Motorola Astro Xts5000 Detailed 6881094c31 E Manual
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November 16, 20066881094C31-E 5-10Troubleshooting Charts: DC Supply Failure DC Supply Failure (for kit NNTN5567)—Page 1 4 Check Voltage At C516 Check Voltage At R518 Check Voltage At C523 Check Voltage At C519Ye s Ye s Ye sNo No No No Ye sVoltage Approximately 1.875 V? Voltage Approximately 1.55 V? Voltage Approximately 2.9 V? Voltage Approximately 5.0 V?Replace U501 Replace VOCON
6881094C31-ENovember 16, 2006 Troubleshooting Charts: DC Supply Failure 5-11 DC Supply Failure (for kit NNTN5567) —Page 2 MAEPF-27392-C Check R501, D502, L501, and C504 Check Voltage at R560Replace Problem Component Voltage = V2?*Replace U501 (GCAP II) Check R502, C506, L502, and D503 Voltage = 3.77V+/-5%? Voltage = 1.85V+/-5%?Components OK?ReFLASH HOST C Code Fixed? End Components OK? Check Voltage at R501Replace Problem Component Check Voltage at B502 (VOCON) No Ye sYe s Ye s Ye s Ye sYe s NoNo No No 1 2 32 No * per Standard Bias Table
November 16, 20066881094C31-E 5-12Troubleshooting Charts: DC Supply Failure DC Supply Failure (for kit NNTN5567) —Page 3 MAEPF-27393-C Voltage = 5.0V+/-5%? Check Voltage at pin 5 of U505 (VOCON) No No No No No No No No Ye s Ye sYe s Ye s Ye s Ye s Ye s Ye s 3 Check E6, C6, C8, and D2 Voltage = V2?*Component s OK? Check R503, D501, C509, C510, and C508Replace Problem Component Replace U1 on RF Bo ar d Replace Problem Component Component s OK? Check Voltage at TP7Replace U2 Check Voltage at TP5 Check 700-800: D1, E5, C12, C13, and C14 VHF: E5, C 3, C 4, C5, and D1 Check Voltage at TP3Replace U3 EndReplace U1 Voltage = 5.0V+/-5%?Replace Problem Component Voltage = V2?* Component s OK?Replace Problem Component Check E7, C9, C10, C11, and D13Component s OK? * per Standard Bias Table * per Standard Bias Table
6881094C31-ENovember 16, 2006 Troubleshooting Charts: Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits) 5-13 5.5 Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits) Page 1 NOTE:The NNTN4563 VOCON board is compatible only with the 7285726C02 display module, and the NNTN4819 VOCON board is compatible only with the 7285726C03 display module. MAEPF-27505-B End Replace LCD Display Check integrity of B101 2.775 V
November 16, 20066881094C31-E 5-14Troubleshooting Charts: Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits) Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits) Page 2 MAEPF-27506-A V = 0 V? Check P_S* at J301, pin 4 No Yes Ye s No No Yes Ye s No No No No No Ye s Ye sYe s Ye s 1 Problem Resolved? Problem Resolved? Problem Resolved? Problem Resolved? Check REG_SEL at J301, pin 7 Check RESET at J301, pin 6 Verify Signal Path Integrity and correct Verify Signal Path Integrity and correct Verify Signal Path Integrity and correct Verify Signal Path Integrity and correct Check CS at J301, pin 5 3 V = V2?* V = V2?* End EndEnd End V = V2?* * per Standard Bias Table * per Standard Bias Table * per Standard Bias Table
6881094C31-ENovember 16, 2006 Troubleshooting Charts: Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits) 5-15 Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits) Page 3 MAEPF-27507-A Low- Level Pulses Present? Check Active Low Status on both RESET and CS Use an oscilloscope to check for a low-level (0V) pulse occurrence during power-on initialization period. Use an oscilloscope to check for either a low-level (0V) pulse or high-level (0-V2) occurrence during power-on initialization period.No Ye sNo Ye s 3 Signal present at appropriate level? Replace Display Check J301, pins 15 and 16 for appropriate voltage levels (0-V2)Return radio to service depot for further analysis
November 16, 20066881094C31-E 5-16Troubleshooting Charts: Display Failure (NTN9564) 5.6 Display Failure (NTN9564)—Page 1 NOTE:The NTN9564 VOCON board is compatible only with the 7285726C01 display module. MAEPF-27404-O End Replace LCD Display Check integrity of B102 1.8
6881094C31-ENovember 16, 2006 Troubleshooting Charts: Display Failure (NTN9564) 5-17 Display Failure (NTN9564)—Page 2 MAEPF-27405-O V = 1.85V? Check P_S* at J301, pin 4 No Yes Ye s No No Yes Ye s No No No No No Ye s Ye sYe s Ye s 1 V = 1.85V?Problem Resolved? Problem Resolved? Problem Resolved? Problem Resolved? Check REG_SEL at J301, pin 7 Check RESET at J301, pin 6 Verify Signal Path Integrity and correct Verify Signal Path Integrity and correct Verify Signal Path Integrity and correct Verify Signal Path Integrity and correct Check CS at J301, pin 5 3 V = 1.85V? V = 1.85V? End EndEnd End
November 16, 20066881094C31-E 5-18Troubleshooting Charts: Display Failure (NTN9564) Display Failure (NTN9564)—Page 3 MAEPF-27406-O Low- Level Pulses Present? Check Active Low Status on both RESET and CS Use an oscilloscope to check for a low-level (0V) pulse occurrence during power-on initialization period. Use an oscilloscope to check for either a low-level (0V) pulse or high-level (1.85V) occurrence during power-on initialization period.No Ye sNo Ye s 3 Signal present at appropriate level? Replace Display Check D0-D7 for appropriate voltage levelsReturn radio to service depot for further analysis
6881094C31-ENovember 16, 2006 Troubleshooting Charts: Volume Set Error 5-19 5.7 Volume Set Error Verify operation of volume knob using Button Test flowchart Volume Set Error YesRefer to Rx VOCON Audio flowchart NoVolume check OK? Using a voltmeter, measure voltage at R239 when volume knob is at maxVoltage = V_2.9?Replace R232 Yes No Verify control top/PTT flex connections Problem resolved?Yes End No Replace housing assembly