Motorola C330, Руководство по обслуживанию

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6881040B65 August 20, 2002 37
Level 3 Service Manual Troubleshooting
Troubleshooting Chart
55*2*003 Test Display. Checkerboard pattern B
55*2*004 Test Display. Border pixels ON
*#06# IMEI Check No Test Mode Required
Phone Set up -->
Phone Status -->
Other
Information
Flex Version / Technology / S-W Version / Readiness Status No Test Mode Required
Table 3. PF 0C35 Telephone: Level 1 and 2 Troubleshooting Chart
Symptom Probable Cause Verification And Remedy
1. Telephone will not turn on or stay on. a) Battery either discharged or
defective. Measure the voltage at 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).
b) Battery connector P800 opened or
misaligned. Inspect battery connector P800 for any
mechanical failure. Apply short/open circuit test
using multi-meter if appropriate. If battery
connector is OK, proceed to c).
c) Transceiver board defective. 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.
2. Telephone exhibits poor reception or
erratic operation such as calls frequently
dropping or weak or distorted audio. a) Antenna defective 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.
b) Transceiver board defective. 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.
3. Display is erratic, or provides partial or
no display. a) Elastomeric connections between
transceiver and front Endo faulty. Replace the front Endo with a known good one.
If display still does not come up, proceed to b.
b) Transceiver board defective. 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.
4. Incoming call alert transducer audio
distorted or volume is too low. a) Faulty back Endo. 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.
b) Transceiver board defective Replace with a known good transceiver board
(refer to 1c). Verify that the fault has been
cleared with a new transceiver board.
5. Telephone transmit audio is weak.
(usually indicated by called parties
complaining of difficulty in hearing voice). a) Microphone defective on the front
Endo. Replace the microphone or the front Endo as
described in the procedures. If fault is not
cleared, proceed to b.
Table 2. Manual Test Commands (Continued)
Key Sequence Test Function/Name Remarks