Nokia NHL-2NA Series Troubleshooting Instructions page 21
Transceiver
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Also See for NHL-2NA Series:
- Disassembly instructions manual (34 pages) ,
- Service tools (34 pages) ,
- Schematics (24 pages)
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1 Measure signal from R596. This should be 26Mhz clock signal. See figure below.
If the clock not exist, check voltage from C662, it should be 2.78V (UEM regula-
tor VR3). If voltage is OK, check G591 and other componets around it.
2 Check 13Mhz Rfclk from testpoint J100. See figure below. Offset should be
about 900mV. If the offset does not exist something is broken inside UPP_WD2
or DC-filtering capacitor in series on trace.
Issue 1 07/02
Figure 2: 26 Mhz clock
Figure 3: 13 MHz clock
¤Nokia Corporation
NHL-2NA
Page 15
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Troubleshooting
