Nokia 2630 RM-298 - Page 74

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-298; RM-299
RF Troubleshooting Instructions
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