Motorola Gm Series Detailed 6864115b62 A Manual
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2-4MAINTENANCE
Shields
Removing and replacing shields will be done with the R1070 station with the temperature control
set to approximately 215°C (415°F) [230°C (445°F) maximum].
n nTo remove the shield:
1.Place the circuit board in the R1070 circuit board holder.
2.Select the proper heat focus head and attach it to the heater chimney.
3.Add solder paste flux 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...](http://img.usermanuals.tech/thumb/52/48774/w64_gm-series-detailed-service-manual-6864115b62-a-19.png "Page 20
2-4MAINTENANCE
Shields
Removing and replacing shields will be done with the R1070 station with the temperature control
set to approximately 215°C (415°F) [230°C (445°F) maximum].
n nTo remove the shield:
1.Place the circuit board in the R1070 circuit board holder.
2.Select the proper heat focus head and attach it to the heater chimney.
3.Add solder paste flux 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...")
Notes For All Schematics and Circuit Boards2-5 5.0 Notes For All Schematics and Circuit Boards * Component is frequency sensitive. Refer to the Electrical Parts List for value and usage. 1.Unless otherwise stated, resistances are in Ohms (k = 1000), and capacitances are in picofarads (pF) or microfarads (µF). 2.DC voltages are measured from point indicated to chassis ground using a Motorola DC multimeter or equivalent. Transmitter measurements should be made with a 1.2 µH choke in series with the voltage probe to prevent circuit loading. 3.Interconnect Tie Point Legend: 16_8MHz 16.8MHz Reference Frequency 3V3 Regulated 3.3V Supply Voltage for Voice Storage 5V Regulated 5V Supply Voltage for RF Circuitry 5V Regulated 5V Supply Voltage (Control Head) 5V RF Regulated 5V Supply Voltage for RF Circuitry 5V SOURCE 5V Signal to Switch On Control Head 5VD Regulated 5V Supply Voltage for Digital Circuitry 9V3 Regulated 9.3V Supply Voltage 9V3FLT Filtered 9.3V Supply Voltage A+ 13.2V Supply Voltage ADDR *P Address Lines AN Analog Lines to Analog to Digital Converter ANALOG INPUT 2 External Keypad Matrix Column Signal ANALOG INPUT 3 External Keypad Matrix Row Signal BATTERY VOLTAGE Battery Voltage Sense Line BL A GREEN Back Light Anode Green BL A RED Back Light Anode Red BL GREEN Green Back Light Control BL K GREEN Back Light Cathode Green BL K RED Back Light Cathode Red BL KP Green Green Keypad Back Light Control BL KP RED Red Keypad Back Light Control BL LCD GREEN Green Display Back Light Control BL LCD RED Red Display Back Light Control BL RED Red Back Light Control BOOT CNTRL Bootstrap Mode Enable Signal BOOT MODE Boot Mode Select BOOT PWR ON Control Head Switch On Signal BOOT SCI RX Serial Communication Interface Receive Line BOOT SCI TX Serial Communication Interface Transmit Line BOOT VPP Boot Mode Select BUS+ Bi-directional Serial Communication Line BWSELECT Signal to select between the Ceramic Filter Pairs
2-6MAINTENANCE CH ACT Channel Activity Indicator Signal (Fast Squelch) CH KP ID Control Head Keypad ID (Data) Lines CH REQUEST Control Head Request from Control Head *P CLK Clock Signal CNTLVLTG PA Power Control Voltage CNTR AUDIO Audio Lines of the Controller COL x Keypad Matrix Column x CSX Chip Select Line PCIC / FRACN DATA Data Signal DC POWER ON Electronic Switching On or Off of the Radios Voltage Regulators DISCAUDIO Audio Output Signal from the Receiver IC ECLK Clock (not used) EE CS EEPROM Chip Select EMERGENCY CONTROL Emergency Line to switch on the Radios Voltage Regulators EXP BD REQ Service Request Line from Expansion Board EXP1 CS Expansion Board Chip Select 1 EXP2 CS Expansion Board Chip Select 2 EXT KP COL External Keypad Matrix Column Signal EXT KP ROW External Keypad Matrix Row Signal EXT MIC External (from Accessory Connector) Microphone Input EXT SWB+ External Switched 13.2V Supply Voltage F1200 Interrupt Line from ASFIC CMP FECTRL 1 Control Voltage