Motorola Professional CDM1550 LS+ Detailed Service Manual Download

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Summary of Contents for Professional CDM1550 LS+

Page 1: ...CDM1550 LS 200 MHz 700 MHz Professional Series Two Way Radio Detailed Service Manual ...

Page 2: ...vey the SOFIWARE MOTOROLA SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF THIS SOFTWARE With r sp t t th U S ovetmmenl if acquir d under PAR policy 52 27 19 the SOFTWA RE is pr JVided with Restricted Right ond i ncquircd under DFARS poli cy 227 7202 then the SOFI WA RE is provide I on ly with th omrn rd 1rl h ls of this A p r Cmenl This license is effective unti...

Page 3: ... 3 Emergency 2 4 2 2 4 Mechanical On Off 2 4 2 2 5 Ignition 2 4 2 2 6 Microprocessor Clock Synthesizer 2 5 2 2 7 Serial Peripheral Interface SPI 2 5 2 2 8 SBEP Serial Interface 2 6 2 2 9 General Purpose lnpuUOutput 2 6 2 2 1 0 Normal Microprocessor Operation 2 7 2 2 11 Static Random Access Memory SRAM 2 8 2 3 Controller Board Audio and Signalling Circuits 2 8 2 3 1 Audio Signalling Filter IC with ...

Page 4: ...19 2 5 1 Power Controlled Stage 2 20 2 5 2 Pre Driver Stage 2 20 2 5 3 Final Stage 2 20 2 5 4 Directional Coupler 2 20 2 5 5 Antenna Switch 2 20 2 5 6 Harmonic Filter 2 21 2 5 7 Power Control 2 21 2 6 Frequency Synthesis 2 21 2 6 1 Reference Oscillator 2 21 2 6 2 Fractionai N Synthesizer 2 22 2 6 3 Voltage Controlled Oscillator VC0 2 23 2 6 4 Synthesizer Operation 2 24 2 7 700 MHz Receiver Front E...

Page 5: ... 3 8 3 8 Transmitter Troubleshooting Chart 200 MHz 3 10 3 9 Transmitter Troubleshooting Chart 700 MHz 3 11 3 10 Synthesizer Troubleshooting Chart 200 MHz 3 12 3 11 Synthesizer Troubleshooting Chart 700 MHz 3 13 3 12 VCO Troubleshooting Chart 200 MHz 3 15 3 13 VCO Troubleshooting Chart 700 MHz 3 16 Chapter 4 Schematic Diagrams Overlays and Parts Lists 4 1 Introduction 4 1 4 1 1 Notes For All Schema...

Page 6: ... 27 Figure 4 20 700 MHz Main Board Bottom Side PCB 4 28 Figure 4 21 700 MHz Receiver Front End Schematic Diagram 4 29 Figure 4 22 700 MHz Receiver IF Schematic Diagram 4 30 Figure 4 23 700 MHz Transmitter Power Amplifier Schematic Diagram 4 31 Figure 4 24 700 MHz Fractionai N Synthesizer Schematic Diagram 4 32 Figure 4 25 700 MHz Voltage Controlled Oscillator Schematic Diagram 4 33 Figure 4 26 700...

Page 7: ...eypad Schematic 4 6 CDM1550 LS Control Head Backlight Schematic 4 7 CDM1550 LS Control Head Display Schematic 4 8 200 MHz Main Board Top Side PCB 4 11 200 MHz Main Board Bottom Side PCB 4 12 200 MHz Receiver Front End Schematic Diagram 4 13 200 MHz Receiver IF Schematic Diagram 4 14 200 MHz Transmitter Power Amplifier Schematic Diagram 4 15 200 MHz Fractionai N Synthesizer Schematic Diagram 4 16 2...

Page 8: ...vi List of Tables Table 1 1 Table 1 2 Table 3 1 Related Documents 1 2 Radio Model Number 1 3 Recommended Test Tools 3 5 ...

Page 9: ...atisfy FCC RF energy exposure requirements Before using this product read the RF energy awareness information and operating instructions in the Product Safety and RF Exposure booklet enclosed with your radio Motorola Publication part number 68P81 095C99 to ensure compliance with RF energy exposure limits For a list of Motorola approved antennas batteries and other accessories visit the following w...

Page 10: ...Safety viii This page intentionally left blank ...

Page 11: ...contract These conditions may change from time to time and the following notes are for guidance purposes only 1 2 2 Return Instructions In instances where the product is covered under a return for replacement or return for repair warranty a check of the product should be performed prior to shipping the unit back to Motorola This is to ensure that the product has been correctly programmed or has no...

Page 12: ...da L5R 3M1 1 800 543 3222 1 416 756 5841 1 888 331 9872 Fax Motorola U S Federal Government Depot 4395 Nicole Drive Lanham MD 20706 1 800 969 6680 1 301 731 6676 1 5 Warranty and Repairs For warranty and repairs contact Motorola Technical Support as listed below Be prepared to provide the product model number and the unit s serial number Some replacement parts spare parts and or product informatio...

Page 13: ...listed under the Related Documents paragraph of this chapter 1 7 Radio Model Information AA t Q ell c Q c ell 0 0 0 2 II The model number and serial number are located on a label attached to the back of your radio You can determine the RF output power frequency band protocols and physical packages from these numbers The example below shows one portable radio model number and its specific character...

Page 14: ...1 4 Introduction This page intentionally left blank _ ...

Page 15: ...des connections for a power antenna and accessory cable The accessory cable provides connections for items such as an external speaker emergency switch foot operated PTT and ignition sensing etc 2 2 Controller The radio controller shown in Figure 2 1 is divided into three main functions Digital control Audio processing Voltage regulation The digital control section of the radio consists of a micro...

Page 16: ...when the radio is turned off Voltage regulator U0651 provides 5 volts operating voltage for the digital circuits Operating voltage is from the regulated 9 3volts supply Input and output capacitors C0651 I C0652 and C0654 I C0655 reduce high frequency noise and provide proper operation during battery transients Voltage sense device U0652 or alternatively U0653 provides a reset output that goes to 0...

Page 17: ... the radio on or off without direct user action For example automatic turn on when ignition is sensed and off when ignition is off 00661 provides the INT SW B voltage to the various radio circuits and to enable the voltage regulators via transistor 00641 which contains a pnp and an npn transistor that provide an electronic on off switch The switch is on when the collector of the npn transistor wit...

