Tx Uhf Lo - Nokia 2125 Troubleshooting Manual

Nokia Customer Care
Figure 31 shows the Rx VHF LO test points.
Table 12 gives the description and values for the test points as shown in
Test
Point
1
2
3

Tx UHF LO

There are two fixed LOs: 3296.16~3395.88 MHz for Cell band and 3700~3819.90 MHz
for PCS band. This is the first LO for up-conversion. Monitor the control voltage at
C7014. At this control voltage, the N7000 LO is locked and should be between 1.2 and
1.8 VDC.
ISSUE 1 08/2005
1
Figure 31: Rx VHF LO test points
Table 12: Rx VHF LO Test Points
Description
RX LO lock voltage
VR7
VR5
©2005 Nokia Corporation
2125/2125i/2126/2126i/2128i (RH-71)
RF Description and Troubleshooting
2 3
Value
1.2 to 1.7 VDC
2.8V
2.8V
Company Confidential
Figure 31.
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