Nokia N72, Service Manual

Page: 112 / 302

List of Figures
Figure 38 Main troubleshooting tree ................................................................................................................... 6–6
Figure 39 SysCLK from C7528 & C7531 ............................................................................................................... 6–12
Figure 40 SleepCLK from R7558 .......................................................................................................................... 6–13
Figure 41 Flashing pic 1. Take single trig measurement for the rise of the BSI signal. ................................ 6–18
Figure 42 Flashing pic 2. Take single trig measurement for the rise of the BSI signal. ................................ 6–18
Figure 43 CMT SDRAM CLK from pin J2806 .......................................................................................................... 6–19
Figure 44 NOR CLK from J2813 ............................................................................................................................ 6–22
Figure 45 COMBO NAND in boot pic 1. ............................................................................................................... 6–24
Figure 46 USB 1: D-TXD (POP-PORT pin6) and D+RXD (POP-PORT pin7) voltage levels when USB connected.
..................................................................................................................................................................... 6–27
Figure 47 USB 2: Take single triggered measurement on the rising edge of the Helen usb0_txen (J4813)
line. .............................................................................................................................................................. 6–28
Figure 48 SIM interface signals ........................................................................................................................... 6–30
Figure 49 MMC card initialization ....................................................................................................................... 6–31
Figure 50 Data transfer ........................................................................................................................................ 6–33
Figure 51 Ambient Light Sensor Calibration window ....................................................................................... 6–47
Figure 52 BER test result ...................................................................................................................................... 6–52
Figure 53 Bluetooth self tests in Phoenix .......................................................................................................... 6–53
Figure 54 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is
connected. .................................................................................................................................................. 6–60
Figure 55 Differential output waveform of the Ext_in_IHF_out out loop measurement when speaker is
connected. .................................................................................................................................................. 6–60
Figure 56 Single-ended output waveform of the HP_in_Ext_out loop when microphone is connected. ...
6–61
RM-180
Nokia Customer Care BB Troubleshooting and Tuning Guide
Page 6 –4 COMPANY CONFIDENTIAL Issue 1
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