Motorola Gm Series Detailed 6864115b62 B Manual
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Page 71
Controlhead GM380/1280 Troubleshooting Flow Chart 3-9 3.3 Microprocessor 1 Data Signal on J0801 Pin 5 BUS+ ? Data Signal on TP0877 SCI_RX ? Data Signal on TP0878 SCI_TX ? Check / Replace D0872 / R0887 YES YES YES NO NO NOCheck / Replace U0871 Check Radio Controller Check / Replace R0888 / R0889 Measure with scope while rotating Volume Pot
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3-10TROUBLESHOOTING CHARTS 3.4 Display TP0973 Voltage Sense between 2V and 2.4V ? Activity on Address & Data lines A0 / D0...D7 / CS1 of U0971 ? NO YES YES NO Check / Replace Flex connection Resistors on Address & Data lines and LCD Module Check / Replace LCD Module Check for shortage U0871 Power Up Alert Tone is audible, volume knob does operate, indicator/backlight is on but nothing is seen on the display.
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Controlhead GM380/1280 Troubleshooting Flow Chart 3-11 3.5 Keypad Backlight U0871 Pin 25 is toggling ? Base of Q0943 > 0.7V ? Collector of Q0943 >5V & < 11V ? Check / Replace Q0941 / R0955 / R0957 YES YES YES NO NO NO Check / Replace Q0943 / U0941 / R0941 R0943 / R0949 / R0951 Check for shortage U0871 Check / Replace R0945 / C0943 / R0947 Power Up Alert Tone is audible, volume knob does operate, display is on but no keypad backlight.
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3-12TROUBLESHOOTING CHARTS 3.6 Display Backlight U0871 Pin 24 is toggling ? Base of Q0963 > 0.7V ? Collector of Q0963 >5V & < 11V ? Check / Replace Q0961 / R0975 / R0977 YES YES YES NO NO NO Check / Replace Q0963 / U0941 / R0961 R0963 / R0969 / R0971 Check for shortage U0871 Check / Replace R0965 / C0963 / R0967 Power Up Alert Tone is audible, volume knob does operate, display is on but no display backlight.
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Chapter 4 CONTROLHEAD PCB / SCHEMATICS / PARTS LISTS 1.0 Allocation of Schematics and Circuit Boards .Table 4-1 Controlhead Diagrams and Parts Lists PCB : Controlhead GM140/340/640 8486146B07 Main Board Top Side 8486146B07 Main Board Bottom SidePag e 4-3 Pag e 4-3 SCHEMATICS Sheet 1 of 2 Sheet 2 of 2 Pag e 4-4 Pag e 4-5 Parts List 8486146B07Pag e 4-6 Table 4-2 Controlhead Diagrams and Parts Lists PCB : Controlhead GM160/360/660 8486155B06 Main Board Top Side 8486155B06 Main Board Bottom SidePag e...
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4-2controlhead PCB / Schematics / Parts lists
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Controller T2 / Schematic Diagrams3-32.0 Controller T2 / Schematic Diagrams FLT_A+ IGNITION_CONTROLINT_SWB+ IN_5V_RF_REG ON_OFF_CONTROLPASUPVLTGRESET VSTBY TX_AUD_RTN TX_AUD_SNDUART_RX UART_TX URX_SND VS_AUDSEL VS_GAINSELVS_INT VS_MIC VS_RAC SUPPLY_VOLTAGE 5VD9V3 BATTERY_VOLTAGE DC_POWER_ON EMERGENCY_CONTROLEXT_SWB+NOISE_BLNKRON_OFF_CONTROL OPT_PTT PASUPVLTG PA_PWR_SETRDY RESET RSSI RX_ADAPT RX_AUD_RTN RX_FLAT_FILTERED_AUDIO SCI_TX SPI(0:10)SPKR+ SPKR-TEMPSENSE GP2_OUT_ACC4 GP3_IN_ACC6 GP4_IN_OUT_ACC8...
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3-4Controller T2 / Schematic Diagrams C0622 47uF C0663C0662 0.1uF.01uF10 R0652 0.1uF C0655 Q0641C0611 22uF J0601-1 33uF C0652D0621 150KR06621.2K R0643 R0611 56K 0.1uFNU 470pF C0621 C0645 33uF C0644 R0641 C0641 470pF10K J0601-2 10uF C0654 C0612 0.1uF Q06615.6V VR0621 MC78M05 2 GND 1 IN3 OUT 5.6V U0651 NU VR0671 30K R0671 10K R0672 U0611 ADJ1 GND1 3GND2 62ON_OFFVIN 4 VOUT5 LM2941 C0671 0.1uF D06611 ADJGND1 3GND2 6ON_OFF 2 4 VIN5 VOUT LM2941U0641 Q0662R0651 57R01 10 R0642 E0631 J0601-3 7.5K C0601 C0603...
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Controller T2 / Schematic Diagrams3-5 SYN F1200CLK GP2_OUT CSX DATA LSIO VOX SQ_DET HSIO CH_ACT R0251 47K 0.1uFC0262 C026182pFNU C0204 0.1uF C0235 C0231 .022uF 4.7uFC0251 0.1uF NU R02751000pFC0276 510K 10uF C0212 R0206 10K 24K 2R0273 NU 0.22uFC0224 100pF C0233R0208 0.1uF2.2K C0222100pF C0243 2200pFC0203 NU R0262 100K 0.1uF C02277 4 11 6MC3403 U0211-2 6 5 R0276 15K MC3403 2 31 4 11U0211-1 24K R0221 R0269 470 NU 0.1uF C0265 0.1uFC0266 4Q0271 INV9M_SS8NINV14 OUT1 OUT2 6 3 RR VCC7 U0271GND125 GND2 .033uF...
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3-6Controller T2 / Schematic Diagrams 32 31 SPEAKER+ BUS+ 11 7 17 12 10VS_CS INT_MIC 26 Gnd 1 DIG_IN_OUT_8 RST* RSSI 7 4 18 17 VS_MIC DB1 36 39 38 30 13 15 17 33 6 4 DIG_IN_5 WITH WAKEUP (EMERGENCY) 13 37 911 DB2 Key_Intrp DIG_IN_OUT_4 = Sel5/MDC UART_TX = MPT 9V3 LED_EN DB0DATA9 DIG_IN_3 = Sel5/MDC UART_RX = MPT Tx_Aud_Snd Tx_Aud_Rtn PTT Vddd 25 6J0551 9 3 2 1 NC9 20 13 7 8 NC NC10 11 124 15REAR VIEW PCB 2 DATA CLK 8 5 NC GROUND 14 Rx_Aud_Rtn Rdy/ReqEXPANSION BOARD 18-PIN CONNECTOR DATA...