at battery. the fuse is missing. Have to get some this week.
Guess you loose it at 70 something. But still like to play with the radios. THANKS

xxx2fan

Hi I have a R2410A it has batteries installed. But they need replaced. We just replaced batteries in my buddies R2200 and it reads 14.4V now before it read something like 13.2V with the old batteries in it. . My R2410A reads 00V on the lcd display. If i check it with a VOM meter at the battery termi...

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Ok thanks I will be looking at in a few days as I'm on duty at my plant now.
Thanks again for the help.

xxx2fan

Hi I got a R2100 off of the bay and the BFO Potentiometor/Switch is bent and seems flakey, I turned it off and the monitor seems to be working in all other aspects. I have almost gone blind trying to identify the Pot for the BFO and figure out a replacement looking at the service manual PDF on the c...

xxx2fan

Take the radio apart and try to reinstall the ribbon traces. Have found this on some of Fire Dept. radios. Most likely dropped or hard service.

xxx2fan

As a Chief Officer in a Vol.Fire Dept. Do not change off of HIGH power. Instead you may want to look into changing your batteries to Motorola HT1250 7.5V 1800mAH Li-ION Replacement Two Way Radio Battery "Motorola HT1250 7.5V 1800mAH Li-ION Replacement Two Way Radio Battery by Titan. Fits And Re...

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Thanks Can you tell me how to get the unit to proceed to the regular test screen. Guess I am missing something as it comes to this screen and I just don't know how to get it to the other test screens. Guess I should try to find a manual on the R2024D models. Thanks again for any futher info you coul...

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Have a Motorola R2024D upon power up it comes up with a checker-board display and has in the center
< Remote Self-Test> anyone have any ideas how to fix or point me in the right direction to fix.
Thanks for any help

2fan

xxx2fan

Dave Thanks for the run down on Monitors. I always read your post and you have a wealth of information. I still have 3 Motorola monitors I'm will be trying to restore to working order this Winter. I hope to make at least 2 good ones from the three.I am sure I will have questions for you. As I said t...

xxx2fan

Panasonic® BR-C 3V/5000mAh Lithium Battery w/ Solder Tabs Model: LITH-14-1PANA | Catalog #: 55031959 This Panasonic BR-C 3V/5000mAh Lithium size "C" battery with The above is available from Radio Shack in my area. You may be able to wire tie it up someplace and extend the wiring to it.

xxx2fan

Dave Are the extender cards available for the R2200 and R2008 series, or were the for the depot. If they are available would you have the part numbers for them. I'd order a set if they are. Thanks again Nice tip also about getting better results alignment without the cards. Thanks for your great pos...

xxx2fan

Dave Your 100% right. on both counts. As for the model I guess I can't read too well getting old. The correct model is R2200B/HS. and your suggestion corrected the problem, all is well now working perfectly. I do thank you for your time. And I'll double check my post before I hit the button next tim...

xxx2fan

ok think I have found what could be the problem. Don't know where to look though I have svc manual. When I put the unit in Gen I get <over power > indication> When I switch unit to Hi Gen I do not get the over pwr indication. and the Service monitor will set off the pagers. Looks like I have an issu...

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I have a question about entering tone codes in the above unit. My Vol. Fire Dept uses Tone A: 2576.8 Tone B: 1743.9 I have enterend the frequency 453.1250 When I try to enter the tone a all I can enter is 2576.0 it goes back to the number 2 digit, it will not let me go to the .0 digit to enter the ....

xxx2fan

Thanks
I can always count on you to get my head streight. I'm in a learning process here. Your info is always greatly appreciated.
Thanks again for your info
2fan

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