Page 1 MCS 2000 Mobile Radio Service Instructions Volume 1 Non-Frequency Range Speciﬁc 68P81083C20-A, Issued: 02.97.
Page 2: Computer Software Copyrights
Motorola. Furthermore, the purchase of During normal use, the radio will subject you to radio Motorola products shall not be deemed to grant either energy substantially below the level where any kind of directly or by implication, estoppel, or otherwise, any harm is reported.
Page 3 FCC adopted standard, transmit with • Do not connect accessories other than Motorola any mobile radio only when bystanders are at least two compatible equipment, as it may damage the radio.
Page 4 W A R N I N G Repeat Step 5. except do so while microphone IS Motorola recommends the following radio installation being spoken into. precautions and vehicle braking system test procedures to ensure that the radio, when transmitting, does not Release brake pedal completely and accelerate interfere with operation of the vehicle braking system.
Page 5: Table Of Contents
Table of Contents 1 - Introduction ............1-1 Scope of this Manual .
Page 6 Remove the PA Shield L ......... .5-4 OW AND OWER ODELS...
Page 7 Bootstrap Microprocessor Operation..........7-16 Audio and Signalling Circuits .
Page 8 SB9600, Simplified Schematic for Charts 1-10 & 1-11 ....... . . 9-27 Troubleshooting Chart 1-12, GPIO .
Page 9 List of Figures RF and Power Connector Openings ..........2-5 Install Connector Retaining Clip .
Page 10 List of Tables Kit-to-Model Structure for VHF and UHF Radios ........1-5 Kit-to-Model Structure for 800 and 900 MHz Radios .
Page 11: Introduction
I, II and III. • 68P81080C05: MCS 2000 Short Form User Guide for Model I. • 68P81080C10: MCS 2000 Short Form User Guide for Models II and III. • 68P81077C65: FlashPort User’s Guide. • 68P81077C15: SmartZone RSS Manual.
Page 12: Model Numbering System
Model Numbering System Typical Model Number: Position: 12 13 Position 1 - Type of Unit Positions 13 - 16 “SP” Model Suffix M = Mobile Radio Position 12 - Unique Model Variations Positions 2 & 3 - Model Series N = Standard Package Position 4 - Frequency Band Position 11 - Version 66 to 88MHz...
Page 13: List Of Models
List of Models PRIVATE SYSTEMS RADIOS MCS 2000 Model Family Model Number Frequency Range Power Level Control Head Model Channel Spacing No. of Modes M01JLM9PW6_N 136 - 162 MHz 50-110 Watts Model II, 1x14 digits 25/20/12.5 kHz M01JLN9PW6A_N 136 - 162 MHz...
Page 14 PRIVATE SYSTEMS RADIOS MCS 2000 Model Family Model Number Frequency Range Power Level Control Head Model Channel Spacing No. of Modes M01UGN6PW6_N 806 - 870 MHz 15 Watts Model III, 2X14 digits 20/25 kHz M01UGH6PW6_N 806 - 870 MHz 15 Watts...
Page 15: Kit-To-Model Structure
Kit-To-Model The cross-reference charts below show the kit breakdown for each of the MCS 2000 models. Table 1-1 covers the VHF and UHF models and Table 1-2 Structure covers the 800 MHz and 900 MHz models. Table 1-1 Kit-to-Model Structure for VHF and UHF Radios...
Page 16: Kit-To-Model Structure For 800 And 900 Mhz Radios
Table 1-2 Kit-to-Model Structure for 800 and 900 MHz Radios Model Description • • • • M01UGL6PW4_N, 800MHz, 15W, Mod. I • • • • M01UGM6PW6_N, 800MHz, 15W, Mod. II • • • • M01UGN6PW6_N, 800MHz, 15W, Mod. III M01UGH6PW6_N, 800MHz, 15W,Hand hld •...
Page 17: Specifications
SPECIFICATIONS FOR VHF, 1-25 WATT RADIOS European Telecommunication Standard ( All speciﬁcations are per ETS) 300-086 unless otherwise noted. GENERAL RECEIVER TRANSMITTER Temperature Range: Frequency Range: 136-174MHz Frequency Range: 136-174MHz -25 to +55 ° C Operating: -40 to +85 ° C Maximum Frequency Separation: 38 MHz RF Power:...
Page 18 SPECIFICATIONS FOR VHF, 25-50 WATT AND 50-110 WATT RADIOS All speciﬁcations are per Electronic Industries Association (EIA) 603 unless otherwise noted. TRANSMITTER GENERAL RECEIVER (FCC Designation: Frequency Range: (50-110 W) 136-162MHz Frequency Range: (50-110 W) 136-162MHz 136-174 MHz, 110 W AZ492FT3781) (50-110 W) 136-174 MHz (50-110 W) 136-174 MHz...
Page 19 SPECIFICATIONS FOR UHF, 1-10 WATT AND 10-25 WATT RADIOS European Telecommunication Standard ( All speciﬁcations are per ETS) 300-086 unless otherwise noted. RECEIVER TRANSMITTER GENERAL Temperature Range: Frequency Range: 403-470 MHz Frequency Range: 403-470 MHz Operating: -25 to +55°C Maximum Frequency Separation: 67 MHz RF Power: 1 - 10 Watts variable...
Page 20 SPECIFICATIONS FOR UHF, 25-40 WATT, 50-110 WATT RADIOS All speciﬁcations are per Electronic Industries Association (EIA) 603 unless otherwise noted. TRANSMITTER GENERAL RECEIVER (FCC Designation: Frequency Range: Frequency Range: 403-470 MHz, 110 W AZ492FT54797) 403-470 403-470*MHz 450-512MHz 450-512MHz Temperature Range: Operating: -30 to +60°C Maximum Frequency Separation:...
Page 21 SPECIFICATIONS FOR 800 MHZ, 15 WATT AND 30-35 WATT RADIOS All speciﬁcations are per Electronic Industries Association (EIA) 603 unless otherwise noted. RECEIVER TRANSMITTER GENERAL FCC Designation: 30-35W: AZ492FT5773 Frequency Range: 851-866MHz Frequency Range: 15W: AZ492FT5765 866-870MHz 806-821 & 821-825MHz (Talkaround) 851-866 &...
Page 22 SPECIFICATIONS FOR 900 MHZ, 12 WATT AND 30 WATT RADIOS All speciﬁcations are per Electronic Industries Association (EIA) 603 unless otherwise noted. TRANSMITTER GENERAL RECEIVER FCC Designation: 30W: AZ492FT5773 Frequency Range: 896-941MHz Frequency Range: 896-941MHz 12W: AZ492FT5765 Maximum Frequency Separation: 6 MHz Maximum Frequency Separation: 45 MHz...
Page 23: Basic Maintenance
Basic Maintenance Introduction This chapter of the manual describes preventive maintenance, safe handling of CMOS devices, and repair procedures and techniques. Each of these topics provides information vital to the successful operation and maintenance of your radio. Preventive The radios do not require a scheduled preventive maintenance program; however, periodic visual inspection and cleaning is recommended.
Page 24: Safe Handling Of Cmos Devices
