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Figure 32 Supply point at BT & FM IC (N6000).....................................................................................................4–9

Figure 33 GSM900 RF controls window............................................................................................................. 4–11

Figure 34 GSM900 receiver troubleshooting .................................................................................................... 4–12

Figure 35 900 RX I/Q signal waveform.............................................................................................................. 4–13

Figure 36 GSM1800 RF controls window........................................................................................................... 4–14

Figure 37 GSM1800 receiver troubleshooting .................................................................................................. 4–15

Figure 38 1800 RX I/Q signal waveform............................................................................................................ 4–16

Figure 39 RX measurements point of the control voltages to FEM N7700.................................................... 4–16

Figure 40 Measurement points at the RX SAW Filters – Z7600/Z7602 ........................................................... 4–17

Figure 41 RX I/Q signals...................................................................................................................................... 4–17

Figure 42 GSM 900 RF controls window............................................................................................................ 4–18

Figure 43 GSM900 tarnsmitter troubleshooting .............................................................................................. 4–19

Figure 44 TX I/O signal........................................................................................................................................ 4–20

Figure 45 VC1, VC3 signals .................................................................................................................................. 4–20

Figure 46 TXP signal............................................................................................................................................ 4–21

Figure 47 TXC signals at PCL5 ............................................................................................................................. 4–21

Figure 48 TXC signals at PCL19........................................................................................................................... 4–22

Figure 49 GSM 1800 RF controls window.......................................................................................................... 4–23

Figure 50 GSM1800 transmitter troubleshooting ............................................................................................ 4–24

Figure 51 TX I/O signal........................................................................................................................................ 4–25

Figure 52 VC1, VC2, VC3 signals .......................................................................................................................... 4–25

Figure 53 TXP signal............................................................................................................................................ 4–26

Figure 54 TXC signals at PCL0 ............................................................................................................................. 4–26

Figure 55 TXC signals at PCL15........................................................................................................................... 4–27

Figure 56 GSM850 RF controls window............................................................................................................. 4–28

Figure 57 GSM850 receiver troubleshooting .................................................................................................... 4–29

Figure 58 850 RX I/Q signal waveform.............................................................................................................. 4–30

Figure 59 GSM 1900 RF controls window.......................................................................................................... 4–31

Figure 60 GSM1900 receiver troubleshooting .................................................................................................. 4–32

Figure 61 1900 RX I/Q signal waveform............................................................................................................ 4–33

Figure 62 RX measurements point of the control voltages to FEM N7700.................................................... 4–34

Figure 63 Measurement points at the RX SAW Filters – Z7600/Z7602 ........................................................... 4–34

Figure 64 RX I/Q signals...................................................................................................................................... 4–35

Figure 65 GSM 850 RF controls window............................................................................................................ 4–36

Figure 66 GSM850 transmitter troubleshooting .............................................................................................. 4–37

Figure 67 TX I/O signal........................................................................................................................................ 4–38

Figure 68 VC1, VC3 signal.................................................................................................................................... 4–38

Figure 69 TXP signal............................................................................................................................................ 4–39

Figure 70 TXC signals at PCL5 ............................................................................................................................. 4–39

Figure 71 TXC signals at PCL19........................................................................................................................... 4–40

Figure 72 GSM 1900 RF controls window.......................................................................................................... 4–41

Figure 73 GSM1900 transmitter troubleshooting ............................................................................................ 4–42

Figure 74 TX I/O signal........................................................................................................................................ 4–43

Figure 75 VC1, VC2, VC3 signals .......................................................................................................................... 4–43

Figure 76 TXP signal............................................................................................................................................ 4–44

Figure 77 TXC signals at PCL0 ............................................................................................................................. 4–44

Figure 78 TXC signals at PCL15........................................................................................................................... 4–45

Figure 79 VCXO 26 MHz waveform..................................................................................................................... 4–46

Figure 80 PLL Troubleshooting diagram........................................................................................................... 4–47

Figure 81 Measurement point for VCXO ............................................................................................................ 4–48

Figure 82 Phoenix settings................................................................................................................................. 4–49

Figure 83 FM circuit troubleshooting diagram................................................................................................. 4–50

RM-340; RM-341

RF Troubleshooting Instructions

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