Nokia RM-42 Service Manual page 423

RM-42
System Module Nokia Customer Care
Figure 107 General diagram of the main LCD display module.......................................................................................9–20
Figure 108 LoSSi signals in RM-42...........................................................................................................................................9–21
Figure 109 General diagram of the sub-display module.................................................................................................9–22
Figure 110 ALS HW implementation.......................................................................................................................................9–25
Figure 111 Audio block diagram..............................................................................................................................................9–27
Figure 112 Internal microphone circuitry.............................................................................................................................9–27
Figure 113 External microphone circuitry (Pop-Port connects to the right side)....................................................9–28
Figure 114 Internal earpiece circuitry....................................................................................................................................9–28
Figure 115 Internal speaker circuitry.....................................................................................................................................9–29
Figure 116 External earpiece circuitry (Pop-Port connected on the right)................................................................9–30
Figure 117 External audio connector.....................................................................................................................................9–30
Figure 118 Charger connector..................................................................................................................................................9–35
Figure 119 Battery connector...................................................................................................................................................9–36
Figure 120 Keyboard connector...............................................................................................................................................9–37
Figure 121 Fold unit connector................................................................................................................................................9–39
Figure 122 Connections between fold unit and engine board......................................................................................9–40
Figure 123 WCDMA transmitter................................................................................................................................................9–48
Figure 124 Block diagram of DCDC converter and WCDMA PA........................................................................................9–49
Figure 125 GSM transmitter.......................................................................................................................................................9–50
Figure 126 GSM/EDGE power control topology and control signals.............................................................................9–51
Figure 127 Power control signal usage in GSM (GMSK) and EDGE (8PSK) transmission..........................................9–52
Figure 128 Phase locked loop in N7500 and N7501 (PLL)...............................................................................................9–53
Figure 129 RF supply connections from the BB mixed mode ASIC................................................................................9–54
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