17. Use a static-safeguarded workstation, which can be accomplished through the use of an anti-static kit (Motorola part number 01- 80386A82). This kit includes a wrist strap, two ground cords, a static- control table mat and a static-control ﬂoor mat. For additional information, refer to Service and Repair Note SRN F1052, “Static Control...
Page 25: Parts Replacement And Substitution
18. Always wear a conductive wrist strap when servicing this equipment. The Motorola part number for a replacement wrist strap that connects to the table mat is 42-80385A59. 19. When straightening CMOS pins, provide ground straps for apparatus used. 20. When soldering, use a grounded soldering iron.
Page 26: Audio Pa Component Replacement Procedure
Remove the faulty component in the Audio PA section of the main board. Ensure that the through-holes are free of solder. Place the main board in a chassis eliminator (Motorola Part Number 2705815W03). Assemble the screws based on the Screw-Down sequence in Figure 5-19.
Page 27: Antenna/Power Connector Replacement Procedure
Antenna/Power Connector Replacement Procedure For Low, Mid, and High Power Models Note that Figures show High Power Chassis, but apply to all power levels. Remove damaged connector by heating the solder Power Connector joints until they reﬂow. Pull connector from board RF Connector Opening with small pliers or like instrument.
Page 28 NOTES Basic Maintenance...
Page 29: Test Equipment, Service Aids, And Tools
The “Characteristics” column is included so that equivalent equipment may be substituted; however, when no information is provided in this column, the speciﬁc Motorola model listed is either a unique item or no substitution is recommended.
Page 30: Service Aids And Recommended Tools
Motorola. The following table lists service aids recommended for working on the radio. While all of these items are available from Motorola, most are standard shop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed.
Page 31: Recommended Service Tools
Conventional StatAlert software. (3 1/2” ﬂoppy disc, English version) GVN6011* (Eng) Radio Service Software For programming of MCS 2000 radios with Conventional Select 5 software. GVN6012* (Ger) 2000 & 2100 Series Select 5 Only compatible with VHF and UHF 1-25 Watt models. (3 1/2” ﬂoppy disc)
Page 32: Connection Of Control Head Extender Cable
Connection of Control Head Extender Cable Failure to follow these instructions may cause severe damage to the control head. C a u t i o n Mid Power Chassis Place radio on bench with ﬁns facing downward and away. Remove the plastic cover. This position leaves the top side of the PC boards fully exposed and the 18 pin connector (see Table 3-4) facing the operator.
Page 33: Test Mode And Error Codes
Test Mode and Error Codes Test Mode General The test mode allows the technician to monitor a set of radio parameters, to conﬁgure the radio hardware in a number of predeﬁned ways, and have access to a number of test procedures. Two basic areas of functionality are provided by the Test Mode: •...
Page 34: Dedicated Test Mode Keys On Models I, Ii And Iii
To exit either the RF Test Mode or the CH Test Mode turn the radio off. • Button : used as Select Key and for Test Mode Entry • Button : used as Scroll Key ODEL ODEL ODEL Figure 4-1 Dedicated Test Mode Keys on Models I, II and III RF/CH Test Mode Pressing the scroll key alternates between the two Mode Select menus...
Page 35: Error Code Displays
• TPL (Tone Private Line) • DPL (Digital Private Line ) • TLS (Trunking Low Speed) • THS (Trunking high speed) • DTM (Dual Tone Modulation Frequency) • M12 (MDC 1200) When the appropriate environment is selected the test mode application will conﬁgure the radio hardware for this environment.
Page 36: Operational Display Codes
Self-test errors are classiﬁed as either fatal or non-fatal. Fatal errors will inhibit user operation, while non-fatal errors will not. Use Table 4-1 to aid in understanding particular power-up error code displays. TYPE OF FAILURE DISPLAY DESCRIPTION POSSIBLE SOURCE FAILURE FAIL 01/81 FATAL External ROM/Flash checksum error...
Page 37: Disassembly & Reassembly And Replacement Procedures
Disassembly & Reassembly and Replacement Procedures General The disassembly/reassembly procedure covers all radio models. Speciﬁc model information is included in the procedure where relevant. Where nothing is indicated, the procedure will be valid for all models. DO NOT attempt to disassemble the radio without ﬁrst referring to the CMOS Precautions paragraph on page 2-2 in the Maintenance section.
Page 38: Remove Front Housing Remote Mount Version Models Only
The control head must be removed before removing the transceiver top cover. C a u t i o n Pull the control head off of the transceiver while pressing the snaps. (Go to “Remove the Top Cover” section below). Remove Front Disconnect the Remote Mount Cable by squeezing the top and bottom of the connector together, disengaging the bottom snap then the top Housing...
Page 39: Remove The Cavity Shield Low Power Models Only
Repeat Step 1. and Step 2. for the opposite side of the radio. Disengage Snap here and on other side Figure 5-3 Removing the Top Cover - Mid Power Models Remove the Cavity Eight tabs hold the cavity shield to the chassis. The cavity Shield shield is the retaining device for the transceiver board and Note...
Page 40: Remove The Pa Shield L
Remove the PA Unscrew the three screws that hold the PA shield with T-10 TORX driver. Shield Remove the PA shield by pulling straight up on the attached handle. OW AND OWER ODELS PA Section & PCB Holding Screws (3) Figure 5-5 Removing the PA Shield (Low and Mid Power Models) Remove the Transceiver Board...
Page 41: Removing The Transceiver Board - Mid Power Models (Except 800 Mhz And 900 Mhz)
Carefully remove the transceiver board by rotating it out of the chassis. Slowly lift the board on the front edge while pushing up on the board through the accessory connector opening. Pull the board forward out of the chassis. Remove the Accessory Connector by sliding a ﬁnger into the recess on OWER ODELS the chassis and pushing up on the connector tab to loosen the...
Page 42: Remove The Transceiver Board 800 Mhz And 900 Mh Z Models Only
