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802SH
5. System settings are reset.
Is TP1217 at high level (2.75 V) when the
Power key is pressed with 3.7 V applied to the
battery terminals (VBATT:TP:1200, TP1201,
and TP1202)?
YES
Is the resistance between GND (TP1210) and
TP1207 82 k ohms?
YES
Is the USIM card recognised?
YES
Are the battery terminals clean?
YES
The software has a problem, or IC1100 parts
are defective.
6. Clock settings are reset.
Is 1.8 V applied to TP1223 with 3.7 V applied to
the battery terminal (TP1200)?
YES
Is 1.0 V or more on TP1226 with the battery ter-
minal (TP1200) disconnected?
YES
Is 1.0 V or more on TP1223 with the battery ter-
minal (TP1200) disconnected?
YES
Is 1.5 V applied to TP1003 with 3.7 V applied to
the battery terminal (TP1200)?
YES
IC1000 is defective
CONFIDENTIAL
Is 1.8 V applied to TP1231?
NO
Is 2.75 V applied to TP1232,TP1233 and
TP1234?
IC1200 is defective.
Is there conduction between the battery termi-
NO
nals and TP1207?
IC1200 or the battery is defective.
Connection to the USIM card is instantaneously
NO
interrupted.
Connection to the battery terminal is instanta-
NO
neously interrupted.
IC1206, C1239 and R1247 are defective or
NO
mounted improperly.
Is the voltage of the back-up battery 1.0 V or
NO
more?
Is 1.0 V or more on TP3019?
CN3001 and CN1501 are defective, or the thin
coaxial is broken.
IC1204 or peripheral circuits are defective or
NO
short-circuited. IC1206 is defective.
IC1204 is defective or mounted improperly
NO
2 – 28
NO
YES
NO
YES
NO
YES
NO
YES
Go to the section
"3. Power dose not
turn on."
(see page 2-26)
Battery terminal
(CN1200) is mounted
improperly.
The back-up battery is
defective or deterio-
rated, or earth short
circuit.
The back-up battery is
mounted improperly.
The flexible PWB is
broken
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