Page 18: ...has finished processing the emergency press it sets the DC POWER ON line to a logic 0 This turns off Q0661 and the radio turns off Notice that the Pis alerted to the emergency condition via line GP5 IN ACC9 If the radio is already on when the emergency is triggered the DC POWER ON signal is already high 2 2 4 Mechanical On Off This refers to the on off volume knob located on the control head which...

Page 19: ...control heads with display or as time stamp for incoming calls or messages The real time clock is powered from the voltage VSTBY to keep running while the radio is switched off If the radio is disconnected from the supply voltage the time must be reset 2 2 7 Serial Peripheral Interface SPI The 1 1P communicates to many of the IC s through its SPI port This port consists of SPI TRANSMIT DATA MOSI U...

Page 20: ...ad wants to start SBEP communication The 1 1P then reads the registers of the Universal Asynchronous Receiver Transmitter UART U0125 to determine that the interrupt source was the control head If the interrupt source was from the control head the 1 1P requests the data from the control head The control head starts sending and after all data has been sent the ON OFF CONTROL line goes low The contro...

Page 21: ...tween 4 8 to 5 0 volts and the logic low levels should be between 0 to 0 2 volts No other intermediate levels should be observed and the rise and fall times should be 30ns The low order address lines ADDR 0 ADDR 7 and the data lines DATA 0 DATA 7 should be toggling at a high rate e g you should set your oscilloscope sweep to 11Jsldiv or faster to observe individual pulses High speed CMOS transitio...

Page 22: ...ed for the calculated values which are accessed most often Capacitor C0122 filters out any ac noise which may ride on 5V at U0122 2 3 Controller Board Audio and Signalling Circuits 2 3 1 Audio Signalling Filter IC with Compander ASFIC CMP The ASFIC CMP U0221 used in the controller has the four following functions RX TX audio shaping i e filtering amplification attenuation RX TX signalling PL DPL H...

Page 23: ...hen routed via R0409 and line INT MIC to R0205 Resistors R0201 and R0202 provide 9 3Vdc bias Resistive divider R0205 R0207 divide the input signal by 5 5 and provide input protection for the CMOS amplifier input R0202 and C0201 provide a 560 ohm AC path to ground that sets the input impedance for the microphone and determines the gain based on the emitter resistor in the microphone s amplifier cir...

Page 24: ...00Hz voice band and pre emphasized if pre emphasis is enabled The signal is then limited to prevent the transmitter from over deviating The limited microphone audio is then routed through a summer which is used to add in signalling data and then to a splatter filter to eliminate high frequency spectral components that could be generated by the limiter The audio is then routed to an attenuator whic...

Page 25: ...imply a PL tone at a higher deviation level than PL in a conventional system Although it is referred to as sub audible data the actual frequency spectrum of these waveforms may be as high as 250 Hz which is audible to the human ear However the radio receiver filters out any audio below 300Hz so these tones are never heard in the actual system Only one type of sub audible data can be generated by U...

Page 26: ...e signalling schemes are based on sending a combination of 1200Hz and 1800Hz tones only Microphone audio is muted during high speed data signalling 2 3 4 3 Dual Tone Multiple Frequency DTMF Data DTMF data is a dual tone waveform used during phone interconnect operation It is the same type of tones which are heard when using a Touch Tone telephone There are seven frequencies with four in the low gr...

Page 27: ...tering the ASFIC CMP is amplified filtered attenuated and rectified It is then sent to a comparator to produce an active high signal CH ACT The squelch circuit produces the SQ DET signal at U0221 pin 17 from the CH ACT input signal The state of CH ACT and SQ DET go from a low logic 0 to a high logic 1 when an RF carrier is detected The CH ACT and SQ DET signals from the squelch circuit are applied...

Page 28: ... capable of overdriving the PA unless the maximum volume is limited Resistor R0267 and capacitor C0267 increase frequency components below 350 Hz The audio then passes through R0269 and C0272 which provides AC coupling and low frequency roll off C0273 provides high frequency roll off as the audio signal is routed to audio power amplifier U0271 pins 1 and 9 which are both tied to the received audio...

Page 29: ...s now encrypted audio follows the normal receive audio processing until it is output from the ASFIC CMP UIO U0221 pin 10 which is fed to the secure audio board at option connector J0551 pin 35 On the secure board the encrypted signal is converted back to normal audio format then fed back through J0551 pin 34 to AUX RX of the ASFIC CMP U0221 pin 43 The signal then follows a path identical to the co...

Page 30: ... type of received data 2 3 6 2 Alert Tone Circuits When the software determines that it needs to give the operator an audible feedback for a good key press or for a bad key press or radio status trunked system busy phone call circuit failures it sends an alert tone to the speaker It does so by sending SPI BUS data to U0221 which sets up the audio path to the speaker for alert tones The alert tone ...

Page 31: ...res service from the 1 LP Audio either from the radio s receiver or from one of the microphone inputs emerges from the ASFIC CMP U404 at pin 43 through switch U608 1 that is selected by the 1 LP via ASFIC CMP pin 5 DACR and then enters the voice storage IC U611 at pin 25 During playback the stored audio emerges from U611 at pin 20 To transmit the audio signal it is fed through resistive divider R6...

Page 32: ...nt mirror 03003 maintains constant current operation of the RF amp vs device and temperature variations for optimum dynamic range and noise figure The output of the RF amplifier is applied to the RF amp filter comprised of L3023 4 L3041 C3052 7 and C3359 also a fixed tuned 3 pole bandpass filter configured to provide steeper high side attenuation The antenna filter and RF amp filter have a combine...

Page 33: ...ivity is provided by two ceramic filters Y31 04 between the second mixer and IF amp and FL3106 between the IF amp and the limiter input Y3104 is a 4 element filter with a BW6 12kHz FL3106 is a 6 element filter with a BW6 9kHz These bandwidths are optimum for 12 5 kHz channel spacing systems Ceramic resonator Y31 02 provides phase vs frequency characteristic required by the quadrature detector with...

Page 34: ...y from the radio s de supply voltage input PASUPVLTG via L3437 A matching network consisting of C3441 2 C3445 6 and L3443 and two striplines transforms the impedance to approximately 50 ohms and feeds the directional coupler 2 5 4 Directional Coupler The directional coupler is a microstrip printed circuit which couples a small amount of the forward and reflected power delivered by 03441 The couple...

