Motorola Gp68 Part1 6881086c09 O Manual
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viii 6881086C09-OMarch, 1997 ForewordGP68 Portable Radios Service Manual Model Chart Model Chart Description 20-channels, 1-4W, 12.5 kHz (keypad) 20-channels, 1-4W, 20/25 kHz (keypad) Model P94VNB00H2AA P94VNB20H2AA ItemDescription XPMLE4023GP68 UHF RF Board, 20/25 khz XPMLE4024GP68 UHF RF Board, 12.5 khz XXPMCE4000GP68 Controller Board XXPMLN4061GP68 Display Board XXNAE6483AUHF Whip Antenna (430-470 MHz) XX6881086C10GP68 User Manual XXPMLN4049Front Cover (keypad) GP68 UHF 430 - 470 MHz X = Indicates one of each required
March, 19976881086C09-O ix GP68 Portable Radios Service ManualForeword Accessories (Note: Not all accessories are available in all areas.) Accessories (Note: Not all accessories are available in all areas.) Antennas: PMAD4012136-155 MHz VHF 9cm Antenna (Red) PMAD4013155-174 MHz VHF 9cm Antenna (Black) PMAD4014136-155 MHz VHF 14cm Antenna (Red) PMAD4015155-174 MHz VHF 14cm Antenna (Black) PMAE4003430-470 MHz UHF 9cm Antenna (White) NAE6483_R403-520 MHz UHF 17cm Whip Antenna Carrying Accessories: HLN8240_RReplacement 2-1/2” Belt Clip HLN8255Spring Action Belt Clip 3” HLN9985Waterproof Bag Battery Chargers: HTN9013110V - 3 Hour Desktop Battery Charger HTN9014110V - 10 Hour Desktop Battery Charger HTN8232110V - 10 Hour Wall Charging Adapter HTN9015220V - 3 Hour Desktop Battery Charger with Euro Plug HTN9016220V - 10 Hour Desktop Battery Charger with Euro Plug HTN9002220V - 10 Hour Wall Charging Adapter with Euro Plug PMLN4069Charger Insert Batteries: PMNN4000NiCd Rechargeable High Capacity Battery Pack PMNN4001NiCd Rechargeable Medium Capacity Battery Pack Audio/Signalling Accessories: HMN9787_RLight Weight Headset with Swivel Boom Microphone (without VOX) BDN6647Medium Weight Headset with Swivel Boom Microphone (without VOX) BDN6706Ear Microphone with VOX interface (VOX included) HMN9725_RRemote Speaker Microphone HMN9036Earbud with Clip Microphone and PTT HLN9132Earbud HLN9133VOX Adapter Kit Retrofit Kits: HLN9087External Antenna Adapter (BNC Connector) PMLN4064DTMF Decode Signalling Retrofit Kit (Pack of ten of PMLN4063) PMLN4067SmarTrunk II Retrofit Kit (Pack of ten of PMLN4066) Manuals/Videos: 6881086C08GP68 Radio Service Software Manual (English) 6881086C09GP68 Service Manual (Spanish/Portuguese) 6881086C10GP68 User Manual (Spanish/Portuguese) 6804370J40GP68 User Manual (English/Chinese) 6804370J41GP60 Series Service Manual (English) Others: PMLN4068Radio to Radio Cloning Cable PMLN4074Programming Cable RVN4159GP68 Radio Service Software Prices And Availability Subject To Change Without Notice
x 6881086C09-OMarch, 1997 ForewordGP68 Portable Radios Service Manual Performance Specifications for the GP68 Radio Performance Specifications for the GP68 Radio GENERAL TRANSMITTER *Second Harmonics: VHF: -50dB; UHF: -50dB RECEIVER ** f c ± 910kHz: VHF: -60dB; UHF: -55dB VHFUHF Frequency:136-174 MHz430-470 MHz Channel Capacity:20 Channels Power Supply:7.5 Volt +/- 20% Dimensions with Medium Capacity NiCd Battery: with High Capacity NiCd 130mm x 57mmx29.5mm Weight: with Medium Capacity NiCd Battery: with High Capacity NiCd Battery: 404 g 454 g Average Battery Life @ (5-5-90 Duty Cycle) Medium Capacity NiCd Bat- tery: High Capacity NiCd Battery: Low Power 5 Hrs. 11 Hrs High Power 3 Hrs. 7 Hrs Low Power 5 Hrs . 11 Hrs High Power 3 Hrs. 7 Hrs Water Seal:Passes rain testing per IP54 Shock & Vibration:Impact resistance polycarbonate housing passes TIA RS-603 VHFUHF RF Output NiCd @ 7.5V: Low 1W High 5W Low 1W High 4W Frequency:136-174 MHz430-470 MHz Channel spacing25 kHz12.5kHz25 kHz12.5kHz Freq. Stability (-30˚C to +60˚):.0005%.0005%.00025% Spurs/Harmonics:* Second Harmonic:-60 dB -50dB-60 dB -50dB Audio Response: (from 6 dB/oct. Pre-Emphasis, 300 to 3000Hz:+1, -3 dB+1, -3 dB Audio Distortion: @ 1000 Hz, 60% Rated Max. Dev.
