General Information
All of these radios belong to the same family and are covered under the same service manual, hence, most of the information should be common to all models.
BEWARE: Take note of the following we received, "It seems after attempting to write the codeplug of a NEW MCS2000, I got a fail message on the screen. It corrupted the codeplug and this brand new radio had to be sent back to the big M. I talked to the local Motorola dealer and they said that programming these radios with older RSS than they had last been programmed with would indeed corrupt the codeplug".
Are you having a problem with the control heads on your MCS2000? There is a bulletin out the 5 volt regulator is falling off of the board in the radio (not the head). It should be U500 and its next to the audio IC. Where the metal fingers clamp down the board you need to reflow the solder to this regulator if it has not already come undone. Also, cut the middle finger off the metal clamp that presses down on it. This clamp puts to much pressure on the solder joint. The common failure is the 01/90 fail code or the radio is just plain dead. It has been rectified on the later models after 1999.
It may be possible to bring a GM/GP900 which has a corrupted codeplug in it back to life. You will need to use MTSX Lab or Astro Lab RSS in order to do it, both will work fine.
You will not be able to unpack the codeplug when reading it, of course, but you can read/write to the radio fine. You need to use the F4 Read/Write Radio with No Pack/Unpack option to get the corrupted codeplug out of the radio.
The first thing you can try and do is get the codeplug out and save it to disk (use the F6 menu to save the archive). Then, open the codeplug in a HEX editor and take a look at it. Quite often what happens is that the model number gets corrupted during write and the RSS no longer recognizes the radio. If this is the case, you should be able to fix the model number and dump it back into the radio (reading it back into RSS using the F6 menu and writing with F4), and it should be okay.
Otherwise, you can try reading a good codeplug for this radio from disk (using the F6 menu for reading and not F3), and reprogram the radio with the good codeplug from this radio.
Pinout for the Accessory Connector Programming Cable
Pinout for the Microphone Connector Programming Cable
This is the model breakdown chart for the MCS2000:
| M | 01 | K | L | M | 9 | P | W | 6 | A | N | SP01 |
| Type of Unit | Model Series | Frequency Band | Power Level | Control Head | Channel Spacing | Primary Operation | Primary System Type | Specification Level | Version | Unique Model Variation | "SP" Model Suffix |
| M Mobile | 01 Model Series | F 66-88 Mhz (MidBand) | F 1-10 W | D Duplex | 1 5 kHz | A Conventional/Simplex | A Conventional | 4 Standard Specifications (Model I) | A Version Letter, Major Change | N Standard Package | SP01 Special Model |
| J 136-174 MHz (VHF 1) | G 10-15 W | H HandHeld | 2 6.25 kHz | B Conventional/Duplex | B Privacy Plus | 5 Standard Specifications (Model II & III) | |||||
| K 146-174 MHz (VHF 2) | H 25 W | L Limited Control; Limited Display (8 digits)(Model I) | 3 10 kHz | C Trunked Twin Type | C Clear SMARTNET | 6 High Specifications | |||||
| R 403-470 MHz (UHF 1) | J 30-35 W | M Rotary Knob; Standard Display (1x14 digits)(Model II) | 4 12.5 kHz | D Dual Mode Trunked | D Advanced Conventional Stat-Alert | ||||||
| S 450-512 MHz (UHF 2)* | K 40-50 W | N Keypad; Standard Display (2x14 digits)(Model III) | 5 15 kHz | E Dual Mode Trunked/Duplex | E Enhanced Privacy Plus | ||||||
| U 806-870 MHz (800 MHz) | L 100-110 W | 6 20/25 kHz | F Trunked Type I | F Nauganet 888 Series | |||||||
| W 896-941 MHz (900 MHz) | 7 30 kHz | G Trunked Type II | G Japan Specialized Mobile Radio (JSMR) | ||||||||
| 9 Variable/Programmable | H FDMA Digital Dual Mode | H Multi-Channel Access (MCA) | |||||||||
| J TDMA Digital Dual Mode | J Coverage Plus | ||||||||||
| K Single Sideband | K MPT1327 Public | ||||||||||
| L Global Positioning Satellite Capable | L MPT1327 Private | ||||||||||
| M Amplitude Companded Sideband (ACSB) | M Radiocom | ||||||||||
| P Programmable | N Tone Signalling | ||||||||||
| P Binary Signalling | |||||||||||
| Q Phonenet | |||||||||||
| W Programmable | |||||||||||
| X Secure Conventional | |||||||||||
| Y Secure SMARTNET |
*450-520 on some models. Values given represent range only; they are not absolute.