Page 35: ...e or below its nominal value to raise or lower output power Capacitors C3502 4 in conjunction with resistors and integrators within the PCIC control the transmitter power rise key up and power decay de key characteristic to minimize splatter into adjacent channels U3502 is a temperature sensing device which monitors the circuit board temperature in the vicinity of the transmitter driver and final ...

Page 36: ...RESCALER IN Figure 2 9 200 MHz Synthesizer Block Diagram A voltage of 5V applied to the super filter input U3201 pin 30 supplies an output voltage of 4 5 Vdc VSF at pin 28 It supplies the VCO VCO modulation bias circuit via R3363 and the synthesizer charge pump resistor network R3251 R3252 The synthesizer supply voltage is provided by the 5V regulator U3211 In order to generate a high voltage to s...

Page 37: ...ies in both the transmit and receive modes The TRB line U3301 pin 19 determines which tank circuits and internal buffers are to be enabled A high level on TRB enables the TX tank and TX output pin 10 and a low enables the RX tank and RX output pin 8 A sample of the signal from the enabled RF output is routed from U3301 pin 12 PRESC_OUT via a low pass filter to U3201 pin 32 PREIN A steering line vo...

Page 38: ...filter which consists of R3221 R3223 R3343 C3221 C3224 and C3346 transforms this current into a voltage that is applied to the varactor diodes D3361 for transmit D3341 for receive to alter the output frequency of the appropriate VCO The current can be set to a value fixed within the LVFRAC N IC or to a value determined by the currents flowing into BIAS 1 U3201 40 or BIAS 2 U3201 39 The currents ar...

Page 39: ...ttenuator consisting of R3013 D3000 03003 and associated components Normally 03003 and D3000 are on and the receiver sensitivity is at maximum When 03003 and D3000 are off the series resistor R3013 reduces receiver sensitivity to minimize intermodulation when operating in the presence strong undesired signals The output of the local distance attenuator is connected to the passive double balanced m...

Page 40: ...s in the line up The first stage is a LDMOS predriver U3401 that is controlled by pin 4 of PCIC U3501 via U3503 CNTLVLTG It is followed by another LDMOS stage 03420 and an LDMOS final stage 03440 From VCO Vcontrol To Microprocessor Harmonic Filter _ _ ASFIC Bias 1 PA PWR SET Antenna L To Microprocessor Figure 2 12 700 MHz Transmitter Block Diagram 2 8 1 Power Controlled Stage The first stage U3401...

Page 41: ...rop across each diode Q3471 is configured as a current source that maintains the current through the antenna switch diodes at 90 mA as set by VR3470 and R3472 The current source is enabled only during transmit by Q3470 and U3501 pin 32 2 8 5 Harmonic Filter Inductors L3474 6 capacitors C3481 2 and two microstrip stubs form a low pass filter to attenuate harmonic energy from the transmitter R3475 i...

Page 42: ...events thermal damage of the RF final transistor which might occur if the transmitter is operated without adequate heatsinking 2 9 Frequency Synthesis The synthesizer subsystem consists of the reference oscillator the low voltage fractionaI N synthesizer LVFRAC N and the Voltage Controlled Oscillator VCO 2 9 1 Reference Oscillator The reference oscillator Y3201 contains a temperature compensated c...

Page 43: ...e lock status of the synthesizer loop A high level at this output indicates a stable loop IC U3201 provides the 16 8 MHz reference frequency at pin 19 The serial interface SRL is connected to the IJP via the data line DATA U3201 7 clock line CLK U3201 8 and chip enable line CSX U3201 9 2 9 3 Voltage Controlled Oscillator VCO The Voltage Controlled Oscillator VCO consists of the VCO buffer IC VCOBI...

Page 44: ... TX and 03306 RX are used for lower noise AUX3 U4201 Pin2 TRB IN Prescaler Out r I U4201 Pin 32 Pin20 Pin 19 Pin 12 SW P in7 f TX RX BS Tx SW Pin13 Switching Network LO RF INJECTION Collector RF in Pin4 Pin2 Pin1 Pins9 11 17 Rx 1 adjust Tx 1adjust U420 Pin28 Figure 2 14 700 MHz VCO Block Diagram The external RX buffers 03301 2 are enabled by a high at U3301 pin 7 via transistor switch 03303 In TX ...

Page 45: ...ion method is utilized Via pin 10 MODIN on U3201 The audio signal is applied to both the AID converter low frequency path as well as the balanced attenuator high frequency path The AID converter converts the low frequency analog modulating signal into a digital code which is applied to the loop divider thereby causing the carrier to deviate The balance attenuator is used to adjust the VCO s deviat...

Page 46: ...prevents radio circuits from discharging this capacitor There are eight analog to digital converter ports A D on the Jp They are labeled within the device block as PEO PE7 These lines sense the voltage level ranging from 0 to 5V of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action Pin VRH is the high reference volta...

Page 47: ... the LED status the host radio sends a data message via SBEP bus to the control head IJP The control head IJP determines the LED status from the received message and switches the LED s on or off via port PB 7 0 and port PA4 The LED status is stored in the IJP s memory The LED current is determined by the resistor at the emitter of the respective current source transistor The back light for the LCD...

Page 48: ... temperature range the IJP measures the temperature via analog to digital converter U0831 18 using temperature sensor U0834 Dependent on the measured temperature the IJP adjusts the driver output voltage V5 and in turn the display brightness via parallel interface 2 1 0 8 Microphone Connector Signals Signals BUS PTI IRDEC HOOK MIC HANDSET AUDIO FLT A 5V and 2 AJD converter inputs are available at ...

Page 49: ... diodes VR0811 VR00812 and VR0816 VR0817 The diodes limit any transient voltages The associated capacitors provide radio frequency interference RFI protection PassPort Trunking Controller Board PTCB PassPort is an enhanced trunking protocol developed by Trident Microsystems that supports wide area dispatch networking A network is formed by linking several trunked sites together to form a single sy...

Page 50: ...2 36 Theory of Operation This page intentionally left blank ...