Remove the Remove the Accessory Connector by sliding a ﬁnger into the recess on the chassis and pushing up on the connector tab to loosen the Transceiver Board connection. Lift the connector out of the recess. 800 MH 900 MH Z AND Remove all screws using a T-10 TORX driver.
Page 43: Disassembly To Transceiver Board Level High Power Models
Disassembly to Transceiver Board Level High Power Models DO NOT attempt to disassemble the radio without ﬁrst referring to the CMOS Precautions paragraph on page 2-2 in the Maintenance section. C a u t i o n Remove the Disconnect the Remote Mount Cable by squeezing the top and bottom of the connector together, disengaging the bottom snap then the top, Bottom Cover and pulling straight out.
Page 44: Remove The Rf Shield
Insert a wide ﬂat-blade screwdriver or like instrument in the recess area on the side of the radio near the antenna and power connector ends (see Figure 5-11). Pry the bottom cover off the chassis by pushing the handle of a screwdriver up and toward the radio.
Page 45: Remove The Pa Shield
Remove the PA Pull straight up on the PA shield using the supplied handle. Shield PA Shield Handle Figure 5-13 Removing the PA Shield Remove the PA Unscrew the 6 recessed, PA device screws using a T-8 Torx driver. Unscrew the remaining screws (9 for VHF, 11 for UHF) using a T-10 Torx Board driver.
Page 46: Remove The Rf Board
Remove the RF Remove the 18 position connector by pulling it straight out from the chassis taking care not the bend the leads. Board Remove the Audio PA Clip by inserting a ﬂat-blade screwdriver under the clip´s extended tab, pivoting off the top of the underlying wall, and gently prying the clip upward.
Page 47: Disassembly Of The Control Head
Disassembly of the Control Head Remote Mount Disconnect the Remote Mount Cable by squeezing the top and bottom of the connector together, disengaging the bottom snap then the top, Versions and pulling straight out. Remove the back housing by inserting a small ﬂat-blade screwdriver or like instrument into the recess on the short side of the control head exterior, taking care not to mar the surface.
Page 48 On Model II , also remove the rotary knob on the right side of the unit by pulling straight up. Remove the control head board by prying back on the four visible light pipe snaps. Carefully remove the board from the housing. Gently pull the board straight up so not to damage the volume potentiometer and the microphone connector leads.
Page 49: Reassembly Of The Control Head
Reassembly of the Control Head Model I Place the LCD, colour sheet, LCD frame, and elastomeric connector into the housing. Make sure that the LCD aligns with the gasket in the housing. Place the keypad into the board assembly, making sure that the keypad is ﬂush with the board.
Page 50: Transceiver Reassembly Low And Mid Power Models
Transceiver Reassembly Low and Mid Power Models Transceiver Reassembly • Replace all gaskets at each servicing to ensure proper sealing of unit. Notes • Be careful to use only very little thermal grease as an excessive quantity will deteriorate the conductivity. Inspect and reapply thermal grease as needed to the areas shown in Figure 5-16.
Page 51: Assembly Of Control Head To Transceiver Dash Mount Models
driver (see Figure 5-7). Install the remaining screws (except the three screws that retain the PA shield) with 6-8 in lbs of torque using a T-10 Torx driver. On Mid Power Models Only: Install the PCB and Audio PA clips. 10.
Page 52: Transceiver Reassembly High Power Models
Transceiver Reassembly High Power Models Replace all gaskets at each servicing to ensure proper sealing of unit. Note Inspect and reapply a thin coat of thermal compound as necessary to the heatsinking pads, voltage regulator and Audio PA areas in the chassis per Figure 5-17.
Page 53: Reassembly Screw Down Sequence
Replace the 25-D connector gasket on the transceiver board. Replace the RF and power connector gaskets on the PA board. Install the PA board carefully at an appropriate angle (approximately 30 to the chassis connecting the 2 and 12 pin connectors to the RF board. Install the 2 PA connector retaining clips over the RF and power connectors and chassis wall.
Page 54: Inserting Audio Pa Clip
Install the Audio PA clip to the corner of the chassis (per Figure 5-20) by applying downward, equal pressure to the side and main tab of the clip. Side pressure on the clip will negatively impact heat sinking of the 5 V Regulator and Audio PA.
Page 55: Installing Cover Gasket
Locking Tab (other tab on opposite side of chassis) Gasket twist direction Lowest point of gasket locating feature “V” Figure 5-21 Installing Cover Gasket 14. Install the accessory connector assembly through the bottom side of the radio. Be sure to install the connector straight down into the unit because otherwise it will catch on the housing and no connection will be made.
Page 56: Replaceable Pushbuttons Replacement Procedure
Replaceable Pushbuttons Replacement Procedure Availability of replaceable pushbutton control heads depends upon date order was placed, shipped and based upon options ordered. Contact your Note Parts division for aftermarket kits and parts. Models II & III EYPAD WITH EPLACEABLE USHBUTTONS There are ﬁve sizes of replaceable pushbuttons, which are designated sizes A, B, C, and D.
Page 57 ﬂat end pliers to grasp pushbutton to be removed. C a u t i o n Grasp pushbutton to be removed with ﬂat end pliers (Motorola Part Number 6685629A01) as close as possible to control head faceplate. In step 2 below, to avoid damage to pushbutton, compress pushbutton only enough to allow tabs on pushbutton to clear edges of hole in faceplate.
Page 58: Grasping Pushbutton With Flat End Pliers
Verify that tabs on replacement pushbutton are engaged behind control head faceplate and that pushbutton operates freely. Using RSS software and manual, reprogram the radio so that replaced pushbutton has the desired function. MEPC-96618-O/None Figure 5-25 Grasping Pushbutton with Flat End Pliers Control Head Faceplate Pushbutton...
Page 59: Replaceable Pushbutton Graphics And Part Numbers