for Front End Filter FECTRL 2 Control Voltage for Front End Attenuator Switch FLASH CE Flash Chip Select FLASH OE Flash Output Enable FLAT RX SND Option Board Audio Output Signal FLAT TX RTN Flat TX Input from Option Board and Accessory Connector FLT A+ Filtered 13.2 V Supply Voltage GP x IN General Purpose Input x GP x IN ACC y General Purpose Input x from Accessory Connector Pin y GP x IN OUT ACC y General Purpose Input /Output x from Accessory Connector Pin y GP x OUT General Purpose Output x GP x OUT ACC y General Purpose Input x from Accessory Connector Pin y GPIO General Purpose Input Output Lines HANDSET AUDIO Handset Audio Output HOOK Hang-up Switch Input HSIO High Speed Clock In / Data Out IF First Intermediate Frequency Signal IGNITION CONTROL Ignition Line to switch on the Radios Voltage Regulators
Notes For All Schematics and Circuit Boards2-7 IN 5V RF REG Supply Voltage for 5V Regulator in RF Section INT KP COL Internal Keypad Matrix Column Signal INT KP ROW Internal Keypad Matrix Row Signal INT MIC Internal (from Control Head) Microphone Input INT SWB Internal Switched 13.2V Supply Voltage INT SWB+ Internal Switched 13.2V Supply Voltage IRQ Interrupt Request from Control Head K9V1 9.1V in Transmit Mode KEYPAD ID Keypad Identification Line LCD A0 LCD Control / Display Data Select LCD CS LCD Chip Select LCD DATA LCD Data Lines LCD E RD LCD Enable Read LCD RW WR LCD Read Write Control LED CNTRL LED Control Lines LED GREEN Green LED Control LED RED Red LED Control LED YELLOW Yellow LED Control LOCK Lock Detect Signal from Synthesizer LSIO Low Speed Clock In / Data Out LVZIF CS LVZIF Chip Select (not used) MIC Microphone Input MISO Serial Peripheral Interface Receive Line MODIN Modulation Signal into the Synthesizer MOSBIAS 2 PA Bias Voltage for second Stage MOSBIAS 3 PA Bias Voltage for third Stage NOISE BLNKR Noise Blanker Enable (Low Band only) ON OFF CONTROL Service Request Line from Control Head / Manual Switching On of the Radios Voltage Regulators ON OFF SENSE (Control Head) On Off Sense Line to Control Head *P ON OFF SENSE (Controller) Service Request Line from Control Head OPT CS Option Board Chip Select OPT PTT PTT from Option Board PA PWR SET ASFIC Output Voltage to set the Transmitter Power PA SWB Switches Supply Voltage for PA Current Control Circuitry PASUPVLTG 13.2 V Supply Voltage of the Transmitter PA PCIC MOSBIAS 1 PA Bias Voltage for first Stage PRESC Prescaler Signal from VCO to Synthesizer PTT IRDEC Microphone PTT Input PTT IRDECODER Microphone PTT Input R W Read Write Signal for RAM / Flash
2-8MAINTENANCE RAM CS RAM Ship Select RDY Service Request Line from Option Board REF CS Reference Chip Select (not used) RESET Reset Line ROW x Keypad Matrix Row x RSSI Received Signal Strength Indicator RX ADAPT Flat TX Path Disable during Transmitter Key-up RX AUD RTN Option Board Input / Output of Receiver Audio Path RX FLAT FILTERED AUDIO Flat or Filtered Audio to Accessory Connector RXIN RF Signal from Antenna Switch into the Receiver RXINJ RF Signal from the VCO into the Mixer SCI RX Serial Communication Interface Receive Line SCI TX Serial Communication Interface Transmit Line SPI Serial Peripheral Interface Bus SPKR- Negative Audio PA Speaker Output SPKR+ Positive Audio PA Speaker Output SQ DET Squelch Detect Signal SYN *P Clock Signal TEMP SENSE Temperature Sense Line for LCD TEMPSENSE Temperature Sense Line from PA to *P TRB TX/RX VCO Switch Signal TX AUD RTN Option Board Output to Transmit Audio Path TX AUD SND Microphone Audio to Option Board TXINJ RF Signal from the VCO into the Transmitter PA U DRIVER Supply Voltage for PA Driver U PREDRIVER Supply Voltage for PA Pre-driver UNSW 5V Permanent 5V Supply URX SND Filtered Audio Signal to Option Board VAG 2.5V Reference Voltage for Analog Circuitry VCOBIAS 1 Switch Signal from Synthesizer VCOBIAS 2 Switch Signal from Synthesizer VCOMOD Modulation Signal into VCO VCTRL VCO Frequency Control Voltage VDDA Regulated 5V for Digital Circuitry in RF Section VOLTAGE SENSE Voltage Sense Line from LCD VOLUME Volume Pot Output VOX Voice Operated Transmit Level VPP Boot Mode Select VS AUDIOSEL Switch Signal to Enable Option Board Audio Output Signal VS GAINSEL Voice Storage Gain Select Line VS INT Voice Storage Interrupt Line