Page 51: ...s disassembled for servicing or repair The only recommended agent for cleaning the external radio surfaces is a 0 5 solution of a mild dishwashing detergent in water The only factory recommended liquid for cleaning the printed circuit boards and their components is isopropyl alcohol 70 by volume CAUTION The effects of certain chemicals and their vapors can have harmful results on cer tain plastics...

Page 52: ...tect the CMOS device We recom mend using the Motorola Static Protection Assembly part number 0180386A82 which includes a wrist strap two ground cords a table mat and a floor mat Wear a conductive wrist strap in series with a 100k resistor to ground Replacement wrist straps that connect to the bench top covering are Motorola part number RSX 4015 Do not wear nylon clothing while handling CMOS device...

Page 53: ...e seizers Note Do not attempt to puddle out components Prolonged application of heat may damage the flexible circuit Chip Components Use either the RLN 4062 R1319A Chipmaster Hot Air Repair Station or the Motorola 0180381 B45 Repair Station R1364a digital heated tweezer system for chip component replacement When using the 0180381 B45 Repair Station select the TJ 65 mini thermojet hand piece On eit...

Page 54: ...himney 3 Add paste flux Motorola P N 6680333E71 around the base of the shield 4 Position the shield under the heat focus head 5 Lower the vacuum tip and attach it to the shield by turning on the vacuum pump 6 Lower the focus head until it is approximately 1 8 0 3 em above the shield 7 Turn on the heater and wait until the shield lifts off the circuit board 8 Once the shield is off turn off the hea...

Page 55: ...C72 Straight prober 6680384A98 Brush 1010041A86 Solder RMA type 63 37 0 5mm diameter 1 lb spool 0180303E45 SMD tool kit Include with R1319A R 1321A R1319A Shields and Removal and assembly of surface mounted surface mounted integrated circuits and shields Includes five noz component and IC zles removal rework station order all heat focus heads separately 6680334B49 0 410 X 0 410 Heat focus heads fo...

Page 56: ...ce U3101 if defective Bad SINAD No Recovered Audio Spray or inject 44 85 MHz into XTAL Filter FL3101 Check circuitry around Y31 01 Replace Y3101 if defective Check Controller in the case of no audio Or else go to B Replace 03110 Yes Troubleshooting Flow Chart for Receiver 200 MHz Sheet 1 of 2 J ...

Page 57: ...GU Check T3001 T3002 CR3001 L3181 Check filter between C3052 T3001 heck RF amp 03002 Stage Check filter between C3040 C3047 Check harmonic filter and antenna switch No heck Supply Voltage cir cuitry Check U0611 and U0641 Troubleshooting Flow Chart for Receiver 200 MHz Sheet 2 of 2 3 7 ...

Page 58: ... if defective Bad SINAD No Recovered Audio Spray or inject 73 35 MHz intoXTAL Filter FL3101 Check circuitry around Y31 01 Replace Y3101 if defective Check Controller in the case of no audio Or else go to B Replace 03102 Yes Troubleshooting Flow Chart for Receiver 700 MHz Sheet 1 of 2 ...

Page 59: ...L filter Check FGU Check T3001 T3002 CR3001 L3006 Check filter FL3001 Check RF amp stage Check filter FL3000 Check harmonic filter and antenna switch No heck Supply Voltage cir cuitry Check U0611 and U0641 Troubleshooting Flow Chart for Receiver 700 MHz Sheet 2 of 2 3 9 ...

Page 60: ...3 10 3 8 Transmitter Troubleshooting Chart 200 MHz C he k U3402 associated compo nents Yes No No Change U3401 Maintenance Do visual check on all components ...

Page 61: ... Maintenance 3 9 Transmitter Troubleshooting Chart 700 MHz Check U3503 associated compo nents No No Change U3401 3 11 Do visual check on all components ...

Page 62: ...sizer Troubleshooting Chart 200 MHz If C3226 7 RJ227 are 1 OK then see VCO troubleshooting chart Replar e or resolder necessary components Check 5V Regulator U3211 Troubleshooting Flow Chart for 200 MHz Mobile Synthesizer Section ...

Page 63: ... 11 Synthesizer Troubleshooting Chart 700 MHz If L3205 CJ740 8 C3246 tl are OK then see VCO troubleshooting chart Replace or resolder necessary components Troubleshooting Flow Chart for 700 MHz Mobile Synthesizer Section ...

Page 64: ...3 14 Maintenance This page intentionally left blank ...

Page 65: ... or equivalent Transmitter measurements should be made with a 1 2 IJH choke in series with the voltage probe to prevent circuit loading 3 Reference Designators are assigned in the following manner Radio Main Board 0100 Controller Microprocessor Section 0200 Audio and ASFIC 0600 Power Supply 0800 0900 Control Head 3000 Receiver Front End 3100 Receiver Back End 3200 Fractionai N Synthesizer 3300 vco...

Page 66: ...IDE 1 LAYEt 1 L1 LAYER 2 L2 LAYER3 L3 LAYER 4 L4 INNER LAYERS LAYER5 L5 LAYER6 L6 SIDE2 Schematic Diagrams Overlays and Parts Lists 6 LAYER CIRCUIT BOARD DETAIL VIEWING COPPER STEPS IN PROPER LAYER SEQUENCE ...

Page 67: ...oiii _ 28 AND U4301 PIN 14 18 IS OK CHECK RUNNER BETWEEN U3201 PIN 2 1 AND U3301 PIN 19 REPLACE 03301 _ AND OR Q3302 IF ALL PARTS FROM U3301 PIN 8 TO BASE OF Q3301 ARE OK REPLACE U3301 TROUBLESHOOT 03301 CIRCUITRY TROUBLESHOOT RX INJECTION FILTER TROUBLESHOOT TRANSMITIER IF ALL PARTS ASSOCI ATED WITH THOSE PINS TROUBLESHOOT AUDIO CIRCUITRY ARE OK REPLACE U3301 IF L3331 C3315 L3317 R3401 3 ARE OK R...

Page 68: ...OR NO RF SIGNAL AT INPUT TO PA RUNNER BETWEEN U3301 PIN _ 28 AND U4301 PIN 14 18 IS OK IF ALL PARTS FROM U3301 I PIN 8 TO BASE OF 03302 ARE TROUBLESHOOT 03301 AND ASSOCIATED CIRCUITRY OK REPLACE U3301 IF ALL PARTS ASSOCIATED WITH THE PINS ARE OK REPLACE 03302 TROUBLESHOOT 03304 AND ASSOCIATED CIRCUITRY Maintenance TXVCO REPLACE 03305 ...