Table 5-1 Replaceable Pushbutton Graphics and Part Numbers Graphic Pushbutton Part Number Legend Description Color Size A Size B Size C Size D Size E BLANK Blank White 3805230Z01 3805231Z01 3805232Z01 3805233Z01 3805234Z01 BLANK Blank Orange 3805230Z18 3805231Z14 3805232Z10 3805234Z10 Black 3805230Z42 3805231Z42...
Page 60 Graphic Pushbutton Part Number Legend Description Color Size A Size B Size C Size D Size E Call Symbol Black 3805230Z26 3805231Z13 3805232Z22 3805234Z07 Emergency White 3805230Z27 3805231Z02 3805232Z23 3805234Z02 Symbol Emergency Orange 3805230Z19 3805231Z15 3805232Z11 3805234Z11 Symbol Horn/Light Black 3805230Z28 3805231Z10 3805232Z24...
Page 61 Graphic Pushbutton Part Number Legend Description Color Size A Size B Size C Size D Size E Decimal Black 3805233Z02 Number Decimal Black 3805233Z03 Number Decimal Black 3805233Z04 Number Decimal Black 3805233Z05 Number Decimal Black 3805233Z06 Number Decimal Black 3805233Z07 Number Decimal Black...
Page 62 NOTES 5-26 Disassembly & Reassembly and Replacement Procedures...
Page 63: Radio Tuning Procedure
Radio Tuning Procedure General An IBM PC (personal computer) and RSS (Radio Service Software) are required to align the radio. Refer to the applicable RSS Manual for installation, setup procedures for the software and minimum computer requirements. To perform the alignment procedures, the radio must be connected to the PC, RIB (Radio Interface Box), and Test Set as shown in Figure 6-1.
Page 64: Service Menu Structure For Rvn4113
In RVN4113 all service and tuning procedures are performed from the SERVICE menu, which is selected by pressing F2 from the MAIN MENU. Figure 6-2 illustrates how the MCS 2000 RSS SERVICE screens are organized. In GVN6011 all service and tuning procedures are performed from the TUNE RADIO menu which is entered by pressing F2 , F5 from the MAIN MENU.
Page 65: Tuning Procedure
graphical scale is displayed indicating the minimum, maximum, and proposed value of the softpot, as shown in Figure 6-3. Adjusting the softpot value sends information to the radio to increase (or decrease) a DC voltage in the corresponding circuit. For example, pressing the UP arrow key at the Reference Oscillator screen instructs the radio microprocessor to decrease the voltage across a varactor in the reference oscillator, which decreases the frequency.
Page 66: Transmitter Power
Transmitter Power The radio requires two power level adjustments, a high power or rated power adjustment, and a low power adjustment. • After POWER tuning, measure and note the DC current to the radio on each channel in the high power level. These values are needed for the Note Current Limit tuning.
Page 67: Transmit Current Limit
Press F6 to key the radio, and use the UP/DOWN arrow keys to adjust the transmit power per the value shown in Table 6-2. Press F6 to dekey the radio, and then press F8 to program the value. Press ENTER to select next softpot frequency. Repeat steps 4 and 5 for the remaining test frequencies.
Page 68: Transmit Deviation Limit
Begin with the lowest test frequency shown on the screen. With Test Box RLN4460A: Set the test box METER OUT switch to the AUDIO IN position, and inject a 80 Hz tone at 100 mVrms into the AUDIO IN BNC connector. To ensure proper signal level measure on METER OUT jack with AC voltmeter.
Page 69: Transmit Deviation Limit Reference
Transmit This procedure is only required for VHF and UHF models with Deviation Limit Note 20 kHz and 12.5 kHz channel spacing. Reference These softpots set the deviation reduction ratio to transmit at 20 kHz or 12.5 kHz channel spacing. Press F6 to select the TRANSMIT DEVIATION LIMIT 12.5/20 kHz softpot.
Page 70 Press F6 again to dekey the radio. Press F8 to program the softpot value; press F10 twice to return to the SERVICE menu. High Speed From the SERVICE menu, press F4 to select SIGNALING alignment Deviation Press F3 to select the TRUNKING HIGH SPEED softpot. Press F6 to key the radio on the test frequency.
Page 71: Squelch
Select 5 Transmit This tuning sequence is ONLY for radios with Conventional Deviation Note Select 5 Signaling software being tuned with the RSS (GVN6011 only) GVN6011. The Select 5 Deviation Softpot is used to tune the FFSK signaling deviation. Tuning is performed at one frequency and for 25 kHz channel spacing. The radio generates a Select 5 signal for tuning.
Page 72: Rated Audio
Rated Audio Alignment of the Rated Audio is not required on these radios. Front-End Pre- Alignment of the front-end pre-selector is not required on these radios. Selector 6-10 Radio Tuning Procedure...
Page 73: Controller Section Theory Of Operation
Controller Section Theory of Operation Introduction The radio is a microcontroller-based dual mode (trunked/conventional) transceiver. The microcontroller determines the active state of the radio (transmit/receive), monitors radio status, and processes operator commands entered from the keypad or the other radio controls. In the Low and Mid Power versions of the radio all radio circuitry is contained on a single rigid printed circuit board (PCB).
Page 74: Voltage Regulation
• microprocessor operation • audio and signalling processing The controller is based on the Motorola 68HC11F1 microprocessor (U0103). In addition to the microprocessor, the controller has 3 external memory devices, signal MUX IC (U0105), and a Support Logic IC (SLIC IV, SLIC IVa, or SLIC V, U0104).
Page 75: Electronic On/Off
UNSW 5V is only used in a few areas which draw low current and requires 5 V while the radio is off. Electronic On/Off Unlike older radios whose on/off feature was controlled only by the mechanical on/off switch, this radio has circuitry which allow radio software and/or external triggers to turn the radio on or off without direct user action.
Page 76: Mechanical On/Off
microprocessor has ﬁnished processing the emergency press, it sets the B+ CNTL output to a logic 0. This turns off Q0511 and the radio turns off. Notice that EMER TRIG also goes to U0104-D5 and U0003-F2. This is where the appropriate microprocessor is alerted to the emergency condition.
