Sharp TM150 Service Manual page 38

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B
Is the signal sent to JK101 pin 1?
Is the signal sent to TP163?
Is the signal sent to the positive pole of C110?
Is the signal sent to IC103 pin 64?
Is the voltage 0.1 V or lower on R191 (IC106 pin 100 side)?
Is approx. 1.2 V applied to IC103 pin 64?
IC103 or IC106 is defective.
4. BATTERY DOSE NOT CHARGE.
Set a battery of 3.8 - 3.9 V and connect the charger.
Is the mobile light turned on red?
Set a battery of 4.0 - 4.2 V. Click the "Performance check
adjustment" button on SPST.
Click the "Temperature adjustment" button. Is the value of
"temp" normal? (Measurement tolerance: ± 5 deg.)
Click the "Battery voltage check" button. Is the voltage 4.0 -
4.2 V?
Set a battery of 3.3 - 4.2 V and start in normal mode.
Connect the charger to the external connector. Is the voltage
applied to TP537 higher than that of battery?
When the charger is inserted to the external connector, is
IC115 pin 1 at "L"?
Connect the charger to the external connector. After approx.
15 seconds, do the voltages on TP180 and TP520 increase by
more than 0.05 V?
The battery is defective, or the battery cycle is shortened.
CONFIDENTIAL
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
TM150 ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE
DRAFT
Jack JK101 is defective, or the jack plug is in a poor contact
YES
with hands free kit.
YES
L105 is defective.
YES
C110, C105, and V109 are defective.
YES
R126 is defective.
Jack JK101 is defective, or the jack plug is in a poor contact
NO
with hands free kit. (Monaural mode is set.)
NO
IC103 is defective.
CN701 and CN103 are connected improperly, and IC103 is
defective.
Does the waveform periodically change between "H" and "L"
NO
at R701?
LED702 of the mobile light is defective.
* For settings and connections for SPST, refer to the "ADJUSTMENTS,
PERFORMANCE CHECK, AND FIRMWARE UPGRADE" (see page 2-1).
TH701, TH101, and IC103 are defective. CN701 and CN103
NO
are connected improperly.
IC103 is defective.
NO
R535, R536, Q108, IC115, and IC103 are defective.
NO
IC115 is defective.
NO
R535, R536, Q108, IC115, IC103, D103, and D105 are defec-
NO
tive.
2 – 32
NO
YES