Notes For All Schematics and Circuit Boards2-9 VS MIC Voice Storage Audio Signal into Microphone Path VS RAC Voice Storage Row Address Clock Signal VSF Voltage Super Filtered (5V) VSTBY 5V Supply for *P when the Radio is switched off 4-LAYER CIRCUIT BOARD DETAIL VIEWING COPPER STEPS IN PROPER LAYER SEQUENCE LAYER 1 (L1) LAYER 2 (L2) LAYER 3 (L3) LAYER 4 (L4) INNER LAYERS SIDE 1 SIDE 2
Chapter 3 SERVICE AIDS 1.0 Recommended Test Tools Table 3-1 lists the service aids recommended for working on the radio. While all of these items are available from Motorola, most are standard workshop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed. Table 3-1 Service Aids Motorola Part NumberDescription Application RLN4460_Portable Test SetEnables connection to audio/accessory jack. Allows switching for radio testing. RKN4081_ Programming Cable with Internal RIBIncludes radio interface box (RIB) capability. RLN4853_10 to 20 Pin AdapterConnects RKN4081_ to the radio accessory connector. RKN4083_ Mobile Programming/Test CableConnects radio to RIB (RLN4008_). GTF374_Program CableConnects RIB to Radio microphone input RLN4008_ Radio Interface Box Enables communications between radio and computer’s serial communications adapter. HLN8027_Mini UHF to BNC AdaptorAdapts radio antenna port to BNC cabling of test equipment. GPN6133_ Power Supply Provides the radio with power when bench testing. EPN4040_Wall-Mounted Power SupplyUsed to supply power to the RIB (UK). EPN4041_ Wall-Mounted Power Supply Used to supply power to the RIB (Euro) 8180384J59Housing Eliminator (short)Test Fixture used to bench test the radio pcb 8180384L95 Housing Eliminator (short + top)Test Fixture used to bench test the radio pcb. (Radio using pressure pads to retain pcb) 8180384J60Housing Eliminator (medium)Test Fixture used to bench test the radio pcb 8180384J61 Housing Eliminator (long) Test Fixture used to bench test the radio pcb 3080369B71Computer Interface CableConnects the RIB to the Computer (25-pin) 3080369B72 Computer Interface Cable Connects the RIB to the Computer 9-pin (Use for IBM PC AT - other IBM models use the B71 cable above) 6686119B01Removal ToolAssists in the removal of radio control head.
3-2SERVICE AIDS 2.0 Test Equipment Table 3-2 lists test equipment required to service the radio and other two-way radios. Table 3-2 Recommended Test Equipment Motorola Part NumberDescription Characteristics Application R2600_NTComms System Analyzer (non MPT)This monitor will substitute for items with an asterisk*Frequency/deviation meter and signal generator for widerange troubleshooting and alignment R2680_NT Comms System Analyzer ( MPT1327) to be ordered with RLN1022_ (H/W) RLN1023_ (S/W)This monitor will substitute for items with an asterisk*.Frequency/deviation meter and signal generator for widerange troubleshooting and alignment *R1072_Digital MultimeterAC/DC voltage and current measurements *R-1377_ AC Voltmeter 100µV to 300V, 5Hz - 1MHz, 10Megohm input impedanceAudio voltage measurements WADN133Delay Oscilloscope2 Channel 40MHz bandwidth, 5mV/cm - 20 V/cmWavefor m measurements R1440_ 0180305F17 0180305F31 0180305F39 RLN4610 T1013_Wattmeter, Plug-in Elements Plug-in Elements Plug-in Elements Carry case RF Dummy LoadThruline 50-Ohm, ±5% accuracy 100W, 25 - 60MHz 25W, 100-250MHz 10W, 200-250MHz Wattmeter and 6 elementsTransmitter power output measurements S1339_RF Millivolt Meter100mV to 3 VRF. 10kHz to 1.2GHzRF level measurements R1011_/220V 220V Power Supply 0 - 40V 0 - 40A Programmable
Professional Radio GM Series LB1 (29.6 - 36.0MHz) LB2 (36.0 - 42.0MHz) LB3 (42.0 - 50.0MHz) Issue: March 2001
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