Page 77: Operator Action Vs Resultant Radio States
Ignition input is active and sets the B+ CNTL output to a logic 1 to latch on SW B+. If the software determines that the radio should not be operating, it will set the CLEAR output to a logic 1 and the B+ CNTL output to a logic 0. This sets a latch composed of Q0514 - Q0517, R0519 and R0521.
Page 78: Power Control
This Action During This State of Radio Causes The Following Radio States to Occur Present State of Radio Functions Available Through Ignition Sense Programmed in RSS Receive/ Blank Soft Power Off Action Stand-by/ Ignition (Default from Default from TX Inhibit PTT Inhibit Emergency Factory...
Page 79 The microprocessor controls K9.1 enable (K9.1 ENB) to bias the PA and antenna switch, PA disable (PA DIS) to disable the PA control voltage, and power range (PWR RANGE) to adjust the number of D/A steps per watt. The Power Range Mode is not used on all models. Note The ALC loop regulates power by adjusting the PA control line PA CNTL to keep the forward power voltage V FORWARD at a constant level.
Page 80: Protection Features
U0551 pin 13. The PA control voltage at U0550 pin 8 connects to opamp noninverting input U0202 pin 3 through the voltage divider formed by R0592 and R0591 and lowpass capacitor C0572. Control voltage limit is set by the D/ A output PA CNTL LIM at U0551 pin 13 which connects to inverting input U0202 pin 2 through R0584, Q0556 and R0590.
Page 81: Interfacing
that is approximately equal to the voltage present at the inverting input during the maximum current voltage drop through R5612. PA control voltage limit consists of a portion of the control voltage fed back to the power control loop. PA_CNTL_LIM is produced by a voltage divider network on the PA board.
Page 82: Clock Distribution Block Diagram
TRANSCEIVER FRACTIONAL DIVISION SYNTHESIZER PENDULUM ELECTRONIC CLOCK GENERATION 2.1 MHz QUARTZ CRYSTAL 16.8 MHZ ZERO I.F. SPI-CLOCK F REF OUT SPI-CLOCK AUDIO SIGNALLING FILTER IC ELECTRONIC CLOCK GENERATION, PROGRAMMABLE RANGE: 1200 Hz to 32.769 MHz (1200 Hz STEPS) uP-CLOCK MC68HC11F1 MICRO CONTROLLER 68HC11K4 uP SLIC IVa OR...
Page 83: Sb9600 Serial Interface
The timing and operation of this interface is speciﬁc to the option connected, but generally follows the pattern 1) an option board device generates the interrupt, 2) main board asserts a chip for that option board device, 3) the main board µ P generates the CLK, and 4) when data transfer is complete the main board terminates the chip select and CLK activity.
Page 84: General Purpose Input/Output
An option can reset the radio by driving the LH RESET line to a logic 1. This gets buffered by Q0409 and Q0425 and goes to the reset input of SLIC (U0104- A8). This then causes the reset input of the µ P (U0103-50) RESET to go to a logic 0 resulting in the µ...
Page 85: Normal (=Expanded) Microprocessor Operation
In expanded mode on this radio, the µ P has access to 3 external memory Normal devices; U0100 (EEPROM), U0101 (SRAM) U0102 (FLASH EEPROM). In (=Expanded) addition the µ P has access to U0104 (SLIC). Also, within the µ P there are 1 Microprocessor Kbytes of internal RAM and 512 bytes of internal EEPROM, as well as logic to Operation...
Page 86 running, this signal is an open-drain CMOS output which goes low whenever the µ P begins a new instruction (an instruction typically requires 2-4 external bus cycles, or memory fetches). However, since it is an open-drain output, the waveform rise assumes an exponential shape similar to an RC circuit. There are 8 analog to digital converter ports (A/D) on U0103.
Page 87 The circuitry in the SLIC is reset when either the RESET IN (U0104-A8) is a logic 1, or RESET* (U0104-E4) is a logic 0, or PWR RST is a logic 0. These lines must be in the opposite logic state for the SLIC to function normally. The SLIC supports hardware signalling decoding for certain signalling standards such as MPT 1327 and Trunking (OSW).
Page 88: Bootstrap Microprocessor Operation
Additional EEPROM is contained in the µP (U0103). This EEPROM is used to store radio tuning and alignment data. Like the external EEPROM this memory can be programmed multiple times and will retain the data when power is removed from the radio. Note: the external EEPROM plus the 512 bytes of internal EEPROM in the 68HC11F1 comprise the complete codeplug.
Page 89: Audio And Signalling Circuits
Audio and (Refer to ASFIC schematic page 10-23 for reference) Signalling Circuits Audio Signalling The ASFIC has 4 functions; Filter IC (ASFIC) RX/TX audio shaping, i.e. ﬁltering, ampliﬁcation, attenuation RX/TX signalling, PL/DPL/HST/MDC/MPT Squelch detection Microprocessor clock signal generation (see Microprocessor Clock Synthesizer Description Block).
Page 90: Transmit Audio Paths
enabled or disabled in the ASFIC is the VOX. This circuit, along with C0205, provides a DC voltage that can allow the µP to detect microphone audio. The ASFIC can also be programmed to route the microphone audio to the speaker for public address operation.
Page 91: Transmit Signalling Circuits
DTMF data for telephone communication in trunked and conventional systems, and MDC data for use in Motorola proprietary MDC systems. Select 5 and MPT-1327 signalling can be supported by the MDC signaling hardware. Controller Section Theory of Operation 7-19...
Page 92: Transmit Signalling Paths
Sub-audible Data Sub-audible data implies signalling whose bandwidth is below 300 Hz. PL and (PL/DPL) DPL waveforms are used for conventional operation and connect tones for trunked voice channel operation. The trunking connect tone is simply a PL tone at a higher deviation level than PL in a conventional system. Although it is referred to as “sub-audible data,”...
Page 93: Receive Audio Circuits
these signals may also pass through a data pre-emphasis block in the ASFIC. Also these signalling schemes are based on sending a combination of 1200 Hz and 1800 Hz tones only. Microphone audio is muted during High Speed Data signalling. Dual Tone DTMF data is a dual tone waveform used during phone interconnect operation.
