Phone Jammed 1 - Nokia NHM-7 Series Troubleshooting Manual

NHM-7
Troubleshooting and Tuning Instructions

Phone jammed 1

Phone is
jammed
Measure
VIO, VCORE, FLASH1,
VANA, VR3 voltages.
Are they OK ?
Yes
Measure
32.6kHz Sleep Clk
from testpoint J404
Is it OK ?
Yes
Measure
13MHz RFClk from R420.
Is it OK ?
Yes
Measure PURX
signal from testpoint J402
Is it high (1.8V)?
Yes
Jammed
Page 2
3DJH 
Check VBATT1–6
VIO, VCORE,
FLASH1, VANA,
VR3 lines. Are
No
they OK?
Measure
No
32.6kHz Sleep Clk
from B200.
Is it OK ?
No
Measure 26MHz RFClk
from C660.
Is it OK ?
No
1RNLD &RUSRUDWLRQ
PAMS Technical Documentation
No
Yes
No
Yes
No
Yes
Check
Z260 – Z265
C260 – C265
BSI / BTEMP
lines and
VBATT lines
Check BSI /
BTEMP lines. If
OK –>
UEM regulators
are not working
Change UEM
Check B200,
C209, C210
Change UEM
Check R661,
C661, R660,
C660 if OK
change G660
Check R420,
C420 if OK
change N600
Change UEM
,VVXH