Motorola Bpr40 Magone Detailled 6816102h01 A Manual
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vii Operational Cautions Intrinsically Safe Radio Information The Intrinsically safe approval unit refers to a product that has been approved as intrinsically safe by an approval agency (for example FM Approvals, CSA, UL, or Cenelec) and certifies that a particular product meets the Agencys applicable intrinsic safety standards for specific types of hazardous classified locations. A portable radio that has been approved for intrinsic safety will have Approval label attached to the radio to identify the unit as being Approved for specified hazardous atmospheres. This label specifies the hazardous Class/Division/Group along with the part number of the battery that must be used. The intrinsically safe approval label will be located on the portable radio unit. Operational Cautions for Intrinsic Safe Equipment Warnings for Radios Approved as Intrinsically Safe Radios must ship from the Motorola manufacturing facility with the hazardous atmosphere capability and the intrinsic safety approval labelling (FM, UL, CSA, CENELEC). Radios will not be upgraded to this capability and labeled once they have been shipped to the field. Antennas Do not use any portable radio that has a damaged antenna. If a damaged antenna comes into contact with your skin, a minor burn can result. Batteries All batteries can cause property damage and/or bodily injury, such as burns, if a conductive material such as jewelry, keys, or beaded chains touches exposed terminals. The conductive material may complete an electrical circuit (short circuit) and become quite hot. Exercise care in handling any charged battery, particularly when placing it inside a pocket, purse, or other container with metal objects. • Do not operate radio communications equipment in a hazardous atmosphere unless it is a type especially qualified (for example, FM, UL, CSA, or CENELEC approved). An explosion or fire may result. • Do not operate a radio unit that has been approved as intrinsically safe product in a hazardous atmosphere if it has been physically damaged (for example, cracked housing). An explosion or fire may result. • Do not replace or charge batteries in a hazardous atmosphere. Contact sparking may occur while installing or removing batteries and cause an explosion or fire.
viii A modification changes the units hardware from its original design configuration. Modifications can only be made by the original product manufacturer. Repair A repair constitutes something done internally to the unit that would bring it back to its original condition. Items not considered as repairs are those in which an action is performed on a unit which does not require the outer casing of the unit to be opened in a manner that exposes the internal electrical circuits of the unit. Do Not Substitute Options or Accessories The Motorola communications equipment certified as intrinsically safe by the approving agency, (FM, UL, CSA, CENELEC) is tested as a complete system which consists of the listed agency Approved portable, Approved battery, and Approved accessories or options, or both. This Approved portable and battery combination must be strictly observed. There must be no substitution of items, even if the substitute has been previously Approved with a different Motorola communications equipment unit. Approved configurations are listed by the Approving Agency (FM, UL, CSA, CENELEC). The intrinsically safe Approval label affixed to radio refers to the intrinsically safe classification of that radio product, and the approved batteries that can be used with that system. The manual PN referenced on the intrinsically safe approval label identifies the approved Accessories and or options that can be used with that portable radio unit. Using a non Motorola intrinsically safe battery and or accessory with the Motorola approved radio unit will void the intrinsically safe approval of that radio unit. • Do not replace or change accessories in a hazardous atmosphere. Contact sparking may occur while installing or removing accessories and cause an explosion or fire. • Turn the radio off before removing or installing a battery or accessory. • Do not disassemble an intrinsically safe product in any way that exposes the internal circuits of the unit. • Failure to use an intrinsically safe approved battery or Approved accessories specifically approved for the radio unit may result in the dangerously unsafe condition of an unapproved radio combination being used in a hazardous location. • Unauthorized or incorrect modification of the intrinsically safe approved Product will negate the approval rating of the product. • Incorrect repair or relabeling of any intrinsically safe Agency approved radio could adversely affect the Approval rating of the unit. • Use of a radio that is not intrinsically safe in a hazardous atmosphere could result in serious injury or death. REPAIRS FOR MOTOROLA PRODUCTS WITH INTRINSICALLY SAFE APPROVAL ARE THE RESPONSIBILITY OF THE USER. • Repairs to a Motorola FM approved radio product should only be done at a location that has been FM audited under the FM 3605 repairs and service standard. • Contact Motorola for assistance regarding repairs and service of Motorola intrinsically safe equipment.
