Nokia 1508i Troubleshooting Manual page 11

1508i(RM-430)
RF Description and Troubleshooting
Nokia Customer Care
Rx Troubleshooting
Rx System Block Diagram
Tx
Figure 9: Rx DC troubleshooting test points
Rx Introduction
The SA9522 is a highly integrated receiver IC based on direct down-conversion (Zero IF)
radio architecture. It can be used in CDMA mode, compliant to the CDMA standards in Band
Class 0 (cellular band) Band Class 1 (US PCS band).And Class 4 (Korean PCS band) also
supports GPS functionality. Due to ZIF architecture of the radio IC the mobile phone design
requires less external passive components and PCB area. It is fabricated using Philips
advanced QuBiC4 BiCMOS technology.
AMS Setup for Rx Troubleshooting
Put PWB on the module jig. Use the following steps to configure AMS for RF RX
troubleshooting.
1. Connect RF connector to CMU200 or 8960.
2. Connect the PWB to a PC via the Module Jig, and connect a power supply.
3. Open AMS Tools software and select RF Tool.
4. Choose CP Enable, Enable"off", then send.
5. Choose DSPM AFC Config. Set Pdm Val "0x0200", then send
6. Choose CP PLL Channel Config. Set Band "PCS", Channel "600", then send..
7. Choose DSPM Rfc Dagc Set Gain State. Set DAgc Enabled "Disable", DAgc Gain
State "Gain5"
8. Set the CMU or 8960 at 600 channel, The level set to -96dBm.
9. Choose DSPM Rfc RXTX send which will return the Received Power.
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