Nokia NEM-4 Series Troubleshooting Instructions page 17
Transceivers
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Also See for NEM-4 Series:
- Disassembly instructions manual (8 pages) ,
- Service tools (22 pages)
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CCS Technical Documentation
General power checking
Use service tool FLA-41R. Battery voltage should be at least 3.6V. After phone disassem-
bly, use module jig MJS-8Q.
VBATHF,
Vbatt1-3, Vbatbb,
Vbattihf meas. from
BT voltage meas.
C301, C302 & C313
(R433)
PURX (J125)
1.8V?
Check Vcorea
and Vmema
voltages, OK?
Check sleep
(J123)
clock (J124)
32.768Khz?
Issue 1 09/2003
Company Confidential
Short circuit in Vbatt1-3,
VBATHF or BT voltage lines. Try to
Vbattbb or Vbattihf lines. Try to
find short circuit. Check
components which are able to
short cuircuit these lines,
(filtering components etc.)
See next page
Meas. from
C197, OK?
Check B190,
C196, C197
Copyright 2003 Nokia Corporation
Company Confidential
NEM-4
BB Troubleshooting
Page 6(a)-15
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Troubleshooting