Table of Contents Document History.............................................................................................. i Safety Information ........................................................................................... iii Section 1 INTRODUCTION 1.0 Scope of Manual ....................................................................................................1-1 2.0 Warranty and Service Support...............................................................................1-1 2.1 Warranty Period and Return Instructions ........................................................1-1 2.2 After Warranty Period ......................................................................................1-2 2.3 Piece Parts ......................................................................................................1-2 2.4 Technical Support ...........................................................................................1-2 2.5 Further Assistance From Motorola ..................................................................1-2 3.0 Radio Model Information........................................................................................1-3 4.0 Radio Features ......................................................................................................1-4 Section 2 THEORY OF OPERATION 1.0 Overview ................................................................................................................2-1 1.1 Purpose ...........................................................................................................2-1 1.2 General Description.........................................................................................2-1 2.0 Receiver System....................................................................................................2-1 2.1 Front-End ........................................................................................................2-1 2.2 First Mixer........................................................................................................2-2 2.3 IF Amplifier ......................................................................................................2-2 2.4 Squelch ...........................................................................................................2-2 3.0 Transmitter System and PLL Synthesizer .............................................................2-3 3.1 TX Power Stage ..............................................................................................2-3 3.2 Antenna Switch ...............................................................................................2-3 3.3 Low Pass Filter ................................................................................................2-3 3.4 Auto-Power Control .........................................................................................2-4 3.5 PLL Synthesizer ..............................................................................................2-4 4.0 Audio and Control Circuit .......................................................................................2-5 4.1 RX Audio .........................................................................................................2-5 4.2 RX Sub-Audible Decode Circuit......................................................................2-6 4.3 TX Audio..........................................................................................................2-6 4.4 TX Sub-Audible Encode Circuit .......................................................................2-6 4.5 Microprocessor ................................................................................................2-6
Section 3 VHF BAND 1 (136–150 MHz) INFORMATION 1.0 RF Circuit Board and Schematic Diagram for VHF Band 1 (136–150 MHz) .........3-2 VHF Band 1 (136–150 MHz) Main Board Top Side ...............................................3-2 VHF Band 1 (136–150 MHz) Main Board Bottom Side .........................................3-3 VHF Band 1 (136–150 MHz) Schematic Diagram .................................................3-4 Section 4 VHF BAND 2 (150–174 MHz) INFORMATION (150–174 MHz) 1.0 RF Circuit Board and Schematic Diagram for VHF Band 2 (150–174 MHz) .........4-2 VHF Band 2 (150–174 MHz) Main Board Top Side ...............................................4-2 VHF Band 2 (150–174 MHz) Main Board Bottom Side .........................................4-3 VHF Band 2 (150–174MHz) Schematic Diagram ..................................................4-4 Section 5 UHF BAND 1 (403–425 MHz) Information 1.0 RF Circuit Board and Schematic Diagram for UHF Band 1 (403–425 MHz) ........5-2 UHF Band 1 (403–425 MHz) Main Board Top Side ..............................................5-2 UHF Band 1 (403–425 MHz) Main Board Bottom Side .........................................5-3 