Page 69: ... 011 1 tO J Irl jl j j LI I4 S M v ffi I I Lmoo 1 1 10 1 11 o xrnn IK Illll rmdr o JG7 l mth dt Jnt r ll l r LI EB Q M soooo ol D 0 1 O el l D _ 0 i bn O Jl3 no D 00l7 1Jt 112 J u IJIY Jil ____ 76 SO f f i IIIJII Stlll ll SIJ Jo leJi DI Q D 0 D ICJ DI Jilt I ZWG013Q136 Figure 4 1 CDM1550 LS Control Head Top Overlay ...

Page 70: ...4 4 Figure 4 2 CDM1550 LS Control Head Bottom Overlay EB I D 0 Schematic Diagrams Overlays and Parts Lists c r D 0 0 0 0 0 a o O ZWG0130137 ...

Page 71: ...01121 RESET TP0633 AN 04 J0801 CONTROLHEAD CONNECTOR ll jlo Transceiver Interface JOB01 14 J0801 13 JOB01 12 J0801 11 J0801 10 SCI_TX P0801 1 1C0808 I 92pF P0801 2 NU J0901 9 ll J0801 8 J0801 7 J0801 6 J0801 5 J0801 4 J0801 3 J0801 2 J0801 1 r C0807 470pF 5 H v ANOSET_AUDIO BUS MIC LT_A F N_OFF_CONTROL I 1 1 I I I I I cMoo c08os c08o4 c0 8o3 chiio2 41 1 1 82pF 470pF 470pF A7upt N N U Controller Se...

Page 72: ...chematic Diagrams Overlays and Parts Lists Keypad B Layout ROW1 P1 8W0906 0 3 1 1 8 80905 80906 ROW2 P5 P4 P8 P3 P7 I ROW3 80908 COL4 COL3 COL2 ZWG0130242 Figure 4 4 COM1550 LS Control Head Keypad Schematic ...

Page 73: ...Parts Lists 00933 FLT_A 1 R0941 10K R0942 33K 00934 R0944 100K BACKLIGHT GREEN 00965 R0947 10 00969 0 0973 oo9n 00981 00985 00986 00987 00988 R0931 10K NU 00931 NU 4 7 ZWG0130243 Figure 4 5 CDM1550 LS Control Head Backlight Schematic ...

Page 74: ... il SEG28 171 SEG28 C29 SEG29 SEG29 C30 SEG30 IB SEG3o C31 o SEG31 SEG31 C32 g SEG32 111 d SEG32 C33 f SEG33 183 SEG33_C34 SEGJ SEG34 C35 I I c SEG35 SEG35 C36 SEG36 SEG36 C37 4 g 0 IV u gg IVY z u C oo 0 0 A 0 VV gg n 4 0 g r O Gl m f m z f m A z U c8g A 6 4 0 U I 0 U i5 0 o8 Y f IHf 1 1Hr voo I 13 vss g SEG37 1 SEG37 C38 g ISS SEG40 SEG40 C41 0 iii 0 iil f m 1 m 0 SEG41 91 SEG41_C42 SEG42 SEG42_...

Page 75: ...813824A10 Transistor NPN R0906 0662057A90 51K C0976 2113743E20 100nF Q0933 4813824A08 Transistor PNP R0907 0662057A76 13K C0978 2113743E20 100nF Q0934 4813824A10 Transistor NPN R0908 0662057A81 22K C0980 2113743E20 100nF R0810 0662057A76 13K R0909 0662057A88 43K C0983 2311049A09 2 2uF R0811 0662057A90 51K R0935 0662057A73 10K C0984 2113741F49 10nF R0812 0662057A09 22 R0936 0662057A73 10K C0985 231...

Page 76: ...4 10 Schematic Diagrams Overlays and Parts Lists This page intentionally left blank ...

Page 77: ...4 11 0 jeJu j EJ 0 _ Figure 4 7 200 MHz Main Board Top Side PCB ...

Page 78: ...4 12 r 1 I t J L J CJ z Mam Board Bottom Side PCB Figure 4 8 200 MH rnw 0 200 MHz Schematic o lagrams Overlays and Parts Lists 0 0 ...

Page 79: ...200 MHz Schematic Diagrams Overlays and Parts Lists l em l 1 9R3 u Sllft FECNTL_2 9R3 N v I MMiYM01L T I 6 HC 4 13 TPHOt Figure 4 9 200 MHz Receiver Front End Schematic Diagram ...

Page 80: ...1 1 Ill Q 0 I _ l Y3100 IMBOG 1 I I I I I I I I II 1 1C3110 c IINU I I I I Y3104 CFUCJ455F t r o u r 2 _l I I 1 3 _l R311M 16K 1 1 R3108 IOK R310V 1 5 6K 200 MHz Schematic Diagrams Overlays and Parts Lists FL3106 CFWC456G 2 OUT IH L _c I J R310l V IK I I t l C3100 1 3 3K I O tuF C3101 NU 6V I R3116 3GO Q3111 MMBT3G04 R3115 UK r C C3116 L _C3117 R3110 I 4700pF T O tuF L v V YV r J Auao IU hl 1 J RS...

Page 81: ... r 17 u 7Mrft l NU l l 1 1 I l Ullo ll 1 PA e M l Nv vm T A f 1 I Wr Oii _j_ I U_DIU lR 2200pF __ r l KMII C ___j HBATIINI NU ou I 1 ft RJU 1 IINIDOIOI NOT_Pt ACED J r VVV 0 221M U47l 1 11 UU OI vv _ __ _ __ cox col __ Q ___ _ l_ S NU 1 tOI W LT C o 1EUr lli J 4 15 Figure 4 11 200 MHz Transmitter Power Amplifier Schematic Diagram ...

Page 82: ... r j i vod c322r 1 F PRESC Rli l 111Alll7 1 1 4 4 9SVDC R I T tJ j_ t C VSF BWSELECT ___ tf _ OV_ O C T i t t UX I VB ASSI 153A27 I VF Ef f ret rew1171254 I vcOMoo El L ______ __ iLi r ujJ c______ 1 J i VMvu4 _ 4 1 111 19011 _1 _ o tfr 4 szvoc Rl mAr j_ Jl n n L_____ _g l olvLu T 2 62VOC T topF _ 1 olOULTZ DAT4f 1 0 r S V ce 0 C _j Rl29 1 VMULit MODitf 7 10 J 2 5VDC 15 I v tdBm I MOOOUT C e CI J C...

