Motorola Radius Cm200 Cm300 Pm400 Detailed 6881098c00 A Manual

							Notes For All Schematics and Circuit Boards2-5
5.0 Notes For All Schematics and Circuit Boards
* Component is frequency sensitive. Refer to the Electrical Parts List for value and usage.
1.Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads 
(pF) or microfarads (µF).
2.DC voltages are measured from point indicated to chassis ground using a Motorola DC 
multimeter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in 
series with the voltage probe to prevent circuit loading.
3.Interconnect Tie Point Legend: 
Signal Name Signal Description
16_8MHz 16.8MHz Reference Frequency from Synthesizer to ASFIC
3V 3V RF regulator
5V 5V RF regulator
5V_CH Optional 5V for Control Head
9V  Regulated 9.3V Supply Voltage
9R 9V to enable RX_INJ when RX_EN is active
ASFIC_CS ASFIC Chip Select
B+ 13.8V Supply Voltage
BATT_SENSE Battery Voltage Sense Line
BOOT_EN_IN_CH Boot Mode Select
BW_SEL Select BW (12.5 KHz, 25 KHz)
CH_ACT Channel Activity Indicator Signal (Fast Squelch)
COMM_DATA_SEL_CH Display Driver Command/ Data Select
D3_V3 Regulated 3.3V supply voltage for Voice Storage
DEMOD Audio Output Signal from the Receiver IC
DETECTOR_AUDIO_SEND_BRD Flat Audio to Option Board
DISPLAY_CS_CH Control Head Chip Select
EMERGENCY_ACCES_CONN Emergency line to switch on the radio voltage regulators
EMERGENCY_SENSE Emergency sense to µP
EXTERNAL_MIC_AUDIO ACCES_CONN External (from accessory connector) microphone input
F1200 Interrupt line from ASFIC CMP
FILT_SW_B+ Switched 13.8 V supply voltage
FLAT_TX_AUDIO_INPUT_ACCESS_CONN Flat TX input from accessory connector
HANDSE RX_AUDIO_CH Handset Audio Output
HOOK_CH Hang-up switch input
HSIO High Speed Clock In / Data Out
IGNITION Ignition Line to switch on the radio’s voltage regulator
KEYPAD_COL_CH Keypad Matrix Column
LOC_DIST Enable Attenuator for RX line
LSIO Low Speed Clock In / Data Out
MIC_AUDIO_CH Microphone Input 
						

							2-6MAINTENANCE
MIC_PTT_CH Microphone PTT Input
MOD_IN Modulation Signal from ASFIC
MOD_OUT Modulation Signal to the Synthesizer
ONOFF_SENSE On off sense switch
OPT_DATA_R_OPRD DATA/Ready Request from Option Board
OPT_EN_OPBD Option Board Chip Select
PA_BIAS PA Control bias voltage
PA_CURRENT Not used
POST_LIMITER_TX 
AUDIO_RETURN_OPT_BRDFlat TX Input from Option Board
PROG x IN ACC y General Purpose Input x accessory connector Pin y
PROG x INOUT ACC y General Purpose Input/Output x accessory connector Pin y
PROG x OUT ACC y General Purpose Input x accessory connector Pin y
PWR_SET PA Power Control Voltage
RESET Reset Line
RSSI Received Signal Strength Indicator
RX RX signal
RX AUD RTN Option Board Input/Output of Receiver Audio Path
RX_AUDIO_OUTPUT_ACCESS_CONNFlat or filtered audio to accessory connector
RX_EN Enable Receiving
RX_INJ RF signal from VCO into the Receiver
SCI_CH Bi-directional serial communication line
SHIFT_R_CS SPI Chip select for the Control Head
SPI_CLK Serial peripheral interface bus CLOCK
SPI_MISO Serial peripheral interface bus data IN
SPI_MOSI Serial peripheral interface bus data OUT
SPKR- Negative Audio PA Speaker Output
SPKR- Negative Audio PA Speaker Output
SPKR+ Positive Audio PA Speaker Output
SQ_DET Squelch Detect Signal
SYNTH_CS Synth Chip Select
SYNTH_LOCK µP Clock Lock Signal
TX AUDIO_RETURN_OPT_BRD Option Board Output to Transmit Audio Path
TX AUDIO_SEND_OPT_BRD Microphone Audio to Option Board
TX_INJ RF signal from the VCO to transmitter PA
TX_EN Enable transmitting
UNMUTED RX_AUDIO_SEND_OPT_BRD Unmuted filtered audio to option board
uP_CLK µP Clock signal
VoL_INDIRECT Volume Pot Input
VOX Voice operated transmit level 
						