Page 94: Receive Audio Paths
SQ DET is used to determine all audio mute/unmute decisions except for Conventional Scan. In this case CH ACT is a pre-indicator as it occurs slightly faster than SQ DET. Audio Processing The signal enters the controller section from the ZIF on DISC (IF1-3-2-1) and and Digital Volume passes through RC ﬁlter R0245 and C0236 which ﬁlters out ZIF sampling noise.
Page 95 programmable attenuator whose level is set depending on the value of the volume control. Finally the ﬁltered audio signal passes through an output buffer within the ASFIC. The audio signal exits the ASFIC at RX AUDIO (U0200-J4). The µP programs the attenuator, using the SPI BUS, based on SB9600 messages from the control head.
Page 96 Handset Audio Certain hand held accessories have a speaker within them which require a different voltage level than that provided by U0203. For those devices RX HI (Refer to schematic is available at J0405-8. page 10-29 for reference) The received audio from the output of the ASFIC’s digital volume attenuator is also routed to U0202 pin 6 where it is ampliﬁed 15 dB;...
Page 97: Receive Signalling Circuits
follows a path identical to conventional receive audio, where it is ﬁltered (300- 3 kHz) and deemphasis. Receive Signalling (Refer to Figure 7-5 for reference for the following sections) Circuits The ASFIC (U0200) is used to ﬁlter and limit all received data. The data enters the ASFIC at U0200-J7.
Page 98 The allowable internal alert tones are 304, 608, 911, and 1823 Hz. In this case a code contained within the SPI BUS load to the ASFIC sets up the path and determines the tone frequency, and at what volume level to generate the tone. (It does not have to be related to the setting of the volume knob).
Page 99 dynamic range of a 12.5 kHz bandwidth channel as is obtained in a 25 kHz bandwidth channel. The compressor raises low level signals and lowers high level signals. The compressor circuit produces a signal whose output voltage (U0250-F3) is based on the input voltage level (U0200-A6) of the signal.
Page 100 Some example levels are: 100 mV EXP IN == 52 mV EXP OUT 191 mV EXP IN == 191 mV EXP OUT 250 mV EXP IN == 327 mV EXP OUT Again this operation is NOT A FUNCTION OF FREQUENCY between 300 Hz and 3 kHz.
Page 101: Control Heads
Control Heads Model I Introduction The Control Head forms the interface between the radio and the user. It contains an LCD display, on/off and volume switch, keypad and control keys. The microprocessor controlled Control Head interfaces to the radio control logic board J0650 via an 18-pin connector on the back of the unit.
Page 102: Keypad
Driver The LCD driver U0651 contains the default character set. Its interface is a four line serial interface. The LCD driver is connected to the µ C on pins PA0 - PA3. The driver has a built in oscillator with one external resistor, R0700, deﬁning the clock frequency.
Page 103: Introduction
If the output is short circuit to ground for more than 1 second, the µ C senses this and switches to keyload mode (via PC7 output). Normal Mode Typically a microphone with no microprocessor is connected to the microphone connector. Inputs in this mode include PTT, Monitor and Auxiliary.
Page 104: Micro-Controller
Micro-controller Micro-controller U0653 and Data Expander U0654 control the operation of the Control Head. The µ C exchanges data with the radio via the SB9600 bus (TD0 and RD1) and monitors inputs from the microphone connector via the A/D port (PD0-PD7). In addition keypad and LCD data is processed via ports A, B and C.
Page 105: Rotary Switch
by the µ C (PB0-PB4/PC0-PC4). Only Control Head model J contains a full keypad. Rotary Switch Rotary switch R0697 (Control Head model I only) is a double wiper continuous turn 16-step potentiometer. The two wipers are connected to two A/D inputs on the µ C U0653 (PD1, PD2). One input covers 8 steps from 0 ° to 180 °...
Page 106 NOTES Control Heads...
Page 107: Troubleshooting
Troubleshooting This chapter contains the troubleshooting ﬂowchart diagrams for the Overall radio and for the Controller section of the radio as well as the Control Heads. Troubleshooting ﬂowcharts for the RF section will be found in Volume 2a, 2b, 2c, 2d or 2e of this manual depending on the frequency range. Refer to the SECURENET option service manual (part number 68P81083C25) for troubleshooting information and troubleshooting ﬂowchart diagrams for the SECURENET Option for the radio.
Page 108: Troubleshooting Chart 1-1, Overall Radio
Troubleshooting Chart 1-1, Overall Radio CHART 1-1 OVERALL RADIO START Radio Setup A+ = 13.6V, Accessory Connector plugged in, Control Head plugged in, Emergency Jumper in place (Speaker Jumper in place Model 1 only) Attach known good Pressing GOTO GOTO Errors Display control head using...
Page 109: Troubleshooting Chart 1-2 (1 Of 3), Failure Codes
Troubleshooting Troubleshooting Chart 1-2 (1 of 3), Failure Codes CHART 1-2 FAILURE CODES (1 of 3) Radio power up GOTO Band Specific Fail Fail Fail Fail Fail Fail 01/88 01/98 01/82 01/81 Synthesizer Chart 01/92 Note 1 To Sheet 2 Program Repair or Check...
Page 110: Troubleshooting Chart 1-2 (2 Of 3), Failure Codes
Troubleshooting Chart 1-2 (2 of 3), Failure Codes Fail Error Fail Fail 01/90 01/02 01/84 01/94 From Sheet 1 To Sheet 3 Voltages GOTO J0405 Program Program on J0403-5, 6,18 Control Head codeplug codeplug per Chart Chart 1-8 Repair or Program Fail Problem...
Page 111: Troubleshooting Chart 1-2 (3 Of 3), Failure Codes
Troubleshooting Troubleshooting Chart 1-2 (3 of 3), Failure Codes Fail Error 01/01 From Sheet 2 GOTO SB9600 DATA on Program Check DATA on codeplug Bus Rx Chart 1-10 U0103-63 U0103 U0105-13 Check Fail Problem U0105 Fixed GOTO SB9600 DATA on DATA on WARNING Bus Rx Chart 1-10...
Page 112: Troubleshooting Chart 1-3, On/Off Circuit
Troubleshooting Chart 1-3, On/Off Circuit CHART 1-3 ON/OFF CIRCUIT TROUBLESHOOTING START Press Note: On/Off Switch Refer to IC Troubleshooting Procedure before replacing any IC’s. R0518 Repair or on U0510-6 Replace R0518 GOTO Control Head Chart 1-8 Pulse Check U0510, on U0510-5 R0512, C0511 13.6V Check CR0510,...
