Motorola Gm328 Gm338 Gm398 Detailed 6804112j18 E Manual
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Notes For All Schematics and Circuit Boards 2-11 VSF Voltage Super Filtered (5V) VSTBY 5V Supply for µP 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
2-12 Notes For All Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK
3-1 Section 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_). GT F 3 7 4 _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 test- ing. 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.
3-2Test Equipment 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 sub- stitute for items with an asterisk*Frequency/deviation meter and signal gen- erator for widerange troubleshooting and alignment R2680_NT Comms System Analyzer ( MPT1327) to be ordered with RLN1022_ (H/W) RLN1023_ (S/W)This monitor will sub- stitute for items with an asterisk*.Frequency/deviation meter and signal gen- erator for widerange troubleshooting and alignment *R1072_Digital MultimeterAC/DC voltage and current measure- ments *R-1377_ AC Voltmeter 100µV to 300V, 5Hz - 1MHz, 10Megohm input impedanceAudio voltage mea- surements WADN133Delay Oscilloscope2 Channel 40MHz bandwidth, 5mV/cm - 20 V/cmWaveform measure- ments 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 measure- ments R1011_/220V 220V Power Supply 0 - 40V 0 - 40A Programmable
GM328/GM338/GM398 Mobile Radios Controlhead Service Information Issue: December, 2003
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i Table of Contents Section 1 overview 1.0 GM328 Model (GCN6112_) ................................................................................. 1-1 2.0 GM338 Model (GCN6114_) ................................................................................. 1-2 3.0 GM398 Model (GCN6115_) ................................................................................. 1-3 Section 2 Theory of Operation 1.0 Introduction .......................................................................................................... 2-1 2.0 Controlhead Model for GM328............................................................................. 2-1 2.1 Power Supplies............................................................................................... 2-1 2.2 Power On / Off ................................................................................................ 2-1 2.3 Microprocessor Circuit .................................................................................... 2-2 2.4 SBEP Serial Interface ..................................................................................... 2-2 2.5 Keypad Keys .................................................................................................. 2-3 2.6 Status LED and Back Light Circuit ................................................................. 2-3 2.7 Microphone Connector Signals ...................................................................... 2-3 2.8 Speaker .......................................................................................................... 2-4 2.9 Electrostatic Transient Protection ................................................................... 2-4 3.0 Controlhead Model for GM338............................................................................. 2-4 3.1 Power Supplies............................................................................................... 2-4 3.2 Power On / Off ................................................................................................ 2-4 3.3 Microprocessor Circuit .................................................................................... 2-5 3.4 SBEP Serial Interface ..................................................................................... 2-5 3.5 Keypad Keys .................................................................................................. 2-6 3.6 Status LED and Back Light Circuit ................................................................. 2-6 3.7 Liquid Crystal Display (LCD) .......................................................................... 2-7 3.8 Microphone Connector Signals ...................................................................... 2-7 3.9 Speaker .......................................................................................................... 2-8 3.10 Electrostatic Transient Protection ................................................................... 2-8 4.0 Controlhead Model for GM398............................................................................. 2-9 4.1 Power Supplies............................................................................................... 2-9 4.2 Voltage Regulator Circuit................................................................................ 2-9 4.3 Power On / Off ................................................................................................ 2-9 4.4 Microprocessor Circuit .................................................................................. 2-10 4.5 SBEP Serial Interface ................................................................................... 2-10 4.6 Keypad Keys ................................................................................................ 2-11 4.7 Status LED and Back Light Circuit ............................................................... 2-11 4.8 Liquid Crystal Display (LCD) ........................................................................ 2-12 4.9 Microphone Connector Signals .................................................................... 2-12
ii 4.10 Speaker (Remote Mount Configuration only) ............................................... 2-13 4.11 Electrostatic Transient Protection................................................................. 2-13 Section 3 Troubleshooting Charts 1.0 Controlhead GM328 Troubleshooting Flow Chart ............................................... 3-1 1.1 On/Off ............................................................................................................ 3-1 1.2 Microprocessor ............................................................................................... 3-2 2.0 Controlhead GM338 Troubleshooting Flow Chart ............................................... 3-3 2.1 On/Off ............................................................................................................ 3-3 2.2 Microprocessor ............................................................................................... 3-4 2.3 Display............................................................................................................ 3-5 2.4 Backlight ......................................................................................................... 3-6 3.0 Controlhead GM398 Troubleshooting Flow Chart ............................................... 3-7 3.1 On/Off ............................................................................................................ 3-7 3.2 Microprocessor .............................................................................................. 3-8 3.3 Microprocessor (cont.).................................................................................... 3-9 3.4 Display ......................................................................................................... 3-10 3.5 Keypad Backlight ......................................................................................... 3-11 3.6 Display Backlight ......................................................................................... 3-12 Section 4 Controlhead PCBs / Schematics / Parts lists 1.0 Allocation of Schematics and Circuit Boards ....................................................... 4-1 2.0 Controlhead GM328 - PCB 8486146B07 / Schematics ....................................... 4-3 Controlhead GM328 - PCB 8486146B07 .............................................................. 4-3 Controlhead GM328 - Schematic Sheet 1 of 2 ....................................................... 4-4 Controlhead GM328 - Schematic Sheet 2 of 2 ....................................................... 4-5 Controlhead PCB 8486146B07 Parts List .............................................................. 4-6 3.0 Controlhead GM338 - PCB 8486155B06 / Schematics ....................................... 4-7 Controlhead GM338 - PCB 8486155B06 .............................................................. 4-7 Controlhead GM338 - Schematic Sheet 1 of 4 ....................................................... 4-8 Controlhead GM338 - Schematic Sheet 2 of 4 ....................................................... 4-9 Controlhead GM338 - Schematic Sheet 3 of 4 ..................................................... 4-10 Controlhead GM338 - Schematic Sheet 4 of 4 ..................................................... 4-11 Controlhead PCB 8486155B06 Parts List ............................................................ 4-12 4.0 Controlhead GM398 - PCB 8486178B03 / Schematics ..................................... 4-13 Controlhead GM398 - PCB 8486178B03 ............................................................. 4-13 Controlhead GM398 - Schematic Sheet 1 of 4 ..................................................... 4-14 Controlhead GM398 - Schematic Sheet 2 of 4 ..................................................... 4-15 Controlhead GM398 - Schematic Sheet 3 of 4 ..................................................... 4-16 Controlhead GM398 - Schematic Sheet 4 of 4 ..................................................... 4-17 Controlhead PCB 8486178B03 Parts List ............................................................ 4-18
1-1 Section 1 OVERVIEW 1.0 GM328 Model (GCN6112_) The Controlhead contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio and several indicator Light Emitting Diodes (LED) to inform the user about the radio status. To control the LED’s and to communicate with the host radio the control head uses the Motorola 68HC11E9 microprocessor.
1-2GM338 Model (GCN6114_) 2.0 GM338 Model (GCN6114_) The Controlhead contains the internal speaker, the On/Off/Volume knob, the microphone connector, several buttons to operate the radio, several indicator Light Emitting Diodes (LED) to inform the user about the radio status, and a 14 character Liquid Crystal Display (LCD) for alpha - numerical information e.g. channel number or call address name. To control the LED’s and the LCD, and to communicate with the host radio the control head uses the Motorola 68HC11E9 microprocessor.