Gsm Receiver - Nokia Mobile Phones NSE-5 Series Service Manual

PAMS
Technical Documentation

GSM Receiver

Start WinTesla–Service–Software and
Select: Product
Select: Testing
RF Controls
Apply a 947.0 MHz (MID channel) –50 dBm signal to RF–connector. This
signal is tracked through RX–path and will make the troubleshooting of the
RX easier.
Path of the received GSM signal
This path defines the general route of the received signal:
Antenna, Mechanical Switch (X501), Diplexer (Z503), Duplexer (Z500),
CRFU3 (LNA N600), GSM Filter (Z600), CRFU3 (Mixer N600), SAW
71MHz Filter (Z700), SUMMA (N700), 13Mhz Filter (Z701), SUMMA,
COBBA_GJP (N200).
The related component numbe r(s) are defined inside (.).
Issue 1 07/99
Band
GSM
RX Continuous
Cont. Mode Ch: 60
Front End On
NSE–5
Troubleshooting
Page 23