March, 19976881086C09-O xi GP68 Portable Radios Service ManualForeword Service Aids Service Aids The following table lists service aids recommended for working on the GP60 Series Radios. Test Equipment The following table lists test equipment required to service the GP60 Series Radios and other two-way radios. Motorola Part No.DescriptionApplication RTX4005Portable Test BoxEnables connection to the audio / accessory jack. Allows switching for radio testing. RKN4034Test Box cableConnects radio to Test Box. RVN4159Radio Service SoftwareSoftware on 3.5” floppy diskette and manual PMLN4074Programming CableConnects radio to RIB. PMLN4068Radio to Radio Cloning CableAllows a radio to be duplicated from a master radio by transferring programmed data from the master radio to the other. RLN4008Radio Interface Box(RIB)Enables communications between the radio and the computer’s serial communications adapter. HSN9412RIB Power SupplyUsed to supply power to the RIB. HKN9216Computer Interface CableConnects the computer’s serial communications adapter to the RIB. HLN9390AT to XT Computer AdapterAllows HKN9216 to plug into a XT style communications port. HLN9087External Antenna Adapter Con- verts RF port to BNCPower and sensitivity measurement 01-80304E45Battery EliminatorAllows use of Power Supply 81-80377E77Housing EliminatorAllows component level analysis Motorola Model No. Description Characteristics Application R2200, R2400, or R2001 with trunking optionService MonitorThis monitor will substitute for items with an asterisk *Frequency/deviation meter and signal genera- tor for wide-range troubleshooting and align- ment *R1049Digital MultimeterTwo meters recommended for ac/dc voltage and current measurements *S1100Audio Oscillator67 to 200 Hz tonesUsed with service monitor for injection of PL tones *S1053, *SKN6009, *SKN6001AC Voltmeter, Power Ca- ble for meter, Test leads for meter1mV to 300V, 10-Megohm in- put impedanceAudio voltage measurements R1053Dual-trace Oscilloscope20 MHz bandwidth, 5mV/cm - 20V/cmWaveform measurements *S1350, *ST1215 (VHF) *ST1223 (UHF) *T1013Wattmeter, Plug-in Ele- ments (Vhf & Uhf), RF Dummy Load50-ohm, + 5% accuracy 10 Watts, maximum 0-1000 Mhz, 300WTransmitter power output measurements S1339RF Millivolt Meter100uV to 3V RF, 10 kHz to 1.2 GHzRF level measurements *R1013SINAD MeterReceiver sensitivity S1347 or S1348 (prog)DC Power Supply0-20 Vdc, 0-5 AmpsBench supply for 12.5Vdc
March, 1997 6881086C09-O 1-1 Section 1 Radio Disassembly/Assembly Overview This section explains, step by step, how to disassemble and reassemble the GP60 Series portable radio. Disassemble Radio Remove Battery The battery latches are located at the sides of the radio. 1. Slide latches away from the front panel on both sides of the radio to unlock battery com- partment (Figure 1-1). 2. Slide battery cover down and away from radio to remove (Figure 1-2). Remove Radio’s Chassis 1. Remove antenna and both control knobs. The control knobs pull off and the antenna screws off counterclockwise (Figure 1-3). 2. Remove the two screws at the back of the chassis (Figure 1-3).3. Slide the chassis downwards a little and lift it away from the front housing (Figure 1-3). NOTE Please note that the flat ribbon cable still connects the controller board and the RF board. Be careful not to strain this cable while separating the chassis from the front housing. 4. Unlatch the latch lever of the connector on the RF board and disconnect the flat ribbon cable. Remove RF Board 1. Remove the five screws which hold the RF board to the chassis with a TORX® head screwdriver (Figure 1-4). 2. Gently remove the RF board from the chassis (Figure 1-4). Figure 1-1 Slide Battery Latch # VHF Figure 1-2 Slide Battery Cover # VHF
