Phone Is Jammed - Nokia RH-34 Series Technical Documentation Manual

CCS Technical Documentation

Phone is jammed

Phone is
jammed
Measure VIO,
VCORE, VFlash1,
VANA, and VR3
voltages. Are they
OK?
YES
Measure 32kHz
Sleep Clk from test
point J974 and J975.
Is it OK?
YES
Measure 19.2MHz RF
Clk at test point
C524. Is it OK?
YES
Measure PURX
(TP16) and SleepX
(TP10). Are they high
(1.8V)?
YES
Phone is
jammed,
page 2
Issue 1 11/2003 Confidential
Check VBATT, VIO,
VCORE, VFlash1,
VANA, VR3
capacitors. Are they
OK? (See phone top
NO
view diagram for
capacitor locations)
Measure 32kHz Clk
NO
crystal. Is it OK?
Measure 19.2MHz
Clk coming from
NO
VCTCXO at C502. Is
it OK?
Check R517, R521,
and D527. Is it OK?
NO
Is PURX
OK?
YES
Is SleepX
YES
OK?
©2003 Nokia Corporation
Troubleshooting - Baseband
YES
NO
NO
YES
NO
YES
YES
NO
NO
NO
RH-34
Check BSI/BTEMP
lines and VBATT
lines. If OK, change
UEM
Repair
Change B200
Reflow or change
UEM
Check G503, C505,
C520, C503, R511,
R512, R518, R553. If
OK, change G501.
Change UPP
Repair
Change UEM
Change UPP
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