After I receive over 25 CDM radios with same issue will not power-up I bench check this issue I found a open thru Q101 to on/off control circuit, this circuit is looking for a low from 5VDC originated by ingnition or control head circuit it self. Q101 feed directly to U101 pin 6 or PG0-XA13, you can...

If I read things right it sounds as if somewhere along the lines the radio had been dropped on it's antenna one too many times. Along with the other suggestions you might want to look under the shield where the switching circuit is. It is possible that one of the coils or parts under there have cra...

I have in bench a HT750 this unit will trx at first I replace the RF jack this was in bad shape due to a fall, no damage to PC board or components after 3 weeks the customer return with same issue. I removed the battery and install battery eliminator to check current draw it was good 1.2 amp means m...

I have see this problem over 100 times and have found that contact at minitor V were dirty or this are damage due to fire or corrosion built-up check this contact clean with alcohol , dont use a sharp metal to clean contact they will be damage ( used tooth pick or old tooth brush).

Here is pin out here is basic looking from the front of connector 9 8 7 6 5 4 3 2 1 10 Pin Name 10 analog input 1 FLT A+ 2 5 VDC 3 HOOK 4 Ground 5 MIC 6 PTT IRDECODER 7 BUS + 8 Head set Audio 9 Analog Input 3

Here is part number you need to perform check out in HT1250/750 0985613Z01 check with motorola online for cost.

Check your Mic the MC2000 requirer a specific mic to work properly in some model. Check your audio circuit this is located at top right side of radio main board, also check this location R0217 & R0218 this are audio input for ASFIC to U 0200-D7.

Here are the part numbers you asked for:
MCS2000 channel select knob 3602100U01
volume knob 3685804A02
front housing 1502100U14
You may find these parts at your local Motorola dealer. I checked with Motorola Online and these part numbers are good.

Here is my foot on this issue it have been hard one for me and other,,, I have seen this and tested 12.5 vdc enter pin 10 in accessory connector or J501 will pass VR510 zener diode also R510 both in parallel form there will get to R 530 AND TP530. On TP 530 you must read 12.01 if your power supply i...

You have started in right location but no cigar,, there is fuse and is located near the + battery contact it a little white chip smt type, use a meter to check this fuse: also the on/off swch may be bad use meter to check this also...

Yes there is a battery in HT1250 radios an not necesary true in all model here is parts number MS621 you can find this at Radioshack or Mouser also in Digit-key average cost is less that $3.00. Location once you open radio see on/off swch is with your eye go toward flex connector you will see a sil...

Yes there is a battery in HT1250 radios an not necesary true in all model here is parts number MS621 you can find this at Radioshack or Mouser also in Digit-key average cost is less that $3.00.

I will check this Thank You!

We have been sending our CDM 750 & 1250 radios to Motorola for a problem that has haunted this model of radios for a long time. The problem is that the radios will lock-up in EEPROM or BOOT Enable. Motorola has replaced the main board on every unit we have send at a cost of over $270.00 each We ...

Did you check your CPS default? ( Type of Mic)

Im looking for good vendor for Advisor II pager LCD assembly MOL do not have a part number

Just reprogram radio with other similar code plug (clone radio) an wait until radio reset before removing your program cable... I will used a lower RSS or original version of software as much is possible.

I further check this issue there a message from MOL FSB10112 please check built code date 4010 thru 7250 you may have to replace J401 or resolder control head ground contact.

kvblax wrote:does anybody know what each of the options in the Advanced Engineer Data do, some of them i can figure out, need help with the others. if there is anyone that knows this let me know please, thanks

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I will test some of this I have over 600 units to play with..

Hi I have this problem with are new EMS supervisor vehicles as you notice the AC will run all the way to rear seat and also the rear A/C control wires for the fan, the On star system ran the same location & A/C. We found a clean point at 10 inch from rear A frame location to center of vehicle.

Try to reload firmware R05.14.00 not the CPS

I try to reprogram firmware and it work for short time, I will also check control head connection J401 look at pin 4 ground and pin 11 for on/off command if this look to wide or damage replace this 12 pin connector I have work in pass for me.

Please check ASFIC part or the radio here all tone generated or U0404 also check your radio setting it may over look squelch setting in CPS

See J0401 were the control head connect to it may have bad solder join on the pin, if this dont work check Q 0641 it may be open..

Hi
There is internal fuse is located near the A+, the A+ contact is inside one please, you cannot see if it open you must used multy meter an OHM check this. If this messure good please check TP 406 it must have 7.5 VDC if not replace swc.

Send the unit to Motorola it only cost $ 75.00 to repair or replace....

Go to Motorola Online you can down load update kit number 51R07183A01 please use a win98 any other like system will corrupt your radio... just for firmware update I have this software if need it...

Trun radio off remove all power,, trun off power supply.. removed control head and top cover inspect J0401 it may have cold solder join at this location or replace this connector, if you need parts number I can get this to you...

This problem is not easy each model is given a firmware or default pre-program in EEPROM chip ( motorola control)... I recomend not swap control head it may damage the radio.

Try to reloade radio program if this don`t work try firmware, this problem is cause by rapid current drain during start-up or jump start other vehicle... protect your ingnition circuit with a diode or a fuse..

Please check you current draw with ammeter a good reading is 1.5 amps at 4.5 to 5.0 watts if this to low like .6 amps you do have a bad PA. Also check your battery contact & antenna jack screw.