Phone Is Totally Dead - Nokia NPD-1 Series Troubleshooting - Bb

NPD-1
Troubleshooting — BB

Phone is totally dead

Phone is
dead
Phone current is
zero or too high?
Phone current is <
30 m A
Phone current is
<= 35 m A
Is phone in LOCA L
MODE ?
OK restart
Page 28
Yes
No
Yes
No
No
Yes
Check BSI line
No
R203, C230 are
Yes
Nokia Corporation
CCS Technical Documentation
- If current is zerro check X110
solder and VBATT lines
-If current is too high check for
shorts
- Make sure all BB regulators are at
their respective voltage levels like
VANA, VIO , VCORE(DC-DC),
VFlash1, and VR3. See phones top
view diagram for test points.
- Make sure the System Clk is
19.2MHz and that the Sleep Clk is
32KHz
- Also m ake sure PURX and SleepX
signals are high (1.8V).
Yes
Is phone flash
program ing OK ?
No
Yes
X110, R202,
they OK
No
Confidential
Change UEM
Repair
Issue 1 11/2002