Motorola V8162, Service Manual

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V8160
Table 15:
Symptom Probable Cause Verification and Remedy
1. Phone will not turn on
or stay on. a) Battery either discharged or
defective. 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.
b) Battery connector open
or misaligned. 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.
c) Switch inside option
connector is open. 1. Measure resistance across the two option connector solder
connections on the RF side of the RF/Audio-Logic board.
2. If the switch measures open, replace the option connector.
d) Keypad membrane defec-
tive. 1. Replace the keypad membrane with a known good part.
2. Temporarily c4 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.
e) Keypad board defective. 1. Replace keypad board assembly with a known good assem-
bly.
2. Temporarily c4 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.
f) RF/Audio-Logic Board
defective. 1. Remove the RF/Audio-Logic Board. Substitute a known
good board.
2. Temporarily c4 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.