Nokia N900, Service Manual

Page: 50 / 202

FM radio troubleshooting .............................................................................................................................. 3–52
FM radio testing .............................................................................................................................................. 3–53
GPS troubleshooting ........................................................................................................................................... 3–53
GPS layout and basic test points ................................................................................................................... 3–53
GPS settings for Phoenix ................................................................................................................................ 3–54
Quick Test window .................................................................................................................................... 3–54
GPS control ................................................................................................................................................. 3–55
GPS failure troubleshooting .......................................................................................................................... 3–57
WLAN troubleshooting ........................................................................................................................................ 3–58
WLAN functional description ......................................................................................................................... 3–58
WLAN settings for Phoenix ............................................................................................................................ 3–58
WLAN functional tests .................................................................................................................................... 3–59
WLAN auto tuning .......................................................................................................................................... 3–62
FMTx2.1 troubleshooting .................................................................................................................................... 3–64
General ............................................................................................................................................................ 3–64
FMTx 2.1 component layout .......................................................................................................................... 3–65
Specific digital and power supply test points ............................................................................................. 3–65
FMTx2.1 specific RF test points ..................................................................................................................... 3–65
Specific clock test points ............................................................................................................................... 3–66
General visual inspection guidelines ............................................................................................................ 3–66
FMTx2.1 troubleshooting ............................................................................................................................... 3–67
FMTx2.1 antenna visual inspection troubleshooting ................................................................................. 3–68
FMTx2.1 audio path visual inspection troubleshooting ............................................................................. 3–69
FMTx2.1 Si4713 visual inspection troubleshooting .................................................................................... 3–70
Checking validity of signals ........................................................................................................................... 3–70
FMTx2.1 troubleshooting faults .................................................................................................................... 3–71
Phoenix PC tool ............................................................................................................................................... 3–71
List of Tables
Table 10 Display module troubleshooting cases ............................................................................................. 3–19
Table 11 Pixel defects ......................................................................................................................................... 3–19
Table 12 Defects table ......................................................................................................................................... 3–20
Table 13 Left and right audio self test truth table ........................................................................................... 3–74
List of Figures
Figure 11 Ambient Light Sensor ........................................................................................................................ 3–44
Figure 12 Bluetooth/WLAN antenna ................................................................................................................. 3–47
Figure 13 BT/FM component layout .................................................................................................................. 3–49
Figure 14 Bluetooth and FM radio self tests in Phoenix .................................................................................. 3–50
Figure 15 GPS layout and basic test points ....................................................................................................... 3–54
Figure 16 GPS Quick Test window ..................................................................................................................... 3–55
Figure 17 GPS Control dialogue box .................................................................................................................. 3–56
Figure 18 WLAN auto tune settings ................................................................................................................... 3–63
Figure 19 WLAN auto tune results ..................................................................................................................... 3–64
Figure 20 FMTx 2.1 Component References and Location ............................................................................... 3–65
Figure 21 FMTx panel before connection to the handset ................................................................................ 3–72
Figure 22 FMTx panel after connection to the handset ................................................................................... 3–72
Figure 23 FMTx panel in action .......................................................................................................................... 3–74
RX-51
BB Troubleshooting
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