Power Doesn't Stay On Or The Phone Is Jammed - Nokia RH-17 Series Troubleshooting - Bb

CCS Technical Documentation

Power doesn't stay on or the phone is jammed

Phone is
jammed
Measure VIO,
VCORE, Vflash1,
VANA, and VR3
votages. Are they
OK ?
Yes
Measure 32kHz
Sleep Clk from
testpoint .
Is it OK?
Yes
Measure
19.2MHz RF Clk at
testpoint J499.
Is it OK?
Yes
Measure PURX
and SleepX at test
points J402 and
J403. Are they
high (1.8V) ?
Yes
Jammed
page 2
Issue 1 04/2003
Check VBATT,
VIO, VCORE, VFlash1,
VANA, VR3 capacitors.
Are they OK ?
See phones top view
diagram for cap
location.
No
Measure the
No
32kHz Clk crystal.
Is it OK?
Yes
No
Measure
the 19.2MHz Clk
coming from the
VCTCXO at C524.
Is it OK ?
No
Yes
Nokia Corporation
Troubleshooting — BB
Check BSI/BTEMP
Yes
lines and VBATT lines
if OK re-flow or change
No
No
Change B200
Re-flow or Change
Check G501, C505,
C520, C502, C523,
C525, C524, R511,
No
R510, R512, R520,
R521, R522, R517,
R518, C503, V500.
If OK change G501
Change UPP
Change UEM
Confidential
RH-17
UEM
Repair
UEM
Page 37