Motorola T189, Руководство по обслуживанию

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1c). Verify that the fault has been cleared
and Re-assemble
the unit with the new PCB.
7. Personal telephone will not
recognize/accept SIM card
a) SIM card defective
Initially check that the contacts on the
card are not
dirty. Clean if necessary, and check if
fault has been
eliminated. If the contacts are clean, insert
a Known
good SIM card into the unit. Power up the
unit and
confirm whether or not the card has been
accepted. If
the fault no longer exists, the defective
SIM card
should be replaced. If the SIM card is not
at fault,
proceed to b.
d) Logic/RF Board
Assembly
Defective.
Replace Logic/RF Board Assembly (refer
to
symptom 1c). Verify that the fault has
been cleared
and re-assemble the unit with the new
PCB.
SYMPTOM PROBABLE CAUSE VERIFICATION AND REMEDY
9. Internal Charger not working
a) Batteries faulty Replace suspect batteries with known
good items.
Insert charger and ensure battrey charging
icon
flashes if OK, replace batteries if batteries
still do not
charge proceed to b)
a) Faulty charger circuit on
main
board defective
Replace Logic/RF Board Assembly (refer
to
symptom 1c). Verify that the fault has
been cleared
and re-assemble the unit with the new
PCB.
10. No / Weak audio when using a) Headset not fully pushed Fully ensure the ‘click’ is felt on the jack
socket. If
headset home still no audio proceed to b)
b) Faulty Jack Socket /
Defective PCB Replace Logic/RF Board Assembly (refer
to
symptom 1c). Verify that the fault has
been cleared
and re-assemble the unit with the new
PCB.
6.5 Software Upgrade