Page 83: ... WF L3 11 1 OVDC R 4 01YDC rn 100nH R 3 C3311 I u 1 53VDC R ovoc O U2VDC R OVDC T R3351 20K i LU O 1uH L ill C33o41 10 0pF II Rl341 no 1 e ml 01uF 20K f RU151 11K J I 01UF 1 1 LU 1 8nH CH52 022uF OVDC I I 7VDC m ems 022uF 1uH Ctl42 NU I 1 03 1 452VDC R 2 62VDC T 2 11VDC r v n L__ NY L 4 0200pF I 1 C33oi7 I NU 150K co I1000pF 1 JTAL CJ veoot VC081A8_2 w r rvv J Ar VCOMQO I om 1svm Figure 4 13 200 M...

Page 84: ...i CONTROLLER I IOII UI MOIL 1 UUlU Koll 007f eMlN a r I04tll lt r rill I J W SIE IIC IM OI I I PUWfllll lliiiMPI _ u tlf 11mf1Wt NtiiU IfU Ji U IMK I JIHIIU111fiW C IUII lfflltU 00 W I 1Jfltllii1TI Wf151 1 TJ0tlm1r94 11 LWDC U010 717111 oliiii T T4010tUlii S46f LWOC 1b01017 II WR lWIX tllMD7121111ii PN l ltii_Jll fNIOAI o ll Aitl 200 MHz Schematic Diagrams Overlays and Parts Lists VO ICE_STORAGE 0...

Page 85: ... I I 1 r H H t 1 U IIU M CY i AIO 5 Al l u __ _ I IL_ t ri ON_or r CONTAOl CfeUCIIfUI MICROPROCESSOR YOil __ I I J I II tlQIF NU l l III r MI ll ot 01 r n NU NU NU I I Dio AI TIJ J OO BD Ar Q HCUB_AU I A T IOl ti q fil nrt 0 lll l _ nnn 1111 NU 1M l I P oom 1 o J AtK n GP111ACO OlCHI __ l ftl_ r _ Cll 2_0lrr_ACC4 ln iv Iii r l i IJ I 7t4EXA J _ CP411UltiT ACf A 1 F _ 1 ______1 Jo GI 5_III ACC9 4 1...

Page 86: ... _ _ NU W AF 0 W_Rf 1111 S l Artltl 1 SK n r FL AT_TX_IlTN 1 t H l NU _ l T tlluf 41K 1 1 wv 1 1 ftf II wv L ur 1 iC IU_HAf fllli IU U AUDIO t l Ueutt2 r J MANDSET A IIDIO l c w_tu r wl RD26G a11 2 l I H J l 1 1 1 _ m l OC POWER ON NOitlr NNKR J CH ACT Q 4i1l O tuf JVVv l 1 _ _ t ul I llrl l 1 1 m nuc I I U pf ntol 11111 oon o 1 1 1 f r f r D UUII CUIJ IUM UW I L _ 4 t GPDCIJ U J om AU O ...

Page 87: ...T TX ATll R I7 1NT RrM DOARD 0JIUII I oM tr c K r J GPJJN AC c f P4 IN_OUT ACC a IIUJt 11014 C IK IU J A I I J l 1 _ _ TT II 1IJ p f J Mll i 1 Pf CI h ur_ r L 1 GI O_IN_AC O l o GOOOIOOOO OPT rTT 6 ROY r 4H Itr a II ijN_H Ollf AttA II tJd U t lilr Jil qt IQ O u an Q r D Ill 1 1 14 1 U tiJ I Jt loOCJ h CIK IIIIJl I I at I lff IW AIIC IIQ I HAT_I JI rN TOlFROM RF lliJ o l NIS MESH _ _ _ _ Rlilil T f...

Page 88: ...U0811 LM2t41 v j r r w I 1 R0611 58K _j_UliF _rlul 1 t FL A c I 1 l lltfU _L l U 0Dfl41 u 71K 1 11E 1 1 2K 1 CION l 0861 lNu I c r01UF UOU1 MC78M05 Q0 81 UK t sev OUT _ Tcol i5 1 Jjo of Tcooss ___lj 1ufl r _LNU DVSTBY Tco m _r U01i5J IIICUOij l IN_5V_RF_REG L TPCMI IVR0611 NOT_PLACED D BATTERY_VOLTAOE Figure 4 18 200 MHz Power Supply Schematic Diagram ...

Page 89: ...3L09 470 pF C0541 2311049A05 0 47 uF C0542 2311049A99 47 uF 20 10 V C0554 not used C0558 not used C0559 not used C0560 2113743L17 1000 pF C0575 not used C0576 not used C0591 2113743E20 0 1 uF 10 16V C0592 2113743E20 0 1 uF 10 16 V C0600 2113743N22 6 8 pF C3070 2113743L17 1000 pF C30 1 2113743L17 1000 pF C3072 2113743L17 1000 pF C3073 2109445U23 6 8 pF C3074 2109445U23 6 8 pF C3075 2109445U37 15 pF...

Page 90: ...352 2113743E07 022 uF 10 16 V C3446 2111078B34 47 pF D3361 4805649013 Varactor 1SV228 C3228 2113743E20 0 1 uF 10 16 V C3355 2113741F49 01 uF 5 50 V C3447 2111078B13 10 pF D3362 4862824C01 Varactor 1SV228 C3229 2113743E12 047 uF 10 16 V C289 C3356 2113743E07 022 uF 10 16 V C3448 not used D3401 not used C3231 2113741F49 01 uF 5 50 V C3357 2113740F24 7 5 pF C3449 not used D3451 4813825A05 Schottky Di...

Page 91: ...8 nH 03422 4880048M01 Digital NPN DTC144EKA R0212 0660076E70 7 5 K R0535 0662057A49 1 K L3351 2462587N68 1 uH 03441 4886136801 36B01 R0220 not used R0537 0662057A33 220 L3361 2462587N50 56 nH 03442 4880048M01 Digital NPN DTC144EKA R0221 0662057A82 24 K R0538 0662057A33 220 L3362 not used 03471 4880048M01 Digital NPN DTC144EKA R0222 0662057A82 24 K R0539 0662057A65 4 7 K L3363 2462587N44 18 nH 0347...

