Motorola E815 Service Manual page 39

Level 2 Service Manual
Table 2. Level 1 and 2 Troubleshooting Chart (Continued)
Symptom
6. Receive audio from earpiece speaker is
weak or distorted.
7. Phone does not sense when flip is
opened or closed (usually indicated by
inability to answer incoming calls by
opening the flip, or inability to make
outgoing calls).
8. Vibrator feature not functioning.
9. Internal Charger not working.
11. No or weak audio when using headset. a) Headset not fully pushed home.
6809492A18-B
Probable Cause
b) Microphone defective.
c) Transceiver board assembly
defective.
a) Connections to or from
transceiver board assembly
defective.
b) Flip assembly defective.
c) Antenna assembly defective.
d) Transceiver board assembly
defective.
a) Flip assembly defective.
b) Transceiver board assembly
defective.
Transceiver board assembly
defective.
Faulty charger circuit on
transceiver board assembly.
b) Faulty jack socket on transceiver
board assembly.
January 24, 2006
Verification and Remedy
Gain access to microphone. Disconnect and
substitute a known good microphone. Place a
call and verify improvement in transmit signal as
heard by called party. If good, reassemble with
new microphone. If microphone is not at fault,
reinstall original microphone and proceed to c.
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.
Gain access to the transceiver board assembly as
described in the procedures. Check flex and the
flex connector from the flip assembly to the
transceiver board assembly. If flex is at fault,
replace flip assembly. If flex connector is at fault,
proceed to d. If connection is not at fault, proceed
to b.
Temporarily replace the flip assembly with a known
good assembly. If fault has been cleared,
reassemble with the new flip assembly. If fault not
cleared, proceed to c.
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.
Replace the transceiver board assembly (refer to
1c). Verify that the fault has been cleared and
reassemble with the new transceiver board
assembly.
Temporarily replace the flip assembly with a known
good assembly. If fault has been cleared,
reassemble with the new flip assembly. If fault not
cleared, proceed to b.
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.
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.
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.
Ensure the headset plug is fully seated in the jack
socket. If fault not cleared, proceed to b.
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.
Troubleshooting
39