Radio Disassembly/AssemblyGP68 Portable Radios Service Manual Disassemble Radio 1-2 6881086C09-OMarch, 1997 Remove Controller Board 1.Remove the PTT lever by slipping a small screw driver between it and the Monitor Button and pry it out (Figure 1-5). 2.Remove the two dust covers, that cover the accessories and cloning connectors, at the side of the radio. 3.Unlatch the latch levers on the controller board, and remove the ribbon cable as well as the flex tail from the connectors (Figure 1-6).4.Use a TORX ® head screwdriver to remove the screw (Figure 1-6). 5.Gently lift the bottom of the controller board to disconnect it from the display board (Figure 1-6). 6.Ease the controller board downwards and lift it away from the housing. Figure 1-3Remove Radio Chassis Figure 1-4Remove RF Board Figure 1-5Removing the PTT lever Figure 1-6Remove Controller Board UHF #
March, 19976881086C09-O 1-3 GP68 Portable Radios Service ManualRadio Disassembly/Assembly Reassemble Radio Remove Display Board 1.Once the controller board is removed, the whole display board will be visible. 2.Turn the housing so that the front panel but- tons faces upwards (Figure 1-7). 3.Gently tap the housing to dislodge the display board (Figure 1-7). Reassemble Radio Replace Controller Board and Display Board 1.Hold the display board in such a manner that the connector is situated at the top right-hand corner (Figure 1-8). 2.Align the connectors of the controller board and the display board and press firmly to con- nect the two boards (Figure 1-8). 3.Carefully slide the boards into the housing at a 45 degree angle. Care should be taken as the volume and channel shafts are inserted into the openings of control top (Figure 1-8). 4.Fasten the Controller board to the housing with the TORX ® head screw (Figure 1-8). 5.Insert the tail from the speaker flex into the connector and lock the latch on the connector (Figure 1-8). 6.Snap on the PTT lever. 7.Replace the dust covers covering the acces- sories and cloning connectors. Replace Radio’s Chassis 1.Place the RF board on the chassis and tighten the five screws (Figure 1-9). 2.Connect the RF board and the controller board with the flat ribbon cable (Figure 1-9). 3.Place chassis gently into the housing (Figure 1-9). 4.Slide the chassis upwards to properly fit into the housing and press the bottom of the chas- sis firmly into place (Figure 1-9). Figure 1-7Remove Display Board 12 3 4 5 6 7 8 9 * 0 # MEM SQLLOWSCAN SIGN-DELAB CD Figure 1-8Replace Controller Board and Display Board
Radio Disassembly/AssemblyGP68 Portable Radios Service Manual Reassemble Radio 1-4 6881086C09-OMarch, 1997 NOTE Be careful to loop the flex ribbon cable properly when assembling the chassis onto the housing. Replace Battery, Knobs, and Antenna 1.Replace battery pack by sliding the pack in place. 2.Slide battery cover latches towards the front panel to lock. 3.Replace both control knobs and antenna. Figure 1-9Replace Radio’s Chassis
March, 19976881086C09-O 1-5 GP68 Portable Radios Service ManualRadio Disassembly/Assembly Torque Specifications Chart Torque Specifications Chart * Refer to G68 Exploded Mechanical View on page 17 for locations of screws. PART NUM- BERDESCRIPTIONSIZETORQUE (IN./LB.)EXP. VIEW NUMBER* 0304726J01Screw, Torx T-6M2 X 0.4 X 5 mm2.0 (to housing, front) 2.5 (to chassis)24 0304725J02Screw, Machine Metric, Flat Head 90 Deg.M2 X 0.4 X 4 mm2.533 0304726J01Screw, Self-TappingM2 X 0.4 X 4 mm2.534
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