34
March 28, 2007
6809511A67-O
Troubleshooting
Troubleshooting
Troubleshooting Chart
Table 3. : 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 battery voltage across a 50 ohm (>1
Watt) load. If the battery voltage is <3.4 Vdc,
recharge the battery using the appropriate
battery charger. If the battery will not recharge,
replace the battery. If battery is not at fault,
proceed to b.
b) Battery connectors open or
misaligned.
Visually inspect the battery connectors on both
the battery and the telephone. Realign and, if
necessary, either replace the battery or refer to
a Level 3 Service Center for the battery
connector replacement. If battery connectors
are not at fault, proceed to c.
c) Transceiver board assembly
defective.
Forward to an authorized level 3 service center.
2. Telephone exhibits poor reception or
erratic operation such as calls frequently
dropping or weak or distorted audio.
a) Antenna assembly defective.
Check to make sure that the antenna pin is
properly connected to the transceiver board
assembly. If connected properly, substitute a
known good antenna. If the fault is still present,
proceed to b.
b) Transceiver board assembly
defective.
Forward to an authorized level 3 service center.
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.
b) 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 from the front assembly to the
transceiver board assembly. If flex is at fault,
replace front housing assembly. If flex connector
is at fault, proceed to d. If connection is not at
fault, proceed to b.
