38
October 4, 2004
6809490A77-O
Troubleshooting
A1000
Troubleshooting
Table 7. 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 it is <3.25 Vdc, recharge the
battery using the appropriate charger. If it will
not recharge, replace the battery. If battery is
not at fault, proceed to b.
b) Battery terminals open or
misaligned.
Visually inspect battery terminals on both
battery and phone. Realign and, if necessary,
either replace the battery or refer to a Level 3
Service Center for battery connector
replacement. If battery terminals are not at
fault, proceed to c.
c) Transceiver board defective.
Remove transceiver board assembly.
Substitute a known good transceiver board
and temporarily reassemble the phone. Press
the PWR button; if phone turns on and stays
on, disconnect the dc power source and
reassemble phone with new transceiver
board. Verify that the fault has been cleared.
2. Telephone exhibits poor reception or
erratic operation such as calls frequently
dropping or weak or distorted audio.
a) Antenna defective.
Check connection between antenna and
transceiver board. If the connection is OK,
substitute a known good antenna. If the fault
is still present, proceed to b.
b) Transceiver board defective.
Replace transceiver board (refer to 1c). Verify
that fault has been cleared and reassemble
phone with new transceiver board.
3. Display is erratic, or provides partial or
no display.
a) Mating connections to or from
transceiver board faulty.
Check general condition of flex and flex
connector. If flex and connector are good,
check that display assembly mounting tabs
are fully engaged. If connector is not at fault,
proceed to b.
b) Transceiver board defective.
Replace transceiver board (refer to 1c). Verify
that fault has been cleared and reassemble
phone with new transceiver board.
4. Incoming call alert transducer audio
distorted or volume is too low.
Faulty transceiver board.
Replace transceiver board (refer to 1c). Verify
that fault has been cleared and reassemble
unit with new transceiver board.
5. Telephone transmit audio is weak.
(usually indicated by called parties
complaining of difficulty in hearing
voice).
a) Microphone defective.
Replace microphone as described in
procedures. If fault is not cleared, proceed to
b.
b) Transceiver board defective.
Replace transceiver board (refer to 1c). Verify
that fault has been cleared and reassemble
phone with new transceiver board.
6. Receive audio from earpiece speaker
is weak or distorted.
a) Connections to or from
transceiver board defective.
Check connection from earpiece to
transceiver board. If connection is not at fault,
proceed to b.
