Motorola ASTRO XTL 1500 Detailed Service Manual page 12

Table of Contents
5.6.21 Low or No RX Injection Signal (380-470 MHz and 450-520 MHz) ................................5-32
5.6.22 Low or No TX Injection Signal (380-470 MHz and 450-520 MHz) .................................5-33
5.6.23 No TX Audio (380-470 MHz and 450-520 MHz) ............................................................5-34
5.6.24 TX or RX VCO Unlock (Fail 001) (380-470 MHz and 450-520 MHz)-Part 1 of 2 ........5-35
5.6.25 TX or RX VCO Unlock (Fail 001) (380-470 MHz and 450-520 MHz)-Part 2 of 2 ........5-36
5.6.26 RF Power Amplifier (RFPA)-No or Low TX Power Output (380-470 MHz and
450-520 MHz)-Part 1 of 5.............................................................................................5-37
5.6.27 RF Power Amplifier (RFPA)-No or Low TX Power Output (380-470 MHz and
450-520 MHz)-Part 2 of 5.............................................................................................5-38
5.6.28 RF Power Amplifier (RFPA)-No or Low TX Power Output (380-470 MHz and
450-520 MHz)-Part 3 of 5.............................................................................................5-39
5.6.29 RF Power Amplifier (RFPA)-No or Low TX Power Output (380-470 MHz and
450-520 MHz)-Part 4 of 5.............................................................................................5-40
5.6.30 RF Power Amplifier (RFPA)-No or Low TX Power Output (380-470 MHz and
450-520 MHz)-Part 5 of 5.............................................................................................5-41
5.6.31 RFPA Power Control-No VGBIAS (380-470 MHz and 450-520 MHz) ........................5-42
5.6.32 No 16.8 MHz Reference Oscillator Frequency (700-800 MHz) ......................................5-43
5.6.33 Poor RX Sensitivity or No RX Audio (700-800 MHz)-Part 1 of 2..................................5-44
5.6.34 Poor RX Sensitivity or No RX Audio (700-800 MHz)-Part 2 of 2..................................5-45
5.6.35 RX IF-Poor SINAD or No Audio (700-800 MHz) ..........................................................5-46
5.6.36 RX Back-End-Poor SINAD or No Audio (700-800 MHz)-Part 1 of 3..........................5-47
5.6.37 RX Back-End-Poor SINAD or No Audio (700-800 MHz)-Part 2 of 3..........................5-48
5.6.38 RX Back-End-Poor SINAD or No Audio (700-800 MHz)-Part 3 of 3..........................5-49
5.6.39 Low or No RX Injection Signal (700-800 MHz) ...............................................................5-50
5.6.40 Low or No TX Injection Signal (700-800 MHz) ...............................................................5-51
5.6.41 No TX Audio (700-800 MHz) ..........................................................................................5-52
5.6.42 TX or RX VCO Unlock (Fail 001) (700-800 MHz)-Part 1 of 2.......................................5-53
5.6.43 TX or RX VCO Unlock (Fail 001) (700-800 MHz)-Part 2 of 2.......................................5-54
5.6.44 RF Power Amplifier (RFPA)-No or Low TX Power Output (700-800 MHz)-
Part 1 of 5........................................................................................................................5-55
5.6.45 RF Power Amplifier (RFPA)-No or Low TX Power Output (700-800 MHz)-
Part 2 of 5........................................................................................................................5-56
5.6.46 RF Power Amplifier (RFPA)-No or Low TX Power Output (700-800 MHz)-
Part 3 of 5........................................................................................................................5-57
5.6.47 RF Power Amplifier (RFPA)-No or Low TX Power Output (700-800 MHz)-
Part 4 of 5........................................................................................................................5-58
5.6.48 RF Power Amplifier (RFPA)-No or Low TX Power Output (700-800 MHz)-
Part 5 of 5........................................................................................................................5-59
5.6.49 RFPA Power Control-No K9.1V (700-800 MHz) ..........................................................5-60
5.6.50 RFPA Power Control-No VGBIAS (700-800 MHz).......................................................5-61
5.6.51 RFPA Power Control-No or Low TX RFPA_CNTRL (700-800 MHz)-Part 1 of 2 .......5-62
5.6.52 RFPA Power Control-No or Low TX RFPA_CNTRL (700-800 MHz)-Part 2 of 2 .......5-63
Chapter 6 Troubleshooting Waveforms ..............................................6-1
6.1 Introduction.....................................................................................................................................6-1
6.2 XTL 1500 Waveforms.....................................................................................................................6-2
6.2.1 Power-On Reset Timing ....................................................................................................6-2
6.2.2 Power-On to Soft Turn-On Timing.....................................................................................6-2
6.2.3 Power-Down Reset ...........................................................................................................6-3
6.2.4 16.8 MHz Clock Waveform................................................................................................6-3
6.2.5 32 kHz Clock Waveform ....................................................................................................6-4
6.2.6 DSP SSI Port RX Mode.....................................................................................................6-4
6815854H01-A
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June 15, 2005