Motorola C380 Manuel d'entretien - Page 39

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Motorola C380 Manuel d'entretien
Level 1 and 2 Service Manual
Table 4. Manual Test Commands (Continued)
Key Sequence
55*2*004
Test Display. Border pixels ON
*#06#
IMEI Check
Phone Set up -->
Flex Version / Technology / S-W Version / Readiness Status
Phone Status -->
Other
Information

Troubleshooting Chart

Table 5. Level 1 and 2 Troubleshooting Chart
Symptom
1. Telephone will not turn on or stay on.
2. Telephone exhibits poor reception or
erratic operation such as calls frequently
dropping or weak or distorted audio.
3. No display.
4. Incoming call alert transducer audio
distorted or volume is too low.
5. Telephone transmit audio is weak.
(usually indicated by called parties
complaining of difficulty in hearing voice).
6. Receive audio from earpiece speaker is
weak or distorted.
6809485A73-O
Test Function/Name
Probable Cause
a) Battery either discharged or
defective.
b) Transceiver board defective.
a) Antenna defective
b) Transceiver board defective.
a) Connections between transceiver
and front Endo faulty.
b) Display module defective.
a) Faulty back Endo.
b) Transceiver board defective
a) Microphone defective on the front
Endo.
b) Transceiver board defective.
a) Spring contacts between front
Endo earpiece speaker and
transceiver board faulty.
May 14, 2004
Remarks
No Test Mode Required
No Test Mode Required
Verification And Remedy
Measure the voltage at TP_BATT+ with battery
attached. If voltage is below 3.0V, attach a
charger to the phone and ensure that the phone
is charging. If the phone does not charge,
change the battery and repeat the measurement
charging procedure. If the phone still does not
turn on, proceed to b).
Replace the faulty board with a known good
transceiver board. If the phone powers up after
replacement, reassemble the phone with a new
transceiver board. Verify that the fault is fixed.
Check connection between the antenna and the
transceiver board. If the contact is intermittent
visually, replace with a known good back Endo.
If the fault is still present, proceed to b.
Replace with a known good transceiver board
(refer to 1c). Verify that the fault has been
cleared with the new transceiver board and
reassemble the unit.
Check connections between transceiver board
and display. If display still does not come up,
proceed to b.
Replace with a known good display module.
Verify that the fault has been cleared with the
new display module and reassemble the unit.
Replace the back Endo with a known good back
Endo. If the problem goes away, replace with a
new back Endo. Else proceed to b.
Replace with a known good transceiver board
(refer to 1c). Verify that the fault has been
cleared with a new transceiver board.
Replace the microphone or the front Endo as
described in the procedures. If fault is not
cleared, proceed to b.
Replace the transceiver board (refer to 1c).
Verify that the fault has been cleared and
reassemble the unit with the new transceiver
board.
Replace the front Endo with a known good one.
Reassemble with a new front Endo if the fault
goes away. If the fault is still present, proceed to
b.
Troubleshooting
39