Nokia RM-512 - Page 74

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Figure 36 Supply point at BT & FM IC (N6000).....................................................................................................4–9

Figure 37 GSM900 RF controls window............................................................................................................. 4–11

Figure 38 GSM900 receiver troubleshooting .................................................................................................... 4–12

Figure 39 900 RX I/Q signal waveform.............................................................................................................. 4–13

Figure 40 GSM1800 RF controls window........................................................................................................... 4–14

Figure 41 GSM1800 receiver troubleshooting .................................................................................................. 4–15

Figure 42 1800 RX I/Q signal waveform............................................................................................................ 4–16

Figure 43 RX measurements point of the control voltages to FEM N7700.................................................... 4–16

Figure 44 Measurement points at the RX SAW Filters – Z7600/Z7602 ........................................................... 4–17

Figure 45 RX I/Q signals...................................................................................................................................... 4–17

Figure 46 GSM 900 RF controls window............................................................................................................ 4–19

Figure 47 GSM900 tarnsmitter troubleshooting .............................................................................................. 4–20

Figure 48 TX I/O signal........................................................................................................................................ 4–21

Figure 49 VC1, VC3 signals .................................................................................................................................. 4–21

Figure 50 TXP signal............................................................................................................................................ 4–22

Figure 51 TXC signals at PCL5 ............................................................................................................................. 4–22

Figure 52 TXC signals at PCL19........................................................................................................................... 4–23

Figure 53 GSM 1800 RF controls window.......................................................................................................... 4–24

Figure 54 GSM1800 transmitter troubleshooting ............................................................................................ 4–25

Figure 55 TX I/O signal........................................................................................................................................ 4–26

Figure 56 VC1, VC2, VC3 signals .......................................................................................................................... 4–26

Figure 57 TXP signal............................................................................................................................................ 4–27

Figure 58 TXC signals at PCL0 ............................................................................................................................. 4–27

Figure 59 TXC signals at PCL15........................................................................................................................... 4–28

Figure 60 GSM850 RF controls window............................................................................................................. 4–29

Figure 61 GSM850 receiver troubleshooting .................................................................................................... 4–30

Figure 62 850 RX I/Q signal waveform.............................................................................................................. 4–31

Figure 63 GSM 1900 RF controls window.......................................................................................................... 4–32

Figure 64 GSM1900 receiver troubleshooting .................................................................................................. 4–33

Figure 65 1900 RX I/Q signal waveform............................................................................................................ 4–34

Figure 66 RX measurements point of the control voltages to FEM N7700.................................................... 4–34

Figure 67 Measurement points at the RX SAW Filters – Z7600/Z7602 ........................................................... 4–35

Figure 68 RX I/Q signals...................................................................................................................................... 4–35

Figure 69 GSM 850 RF controls window............................................................................................................ 4–37

Figure 70 GSM850 transmitter troubleshooting .............................................................................................. 4–38

Figure 71 TX I/O signal........................................................................................................................................ 4–39

Figure 72 VC1, VC3 signal.................................................................................................................................... 4–39

Figure 73 TXP signal............................................................................................................................................ 4–40

Figure 74 TXC signals at PCL5 ............................................................................................................................. 4–40

Figure 75 TXC signals at PCL19........................................................................................................................... 4–41

Figure 76 GSM 1900 RF controls window.......................................................................................................... 4–42

Figure 77 GSM1900 transmitter troubleshooting ............................................................................................ 4–43

Figure 78 TX I/O signal........................................................................................................................................ 4–44

Figure 79 VC1, VC2, VC3 signals .......................................................................................................................... 4–44

Figure 80 TXP signal............................................................................................................................................ 4–45

Figure 81 TXC signals at PCL0 ............................................................................................................................. 4–45

Figure 82 TXC signals at PCL15........................................................................................................................... 4–46

Figure 83 VCXO 26 MHz waveform..................................................................................................................... 4–47

Figure 84 PLL Troubleshooting diagram........................................................................................................... 4–48

Figure 85 Measurement points for VCXO........................................................................................................... 4–49

Figure 86 Phoenix settings................................................................................................................................. 4–50

Figure 87 FM circuit troubleshooting diagram................................................................................................. 4–51

RM-512; RM-513; RM-514; RM-515; RM-543

RF Troubleshooting Instructions

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