							Notes For All Schematics and Circuit Boards2-7
VS AUDIO_SEL Switch signal to Enable option board audio output signal
VS GAIN_SEL Voice Storage Gain Select line
VS_MIC Voice Storage Audio Signal to microphone path
VS_INT Voice Storage Interrupt line
VS_RAC Voice storage Row Address Clock Signal
VSTBY 3.3 V supply for µP when the radio is switched off 
						

							2-8MAINTENANCE
Notes 
						

							Chapter 3
SERVICE AIDS
1.0 Recommended Test Tools
Table 3-1 lists the service aids recommended for working on the radio. While all of these items are 
available from Motorola, most are standard workshop equipment items, and any equivalent item 
capable of the same performance may be substituted for the item listed.
Table 3-1   Service Aids
Motorola Part 
No.Description Application
RLN4460_Portable Test SetEnables connection to audio/accessory jack. 
Allows switching for radio testing.
RVN4191_ Customer Programming 
Software (CPS) - Software on 
CDROM & Global TunerPrograms customer options and channel data. 
RKN4081_Programming Cable with 
Internal RIBIncludes radio interface box (RIB) capability.
FKN8096_ Data/Flash Adapter Key Used with RKN4081 (10 to 8 pin adapter for 
front Telco connector with Data/Flash switch).
RKN4083_Mobile Programming/Test CableConnects radio to RIB (RLN4008_).via rear 
accessory connector
FKN8113_ Adapter Cable Used with RKN4083 (20 to 16 pin adapter for 
rear accessory connector).
GT F 3 7 4 _Program CableConnects RIB to Radio microphone input.
RLN4008_ Radio Interface Box Enables communications between radio and 
computer’s serial communications adapter.
HSN9412_Wall-Mount Power SuppyUsed to power the RIB. (120 V ac)
HLN8027_ Mini UHF to BNC Adaptor Adapts radio antenna port to BNC cabling of 
test equipment.
8180384N64Housing Eliminator (25W)Test Fixture used to bench test the radio pcb. 
3080369B71 Computer Interface Cable Connects the RIB to the Computer (25-pin).
3080369B72Computer Interface CableConnects the RIB to the Computer (9-pin)
(Use for IBM PC AT - other IBM models use 
the B71 cable above).
6686119B01 Removal Tool Assists in the removal of radio control head.
6680334F39Hex ToolAssists in the removal of antenna connector. 
						

							3-2SERVICE AIDS
2.0 Test Equipment
Table 3-2 lists test equipment required to service the radio and other two-way radios.
Table 3-2   Recommended Test Equipment
Motorola Part No. Description Characteristics Application
R2000, R2600, 
R2400, or R2001 
with trunking 
option for Privacy 
Plus™ and 
Smartnet 
Systems™ 
†
Service MonitorThis monitor will 
substitute for items 
listed below with an 
asterisk *Frequency/deviation meter and 
signal generator for wide-range 
troubleshooting and alignment
*R1049 Digital Multimeter Two meters recommended for AC/
DC voltage and current 
measurements
*S1100Audio Oscillator67 to 200Hz tonesUsed with service monitor for 
injection of PL tones
*S1053, 
* S K N 6 0 0 9 ,              
*SKN6001AC Voltmeter, 
Power Cable 
for meter, 
Test leads for meter• 1 mV to 300 V
• 10 MΩ input 
impedanceAudio voltage measurements
 R1053Dual-trace 
Oscilloscope20 MHz bandwidth,
 5 mV/cm - 20 V/cmWaveform measurements
R1443A Broadband 
WattmeterTransmitter power output 
measurements
 S1339RF Millivolt Meter100 μV to 3 VRF, 10 
kHz to 1.2 GHzRF level measurements
*R1013 SINAD Meter Receiver sensitivity measurements
 S1348 (prog)DC Power Supply0-20 Vdc, 0-20 AmpsBench supply for 13.8Vdc 
						

