Pcs Transmitter - Nokia RH-3 Series Troubleshooting - Rf

RH-3
Troubleshooting - RF

PCS Transmitter

PCS Transmitter Path
The following table indicates the test points to probe when troubleshooting the PCS
transmitter path. The steps shown are the recommended but do not have to be followed
in order. Refer to the Appendix for a reference diagram that illustrates the test points on
the circuit board. An HP high-frequency probe is used to make the frequency and output
power measurements.
Setup:
Mode Tx
Local On
Chnn
384
600
PCS TX
Step
Part Part Ref
#
1 Jedi Pin 7
Page 14
Detector Reference and DC Supply
Label Test Point
Constant Reference
Values
PCS Oscillator and IF:
VHF Tx Lo
527.2
VHF Rx Lo
367.2
Rx Band
On PCS/CELL
Tx Freq Rx Freq
836.52 881.52
1880 1960
Label Test Point
I+ J601
Nokia Corporation
CCS Technical Documentation
Typical
Value
VDC
Tx IF
263.6
Rx IF
183.6
CW or
BB GenIO
CDMA
CDMA GenIO 8 = H
UHF GenIO 12 = L
1065.12 GenIO 13 = L
2143.6
Typical
Units
Value
0.1 to 0.9, VAC, VDC
1.7
Confidential
PDM Rho
Tx IF and On
RF AGC = 0
Comments
Issue 1 06/2003