Tx Rf Component Diagram; Tx Dc Probe Points - Nokia 6275 Rf Description And Troubleshooting

Nokia Customer Care

Tx RF Component Diagram

Following are the Tx RF components.
Tx IC SAW filter
SAW Filter

Tx DC Probe Points

Following are the Tx DC probe points of the PWB.
Tx UHF LO
Lock Voltage
1.2V
I
Q
VR2:
AGC 1
Pin 16
2.76V
0.1 to1.8V
Tx IQ inputs
approx. 1.2 V
approx. 500 mV p-p (with O'scope)
Issue 1 - September 2006
PCS Tx
PCS PA
Cell PA
Cell Tx
Figure 12: Tx RF Components of the PWB
VR6: Iref_Cell:
~2.4-3.4V
2.8V
Iref_Pcs:
2.3-2.9 V
Figure 13: Tx DC probe points
Company Confidential
6275/6275i (RM-154)
RF Description and Troubleshooting
PCS
Duplexer
Cell
Duplexer Coupler
VCC_PA:
0-4.6V
PA_DC_DC_PDM:
0-1.9 V
Power Detector Output (DCOUT)
PCS:
2.0V @ <5dBm
1.7V @ <15dBm
1.2V @ <23dBm
PCS
Diplexer Coupler
Cell Power
Detector
Cell:
2.0 V @ <5dBm
1.8 V @ <15dBm
1.4 V @ <23dBm
Page 19