Baseband Troubleshooting; Baseband Testpoints; Fault Finding Charts - Nokia NHM-8NX Series Troubleshooting Instructions

PAMS Technical Documentation

Baseband Troubleshooting

Baseband Testpoints

Baseband testpoint PWB Placement
J416
EXTWRX
-
J419
FLSCLK
-
J420
FLSCSX
-
J417
EXTRDX
-
J418
FLS2CSX
-
J414
J425
DBUSDA
RFCLK
-
J402
PURX
4
-
GND
J413
DBUSEN1X
-
6
J404
SIM I/O
SLEEPCLK
-
J410
J408
MBUSRX
CBUSENX
3
-
J406 VSIM
CBUSCLK
2
-
RST
J407
CBUSDA
1
-
CLK
J412
FBUSRX
J150
HOOKINT
R310
KLIGHT
R166
MICB2

Fault Finding Charts

In this section, fault finding charts are provided for the most common NHM-8NX errors.
NOTE : Since both D200 (UEM) and D400(UPP) is underfilled, they can not be
replaced. If either D200 or D400 is defective, the whole PWB has to be dis-
Issue 1 05/02
R306 C230
DLIGHT VREFRF02
J403
SLEEPX
C156
MIC2P
C155
MIC2N
ãNokia Corporation
Troubleshooting Instructions
C231 C222 C225
VREFRF01 VR4 VR6
J413
DBUSCLK
J405
UEMINT
C218
VIO
J411
FBUSTX
J409
MBUSTX
NHM-8NX
C226
VR5
C223
VR2
C227
VR3
C224
VR7
C208
VCORE
C206
VANA
C205
VFLASH1
R183/1
HFCM
R183/2
HF
C157
HEADINT
PRODTP6
VPP
PRODTP7
MBUS
PRODTP2
FBUS TX
PRODTP3
FBUS RX
R161/1
EARP
R161/2
EARN
R164
MIC1N
R164
MIC1P
R165
MICB1
C100
VCHARIN
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