Service Manuals
Here are a listing of the Service Manual part numbers for the MCS2000:
Pinout for the CS Option Connector
1 A+ CONT 2 +5V 3 2.1 MHz 4 GND 5 DISC 6 9.3 7 AFIC PRE-EMP OUT 8 ASFIC MIC AUD OUT 9 AUX RX IN1 10 UNIV IO 11 GND 12 RESET 13 C CTRL HD2/O KEYFAIL 14 AUX TX IN1 15 RX DATA/KID 16 RTS/DVP WE 17 CLK 18 SPI TX DATA 19 MISO 20 O JABBA INT/C DTMF DATA RDY 21 O JABBA SEL/C DTMF SEL 22 ASN INT/OPT TX 23 ASN SEL/OPT CTSB 24 N/C 25 RSSI
Pinout for the SS Option Connector
1 A+ CONT 2 +5V 3 2.1 MHz 4 GND 5 DISC 6 9.3 7 AFIC PRE-EMP OUT 8 ASFIC MIC SUD OUT 9 AUX RX IN3 10 UNIV IO 11 GND 12 RESET 13 C CTRL HD2/O KEYFAIL 14 AUX TX IN3 15 RX DATA/KID 16 RTS/DVP WE 17 CLK 18 SPI TX DATA 19 MISO 20 O JABBA INT/C DTMF DATA RDY 21 O JABBA SEL/C DTMF SEL 22 ASN INT/OPT TX 23 ASN SEL/OPT CTSB 24 N/C 25 RSSI
Pinout for the Accessory Connector
1 SPKR+ 2 INT SPKR+ 3 SPKR- 4 DIGITAL GND 5 BUSY 6 BUS+ 7 I/O 8 8 I/O 5 9 EMERGENCY 10 ANALOG GND 11 FIL AUD OUT 12 AUX RX IN2 13 MIC IN 14 SW B+ 15 IGNITION 16 I/O 2 17 LH RESET 18 BUS- 19 SCI RX DATA 20 I/O 4 21 I/O 3 22 RSSI OUT 23 EXTERNAL MIC IN 24 AUX TX IN2 25 UNIV IO OUT
Pinout for the Control Head Connector
1 INT SPKR+ 2 INT SPKR+ 3 MON/BUSY/OPEN LH RESET 4 PTT/BUS- 5 CLK 6 SPI TX DATA 7 GND 8 RX HI 9 MIC IN 10 C CTRL HD1/O DVP WE 11 C CTRL HD2/O KEY FAIL 12 C CH EN/O KID 13 C VOLUME/O GND 14 C OPT SW B+ SENSE/O BUSY 15 AUX/BUS+ 16 +5V 17 PWR ON 18 SW B+
Pinout for the Microphone Connector
1 OPT SW B+ 2 SPKR- / KEY LOAD 3 MON / BUSY / KID 4 GND 5 MIC / ON-OFF 6 PTT / BUS- / /WE 7 AUX / BUS+ / KEYFAIL 8 SPKR+ / HANDET AUDIO
Pinout for the Keyloader Cable
The pinout of the MCS2000 keyloader cable (TKN9152A) looks something like this:
KVL KVL MIC Conector RJ45 o1 o10 2 Keyload 2 o2 o9 6 KID 3 o3 o8 7 /WE 6 O o4 o7 8 Keyfail 7 o5 o6 9 Ground 4 ( O is screw)
Pinout for the Hand-Held Control Head Cable
Radio Connector Description Control Head 18 Pin 15 Pin 1 SPKR+ 8 2 SPKR- 7 3 HUB 6 4 PTT 2 5 SPI CLK 13 6 SPI DATA 1 7 DIG GND 3 8 N.C. 9 MIC 11 10 A1 4 11 A2 5 12 N.C. 13 WIPER 10 14 N.C. 15 N.C. 16 +5V 15 17 A+ 12 18 SW B+ 9
Out Of Band Information
Out of band for the GM900/MC2100/MCS2000 is similar to the MTSX out of band hacks.
