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Symptom
1. Phone will not turn on
or stay on.
2. Phone exhibits poor
reception and/or erratic
operation (such as calls
frequently dropping, weak
and/or distorted audio,
etc.)
71
Probable Cause
a) Battery either discharged or
defective.
b) Battery connector open
or misaligned.
c) Keypad membrane defec-
tive.
d) Keypad board defective.
e) RF/Audio-Logic Board
defective.
a) Defective antenna or
damaged antenna connector.
b) Defective RF/ Audio-Logic
Board.
Verification and Remedy
1. Measure battery voltage across a 50 ohm (>1 Watt) load.
2. If the battery voltage is <3.4 V DC, recharge the battery
using the appropriate battery charger.
3. If the battery will not recharge, replace the battery.
1. Visually inspect the battery connectors on both the battery
pack and the transceiver, including the solder connections
from the battery connector to the main PC board.
2. Realign the contacts or, if necessary, replace either the bat-
tery or battery connector.
1. Replace the keypad membrane with a known good part.
2. Temporarily connect +6 V DC to the battery contacts.
3. Depress the PWR button; if unit turns on and stays on, dis-
connect the power source and reassemble the phone with the
new keypad membrane.
1. Replace keypad board assembly with a known good assem-
bly.
2. Temporarily connect +6 V DC to the battery contacts.
Depress the PWR button.
3. If the units turns on and stays on, discon-nect the power
source and reassemble the phone with the new keypad board
assembly.
1. Remove the RF/Audio-Logic Board. Substitute a known
good board.
2. Temporarily connect +6 V DC to the battery contacts.
3. Depress the PWR button; if unit turns on and stays on, dis-
connect the power source and reassemble the phone with the
new RF/Audio-Logic board and re-test phone.
1. Make sure the antenna shaft ferrule is screwed into the
antenna socket.
2. Make sure pin on antenna coil is seated in antenna connec-
tor socket.
3. Replace the antenna with a known good antenna.
Replace the transceiver board (refer to symptom 1c Verifica-
tion and Re edy.)
Troubleshooting
4/3/01
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