Troubleshooting A1000
Troubleshooting
Table 7. Level 1 and 2 Troubleshooting Chart
SymptomProbable CauseVerification and Remedy
1. Telephone will not turn on or stay on.a) Battery either discharged or Measure battery voltage across a 50 ohm (>1
defective.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 Visually inspect battery terminals on both
misaligned.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 a) Antenna defective.Check connection between antenna and
erratic operation such as calls frequently transceiver board. If the connection is OK,
dropping or weak or distorted audio.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 a) Mating connections to or fromCheck general condition of flex and flex
no display.transceiver board faulty.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 Faulty transceiver board. Replace transceiver board (refer to 1c). Verify
distorted or volume is too low.that fault has been cleared and reassemble
unit with new transceiver board.
5. Telephone transmit audio is weak. a) Microphone defective.Replace microphone as described in
(usually indicated by called parties procedures. If fault is not cleared, proceed to
complaining of difficulty in hearing b.
voice).
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 a) Connections to or from Check connection from earpiece to
is weak or distorted.transceiver board defective.transceiver board. If connection is not at fault,
proceed to b.
38 October 4, 2004 6809490A77-O |
ACEC