Page 113: Troubleshooting Chart 1-4, Tx Audio
Troubleshooting Chart 1-4, TX Audio START Inj: 1KHz Tone, 80mVrms at the Internal Microphone 1KHz Check for solder defects Ref: TX Audio Simplified Schematic 45mVrms on on U0200, C0218, U0200-B8 R0224, R0233 ~ = Approximately TP5800 has SPI lines Check 1KHz ~114mVrms activity at U0200 all bands,...
Page 114: Troubleshooting Chart 1-5, Rx Audio
Troubleshooting Chart 1-5, RX Audio CHART 1-5 RX AUDIO START Inj: 1kHz Tone, 3kHz deviation at the appropriate RX frequency into the antenna connector. Volume set to ~7.5 Vrms ~800mVpp GOTO Band Specific on U0200-J7 IF Receiver Chart Ref: RX Audio Simplified Schematic ~ = Approximately ~375mVpp Check...
Page 115: Rx Audio Routing, Simplified Schematic For Chart 1-5
RX Audio Routing, Simpliﬁed Schematic for Chart 1-5 CONTROLLER BOARD RX AUDIO ROUTING SIMPLIFIED SCHEMATIC 25KHz 260mVrms 107mVrms 260mVrms 107mVrms 260mVrms 12.5KHz 800mVpp 324mVpp 800mVpp 324mVpp 800mVpp R0245 109mVrms C0236 C0202 348mVpp 330pF PL IN 0.22µF C0256 0.1µF ASFIC U0200 RX IN DISC FFOUT...
Page 116: Troubleshooting Chart 1-6, Signalling
Troubleshooting Chart 1-6, Signalling CHART 1-6 SIGNALLING START Radio mutes Check DATA ON if proper PL/DPL is U0104 U0200-A4 not present During TX Check is there a 1 or 2kHz U0200-01 signal at U0200-C3? Check for solder Check defects on U0103 U0200 9-10...
Page 117: Troubleshooting Chart 1-7, Dc Distribution
Troubleshooting Chart 1-7, DC Distribution CHART 1-7 DC DISTRIBUTION START Ref: Chart 1-3 and DC Voltage Distribution Simplified Schematic Check DC 13.6V on input and fuse connector J1 Check C5613, 13.6V on C5617, L5611, U0502-8 R0432, J5500-1, 2 Check 8V on U0502 U0502-1 GOTO...
Page 118: Radio Voltage, Simplified Schematic For Chart 1-7
Radio Voltage, Simpliﬁed Schematic For Chart 1-7 RADIO VOLTAGE SIMPLIFIED SCHEMATIC MAIN SHIELD CONTROLLER CONTROL TRANSMITTER HEAD CONT 9.3V U0501 Q0553 K 9.1V AUDIO Q0552 U0502 U0203 J0405-17 VOLT OPTIONS HEAR J0401 CLEAR J0408 U0250 U5802 K4 µP FRAC N U5801 ELEC ON/OFF SLIC IVA...
Page 119: Troubleshooting Chart 1-8A, Control Head Model I
Troubleshooting Chart 1-8A, Control Head Model I Numbers in brackets refer to accompanying troubleshooting procedure overleaf. Control Head Model C Troubleshooting Chart Check the following: SW B+ voltage in normal mode (5.1) START Multiplexer in normal position (5.2) PTT input (5.3) Monitor input (5.4) SW B+ and AUX input (5.5)
Page 120: Control Head I Troubleshooting Procedure
Control Head I Troubleshooting Procedure Power Supply Check that the radio is connected to a power supply. ON/OFF switch Check that radio turns on. I.e. SW B+ is 12V DC. If not, press the ON/OFF switch to turn the radio off again.
Page 121 Check that U0653 pin 52 is 5 VDC with pulses to ground while transmitting data. Then check U0655 (disconnect pin 1). If problem disappears and OPTION SW B+ circuit is OK (see 5.), replace U0655. If the OPTION SW B+ circuit is defect, D0684 should also be checked. SB9600 BUS-, J650 pin 4 This signal is normally 0 V with short pulses to 5 VDC when data are sent on the bus.
Page 122 Connect a 68 ohm resistor from P0651 pin 1 to ground. Check that the DC voltage on P0651 pin 1 is still approx. 12 VDC. If not check Q0662. Multiplexer in SB9600 position Connect a 5.6 kohm resistor from P0651 pin 1 to ground (a keypad microphone can be used instead). Check that the voltage on U0655/U0656 pin 10 is 0 VDC.
Page 123 10.2 One/some LEDs One LED is off. Check the LED. One row of LEDs is off. Find the LED that makes the short circuit. 11.1 Defect outside segments of display If the LCD has either light or dark areas outside the segment, the LCD glass is defect and must be replaced.
Page 124: Numbers In Brackets Refer To Accompanying Troubleshooting Procedure Overleaf
Troubleshooting Chart 1-8B, Control Head Models II & III Numbers in brackets refer to accompanying troubleshooting procedure overleaf START Volume Check R0696 (6) control OK? Radio Check on/off switch (1.1) can turn on/off? (1.1) Keypad Check electrical connection to µP. Clean PCB or replace keypad (7) 5VDC on TP3?
Page 125: Control Heads Ii And Iii Troubleshooting Procedure
Control Heads II and III Troubleshooting Procedure Power Supply Check that the radio is connected to a power supply. ON/OFF switch Check that radio turns on. I.e. SW B+ is 12V DC. If not, press the ON/OFF switch to turn off radio. If the radio does not turn on, verify that there is DC voltage on the MIC-HI/ON_OFF line and that this voltage goes to ground when pressing the ON/OFF switch.
Page 126 SB9600 BUS+, J650 pin 15 This signal is normally 5 VDC with short pulses to 0V when data are sent on the bus. If it is constantly 0 V or 5 VDC check D0665 (most common error), Q0663 and Q0662. Check that U0653 pin 52 is 5 VDC with pulses to ground while sending data.
Page 127 Monitor input Check that the voltage on U0653 pin 9 changes from 5 VDC to approx. 3.3 VDC when P0651 pin 3 is connected to ground. If this fails check U0658. AUX input Check that the voltage on U0653 pin 5 changes from 5 VDC to approx. 0 VDC when P0651 pin 7 is connected to ground.
Page 128 Check Q0657 (yellow), Q0658 (red) and Q0659 (green). Check LEDs. LCD backlight 10.1 All LEDs If backlight cannot be turned on or off. Check that U0654 pins 16 and 19 are 5 VDC. If not, check U0654. Check that the voltage of base on Q0666 is 5 VDC. Check that the DC voltage of U0656 pin 1 is approx.
Page 129 13.1 Secure keyloader sensing Connect P0651 pin 2 to ground. Check that DC voltage on U0653 pin 4 goes to 0 V. If not, check P0651, R0690, R0691 and C0667. 13.2 Multiplexer in keyload position Check that U0654 pin 5 goes to 5 VDC. If not check U0654. 13.3 Connections through multiplexer Check that P0651 pins 6, 3 and 7 are connected to J0650 pins 10, 12 and 11 respectively.
Page 130: Troubleshooting Chart 1-9, Clock Distribution
Troubleshooting Chart 1-9, Clock Distribution CHART 1-9 CLOCK DISTRIBUTION START Check 16.8MHz U5800, on U5801-14 C5754, R5750 Check 2.1MHz U5801, on U0200-E1 R5759, C5768 Check 3.68MHz, U0200, or 7MHz, or 14 MHz R0204, L0200, on U0200-D1 C0208, R0200 Frequency Check on U0200-D1 divided U0103 by 4 on...
