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(From page 2-44)
A
Is 3.6 V or more applied to BATT terminal (TP520)?
Is the voltage 1.2 V or lower on SENSE terminal (TP534)?
Is there conduction through fuse (FS501)?
Is Flash memory (IC104) installed properly?
Are voltages of 2.93, 2.93, and 1.82 V applied to VMEM
(TP170), VEXT (TP110), and VCORE (TP171) respectively?
Is the waveform of signals from R169 connected to X101 (32
kHz) correct?
Are R167, R169, C174, C176, X101, and IC106 good in
appearance and mounted properly?
Is the triangular wave of 13 MHz sent from C833?
Is 2.9 V supplied from VTCXO (TP801)?
IC801 and peripheral circuits are defective.
CONFIDENTIAL
YES
YES
YES
YES
YES
YES
NO
YES
Battery terminals are defective, connector terminal is dirty, or
NO
soldering is improper.
NO
The battery is defective or set improperly.
NO
Fuse (FS501) is blown.
NO
Flash memory (IC104) is installed improperly.
IC103 is defective.
NO
X101 (32 kHz oscillator), R167, R169, C174, and C176 are
defective or mounted improperly.
NO
Or oscillating circuit of IC106 is defective.
YES
IC801 is defective.
NO
Voltage Regulator (IC804) is defective.
2 – 45
GX15
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