Troubleshooting Chart - Motorola C330 Service Manual

Level 3 Service Manual
Table 2. Manual Test Commands (Continued)
Key Sequence
55*2*003 Test Display. Checkerboard pattern B
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 3. PF 0C35 Telephone: 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. Display is erratic, or provides partial or
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).
6881040B65
Test Function/Name
Probable Cause
a) Battery either discharged or
defective.
b) Battery connector P800 opened or
misaligned.
c) Transceiver board defective.
a) Antenna defective
b) Transceiver board defective.
a) Elastomeric connections between
transceiver and front Endo faulty.
b) Transceiver board defective.
a) Faulty back Endo.
b) Transceiver board defective
a) Microphone defective on the front
Endo.
August 20, 2002
Troubleshooting
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).
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).
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.
Replace the front Endo with a known good one.
If display still does not come up, 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.
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.
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