Page 92: ... 0662057A25 100 R3424 0662057C13 2 7 R3242 0662057847 0 R3425 0662057C13 2 7 Motorola Description Part No 0662057C13 2 7 0662057C13 2 7 0662057A58 2 4 K not used 0680194M18 51 0680194M18 51 0662057C13 2 7 0662057C13 2 7 0662057C13 2 7 not used 0662057A87 39 K 0662057A57 2 2 K 0662057A87 39 K 0662057C19 4 7 0662057A58 2 4 K 0662057B47 0 0662057A41 470 0662057A75 12 K 0662057A84 30 K 0662057A97 100 ...

Page 93: ...700 MHz Schematic Diagrams Overlays and Parts Lists 4 27 0 0 _ Figure 4 19 700 MHz Main Board Top Side PCB ...

Page 94: ...4 28 r 1 0 CJ L _j Figure 4 20 700 MHz Main Board Bottom Side PCB 700 MHz Schematic Diagrams Overlays and Parts Lists llij JCl J Ef UJru 11 brolli I D l cY 6 D a m o ...

Page 95: ...180nH Q3003 UMC6Nll I r M l w rr f 1 rl R3012 430 L3005 C3010 180nH I 61pf I 1 r f Nv liN C3013 l FL3001 46 191 OUT _ 2 __ fYY 61pF R3009 R3011 t JNU C3012 Iu RXINJ l L3004 3 31 11 C3016 I 1 8pf RX1NJ 1 FE EiJ C3028 61pf II C3028 C3011 120pF II __rrn L3000 880nH C3020 4 3pF 0 D IF IF_FE_1 NU I C3019 I I C3017 __L 1I C302tl L3009 l5pF 6 46nH IJ rrr 3 F C3023 11pF II L300B 6 46nH ____ryy n I_ J 1C30...

Page 96: ...4 30 l _too_M_i r E 7 JI Figure 4 22 700 MHz Receiver IF Schematic Diagram E31U1 17 t 1 1 S IUU t I M I J u II 11 NU l 1 11 700 MHz Schematic Diagrams Overlays and Parts Lists VJIIQ CM _ l ...

Page 97: ... I I J r ___17 T o J l r 1 1J_I f J J R loU t Wv 1 1 Vlllr 4h J I VV v w AN r l 1 1 15rH j_ I t 1 IIOtW IOV 11W mon l foil OSI 51pl I II AJ lrTI 1 liUC9Ht ol 1V 16 5W I OV 11W PA_PWP SH 4 31 RXJIV_t A i I L __ L t _ 115 _700_P _I E t f rew3f rt Figure 4 23 700 MHz Transmitter Power Amplifier Schematic Diagram ...

Page 98: ... rut EB c I l C3205 I J I I t I t j _ _ _ __ 1 J_ J 11 03201 R32Q 47 C32H C3213 l L OM C32U 1 I C M I OM II g t l XTAJ 11 7 R320T f _ tr 1 XTAL2 r tt r _j Jo IA Tf l rT VMU l1 ll f VMLll4 AUX1 Rl20t 0 sv _ r 1 C320 I 2 1 C 1 I 01uF CD V_VHF_FN_2 0 W 700_FN 1 Atl 1 1 _j f IX OV U3201 WTI I t_ fN Ifl4 Raz l 100 C32 5 L R3Z15 I R3216 120 I C32W 7 D LOCK LOCK 11Xl FN 1 VCTnL_TOO_FN_1 to 1 V J VCTRI 3l...

Page 99: ...T IL C IJ l A v T N 11 t r 2 R l312 i 1 C1J07 I_ UMCSNTL L331 J Rl J2T ro l VV v RX_SW TX_ W Tc m I_NU 7l3 l I Wi C33H 5tpF t 0 LJln Si M11HA UI1S C TX4 V O RX466V H 27pF I VV 1 1 UllOJ 4SJ 105Uiz TX 22 u A RX 7on WJ_VIJ _VC0_2 I T M_700_ CCU E 3 f f Q_ CJVSF C3321 0 Spf C3310 NU c Olo F C NU VCTRl_7IJO VGO I Nv R3J14 t Jl J 1 I TK_SW TXUlV611ufl C ll I 4 33 Figure 4 25 700 MHz Voltage Controlled ...

Page 100: ...o r r f f CONIROllER t Pl olll2r tfil f t OZJMOI l o r ttlrt NtfN1 II r l t nl t I L Z o jlllllll r 1 f 0NIR ot I41UI r 1 Uoll l p _ _111 nn F 1 1 11l k A TH if W U B I I I N IO I 11 8S W T T4 1021211 1 t EI C IC o T O IoZ ll86 r MaoiiE l fl l l l 1 11 14 1 70 WC HIAHI MHf 1 700 MHz Schematic Diagrams Overlays and Parts Lists VOICE_Sl GRAGE PI CIOZI t IS 1 11 o 81Pt 11 lo j 8Y O I G J J0 1 PIO IO ...

Page 101: ..._ _ EEPR l t 19 bb I Y j WI I I Af b J ul l rt l il 8 I H P rtn u rx u 1V It v 1t 1191 VI 1 jl 1 ltlt1 1 1 I 1 1 llo r 1 1 t _ r _ l _ 1 f l10 u NU O VSf DIHSTAJIOA P I JOiil O USWINPR114Qtl Y j t 01io 1_ fT_ l _____ c s _IIJ III_Iit U I I _ 1 J 1 1 Ar t c i 0018 7K V IV 111 t c __ f 1 1 1 r flti_IH_O Jl_A Cl U I 1 4 35 Figure 4 27 700 MHz Microprocessor Schematic Diagram ...

Page 102: ...m NU 700 MHz Schematic Diagrams Overlays and Parts Lists c 11 J 11 l r ONI O c _ AA L r ct L f liAX SJ l FL T_RX SHO C t 2 7 C020ol t rtil 121 01ul hi 1 1 l I l 1 1 so_IN LLr _ _ ___ ___ _ _ _j Tu L D t IJtl f 1 T j t l L A N J T r d l i r r ii Vlll 7 f ...

