Motorola V3 SERIES, Руководство по обслуживанию

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6809505A6
3
-O September 26, 2006 31
Level 1 and 2 Service Manual 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 <3.25 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.
d) keyboard assembly failure. Replace the keyboard assembly. Temporarily
connect a +3.6 Vdc supply to the battery
connectors. Press and hold the PWR button. If
unit turns on and stays on, disconnect the dc
power source and reassemble with the new
keyboard assembly.
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) Flip assembly defective. Temporarily replace the flip assembly with a
known good assembly. If fault has been cleared,
reassemble with the new flip assembly. If fault
not cleared, proceed to c.
c) 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.