							CM200/CM300/PM400
Radios
Control Head
Service Information
Issue: November, 2007
M 
						

							ii
Computer Software Copyrights
The Motorola products described in this manual may include copyrighted Motorola computer programs stored 
in semiconductor memories or other media. Laws in the United States and other countries preserve for 
Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or 
reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer 
programs contained in the Motorola products described in this manual may not be copied or reproduced in 
any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola 
products shall not be deemed to grant, either directly or by implication, estoppel or otherwise, any license 
under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive 
royalty-free license to use that arises by operation of law in the sale of a product. 
						

							iii
Table of Contents
Chapter 1OVERVIEW
1.0 CM200 Model....................................................................................................... 1-1
2.0 CM300/PM400 Models ........................................................................................ 1-1
Chapter 2THEORY OF OPERATION
1.0 Introduction .......................................................................................................... 2-1
2.0 Control Head Model for CM200 ........................................................................... 2-1
2.1 Power Supplies............................................................................................... 2-1
2.2 SPI Interface ................................................................................................... 2-1
2.3 Keypad Keys .................................................................................................. 2-2
2.4 Status LED’s and Back Light Circuit ............................................................... 2-2
2.5 Microphone Connector Signals ...................................................................... 2-2
2.6 Speaker .......................................................................................................... 2-3
2.7 Electrostatic Transient Protection ................................................................... 2-3
3.0 Control Head Model for CM300/PM400 ............................................................... 2-4
3.1 Power Supplies............................................................................................... 2-4
3.2 SPI Interface ................................................................................................... 2-4
3.3 Keypad Keys .................................................................................................. 2-5
3.4 LCD Driver ...................................................................................................... 2-5
3.5 Status LED’s and Back Light Circuit ............................................................... 2-5
3.6 Microphone Connector Signals ...................................................................... 2-5
3.7 Speaker .......................................................................................................... 2-6
3.8 Electrostatic Transient Protection ................................................................... 2-6
Chapter 3TROUBLESHOOTING CHARTS
1.0 Control Head CM200 Troubleshooting Chart....................................................... 3-1
1.1 Control Head Failure ...................................................................................... 3-1
1.2 Button/Tones Select Error (Page 1 of 2) ........................................................ 3-2
1.3 Button/Tones Select Error (Page 2 of 2) ........................................................ 3-3
2.0 Control Head CM300/PM400 Troubleshooting Chart .......................................... 3-4
2.1 Control Head Failure ...................................................................................... 3-4
2.2 Button/Tones Select Error (Page 1 of 2) ........................................................ 3-5
2.3 Button/Tones Select Error (Page 2 of 2) ........................................................ 3-6
Chapter 4CONTROL HEAD PCB / SCHEMATICS / PARTS LISTS
1.0 Allocation of Schematics and Circuit Boards ....................................................... 4-1
2.0 Control Head CM200 - PCB 8488998U01 / Schematics ..................................... 4-3 
						

							iv
2.1 Control Head PCB 8488998U01 Parts List .................................................... 4-5
3.0 Control Head CM300/PM400 - PCB 8489714U01 / Schematics ......................... 4-6
3.1 Control Head PCB 8489714U01 Parts List .................................................... 4-8