UHF Band 1 (403–425 MHz) Schematic Diagram .................................................5-4 Section 6 UHF Band 2 (450–470 MHz) Information 1.0 RF Circuit Board and Schematic Diagram for UHF Band 2 (450–470 MHz) .........6-2 UHF Band 2 (450–470 MHz) Main Board Top Side ..............................................6-2 UHF Band 2 (450–470 MHz) Main Board Bottom Side .........................................6-3 UHF Band 2 (450–470 MHz) Schematic Diagram .................................................6-4 Section 7 UHF Band 4 (490–512 MHz) Information 1.0 RF Circuit Board and Schematic Diagram for UHF Band 4 (490–512 MHz) .........7-2 UHF Band 4 (490–512 MHz) Main Board Top Side ..............................................7-2 UHF Band 4 (490–512 MHz) Main Board Bottom Side .........................................7-3 UHF Band 4 (490–512 MHz) Schematic Diagram .................................................7-4
Scope of Manual1-1 Section 1 INTRODUCTION 1.0 Scope of Manual This manual is intended for use by service technicians familiar with similar types of equipment. It contains service information required for the equipment described and is current as of the printing date. Changes which occur after the printing date may be incorporated by a complete Manual revision or alternatively as additions. 2.0 Warranty and Service Support Motorola offers long term support for its products. This support includes full exchange and/or repair of the product during the warranty period, and service/ repair or spare parts support out of warranty. Any return for exchange or return for repair by an authorized Motorola Dealer must be accompanied by a Warranty Claim Form. Warranty Claim Forms are obtained by contacting an Authorized Motorola Dealer. 2.1 Warranty Period and Return Instructions The terms and conditions of warranty are defined fully in the Motorola Dealer or Distributor or Reseller contract. These conditions may change from time to time and the following notes are for guidance purposes only. 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 not been subjected to damage outside the terms of the warranty. Prior to shipping any radio back to the appropriate Motorola warranty depot, please contact Customer Resources (Please see page 1-2). All returns must be accompanied by a Warranty Claim Form, available from your Customer Services representative. Products should be shipped back in the original packaging, or correctly packaged to ensure no damage occurs in transit. NOTEBefore operating or testing these units, please read the Safety Information Section in the front of this manual. NOTEFor service technicians in the Latin America Countries Region For any warranty claims in the Latin America Countries region, please open a case using the Contact Us feature within Motorola Online at https://businessonline.motorola.com/ .
1-2Warranty and Service Support 2.2 After Warranty Period After the Warranty period, Motorola continues to support its products in two ways. 1. Motorolas Managed Technical Services (MTS) offers a repair service to both end users and dealers at competitive prices. 2. MTS supplies individual parts and modules that can be purchased by dealers who are techni- cally capable of performing fault analysis and repair. 2.3 Piece Parts Some replacement parts, spare parts, and/or product information can be ordered directly. If a complete Motorola part number is assigned to the part, it is available from Motorola’s Managed Technical Services (MTS). If no part number is assigned, the part is not normally available from Motorola. If the part number is appended with an asterisk, the part is serviceable by Motorola Depot only. If a parts list is not included, this generally means that no user-serviceable parts are available for that kit or assembly. All orders for parts/information should include the complete Motorola identification number. All part orders should be directed to your local MTS office. Please refer to your latest price pages. 2.4 Technical Support Technical support is available to assist the dealer/distributor in resolving any malfunction which may be encountered. Initial contact should be by telephone wherever possible. When contacting Motorola Technical Support, be prepared to provide the product model number and the unit’s serial number. 2.5 Further Assistance From Motorola You can also contact the Customer Help Desk through the following web address: http://www.motorola.com/governmentandenterprise/contactus NOTEFor service technicians in the Latin America Countries Region After Warranty Period claims in the Latin America Countries region are handled through the Motorola Authorized Service Provider (SAM) Network. To find the nearest SAM, please go to Motorola Resource Center in Motorola Online at https://businessonline.motorola.com/ . NOTEFor service technicians in the Latin America Countries Region All part orders should be directed to your local Parts Distributors. NOTEFor service technicians in the Latin America Countries Region For Technical Support in the Latin America Countries Region, please open a case using the Contact Us feature within Motorola Online at https://businessonline.motorola.com/ . NOTEOnly Motorola Service Centers or Approved Motorola Service Dealers can perform these functions. Any tampering by non-authorized Motorola Service Centers voids the warranty of your radio. To find out more about Motorola and its approved Service Centers, please visit http://www.motorola.com/governmentandenterprise/public/functions/home/home.aspx
