Motorola Lcs2000 68p02945c70 O Manual
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8-4 Troubleshooting Troubleshooting Flow Chart for Synthesizer Start Controller Check synthesizer loop filter.Replace U5702. 212mV on C5750? Is AUDIO MOD YesNo Is there Yes NoSYNTHESIZER DEVIATION SYNTHESIZER PENDULUM Start Is 2.1 MHz Replace R5731. Check C5733 and R5715. Replace U5702. Replace L5700. Check L5704. Replace U5703. Replace U5700. Check C5738, C5724, C5713 L5709. Is 16.8 MHz Is 5V present at U5700-13? Is 5V present at L5700? Is 5V present at U5703-2? Is 9.3V present at U5703-1? Is 16.8MHz present at U5700-10? at R5731?present at U5700-10?present Yes Yes Yes Yes Yes Yes No NoNo Yes No No No No at C5700?present
Troubleshooting 8-5 Troubleshooting Flow Chart for Synthesizer (cont.) NO Tx INJECTION Start Is 5V present at Q5707-C?Check Q5707 Is 2.1 MHz present at R5731? DC circuit. Check Q5701 and Q5705 DC circuits. Check RF path line-up.
8-6 Troubleshooting Troubleshooting Flow Chart for Power Amplifier START No No No No No NoYes Yes Yes Yes Yes YesIs PA controlIs Red light on? Is control head Is K9.1 OK?Go to Go to Go to controller Is there Faulty power setting DAC Faulty coupler. Is Check R6519, U0701, Is Faulty current sense Is Faulty integrator.Faulty REF voltage. Is Is RF at Are voltages Is RF Is RF after Is RF after Replace Antenna Check CR6501, Q6506, Check U6502, R6520, Replace U6501. Check CR6502, CR6503, Check L6513, L6513,Is there 5V at Go to synthesizer PA RF SECTION FAULTPA LOGIC SECTION FAULT Levels were measured with an RF probe in series with 0.5pF Is synt outGo to controller *U6501 DC voltages: Pin 2: 9.1V (during Tx only) Pins 3 and 4: A+-0.1V No No No No No No No No NoNo No No Yes Yes YesYes Yes Yes Yes YesYes Yes Yes Yes OK?control head troubleshooting. 5V at Is there K9.1 ENB?troubleshooting. 9.3V at Q0741 or Q0742?Replace Q0741 and Q0742. synthesizer troubleshooting. troubleshooting. PA_ENABLE? (PA_PWR_SET)at U0702-2 there ~2V or software Is there ~ OV at U0701-7?Check CR6509, R6515, CR6506, R6514, L6516, R6512. L6515, R0725, R0721, R0722, R0723. mechanism. Check R6520, U0701 DAC (U0702-11). Check R0251, R0252, U0251. Replace U0701. connector.Harmonic Filter at ~23dBm? C6543. CR6504, R6538, R6539, R6537.L6519, L6504 ,L6505, L6506,VR6501. Q6501, L6503, L6502.troubleshooting. U6501 ~2dBm? >2dBm?at ~0V? at U6501* OK? output ~24dBm? at U6501 Tx switch at ~24dBm?? U0701-14 at
Troubleshooting 8-7 Troubleshooting Flow Chart for Controller Start Apply power to radio and Was good or bad power-on Yes End Was good power-on beep Are alert tones enabled with RSS? Use RSS to enable tones. Was good power- on beep present? Main radio board must be replaced. Are tones present on power up at U0202, pin 8 Audio problem. Trouble- shoot audio circuitry. With power connected to radio and the radio turned on, check the following: 1) 5 V at pin 1 of U631 and pin 71,12,31,41 of U0101. 2) Check for 14.7456 MHz at pin 73 of U0101. 3) Check DC at pin 75 of U0101. If < 4.5V DC check TP0200 for 2.1 MHz signal. 4) Check for typical voltages of U0101 and U0201. beep present? turn on. present? Done Done Done Yes Yes Yes Yes No/Don’t know No No No Are alert tones enabled with RSS? RIB/radio connections OK? Yes No No Yes (RX AUDIO)? Reprogram radio with RSS. Apply power to radio and turn on. Check radio con- nection to RIB and computer.
