Motorola V150 Service Manual page 44

Troubleshooting
Table 5. V150 Telephone: Level 1 and 2 Troubleshooting Chart (Continued)
SYMPTOM
7. Telephone will not recognize or accept
SIM card.
8. 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).
9. Vibrator feature not functioning.
44
PROBABLE CAUSE
b) Earpiece speaker defective.
c) Antenna assembly defective.
d) Transceiver board assembly
defective.
a) SIM card defective.
b) Transceiver board assembly
defective.
a) Magnet or reed switch in front
housing assembly defective.
b) Keypad board assembly defective. Replace the keypad board with a known good
c) Transceiver board assembly
defective.
a) Vibrator in rear housing assembly
defective.
b) Transceiver board assembly
defective.
August 20, 2003
VERIFICATION AND REMEDY
Remove the transceiver board assembly from
housing and insert into known good front
housing assembly. Ensure good flex connection.
Place a call and verify improvement in earpiece
audio. If fault is cleared, reassemble the phone
with the good front housing assembly. If fault is
not cleared, reinstall into the original housing
and proceed to c.
Rephase the unit and recheck the symptom. If
symptom is the same but unit rephases
correctly, 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.
Check the SIM card contacts for dirt. Clean if
necessary, and check if fault has been cleared.
If the contacts are clean, insert a known good
SIM card into the telephone. Power up the unit
and confirm that the card has been accepted. If
the fault no longer exists, replace the defective
SIM card. If the SIM card is not at fault, 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 front housing assembly with known
good one. Refer to the procedures. Place call to
phone and verify ability to answer by opening
flip. If fault is cleared, rebuild phone with new
front housing assembly. If fault is still present,
replace original front housing assembly and
proceed to b.
one. Place call to phone and verify that the fault
has been eliminated. If not, 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.
Replace rear housing assembly. If fault still
present, restore original rear housing assembly
and 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.
V150
6809471A67-O