Motorola Gm Series Detailed 6864115b62 B Manual
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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...
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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...
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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...
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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...
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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
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2-10MAINTENANCE
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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_...
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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_...
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Controlhead GM140/340/640 - PCB 8486146B07 / Schematics4-32.0 Controlhead GM140/340/640 - PCB 8486146B07 / Schematics D0871 D0872 D0873 D0874 D0875D0876 D0877D0878D0879 D0881 D0884 D0885 D0886 D0887 D0888 2 3 5 7 9 864 10 J0811 JU0852 JU0853 JU0854 4 1 235 R0823 S0861 S0862 S0863 S0864S0865 S0866 ZWG0130114-A C0802 C0803 C0804 C0805 C0806 C0808 C0809 C0810C0811 C0813 C0815 C0816 C0817 C0818C0819 C0821 C0822 C0823C0824 C0831 C0832 C0833 C0843 D0821 D0822 D0831 12 J0801 1 2 P0801 Q0821 Q0822 Q0823 Q0841...
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4-4Controlhead GM140/340/640 - PCB 8486146B07 / Schematics HOOK GROUND MIC 10 GM300CONTROL HEAD PTT_IRDECODER 7CONNECTOR 8J0801 9 MICROPHONE CONNECTOR SCI_RX BOOT_VPP J0811 RESETBOOT_MODE WARIS HANDSET_AUDIO 1 CONTROLLER KEYPAD ID CONTROL HEAD ID SCI_TX EXT_KP_ROW EXT_KP_COL FLT_A+ 4 5 6 BUS+ 2 3 5V VR0822 5.6VR0843 2.2K NU GND INPUT RESET_ 7 U0835 MC33464N-45ATRJ0801-8 JU0853 SWITCH C0833R0833 0.1uF 2 47K10K R0844 55 VDD 22 VRH 21 VRL 23 VSS1 VSS2 24 49 VSS3 45 XIRQ 33 XTAL PE3_AN3 19 PE4_AN4 14 16...