8-8 Troubleshooting Troubleshooting Flow Chart for Control Head Start Check controller. Check LCD, U0932, Q0953, and ZEBRA connectors. Check U0941, Q0942-4, D0942-4. Check R915-922, R955, and R958.Do the LEDs light? Check U0942, and U0970. Is backlight OK? Is volume OK? Check U0941, Q0951, Q0952,D0951-D0970. Is keypad OK? Is the display on?Is SPI communication OK? End Yes No Yes Yes Yes No Yes YesNo No No No
2 68P02945C70-O June 1996 Schematic Diagram for FLF5582A Main Board, 13k
June 1996 68P02945C70-O 3 Schematic Diagram for FLF5582A Main Board, Synthesizer Section K9.1 K9.1 TX_INJ 9V3 RF_REG_5VPEND_SEL 10nFC5744 10nF C5747 C5798 0.1uF 0.1uFC5799 SPI_CLK SYNT_LOCK SPI_DATA PEND_SENS SYNT_SEL MOD_IN 2.1MHZLO_INJ DET_AUDIO DET_AUDIO RSSI RSSI ADAPT ADAPT R5753 IF6_5 33 39pF C581322 R5755 39pF C5814 270 0.1uF R5757 270 R5756 C5806 E5704 SHIELDR5748 22 IF5_5 IF5_7IF6_9 IF7_2 IF5_4 IF6_11 IF5_6L5708 150nH TP5702 TSTP TP5700 TSTP TP5703 TSTP TP5701 TSTP IF6_3 Q5707330 R5752 2.7k R5750 2.7k R5751 OUT E570239pF C5810 U5706M_LIN 3 GND1 IN SHIELDC5711 OUT 100pF SHIELDE5700 E5703 SHIELDM_LINU5707 GND 3IN 1 E5701 SHIELD IF6_2 IF6_7 IF6_6 330 IF5_3IF7_7 R5754 IF6_8 IF6_1IF6_4IF5_2 IF7_1 5V_REG 0.1uF C5804 5V_REG C5805 0.1uF5V_REG 39pF C5779 R5719 510 Q5701 3906L 510 C5776 39pFR5714 2.7k 510 R5721 R5720 NE85634 C5731 0.1uF 510 R5722 Q5705IF5_1 0.1uF IF6_10 510 R5724 C5730 C5774 510 R5725 R5727 39pF C5775 39pFR5726 510 510 C5748 .01uF 4.7uF C5719 C5709 100pF L5702 C5710 100pF 39pF C57941pF C5791 1.0uHC5790 CR5702 1SV2293.9pF 10k R5746 C5792 6.8k R5747 C5793 2.7pFQ5706 2.7pFC5788 180 R5745 R5706 510 100pF R5705 10kL5703 1.0uH R5701 0 R5702 0 R5729 150 4.7k R5712 39pF C5778 10 R5741 C5771 1.5k R571839pFR5713 4.7k 51 R5735 39pF R5732 100 C5773 L5701 1.0uH R5733 100 C5782 CR57014.3pF510 R5723 1pF 1SV229C5783 2.7pFC5785 10k 2.7pFQ5704 R5743 180 R5744 C5784100pF C5787 2.4pF C5786 C5704 3pF C5703 2.4pF SW_TX 100pFC5795SW_RX 22nF C57000.1uF C5743 22nF C5729 100 R5731 C5769 39pFR5739 2.4pF C5789 R574051 10k 51Q57028V5 R5703C5708 39pF 39pF C5770 C5772 39pF Q5703 330 R5728 10k R5710 39pF C5766AUX_IN2 AUX_OUT 5 GND1 NC 39pF C5767 39pF U5705RHOM_FMC_2 3 +V 4 22nFC5768 C5742 C5763 0.1uF C5727 R5742 39pF+V3 AUX_IN 4AUX_OUT2 GND 5NC1 6.8k C5764 39pF RHOM_FMC_2U5704 C5741 22nF39pF C5765 C5728 