Page 131: Troubleshooting Chart 1-10, Sb9600 Bus Rx
Troubleshooting Chart 1-10, SB9600 BUS RX CHART 1-10 SB9600 BUS RX START Perform the following while sending data. i.e. Control Head button press, Note: For SB 9600 operation the SCI RX, Channel Change, Radio OFF/ON. SCI TX, and Busy paths must all function. Voltages on Correct as required.
Page 132: Troubleshooting Chart 1-11, Sb9600 Bus Rx
Troubleshooting Chart 1-11, SB9600 BUS RX START Note: Verify Voltages per SB9600 Busy Simplified Schematic. Perform the following while sending data. i.e. Control Head button press, Channel Change, Radio OFF/ON. Busy Data Voltage OK per Check U0103-64? SB9600 Voltage U0104 Table Check Q0401, Check...
Page 133: Sb9600 Busy, Simplified Schematic For Charts 1-10 & 1-11
SB9600 BUSY, Simpliﬁed Schematic for Charts 1-10 & 1-11 SLIC R0424 (5V) (5V) BUSY_OUT Q0406 [0.06V] [4.25V] 4.7K U0104-G4 (0V) [4.9V] (0V) BUSY J0403-5 [4.9V] R0426 4.7K R0425 C0438 VR0421 4.7K (5V) 470pf BUSY_IN [0V] U0103-76 (0V) Q0407 [1.5V] R0427 C0439 ( V ) - Voltages when radio is in STEADY STATE 470pf...
Page 134: Troubleshooting Chart 1-12, Gpio
Troubleshooting Chart 1-12, GPIO CHART 1-12 GPIO START Note: Verify RSS programming for the GPIO function to be correct. Input GPIO Output Function? J0403-7,8,16, J0403-7,8,16, Check cable Check cable 20, 21 at the right 20, 21 at the right used to interface used to interface voltage voltage...
Page 135: Troubleshooting Chart 1-13 (1 Of 2), Power Control
Troubleshooting Chart 1-13 (1 of 2), Power Control START Set to See Band Specific Using RSS, check Is it set to High Power personality for the TX Troubleshooting Low Power? and retest channel of interest Chart for proper setup Using RSS, set current limit values to zero and program into radio (F8).
Page 136: Troubleshooting Chart 1-13 (2 Of 2), Power Control
Troubleshooting Chart 1-13 (2 of 2), Power Control CHART 1-13 POWER CONTROL 2of2 Q0554, R0563, Repair or PA_CNTL (TP0400) R0573, C0566, R0564, <max band specific replace defective R0554, R0553, R0577, values in component and R0581 Table 3? From Sheet 1 Check R0587, R0550, GOTO Band Specific C0551, R0551, U0550,...
Page 137: Diagrams And Parts Lists
Diagrams and Parts Lists Notes on Sheet Port Connections, Circuit Block Port Connections and Physical Connectors ..10-2 Notes on Sheet Port Connections, Circuit Block Port Connections and Physical Connectors ..10-2 Example of Transceiver Board Block Connection Diagram (110 Watt Radio) .
Page 138: Schematic Diagram Hierarchy
Schematic Hierarchy Many of the MCS 2000 schematics are created in a hierarchical fashion. This is similar to a computer directory/ subdirectory format. Like in a computer where there can be a mix of ﬁles and subdirectories under a given directory, some schematic sheets in the manual contain blocks or components, or both, in various sheets.
Page 139: Example Of Transceiver Board Block Connection Diagram (110 Watt Radio)
VSUM VFWD BUF SPK - SPK + CL UNSW 5V UNSW 5V Vaud AUDIO AND POWER PWR RST CONTROLLER REGULATION SWB+ COMMON SECTION B+ ON/OFF (LOGIC) (REFER TO VOLUME I) CLEAR AUPA EN SECTION B+ IGNITION (REFER TO RX AUDIO VOLUME I) GNDD Block...
Page 140 Exploded View Parts List, Low Power ITEM MOTOROLA PART NO. DESCRIPTION 3205931V01 Gasket, Front Cover 1505908V02 Top Cover 3205934V01 Gasket, Top Cover 2605652W02 Pressure Plate 5584300B04 Handle, 800 MHz only 2604802K01 PA Shield, 800 MHz only 4205938V01 Clip Spring, 2 pcs.
Page 141: Mid Power Radios Exploded View Diagram And Parts List
Exploded View Parts List, Mid Power ITEM MOTOROLA PART NO. DESCRIPTION 3205931V02 Gasket, Front Cover 1505764X01 Top Cover Assembly 3205082E97 Gasket, Top Cover 5584300B04 Handle 2605625X03 PA Shield 4205938V01 Clip Spring, 2 pcs. 0905902V04 Power Connector 3205457Z04 Gasket, Power Connector...
Page 142 Exploded View Parts List, High Power ITEM MOTOROLA PART NO. DESCRIPTION 2705815W02 Chassis, High Power 3305179X01 Name Plate 4205938V01 Clip, Spring 0905902V04 Power Connector 3205457Z04 Gasket, Power Connector 0905901V08 RF Connector 3205457Z03 Gasket, RF Connector HUD4021 PA Board, VHF R1...
Page 143 MEPC-95406-A/None Exploded View Parts List, Control Head Model I ITEM MOTOROLA PART NO. DESCRIPTION 0702103U01 Frame Lock 0180757T74 Front End 7502101U05 Keypad, Elastomeric 2802102U01 Connector, Elastomeric 0702103U01 Frame, LCD 9102100U01 Colour Sheet, LCD 1502102U03 Housing, Control Head Model I 3605893W02...
Page 144 LCD: see detail below Exploded View, Control Head Model II MEPC-95407-A/None ITEM MOTOROLA PART NO. DESCRIPTION 1502455Y04 Housing, Back LCD Detail 3202462Y03 Gasket, Housing 4602100U01 PCB Retainer HCN4058 PCB Assembly 6102082U04 Light Guide 7502565Y04 Keypad, std. with Text 7505241Z03 Keypad, for use with Replaceable...
Page 145 LCD: see detail below MEPC-95408-A/None Exploded View Parts List, Control Head Model III ITEM MOTOROLA PART NO. DESCRIPTION 1502455Y04 Housing, Back LCD Detail 3202462Y03 Gasket, Housing 4602100U01 PCB Retainer HCN4059 PCB Assembly 6102082U04 Light Guide 7502566Y04 Keypad 7505242Z03 Keypad, use with Replaceable...
Page 146 For optimum performance, order replacement diodes, tran- D0683 D0673 4805729G75 LED GREEN R0676 0662057B47 Q0658 C0673 sistors, and circuit modules by Motorola part number only. R0705 D0674 4813830A15 DIODE 5.6V • When ordering crystals, specify carrier frequency, crys- R0677 0662057A89...
Page 147: Control Head Model I Schematic Diagram
DEPC-95368-A/None Control Head Model I Schematic Diagram 10-11...

Motorola MCS 2000 Service Instructions Manual

1 Introduction

2 Basic Maintenance

3 Test Equipment, Service Aids, and Tools

4 Test Mode and Error Codes

5 Disassembly & Reassembly and Replacement Procedures

6 Radio Tuning Procedure

7 Controller Section Theory of Operation

8 Control Heads

9 Troubleshooting

10 Diagrams and Parts Lists

Quick Links

Troubleshooting

Related Manuals for Motorola MCS 2000

Summary of Contents for Motorola MCS 2000

Table of Contents