Motorola MOTORIZR Z8, Руководство по обслуживанию

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6809510A67-O June 07, 2007 27
Level 1 and 2 Service Manual Troubleshooting
3. Display is erratic, or provides partial or
no display. a) Transceiver board connections
faulty. Remove rear chassis assembly from unit, check
general condition of flexible printed cable (flex).
If the flex is good, check that the flex connector
is fully pressed down. If not, check connector to
transceiver board connections. If faulty
connector, replace the transceiver board
assembly. If connector is not at fault, proceed to
b.
c) Transceiver board assembly
defective. Forward to an authorized level 3 service center.
4. Incoming call alert transducer audio
distorted or volume is too low. Faulty transceiver board assembly. Replace the transceiver board assembly (refer
to 1c). Verify that the fault has been cleared and
reassemble the unit with the new transceiver
board assembly.
5. Telephone transmit audio is weak.
(usually indicated by called parties
complaining of difficulty in hearing voice). a) microphone obstructed by user
while holding the phone Verify transmit audio quality. If transmit audio
quality is still weak and microphone is not
obstructed, proceed to b.
b) Microphone defective. Replace the microphone as described in the
procedures. If fault is not cleared, proceed to c.
c) Transceiver board defective. Forward to an authorized level 3 service center.
6. Receive audio from earpiece speaker is
weak or distorted. a) Connections to or from transceiver
board assembly defective. Gain access to the transceiver board assembly
as described in the procedures. Check flex and
the flex connector to the transceiver board
assembly. If flex connector is at fault, proceed to
d. If connection is not at fault, proceed to b.
b) Antenna assembly defective. Check to make sure the antenna is installed
correctly. If the antenna is installed correctly,
substitute a known good antenna assembly. If
this does not clear the fault, reinstall the original
antenna assembly and proceed to d.
c) Transceiver board assembly
defective. Forward to an authorized level 3 service center.
7. Telephone will not recognize or accept
SIM. a) SIM defective. Check the SIM contacts for dirt. Clean if
necessary and check if fault has been cleared. If
the contacts are clean, insert a known good SIM
into the telephone. Power up the unit and
confirm that the SIM has been accepted. If the
fault no longer exists, replace the defective SIM.
If the SIM is not at fault, proceed to b.
b) Transceiver board assembly
defective. Forward to an authorized level 3 service center.
8. Vibrator feature not functioning. Transceiver board assembly
defective. Forward to an authorized level 3 service center.
9. Internal Charger not working. Faulty charger circuit on transceiver
board assembly. Test a selection of batteries in the rear pocket of
the desktop charger. Check LED display for the
charging indications. If these are charging
properly, then the internal charger is at fault.
Replace the transceiver board assembly (refer
to 1c). Verify that the fault has been cleared and
reassemble the unit with the new transceiver
board assembly.
Table 3. : Level 1 and 2 Troubleshooting Chart (Continued)
SYMPTOM PROBABLE CAUSE VERIFICATION AND REMEDY