Page 103: ... Fr_aJt n _Oil CUI _ I 11 RI I t a fit 0 E Iii I J 1 u 4 oil_ I IOUl l H U I o o Q U 1 U IO u o 7 OVD OVD so rLT_Ao 10 o AU i _ _1 i r IOXT_90_C5 _I IJT f 1 0 1 TQII H O M Rr nF g _ _ 1 ll o I UJ I o e L o c _ jr I U 1 a F PC I J c r t R t J QITC r r 1 ca c t 1 t i u r u _ r t t r o J J _j_ _ IP _ t I A tJCJ A Ot il ttoo_evt l _ ARM r _ C_ OUT i J t bo U SWQ DIQ _ot n RSSI S S A R REAR VIEW 4 37 T...

Page 104: ...l 700 MHz Schematic Diagrams Overlays and Parts Lists r PASLf VLI 1 11 l L FLT A R IG21 I r T J m ROO D i 6VD J J Joooo lluF NIJ W l ll t l C0681 I U o651 MC7 0S _ l tll t QOOIII Joos 01uF IJ06 Ft i RF S tUW_RF REG 1 f 4 N I 1 ll r EMEfb N _CONTRCll r Hi Figure 4 30 700 MHz Power Supply Schematic Diagram ...

Page 105: ... 2311049A57 10 uF 10 16 V C0434 2113741F49 0 01 uF 5 50 V C0542 2311049A99 47 uF 20 10 V C3026 2113740F31 15 pF C0221 2113743E20 0 1 uF 10 16 V C0441 2113743L09 470 pF C0554 not used C3027 2113740F22 6 2 pF C0222 2113743E20 0 1 uF 10 16 V C0442 2113743L09 470 pF C0558 not used C3028 2113740F44 51 pF C0224 2113740F51 100 pF C0225 2113743E20 0 1 uF 10 16V C0443 not used C0445 2113743L09 470 pF C0559...

Page 106: ...9 0 01 uF 5 50 V C3307 2113743E10 0 033 uF 10 16 V C3402 2113740F27 10 pF C3476 2111078809 6 8 pF C3206 2113743E20 0 1 uF 10 16 V C3308 2113740F44 51 pF C3403 2113740F51 100 pF C3477 2113740F44 51 pF C3207 2311049A09 2 2 uF 10 20 V C3309 2113743E20 0 1 uF 10 16V C3404 2113741F49 0 01 uF 5 50 V C3478 2113743E07 0 022 uF 10 16 V C3208 2113740F44 51 pF C3310 2113740F44 51 pF C3405 2113741F49 0 01 uF ...

Page 107: ...1 Digital NPN DTC144EKA R0116 not used D3470 4808379X02 Diode L3203 2462587008 220 nH Q0151 4880048M01 Digital NPN DTC144EKA R0117 0662057A63 3 9 K D3471 4808379X02 Diode L3204 2462587P25 12 uH Q0171 4880048M01 Digital NPN DTC144EKA R0121 0662057A97 100 K D3472 4882290T02 Dual Schottky Diode L3205 2462587V20 3 3 nH Q0173 4880052M01 Digital NPN DTC144EKA R0131 0662057B46 10 MEG D3473 4813825A05 Dio...

Page 108: ... 0662057A97 100 K R3326 0662057A77 15 K R0257 0662057A57 2 2 K R0642 0660076E70 7 5 K R3182 0662057A97 100 K R3327 0662057A77 15 K R0261 0662057A73 10 K R0643 0660076E51 1 2 K R3183 0662057A97 100 K R3328 0662057A85 33 K R0262 0662057808 270 K R0651 0662057A01 10 R3184 0662057802 150 K R3329 0662057A17 47 R0265 0662057A82 24 K R0652 0662057A01 10 R3185 0662057847 0 R3330 0662057A01 10 R0266 not us...

Page 109: ...602641Y02 Shield VCO Top 2580541Z02 Mixer Balun 2580541Z02 Mixer Balun 5102226J56 Microcontroller MC68HC11 FLO 5102463J64 EEPROM X25128 2 7 5186137B01 512K x Bbit Flash ROM 5185748L01 32K x Bbit SRAM 5113805A30 Demux MC74HC138A 5183222M49 Quad Opamp MC3403 5185130C53 ASFIC Audio Filter IC 5184704M60 Mux Demux HEF4053B 5102463J95 Audio Power Amp TDA1519C 5183308X01 Adjustable Voltage Regulator LM29...

Page 110: ...4 44 700 MHz Schematic Diagrams Overlays and Parts Lists This page intentionally left blank r ...

Page 111: ... J R652 s _F D DODDOOOO l 0 D iR c 0 a42 o g g fHl l 1 l l 0 f y l 8 BlS C656 I11 11111 1 1ullllll u 1 11111 0 08 C641 0 R666 0 w 0 r IIJIIIIIIIIIIIIUiflfliUlliiUU L 06340 0 n O lfL nQ D IJ 0665 c O m r l 2 CG24 L 1 N u o c 1 L C615LJ D c RGG uUlJ 1f f _ l Il CJ 0 Q c R611i lJ I l R670 n J J L LJ l Jco o ono o D609 J a oo u 0 o g d o noi c 1 1 1 1 1 CJ R61J 0 620 8 1 U lcsos fWr o cs3o 00 J a I C6...

Page 112: ...llll llil Ori Ad tA WI Jilll ll _ IQJnT RN Jiiii Jt lk lud W D Jol 111111 lilll if IX In l _ _ m lllr_o _ Sit lfl t D _ ilOJ Lil i lln R 101 1 JIIII K _A 4 mJQ fQ su M _ tilt m TI PTT a n Prr stD S io aw _ m lNT 1111n Jfll IEKT HI II l LJU Q o WLI o ICO 2 t tl l I IMIIItl m go JII I M tl al l n tal _ o t IJf IJ Gh U n DI II 14 11 CUI I 1111 1 I c GIIoli 1 r JiOi Q Q d FU f JII 110 mt oCI Q ol JIII...

Page 113: ......

Page 114: ... Inc LTR is a registered trademark of E F Johnson Company PassPort is a registered trademark of Trident Datacom Technologies Inc All other product or service names are the property of their respective owners 2002 Motorola Inc All rights reserved Printed in U S A 1111 1 1111 lll lil llll 6864110R14 0 1 ...

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