0.1uF1.0uH L5707 C5716 4.7uF 8V5 SW_RX SW_TX C5707 39pF C5702 0.1uF51 R5736 330 C5706 39pF R5704GND 2 3 GND 4 GND 6 GND 7 GND C5759 UPC1678G U5701 L5706 15VCC 8 39pF L5705 150nHC5760 39pF 150nH R5737 220.1uF C5726C5715 4.7uF R5738 2239pF C5761 5V_REG C5762 39pF GNDR5711 4.7k 8V5 8V5 NPN-1 Q5700 INOUT C5756 39pF C5723 0.1uFC5718 4.7uF 39pF C5757 C5737 L5709 560nH22nF C5724 C5738 22nF78M05 U5703 3 GND 1 10uF C5713 0.1uF22nF C5739 I2 O C5714 4.7uF 0.1uF C57251.0uH L5704 C5740 22nFC5758 39pF 5V_REGC5701 0.1uFC5705 5V_REG 9.3V 5V_REGC5749 5V_REG39pF 1.200N C575051 R5734 1.200N2k R5716 C5796 0.1uFC5736 22NnF10nF C5745R5717 2K 0.1uF C579710nF C5746 C5722 0.1uFTRIPLE_DIODECR5700 C5754 39pF 0.1uF C580239pF C5755 C5803 0.1uF 0.1uF 9.3VQFP_FRACTIONAL_N CEX7 CLK6 CPB|AS127 CPB|AS226 DATA5 DC5V 12 DC5V1 22 DC5V2 23DC5V33 C5721 LOCK2 MODIN8MODOUT28 PREIN 20SUPFCAP 17 SUPFOUT 18 SUPIN 19 TEST1 24 TEST225 U5702 AUX31 10uF C5712FREFOUT 11 GND 13 GND1 21 GND230 GND44 IADAPT31 IOUT29 22nF C5732 VCP32 VMULT1 10VMULT2 9 WARP 16XTAL1 14 XTAL2 15 3.3k R5707 2.2k R5700200k R5708 0.1uF C5720200k R5709 4.7uF C5717 22nF 22nF 1.0uH C5733 L5700 C5751 33nFC5735 C5753 39pFR5715 2.2k 39pF C5752 23C_EXT7 DE 22nFC5734 N.C. 31 N.C. 32U5700PENDULLUM CE S0 21S1 25 229 DET8 F_OUT10 N.C. 2 N.C. 19N.C. 20 N.C. 27N.C. 28N.C. 29 N.C. 30 26 1 N.C. N.C. 3 N.C. 4 N.C.5 N.C.6 N.C. 15N.C. 16N.C. 17N.C. 18 VCO FRAC_N NU NU NU NU NU NOT USEDNOT USED NU NU 73D02947C29-O 5V SQ WAVE (1.05MHz)12-13.5V DC MIMIC LINE UP SWITCH SCKSS 24 VDD13 14VDDV_OPT12 V_REG11 YSSD|YSSA This document was created with FrameMaker 4.0.3
4 68P02945C70-O June 1996 Schematic Diagram for FLF5582A Main Board, Power Amplifier Section, Power Amplifier Sub-section 1V @ Tx1.8V @ Tx 2.6V @ Tx 1V @ Tx0.3 - 1V +18dBm+24dBm (-) (+) POWER CONNECTOR ANTENNA CONNECTOR 73D02947C26-O SHEET 1 OF 2 68nH L6517 1uF R6520 SHUNT 39pFCURRENT_SENSE_ RX_IN PA_TEMP K9.1 PA_CNTRLVFORWARD TX_INJ 39pF C6518 GNDR6527 300 PA_K9.1 A+_CURRENT_SENSE+RF_OUT C6527 IF42 IF11 TSTP3.3pF J6501COAX_BNC 1 GND 2 L6502 7.66nH C6553 +DC|SUP. 4 +DC|SUPP. 6 GND 7 GND1 1 RF_INPUT 5 RF_OUTPUT L6519 C6541 XHW2821 U6501 2 +DC|BIAS 3 1.8pF C6519 39pF 5.6pF 1.8pF 18pFC6552 12pF C6520 C6502 R6537 C6523 R6538 47 47IF41 TSTP IF26 TSTP IF22 TSTP IF21 TSTP TSTP IF81 IF24 TSTP TSTP C6501TSTP IF25 39pFL6520 