User Guide

NPE-4
6 - Troubleshooting PAMS Technical Documentation
Page 6-6 ãNokia Corporation. Original
Phone is dead
L260 towards SIM connector,
VBAT = 3.6 VDC
Yes
Failure in VBAT
line, check:
X101, X102
No
L261 towards C261,
L262 towards C262,
L265 towards C265
voltage = 3.6 VDC
Yes
Check:
L261,L262,L263,
C261,C262,C265
No
Pin 2 and 4 on S300 = 0 VDC
when powerkey pressed
Yes
Check:
S300, PWB
No
PURX = 1.8 VDC on V130
(Bluetooth module) pin44
~1 sec. after power key is
pressed
Yes
Check:
D200, PWB
No
Yes
VR3 ~2.78 VDC on C295
towards D200 (UEM)
Check:
D200,C295,PWB
No
13 MHz clock min 300
mVACpp on C424 towards
D200 with regular probe Cin
~10-13 pF/10M
Check:
C424,C425,L420,
C420,R420,N600
(HAGAR)
Yes
No
Check:
D400 (UPP),D450 (FLASH)
Yes
Sleep clock on J404
~32.768 Hz, 1.8 Vpp
Check:
B200,C209,C210,
D200,PWB
Yes
No