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