Sharp TQ-GX30E Service Manual page 57

Is 3.6 V or more applied to BATT terminal (TP520)?
Is the voltage 1.2 V or lower on SENSE terminal (TP506)?
Is there conduction through fuse (FS501)?
Is 5-level stack memory (IC101) installed properly?
Is 2.8 V and 1.8 V applied to VMEM (TP170) and VCORE
(TP171) respectively?
Is 3.0 V applied to VINT (TP173)?
Is the waveform of signals from R169 connected to X101 (32
kHz) correct? Are R167, R169, R174A, C176, X101, and
IC106 good in appearance and mounted properly?
Is the rectangular wave of 13 MHz properly sent to TP713?
Is the triangular wave of 13 MHz sent from C833?
Is 2.9 V supplied from VTCXO (TP801)?
IC801 and peripheral circuits are defective.
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CONFIDENTIAL
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
5-level stack memory (IC106) is installed improperly.
IC103 is defective.
NO
NO
IC111 is defective.
X101 (32 kHz oscillator), R167, R169, C174, and C176 are
NO
defective or mounted improperly.
Or oscillating circuit of IC106 is defective.
IC106, R179, and R110A are defective or mounted improperly.
YES
CN701 and CN102 are connected improperly.
YES
IC801 is defective.
NO
Power Supply (IC804) is defective.
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GX30