82nH TSTP IF23 0.1uF C6551R6532 100 1.8pF C6542 1.8pF L6518100 R6531 L6508C65407.66nH RHOM_FMC_2 U6502 23.75nH GND 5 NC 11000pF3.3pF 220 +V 3 AUX_IN4 AUX_OUT 2 C6524C6525L6513 7.66nH R6555 VR6501 MMBZ5244LL6506 L6509 68nH 68nHL651439pF C6543 0.1uF C6546 0.1uF C6507 0.1uF C6544 C6550 0.1uF C6545 39pF C6549 0.1uF 68nH L6515 R87151 C6534 CR6509 R6539 SMBV1032LTI39pF 47C6526 CR650439pF C6529R6515 3.3k 10pF CR6506 R87151 3.3kR651468nH L6516 100 R6512 C6510 .01uFC6535 39pF 1.5k R6524 R6523 1.5kC6509 1.5k R6525.01uF 0.1uF C6512 C6516 1uF C6515C6513 0.1uF L6505CR6508 MR2540 C65381 C6537 39pF J65022 MA4P1250 CR6503 68nH L6511MA4P1250 82nHL6507 R6519 CR6502 MMBD6100LCR6501 47k R6526 10 R6503 10L6501 Q6506 PZT2222AT1 39pF 68nHQ6501 B BCC EE C6503MRF8372 EE 68nH L6503 R6502 22 39pF C6506R6506 22 39pF C6505 C6517 39pF C6514 1uF R6504 510 0.1uF C6511R6505 1k .01uFC6508 L6504 C6532C6533 39pF39pF This document was created with FrameMaker 4.0.3
June 1996 68P02945C70-O 5 Schematic Diagram for FLF5582A Main Board, Power Amplifier Section, Power Control Sub-section R0704 DAC_CE_7PA_CNTRL 10k A+_CURRENT_SENSE+ CURRENT_SENSE_ TEMP ANA_FREQ_CONT SPI_CLCK_SRC K9.1 R0734 C0701 MC3303 IF3_8 IF_IN122k C0712 IF_IN1IF3_5R0702 22nF2.2k C0727C0711 0.1uF PA_PWR_SET 9V3 PA_ENABLE SPI_DATA_SRCSW_B+VAG K9.1_ENABLE9V3 VAG 9V39V3 PA_TEMP VFORWARD3.3k R0705 R0722 22kR0711 IF3_3 IF_IN1 IF3_7 IF_IN122k IF_SS1 IF7_4 IF_IN1 IF3_1 4.7k R0735IF_IN1 IF2_2 IF_IN2 IF2_1 C0713 39pF C0702 U0701 39pF 39pF 4.7kR0716 10.0k 4.7k R0733 C0714P R0720 10.0k1k 39pF 4.7kR0715 100 R0714 R0732 U0702 CLOCK 10DIN 1 DOUT15 ENABLE_ 6 NC1 8 NC2 9Q1-OUT2 Q2-OUT4 13 R1-OUT3 R2-OUT5 R3-OUT12 R4-OUT14 VDD16 VSS 7 39pF MC144111 C0703 R0742 1.5kQ3-OUT11 Q4-OUTR0703 10k 1.5k R0741R0713 510 510 R0710 39pF C0722 C0741 R0726 10k 39pFC0723 39pF 3904L C0725 39pF NPN Q0731 R0743Q0742 DTC144EK GND INOUT1k 0.1uF Q0741R0712 TSTPIF2_3 IF_IN2 IF_IN1 IF3_4 IF_IN1 IF7_100 IF3_9 IF_IN1IF2_5 IF_IN1 IF3_2 10K R0725510 R0751 IF_IN1 100k R0706510 R0750 IF2_6 MMBD6100L CR0721 IF3_6 IF_SS1 MC3303 U0701 U0701 MC3303 MC3303 U0701 IF_IN2 IF2_410.0k R0717 C0724 0.1uF 10.0k R0718R0719 1k 100k R0729 R0728 100k R0731 100kR0730 R0727 100k 100k C0731 0.1uF 4.7k R0736 R0737 4.7k 39pF R0721C0726 R0723 100k 5.6K 3.3k R0724 This document was created with FrameMaker 4.0.3