Radio Model Information1-3 3.0 Radio Model Information 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. The example below shows one portable radio model number and its specific characteristics. Table 1-1 Radio Model Number (Example: AZH84KDC8AA3) Ty pe of UnitModel SeriesFreq. BandPower LevelPhysical PackagesChannel SpacingProtocolFeature Level AZH84J (136–150 MHz)D 5WC 16-Channel Black8 12.5/25KAA Conventional3 A8 LA K (150–174 MHz)C 4W4 A8 (LA) Q (403–425 MHz) R (450–470 MHz) T (490–512 MHz) AZ = Asia Regional PrefixH = Portable LA = Latin America Regional Prefix
1-4Radio Features 4.0 Radio Features The following are features your radio has. Normal Operation •Rx/Tx •Radio-CPS-Radio Cloning •Radio-to-Radio Cloning •Factory Reset •Low Battery Indication •Self Test Programming Button •Hi/Lo Power •Vo l u m e S e t •Monitor •Sticky Monitor •Scan Activate •Nuisance Channel Delete •Repeater/Talkaround •PL/DPL •Button Lock •Battery Save Mode •Squelch •Unassigned CPS •Rx Frequency •Tx Frequency •RX TPL/DPL/IDPL •TX TPL/DPL/IDPL •User Defined PL (TPL1, TPL2, TPL3) •Squelch Type •Unmute/Mute Rules •Power Level (High/Low) •TPL Reverse Burst •Turn Off Code •Rx Only •Busy Channel Lock Out (BCLO) •Channel Spacing (25KHz / 12.5KHz) •Talkaround •Time Out TImer •Battery Save Mode •Quick Key Override •Password Protection •Scan List •Normal Scan •Priority Scan •Talkback Scan
Overview2-1 Section 2 THEORY OF OPERATION 1.0 Overview 1.1 Purpose This section defines the theory of operation (or the Circuit Description) for the radio. At the same time, it provides a description of the circuit theory and analysis of the radio hardware design. 1.2 General Description The radio comprises of one main PCB. This main PCB contains the RF and digital circuits. The VHF/ UHF compliant handheld transceivers consists of a receiver, a transmitter, a phase-locked loop (PLL) frequency synthesizer, control circuits and power supply circuits. 2.0 Receiver System The receiver is a double conversion super heterodyne with first IF frequency at 45.1MHz and second IF frequency at 455kHz. 2.1 Front-End The front-end consists of a low pass filter, pre-selector filter, RF Amplifier, and a post-selector filter. The receive signal from the antenna is applied to TX LPF (L409, L410, C426, C427, C428, C429, C430) and then routed to an RF amplifier (Q301) after passing transmit / receive switch (CR401, CR301, CR302) and the pre-selector. The signal from the pre-selector is amplified around 13dB at LPF AN T- S W VCO PRESLECTOR FILTER Q301 LNAPOST SELECTOR FILTER1ST MIXQ302MCF 45.1MHz IF AMP Q303 CR301,2 F.T.V. IF,MIX U201 CF1,2 N/S SW X-TAL 44.645MHz DESCRIMI NATOR 455C24 Recovered AUDIO Inj FILTER
2-2Receiver System RF AMP(Q301) before being filtered again by the post-selector before being applied to the mixer. The pre-selector and post-selector are band-shift type filters to remove unwanted signals. 2.2 First Mixer The signal from receiver front-end is channelled into the Mixer (Q302) base to be heterodyned with the first local signal generated from the VCO to become the first IF frequency (45.1MHz). This first IF frequency is resonated at tank circuit C328, L308 (VHF) or L306 (UHF) and then channeled into the pair of crystal filters. 2.3 IF Amplifier The first IF signal is amplified to approximately 15dB by the IF amp Q303 and channeled into IF IC (U201) to be mixed with the second local frequency (44.645MHz). The first IF frequency (45.1MHz) and the second local frequency (44.645MHz) are mixed in U201, to produce the second IF frequency (455KHz). The second IF frequency passes through ceramic filters (CF1, CF2) to eliminate undesired signals and demodulated by demodulator in U201. The 455Khz ceramic filter consist of a wide (CF1) and a narrow (CF2) filter. The filtering is changed to wide and narrow band by the switch (SW). 2.4 Squelch U201 has a filter that filters noise and has an internal amplifier that amplifies the noise to make it a DC voltage in order to control the squelch system. So, if the noise level is under a threshold, the microprocessor (U101) in the radio detects the DC level and un-mutes the radio. If the noise level is over a threshold, the microprocessor mutes the radio.